Heat dissipation mechanism of roots pump vacuum unit

Abstract

The utility model discloses a heat dissipation mechanism of a roots pump vacuum unit, which relates to the technical field of roots pumps and comprises a pump body, an interlayer is arranged on the outer side of the middle of the pump body, a spiral metal pipe is fixedly mounted in the middle of the interlayer, and a water return box is fixedly mounted in the middle of one side of the pump body. According to the utility model, the spiral metal pipe is relatively special in shape, so that the contact area of cooling water and heat in the interlayer can be increased in the limited space of the interlayer, and the internal water circulation time can be prolonged, thereby increasing more heat exchange opportunities, enabling more heat to be absorbed and taken away by the cooling water, and improving the heat exchange efficiency. After heat exchange, the cooling water returns to the interior of the water return box and flows along the flow channel, heat in the cooling water is absorbed by the heat absorption pieces in the process, the heat absorption pieces prolong the circulation time of the cooling water in the flow channel, and the heat absorbed by the heat absorption pieces is dissipated by the cooling fan rotating at a high speed. And when the pump body works for a long time, the heat dissipation effect on the pump body can be effectively guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of Roots pumps, in particular to a heat dissipation mechanism of a Roots pump vacuum unit. Background Art

[0002] Roots vacuum pump, also known as Roots pump, is a variable displacement vacuum pump equipped with two bladed rotors rotating synchronously in opposite directions. There is a small gap between the rotors and between the rotors and the inner wall of the pump casing, but they do not touch each other. Currently, vacuum extraction equipment is used in many industries in the industrial field, and Roots vacuum pumps are usually the mainstream. With the continuous development of technology, Roots vacuum pumps have transitioned from single-stage pumps to two-stage pumps. As the power increases, its workload also increases.

[0003] In the prior art, Chinese patent CN220666535U discloses a water-cooled protective Roots pump, which includes a mounting plate, a motor mounted on the top of the mounting plate, an output end of the motor connected to a pump body, a water-cooling mechanism on the outside of the pump body, a limiting mechanism on the outside of the water-cooling mechanism, and a first protective cover mounted on the outer bottom of the pump body, and a second protective cover mounted on the top of the first protective cover.

[0004] In the prior art, the above-mentioned device wraps a water-cooling pipe around the outside of the pump body, injects cooling water into the water-cooling pipe, absorbs the heat generated by the pump body and then discharges it through the water outlet pipe, thereby absorbing and dissipating the heat of the pump body, and at the same time, the heat on the pump body is naturally dissipated by contacting the heat sink with the air. However, there are still some shortcomings when using the above-mentioned device. The water-cooling pipe of the above-mentioned device has no additional cooling source, and adopts natural dissipation to cool the internal cooling water. The cooling method is relatively simple. As the working time of the pump body increases, the heating rate of the cooling water in the water-cooling pipe will gradually be greater than the cooling rate in the absence of external interference. After working for a long time, the cooling effect of the cooling water on the pump body will fail, and heat can only be dissipated through the heat sink. The temperature of the pump body will become higher and higher, which will directly affect the service life of the components inside the pump body, and has great limitations. Utility Model Content

[0005] The purpose of the utility model is to solve the problem that some water-cooling pipes for cooling the temperature in the prior art have no additional refrigeration source, and the internal cooling water is cooled by natural emission. The cooling means are relatively simple. As the working time of the pump body increases, the heating rate of the cooling water in the water-cooling pipe will gradually be greater than the cooling rate in the absence of external interference. After a long period of operation, the cooling effect of the cooling water on the pump body will fail, which will cause the temperature of the pump body to become higher and higher, which will directly affect the service life of the components inside the pump body. A heat dissipation mechanism of a Roots pump vacuum unit is proposed.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a heat dissipation mechanism of a Roots pump vacuum unit, comprising a pump body, a partition is provided on the outer side of the middle part of the pump body, a spiral metal tube is fixedly installed in the middle part of the partition, a return water box is fixedly installed in the middle part of one side of the pump body, an interface pipe is penetrated and connected in the middle part of one side of the return water box, a return water pipe is penetrated and connected in the middle part of the interface pipe, one end of the return water pipe penetrates the pump body and is connected with one end of the spiral metal tube, a circulating pump is fixedly connected in the middle part of the other side of the return water box, an outlet pipe is fixedly connected at one end of the circulating pump, one end of the outlet pipe penetrates the pump body and is connected with the other end of the spiral metal tube, heat absorbing sheets are evenly fixedly installed in the middle part of the return water box, a flow channel is arranged between the heat absorbing sheets, and a cooling fan is fixedly installed in the middle part of one end of the return water box.

[0007] Preferably, a cavity is opened in the middle of the pump body, and a rotor is rotatably installed in the middle of the cavity.

[0008] Preferably, an air inlet pipe is connected through the middle of the upper end of the pump body.

[0009] Preferably, an air outlet pipe is connected through the middle of the lower end of the pump body.

[0010] Preferably, a motor is fixedly mounted on one end of the pump body, and brackets are fixedly mounted on both sides of the middle portion of the lower end of the pump body.

[0011] Compared with the prior art, the advantages and positive effects of the present invention are:

[0012] 1. In the utility model, when in use, the cooling water in the return water box will enter the spiral metal tube through the outlet pipe under the drive of the circulation pump. The shape of the spiral metal tube is relatively special, which can increase the contact area between the cooling water and the heat inside the interlayer within the limited space of the interlayer, and can also prolong the internal water circulation time, thereby increasing more heat exchange opportunities, so that more heat can be absorbed and taken away by the cooling water, and more effective cooling is achieved. The cooling water returns to the interior of the return water box through the return water pipe, and flows along the flow channel under the action of the circulation pump. During the process, the heat in the cooling water will be absorbed by the heat absorbing plate, which prolongs the circulation time of the cooling water in the flow channel and increases the heat exchange opportunities between the cooling water and the heat absorbing plate. The heat absorbed by the heat absorbing plate will be dissipated by the high-speed rotating cooling fan, thereby cooling the internal cooling water. When the pump body works for a long time, it can effectively ensure the heat dissipation effect of the pump body, and has higher practicality.

[0013] 2. In the present invention, a partition is directly opened on the outside of the cavity inside the pump body. When the rotor inside the cavity operates, the heat generated will be dissipated into the partition and will be directly taken away by the cooling water flowing in the spiral metal pipe arranged inside the partition, thereby achieving a better cooling effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 The utility model provides a three-dimensional structural diagram of the heat dissipation mechanism of a Roots pump vacuum unit;

[0015] Figure 2 The utility model provides a cross-sectional structural diagram of a heat dissipation mechanism of a Roots pump vacuum unit;

[0016] Figure 3 This utility model provides a schematic diagram of the connection relationship between the spiral metal tube and the interlayer of the heat dissipation mechanism of a Roots pump vacuum unit;

[0017] Figure 4 This utility model provides a schematic diagram of the connection relationship between the return water box and the spiral metal tube of the heat dissipation mechanism of a Roots pump vacuum unit;

[0018] Figure 5 The utility model provides a cross-sectional structural diagram of a return water box of a heat dissipation mechanism of a Roots pump vacuum unit.

[0019] Legend: 1. Pump body; 11. Air inlet pipe; 12. Air outlet pipe; 13. Bracket; 14. Motor; 15. Cavity; 16. Rotor; 2. Partition; 21. Spiral metal tube; 22. Return water box; 23. Cooling fan; 24. Interface pipe; 25. Return water pipe; 26. Circulation pump; 27. Outlet pipe; 28. Heat absorber; 29. ​​Flow channel. DETAILED DESCRIPTION

[0020] In order to more clearly understand the above-mentioned purpose, features and advantages of the present invention, the present invention is further described below with reference to the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features therein can be combined with each other without conflict.

[0021] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0022] Example 1, as Figure 1-5As shown, the utility model provides a heat dissipation mechanism of a Roots pump vacuum unit, comprising a pump body 1, a partition 2 is provided on the outer side of the middle part of the pump body 1, a spiral metal tube 21 is fixedly installed in the middle part of the partition 2, a return water box 22 is fixedly installed in the middle part of one side of the pump body 1, an interface pipe 24 is penetrated and connected in the middle part of one side of the return water box 22, a return water pipe 25 is penetrated and connected in the middle part of the interface pipe 24, one end of the return water pipe 25 penetrates the pump body 1 and is connected with one end of the spiral metal tube 21, a circulating pump 26 is fixedly connected in the middle part of the other side of the return water box 22, one end of the circulating pump 26 is connected and fixed with a water outlet pipe 27, one end of the water outlet pipe 27 penetrates the pump body 1 and is connected with the other end of the spiral metal tube 21, heat absorbing sheets 28 are evenly fixedly installed in the middle part of the return water box 22, flow channels 29 are arranged between the heat absorbing sheets 28, and a cooling fan 23 is fixedly installed in the middle part of one end of the return water box 22.

[0023] The following is a detailed description of the specific settings and functions of this embodiment. When in use, the cooling water in the return water box 22 will enter the spiral metal tube 21 through the outlet pipe 27 under the drive of the circulation pump 26. The spiral metal tube 21 has a special shape. It can increase the contact area between the cooling water and the internal heat of the interlayer 2 within the limited space of the interlayer 2, and can also extend the internal water circulation time, thereby increasing more opportunities for heat exchange, so that more heat can be absorbed and taken away by the cooling water, achieving more effective cooling. The cooling water returns to the interior of the return water box 22 through the return water pipe 25, and flows along the flow channel 29 under the action of the circulation pump 26. During the process, the heat in the cooling water will be absorbed by the heat absorbing plate 28. The heat absorbing plate 28 extends the cooling water circulation time in the flow channel 29 and increases the heat exchange opportunity between the cooling water and the heat absorbing plate 28. The heat absorbed by the heat absorbing plate 28 will be dissipated by the high-speed rotating cooling fan 23, thereby cooling the internal cooling water. When the pump body 1 works for a long time, it can effectively ensure the heat dissipation effect of the pump body 1, which has higher practicality.

[0024] Example 2, as Figure 1 、 Figure 2 and Figure 3 As shown, a cavity 15 is opened in the middle of the pump body 1, and a rotor 16 is rotatably installed in the middle of the cavity 15. An air inlet pipe 11 is connected through the middle of the upper end of the pump body 1, and an air outlet pipe 12 is connected through the middle of the lower end of the pump body 1. A motor 14 is fixedly installed at one end of the pump body 1, and brackets 13 are fixedly installed on both sides of the middle of the lower end of the pump body 1.

[0025] The effect achieved by the entire embodiment is that, when in use, when the rotor 16 inside the cavity 15 operates, the heat generated by it will be dissipated into the interlayer 2. At this time, the cooling water in the return water box 22 will enter the spiral metal tube 21 through the outlet pipe 27 under the drive of the circulation pump 26. The shape of the spiral metal tube 21 is relatively special. It can increase the contact area between the cooling water and the heat inside the interlayer 2 within the limited space of the interlayer 2, and can also extend the internal water circulation time, thereby increasing more opportunities for heat exchange, so that more heat can be absorbed and taken away by the cooling water, and more In order to effectively cool down the cooling water, the cooling water returns to the interior of the return water box 22 through the return pipe 25, and flows along the flow channel 29 under the action of the circulation pump 26. During the process, the heat in the cooling water will be absorbed by the heat absorbing sheet 28. The heat absorbing sheet 28 prolongs the circulation time of the cooling water in the flow channel 29 and increases the heat exchange opportunity between the heat absorbing sheet 28 and the heat absorbing sheet 28. The heat absorbed by the heat absorbing sheet 28 will be dissipated by the high-speed rotating cooling fan 23, thereby cooling the internal cooling water. When the pump body 1 works for a long time, it can effectively ensure the heat dissipation effect of the pump body 1, and has higher practicality.

[0026] The method of use and working principle of this device: When in use, the heat generated by the rotor 16 inside the cavity 15 will gradually dissipate into the interlayer 2 when it is in operation. At this time, the cooling water in the return water box 22 will enter the spiral metal tube 21 through the outlet pipe 27 under the drive of the circulation pump 26. The shape of the spiral metal tube 21 is relatively special. It can increase the contact area between the cooling water and the heat inside the interlayer 2 within the limited space of the interlayer 2, and can also extend the internal water circulation time, thereby increasing the opportunity for more heat exchange, so that more heat can be absorbed and taken away by the cooling water, achieving more effective cooling. Under the action of 26, the cooling water will return to the inside of the return box 22 through the return pipe 25 after heat exchange, and flow along the flow channel 29. During the process, the heat in the cooling water will be absorbed by the heat absorbing plate 28. The heat absorbing plate 28 not only prolongs the circulation time of the cooling water in the flow channel 29, but also increases the heat exchange opportunity between the cooling water and the heat absorbing plate 28. The heat absorbed by the heat absorbing plate 28 will be dissipated by the high-speed rotating cooling fan 23, thereby cooling the heat absorbing plate 28, and then cooling the internal cooling water. When the pump body 1 works for a long time, it can effectively ensure the heat dissipation effect of the pump body 1, and has higher practicality.

[0027] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any other form. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes for application in other fields. However, any simple modification, equivalent change and modification of the above embodiment made according to the technical essence of the present invention without departing from the content of the technical solution of the present invention shall still fall within the scope of protection of the technical solution of the present invention.

Claims

1. A heat dissipation mechanism of a Roots pump vacuum unit, comprising a pump body (1), characterized in that: A partition (2) is provided on the outer side of the middle of the pump body (1), a spiral metal tube (21) is fixedly installed in the middle of the partition (2), a return water box (22) is fixedly installed in the middle of one side of the pump body (1), a mouthpiece (24) is connected through the middle of one side of the return water box (22), a return water pipe (25) is connected through the middle of the mouthpiece (24), one end of the return water pipe (25) passes through the pump body (1) and is connected to one end of the spiral metal tube (21), and the return water box (22) is fixedly installed in the middle of one side of the return water box (22). A circulation pump (26) is connected and fixed in the middle of the other side of the box (22), and a water outlet pipe (27) is connected and fixed at one end of the circulation pump (26). One end of the water outlet pipe (27) passes through the pump body (1) and is connected to the other end of the spiral metal tube (21). Heat absorbing sheets (28) are evenly fixed and installed in the middle of the return water box (22), and flow channels (29) are arranged between the heat absorbing sheets (28). A cooling fan (23) is fixed and installed in the middle of one end of the return water box (22).

2. The heat dissipation mechanism of a Roots pump vacuum unit according to claim 1, characterized in that: A cavity (15) is provided in the middle of the pump body (1), and a rotor (16) is rotatably mounted in the middle of the cavity (15).

3. The heat dissipation mechanism of a Roots pump vacuum unit according to claim 1, characterized in that: An air inlet pipe (11) is connected through the middle of the upper end of the pump body (1).

4. The heat dissipation mechanism of a Roots pump vacuum unit according to claim 1, characterized in that: An air outlet pipe (12) is connected through the middle of the lower end of the pump body (1).

5. The heat dissipation mechanism of a Roots pump vacuum unit according to claim 1, characterized in that: A motor (14) is fixedly mounted on one end of the pump body (1), and brackets (13) are fixedly mounted on both sides of the middle portion of the lower end of the pump body (1).

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