Merchandise Description
Working theory
The vacuum in dry screw pumps is developed via 2 parallel-arranged screw rotors that rotate in reverse instructions. These rotors trap the gas coming in by way of the inlet and produce it to the fuel discharge or force aspect. As the fuel is obtaining compressed, there is no get in touch with in between the rotors. This does away with any require for the compression chamber to have any working fluids or lubrication.
The lubricant employed to lubricate the gears and shaft seal is sealed in the gearbox by the shaft seal. The pump can be cooled either directly by circulating cooling h2o or by a cooling unit with supporter and radiator.
The dry screw vacuum pump adopts a unique rotor pitch layout, compared with the regular rotor pitch layout, decrease the power usage by about 30%, the temperature rise of the exhaust end is diminished by about a hundred ºC, the dependability and stability of the procedure of the merchandise is significantly enhanced, can be suitable for any doing work conditions of vacuum.
The dry screw pumps can be broadly used in solvent recovery, vacuum drying, focus, crystallization, distillation and other processes in the chemical and pharmaceutical industries, vacuum extrusion and molding in the plastic and rubber industries, vacuum degassing in the metallurgical industry vacuum degassing and drying in the photo voltaic vitality, microelectronics, lithium battery and other industries.
Pump physique and end caps: substantial-energy cast iron.
Pump human body and conclude caps: large toughness forged iron.
Screw rotor: ductile solid iron.
Anti-corrosion coating: corrosion-resistant Hastelloy.
Synchronous gears: alloy steel.
Radial lip seal: imported PTFE mixture or
high-temperature resistant fluorine rubber
Seal bushings: stainless metal floor protected with ceramic.
Movement chart
Primary features
1. The screw rotor is developed with variable pitch framework, the final vacuum can achieve beneath 1Pa, which can meet all kinds of vacuum processing from environment to high vacuum.
2. Oil cost-free – Adapt to different particular functioning circumstances for dependable use.
3. It can function reliably in the force assortment from environment to a number of Pa.
four. No friction amongst transferring parts, basic construction, decrease procedure and maintenance expense.
5. Nitrogen seal and composite seal design and style is optional, which has the advantage of good dependability, minimal cost of use, simple routine maintenance.
six. The rotor is dynamically balanced at substantial velocity and the motor is related by flange, with substantial concentricity, low vibration and minimal sounds.
7. Hastelloy anti-corrosion coating is optional for rotor surface area, condensable material is not straightforward to condense in the pump cavity, far better corrosion resistance.
8. Compared with oil seal pump, liquid ring pump, there is no squander fuel, no squander liquid, no waste oil emission, power conserving and environmental helpful.
It can be utilized by itself or with Roots vacuum pump, air-cooled Roots vacuum pump, molecular vacuum pump, and so forth. to receive an oil-free high vacuum technique.
The benefit of dry screw vacuum pump in comparison to liquid ring vacuum pump:
-Shorten the approach cycle and improve production performance
-Reduce water use
-Help save vitality
-Boost product good quality
-Can get well solvent by decreasing the drying time of items
-Reduce the value of wastewater and waste gas treatment
A Circumstance in a pharmaceutical manufacturing facility
Process introduction:The penicillin sodium salt remedy is fed into the crystallization tank through vacuum. By steam heating, agitator stirring, and including butanol, the h2o and butanol in the penicillin resolution are pumped into the condenser and condensed into the liquid amassing tank, which can be reused.
Procedure demands:
one. The volume of crystallization tank is 7.5m3, and about 4.5mthree penicillin remedy is added in the method.
2. Prior to coming into the crystallization tank, the drinking water articles of penicillin remedy is about 20%, and after crystallization, the water content material is essential to be about 1%.
three. Vacuum feeding for 2h, then incorporating butanol for 30min, and then starting to crystallize. The procedure needs lower temperature and rapidly speed, and the reduced the temperature, the far better the top quality of penicillin. The shorter the response time, the greater.
four. Vacuum diploma specifications: the vacuum degree shall be kept over -.097MPa. Substantial vacuum diploma can decrease the reaction temperature and shorten the response time.
The previous vacuum system was 2BE1252+air ejector, which is now reworked into a dry screw vacuum pump. The comparison table of examination info is as follows:
| vacuum system | 2BE1252+ejector | DVP 1600 screw pump |
| Feeding time (h) | 2 | one.five |
| Liquid temperature at the commencing of crystallization (ºC) | 31.five | sixteen.six |
| Crystallization time (h) | six | four.5 |
| Time from crystallization to liquid coming out (min) | thirty | fifteen |
| Crystal good quality | average | good |
| Power use (KW) | 45 | 37 |
| Drinking water usage (m3) | 26.four | .72 |
Economic advantage analysis:
| Cost conserving(USD) | Remark | |
| H2o use and therapy | 130 | Water expense: $.sixty five/m3, drinking water treatment method: 30/m3 |
| Electrical power | fifteen | $.15/Kwh |
| Labor, production performance | 43 | Diminished from 6 hour to 4.5 hour |
| Sum up | 188 |
Remember to get in touch with us for a detailed report of economic advantage investigation for your applications!
Configuration
Normal configuration:
Device base, pump head, coupling, motor, driving screen, air inlet connector, examine valve, vacuum gauge, guide filling valve exhaust port muffler.
Optional components:
Inlet filter, inlet condenser, solvent flushing system, nitrogen purging unit, nitrogen sealing gadget, exhaust port condenser, solenoid filling valve, cooling h2o circulation swap, temperature sensor, stress transmitter.
Apps
| Leak Detection | Metallurgy | Industrial furnace | Lithium Battery |
| Chemical, pharmaceutical | Wind tunnel test | Electrical power Industry | Vacuum coating |
| Microelectronics industry | Drying Process | Packaging and Printing | Photo voltaic Vitality |
| Exhaust gas recovery |
Solution Parameters
Specialized knowledge of Variable pitch Dry screw vacuum pump
| Spec. Design |
Nominal pumping pace(50Hz) | Ultimate force | Nominal motor score (50Hz) | Nominal motor speed (50Hz) | Noise level Lp | Optimum cooling drinking water required |
Suction Relationship dimension | Discharge Connection size | Bodyweight (Without having Motor) |
| m³/h | Pa | kw | rpm | dB(A) | L/min | mm | mm | Kg | |
| DVP-180 | 181 | two | 4 | 2900 | 82 | 8 | fifty | forty | 280 |
| DVP-360 | 354 | two | seven.5 | 2900 | 83 | 10 | fifty | forty | 400 |
| DVP-540 | 535 | 2 | eleven | 2900 | eighty three | 10 | 50 | forty | 500 |
| DVP-650 | 645 | one | fifteen | 2900 | eighty four | twenty | 65 | fifty | 600 |
| DVP-800 | 780 | one | 22 | 2900 | 86 | thirty | one hundred | 80 | 800 |
| DVP-1600 | 1450 | one | 37 | 2900 | 86 | forty | one hundred twenty five | 100 | 1200 |
Specialized information of Continual pitch Dry screw vacuum pump
| Spec. Product |
Nominal pumping pace(50Hz) | Supreme pressure | Nominal motor score (50Hz) | Nominal motor speed (50Hz) | Sound level Lp | Greatest cooling water essential |
Suction Link measurement | Discharge Relationship size | Weight (Without having Motor) |
| m³/h | Pa | kw | rpm | dB(A) | L/min | mm | mm | Kg | |
| DSP-one hundred forty | 143 | 5 | 4 | 2900 | eighty two | 10 | fifty | forty | 240 |
| DSP-280 | 278 | 5 | 7.5 | 2900 | 83 | 20 | 50 | forty | 350 |
| DSP-540 | 521 | five | 15 | 2900 | eighty three | thirty | sixty five | 50 | 550 |
| DSP-650 | 617 | 5 | 18.5 | 2900 | eighty four | 45 | 65 | fifty | 630 |
| DSP-720 | 763 | 5 | 22 | 2900 | eighty five | fifty five | 80 | eighty | 780 |
| DSP-one thousand | 912 | five | 30 | 2900 | 86 | 70 | 100 | 80 | 880 |
Notice: The cooling drinking water volume of the dry screw vacuum pump supplied in the desk is the volume underneath 20ºC place temperature water. When the dry screw vacuum pump utilizes cooling unit, the cooling water will be increased, the difference of inlet and outlet water temperature is usually managed underneath 7ºC is suitable.
Dimension
FAQ
Q: What details must I supply for an inquiry?
A: You can inquire based mostly on the product immediately, but it is constantly advisable that you contact us so that we can assist you to check out if the pump is the most appropriate for your software.
Q: Can you make a customized vacuum pump?
A: Of course, we can do some specific designs to meet up with consumer applications. These kinds of as customized sealing methods, speical surface remedy can be used for roots vacuum pump and screw vacuum pump. Please contact us if you have particular demands.
Q: I have difficulties with our vacuum pumps or vacuum programs, can you offer you some assist?
A: We have software and design engineers with much more than 30 many years of knowledge in vacuum purposes in distinct industries and support a lot of consumers resolve their problems, this sort of as leakage problems, strength-saving solutions, a lot more setting-friendly vacuum systems, and many others. Make sure you contact us and we are going to be extremely pleased if we can offer any aid to your vacuum method.
Q: Can you design and style and make customized vacuum methods?
A: Of course, we are excellent for this.
Q: What is your MOQ?
A: 1 piece or 1 established.
Q: How about your shipping time?
A: 5-ten doing work times for the normal vacuum pump if the quantity is under 20 pieces, twenty-30 doing work times for the conventional vacuum program with much less than 5 sets. For far more amount or specific requirements, please speak to us to check out the direct time.
Q: What are your payment conditions?
A: By T/T, fifty% advance payment/deposit and fifty% compensated just before shipment.
Q: How about the guarantee?
A: We offer 1-year warranty (other than for the wearing parts).
Q: How about the provider?
A: We supply distant online video complex support. We can send the service engineer to the internet site for some specific requirements.
| After-sales Service: | Online Video Instruction |
|---|---|
| Warranty: | 1 Year |
| Nominal Pumping Speed(50Hz): | 181 M3/H |
| Ultimate Pressure: | 2 PA |
| Nominal Motor Rating(50Hz): | 4 Kw |
| Nominal Motor Speed(50Hz): | 2900 Rpm |
###
| vacuum system | 2BE1252+ejector | DVP 1600 screw pump |
| Feeding time (h) | 2 | 1.5 |
| Liquid temperature at the beginning of crystallization (ºC) | 31.5 | 16.6 |
| Crystallization time (h) | 6 | 4.5 |
| Time from crystallization to liquid coming out (min) | 30 | 15 |
| Crystal quality | average | good |
| Power consumption (KW) | 45 | 37 |
| Water consumption (m3) | 26.4 | 0.72 |
###
| Cost saving(USD) | Remark | |
| Water consumption and treatment | 130 | Water cost: $0.65/m3, water treatment: 30/m3 |
| Power | 15 | $0.15/Kwh |
| Labor, production efficiency | 43 | Reduced from 6 hour to 4.5 hour |
| Sum up | 188 |
###
| Leak Detection | Metallurgy | Industrial furnace | Lithium Battery |
| Chemical, pharmaceutical | Wind tunnel test | Power Industry | Vacuum coating |
| Microelectronics industry | Drying Process | Packaging and Printing | Solar Energy |
| Exhaust gas recovery |
###
| Spec. Model |
Nominal pumping speed(50Hz) | Ultimate pressure | Nominal motor rating (50Hz) | Nominal motor speed (50Hz) | Noise level Lp | Maximum cooling water required |
Suction Connection size | Discharge Connection size | Weight (Without Motor) |
| m³/h | Pa | kw | rpm | dB(A) | L/min | mm | mm | Kg | |
| DVP-180 | 181 | 2 | 4 | 2900 | 82 | 8 | 50 | 40 | 280 |
| DVP-360 | 354 | 2 | 7.5 | 2900 | 83 | 10 | 50 | 40 | 400 |
| DVP-540 | 535 | 2 | 11 | 2900 | 83 | 10 | 50 | 40 | 500 |
| DVP-650 | 645 | 1 | 15 | 2900 | 84 | 20 | 65 | 50 | 600 |
| DVP-800 | 780 | 1 | 22 | 2900 | 86 | 30 | 100 | 80 | 800 |
| DVP-1600 | 1450 | 1 | 37 | 2900 | 86 | 40 | 125 | 100 | 1200 |
###
| Spec. Model |
Nominal pumping speed(50Hz) | Ultimate pressure | Nominal motor rating (50Hz) | Nominal motor speed (50Hz) | Noise level Lp | Maximum cooling water required |
Suction Connection size | Discharge Connection size | Weight (Without Motor) |
| m³/h | Pa | kw | rpm | dB(A) | L/min | mm | mm | Kg | |
| DSP-140 | 143 | 5 | 4 | 2900 | 82 | 10 | 50 | 40 | 240 |
| DSP-280 | 278 | 5 | 7.5 | 2900 | 83 | 20 | 50 | 40 | 350 |
| DSP-540 | 521 | 5 | 15 | 2900 | 83 | 30 | 65 | 50 | 550 |
| DSP-650 | 617 | 5 | 18.5 | 2900 | 84 | 45 | 65 | 50 | 630 |
| DSP-720 | 763 | 5 | 22 | 2900 | 85 | 55 | 80 | 80 | 780 |
| DSP-1000 | 912 | 5 | 30 | 2900 | 86 | 70 | 100 | 80 | 880 |
| After-sales Service: | Online Video Instruction |
|---|---|
| Warranty: | 1 Year |
| Nominal Pumping Speed(50Hz): | 181 M3/H |
| Ultimate Pressure: | 2 PA |
| Nominal Motor Rating(50Hz): | 4 Kw |
| Nominal Motor Speed(50Hz): | 2900 Rpm |
###
| vacuum system | 2BE1252+ejector | DVP 1600 screw pump |
| Feeding time (h) | 2 | 1.5 |
| Liquid temperature at the beginning of crystallization (ºC) | 31.5 | 16.6 |
| Crystallization time (h) | 6 | 4.5 |
| Time from crystallization to liquid coming out (min) | 30 | 15 |
| Crystal quality | average | good |
| Power consumption (KW) | 45 | 37 |
| Water consumption (m3) | 26.4 | 0.72 |
###
| Cost saving(USD) | Remark | |
| Water consumption and treatment | 130 | Water cost: $0.65/m3, water treatment: 30/m3 |
| Power | 15 | $0.15/Kwh |
| Labor, production efficiency | 43 | Reduced from 6 hour to 4.5 hour |
| Sum up | 188 |
###
| Leak Detection | Metallurgy | Industrial furnace | Lithium Battery |
| Chemical, pharmaceutical | Wind tunnel test | Power Industry | Vacuum coating |
| Microelectronics industry | Drying Process | Packaging and Printing | Solar Energy |
| Exhaust gas recovery |
###
| Spec. Model |
Nominal pumping speed(50Hz) | Ultimate pressure | Nominal motor rating (50Hz) | Nominal motor speed (50Hz) | Noise level Lp | Maximum cooling water required |
Suction Connection size | Discharge Connection size | Weight (Without Motor) |
| m³/h | Pa | kw | rpm | dB(A) | L/min | mm | mm | Kg | |
| DVP-180 | 181 | 2 | 4 | 2900 | 82 | 8 | 50 | 40 | 280 |
| DVP-360 | 354 | 2 | 7.5 | 2900 | 83 | 10 | 50 | 40 | 400 |
| DVP-540 | 535 | 2 | 11 | 2900 | 83 | 10 | 50 | 40 | 500 |
| DVP-650 | 645 | 1 | 15 | 2900 | 84 | 20 | 65 | 50 | 600 |
| DVP-800 | 780 | 1 | 22 | 2900 | 86 | 30 | 100 | 80 | 800 |
| DVP-1600 | 1450 | 1 | 37 | 2900 | 86 | 40 | 125 | 100 | 1200 |
###
| Spec. Model |
Nominal pumping speed(50Hz) | Ultimate pressure | Nominal motor rating (50Hz) | Nominal motor speed (50Hz) | Noise level Lp | Maximum cooling water required |
Suction Connection size | Discharge Connection size | Weight (Without Motor) |
| m³/h | Pa | kw | rpm | dB(A) | L/min | mm | mm | Kg | |
| DSP-140 | 143 | 5 | 4 | 2900 | 82 | 10 | 50 | 40 | 240 |
| DSP-280 | 278 | 5 | 7.5 | 2900 | 83 | 20 | 50 | 40 | 350 |
| DSP-540 | 521 | 5 | 15 | 2900 | 83 | 30 | 65 | 50 | 550 |
| DSP-650 | 617 | 5 | 18.5 | 2900 | 84 | 45 | 65 | 50 | 630 |
| DSP-720 | 763 | 5 | 22 | 2900 | 85 | 55 | 80 | 80 | 780 |
| DSP-1000 | 912 | 5 | 30 | 2900 | 86 | 70 | 100 | 80 | 880 |
What Are Vacuum Pumps?
Vacuum pumps use air flow as the source of energy. The system is ideal for dewatering wet media, creating filter cakes, and pneumatically moving materials through a pipe. A vacuum pump works through air flow that is moved by differential pressure. The pump’s air flow develops a vacuum in a chamber that is called the vacuum box. As the air flow collects gas at a faster rate than atmospheric pressure, it is considered the “heart” of a vacuum system.
Principles of operation
Vacuum pumps work by reducing the volume of air that moves through them. Depending on the design, there are several different types of vacuum pumps. All of these types operate under the same principles, but have their own special features. Here are some of their most important characteristics. In addition to their capacity, the main differences between these pumps are their manufacturing tolerances, materials of construction, and level of tolerance for chemicals, oil vapor, and vibration.
Vacuum pumps create a partial or low-pressure vacuum by forcing gas molecules from their high-pressure states to their low-pressure states. However, these pumps can only achieve a partial vacuum, and other methods are necessary to reach a higher level of vacuum. As with all pumps, there are several ways to increase the level of a vacuum.
First, consider the type of vacuum you want. This is the most important factor when choosing a vacuum pump. If you need a high level of vacuum, you’ll need a high-quality vacuum pump. High-quality vacuum pumps have a high pressure limit, while ultrahigh-quality pumps are capable of achieving a very low vacuum. As the pressure decreases, the amount of molecules per cubic centimeter decreases and the quality of the vacuum increases.
Positive displacement pumps are best suited for low and medium-pressure systems. But they can’t reach high vacuum, which is why most high-pressure systems use two pumps in tandem. In this case, the positive displacement pump would stall and the other one would be used instead. Similarly, entrapment pumps have higher-pressure limits, so they must be refreshed frequently or exhaust frequently when there is too much gas to capture.
Another important aspect of vacuum pump operation is its speed. The speed of pumping is proportional to the differential pressure across the system. Therefore, the faster the pumping speed, the lower the draining time.
Design
A vacuum pump is a mechanical device used to generate a vacuum. It can create a low or high vacuum. These pumps are used in the process of oil regeneration and re-refining. The design of a vacuum pump must be compatible with the vacuum. The pump’s mass and speed should be matched.
The design of a vacuum pump is important for many reasons. It should be easy to use and maintain. Vacuum pumps need to be protected from external contamination. For this reason, the oil must be kept clean at all times. Contamination may damage the oil, resulting in pump failure. The pump’s design should include features that will prevent this from happening.
The main objective of a vacuum pump is to remove air and other gases from a chamber. As the pressure of the chamber drops, the amount of molecules that can be removed becomes more difficult. Because of this, industrial and research vacuum systems typically require pumps to operate over a large pressure range. The range is generally between one and 10-6 Torr. A standard vacuum system uses multiple pumps, each covering a portion of the pressure range. These pumps can also be operated in a series to achieve optimal performance.
The design of a vacuum pump can vary depending on the application and the pressure requirement. It should be sized appropriately to ensure that it works properly. There are several different types of pumps, so selecting the right pump is essential to maximizing its efficiency. For example, a slow running vee belt drive rotary vane vacuum pump will have a lower running temperature than a fast-running direct-drive pump.
Performance
The performance of a vacuum pump is an important indicator of its overall condition. It helps determine whether the system is performing optimally and how high the ultimate vacuum level can be achieved. A performance log should be maintained to document variations in pump operating hours and voltage as well as the temperature of the pump’s cooling water and oil. The log should also record any problems with the pump.
There are several ways to increase the performance of a vacuum pump. For example, one way is to decrease the temperature of the working fluid. If the temperature of the fluid is too high, it will lead to a low vacuum. A high temperature will make the vacuum degree of the pump even lower, so heat transfer is an important part of the process.
Nozzles are another major component that impacts the performance of a vacuum pump. Damage or clogging can result in a compromised pumping capacity. These problems can occur due to a number of causes, including excessive noise, leakage, and misassembled parts. Nozzles can also become clogged due to rusting, corrosion, or excess water.
Performance of vacuum pump technology is vital for many industries. It is an integral part of many central production processes. However, it comes with certain expenses, including machines, installations, energy, and maintenance. This makes it essential to understand what to look for when purchasing a vacuum pump. It is important to understand the factors that can influence these factors, as they affect the efficiency of a vacuum pump.
Another important factor in determining the performance of a vacuum pump is throughput. Throughput is a measurement of how many molecules can be pumped per unit of time at a constant temperature. Moreover, throughput can also be used to evaluate volume leak rates and pressure at the vacuum side. In this way, the efficiency of a vacuum pump can be judged by the speed and throughput of its leaks.
Atmospheric pressure
Vacuum pumps work by sucking liquids or air into a container. The amount of vacuum a pump can create is measured in pressure units called atms (atmospheric pressure). The pressure of a vacuum pump is equal to the difference between atmospheric pressure and the pressure in the system.
The amount of force produced by air molecules on each other is proportional to the number of impacts. Therefore, the greater the impact, the higher the pressure. In addition, all molecules have the same amount of energy at any temperature. This holds true for both pure and mixture gases. However, lighter molecules will move faster than heavier ones. Nevertheless, the transfer of energy is the same for both.
The difference between atmospheric and gauge pressure is not always straightforward. Some applications use one term to describe the other. While the two concepts are closely related, there are key differences. In most cases, atmospheric pressure is a higher number than gauge pressure. As a result, it can be confusing when choosing a vacuum pump.
One method is to use a U-tube manometer, a compact device that measures the difference between atmospheric pressure and vacuum. This device is commonly used for monitoring vacuum systems. It can measure both negative and positive pressure. In addition, it uses an electronic version of a gauge.
The atmospheric pressure affects the performance of a vacuum pump. When working with porous materials, the pump must overcome leakage. As a result, it must be equipped with enough capacity to compensate for variations in the porosity of the work piece. This is why it is critical to buy a vacuum pump that has a large enough capacity to handle the variation.
Typical application
Vacuum pumps are used in a variety of applications. They generate low and high pressures and are used to evaporate water or gases from various materials. They are also used in petroleum regeneration and re-refining processes. Typical applications of vacuum pumps include: a.
b. Rotary vane pumps are used in a variety of vacuum applications. They are suitable for industrial applications, freeze drying and cabinet making. They use oil as a sealant and coolant, allowing them to perform well in a variety of applications. This makes them ideal for use in a variety of industries.
The pumping rate of the vacuum pump is important. This refers to the volume pumped from a given point at a given rate. The higher the speed, the faster the pump will expel the air. Depending on the gas composition, this number will vary. When choosing a vacuum pump, gas composition and process requirements should be considered.
Vacuum pumps are used in a variety of industries from laboratories to medical facilities. In medical applications, they are used in radiation therapy and radiopharmaceuticals. They are also used in mass spectrometers, which are instruments used to analyze solid, liquid, or surface materials. Vacuum pumps are also used in decorative vacuum coatings and Formula 1 engine components. A trash compactor is another example of using a vacuum pump.
Vacuum pumps are used in a variety of applications including water purification and aeration. Vacuum pumps are also used in portable dental equipment and compressors in the dental industry. Vacuum pumps are also used in molds for dental implants. Other common applications for vacuum pumps include soil aeration and air sampling.
editor by czh 2023-03-23