Air-cooled Roots vacuum pump with circulation channel

Abstract

The utility model relates to the technical field of vacuum pumps, in particular to an air-cooled Roots vacuum pump with a circulation channel, which comprises a shell, a vacuum pump body is fixedly connected to an inner cavity of the shell, a plurality of first water pipes are attached to the outer wall of the vacuum pump body, and first water tanks are fixedly connected to two ends of each first water pipe. One side of the first water tank fixedly communicates with a plurality of second water pipes, the second water pipes fixedly communicate with the first water pipes, the other side of the first water tank at the upper end fixedly communicates with a third water pipe, and the end, penetrating out of the shell, of the third water pipe fixedly communicates with a second water tank; one end of the water pump fixedly communicates with a fourth water pipe. Compared with the prior art, water in the first water pipe can absorb heat emitted from the vacuum pump body all the time, the temperature in the vacuum pump body is reduced, and the situation that the vacuum pump body is damaged due to the fact that the vacuum pump body is heated all the time is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to a vacuum pump technical field especially relates to a gas cooling type roots vacuum pump with ring flow channel. BACKGROUND

[0002] Roots vacuum pump refers to the pump in the two opposite direction synchronous rotation vane rotor, rotor, rotor and pump shell inner wall have small gap and do not contact each other a kind of variable volume vacuum pump, roots vacuum pump is a kind of internal compression-free vacuum pump, usually compression ratio is very low, so high, middle vacuum pump needs front pump, front stage needs to be equipped with oil seal, water ring and can be directly discharged to atmosphere.

[0003] In the prior art, the patent number CN216767755U of China is proposed two-stage air-cooled roots vacuum pump structure optimization, the second stage pump body adopts air return air cooling, saves a heat exchange device, on the basis of realizing the same vacuumizing effect, smaller volume, and lower manufacturing cost, increase the silencing device in air return air pipeline and second exhaust pipeline, reduce noise, improve use effect, the patent number CN214837107U of China is proposed low-noise air-cooled roots vacuum pump, through three groups of independently operated servo motor, transmission rod and telescopic rotor, so that two groups can be controlled arbitrarily, so as to adjust the direction of transportation, when multi-pipeline transportation, solve the situation that general roots vacuum pump cannot adapt, but in actual application, there is still a gas-cooled roots vacuum pump with ring flow channel in use only through the gas blown into the vacuum pump cavity by the gas inlet on both sides of the vacuum pump, and the temperature of the inner cavity of the vacuum pump will continue to rise after long-term operation, and the temperature of the air around the vacuum pump will also rise with the temperature rise of the vacuum pump, so that the temperature of the gas blown into the vacuum pump by the gas inlet will also rise, and the cooling effect of the vacuum pump will also decrease, so that the temperature of the inner cavity of the vacuum pump is difficult to reduce, and the problem of easy damage of the vacuum pump is caused, therefore, we disclose a gas-cooled roots vacuum pump with ring flow channel. UTILITY MODEL CONTENTS

[0004] Therefore, the utility model aims at providing a gas-cooled roots vacuum pump with ring flow channel to solve the problem of continuous temperature rise of the inner cavity of the vacuum pump and difficult to reduce, and the problem of easy damage of the vacuum pump.

[0005] The utility model provides a kind of air-cooled roots vacuum pump with circulation channel based on above purpose, including shell, the inner chamber of the shell is fixedly connected with vacuum pump body, the outer wall of the vacuum pump body is attached with several first water pipes, the both ends of the first water pipe are fixedly connected with first water tank, the side of the first water tank is fixedly communicated with several second water pipes, the second water pipe is fixedly communicated with the first water pipe, the other side of the first water tank in upper end is fixedly communicated with third water pipe, one end of the third water pipe fixedly communicated with second water tank is penetrated to the outside of the shell, the bottom of the second water tank is fixedly communicated with water pump by pipeline, one end of the water pump is fixedly communicated with fourth water pipe, one end of the fourth water pipe is penetrated to the first water tank fixedly communicated with the lower end of the shell in the shell, the both sides of the shell are provided with air-cooled assembly, and the air-cooled assembly is used to reduce the temperature of the inner chamber of the vacuum pump body.

[0006] Preferably, the inner wall of the shell is fixedly connected with a support, and the support is fixedly connected with the vacuum pump body.

[0007] Preferably, the third water pipe and the fourth water pipe are located at the upper and lower ends of the second water tank respectively.

[0008] Preferably, the inner chamber of the first water pipe is fixedly connected with several support rods, the middle part of the support rod is fixedly connected with a fixed rod, the fixed rod is the same shape as the first water pipe and is located in the middle part of the first water pipe, the middle part of the fixed rod is fixedly connected with several fixed rings, the outer wall of the fixed ring is rotatably sleeved with a rotating fan, the outer wall of the rotating fan is fixedly connected with a brush, and the brush is attached to the inner wall of the first water pipe.

[0009] Preferably, the air-cooled assembly includes an air pump fixedly connected to the bottom of the second water tank, one end of the air pump is fixedly communicated with a first air pipe, one end of the first air pipe is penetrated into the second water tank, one end of the first air pipe in the second water tank is fixedly communicated with a second air pipe, the both sides of the second air pipe are fixedly communicated with an air tank, the side of the air tank is fixedly communicated with several third air pipes, and the third air pipes penetrate the shell and the first water pipe to the vacuum pump body.

[0010] Preferably, the first air pipe is S-shaped, and the bottom of the shell and the second water tank is fixedly connected with a fixed bottom plate.

[0011] The utility model discloses a beneficial effect: the heat generated in the vacuum pump body can be absorbed by the water in the first water pipe, the water in the first water pipe can flow into the first water tank through the second water pipe, the water in the first water tank at the upper end can flow into the second water tank through the third water pipe, the water in the second water tank after a certain heat dissipation can enter the first water tank at the lower end through the fourth water pipe under the action of the water pump, then the first water tank at the lower end and the second water pipe enter the first water pipe, and the hot water in the first water pipe that has absorbed the heat of the outer wall of the vacuum pump body is pushed upwards into the third water pipe, water circulation is completed, the water in the first water pipe can always absorb the heat generated in the vacuum pump body, the temperature in the vacuum pump body is reduced, the vacuum pump body is not always heated, and the condition that the vacuum pump body is damaged is caused to appear;

[0012] The air absorbed by the air pump enters the first air pipe, the air in the first air pipe is transferred to the second air pipe after being cooled by the cold water in the second water tank, and then is input into the air tank, the cooled air in the air tank is transmitted into the vacuum pump body through the third air pipe, the vacuum pump body is cooled, the air cooling effect is improved, the temperature rising speed in the vacuum pump body is reduced, and the service life of the vacuum pump body is improved. BRIEF DESCRIPTION OF DRAWINGS

[0013] In order to more clearly illustrate the technical scheme in the utility model or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or the prior art description, and obviously, the drawings in the following description are only the utility model, and other drawings can be obtained according to these drawings without creative labor for the ordinary skilled in the art.

[0014] Figure 1 It is the partial cutaway three-dimensional structure schematic view of the second water tank of the utility model;

[0015] Figure 2 It is the partial cutaway three-dimensional structure schematic view of the second water tank of the utility model;

[0016] Figure 3 It is the partial cutaway three-dimensional structure schematic view of the second water tank of the utility model;

[0017] Figure 4 It is the partial cutaway three-dimensional structure schematic view of the second water tank of the utility model;

[0018] Figure 5 It is the partial cutaway three-dimensional structure schematic view of the second water tank of the utility model;

[0019] In the drawing, the mark is:

[0020] 1, shell; 2, vacuum pump body; 3, first water pipe; 4, first water tank; 5, second water pipe; 6, third water pipe; 7, second water tank; 8, water pump; 9, fourth water pipe; 10, air pump; 11, first air pipe; 12, second air pipe; 13, air tank; 14, third air pipe; 15, support rod; 16, fixed rod; 17, fixed ring; 18, rotating fan; 19, fixed bottom plate. DETAILED DESCRIPTION

[0021] To make the purpose, technical scheme and advantages of the present application clearer, the present application will be further described in detail below with specific examples.

[0022] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the present application should be understood as the common meaning understood by those skilled in the art to which the present application belongs. The "first", "second" and similar words used in the present application do not represent any order, quantity or importance, but are only used to distinguish different components. "Include" or "contain" and similar words mean that the elements or objects before the word cover the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connected" or "connected" and similar words are not limited to physical or mechanical connection, but can include electrical connection, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to represent the relative positional relationship, and when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0023] As Figures 1-5As shown, a gas-cooled Roots vacuum pump with a circulating channel, comprising a shell 1, the inner cavity of the shell 1 is fixedly connected with a vacuum pump body 2, the outer wall of the vacuum pump body 2 is attached with a plurality of first water pipes 3, both ends of the first water pipes 3 are fixedly connected with first water tanks 4, one side of the first water tanks 4 is fixedly communicated with a plurality of second water pipes 5, the second water pipes 5 are fixedly communicated with the first water pipes 3, the other side of the upper first water tank 4 is fixedly communicated with a third water pipe 6, one end of the third water pipe 6 penetrating to the outside of the shell 1 is fixedly communicated with a second water tank 7, the bottom end of the second water tank 7 is fixedly communicated with a water pump 8 through a pipeline, one end of the water pump 8 is fixedly communicated with a fourth water pipe 9, one end of the fourth water pipe 9 penetrating into the shell 1 is fixedly communicated with the first water tank 4 at the lower end, the shell 1 is provided with air-cooling assemblies on both sides, which are used to reduce the temperature in the inner cavity of the vacuum pump body 2, the inner wall of the shell 1 is fixedly connected with a support, the support is fixedly connected with the vacuum pump body 2, the third water pipe 6 and the fourth water pipe 9 are located at the upper and lower ends of the second water tank 7 respectively, the inner cavity of the first water pipe 3 is fixedly connected with a plurality of supporting rods 15, the middle part of the supporting rods 15 is fixedly connected with a fixed rod 16, the fixed rod 16 is the same shape as the first water pipe 3 and is located in the middle part of the first water pipe 3, the middle part of the fixed rod 16 is fixedly connected with a plurality of fixed rings 17, the outer wall of the fixed rings 17 is rotatably sleeved with a rotating fan 18, the outer wall of the rotating fan 18 is fixedly connected with a brush, the brush is attached to the inner wall of the first water pipe 3, in use, the vacuum pump body 2 is fixedly connected in the inner cavity of the shell 1, so that the position of the vacuum pump body 2 is fixed by the shell 1, the outer wall of the vacuum pump body 2 is attached with a plurality of first water pipes 3, so that the heat generated in the vacuum pump body 2 is absorbed by the water in the first water pipes 3, both ends of the first water pipes 3 are fixedly connected with first water tanks 4, one side of the first water tanks 4 is fixedly communicated with a plurality of second water pipes 5, the second water pipes 5 are fixedly communicated with the first water pipes 3, so that the water in the first water pipes 3 can flow into the first water tanks 4 through the second water pipes 5, the other side of the upper first water tank 4 is fixedly communicated with a third water pipe 6, one end of the third water pipe 6 penetrating to the outside of the shell 1 is fixedly communicated with a second water tank 7, so that the water in the upper first water tank 4 can flow into the second water tank 7 through the third water pipe 6, the bottom end of the second water tank 7 is fixedly communicated with a water pump 8 through a pipeline, one end of the water pump 8 is fixedly communicated with a fourth water pipe 9, one end of the fourth water pipe 9 penetrating into the shell 1 is fixedly communicated with the first water tank 4 at the lower end, so that the water in the second water tank 7 after a certain heat dissipation enters the first water tank 4 at the lower end through the fourth water pipe 9 under the action of the water pump 8, then enters the first water pipe 3 from the first water tank 4 at the lower end and the second water pipe 5, the hot water in the first water pipe 3 absorbing the heat of the outer wall of the vacuum pump body 2 is pushed upwards into the third water pipe 6, completing water circulation, so that the water in the first water pipe 3 can always absorb the heat emitted by the vacuum pump body 2, reducing the temperature in the vacuum pump body 2, reducing the continuous heating of the vacuum pump body 2, causing the vacuum pump body 2 to be damaged, the third water pipe 6 and the fourth water pipe 9 are located at the upper and lower ends of the second water tank 7 respectively,Cold water enters from the bottom of the first water pipe 3 and flows out from the top. Several support rods 15 are fixedly connected to the inner cavity of the first water pipe 3. A fixing rod 16 is fixedly connected to the middle of each support rod 15. The fixing rod 16 is the same shape as the first water pipe 3 and located in the middle of the first water pipe 3. Several fixing rings 17 are fixedly connected to the middle of the fixing rod 16. The first water pipe 3 is fixed to the position of the fixing rod 16 via the support rods 15, thereby fixing the position of the fixing rings 17. A rotating fan 18 is rotatably sleeved on the outer wall of the fixing ring 17. A brush is fixedly connected to the outer wall of the rotating fan 18. The brush is in contact with the inner wall of the first water pipe 3. When the water flows in the first water pipe 3, it drives the rotating fan 18 to rotate around the fixing ring 17, causing the brush on the outer wall of the rotating fan 18 to rub against the inner wall of the first water pipe 3. This reduces the formation of scale on the inner wall of the first water pipe 3, preventing scale from affecting heat transfer and thus maintaining the water's heat absorption effect.

[0024] As a preferred embodiment of this example, Figures 2-4 As shown, the air-cooling assembly includes an air pump 10 fixedly connected to the bottom of a second water tank 7. One end of the air pump 10 is fixedly connected to a first air pipe 11, one end of which extends into the second water tank 7. The end of the first air pipe 11 inside the second water tank 7 is fixedly connected to a second air pipe 12. Both sides of the second air pipe 12 are fixedly connected to air boxes 13. One side of the air box 13 is fixedly connected to several third air pipes 14. The third air pipes 14 pass through the outer shell 1 and the first water pipe 3 to the vacuum pump body 2. The first air pipe 11 is S-shaped. The bottom ends of both the outer shell 1 and the second water tank 7 are fixedly connected to a fixed base plate 19. The air pump 10 is fixedly connected to the bottom end of the second water tank 7. One end of the air pump 10 is fixedly connected to the first air pipe 11, one end of which extends into the second water tank 7. The end of the first air pipe 11 inside the second water tank 7 is fixedly connected to the second air pipe 12. Both sides of the second air pipe 12 are fixedly connected to air boxes 13, so that the second water tank 7 fixes the position of the air pump 10, allowing the air absorbed by the air pump 10 to enter the first air pipe 11. The air entering the first air pipe 11 can be cooled by the cold water in the second water tank 7 and then transferred to the second air pipe 12, and then input into the air box 13. Several third air pipes 14 are fixedly connected to one side of the air box 13. The third air pipes 14 pass through the outer shell 1 and the first water pipe 3 to the vacuum pump body 2, so that the air cooled in the air box 13 is transferred into the vacuum pump body 2 through the third air pipes 14, directly cooling the vacuum pump body 2, improving the cooling effect of the air, reducing the rate of temperature rise in the vacuum pump body 2, and improving the service life of the vacuum pump body 2. The first air pipe 11 is S-shaped, so that the air in the first air pipe 11 can stay in the second water tank 7 for a sufficient time for cooling.

[0025] Those skilled in the art will understand that the above discussion of any of the embodiments is merely exemplary in nature and is not intended to imply that the scope of the present application, including the claims, is limited to these examples; the above embodiments or technical features among different embodiments can also be combined, the steps can be implemented in any order, and there are many other changes of different aspects of the present application as described above, which are not provided in details for the sake of brevity.

[0026] The present application is intended to cover all such alternatives, modifications, and variations as fall within the broad scope of the appended claims. Accordingly, any and all such alternatives, modifications and variations are intended to be encompassed by the appended claims.

Claims

1. A gas-cooled Roots vacuum pump with a circulating channel, comprising a housing (1), characterized in that, The inner cavity of the outer shell (1) is fixedly connected to a vacuum pump body (2). The outer wall of the vacuum pump body (2) is fitted with several first water pipes (3). Both ends of the first water pipes (3) are fixedly connected to a first water tank (4). One side of the first water tank (4) is fixedly connected to several second water pipes (5). The second water pipes (5) are fixedly connected to the first water pipes (3). The other side of the upper first water tank (4) is fixedly connected to a third water pipe (6). One end of the third water pipe (6) that extends through the outer shell (1) is fixedly connected to a second water tank (7). The bottom end of the second water tank (7) is fixedly connected to a water pump (8) through a pipe. One end of the water pump (8) is fixedly connected to a fourth water pipe (9). One end of the fourth water pipe (9) extends through the outer shell (1) and is fixedly connected to the first water tank (4) at the lower end of the outer shell (1). Air cooling components are provided on both sides of the outer shell (1). The air cooling components are used to reduce the temperature of the inner cavity of the vacuum pump body (2).

2. The air-cooled Roots vacuum pump with a circulating channel according to claim 1, characterized in that, The inner wall of the outer shell (1) is fixedly connected to a bracket, which is fixedly connected to the vacuum pump body (2).

3. The air-cooled Roots vacuum pump with a circulating channel according to claim 1, characterized in that, The third water pipe (6) and the fourth water pipe (9) are located at the upper and lower ends of the second water tank (7), respectively.

4. The air-cooled Roots vacuum pump with a circulating channel according to claim 1, characterized in that, The inner cavity of the first water pipe (3) is fixedly connected with several support rods (15), and a fixing rod (16) is fixedly connected to the middle of the support rods (15). The fixing rod (16) has the same shape as the first water pipe (3) and is located in the middle of the first water pipe (3). The middle of the fixing rod (16) is fixedly connected with several fixing rings (17). A rotating fan (18) is rotatably sleeved on the outer wall of the fixing ring (17). A brush is fixedly connected to the outer wall of the rotating fan (18). The brush is in contact with the inner wall of the first water pipe (3).

5. The air-cooled Roots vacuum pump with a circulating channel according to claim 1, characterized in that, The air-cooling assembly includes an air pump (10) fixedly connected to the bottom of the second water tank (7). One end of the air pump (10) is fixedly connected to a first air pipe (11). One end of the first air pipe (11) extends into the second water tank (7). One end of the first air pipe (11) located in the second water tank (7) is fixedly connected to a second air pipe (12). Both sides of the second air pipe (12) are fixedly connected to air boxes (13). One side of the air box (13) is fixedly connected to several third air pipes (14). The third air pipes (14) penetrate the outer shell (1) and the first water pipe (3) to the vacuum pump body (2).

6. The air-cooled Roots vacuum pump with a circulating channel according to claim 5, characterized in that, The first air pipe (11) is S-shaped, and the bottom of the outer shell (1) and the second water tank (7) are both fixedly connected to a fixed base plate (19).

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