CN219012828U

CN219012828U - Vacuum diaphragm pump convenient to change seal assembly

Info

Publication number: CN219012828U
Application number: CN202320010179.3U
Authority: CN
Inventors: 桂青云; 刘忠; 桑亚奇
Original assignee: TIANJIN NAVIGATOR LAB INSTRUMENT CO Ltd
Current assignee: TIANJIN NAVIGATOR LAB INSTRUMENT CO Ltd
Priority date: 2023-01-04
Filing date: 2023-01-04
Publication date: 2023-05-12
Anticipated expiration: 2033-01-04

Abstract

The utility model discloses a vacuum diaphragm pump convenient for replacing a sealing component, which comprises a base, wherein a connecting pipe is fixedly arranged at the top of the base, first diaphragm chamber shells are fixedly arranged at two sides of the inner side of the connecting pipe, first connecting components are arranged at one sides of the two first diaphragm chamber shells, which are close to each other, second diaphragm chamber shells are arranged at one sides of the two first connecting components, which are close to each other, second connecting components are arranged at one sides of the two second diaphragm chamber shells, which are close to each other, an intermediate body is arranged at one side of the two second connecting components, the vacuum diaphragm pump convenient for replacing the sealing component is characterized in that the traditional integrated intermediate body is divided into the second diaphragm chamber shells and the intermediate body, and the second diaphragm chamber shells and the intermediate body are connected and installed through the second connecting components, so that when the sealing component in the diaphragm pump is disassembled, the two diaphragm chambers of the diaphragm pump are not required to be completely disassembled, and the sealing component in the diaphragm pump is convenient for practical use.

Description

Vacuum diaphragm pump convenient to change seal assembly

Technical Field

The utility model relates to the technical field of auxiliary equipment of vacuum diaphragm pumps, in particular to a vacuum diaphragm pump with a sealing component convenient to replace.

Background

The vacuum diaphragm pump is a small instrument which is provided with an extraction opening and an exhaust opening, forms a certain negative pressure at the extraction opening through the reciprocating motion of an internal diaphragm, forms weak positive pressure at the exhaust opening, and mainly adopts a gas as a working medium, and is used for pumping the gas, and the basic principle of the vacuum diaphragm pump is as follows: the circular motion of the motor drives the diaphragm inside the pump to do reciprocating motion through the eccentric motion of the mechanical device, thereby compressing the air in the pump cavity with fixed volume (positive pressure is formed at the exhaust port when compressing, the exhaust port is closed), stretching (negative pressure is formed at the exhaust port when stretching, the exhaust port is closed), generating pressure difference with the external atmospheric pressure at the exhaust port of the pump, sucking the air pressure into the pump cavity under the action of the pressure difference, and then discharging the air from the exhaust port.

The sealing component of the existing vacuum diaphragm pump is arranged in the diaphragm chamber of the vacuum diaphragm pump, the existing vacuum diaphragm pump is generally provided with two vacuum diaphragm chambers, the two diaphragm chambers are connected through an intermediate body, when the sealing component in the diaphragm chamber is to be replaced, the diaphragm chambers can be opened only by removing the connecting parts of the two diaphragm chambers and the intermediate body, and when only the sealing component in one diaphragm chamber is required to be replaced, the disassembling operation is complicated, and certain defects exist.

Disclosure of Invention

The utility model provides a vacuum diaphragm pump convenient for replacing a sealing component, which comprises a base, wherein a connecting pipe is fixedly arranged at the top of the base, first diaphragm chamber shells are fixedly arranged at two sides of the inner side of the connecting pipe, first connecting components are arranged at one sides of the two first diaphragm chamber shells, which are close to each other, second diaphragm chamber shells are arranged at one sides of the two first connecting components, which are close to each other, second connecting components are arranged at one sides of the two second diaphragm chamber shells, which are close to each other, and an intermediate body is arranged at one side of the two second connecting components, which is close to each other;

the second coupling assembling includes first spacing collar, stopper and first sealing washer, one side of first spacing collar and one side fixed connection that first diaphragm chamber casing was kept away from to the second diaphragm chamber casing, the opposite side inner wall of first spacing collar and the outer wall threaded connection of midbody, the stopper is equipped with two, two stoppers are all fixed to be established in the spacing collar one side that is close to the midbody, the fixed cover of first sealing washer is established at the outer wall of midbody.

Preferably, the inner wall of the first limit ring and the outer wall of the intermediate body are respectively provided with a first thread and a second thread which are matched with each other, and the first sealing ring is positioned on one side of the second thread close to the limit ring.

Preferably, the inner wall of first spacing collar and the outer wall looks adaptation of midbody, two the one side that the stopper is close to each other is the arc design, and the equal threaded connection of one side that two stoppers kept away from each other has the first bolt that extends to in the midbody.

Preferably, the first connecting component comprises a first flange, a second limit ring, a limit groove and a second seal ring, wherein one sides of the first flange and the second flange, which are far away from each other, are respectively fixedly arranged on one sides of the first diaphragm chamber shell and the second diaphragm chamber shell, which are close to each other, the second limit ring is fixedly arranged on one side of the second flange, which is close to the first flange, and the limit groove is formed on one side of the first flange, which is close to the second flange.

Preferably, two second sealing rings are arranged, the two second sealing rings are horizontally and fixedly sleeved on the inner wall of the second limiting ring, and the side wall of the second limiting ring is matched with the inner wall of the limiting groove.

Preferably, the side of the first flange plate, which is close to the second flange plate, is connected through a second bolt, and the second bolt is located at the outer side of the second limit ring.

Compared with the prior art, the technical scheme provided by the utility model has the following beneficial technical effects:

in summary, the device divides the traditional integral type midbody into the second diaphragm chamber shell and the midbody, and connects and installs the second diaphragm chamber shell and the midbody through the second coupling assembling to make when dismantling the seal assembly in the diaphragm pump, need not all unpack apart two diaphragm chambers of diaphragm pump, and then be convenient for change the seal assembly in the diaphragm pump, be convenient for in-service use.

Drawings

Fig. 1 is a schematic view of the overall structure of a vacuum diaphragm pump according to the present utility model, in which a seal assembly is easily replaced.

Fig. 2 is a schematic diagram of the overall exploded front view of a vacuum diaphragm pump with a seal assembly for easy replacement according to the present utility model.

Fig. 3 is a schematic view of an overall exploded rear view of a vacuum diaphragm pump with a seal assembly for easy replacement according to the present utility model.

Fig. 4 is an enlarged schematic view of the vacuum diaphragm pump a of fig. 2 for facilitating replacement of the seal assembly according to the present utility model.

Fig. 5 is an enlarged schematic view of the structure B in fig. 2 of a vacuum diaphragm pump for facilitating replacement of a seal assembly according to the present utility model.

Reference numerals; 1. a base; 2. a connecting pipe; 3. a first connection assembly; 301. a second limit ring; 302. a second flange; 303. a second seal ring; 304. a first flange; 305. a limit groove; 4. a second diaphragm chamber housing; 5. an intermediate; 6. a second connection assembly; 601. a limiting block; 602. a first seal ring; 603. a first limit ring; 7. a first diaphragm chamber housing.

Detailed Description

The objects, technical solutions and advantages of the present utility model will become more apparent by the following detailed description of the present utility model with reference to the accompanying drawings. It should be understood that the description is only illustrative and is not intended to limit the scope of the utility model. In addition, in the following description, descriptions of well-known structures and techniques are omitted so as not to unnecessarily obscure the present utility model.

As shown in fig. 1, the vacuum diaphragm pump convenient for replacing the seal assembly provided by the utility model comprises a base 1, wherein a connecting pipe 2 is fixedly arranged at the top of the base 1, first diaphragm chamber shells 7 are fixedly arranged at two sides of the inner side of the connecting pipe 2, first connecting assemblies 3 are arranged at one sides of the two first diaphragm chamber shells 7, which are close to each other, the first diaphragm chamber shells 7 and the second diaphragm chamber shells 4 are conveniently detached through the first connecting assemblies 3, second diaphragm chamber shells 4 are arranged at one sides of the two first connecting assemblies 3, second connecting assemblies 6 are arranged at one sides of the two second diaphragm chamber shells 4, which are close to each other, and the second diaphragm chamber shells 4 and an intermediate body 5 are connected and installed through the second connecting assemblies 6, so that when the seal assembly in the diaphragm pump is detached, the two diaphragm chambers of the diaphragm pump are not required to be completely detached, the seal assembly in the diaphragm pump is conveniently replaced, and the intermediate body 5 is conveniently used in actual use.

As shown in fig. 2, 3 and 4, the second connecting component 6 includes a first stop collar 603, a stop block 601 and a first sealing ring 602, one side of the first stop collar 603 is fixedly connected with one side of the second diaphragm chamber housing 4 away from the first diaphragm chamber housing 7, the inner wall of the other side of the first stop collar 603 is in threaded connection with the outer wall of the intermediate body 5, two stop blocks 601 are fixedly arranged on one side of the stop collar close to the intermediate body 5, the first sealing ring 602 is fixedly sleeved on the outer wall of the intermediate body 5, a first bolt is rotated by a wrench or other tool, so that the first bolt is separated from the stop block 601, then the second diaphragm chamber housing 4 is unscrewed, the second diaphragm chamber housing 4 is separated from the intermediate body 5, and the operation is convenient, so that the tightness between the second diaphragm chamber housing 4 and the intermediate body 5 is improved through the first sealing ring 602.

Further, first screw thread and second screw thread of looks adaptation have been seted up respectively to the inner wall of first spacing collar 603 and the outer wall of midbody 5, first sealing washer 602 is located one side that the second screw thread is close to the spacing collar, through first screw thread and second screw thread convenient to detach second diaphragm room and midbody 5, the inner wall of first spacing collar 603 and the outer wall looks adaptation of midbody 5, guarantee that first sealing washer 602 is hugged closely with the inside wall of first spacing collar 603, thereby guarantee the leakproofness of first sealing washer 602, the in-service use of being convenient for, one side that two stoppers 601 are close to each other is the arc design, the equal threaded connection of one side that two stoppers 601 keep away from each other has the first bolt that extends to midbody 5, guarantee the tightness of midbody 5 and second diaphragm room casing 4 connection through first bolt.

As shown in fig. 2, 3 and 5, the first connecting assembly 3 includes a first flange 304, a second flange 302, a second stop collar 301, a stop groove 305 and a second seal ring 303, wherein, one sides of the first flange 304 and the second flange 302, which are far away from each other, are respectively fixedly arranged on one sides of the first diaphragm chamber housing 7 and the second diaphragm chamber housing 4, which are close to each other, the second stop collar 301 is fixedly arranged on one side of the second flange 302, which is close to the first flange 304, the stop groove 305 is arranged on one side of the first flange 304, which is close to the second flange 302, and the second bolt is unscrewed by rotating a tool such as a wrench, so that the first diaphragm chamber housing 7 and the second diaphragm chamber housing 4 are detached.

Further, two second sealing rings 303 are arranged, the two second sealing rings 303 are horizontally and fixedly sleeved on the inner wall of the second limiting ring 301, the side wall of the second limiting ring 301 is matched with the inner wall of the limiting groove 305, the tightness of connection between the first flange plate 304 and the second flange plate 302 is guaranteed through the second sealing rings 303, the tightness of connection between the first diaphragm chamber shell 7 and the second diaphragm chamber shell 4 is guaranteed, one side, close to each other, of the first flange plate 304 and the second flange plate 302 is connected through a second bolt, the second bolt is located on the outer side of the second limiting ring 301, and the first flange plate 304 and the second flange plate 302 are conveniently connected and fixed through the second bolt.

In the utility model, the traditional integrated intermediate 5 is divided into the second diaphragm chamber shell 4 and the intermediate 5, and the second diaphragm chamber shell 4 and the intermediate 5 are connected and installed through the second connecting component 6, so that when the sealing component in the diaphragm pump is disassembled, the two diaphragm chambers of the diaphragm pump are not required to be completely disassembled, and the sealing component in the diaphragm pump is convenient to replace, and the diaphragm pump is convenient to use in practice.

During specific operation, the first diaphragm chamber shell 7 and the second diaphragm chamber shell 4 are detached through the first connecting component 3, when the first connecting component 3 is operated, the second bolt is unscrewed through tool rotation such as a wrench, so that the first diaphragm chamber shell 7 and the second diaphragm chamber shell 4 are detached, then the second diaphragm chamber shell 4 and the intermediate body 5 are detached through the second connecting component 6, the sealing component is convenient to detach and take out, when the second connecting component 6 is operated, the first bolt is rotated through tool rotation such as a wrench, so that the first bolt is separated from the limiting block 601, then the second diaphragm chamber shell 4 is unscrewed, and further the second diaphragm chamber shell 4 is separated from the intermediate body 5, so that the operation is convenient.

It is to be understood that the above-described embodiments of the present utility model are merely illustrative of or explanation of the principles of the present utility model and are in no way limiting of the utility model. Accordingly, any modification, equivalent replacement, improvement, etc. made without departing from the spirit and scope of the present utility model should be included in the scope of the present utility model. Furthermore, the appended claims are intended to cover all such changes and modifications that fall within the scope and boundary of the appended claims, or equivalents of such scope and boundary.

Claims

1. The utility model provides a vacuum diaphragm pump convenient to change seal assembly, includes base (1), a serial communication port, the top of base (1) is fixed and is equipped with connecting pipe (2), the inboard both sides of connecting pipe (2) are all fixed and are equipped with first diaphragm room casing (7), one side that two first diaphragm room casings (7) are close to each other all is provided with first coupling assembling (3), one side that two first coupling assembling (3) are close to each other all is provided with second diaphragm room casing (4), one side that two second diaphragm room casings (4) are close to each other all is provided with second coupling assembling (6), one side that two second coupling assembling (6) are close to each other is provided with midbody (5);

the second coupling assembling (6) include first spacing collar (603), stopper (601) and first sealing washer (602), one side of first spacing collar (603) and one side fixed connection that first diaphragm chamber casing (7) were kept away from to second diaphragm chamber casing (4), the opposite side inner wall of first spacing collar (603) and the outer wall threaded connection of midbody (5), stopper (601) are equipped with two, two stopper (601) are all fixed to be established in one side that the spacing collar is close to midbody (5), the outer wall at midbody (5) is established to fixed cover of first sealing washer (602).

2. The vacuum diaphragm pump with the seal assembly convenient to replace according to claim 1, wherein the inner wall of the first limit ring (603) and the outer wall of the intermediate body (5) are respectively provided with a first thread and a second thread which are matched, and the first seal ring (602) is located on one side of the second thread close to the limit ring.

3. The vacuum diaphragm pump with the sealing assembly convenient to replace according to claim 1, wherein the inner wall of the first limiting ring (603) is matched with the outer wall of the intermediate body (5), one sides of the two limiting blocks (601) close to each other are arc-shaped, and one sides of the two limiting blocks (601) far away from each other are in threaded connection with first bolts extending into the intermediate body (5).

4. The vacuum diaphragm pump with the seal assembly convenient to replace according to claim 1, wherein the first connecting assembly (3) comprises a first flange plate (304), a second flange plate (302), a second limit ring (301), a limit groove (305) and a second seal ring (303), one sides of the first flange plate (304) and the second flange plate (302) which are far away from each other are respectively fixedly arranged on one sides of the first diaphragm chamber shell (7) and the second diaphragm chamber shell (4) which are close to each other, the second limit ring (301) is fixedly arranged on one side of the second flange plate (302) which is close to the first flange plate (304), and the limit groove (305) is formed on one side of the first flange plate (304) which is close to the second flange plate (302).

5. The vacuum diaphragm pump with the seal assembly convenient to replace according to claim 4, wherein two second sealing rings (303) are arranged, the two second sealing rings (303) are horizontally fixedly sleeved on the inner wall of the second limit ring (301), and the side wall of the second limit ring (301) is matched with the inner wall of the limit groove (305).

6. A vacuum diaphragm pump facilitating replacement of a seal assembly according to claim 4, wherein the side of the first flange plate (304) and the side of the second flange plate (302) which are close to each other are connected by a second bolt, and the second bolt is located outside the second stop collar (301).