Air-cooled Roots liquid annular closed vacuum pump

Abstract

The utility model belongs to the technical field of vacuum pumps, and relates to an air-cooled Roots liquid ring closed vacuum pump, which comprises an air-cooled Roots vacuum pump, a cooling water system, a heat exchanger and a gas filtering device, the air-cooled Roots vacuum pump is externally connected with the cooling water system, and the air-cooled Roots vacuum pump is in flange connection with the gas filtering device. And the air-cooled Roots vacuum pump is communicated with the heat exchanger. The external cooling water system is matched with the heat exchanger, so that higher temperature generated when the air-cooled Roots vacuum pump operates under high pressure difference can be effectively reduced, noise generated when the vacuum pump operates is reduced, the operating environment of equipment is improved, unsafe factors generated by high temperature are also reduced, and the service life of the air-cooled Roots vacuum pump is prolonged. According to the gas filtering device, the treatment capacity of the vacuum pump on impurities in sucked gas is greatly improved, the impurities are prevented from entering the pump body and corroding the pump body, the service life is effectively prolonged, and the working environment state is effectively improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a vacuum pump technical field especially relates to a gas cooling roots liquid ring closed vacuum pump. BACKGROUND

[0002] The gas cooling roots vacuum pump is a kind of high-efficiency vacuum equipment combined with the advantages of roots vacuum pump and special cooling mechanism, based on the basic principle of roots vacuum pump, the compression and delivery of gas are realized by the rotation of two mutually meshing rotors in pump cavity, with the advantages of fast start, low power consumption, low operation and maintenance cost, high pumping speed and high efficiency, and is widely used in various industries.

[0003] The existing gas cooling roots vacuum pump generates high temperature and large noise under high pressure difference, which not only affects the operation environment of the equipment, but also may pose a potential threat to the health of the operator, and the gas sucked into the pump body often contains impurities, which can easily corrode the vacuum pump and affect the service life of the pump body. UTILITY MODEL CONTENTS

[0004] To solve the above problems in the prior art, the utility model provides a gas cooling roots liquid ring closed vacuum pump.

[0005] The technical scheme of the utility model is realized by the following scheme: a gas cooling roots liquid ring closed vacuum pump, comprising a gas cooling roots vacuum pump, a cooling water system, a heat exchanger and a gas filtering device, the gas cooling roots vacuum pump is connected with the cooling water system, the gas cooling roots vacuum pump is flange-connected with the gas filtering device, and the gas cooling roots vacuum pump is communicated with the heat exchanger.

[0006] Through the above technical scheme, the high temperature generated by the gas cooling roots vacuum pump under high pressure difference can be effectively reduced by connecting the cooling water system with the heat exchanger, the noise generated during the operation of the vacuum pump can be reduced, the operation environment of the equipment can be improved, and the unsafe factors caused by high temperature can be reduced. The gas filtering device greatly improves the processing capacity of the vacuum pump for impurities in the sucked gas, prevents the impurities from entering the pump body and causing corrosion to the pump body, effectively improves the service life and working environment.

[0007] As a preferred, the gas cooling roots vacuum pump comprises a supporting protective shell, a pump body, an air inlet and an air outlet, the pump body is installed in the supporting protective shell, the air inlet is arranged on the top surface of the pump body, the air inlet penetrates the supporting protective shell, and the heat exchanger is installed on the bottom surface of the supporting protective shell.

[0008] As a preferred, the air inlet is flange-connected with the gas filtering device, the air outlet is communicated with the heat exchanger, and the cooling water system is located between the supporting protective shell and the pump body.

[0009] As preferred, the cooling water system comprises a cooling water tank and a circulating water pipe, the cooling water tank is communicated with the support protective shell through the circulating water pipe, the cooling water tank is located at one side of the air-cooled Roots vacuum pump, and the circulating water pipe is laid on the inner wall of the support protective shell.

[0010] Through the above technical scheme, the circulating water pipe is located between the support protective shell and the pump body and laid on the inner wall of the support protective shell, can fully cover the space in the support protective shell to realize effective all-around heat absorption, the air inlet flange is connected with the gas filtering device, the gas entering the Roots vacuum pump can be effectively filtered, impurities and particulate matter are prevented from entering the system, the stability and reliability of the equipment are improved, the rotors in the pump body are cooled and radiated through the backflow of the cooled gas part through the heat exchanger, and the pump body is controlled at a suitable temperature.

[0011] As preferred, the gas filtering device comprises a filter cylinder, a filter layer and a fastener, the filter layer is sleeved on the filter cylinder, and the filter layer is fixed with the filter cylinder through the fastener.

[0012] As preferred, the filter cylinder is flange-connected with the air-cooled Roots vacuum pump, and a plurality of ventilation holes are formed in the outer side of the filter cylinder.

[0013] As preferred, a plurality of backflow pipelines are communicated between the heat exchanger and the air-cooled Roots vacuum pump, and adjusting valves are arranged on the plurality of backflow pipelines.

[0014] Through the above technical scheme, the filter barrel and the filter layer cooperate to efficiently capture impurities in the gas sucked by the pump body, effectively maintain the cleanliness of the gas, and prevent pollutants from entering the pump body, thereby reducing the corrosion of the pump body, effectively prolonging the service life of the equipment, and reducing the cost of maintenance and replacement.

[0015] In summary, the utility model has the following beneficial effects:

[0016] 1. The utility model discloses a cooling water system and a heat exchanger, which can effectively reduce the high temperature generated by the air-cooled Roots vacuum pump when operating under high pressure difference, reduce the noise generated by the vacuum pump when operating, improve the operating environment of the equipment, and also reduce the unsafe factors caused by high temperature.

[0017] 2. The circulating water pipe is located between the support protective shell and the pump body and is laid on the inner wall of the support protective shell, can fully cover the space in the support protective shell to realize effective all-around heat absorption, the air inlet flange is connected with the gas filtering device, can effectively filter the gas entering the Roots vacuum pump, prevents impurities and particulate matter from entering the system, improves the stability and reliability of the equipment, and the cooled gas is partially returned to the pump body through the heat exchanger to cool and dissipate heat for the rotor in the pump body, so that the working pump body is controlled at a suitable temperature.

[0018] 3. The impurities in the gas sucked by the pump body can be efficiently captured through the cooperation of the filter barrel and the filter layer, the gas can be effectively kept clean, and the pollution of the pump body by the impurities can be prevented, so that the corrosion of the pump body is reduced, the service life of the equipment is effectively prolonged, and the cost of maintenance and replacement is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 is a schematic diagram of the three-dimensional structure of the utility model;

[0020] Figure 2 is a schematic diagram of the internal structure of the utility model;

[0021] Figure 3 is a schematic diagram of the pump body connection structure of the utility model;

[0022] Figure 4 is a schematic diagram of the three-dimensional structure of the gas filtering device of the utility model;

[0023] Figure 5 is a schematic diagram of the three-dimensional structure of the filter cylinder of the utility model.

[0024] BRIEF DESCRIPTION OF DRAWINGS 1. Air-cooled Roots vacuum pump; 11, support protective shell; 12, pump body; 13, air inlet; 14, air outlet; 2, cooling water system; 21, cooling water tank; 22, circulating water pipe; 3, heat exchanger; 4, regulating valve; 5, gas filtering device; 51, filter cylinder; 52, filter layer; 53, fastener. DETAILED DESCRIPTION

[0025] In order to more clearly understand the above-mentioned purposes, features and advantages of the utility model, the utility model will be further described below in combination with the drawings and examples.

[0026] In the following description, many specific details are set forth in order to provide a thorough understanding of the utility model, however, the utility model can also be implemented in other ways different from the description herein, therefore, the utility model is not limited to the specific examples disclosed in the following description, the utility model will be further described in detail below in combination with the drawings.

[0027] An air-cooled Roots liquid ring closed vacuum pump, such as Figures 1-5As shown, including air-cooled roots vacuum pump 1, cooling water system 2, heat exchanger 3 and gas filter device 5, air-cooled roots vacuum pump 1 is connected with cooling water system 2, air-cooled roots vacuum pump 1 is flange connected with gas filter device 5, flange has strong pressure-bearing capacity and helps to prevent fluid leakage, thereby ensuring the safe and stable operation of the production process, air-cooled roots vacuum pump 1 is communicated with heat exchanger 3, cooling water system 2 and air-cooled roots vacuum pump 1 bottom surface are both provided with supporting legs, air-cooled roots vacuum pump 1 is cooled by heat exchanger 3 and cooling water system 2, so that it keeps in the appropriate working temperature range, which improves the stability and reliability of the system, part of the hot gas is discharged through the heat exchanger 3, and the other part of the cooled gas is returned to the air-cooled roots vacuum pump 1 for cooling, which effectively reduces the noise and over-temperature condition with the cooperation of the cooling water system 2, and the gas filter device 5 effectively filters the impurities in the air, preventing them from entering the air-cooled roots vacuum pump 1, thereby reducing the corrosion and damage to the pump, which helps to prolong the service life of the air pump and reduce maintenance and repair costs.

[0028] The heat exchanger 3 and the air-cooled roots vacuum pump 1 are communicated with a plurality of return pipelines, and the plurality of return pipelines are provided with adjusting valves 4. By adjusting the adjusting valves 4 on the return pipelines, the cooling effect of the heat exchanger 3 on the pump body 12 is adjusted, so that the rotor in the pump body 12 always keeps in the appropriate working temperature range, which improves the stability and reliability of the system.

[0029] The air-cooled roots vacuum pump 1 comprises a supporting protective shell 11, a pump body 12, an air inlet 13 and an air outlet 14. The pump body 12 is installed in the supporting protective shell 11. The air inlet 13 is arranged on the top surface of the pump body 12 and penetrates the supporting protective shell 11. The heat exchanger 3 is installed on the bottom surface of the supporting protective shell 11. The air inlet 13 is flange connected with the gas filter device 5. When the air is sucked in, the gas filter device can effectively filter the gas, effectively preventing external particles and impurities from entering the pump interior, improving the stability and reliability of the system. The air outlet 14 is communicated with the heat exchanger 3. The cooling water system 2 is located between the supporting protective shell 11 and the pump body 12. The supporting protective shell 11 protects the pump body 12. Part of the heat exchanger 3 is located in the supporting protective shell 11. The presence of the supporting protective shell 11 can effectively protect the pump body 12 from physical damage and pollution from the external environment. The pump body 12 has two rotors.

[0030] The cooling water system 2 comprises a cooling water tank 21 and a circulating water pipe 22, which can timely absorb and take away the heat generated in the pump body 12 due to air flow pulsation, thereby keeping the temperature of the pump body 12 stable, reducing the risk of equipment damage and performance decline caused by high temperature, the cooling water tank 21 is connected to the support protective shell 11 through the circulating water pipe 22, the cooling water tank 21 is located on one side of the air-cooled roots vacuum pump 1, the circulating water pipe 22 is laid on the inner wall of the support protective shell 11, the circulating water pipe 22 extends from the cooling water tank 21 to the support protective shell 11, and is laid on the inner wall of the support protective shell 11 to further cool the pump body 12, part of the circulating water pipe 22 surrounds the motor of the pump body 12, ensuring that the pump body 12 and the motor can be fully cooled, preventing overheating, prolonging the service life of the motor, improving the stability and reliability of the system, and laying the circulating water pipe 22 on part of the heat exchanger 3 in the support protective shell 11, so that the heat gas is cooled more quickly, the efficiency of the heat exchanger 3 is improved, and the heat energy exchange process of the whole system is optimized, and the cooling water system 2 can maximize the use of cooling water to cool the pump body 12 and the motor.

[0031] The gas filtering device 5 comprises a filter cylinder 51, a filter layer 52 and a fastener 53, the filter layer 52 is sleeved on the filter cylinder 51, and the filter layer 52 is fixed with the filter cylinder 51 through the fastener 53, the filter cylinder 51 is flange-connected with the air-cooled roots vacuum pump 1, a plurality of ventilation holes are formed in the outer side of the filter cylinder 51, the ventilation holes are square, the fastener 53 is preferably a stainless steel clamp, which is fixed with the filter layer 52 through a screw, the fastener 53 close to the bottom of the filter cylinder 51 is in a bottom-sealed mode, which prevents the filter layer 52 from being sucked off due to excessive suction force, ensures that the filter layer 52 can be effectively fixed on the filter cylinder 51 at all times, avoids loosening or falling off during operation, and ensures the stability of the filtering effect, the bottom of the filter cylinder 51 is in a non-hole state, which is convenient for buffering the inhaled gas, the outer diameter of the filter cylinder 51 is smaller than the inner diameter of the air inlet 13, and the design of the filter cylinder 51 and the filter layer 52 can effectively filter the particles and impurities in the air, ensure that the gas inhaled by the air-cooled roots vacuum pump 1 is clean, protect the internal components of the pump body 12 from being damaged by particles and impurities, prolong the service life of the equipment, optimize the air intake effect, and the filter layer 52 preferably adopts special filter cotton.

[0032] The communication control method between devices all adopts the existing communication method, which is not the innovation point of the application.

[0033] Working principle: the staff start the pump body 12, pump body 12 start running suction, the inhaled gas through the air inlet 13 gas filter device 5 carries on the particle impurity filtration, the filtered gas enters the pump body 12, further carries the heat into the heat exchanger 3, the heat exchanger 3 cools the gas and discharges part, another part backflow into the pump body 12 to carry out gas cooling, at this time the support protection shell 11 on the periphery of pump body 12 circulating water pipe 22 via cooling water tank 21 carries out water cooling heat dissipation, completes double cooling.

[0034] The above is only the preferred embodiment of the present application, and is not intended to limit the present application in other forms. Any skilled person in the art can modify or change the above disclosed technology content to equivalent embodiments applied to other fields. However, any simple modification or equivalent change made to the above embodiments without departing from the technical solution of the present application, according to the technical essence of the present application, still belongs to the protection scope of the present application.

Claims

1. A gas-cooled dry vacuum pump of the Roots liquid ring closed type, characterized in that: Including air-cooled roots vacuum pump (1), cooling water system (2), heat exchanger (3) and gas filter device (5), the air-cooled roots vacuum pump (1) is connected with cooling water system (2), the air-cooled roots vacuum pump (1) flange connection gas filter device (5), the air-cooled roots vacuum pump (1) is communicated heat exchanger (3).

2. The gas-cooled Roots liquid ring closed vacuum pump according to claim 1, characterized in that: The air-cooled roots vacuum pump (1) includes support protection shell (11), pump body (12), air inlet (13) and air outlet (14), the pump body (12) is installed in support protection shell (11), the air inlet (13) is arranged on the top surface of pump body (12), the air inlet (13) penetrates support protection shell (11), the bottom surface of support protection shell (11) is provided with heat exchanger (3).

3. The gas-cooled dry vacuum pump according to claim 2, characterized in that: The air inlet (13) is flange connected with the gas filter device (5), the air outlet (14) is communicated with the heat exchanger (3), and the cooling water system (2) is located between the support protection shell (11) and the pump body (12).

4. The gas-cooled dry vacuum pump according to claim 2, characterized in that: The cooling water system (2) includes cooling water tank (21) and circulating water pipe (22), the cooling water tank (21) is communicated with support protection shell (11) through circulating water pipe (22), the cooling water tank (21) is located on one side of air-cooled roots vacuum pump (1), and the circulating water pipe (22) is laid on the inner wall of support protection shell (11).

5. The gas-cooled dry vacuum pump according to claim 1, characterized in that: The gas filter device (5) includes filter cylinder (51), filter layer (52) and fastener (53), the filter layer (52) is sleeved on the filter cylinder (51), and the filter layer (52) is fixed with the filter cylinder (51) through the fastener (53).

6. The gas-cooled dry vacuum pump according to claim 5, characterized in that: The filter cylinder (51) is flange connected with the air-cooled roots vacuum pump (1), and a plurality of ventilation holes are formed on the outer side of the filter cylinder (51).

7. The gas-cooled dry vacuum pump according to claim 1, characterized in that: The heat exchanger (3) is communicated with the air-cooled roots vacuum pump (1) through a plurality of backflow pipes, and adjusting valves (4) are arranged on the plurality of backflow pipes.

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