Vacuum one-way valve body

Abstract

The vacuum one-way valve body comprises a shell main body and a shell upper cover, the shell main body is of a hollow cylindrical structure with an opening in one end, the end, away from the opening, of the shell main body is fixedly connected with an exhaust pipe, one end of the exhaust pipe extends into the shell main body, and a spring and a rubber ball are arranged in the shell main body; one end of the spring is connected to the outer side of the exhaust pipe in a sleeving mode, the other end of the spring abuts against the outer wall of the rubber ball, a sealing ball blocking structure and an SUS filter screen are arranged in the opening end of the shell body, a mounting groove and a connecting groove are formed in the two ends of the shell upper cover correspondingly, and a through hole is formed between the mounting groove and the connecting groove. According to the utility model, through the arrangement of the SUS filter screen, impurities can be blocked and filtered, the problem that the performance of a valve body fails due to blockage caused by the fact that the impurities are sucked into the shell main body in the vacuumizing process is avoided, and the service life is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of valve bodies, in particular to a vacuum one-way valve body. Background Art

[0002] Vacuum one-way valve bodies play a vital role in the field of industrial automation, especially in the application of adsorption platform fixtures. This type of valve body is mainly used to control the flow direction of gas in the vacuum system to ensure that the gas can only flow in one direction, thereby achieving precise adsorption, fixation or transportation operations. At present, the vacuum one-way valve body lacks a filtering structure. During adsorption, the gas flows, which easily sucks in impurities in the air or solid matter on the adsorbed object along with the gas, causing blockage inside the vacuum valve body, resulting in valve body performance failure and reduced service life. Therefore, it is necessary to design a vacuum one-way valve body to improve the above problems. Utility Model Content

[0003] 1. Technical problems to be solved by the utility model

[0004] In response to the shortcomings of the existing technology, the purpose of the present utility model is to provide a vacuum one-way valve body, which aims to solve the problem that the vacuum one-way valve body in the existing technology lacks a filtering structure, which easily sucks impurities in the air or solid matter on the adsorbed object together with the gas, causing blockage inside the vacuum valve body and resulting in failure of the valve body performance.

[0005] 2. Technical solution

[0006] To achieve the above objectives, the present invention provides the following technical solutions:

[0007] A vacuum one-way valve body includes a shell body and a shell cover, the shell body is a hollow cylindrical structure with an open end, the shell body is fixedly connected to an exhaust pipe at the end away from the opening, one end of the exhaust pipe extends to the interior of the shell body, a spring and a rubber ball are provided inside the shell body, one end of the spring is sleeved on the outside of the exhaust pipe, and the other end of the spring rests on the outer wall of the rubber ball, a sealing ball-blocking structure and a SUS filter are provided inside the open end of the shell body, an installation groove and a connecting groove are respectively provided at both ends of the shell cover, a through hole is provided between the installation groove and the connecting groove, and the shell cover is sleeved on the open end of the shell body through the connecting groove.

[0008] Preferably, the sealing ball retaining structure includes a sealing retaining ring, and the inner wall of the sealing retaining ring is adapted to the shape of the rubber ball.

[0009] Preferably, a first mounting groove is provided on the inner wall of the open end of the shell body, and the sealing retaining ring is placed in the first mounting groove. The sealing retaining ball structure also includes a limiting ring, an internal thread is provided on the inner wall of the first mounting groove, and an external thread is provided on the outer wall of the limiting ring. The limiting ring is threadedly connected to the first mounting groove and presses the sealing retaining ring.

[0010] Preferably, a plurality of tool grooves are provided on the limiting ring at equal intervals along the circumferential direction.

[0011] Preferably, a second mounting groove is provided in the first mounting groove near the opening end of the shell body, the SUS filter is placed in the second mounting groove, and an O-ring is installed between the SUS filter and the inner wall of the second mounting groove.

[0012] Preferably, the diameter of the through hole is smaller than the diameter of the SUS filter mesh.

[0013] Preferably, a fixing groove is provided in an annular manner on the outer wall of the shell body, and a plurality of fixing protrusions are fixedly connected to the corresponding fixing grooves on the inner wall of the connecting groove at equal intervals along the circumferential direction. The shell upper cover is stamped and assembled with the shell body so that the fixing protrusions are placed in the fixing grooves.

[0014] 3. Beneficial effects

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] (1) The utility model is provided with a SUS filter to block and filter impurities, thereby preventing impurities from being sucked into the shell body during vacuuming, causing blockage and leading to valve body performance failure, thereby improving service life.

[0017] (2) The utility model is implemented by installing the spring into the shell body, sleeve one end of the spring on the outside of the exhaust pipe, then installing the rubber ball into the shell body to abut against the other end of the spring, then installing the sealing retaining ring into the first installation groove, screwing the limit ring into the first installation groove to press and fix the sealing retaining ring in the first installation groove, then installing the O-ring into the second installation groove, installing the SUS filter into the second installation groove, and finally sleeve the installation groove of the shell cover on the outside of the shell body, and stamping and assembling the shell cover and the shell body so that the fixing protrusion is placed in the fixing groove to complete the assembly. The structure is simple and the assembly is convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 Schematic diagram of the overall three-dimensional structure of the vacuum one-way valve body Figure 1 ;

[0019] Figure 2 Schematic diagram of the overall three-dimensional structure of the vacuum one-way valve body Figure 2 ;

[0020] Figure 3 It is a schematic diagram of the three-dimensional structure of the upper cover of the shell;

[0021] Figure 4 Schematic diagram of the three-dimensional structure of the shell body;

[0022] Figure 5 It is a cross-sectional view of the vacuum one-way valve body;

[0023] Figure 6 This is a cross-sectional view of the shell body.

[0024] In the figure: 1. Shell body; 101. Fixing groove; 102. First mounting groove; 103. Second mounting groove; 2. Shell cover; 201. Mounting groove; 202. Connecting groove; 203. Through hole; 204. Fixing protrusion; 3. Exhaust pipe; 4. Spring; 5. Rubber ball; 6. Sealing ring; 7. Limiting ring; 8. O-ring; 9. SUS filter. DETAILED DESCRIPTION

[0025] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0026] Example:

[0027] See also Figures 1-6, this embodiment provides a vacuum one-way valve body, including a shell body 1 and a shell cover 2. The shell body 1 is a hollow cylindrical structure with an open end. The end of the shell body 1 away from the opening is fixedly connected to an exhaust pipe 3. One end of the exhaust pipe 3 extends to the inside of the shell body 1. A spring 4 and a rubber ball 5 are arranged inside the shell body 1. One end of the spring 4 is sleeved on the outside of the exhaust pipe 3. The spring 4 is limited by the exhaust pipe 3 to prevent the spring 4 from shifting in the shell body 1. The other end of the spring 4 rests on the outer wall of the rubber ball 5. A sealing ball-blocking structure and a SUS filter screen 9 are arranged inside the open end of the shell body 1. An installation groove 201 and a connecting groove 202 are respectively opened at both ends of the shell cover 2. A through hole 203 is provided in the space between the two ends of the housing. The upper cover 2 of the outer shell is sleeved on the open end of the outer shell body 1 through the connecting groove 202. The exhaust pipe 3 is connected to the vacuum air pipe to the external vacuum device. The adsorption platform fixture of the vacuum suction cup type is connected to the mounting groove 201 of the upper cover 2 of the outer shell. When the vacuum is not drawn, the rubber ball 5 is pushed against the sealing ball structure by the force of the spring 4 to close the vacuum one-way valve body. When the vacuum is drawn, a negative pressure airway is generated to absorb the rubber ball 5 away from the sealing ball structure, so that the vacuum one-way valve body is opened, and the impurities are blocked and filtered by the provided SUS filter 9 to avoid the impurities being sucked into the outer shell body 1 during the vacuum process, causing blockage and leading to the problem of valve body performance failure, thereby improving the service life.

[0028] In this embodiment, if Figure 5 and Figure 6 As shown, the sealing ball retaining structure includes a sealing retaining ring 6, the inner wall of which is adapted to the shape of the rubber ball 5, so that the sealing retaining ring 6 can better adapt and seal with the rubber ball 5 for opening and sealing the vacuum one-way valve body.

[0029] In this embodiment, if Figure 5 and Figure 6 As shown, a first mounting groove 102 is provided on the inner wall of the open end of the shell body 1, and the sealing retaining ring 6 is placed in the first mounting groove 102. The sealing retaining ball structure also includes a limiting ring 7. An internal thread is provided on the inner wall of the first mounting groove 102, and an external thread is provided on the outer wall of the limiting ring 7. The limiting ring 7 is threadedly connected to the first mounting groove 102 and presses the sealing retaining ring 6. During assembly, the sealing retaining ring 6 is first installed into the first mounting groove 102, and then the limiting ring 7 is tightened into the first mounting groove 102 to press the sealing retaining ring 6 into the first mounting groove 102, which facilitates the installation and fixation of the sealing retaining ring 6 and facilitates assembly.

[0030] In this embodiment, a plurality of tool grooves are provided on the limiting ring 7 at equal intervals along the circumferential direction. A screwing tool is inserted into the tool groove to facilitate the rotation operation of the limiting ring 7. The screwing tool can be customized.

[0031] In this embodiment, as shown in 5 and Figure 6 As shown, a second mounting groove 103 is provided in the first mounting groove 102 near the open end of the shell body 1, and the SUS filter screen 9 is placed in the second mounting groove 103. An O-ring 8 is installed between the SUS filter screen 9 and the inner wall of the second mounting groove 103. After the sealing ball structure is assembled, the O-ring 8 is installed in the second mounting groove 103, and then the SUS filter screen 9 is installed in the second mounting groove 103, and then the shell cover 2 is assembled, so that the shell cover 2 presses the SUS filter screen 9 in the second mounting groove 103. The O-ring 8 can effectively improve the sealing performance and avoid air leakage.

[0032] In this embodiment, as shown in 3 and Figure 5 As shown, the diameter of the through hole 203 is smaller than the diameter of the SUS filter mesh 9 , so that the entire area ventilated by the through hole 203 can be filtered at the SUS filter mesh 9 .

[0033] In this embodiment, as shown in 1 and Figure 3 As shown, a fixing groove 101 is provided in an annular manner on the outer wall of the shell body 1, and a plurality of fixing protrusions 204 are fixedly connected to the inner wall of the connecting groove 202 at equal intervals along the circumferential direction corresponding to the fixing groove 101. The shell upper cover 2 is stamped and assembled with the shell body 1 so that the fixing protrusions 204 are placed in the fixing groove 101. The structure is simple and the assembly is convenient.

[0034] Working principle: During assembly, first install the spring 4 into the shell body 1, put one end of the spring 4 on the outside of the exhaust pipe 3, then install the rubber ball 5 into the shell body 1 against the other end of the spring 4, then install the sealing ring 6 into the first installation groove 102, tighten the limiting ring 7 into the first installation groove 102 to press the sealing ring 6 into the first installation groove 102, then install the O-ring 8 into the second installation groove 103, install the SUS filter 9 into the second installation groove 103, and finally put the installation groove 201 of the shell cover 2 on the outside of the shell body 1, and stamp the shell cover 2 and the shell body 1 to assemble so that the fixing protrusion 204 is placed in the fixing groove 101 is assembled, with a simple structure and easy assembly. When in use, the exhaust pipe 3 is connected to the vacuum air pipe to the external vacuum device, and the vacuum suction cup-type adsorption platform fixture is connected to the mounting slot 201 of the outer cover 2. When the vacuum is not drawn, the rubber ball 5 is pushed against the sealing ball structure by the force of the spring 4 to close the vacuum one-way valve body. When the vacuum is drawn, a negative pressure airway is generated to adsorb the rubber ball 5 away from the sealing ball structure, so that the vacuum one-way valve body is opened, and the impurities are blocked and filtered by the provided SUS filter 9 to avoid the impurities being sucked into the outer shell body 1 during the vacuum process, causing blockage and leading to the problem of valve body performance failure, thereby improving the service life.

[0035] The above embodiments are preferred implementation schemes of the present invention. In addition, the present invention can also be implemented in other ways. Any obvious replacement without departing from the concept of the present technical solution is within the scope of protection of the present invention.

Claims

1. A vacuum one-way valve body, comprising a housing body (1) and a housing cover (2), characterized in that: The shell body (1) is a hollow cylindrical structure with one end open. The end of the shell body (1) away from the opening is fixedly connected to an exhaust pipe (3). One end of the exhaust pipe (3) extends into the interior of the shell body (1). A spring (4) and a rubber ball (5) are provided inside the shell body (1). One end of the spring (4) is sleeved on the outside of the exhaust pipe (3), and the other end of the spring (4) rests on the outer wall of the rubber ball (5). A sealing ball-blocking structure and a SUS filter (9) are provided inside the open end of the shell body (1). The two ends of the shell cover (2) are respectively provided with a mounting groove (201) and a connecting groove (202). A through hole (203) is provided between the mounting groove (201) and the connecting groove (202). The shell cover (2) is sleeved on the open end of the shell body (1) through the connecting groove (202).

2. A vacuum one-way valve body according to claim 1, characterized in that: The sealing ball retaining structure comprises a sealing retaining ring (6), the inner wall of which is adapted to the shape of the rubber ball (5).

3. A vacuum one-way valve body according to claim 2, characterized in that: A first mounting groove (102) is provided on the inner wall of the open end of the shell body (1), and the sealing retaining ring (6) is placed in the first mounting groove (102). The sealing retaining ball structure also includes a limiting ring (7), and an internal thread is provided on the inner wall of the first mounting groove (102). An external thread is provided on the outer wall of the limiting ring (7). The limiting ring (7) is threadedly connected to the first mounting groove (102) and presses the sealing retaining ring (6).

4. A vacuum one-way valve body according to claim 3, characterized in that: The limiting ring (7) is provided with a plurality of tool grooves at equal intervals along the circumferential direction.

5. The vacuum one-way valve body according to claim 3, characterized in that: A second mounting groove (103) is provided in the first mounting groove (102) near the opening end of the shell body (1); the SUS filter (9) is placed in the second mounting groove (103); and an O-type sealing ring (8) is installed between the SUS filter (9) and the inner wall of the second mounting groove (103).

6. A vacuum one-way valve body according to claim 5, characterized in that: The diameter of the through hole (203) is smaller than the diameter of the SUS filter mesh (9).

7. The vacuum one-way valve body according to claim 1, characterized in that: A fixing groove (101) is provided in an annular manner on the outer wall of the shell body (1); a plurality of fixing protrusions (204) are fixedly connected to the inner wall of the connection groove (202) at positions corresponding to the fixing groove (101) at equal intervals along the circumferential direction; the shell upper cover (2) and the shell body (1) are assembled by stamping so that the fixing protrusions (204) are placed in the fixing groove (101).

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