Vacuum pump with cold air heat dissipation effect

Abstract

The utility model relates to the field of vacuum pumps, in particular to a vacuum pump with a cold air heat dissipation effect, which comprises a case, a pump body and a driving part, the pump body is mounted in the case through a support frame, an inner cavity is formed in the pump body, a controller is connected to the side surface of the case, a cooling oil tank communicated with the pump body is arranged in the case, a fan is connected to the support frame, and the fan is connected to the driving part. The fan is connected with an air flow conveying pipeline, the pump body is connected with an air inlet valve which is communicated with an inner cavity of the pump body, and one tail end of the air flow conveying pipeline is connected with the air inlet valve in a matching way. And the working temperature in the pump body is effectively reduced, so that the heat dissipation effect of the vacuum pump is further improved by combining cold air heat dissipation and cooling liquid heat dissipation of the cooling oil tank, and the heat dissipation effect and the working efficiency of the vacuum pump are enhanced.

Description

Technical Field

[0001] The utility model relates to the field of vacuum pumps, in particular to a vacuum pump with a cold air cooling effect. Background Technique

[0002] With the continuous development of technology, vacuum pumps are increasingly widely used in various industries, especially in fields that require high vacuum, high efficiency, and stable operation. As one of them, the oil-cooled oil-free screw vacuum pump has the characteristics of simple structure, high pumping efficiency, high vacuum degree, and stable operation, and is widely used in the fields of the electronics industry, medicine, and chemical industry.

[0003] The oil-cooled oil-free screw vacuum pump is a vacuum pump that adopts the screw working principle and extracts and compresses gas through the rotational movement of the screw. Its core part is mainly composed of a pair of meshing screws. The screws rotate in the pump body, suck gas from the intake port, compress it through the gap between the screws and then discharge it. At the same time, the pump body is cooled by the oil cooling system to ensure the stable operation of the vacuum pump, and it is widely used in domestic enterprises in the pharmaceutical, chemical, semiconductor and other fields with high requirements for clean vacuum.

[0004] However, the existing oil-cooled oil-free screw vacuum pumps still have some defects. The existing oil-cooled oil-free screw vacuum pumps generally cool by injecting cooling oil into the pump body. However, during long-term operation, due to the lubrication of the cooling oil and its flow in the pump body and the circulating oil circuit, a large amount of cooling oil is easily lost. Therefore, it is necessary to regularly maintain and manage the oil cooling system. After long-term use, the cooling oil absorbs the heat in the pump body to cool the pump body, but the cooling effect of the cooling oil on the pump body is not good, resulting in a decrease in the working efficiency of the pump body, insufficient vacuum degree, affecting the normal operation of the equipment. In addition, it will also cause the internal overheating of the pump body, which will further affect the performance and service life of the equipment, thus being not conducive to stable use. Content of the Utility Model

[0005] The purpose of the utility model is to solve the above defects and provide a vacuum pump with a cold air cooling effect, so as to solve the technical problem that the cooling oil of the vacuum pump in the above background technique is easily lost during long-term cooling use, resulting in poor cooling and heat dissipation effect of the vacuum pump, thus affecting the stable operation of the vacuum pump.

[0006] The purpose of the utility model is achieved by the following means:

[0007] The vacuum pump with the effect of cold air cooling includes a chassis, a pump body and a driving member. The pump body is installed in the chassis through a support frame. An inner cavity is formed inside the pump body. The driving member is connected to one end of the pump body. A controller is connected to the side of the chassis. A cooling oil tank communicating with the pump body is arranged inside the chassis. A blower is connected to the support frame, and an air flow conveying pipeline is connected to the blower. An intake valve communicating with the inner cavity of the pump body is connected to the pump body. One end of the air flow conveying pipeline extends towards the pump body and is paired and connected with the intake valve on the pump body. The cold air flow generated by the drive of the blower passes through the air flow conveying pipeline and is transmitted to the inner cavity of the pump body. Intake ports and exhaust ports communicating with the inner cavity of the pump body are respectively connected to both ends of the pump body. An intake pipeline and an exhaust pipeline are respectively connected to the intake port and the exhaust port.

[0008] Further in the above description, an air inlet and an air outlet are respectively arranged on the blower. The ends of the air inlet and the air outlet are both exposed on the outer side surface of the blower. The end of the air outlet is connected and installed with the air flow conveying pipeline. Through the air outlet on the blower, the air flow generated by the operation of the blower passes through the air flow conveying pipeline and is introduced into the inner cavity of the pump body, further enhancing the heat dissipation and cooling effect on the pump body, thereby improving the operating stability of the pump body.

[0009] Further in the above description, the blower is composed of a housing, a driving motor and an impeller. The housing is installed on the support frame. A cavity communicating with both the air inlet and the air outlet is formed inside the housing. The impeller is installed in the cavity. The driving motor is installed on the housing, and the output shaft of the driving motor is coaxially connected with the impeller. When the impeller is driven to rotate by the driving motor, the air is forced to pass through the gaps between the blades provided on the impeller and is accelerated by the push of the impeller. Due to the very high rotational speed of the impeller, the air will also rotate at a high speed following the impeller, thereby increasing the kinetic energy and pressure of the air, so that it can be discharged from the air outlet, pass through the air flow conveying pipeline and enter the inner cavity of the pump body, thereby performing cold air cooling on the pump body and components such as the screw and bearing inside the pump body, and improving the operating stability of the pump body.

[0010] Further in the above description, a heat exchanger is connected to the side of the cooling oil tank through a cooling oil pipe. The heat exchanger is connected to the bottom of the pump body through a first oil injection pipe. A gearbox is arranged on the side of the pump body. The cooling oil tank is connected to the gearbox through a second oil injection pipe. A return oil pipe is connected to the cooling oil tank through a liquid extraction pump on the pump body. Through the arranged cooling oil tank, the cooling oil inside it can be heat-exchanged and cooled through the heat exchanger, and then the cooled cooling oil is injected into the inside of the pump body through the first oil injection pipe and the second oil injection pipe, so that a circulating cooling oil circuit is formed in the connection between the return oil pipe and the cooling oil tank;

[0011] When the cooling oil enters the inner cavity of the pump, the cold air of the fan is introduced through the intake valve, further enhancing the cooling and heat dissipation effect on the pump body. And under the drive of the fan, the cold air forms a certain pressure, reducing the adhesion and residue of the cooling oil in the inner cavity of the pump body and improving the utilization rate of the cooling oil.

[0012] Further in the above description, the bottom of the heat exchanger is connected with a cooling box. The top of the cooling box contacts the bottom of the heat exchanger. A cooling fan is installed inside the cooling box. The cooling box is provided to conduct air-cooled heat dissipation on the heat exchanger, further enhancing the temperature reduction effect on the cooling oil and preventing the cooling oil temperature from being too high to affect the cooling effect of the pump body.

[0013] Further in the above description, one end of the intake pipeline is communicated with the intake port, and the other end of the intake pipeline extends outside the chassis and is connected with a filter.

[0014] Further in the above description, one end of the exhaust pipeline is communicated with the exhaust port, and the other end of the exhaust pipeline is connected with a silencing pipe. One end of the silencing pipe extends outside the chassis, and the noise generated during the operation of the vacuum pump is reduced through the connected silencing pipe.

[0015] The beneficial effects of the present utility model: Through the provided cooling oil tank, the coolant inside the cooling oil tank enters the pump body to absorb and take away part of the heat generated by the pump body. During the long-term use of the vacuum pump, the coolant has a certain usage loss. The fan is used to communicate with the inner cavity of the pump body through the air flow pipeline. When the fan is driven, cold air flow is generated, which directly passes through the air flow pipeline to the inner cavity of the pump body. The cold air conducts air-cooled heat dissipation on the components inside the pump body, effectively reducing the working temperature inside the pump body. Thus, by combining the cold air heat dissipation and the coolant heat dissipation method of the cooling oil tank, the heat dissipation effect of the vacuum pump is further improved. It can ensure that the vacuum pump maintains stable performance and efficiency under long-term and high-intensity working conditions, extends the service life of the equipment. The intake port and the exhaust port provided at both ends of the pump body and communicated with the inner cavity enable the gas to smoothly enter and exit the pump body, enhancing the heat dissipation effect and working efficiency of the vacuum pump. Description of the Drawings

[0016] Figure 1 is the three-dimensional view of this embodiment;

[0017] Figure 2 is the schematic connection structure diagram of the fan in this embodiment;

[0018] Figure 3 is Figure 2 the partial enlarged view of A in

[0019] Figure 4 is the schematic connection structure diagram of the pump body in this embodiment;

[0020] Figure 5 Cross-sectional view of this embodiment;

[0021] Figure 6 Schematic diagram of the internal structure of this embodiment;

[0022] Figure 7 Schematic diagram of the connection structure of the cooling oil tank in this embodiment;

[0023] The reference numerals in the figure are respectively: 1 - chassis, 2 - pump body, 3 - driving member, 4 - support frame, 5 - controller, 6 - cooling oil tank, 7 - fan, 71 - housing, 72 - driving motor, 73 - impeller, 8 - air flow conveying pipeline, 9 - intake valve, 10 - intake port, 11 - exhaust port, 12 - intake pipeline, 13 - exhaust pipeline, 14 - air inlet, 15 - air outlet, 16 - cooling oil pipe, 17 - heat exchanger, 18 - first oil injection pipe, 19 - gearbox, 20 - second oil injection pipe, 21 - cooling box, 22 - cooling fan, 23 - filter, 24 - silencing pipe, 25 - oil return pipe. Specific embodiments

[0024] The present utility model will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0025] In this embodiment, referring to Figures 1-7 , the specific vacuum pump with a cold air cooling effect includes a chassis 1, a pump body 2 and a driving member 3. The pump body 2 is installed in the chassis 1 through a support frame 4. An inner cavity is formed inside the pump body 2. The driving member 3 is connected to one end of the pump body 2. A controller 5 is connected to the side of the chassis 1. A cooling oil tank 6 communicating with the pump body 2 is provided inside the chassis 1. A fan 7 is connected to the support frame 4. An air flow conveying pipeline 8 is connected to the fan 7. An intake valve 9 communicating with the inner cavity of the pump body 2 is connected to the pump body 2. One end of the air flow conveying pipeline 8 extends towards the pump body 2 and is paired and connected with the intake valve 9 on the pump body 2. The cold air flow generated by the drive of the fan 7 passes through the air flow conveying pipeline 8 and is transmitted to the inner cavity of the pump body 2. Intake ports 10 and exhaust ports 11 communicating with the inner cavity of the pump body 2 are respectively connected to both ends of the pump body 2. An intake pipeline 12 and an exhaust pipeline 13 are respectively connected to the intake port 10 and the exhaust port 11.

[0026] In this embodiment, an air inlet 14 and an air outlet 15 are respectively provided on the fan 7. The ends of the air inlet 14 and the air outlet 15 are both exposed on the outer side surface of the fan 7. The end of the air outlet 15 is connected and installed in communication with the air flow conveying pipeline 8. The air flow generated by the operation of the fan 7 passes through the air flow conveying pipeline 8 and is introduced into the inner cavity of the pump body 2 through the air outlet 15 on the fan 7, further enhancing the heat dissipation and cooling effect on the pump body 2, thereby improving the operating stability of the pump body 2.

[0027] In this embodiment, the blower 7 is composed of a housing 71, a driving motor 72 and an impeller 73. The housing 71 is installed on the support frame 4. A cavity communicating with both the air inlet 14 and the air outlet 15 is formed inside the housing 71. The impeller 73 is installed in the cavity. The driving motor 72 is installed on the housing 71, and the output shaft of the driving motor 72 is coaxially connected to the impeller 73;

[0028] When the driving motor 72 drives the impeller 73 to rotate, air is forced to pass through the gaps between the blades provided on the impeller 73 and is accelerated by the push of the impeller 73. Since the rotation speed of the impeller 73 is very high, the air will also rotate at a high speed following the impeller 73, thereby increasing the kinetic energy and pressure of the air, enabling it to be discharged from the air outlet, pass through the air flow conveying pipeline 8, and enter the inner cavity of the pump body 2, so as to conduct cold air cooling on the pump body 2 and components such as the screw and bearing inside the pump body 2, and improving the operating stability of the pump body 2.

[0029] In this embodiment, a heat exchanger 17 is connected to the side of the cooling oil tank 6 through a cooling oil pipe 16. The heat exchanger 17 is connected to the bottom of the pump body 2 through a first oil injection pipe 18. A gear box 19 is provided on the side of the pump body 2. The cooling oil tank 6 is connected to the gear box 19 through a second oil injection pipe 20. A return oil pipe 25 is connected to the cooling oil tank 6 on the pump body 2 through a liquid extraction pump. By providing the cooling oil tank 6, the cooling oil inside it can be heat-exchanged and cooled through the heat exchanger 17, and then the cooled cooling oil is injected into the inside of the pump body 2 through the first oil injection pipe 18 and the second oil injection pipe 20, forming a circulating cooling oil circuit in the connection between the return oil pipe 25 and the cooling oil tank 6;

[0030] When the cooling oil enters the inner cavity of the pump body 2, the cold air of the blower 7 is introduced through the air inlet valve 9, further enhancing the cooling and heat dissipation effect on the pump body 2. And under the drive of the blower 7, the cold air forms a certain pressure, reducing the adhesion and residue of the cooling oil in the inner cavity of the pump body 2 and improving the utilization rate of the cooling oil.

[0031] In this embodiment, a cooling box 21 is connected to the bottom of the heat exchanger 17. The heat dissipation end of the cooling box 21 is in contact with the bottom of the heat exchanger 17. A cooling fan 22 is installed inside the cooling box 21. The cooling box 21 is provided to conduct air cooling on the heat exchanger 17, further enhancing the cooling effect on the cooling oil and preventing the cooling oil temperature from being too high and affecting the cooling effect of the pump body 2.

[0032] In this embodiment, one end of the intake pipe 12 is communicated with the air inlet 10, and the other end of the intake pipe 12 extends outside the chassis 1 and is connected with a filter 23.

[0033] In this embodiment, one end of the exhaust pipe 13 is communicated with the exhaust port 11, the other end of the exhaust pipe 13 is connected with a silencing pipe 24, and one end of the silencing pipe 24 extends outside the chassis 1. The connected silencing pipe 24 reduces the noise generated during the operation of the vacuum pump.

[0034] In this embodiment, the blower 7 is a high-pressure blower.

[0035] The specific working principle in this embodiment is as follows: The return oil pipe 25 is used to connect the pump body 2 with the cooling oil tank 6. The bottom of the pump body 2 is connected to the output port of the heat exchanger 17 through the first oil injection pipe 18. The side of the cooling oil tank 6 is connected to the input end of the heat exchanger 17 through the cooling oil pipe 16, so as to form a circulating cooling oil circuit. When the liquid extraction pump is connected and the cooling oil in the cooling oil tank 6 enters the heat exchanger 17 through the cooling oil pipe 16 for cooling, the cooling oil is injected into the interior of the pump body 2 through the first oil injection pipe 18 at the output port of the heat exchanger 17, so that part of the heat generated by the pump body 2 can be absorbed and carried away when it enters the pump body 2;

[0036] The blower 7 is installed on the support frame 4, and the air outlet 15 of the blower 7 is communicated with the air inlet valve 9 of the pump body 2 through the air flow conveying pipe 8. When the motor on the blower 7 drives the impeller 73 to rotate, cold air flow is generated, which is directly transmitted to the inner cavity of the pump body 2 through the air flow conveying pipe 8, effectively reducing the working temperature inside the pump body 2. And under the airflow carrying pressure, the cooling oil in the inner cavity can be extruded and discharged, so as to further improve the heat dissipation effect of the vacuum pump by combining the cold air heat dissipation and the coolant heat dissipation of the cooling oil tank 6, which can ensure that the vacuum pump maintains stable performance and efficiency under long-term and high-intensity working conditions, extend the service life of the equipment, and enhance the heat dissipation effect and working efficiency of the vacuum pump.

[0037] The above is only a preferred embodiment of the present invention, and it is not intended to limit the present invention in any form. Although the present invention is disclosed above with a preferred embodiment, it is not intended to limit the present invention. Any person skilled in the art, without departing from the scope of the technical solution of the present invention, when making some changes or modifications using the above-disclosed technical content as equivalent change equivalent embodiments, but as long as it does not depart from the content of the technical solution of the present invention, any simple modification, equivalent change and modification made to the above embodiments according to the technical meaning of the present invention shall fall within the scope of the technical solution of the present invention.

Claims

1. A vacuum pump with a cold air cooling effect, comprising a chassis, a pump body and a driving member. The pump body is installed in the chassis through a support frame. An inner cavity is formed inside the pump body. The driving member is connected to one end of the pump body. A controller is connected to the side of the chassis. A cooling oil tank communicating with the pump body is provided inside the chassis. It is characterized in that: A blower is connected to the support frame, and an air flow conveying pipeline is connected to the blower. An intake valve communicating with the inner cavity of the pump body is connected to the pump body. One end of the air flow conveying pipeline extends towards the pump body and is paired and connected with the intake valve on the pump body. The cold air flow generated by the drive of the blower passes through the air flow conveying pipeline and is transmitted to the inner cavity of the pump body. Intake ports and exhaust ports communicating with the inner cavity of the pump body are respectively connected to both ends of the pump body. An intake pipeline and an exhaust pipeline are respectively connected to the intake port and the exhaust port.

2. The vacuum pump with a cold air cooling effect according to claim 1, wherein: An air inlet and an air outlet are respectively arranged on the blower. The ends of the air inlet and the air outlet are both exposed on the outer side surface of the blower. The end of the air outlet is connected and installed with the air flow conveying pipeline.

3. The vacuum pump with a cold air cooling effect according to claim 2, characterized in that: The blower is composed of a housing, a drive motor, and an impeller. The housing is installed on the support frame. A cavity communicating with both the air inlet and the air outlet is formed inside the housing. The impeller is installed in the cavity. The drive motor is installed on the housing, and the output shaft of the drive motor is coaxially connected with the impeller.

4. The vacuum pump with a cold air cooling effect according to claim 1, wherein: A heat exchanger is connected to the side surface of the cooling oil tank through a cooling oil pipe. The heat exchanger is connected to the bottom of the pump body through a first oil injection pipe. A gear box is arranged on the side surface of the pump body. The cooling oil tank is connected to the gear box through a second oil injection pipe. The pump body is connected to the cooling oil tank through a return oil pipe.

5. The vacuum pump with the cold air cooling effect according to claim 4, characterized in that: A cooling box is connected to the bottom of the heat exchanger. The cooling box is in contact with the heat exchanger, and a cooling fan is installed inside the cooling box.

6. The vacuum pump with a cold air cooling effect according to any one of claims 1-5, characterized in that: One end of the intake pipeline is communicated with the intake port, and the other end of the intake pipeline extends outside the chassis and is connected with a filter.

7. The vacuum pump with a cold air cooling effect according to any one of claims 1-5, characterized in that: One end of the exhaust pipeline is communicated with the exhaust port, and the other end of the exhaust pipeline is connected with a silencing pipe. One end of the silencing pipe extends outside the chassis.

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