Vacuum pump

Abstract

The utility model discloses a vacuum pump, which relates to the technical field of vacuum welding, and comprises a motor, a pump body arranged on one side of the motor, and a frame body fixed at the bottoms of the motor and the pump body, one side of the pump body is fixedly connected with an exhaust drain pipe, a filter element is arranged in the exhaust drain pipe, and a quick release piece is arranged in the filter element. A positioning piece is arranged in the exhaust drainage pipe, the quick release piece comprises a connecting rod movably sleeved with the filter element, a limiting block is fixedly connected to the top of the connecting rod and located at the top of the filter element, and a bolt is fixedly connected to the bottom of the connecting rod and located at the bottom of the filter element. According to the vacuum pump provided by the utility model, the filter element can be replaced, maintained and cleaned more simply and efficiently through the quick-release piece, complicated disassembly steps are not needed, and the filter element can be quickly taken out to be cleaned, replaced or checked only by unscrewing the connecting rod, so that the problems that the filter element of a small vacuum pump is difficult to take out and the filter element is difficult to clean can be solved. And blockage may be caused.

Description

Technical Field

[0001] The utility model relates to the technical field of vacuum welding, in particular to a vacuum pump. Background Art

[0002] The vacuum pump for vacuum beam welding machine is used to create and maintain the vacuum environment in the working area. Vacuum beam welding machine is a kind of equipment used for welding and heat treatment. It effectively prevents the adverse effects such as oxidation, gas reaction and pollution by establishing a vacuum environment in the welding area or working area.

[0003] During normal operation, the vacuum pump discharges gas into the environment through the exhaust and drain ports. However, due to the compact structure of some small vacuum pumps, the space inside the exhaust and drain ports is relatively narrow, which may limit the space and convenience for replacing the filter element. If the filter element cannot be replaced in time, long-term use may cause the filter element to become clogged. Utility Model Content

[0004] In view of the problem that the filter element of some existing small vacuum pumps is inconvenient to replace, which may cause the filter element to be blocked, the present utility model is proposed.

[0005] Therefore, the utility model aims to provide a vacuum pump, which aims to solve the problem that the filter element of some existing small vacuum pumps is inconvenient to replace, which may cause the filter element to be blocked.

[0006] In order to solve the above technical problems, the utility model provides the following technical solutions: a vacuum pump, comprising a motor, a pump body installed on one side of the motor, and a frame fixed to the motor and the bottom of the pump body, one side of the pump body is fixedly connected to an exhaust and drain pipe, a filter element is provided inside the exhaust and drain pipe, a quick-release part is provided inside the filter element, a positioning part is provided inside the exhaust and drain pipe, the quick-release part comprises a connecting rod movably sleeved inside the filter element, a limiting block is fixedly connected to the top of the connecting rod and located at the top of the filter element, and a bolt is fixedly connected to the bottom of the connecting rod and located at the bottom of the filter element. The quick-release part can facilitate quick replacement of the filter element and is simple to operate.

[0007] As a preferred solution of the vacuum pump described in the utility model, the positioning member includes a fixing plate fixed inside the exhaust and drainage pipe, and a positioning block is fixedly connected to the surface of the fixing plate. The fixing plate can support the filter element to prevent the filter element from falling directly into the inside of the pump body.

[0008] As a preferred solution of the vacuum pump described in the utility model, the quick-release part also includes a positioning hole opened on the surface of the fixed plate, the positioning hole is threadedly connected to the bolt, the bolt and the limit block are larger than the width of the connecting rod, which can prevent the connecting rod from separating from the filter element.

[0009] As a preferred solution of the vacuum pump described in the utility model, the positioning member also includes a groove opened at the bottom of the filter element, the groove is located on the top of the positioning block and is adapted thereto, the filter element is located on the surface of the fixed plate, and the positioning block and the groove can make the filter element installation more stable.

[0010] As a preferred solution of the vacuum pump described in the utility model, wherein: the output end of the motor is fixedly connected to the pump shaft, the pump shaft is located inside the pump body, the surface of the pump shaft is movably sleeved with a front pump cover, one end of the front pump cover and located on the surface of the pump shaft is fixedly connected to a long impeller, a short impeller is provided on one side of the long impeller and away from the side of the front pump cover, the long impeller and the short impeller are both fixed on the surface of the pump shaft, and a rear pump cover is provided on one side of the short impeller and away from the long impeller.

[0011] As a preferred solution of the vacuum pump described in the utility model, the front pump cover, the long impeller, the short impeller and the inner sides of the rear pump cover are all provided with cover discs, the cover discs are fixed on the surface of the pump shaft, and the surface of the cover discs is provided with an exhaust valve, the exhaust valve can control the gas flow direction, discharge the gas and prevent the gas from flowing back into the pump, so as to maintain the vacuum degree and stability of the system.

[0012] As a preferred solution of the vacuum pump described in the utility model, wherein: an air suction pipe is provided at the top of the front pump cover, and a connecting pipe is provided at the top of the front pump cover and the rear pump cover.

[0013] Beneficial effects of the utility model:

[0014] 1. The utility model can make the replacement, maintenance and cleaning of the filter element simpler and more efficient through the quick-release parts, and no complicated disassembly steps are required. The filter element can be quickly taken out for cleaning, replacement or inspection by simply unscrewing the connecting rod, thereby solving the problem that the filter element of a small vacuum pump is difficult to remove and may cause blockage.

[0015] 2. The utility model is provided with a positioning piece. When in use, it is only necessary to place the filter element inside the exhaust and drainage pipe and press it so that the groove opened at the bottom fits with the positioning block on the surface of the fixing plate. When the two are completely fitted, the bottom of the bolt is located at the top of the positioning hole. Then, the connecting rod is directly screwed to make the bolt and the positioning hole threadedly connected to complete the installation of the filter element. This method has a simple structure and is easy to operate. The positioning piece can make the replacement and maintenance of the filter element faster and more efficient. Once the filter element is positioned in the correct position, the operator can quickly and accurately remove and install the filter element, reducing errors and delays in the maintenance process. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following briefly introduces the drawings required for the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them:

[0017] Figure 1 The utility model is a schematic diagram of the overall structure of a vacuum pump.

[0018] Figure 2 This is a diagram showing the overall structure of a vacuum pump of the present utility model.

[0019] Figure 3 The utility model is a schematic diagram of the filter element structure of a vacuum pump.

[0020] Figure 4 The utility model is a schematic diagram of the structure of a positioning member of a vacuum pump.

[0021] Figure 5 This is a structural diagram showing a positioning piece and a quick-release piece of a vacuum pump according to the utility model.

[0022] Description of reference numerals:

[0023] 1. Motor; 2. Pump body; 21. Intake pipe; 22. Connecting pipe; 23. Exhaust and drain pipe; 231. Filter element; 24. Quick release parts; 241. Connecting rod; 242. Limit block; 243. Bolt; 25. Positioning piece; 251. Fixing plate; 252. Positioning block; 253. Positioning hole; 254. Groove; 26. Pump shaft; 27. Front pump cover; 28. Long impeller; 281. Short impeller; 282. Cover disc; 283. Exhaust valve; 284. Rear pump cover; 3. Frame. DETAILED DESCRIPTION

[0024] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0025] Example 1

[0026] Reference Figure 1-5 , which is the first embodiment of the utility model, provides a vacuum pump, which includes a motor 1, a pump body 2 installed on one side of the motor 1, and a frame 3 fixed to the motor 1 and the bottom of the pump body 2, an exhaust and drain pipe 23 is fixedly connected to one side of the pump body 2, a filter element 231 is provided inside the exhaust and drain pipe 23, a quick release part 24 is provided inside the filter element 231, and a positioning part 25 is provided inside the exhaust and drain pipe 23;

[0027] The quick-release component 24 includes a connecting rod 241 movably sleeved inside the filter element 231, a limiting block 242 is fixedly connected to the top of the connecting rod 241 and located at the top of the filter element 231, and a bolt 243 is fixedly connected to the bottom of the connecting rod 241 and located at the bottom of the filter element 231. The positioning component 25 includes a fixing plate 251 fixed inside the exhaust and drain pipe 23, and a positioning block 252 is fixedly connected to the surface of the fixing plate 251. The quick-release component 24 also includes a positioning hole 253 opened on the surface of the fixing plate 251, and the positioning hole 253 is threadedly connected to the bolt 243. The positioning component 25 also includes a groove 254 opened at the bottom of the filter element 231, and the groove 254 is located at the top of the positioning block 252 and is adapted thereto. The filter element 231 is located on the surface of the fixing plate 251.

[0028] When replacing the filter element 231, directly rotate the connecting rod 241 to drive the bolt 243 to rotate, so that the bolt 243 is disengaged from the positioning hole 253, and then directly pull the connecting rod 241 to make the top of the bolt 243 contact the bottom of the filter element 231, so that the pulling force is transmitted from the surface of the bolt 243 to the bottom of the filter element 231, so that the groove 254 can be separated from the positioning block 252, so that the filter element 231 can be taken out. The quick release part 24 can make the replacement, maintenance and cleaning of the filter element 231 simpler and more efficient, and no complicated disassembly steps are required. The filter element 231 can be quickly removed for cleaning, replacement or inspection by simply unscrewing the connecting rod 241, thereby solving the problem that the small vacuum pump filter element 231 is difficult to remove and may cause blockage.

[0029] When installing the filter element 231, it is only necessary to place the filter element 231 inside the exhaust drain pipe 23 and press it so that the groove 254 opened at the bottom fits with the positioning block 252 on the surface of the fixing plate 251. When the two are completely fitted together, the bottom of the bolt 243 is located at the top of the positioning hole 253. Then, the connecting rod 241 is directly turned to thread the bolt 243 and the positioning hole 253 to complete the installation of the filter element 231. This method has a simple structure and is easy to operate. The positioning member 25 can make the replacement and maintenance of the filter element 231 faster and more efficient. Once the filter element 231 is positioned in the correct position, the operator can quickly and accurately remove and install the filter element, reducing errors and delays during maintenance.

[0030] Example 2

[0031] Reference Figure 1-5 , which is the second embodiment of the utility model, and this embodiment is different from the first embodiment in that:

[0032] A pump shaft 26 is fixedly connected to the output end of the motor 1, and the pump shaft 26 is located inside the pump body 2. A front pump cover 27 is movably sleeved on the surface of the pump shaft 26. A long impeller 28 is fixedly connected to one end of the front pump cover 27 and located on the surface of the pump shaft 26. A short impeller 281 is provided on one side of the long impeller 28 and away from the front pump cover 27. Both the long impeller 28 and the short impeller 281 are fixed on the surface of the pump shaft 26. A rear pump cover 284 is provided on one side of the short impeller 281 and away from the long impeller 28. A cover disc 282 is provided on the inner side of the front pump cover 27, the long impeller 28, the short impeller 281 and the rear pump cover 284. The cover disc 282 is fixed on the surface of the pump shaft 26. An exhaust valve 283 is provided on the surface of the cover disc 282. An air intake pipe 21 is provided on the top of the front pump cover 27, and a connecting pipe 22 is provided on the top of the front pump cover 27 and the rear pump cover 284.

[0033] During use, starting the motor 1 can make the pump body 2 work normally.

[0034] The remaining structures are the same as those of Example 1.

[0035] It should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A vacuum pump, comprising a motor (1), a pump body (2) mounted on one side of the motor (1), and a frame (3) fixed to the bottom of the motor (1) and the pump body (2), characterized in that: An exhaust and drainage pipe (23) is fixedly connected to one side of the pump body (2), a filter element (231) is provided inside the exhaust and drainage pipe (23), a quick-release part (24) is provided inside the filter element (231), and a positioning part (25) is provided inside the exhaust and drainage pipe (23); The quick-release component (24) comprises a connecting rod (241) movably sleeved inside the filter element (231), a limiting block (242) fixedly connected to the top of the connecting rod (241) and located at the top of the filter element (231), and a bolt (243) fixedly connected to the bottom of the connecting rod (241) and located at the bottom of the filter element (231).

2. A vacuum pump according to claim 1, characterized in that: The positioning member (25) comprises a fixing plate (251) fixed inside the exhaust and drainage pipe (23), and a positioning block (252) is fixedly connected to the surface of the fixing plate (251).

3. A vacuum pump according to claim 2, characterized in that: The quick-release component (24) further comprises a positioning hole (253) formed on the surface of the fixing plate (251), and the positioning hole (253) is threadedly connected to the bolt (243).

4. A vacuum pump according to claim 3, characterized in that: The positioning member (25) further comprises a groove (254) formed at the bottom of the filter element (231); the groove (254) is located at the top of the positioning block (252) and is adapted thereto; the filter element (231) is located on the surface of the fixing plate (251).

5. A vacuum pump according to claim 4, characterized in that: The output end of the motor (1) is fixedly connected to a pump shaft (26), the pump shaft (26) is located inside the pump body (2), the surface of the pump shaft (26) is movably sleeved with a front pump cover (27), one end of the front pump cover (27) is fixedly connected to a long impeller (28) located on the surface of the pump shaft (26), a short impeller (281) is provided on one side of the long impeller (28) and away from the front pump cover (27), the long impeller (28) and the short impeller (281) are both fixed on the surface of the pump shaft (26), and a rear pump cover (284) is provided on one side of the short impeller (281) and away from the long impeller (28).

6. A vacuum pump according to claim 5, characterized in that: The inner sides of the front pump cover (27), the long impeller (28), the short impeller (281) and the rear pump cover (284) are all provided with a cover disc (282), the cover disc (282) is fixed on the surface of the pump shaft (26), and the surface of the cover disc (282) is provided with an exhaust valve (283).

7. A vacuum pump according to claim 6, characterized in that: An air intake pipe (21) is provided at the top of the front pump cover (27), and a connecting pipe (22) is provided at the top of the front pump cover (27) and the rear pump cover (284).

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