Quickly dismountable vacuum pump

Abstract

The utility model discloses a quick dismounting vacuum pump, including motor, pump body, pivot and impeller, the impeller is installed in the outer periphery of pivot and is located in the pump body, the outer periphery of pivot is equipped with rotor, the rotor is connected with the stator of motor cooperation, motor and pump body between the installation have motor flange, the pivot is set up in the middle part of motor flange and is penetrated, motor flange and pump body fixed connection, be equipped with a plurality of connecting holes on the motor flange, be equipped with the threaded hole corresponding with connecting hole one to one on motor shell, the utility model has the advantage as follows: motor flange, pump body, pivot and impeller install cooperation and become a whole vacuum pump body, therefore only need to take out bolt from threaded hole, and to motor flange is disassembled, can pump body, pivot and impeller are taken off from motor, to last only need to repair or replace motor can.

Description

Technical Field

[0001] This utility model relates to the field of vacuum pump technology, and in particular to a quick-assembly and disassembly vacuum pump. Background Technology

[0002] A vacuum pump is a device or equipment that uses mechanical, physical, chemical, or physicochemical methods to evacuate a container and create a vacuum. In simpler terms, a vacuum pump is a device that uses various methods to generate, improve, and maintain a vacuum in a closed space. A vacuum pump typically consists of a motor, pump body, shaft, and impeller. The impeller is mounted outside the shaft and housed within the pump body. A rotor is mounted on the shaft, and the rotor is connected to the stator inside the motor.

[0003] When a motor is damaged, the pump body, shaft, and impeller must be removed from the motor in sequence before the motor can be repaired or replaced. For example, a vertical liquid ring vacuum pump provided by Chinese invention patent (authorization publication number: CN113898584A) has an impeller installed in the pump body, which is then connected to the motor in sequence via a cover plate and a tray. A base plate is installed at the other end of the pump body. Therefore, during disassembly, the base plate must be removed from the pump body first, then the impeller from the shaft, then the pump body from the cover plate, and finally the tray from the motor. Only after all the above parts are removed can the motor be repaired.

[0004] However, customers often lack professional disassembly and assembly tools, making it difficult for them to disassemble the impeller themselves. In addition, the impeller and shaft require an interference fit during assembly, making disassembly even more difficult. Customers may also damage parts during disassembly, so this shortcoming urgently needs to be addressed. Utility Model Content

[0005] The purpose of this invention is to address the above-mentioned problems. This invention provides a quick-disassembly vacuum pump, which has the advantage of enabling rapid disassembly and maintenance of the motor.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a quick-disassembly vacuum pump, comprising a motor, a pump body, a rotating shaft, and an impeller. The impeller is mounted on the outer periphery of the rotating shaft and located within the pump body. A rotor is provided on the outer periphery of the rotating shaft. The rotor is connected to the stator of the motor. A motor flange is installed between the motor and the pump body. The rotating shaft passes through the middle of the motor flange. The motor flange is fixedly connected to the pump body. The motor flange has several connection holes. The motor housing has threaded holes corresponding to the connection holes. The motor flange is detachably and fixedly connected to the motor by fasteners threadedly engaging with the connection holes and threaded holes.

[0007] Preferably, the motor flange has a plurality of connecting parts, the connecting holes are respectively arranged in the corresponding connecting parts, the connecting parts are provided with connecting grooves, and the fasteners are arranged in the connecting grooves.

[0008] Preferably, the pump body includes a pump cover, a sealing plate, a pump casing, and a connecting seat. The pump casing is installed between the pump cover and the connecting seat. The connecting seat is connected to the motor flange. A compression chamber is formed between the sealing plate, the pump casing, and the connecting seat. The impeller is installed in the compression chamber. The pump cover has an air inlet and an air outlet. The pump cover has a first partition plate that separates the air inlet and the air outlet. The sealing plate has an air inlet hole and an air outlet hole. The sealing plate has a second partition plate that corresponds to and cooperates with the first partition plate. An air inlet chamber and an air outlet chamber are formed between the sealing plate and the pump cover through the first partition plate and the second partition plate. The air inlet chamber is connected to the air inlet. The air outlet chamber is connected to the air outlet. The air inlet chamber is connected to the compression chamber through the air inlet hole. The air outlet chamber is connected to the compression chamber through the air outlet hole and a through hole.

[0009] Preferably, the connecting seat is provided with a boss, the boss is provided with a mounting cavity, a bearing is provided in the mounting cavity, the bearing is installed on the outer periphery of the rotating shaft, and a bushing is also provided on the outer periphery of the rotating shaft, and the bushing is installed on the connecting seat.

[0010] Preferably, a sealing gasket is provided between the pump cover and the sealing plate, and the sealing gasket is provided with a partition piece that corresponds to and cooperates with the first partition plate and the second partition plate.

[0011] Preferably, the connecting seat is provided with a shaft hole, the shaft hole is eccentrically disposed on the connecting seat, and the rotating shaft passes through the shaft hole into the compression chamber.

[0012] Preferably, the connector has several grooves corresponding to the position of the connector, which facilitates the installation and removal of the fastener.

[0013] Preferably, the connecting seat is provided with a through groove that runs through the axial direction.

[0014] Preferably, the pump cover, the sealing plate, and the sealing gasket are each provided with a corresponding water inlet and water outlet, and both the water inlet and the water outlet are connected to the compression chamber from the outside.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] This utility model provides a quick-disassembly vacuum pump. The motor flange, pump body, shaft and impeller are assembled into a whole vacuum pump body. Therefore, it is only necessary to remove the bolts from the threaded holes and disassemble the motor flange to remove the pump body, shaft and impeller from the motor. Finally, only the motor needs to be repaired or replaced, which makes the disassembly and maintenance between the motor and the vacuum pump body more convenient. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0018] Figure 2 This is a cross-sectional three-dimensional structural diagram of the present invention;

[0019] Figure 3 This is a partial cross-sectional structural diagram of the present invention;

[0020] Figure 4 This is a partial three-dimensional structural schematic diagram of the present invention;

[0021] Figure 5 This is a three-dimensional structural diagram of the pump cover of this utility model;

[0022] Figure 6 This is a three-dimensional structural diagram of the sealing plate of this utility model;

[0023] Figure 7 This is a bottom view of the sealing plate of this utility model.

[0024] Figure 8 This is a three-dimensional structural diagram of the sealing gasket of this utility model.

[0025] Figure Descriptions: 1. Motor; 2. Pump Body; 201. Inlet Chamber; 202. Outlet Chamber; 21. Pump Cover; 211. Inlet; 212. Outlet; 213. Water Inlet; 214. Water Outlet; 215. First Partition Plate; 216. First Mounting Base; 217. Mounting Hole; 22. Pump Casing; 220. Compression Chamber; 221. Second Mounting Base; 23. Connecting Base; 230. Through Groove; 231. Boss; 232. Third Mounting Base; 24. Motor 241. Connecting groove; 25. Fastener; 26. Sealing plate; 261. Air inlet; 262. Air outlet; 263. Second partition plate; 264. Through hole; 27. Sealing gasket; 271. Partition plate; 28. Second sealing ring; 29. ​​Double-ended bolt; 291. Nut; 3. Rotating shaft; 31. Shaft sleeve; 32. First sealing ring; 4. Impeller; 51. Fixing bracket; 511. Mounting part; 512. Limiting part; 52. Connecting plate; 521. Elastic plate. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] like Figures 1-8 As shown, a quick-assembly and disassembly vacuum pump includes a motor 1, a pump body 2, a rotating shaft 3, and an impeller 4. The impeller 4 is mounted on the outer periphery of the rotating shaft 3 and located inside the pump body 2. A rotor is provided on the outer periphery of the rotating shaft 3, and the rotor is connected to the stator of the motor 1. A motor flange 24 is installed between the motor 1 and the pump body 2. The rotating shaft 3 passes through the middle of the motor flange 24, and the motor flange 24 is fixedly connected to the pump body 2. The motor flange 24 has a plurality of connection holes, and the motor housing has corresponding connection holes. The motor flange 24 is threaded into the connecting hole and the threaded hole by fastener 25. In this application, the fastener 25 is a bolt, which makes the motor flange 24 detachably fixed to the motor 1. After the motor flange 24, pump body 2, rotating shaft 3 and impeller 4 are installed and fitted together, they become a whole vacuum pump body. Therefore, it is only necessary to remove the bolt from the threaded hole and disassemble the motor flange 24 to remove the pump body 2, rotating shaft 3 and impeller 4 from the motor 1. Finally, only the motor 1 needs to be repaired or replaced.

[0028] The motor flange 24 has several connecting parts, each of which is protruding. The connecting holes are correspondingly arranged in the corresponding connecting parts. The connecting parts are provided with connecting grooves 241. The fasteners 25 are arranged in the connecting grooves 241. The hexagonal heads of the bolts can be arranged in the connecting grooves 241, thereby reducing material usage.

[0029] The connecting seat 23 is provided with a boss 231, the boss 231 is provided with a mounting cavity, the mounting cavity is provided with a bushing 31, and the bushing 31 is provided with a first sealing ring 32 on its outer periphery that seals with the connecting seat 23.

[0030] The pump body 2 includes a pump cover 21, a sealing plate 26, a pump housing 22, and a connecting seat 23. The pump housing 22 is installed between the pump cover 21 and the connecting seat 23. The connecting seat 23 is connected to the motor flange 24. A compression chamber 220 is formed between the sealing plate 26, the pump housing 22, and the connecting seat 23. The impeller 4 is installed in the compression chamber 220. The pump cover 21 is provided with an air inlet 211 and an air outlet 212. The pump cover 21 is provided with a first partition plate 215 separating the air inlet 211 and the air outlet 212. The sealing plate 26 is provided with an air inlet 261 and an air outlet 262. The sealing plate 26 has a second partition plate 263 that corresponds to and cooperates with the first partition plate 215. The sealing plate 26 and the pump cover 21 are connected by the first partition plate 215 and the second partition plate 263 to form an air inlet chamber 201 and an air outlet chamber 202. The air inlet chamber 201 is connected to the air inlet 211, and the air outlet chamber 202 is connected to the air outlet 212. The air inlet chamber 201 is connected to the compression chamber 220 through the air inlet hole 261, and the air outlet chamber 202 is connected to the compression chamber 220 through the air outlet hole 262 and the through hole 264.

[0031] In a further optimized configuration, a fixing frame 51 is mounted on the sealing plate 26, and a connecting plate 52 is provided between the fixing frame 51 and the sealing plate 26. The connecting plate 52 is provided with a plurality of elastic plates 521 corresponding to the positions of the through holes 264. The connecting plate 52 has a mounting part 511 and a limiting part 512. The mounting part 511 and the limiting part 512 are formed by bending the connecting plate 52. The limiting part 512 forms an angle with the sealing plate 26, and the elastic plates 521 can swing between the limiting part 512 and the sealing plate 26.

[0032] When the elastic plate 521 is in contact with the sealing plate 26, the through hole 264 is closed.

[0033] When the air volume is large, the airflow will cause the elastic plate 521 to swing. At this time, the elastic plate 521 and the sealing plate 26 will disengage, so that the gas can be discharged from the through hole 264, thereby increasing the air flow rate.

[0034] A second sealing ring 28 is provided between the sealing plate 26 and the pump housing 22 for sealing cooperation. The second sealing ring 28 is disposed on the outer periphery of the sealing plate 26.

[0035] The connecting seat 23 is provided with a shaft hole, which is eccentrically located on the connecting seat 23. The rotating shaft 3 passes through the shaft hole into the compression chamber 220.

[0036] The connecting seat 23 is provided with a plurality of grooves corresponding to the position of the connecting part, and the grooves facilitate the installation and removal of the fastener 25.

[0037] The connecting seat 23 is provided with a through groove 230 that runs through the axial direction. By setting the through groove 230, the connecting seat 23 can use less material, thus reducing costs.

[0038] The pump cover 21 is provided with a plurality of first mounting seats 216, the pump housing 22 is provided with second mounting seats 221 that correspond to the first mounting seats 216, and the connecting seat 23 is provided with third mounting seats 232 that correspond to the second mounting seats 221. The first mounting seats 216, the second mounting seats 221 and the third mounting seats 232 are all provided with mounting holes 217. The corresponding first mounting seats 216, the second mounting seats 221 and the third mounting seats 232 are connected by double-ended screws passing through the mounting holes 217, and the pump cover 21, the pump housing 22 and the connecting seat 23 are fixedly connected by installing nuts 291 on both ends of the double-ended screws.

[0039] The pump cover 21, the sealing plate 26, and the sealing gasket 27 are all provided with corresponding water inlets 213 and water outlets 214. Both the water inlets 213 and the water outlets 214 are connected to the compression chamber 220 from the outside. During operation, water is poured into the compression chamber 220 through the water inlet 213. When the use is finished, in order to prevent scale from forming on the impeller 4, the water is discharged from the compression chamber 220 through the water outlet 214.

[0040] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0041] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A quick-assembly and disassembly vacuum pump, comprising a motor (1), a pump body (2), a rotating shaft (3), and an impeller (4), wherein the impeller (4) is mounted on the outer periphery of the rotating shaft (3) and located inside the pump body (2), and a rotor is provided on the outer periphery of the rotating shaft (3), the rotor being connected to the stator of the motor (1), characterized in that: A motor flange (24) is installed between the motor (1) and the pump body (2). The rotating shaft (3) passes through the middle of the motor flange (24). The motor flange (24) is fixedly connected to the pump body (2). The motor flange (24) has several connection holes. The motor housing has threaded holes that correspond one-to-one with the connection holes. The motor flange (24) is threadedly engaged with the connection holes and threaded holes by fasteners (25), so that the motor flange (24) and the motor (1) are detachably fixedly connected.

2. The quick-assembly and disassembly vacuum pump according to claim 1, characterized in that: The motor flange (24) has several connecting parts, and the connecting holes are respectively set in the corresponding connecting parts. The connecting parts are provided with connecting grooves (241), and the fasteners (25) are set in the connecting grooves (241).

3. A quick-assembly and disassembly vacuum pump according to claim 2, characterized in that: The pump body (2) includes a pump cover (21), a sealing plate (26), a pump housing (22), and a connecting seat (23). The pump housing (22) is installed between the pump cover (21) and the connecting seat (23). The connecting seat (23) is connected to the motor flange (24). A compression chamber (220) is formed between the sealing plate (26), the pump housing (22), and the connecting seat (23). The impeller (4) is installed in the compression chamber (220). The pump cover (21) is provided with an air inlet (211) and an air outlet (212). The pump cover (21) is provided with a first partition plate (215) that separates the air inlet (211) and the air outlet (212). The sealing plate (26) is provided with an air inlet hole (261). The sealing plate (26) is provided with a second partition plate (263) that corresponds to and cooperates with the first partition plate (215). The sealing plate (26) and the pump cover (21) are connected by the first partition plate (215) and the second partition plate (263) to form an air inlet chamber (201) and an air outlet chamber (202). The air inlet chamber (201) is connected to the air inlet (211), and the air outlet chamber (202) is connected to the air outlet (212). The air inlet chamber (201) is connected to the compression chamber (220) through the air inlet (261), and the air outlet chamber (202) is connected to the compression chamber (220) through the air outlet (262) and the through hole (264).

4. A quick-assembly and disassembly vacuum pump according to claim 3, characterized in that: The connecting seat (23) is provided with a boss (231), the boss (231) is provided with an installation cavity, a bearing is provided in the installation cavity, the bearing is installed on the outer periphery of the rotating shaft (3), and a bushing (31) is also provided on the outer periphery of the rotating shaft (3), the bushing (31) is installed on the connecting seat (23).

5. A quick-assembly and disassembly vacuum pump according to claim 4, characterized in that: A sealing gasket (27) is provided between the pump cover (21) and the sealing plate (26), and a partition piece (271) is provided on the sealing gasket (27) to cooperate with the first partition plate (215) and the second partition plate (263).

6. A quick-assembly and disassembly vacuum pump according to claim 5, characterized in that: The connecting seat (23) is provided with a shaft hole, which is eccentrically located on the connecting seat (23), and the rotating shaft (3) passes through the shaft hole into the compression chamber (220).

7. A quick-assembly and disassembly vacuum pump according to claim 4, characterized in that: The connector (23) has several grooves corresponding to the position of the connector, and the grooves facilitate the installation and removal of the fastener (25).

8. A quick-assembly and disassembly vacuum pump according to claim 4, characterized in that: The connecting seat (23) is provided with a through groove (230) that runs through the axial direction.

9. A quick-assembly and disassembly vacuum pump according to claim 4, characterized in that: The pump cover (21), the sealing plate (26) and the sealing gasket (27) are each provided with a corresponding inlet (213) and outlet (214), and the inlet (213) and outlet (214) are both connected to the compression chamber (220) from the outside.

Images