rotary vane vacuum pump installation method

Rotary vane vacuum pump should be placed horizontally. With the pump operation almost no oscillation, generally can not be fixed. There are metric screw holes on the damping pad at the bottom of the rotary vane vacuum pump to fix the pump. Do not push or pull the pump on the ground to avoid damaging the damping pad. In order to ensure excellent cooling of the rotary vane vacuum pump, the cooling air inlet and outlet of the pump should be more than 30cm away from the surrounding objects. 

In order to facilitate repair, it is proposed to leave 0.4m space in front of the air inlet and exhaust port of rotary vane vacuum pump. In order to facilitate the oil drain, the base with oil drain pan can be installed, and the pump delivered by rotary vane vacuum pump does not carry oil. After the installation, slowly inject the regular vacuum pump oil through the oil filling port to 3 / 4 of the oil window height.

The electrical connection of rotary vane vacuum pump and the electrical wiring of rotary vane vacuum pump should be carried out by professional electricians. It is necessary to check the rotation direction of the motor after the wiring of the three-phase asynchronous motor of the rotary vane vacuum pump is completed. The correct rotation direction of the motor is: from the fan end of the motor tail, the rotation direction of the motor shaft is counterclockwise.

When checking the rotation direction of rotary vane vacuum pump, the suction port should be turned over or covered with rubber plate (thickness over 4mm), and the power supply should be connected for 2 ~ 3 seconds. If the rotation direction is correct, you will feel strong suction or rubber plate tightly at the suction port. If it is reversed, adjust two of the three power lines arbitrarily.

Water Ring Vacuum Pump

Dry Scroll Vacuum Pump

industrial vacuum pumps,vacuum furnaces

Selection of water ring vacuum pump model

Try to select the standard with lower rotation speed. On the premise of reaching the same pumping volume, try to select the pump with lower rotation speed. The larger pump consumes less specific power, that is, higher power. In addition, the larger standard water ring vacuum pump has long blades (that is, long flow channel), small curvature of fluid, approximate straight streamline, and fluid activity is close to slow flow. 

Considering the influence of water temperature, the temperature of most make-up water is between 25 ℃ and 35 ℃. Therefore, when selecting pumps, the air volume should be appropriately increased compared with that in the technical documents. When installing pipelines, a thicker suction pipe should be selected to reduce the loss of resistance, and a right angle elbow should be cut as far as possible to improve the suction work The intention of the rate.

When the exhaust pressure is slightly positive, the influence of the increase of the exhaust pressure and the increase of the backflow in the pump cavity on the pumping volume should be considered. Because the increase of the exhaust pressure will increase the shaft power of the pump and the power of the driving machine, the experimental function curve and the corresponding skill data should be referred to in the selection to fully meet the requirements.

CL Sereis Cone Liquid Ring Vacuum Pump

Roots Blowers

Roots Vacuum Pump 

Negative pressure roots blower

Now many customers can't tell what is negative pressure roots blower, what is roots vacuum pump, what is vacuum pump and what is roots blower. They also made some mistakes during the acquisition. Now, to sum up the following points, in Roots blower profession, roots vacuum pump is what most people call negative pressure roots blower. Its principle is the same as roots blower. It belongs to volume reversal blower Machine. 

A reverse compressor which uses two blade rotors to make relative motion in the cylinder to compress and transport gas. The roots blower is simple in structure and easy to make. It is suitable for gas transportation and pressurization in low pressure occasions. Conceptually, roots blower is a kind of usage in vacuum pump. Positive pressure blowing is used with large air volume, which can not be completed by vacuum pump, such as water tank aeration, oxygen supply, powder transportation, etc.

There are several kinds of vacuum pumps, such as water ring vacuum pump, rotary vane vacuum pump, steam jet pump, molecular pump, reciprocating vacuum pump, fixed vane vacuum pump, slide valve vacuum pump, residual cycloid vacuum pump, roots vacuum pump, etc. the principle is to use the skewed rotor in the pump cavity to form the gas discharged from the pump after the volume change of rotation, mainly in the suction process.

When the volume of suction cavity increases, the vacuum degree decreases. When the gas in the container is sucked into the pump cavity, the volume becomes smaller and the pressure increases during the exhaust process. After all, the inhaled gas is discharged out of the pump through the oil seal. In terms of parameters, most of the vacuum degree of the vacuum pump is higher than that of the roots vacuum pump, and the suction volume is also larger than that of other roots vacuum pumps, so the negative pressure can be smaller than that of the roots vacuum pump.


Oil Free Vacuum Pump Selection

Rotary Vane Vacuum Pump

Dry Scroll Vacuum Pump

Development of Roots vacuum pump performance

When roots vacuum pump works, rotor and rotor, rotor and pump body are not in contact with each other, so there is no direct wear. However, due to the small clearance (generally 0.10 ~ 0.25 mm), the transmission gear is worn after long-term operation. When the backlash is greater than the minimum clearance between rotors, it will collide and cause failure. At this time, the gear should be replaced. Through the performance of the practical application value ability of Roots vacuum pump, enhance the continuous promotion of the actual development ability of the product, further reflect the development advantage of the product strength with the reliable advantage level, expand the overall improvement of the practical performance, promote the improvement of the actual performance of all aspects of the product, improve the driving force of the practical performance of the product, and make it full use of the value strength of the overall development We should speed up the exertion of the advantage level of its product application, make use of its reliable practical performance, and enhance the embodiment of its product application level. 

At the same time, we should also speed up the improvement of the product advantage level of Roots vacuum pump, expand the exertion of the product application strength and the overall performance level, expand the continuous improvement of the overall application strength of the product, fully reflect the exertion of the product value strength, and further enhance the actual application advantage level with reliable product performance.

Water Ring Vacuum Pump

Dry Scroll Vacuum Pump

industrial vacuum pumps,vacuum furnaces

Application and development of water ring vacuum pump

In the development of water ring vacuum pump value strength play, expand its practical application and quality ability of the drive, constantly improve the overall use of products and quality strength of the drive, reflecting the improvement of the overall use of strength, so as to expand the actual use of the strength of the performance, from all aspects of practical performance, increase the promotion of the role of the overall advantage of the product, the use of product performance belt Dynamic, with reliable practical advantages to enhance the strength of its products, so as to speed up the embodiment of its actual application effect. 

To speed up the overall strength of the application performance development of water ring vacuum pump, promote the embodiment of its product application and other practical value, and strengthen the improvement of product application and performance practical effect, Schindler vacuum pump in order to reflect the practical effect of the product performance of water ring vacuum pump, it is necessary to expand the embodiment of its product performance with the overall driven quality strength, so as to make it the basis of strength performance in all aspects On this basis, enhance the quality and effect of products, expand the overall development of all aspects of the use of strength.

From all aspects of the use of the effect of the product reflects the use of the basis, so that in a reliable level of overall application, expand its product strength, further expand the use of performance, to expand the use of all aspects of its strength, enhance the overall improvement of product performance strength, expand its quality performance.

CL Sereis Cone Liquid Ring Vacuum Pump

Roots Blowers

Roots Vacuum Pump 

Closed loop system of liquid ring vacuum pump

It is different from single-stage and double-stage vacuum pumps. It is a single-stage vacuum pump and a double-stage vacuum pump. 

1. Separator pressure gauge: if pressure may be generated in the separator, a pressure gauge shall be installed on the separator;

2. Suction port vacuum check valve: in order to prevent backflow when the vacuum pump / compressor is shut down, it is generally necessary to install a vacuum check valve or pneumatic valve at the inlet of the pump;

3. Working fluid booster pump: if the working fluid supply of the pump is insufficient or the working pipeline resistance is large, the working fluid booster pump can be installed;

4. Air port filter: if foreign matters may enter the pump in the system and pipeline, a filter or filter screen shall be installed at the suction port of the pump;

5. Cavitation protection pipeline: if the suction pressure of the vacuum pump is close to the saturated vapor pressure of the working fluid, a cavitation protection pipeline should be installed between the vacuum pump and the separator;

6. Exhaust condenser: if it is necessary to capture or recover the condensable gas at the exhaust port, a condenser can be installed at the exhaust port of the gas-liquid separator;

7. Liquid replenishing port of separator: if the working fluid is insufficient, the working fluid can be replenished properly from the liquid replenishing port;

8. If the vacuum pump has other special requirements, the corresponding accessories can be installed.


Rotary Vane Vacuum Pump Working Principle

Rotary Vane Vacuum Pump

Dry Scroll Vacuum Pump 

Radial exhaust water ring vacuum pump

The utility model discloses a radial exhaust water ring vacuum pump with controllable flow, which comprises a pump body, a first base plate, a second base plate and a base, the upper surface of the pump body is provided with a water tank, the interior of the water tank is provided with a blocking block, the first base plate is located at the left end of the pump body, and the interior of the first base plate is interspersed with an air outlet, the second base plate is located at the right end of the pump body, and the connecting block is arranged inside the water tank Springs are evenly distributed on the lower surface of the connecting plate, a cavity is arranged on the right side of the second base plate, a baffle is arranged above the pull ring, an air inlet is connected with the right end of the cavity, and the base is located below the pump body. 

The radial exhaust water ring vacuum pump with controllable flow can control the gas flow by rotating the baffle in the air inlet, and the filter plate can filter out the particles in the gas, so as to avoid the damage of the parts inside the pump body, and the pump body can be well protected by the extension and extension of the outrigger and the protective rod.

Water Ring Vacuum Pump

Dry Scroll Vacuum Pump

industrial vacuum pumps,vacuum furnaces

Roots water ring vacuum unit

Roots water ring vacuum unit is composed of roots pump as main pump and water ring pump as front pump in series. It can be understood as two main points: water ring pump and roots pump. 

Both roots pump and roots vacuum unit have a number of utility model patents, for example, the series Roots vacuum unit that can be started at the same time solves the shortcomings of the start-up mode of Roots vacuum unit in the prior art, such as long time consuming, low efficiency and large energy consumption, mainly including the front vacuum pump and roots vacuum pump driven by the motor of Roots vacuum pump An exhaust port is arranged on the roots vacuum pump, an air suction port is arranged on the roots vacuum pump, a pneumatic ball valve is arranged between the front vacuum pump and the roots vacuum pump, and the motor, the pneumatic ball valve and the differential pressure detection device of the front vacuum pump are all controlled by the control cabinet. The beneficial effect of the utility model is: on the premise of ensuring that the motor of the roots vacuum pump is not overloaded, the pumping speed is increased by controlling the pressure difference between the inlet and outlet of the roots vacuum pump, so as to shorten the starting time of the vacuum unit.

CL Sereis Cone Liquid Ring Vacuum Pump

Roots Blowers

Roots Vacuum Pump 

Mechanical seal screw vacuum pump with external cooling device

 The utility model discloses a mechanical seal screw vacuum pump with an external cooling device, which comprises two screw rotors and an input shaft driving the two screw rotors to rotate. The two ends of the screw rotor are provided with a mechanical seal, the extension of the input shaft and the atmospheric side are provided with a mechanical seal; the mechanical seal part is provided with a cooling cavity; the screw vacuum pump is provided with a device for taking away the heat of the mechanical seal The external cooling circulating device is a circulating circuit composed of oil tank, oil pump and oil separator. 

Compared with the prior art, the vacuum pump of the utility model adopts mechanical seal and forced circulation cooling, which completely blocks the leakage between the front of the pump and the cooling chamber as well as between the cooling chamber and the atmosphere; the external circulation cooling device forces the mechanical seal to cool down, with low working temperature and sufficient lubrication, which increases the service life and reliability of the overall transmission parts, and has the advantages of low energy consumption, good cooling effect and safe operation It is fully reliable.

Roots Blower In River Aeration Treatment

Rotary Vane Vacuum Pump

Dry Scroll Vacuum Pump

dry vacuum pump structure and characteristics

Vacuum pump is a device or device that uses mechanical, physical, chemical or physicochemical methods to exhaust the pump to get vacuum. Dry vacuum pump users in the application of vacuum pump knowledge need to master the following structure and characteristics, hope to help you. 

The configuration of the vacuum pump body determines the overall structure of the pump. The entrance and exit are arranged in a horizontal and vertical structure for easy assembly and cable connection. However, the center of gravity of the pump is high, the stability of high-speed operation is poor, so this type is used for small pumps.

The horizontal pump is at the suction port and the exhaust port is below. The piping of the vacuum system is easy to install and connect, sometimes it can be discharged from the horizontal direction of the exhaust. That is to say, the exhaust directions are perpendicular to each other. At this time, in addition to the bypass valve at the other end of the exhaust pipe, the exhaust port can also be opened from left to right. The pump structure has low center of gravity and high speed stability. Generally speaking, large and medium pumps use this structure.

The two rotor shafts of the pump are installed perpendicular to the horizontal plane. The structure is easy to control the assembly clearance, the rotor is easy to install, and the pump area is small. However, the center of gravity of the pump is the height and the disassembly of the gear, and the lubrication mechanism is also very complex.

industrial vacuum pumps,vacuum furnaces

Rotary Vane Vacuum Pump

Dry Scroll Vacuum Pump

Power supply mode of water ring vacuum pump

Water ring vacuum pump needs power supply in use and can be used in power supply equipment normally, but the power supply method is different. The efficiency varies with the mode of power supply. Here we introduce the power supply mode. 

1. The water ring vacuum pump has a large specific gravity because the extraction medium is "water or liquid". The working medium of micro vacuum pump and micro air pump is "gas" with light specific gravity. Therefore, the working current of the vacuum pump is generally larger than that of the latter, about 1 ~ 10 amperes, but the working current of the latter is generally not from a few hundred milliamperes to a few amperes.

2. Battery is the general term of battery. The principle is different from the dry battery, because it can provide large current and power, so it is widely used in electric vehicles, cars and other mobile vehicles, agricultural spraying, field sampling and other power shortage.

3. The common dry battery (such as 1.5V No.1 battery) has large internal resistance and small current supplied by itself. Most of the voltage is consumed by internal resistance, so the voltage drop is fast. From the point of view of power and service time, it is suitable for the power supply of water supply ring vacuum pump.

Roots Vacuum Pump

Water Ring Vacuum Pump

Dry Scroll Vacuum Pump 

Roots air jet water ring vacuum unit

Jzj (P) roots air jet water ring vacuum unit is composed of Roots vacuum pump, air jet pump and water ring vacuum pump in series. The unit has high vacuum degree, high pumping efficiency, low noise, stable operation, compact structure, small floor area, simple operation and convenient maintenance. 

Jzj (P) roots air jet water ring vacuum unit can be widely used in vacuum distillation, material dehydration in pharmaceutical and chemical industries, vacuum impregnation in electrical industry, kerosene vapor phase drying, powder metallurgy sintering, freeze drying in food industry, etc. It is also suitable for the workplace with large amount of steam and fine dust.

Vacuum Pumps For Wear-Resistant Coating

CL Sereis Cone Liquid Ring Vacuum Pump

Roots Blowers