CN219159614U - Special check valve mechanism for vacuum pump - Google Patents

Abstract

The utility model discloses a special one-way valve mechanism for a vacuum pump, which comprises a connecting valve body, wherein a connecting valve cover is movably arranged on the right side of the connecting valve body, a valve block mechanism is arranged in an inner cavity of the connecting valve cover, a guide block is fixedly connected to the inner cavity of the connecting valve body, a mounting pipe is communicated with the left side of the connecting valve body, and a connecting pipe is communicated with the right side of the connecting valve cover. According to the utility model, the check valve can be tightly installed through the cooperation of the installation pipe, the connecting pipe, the pump body installation pipe, the first thread bush, the sealing gasket and the connecting cover, so that the tightness of the check valve can be ensured during use, the check valve can still be normally used after long-time use, and the air flow can be filtered through the cooperation of the second thread bush, the filtering frame, the installation plate, the positioning rod and the positioning bush, so that the fact that the debris impurities are doped in the air flow can be prevented, and the operation of the air inlet equipment caused by the debris impurities is prevented.

Description

One-way valve mechanism for vacuum pump

technical field

The utility model relates to the technical field of vacuum pumps, in particular to a special one-way valve mechanism for vacuum pumps.

Background technique

A vacuum pump refers to a device or device that uses mechanical, physical, chemical or physicochemical methods to pump air into a pumped container to obtain a vacuum. Generally speaking, a vacuum pump uses various methods to improve, generate and maintain a vacuum in a closed space. Vacuum device, according to the working principle of the vacuum pump, the vacuum pump can be basically divided into two types, namely the gas capture pump and the gas transmission pump, which are widely used in metallurgy, chemical industry, food, electronic coating and other industries. When the vacuum pump is used, it will Use to one-way valve mechanism for material transfer.

The invention patent of the patent application publication number CN213831656U discloses a new type of special one-way valve for mechanical vacuum pumps, which includes a lower half shell, the inner side of the lower half shell is connected with a snap ring, and the lower half shell is connected with the upper half shell through the plastic welding of the snap ring. An air outlet joint is connected to the end of the lower half shell away from the upper half shell, and an air intake joint is connected to the end of the upper half shell away from the lower half shell. Bamboo barbs are arranged on the outer surfaces of the air intake joint and the air outlet joint. The inner side of the half shell is dug with a spring mounting groove, and a spring mounting rib is connected in the spring mounting groove. There are six spring mounting ribs, and a spring is installed between the spring mounting rib outside and the spring mounting groove, which can realize both It meets the vacuum requirements of the vacuum booster system, and can be used for the one-way connection between the mechanical vacuum pump and the vacuum booster, which reduces the cost and increases the safety.

However, the above-mentioned device still has some disadvantages in actual use. The more obvious one is that it generally does not have the function of filtering the airflow during use, and it is easy to cause impurities or debris to be mixed in it when the airflow is transmitted. If it is not dealt with, it may cause the failure of the air intake equipment, and when installing the check valve, it is usually only installed with bolts tightened, which will easily lead to leakage after long-term use.

Therefore, it is necessary to invent a special one-way valve mechanism for vacuum pumps to solve the above problems.

Utility model content

The purpose of the utility model is to provide a special one-way valve mechanism for vacuum pumps, which has the function of being able to filter the airflow and the advantages of good sealing performance, and solves the problem that the one-way valve mechanism generally does not have the ability to filter the airflow when it is used. The function and when installing the check valve, it is usually only a matter of bolt tightening installation.

In order to achieve the above purpose, the utility model provides the following technical solutions: a special one-way valve mechanism for vacuum pumps, including a connecting valve body, the right side of the connecting valve body is movably provided with a connecting valve cover, and the inner cavity of the connecting valve cover A valve block mechanism is provided, the inner cavity of the connecting valve body is fixedly connected with a guide block, the left side of the connecting valve body is communicated with an installation pipe, the right side of the connecting valve cover is communicated with a connecting pipe, and the installation pipe A connecting mechanism is arranged on the surface of the connecting pipe, a filtering mechanism is arranged on the right side of the connecting pipe, a second threaded sleeve is installed on the left side of the connecting valve body through a bearing, and a threaded rod is fixedly connected on the left side of the connecting valve cover.

Preferably, the valve block mechanism includes a mounting frame, the right side of the mounting frame is fixedly connected to the inner wall connecting the bonnet, the inner cavity of the mounting frame is welded with a spring, and the surface of the mounting frame is movably sleeved with a valve. block, the left side of the spring is welded with a valve stem, and the left side of the valve stem penetrates to the outside of the mounting frame and is welded with the valve block.

Preferably, the connection mechanism includes a pump body installation pipe, and the pump body installation pipe is threaded on the surface of the installation pipe. The right side of the pump body installation pipe is welded with a first threaded sleeve, and the first threaded sleeve The inner cavity of the valve body is fixedly connected with a sealing gasket, the surface of the connecting valve body is installed with a connecting cover through a bearing, and the connection between the surface of the first threaded sleeve and the inner wall of the connecting cover is threaded.

Preferably, the filter mechanism includes a connecting plate, the left side of the connecting plate is fixedly connected with the connecting pipe, the left side of the connecting plate is fixedly connected with a positioning sleeve, and the inner cavity of the connecting pipe is movably provided with a filter frame, The inner cavity of the connecting plate is movably provided with a mounting plate, the side of the mounting plate close to the filter frame is welded with the filter frame, and the left side of the mounting plate is welded with a positioning rod.

Preferably, the joint between the surface of the threaded rod and the inner wall of the second threaded sleeve is threaded, and a vent hole is opened on the right side of the connecting valve cover.

Compared with the prior art, the beneficial effects of the utility model are as follows:

1. The utility model can tightly install the one-way valve through the cooperation of the installation pipe, the connecting pipe, the pump body installation pipe, the first threaded sleeve, the sealing gasket and the connecting cover, so that the safety of the one-way valve can be ensured during use. The tightness makes it possible to use normally after a long time of use.

2. The utility model can filter the airflow through the cooperation of the second threaded sleeve, the filter frame, the mounting plate, the positioning rod and the positioning sleeve, so as to prevent debris and impurities from being mixed in it, so as to prevent these debris and impurities from affecting the airflow. The operation of the intake device brings about operation.

Description of drawings

Fig. 1 is a schematic sectional view of the structure of the utility model;

Fig. 2 is a schematic diagram of a cross-sectional exploded view of the valve block mechanism of the present invention;

Fig. 3 is a cross-sectional exploded schematic diagram of the connection mechanism of the present invention;

Fig. 4 is a cross-sectional exploded schematic view of the filter mechanism of the present invention;

Fig. 5 is a schematic front view of the structure of the utility model.

In the figure: 1 connecting valve body, 2 connecting bonnet, 3 guiding block, 4 valve block mechanism, 5 connecting mechanism, 6 installing pipe, 7 connecting pipe, 8 filtering mechanism, 9 installing frame, 10 spring, 11 valve block, 12 Valve stem, 13 pump body mounting pipe, 14 first threaded sleeve, 15 gasket, 16 connecting cover, 17 second threaded sleeve, 18 threaded rod, 19 connecting plate, 20 filter frame, 21 mounting plate, 22 positioning rod, 23 Positioning sets.

Detailed ways

Please refer to Figure 1-Figure 5, a special one-way valve mechanism for vacuum pumps, including a connecting valve body 1, a connecting valve cover 2 is movable on the right side of the connecting valve body 1, and a valve block mechanism is provided in the inner cavity of the connecting valve cover 2 4. The inner cavity of the connecting valve body 1 is fixedly connected with the guide block 3, the left side of the connecting valve body 1 is connected with the installation pipe 6, and the right side of the valve cover 2 is connected with the connecting pipe 7, and the surface of the installation pipe 6 is provided with a connecting pipe 6. Mechanism 5, the right side of the connecting pipe 7 is provided with a filter mechanism 8, the left side of the connecting valve body 1 is equipped with a second threaded sleeve 17 through a bearing, and the left side of the connecting valve cover 2 is fixedly connected with a threaded rod 18, and by setting the guide block 3. The air flow can be guided so that the valve block 11 can be used. Through the cooperation of the threaded rod 18 and the connecting plate 19, it is convenient to connect the valve body 1 and the connecting valve cover 2, and it is also convenient for later disassembly and maintenance.

The valve block mechanism 4 includes a mounting frame 9, the right side of the mounting frame 9 is fixedly connected to the inner wall connecting the bonnet 2, the inner cavity of the mounting frame 9 is welded with a spring 10, and the surface of the mounting frame 9 is movably sleeved with a valve block 11, the spring A valve stem 12 is welded on the left side of 10 , and the left side of the valve stem 12 penetrates to the outside of the mounting frame 9 and is welded to the valve block 11 .

The connecting mechanism 5 includes a pump body installation pipe 13, the pump body installation pipe 13 is threaded on the surface of the installation pipe 6, the right side of the pump body installation pipe 13 is welded with a first threaded sleeve 14, and the inner cavity of the first threaded sleeve 14 is fixed A sealing gasket 15 is connected, and a connecting cover 16 is installed on the surface of the connecting valve body 1 through a bearing. The joint between the surface of the first threaded sleeve 14 and the inner wall of the connecting cover 16 is threaded. The sleeve 14 cooperates to increase the tightness of the one-way valve to prevent leakage after a long time of use.

Filtration mechanism 8 comprises connecting plate 19, and the left side of connecting plate 19 is fixedly connected with connecting pipe 7, and the left side of connecting plate 19 is fixedly connected with positioning sleeve 23, and the inner cavity of connecting pipe 7 is provided with filter frame 20, connecting plate 19 A mounting plate 21 is installed in the inner cavity of the mounting plate 21. The side of the mounting plate 21 close to the filter frame 20 is welded to the filter frame 20. The left side of the mounting plate 21 is welded with a positioning rod 22. By setting the mounting plate 21, the filter frame 20 can be installed When it is limited, in case the filter frame 20 shakes in the connecting pipe 7.

The joint between the surface of the threaded rod 18 and the inner wall of the second threaded sleeve 17 is threaded, and the right side connecting the valve cover 2 is provided with a vent hole.

When in use, the user first installs the one-way valve, and the user screws the installation pipe 6 into the pump body installation pipe 13 through a threaded connection. When the installation pipe 6 enters the pump body installation pipe 13, the first threaded sleeve 14 enters the connection. In the cover 16, the user then rotates the connecting cover 16, so that the connecting cover 16 can be tightly connected with the first threaded sleeve 14 through threaded connection, so as to cooperate with the sealing gasket 15 to increase the sealing performance of the one-way valve. After completion, The user installs the filter frame 20 again. The user installs the installation plate 21 into the connection plate 19 through the filter frame 20. When the installation plate 21 enters the connection plate 19, the installation plate 21 drives the positioning rod 22 to insert into the positioning sleeve 23 , so that the positioning sleeve 23 can limit the positioning rod 22, so as to limit the filter frame 20, so as to prevent the filter frame 20 from falling off from the connecting pipe 7, and then the user connects the air outlet end of the connecting pipe 7 with the air inlet The air intake end of the equipment is connected. When the vacuum pump is in use, the vacuum pump guides the airflow into the installation pipe 6 through the pump body installation pipe 13, and then the installation pipe 6 guides the airflow into the connecting valve body 1. After the airflow enters the connecting valve body 1, the valve The block 11 is displaced by the thrust of the air flow, so that the air flow can enter the connecting valve cover 2, and then the connecting valve cover 2 guides the air flow into the air intake device through the connecting pipe 7 for use. When the air flow enters the air intake device, The filter frame 20 filters the airflow to prevent debris and impurities from being doped therein.

To sum up: the one-way valve mechanism dedicated to the vacuum pump passes through the installation pipe 6, the connection pipe 7, the pump body installation pipe 13, the first threaded sleeve 14, the gasket 15, the connection cover 16, the second threaded sleeve 17, and the filter frame. 20. The cooperative use of the mounting plate 21, the positioning rod 22 and the positioning sleeve 23 solves the problem that the one-way valve mechanism generally does not have the function of filtering the air flow when it is used and that usually only bolts are used to install the one-way valve. Tighten the problem of the installation method.

Claims (5)

1. The utility model provides a special check valve mechanism of vacuum pump, includes connection valve body (1), its characterized in that: the right side activity of connecting valve body (1) is provided with and connects valve gap (2), the inner chamber of connecting valve gap (2) is provided with valve piece mechanism (4), the inner chamber fixedly connected with guide block (3) of connecting valve body (1), the left side intercommunication of connecting valve body (1) has install tube (6), the right side intercommunication of connecting valve gap (2) has connecting pipe (7), the surface of installing tube (6) is provided with coupling mechanism (5), the right side of connecting pipe (7) is provided with filtering mechanism (8), the left side of connecting valve body (1) is installed second thread bush (17) through the bearing, the left side fixedly connected with threaded rod (18) of connecting valve gap (2).

2. The unidirectional valve mechanism for a vacuum pump of claim 1, wherein: the valve block mechanism (4) comprises a mounting frame (9), the right side of the mounting frame (9) is fixedly connected with the inner wall of the connecting valve cover (2), a spring (10) is welded in an inner cavity of the mounting frame (9), a valve block (11) is movably sleeved on the surface of the mounting frame (9), a valve rod (12) is welded on the left side of the spring (10), and the left side of the valve rod (12) penetrates through the outer side of the mounting frame (9) and is welded with the valve block (11).

3. The unidirectional valve mechanism for a vacuum pump of claim 1, wherein: coupling mechanism (5) are including pump body installation pipe (13), the surface of installation pipe (6) is located to pump body installation pipe (13) thread bush, the right side welding of pump body installation pipe (13) has first thread bush (14), the inner chamber fixedly connected with of first thread bush (14) is sealed to be filled up (15), connecting cover (16) are installed through the bearing on the surface of connecting valve body (1), the junction of the surface of first thread bush (14) and connecting cover (16) inner wall is threaded connection.

4. The unidirectional valve mechanism for a vacuum pump of claim 1, wherein: the filtering mechanism (8) comprises a connecting plate (19), the left side of the connecting plate (19) is fixedly connected with a connecting pipe (7), a locating sleeve (23) is fixedly connected to the left side of the connecting plate (19), a filtering frame (20) is movably arranged in an inner cavity of the connecting pipe (7), a mounting plate (21) is movably arranged in the inner cavity of the connecting plate (19), one side, close to the filtering frame (20), of the mounting plate (21) is welded with the filtering frame (20), and a locating rod (22) is welded to the left side of the mounting plate (21).

5. The unidirectional valve mechanism for a vacuum pump of claim 1, wherein: the surface of the threaded rod (18) is in threaded connection with the connecting part of the inner wall of the second threaded sleeve (17), and the right side of the connecting valve cover (2) is provided with a vent hole.

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