Product Description
Greentech International (Xihu (West Lake) Dis.) Co., Ltd is the professional vacuum pump supplier.
The application range and characteristics:
2BE3 series water ring vacuum pumps and compressors are designed and manufactured by our company integrating with the advanced technology abroad. They are not only can save energy, but also can work constantly for a long time.
Under the rough vacuum situation, the requirements for the liquid ring vacuum pumps are very rigorous. So the 2BE3 series products are designed for pumping various gases. They are widely used in many industries, such as, the paper, mine, power station, chemical etc.
2BE3 series products can be driven with many different sets, such as, the V-belt, synchronal motor, gear box etc. In order to save space, more than 2 or at most 4 sets of the 2BE3 series pumps can be driven by 1 motor simultaneously.
When set a middle wall in the casing, the pressure tolerance between the 2 sides is lower than 80kPa and the 2 parts can work in different vacuum status respectively. Thus 1 pump can work well like two. Hereby the product operating flexibility is improved effectively.
The main characteristics of 2BE3 series products:
· The tolerance, corrosive status, and the begrime situation can be easily observed by the big inspection port on both sides of the end-shield.
· The 2BE3 series pumps have flanges both on the top and sides with the same diameter. It is more convenient to connect with the 2BE3 series pumps.
· The bearings are all used of the imported products in order to keep the precise orientation and the high stability during the working of the pump.
· The material of the impeller is QT400 nodular iron or steel plates for ensuring the stability of the pump under the various rigorous situations and extending the life of the pump effectively.
· The casing is made of steel or stainless steel plates to extend the lifetime of the 2BE3 series pumps.
· The shaft bushing is made of stainless steel plates to extend the life of the pumps 5 times more than the normal material.
· The V-belt pulley (when the pump is driven by the belt) is used of the high precise pulley with taper bushing to keep the reliability of the pump and extend its life. And it is also easy to mantle and dismantle.
· The unique design of setting the separator above the pump saves the space and decreases the noise efficiently.
· All the spare parts are cast by the resin sands that make the surface of the pump very smooth. So it is not necessary to cover the surface of the pump with putty and gives out the heat efficiently.
· The mechanical seals (optional) are all used the imported products so as to avoid the leakage during the working of the pump for a long time.
| Type | Speed (Drive type) r/min |
Max shaft power kW |
Motor Power kW |
Suction Capacity | Limited vacuum (abs) mbar |
Weight of bare pump with separator kg |
|
| m 3 /h | m 3 /min | ||||||
| 2BE3 400 | 340(V-Belt/gear box) 390(V-Belt/gear box) 440(V-Belt/gear box) 490(V-Belt/gear box) 530(V-Belt/gear box) 570(V-Belt/gear box) 610(V-Belt/gear box) |
82 95 115 134 148 167 189 |
110 110 132 160 185 200 220 |
4850 5650 6250 6900 7470 8000 8600 |
80.8 94.2 104.2 115.0 124.5 133.3 143.3 |
160 | 3275 |
| 2BE3 420 | 340(V-Belt/gear box) 390(V-Belt/gear box) 440(V-Belt/gear box) 490(V-Belt/gear box) 530(V-Belt/gear box) 570(V-Belt/gear box) 610(V-Belt/gear box) |
108 132 157 180 204 229 260 |
132 160 185 200 220 250 315 |
6650 7650 8550 9400 10150 10700 11600 |
110.8 127.5 142.5 156.6 169.2 178.3 193.3 |
160 | 3720 |
| 2BE3 500 | 260(gear box) 300(gear box) 340(gear box) 380(gear box) 420(gear box) 470(gear box) |
142 171 203 238 277 338 |
160 200 250 280 315 400 |
8700 10150 11400 12700 13800 15500 |
145.0 169.2 190.0 211.7 230.0 258.3 |
160 | 6110 |
| 2BE3 520 | 260(gear box) 300(gear box) 340(gear box) 380(gear box) 420(gear box) 470(gear box) |
172 210 245 288 337 412 |
200 250 280 315 400 500 |
10700 12300 14000 15400 16800 18700 |
178.3 205.0 233.3 256.7 280.0 311.7 |
160 | 6740 |
| 2BE3 600 | 230(gear box) 260(gear box) 290(gear box) 320(gear box) 350(gear box) 400(gear box) |
205 243 285 322 365 465 |
250 280 315 355 450 560 |
12700 14400 16000 17500 19000 21600 |
211.7 240.0 266.7 291.7 316.7 360.0 |
160 | 9100 |
| 2BE3 620 | 230(gear box) 260(gear box) 290(gear box) 320(gear box) 350(gear box) 400(gear box) |
250 300 340 390 450 570 |
280 355 400 450 500 630 |
15600 17700 19500 21300 23200 26200 |
260.0 295.0 325.0 355.0 386.7 436.7 |
160 | 10700 |
| 2BE3 670 | 210(gear box) 240(gear box) 270(gear box) 300(gear box) 320(gear box) 330(gear box) 370(gear box) |
280 350 415 465 523 545 670 |
315 400 450 560 630 630 800 |
18300 20400 23160 25500 27000 27720 30960 |
305 340 386 425 450 462 516 |
160 | 12700 |
| 2BE3 720 | 190(gear box) 210(gear box) 240(gear box) 270(gear box) 300(gear box) 340(gear box) |
345 395 475 550 642 795 |
400 450 560 630 710 900 |
21900 24300 27480 30540 33780 38100 |
365 405 458 509 563 635 |
160 | 15700 |
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| Oil or Not: | Oil Free |
|---|---|
| Structure: | Reciprocating Vacuum Pump |
| Exhauster Method: | Entrapment Vacuum Pump |
| Vacuum Degree: | High Vacuum |
| Work Function: | Pre-Suction Pump |
| Working Conditions: | Wet |
| Customization: |
Available
|
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What Is the Vacuum Level and How Is It Measured in Vacuum Pumps?
The vacuum level refers to the degree of pressure below atmospheric pressure in a vacuum system. It indicates the level of "emptiness" or the absence of gas molecules in the system. Here's a detailed explanation of vacuum level measurement in vacuum pumps:
Vacuum level is typically measured using pressure units that represent the difference between the pressure in the vacuum system and atmospheric pressure. The most common unit of measurement for vacuum level is the Pascal (Pa), which is the SI unit. Other commonly used units include Torr, millibar (mbar), and inches of mercury (inHg).
Vacuum pumps are equipped with pressure sensors or gauges that measure the pressure within the vacuum system. These gauges are specifically designed to measure the low pressures encountered in vacuum applications. There are several types of pressure gauges used for measuring vacuum levels:
1. Pirani Gauge: Pirani gauges operate based on the thermal conductivity of gases. They consist of a heated element exposed to the vacuum environment. As gas molecules collide with the heated element, they transfer heat away, causing a change in temperature. By measuring the change in temperature, the pressure can be inferred, allowing the determination of the vacuum level.
2. Thermocouple Gauge: Thermocouple gauges utilize the thermal conductivity of gases similar to Pirani gauges. They consist of two dissimilar metal wires joined together, forming a thermocouple. As gas molecules collide with the thermocouple, they cause a temperature difference between the wires, generating a voltage. The voltage is proportional to the pressure and can be calibrated to provide a reading of the vacuum level.
3. Capacitance Manometer: Capacitance manometers measure pressure by detecting the change in capacitance between two electrodes caused by the deflection of a flexible diaphragm. As the pressure in the vacuum system changes, the diaphragm moves, altering the capacitance and providing a measurement of the vacuum level.
4. Ionization Gauge: Ionization gauges operate by ionizing gas molecules in the vacuum system and measuring the resulting electrical current. The ion current is proportional to the pressure, allowing the determination of the vacuum level. There are different types of ionization gauges, such as hot cathode, cold cathode, and Bayard-Alpert gauges.
5. Baratron Gauge: Baratron gauges utilize the principle of capacitance manometry but with a different design. They consist of a pressure-sensing diaphragm separated by a small gap from a reference electrode. The pressure difference between the vacuum system and the reference electrode causes the diaphragm to deflect, changing the capacitance and providing a measurement of the vacuum level.
It's important to note that different types of vacuum pumps may have different pressure ranges and may require specific pressure gauges suitable for their operating conditions. Additionally, vacuum pumps are often equipped with multiple gauges to provide information about the pressure at different stages of the pumping process or in different parts of the system.
In summary, vacuum level refers to the pressure below atmospheric pressure in a vacuum system. It is measured using pressure gauges specifically designed for low-pressure environments. Common types of pressure gauges used in vacuum pumps include Pirani gauges, thermocouple gauges, capacitance manometers, ionization gauges, and Baratron gauges.
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What Is the Difference Between Dry and Wet Vacuum Pumps?
Dry and wet vacuum pumps are two distinct types of pumps that differ in their operating principles and applications. Here's a detailed explanation of the differences between them:
Dry Vacuum Pumps:
Dry vacuum pumps operate without the use of any lubricating fluid or sealing water in the pumping chamber. They rely on non-contact mechanisms to create a vacuum. Some common types of dry vacuum pumps include:
1. Rotary Vane Pumps: Rotary vane pumps consist of a rotor with vanes that slide in and out of slots in the rotor. The rotation of the rotor creates chambers that expand and contract, allowing the gas to be pumped. The vanes and the housing are designed to create a seal, preventing gas from flowing back into the pump. Rotary vane pumps are commonly used in laboratories, medical applications, and industrial processes where a medium vacuum level is required.
2. Dry Screw Pumps: Dry screw pumps use two or more intermeshing screws to compress and transport gas. As the screws rotate, the gas is trapped between the threads and transported from the suction side to the discharge side. Dry screw pumps are known for their high pumping speeds, low noise levels, and ability to handle various gases. They are used in applications such as semiconductor manufacturing, chemical processing, and vacuum distillation.
3. Claw Pumps: Claw pumps use two rotors with claw-shaped lobes that rotate in opposite directions. The rotation creates a series of expanding and contracting chambers, enabling gas capture and pumping. Claw pumps are known for their oil-free operation, high pumping speeds, and suitability for handling dry and clean gases. They are commonly used in applications such as automotive manufacturing, food packaging, and environmental technology.
Wet Vacuum Pumps:
Wet vacuum pumps, also known as liquid ring pumps, operate by using a liquid, typically water, to create a seal and generate a vacuum. The liquid ring serves as both the sealing medium and the working fluid. Wet vacuum pumps are commonly used in applications where a higher level of vacuum is required or when handling corrosive gases. Some key features of wet vacuum pumps include:
1. Liquid Ring Pumps: Liquid ring pumps feature an impeller with blades that rotate eccentrically within a cylindrical casing. As the impeller rotates, the liquid forms a ring against the casing due to centrifugal force. The liquid ring creates a seal, and as the impeller spins, the volume of the gas chamber decreases, leading to the compression and discharge of gas. Liquid ring pumps are known for their ability to handle wet and corrosive gases, making them suitable for applications such as chemical processing, oil refining, and wastewater treatment.
2. Water Jet Pumps: Water jet pumps utilize a jet of high-velocity water to create a vacuum. The water jet entrains gases, and the mixture is then separated in a venturi section, where the water is recirculated, and the gases are discharged. Water jet pumps are commonly used in laboratories and applications where a moderate vacuum level is required.
The main differences between dry and wet vacuum pumps can be summarized as follows:
1. Operating Principle: Dry vacuum pumps operate without the need for any sealing fluid, while wet vacuum pumps utilize a liquid ring or water as a sealing and working medium.
2. Lubrication: Dry vacuum pumps do not require lubrication since there is no contact between moving parts, whereas wet vacuum pumps require the presence of a liquid for sealing and lubrication.
3. Applications: Dry vacuum pumps are suitable for applications where a medium vacuum level is required, and oil-free operation is desired. They are commonly used in laboratories, medical settings, and various industrial processes. Wet vacuum pumps, on the other hand, are used when a higher vacuum level is needed or when handling corrosive gases. They find applications in chemical processing, oil refining, and wastewater treatment, among others.
It's important to note that the selection of a vacuum pump depends on specific requirements such as desired vacuum level, gas compatibility, operating conditions, and the nature of the application.
In summary, the primary distinction between dry and wet vacuum pumps lies in their operating principles, lubrication requirements, and applications. Dry vacuum pumps operate without any lubricating fluid, while wet vacuum pumps rely on a liquid ring or water for sealing and lubrication. The choice between dry and wet vacuum pumps depends on the specific needs of the application and the desired vacuum level.
What Is the Purpose of a Vacuum Pump in an HVAC System?
In an HVAC (Heating, Ventilation, and Air Conditioning) system, a vacuum pump serves a crucial purpose. Here's a detailed explanation:
The purpose of a vacuum pump in an HVAC system is to remove air and moisture from the refrigerant lines and the system itself. HVAC systems, particularly those that rely on refrigeration, operate under specific pressure and temperature conditions to facilitate the transfer of heat. To ensure optimal performance and efficiency, it is essential to evacuate any non-condensable gases, air, and moisture from the system.
Here are the key reasons why a vacuum pump is used in an HVAC system:
1. Removing Moisture: Moisture can be present within an HVAC system due to various factors, such as system installation, leaks, or improper maintenance. When moisture combines with the refrigerant, it can cause issues like ice formation, reduced system efficiency, and potential damage to system components. A vacuum pump helps remove moisture by creating a low-pressure environment, which causes the moisture to boil and turn into vapor, effectively evacuating it from the system.
2. Eliminating Air and Non-Condensable Gases: Air and non-condensable gases, such as nitrogen or oxygen, can enter an HVAC system during installation, repair, or through leaks. These gases can hinder the refrigeration process, affect heat transfer, and decrease system performance. By using a vacuum pump, technicians can evacuate the air and non-condensable gases, ensuring that the system operates with the designed refrigerant and pressure levels.
3. Preparing for Refrigerant Charging: Prior to charging the HVAC system with refrigerant, it is crucial to create a vacuum to remove any contaminants and ensure the system is clean and ready for optimal refrigerant circulation. By evacuating the system with a vacuum pump, technicians ensure that the refrigerant enters a clean and controlled environment, reducing the risk of system malfunctions and improving overall efficiency.
4. Leak Detection: Vacuum pumps are also used in HVAC systems for leak detection purposes. After evacuating the system, technicians can monitor the pressure to check if it holds steady. A significant drop in pressure indicates the presence of leaks, enabling technicians to identify and repair them before charging the system with refrigerant.
In summary, a vacuum pump plays a vital role in an HVAC system by removing moisture, eliminating air and non-condensable gases, preparing the system for refrigerant charging, and aiding in leak detection. These functions help ensure optimal system performance, energy efficiency, and longevity, while also reducing the risk of system malfunctions and damage.
editor by Dream 2024-04-23