CN212928878U

CN212928878U - Automatic check valve

Info

Publication number: CN212928878U
Application number: CN202021958745.6U
Authority: CN
Inventors: 秦振宇
Original assignee: Suzhou Fuluoweite Automation Equipment Co ltd
Current assignee: Suzhou Fuluoweite Automation Equipment Co ltd
Priority date: 2020-09-09
Filing date: 2020-09-09
Publication date: 2021-04-09
Anticipated expiration: 2030-09-09

Abstract

The utility model provides an automatic check valve, which comprises a valve body, fixedly connected with adjustment connector in the middle of the valve body top, bolt fixedly connected with seal cap is passed through at adjustment connector top, valve body both ends fixedly connected with locating flange dish, valve body one end fixedly connected with medium contact tube, valve body other end fixedly connected with medium induction tube, the inside mobile through-hole that has seted up of medium induction tube, the inside mobile through-hole pore wall fixedly connected with first sealed connector of valve body and medium induction tube junction, the one end contact that the valve body was kept away from to first sealed connector is connected with first valve clack. The utility model discloses a cooperation of first valve clack and first sealed connector, the cooperation of second valve clack and the sealed connector of second sets up sealed limit and seal groove at second valve clack and the sealed connector junction of second and carries out sealing connection, cuts off through the twice, cuts off medium fluid, prevents the medium backward flow.

Description

Automatic check valve

Technical Field

The utility model mainly relates to an automatic check valve's technical field, concretely relates to automatic check valve.

Background

The check valve is a valve with a circular valve clack and acts by self weight and medium pressure to block the medium from flowing backwards. It belongs to the automatic valve category, also called check valve, reflux valve or isolation valve. The valve clack motion mode is divided into lifting type and swing type.

The phenomenon that a small amount of media are guided due to the fact that sealing is not tight often occurs in the use process of an existing check valve, the existing check valve is large in resistance, poor in sealing performance when closed due to the defect, and the media are guided in the use process of the existing check valve to a large extent. Therefore, it is an important point to improve the sealing performance of the check valve flap and to reduce the amount of medium backflow.

SUMMERY OF THE UTILITY MODEL

The utility model mainly provides an automatic check valve for solve the technical problem who proposes among the above-mentioned background art.

The utility model provides a technical scheme that above-mentioned technical problem adopted does:

an automatic check valve comprises a valve body, wherein an adjusting connector is fixedly connected in the middle of the top of the valve body, the top of the adjusting connector is fixedly connected with a sealing top cover through a connecting bolt, two ends of the valve body are fixedly connected with positioning flange plates, one end of the valve body is fixedly connected with a medium outlet pipe, the other end of the valve body is fixedly connected with a medium inlet pipe, a flow through hole is arranged in the medium outlet pipe, a first sealing connector is fixedly connected with the wall of the flow through hole in the connecting part of the valve body and the medium outlet pipe, one end of the first sealing connector, which is far away from the valve body, is in contact connection with a first valve clack, a connecting rod is fixedly connected in the middle of the end, which is close to the first sealing connector, of the connecting rod is in sliding connection, the connecting sleeve is close to both ends fixedly connected with reset spring about one side inner wall of first valve clack, two reset spring keeps away from the one end fixedly connected with location go-between of first valve clack, the one end fixedly connected with second valve clack that first valve clack was kept away from to the connecting rod, the one end fixedly connected with sealing edge that the connecting rod was kept away from to the second valve clack, the one end sealing contact that the second valve clack was kept away from to the sealing edge has the sealed connector of second.

A through groove is formed in the middle of the top of the adjusting connector and penetrates through the adjusting connector and the valve wall on the upper portion of the valve body, and four fixing supports are fixedly connected to the wall of the flowing through hole in the inner wall of the valve body.

The positioning connecting ring is slidably mounted inside the connecting sleeve, sliding grooves are formed in four sides of the connecting sleeve, and the four fixing supports are slidably mounted in the sliding grooves.

The flowing through hole penetrates through the medium delivery pipe, the valve body and the medium inlet pipe, and the valve body is fixedly connected with the medium delivery pipe and the medium inlet pipe through the positioning flange and the connecting flange.

The second sealing connector is fixedly installed at one end, close to the medium inlet pipe, of the valve body, a sealing groove is formed in one end, close to the second valve clack, of the second sealing connector, and the sealing edge is installed in the sealing groove in a contact mode.

The first sealing connector and the second sealing connector are arranged in a circular ring shape with the same size, and the first sealing connector, the second sealing connector and the connecting rod are coaxial.

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

the utility model discloses a first valve clack and the cooperation of first sealed connector, second valve clack and the cooperation of second sealed connector, set up sealed limit and seal groove at second valve clack and the second sealed connector junction and carry out sealing connection, cut off the medium fluid through twice, prevent the medium backward flow; meanwhile, the return spring is used for connecting the connecting sleeve and the positioning connecting ring, the sealing speed of the first valve clack and the second valve clack is increased when the medium flows back, the medium backflow flow is reduced, a small amount of backflow medium can exist between the first valve clack and the second valve clack in the valve body and cannot flow back into the medium guide-in pipe, and the protection of medium fluid is further improved.

The present invention will be explained in detail with reference to the drawings and specific embodiments.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic overall sectional structure of the present invention;

fig. 3 is a schematic view of the sectional structure of the valve flap of the present invention.

In the figure: 1. a medium delivery pipe; 2. positioning a flange plate; 3. a valve body; 4. adjusting the connecting body; 5. sealing the top cover; 6. a medium introduction pipe; 7. a flow through hole; 8. a first valve flap; 9. a first sealed connector; 10. a connecting sleeve; 11. a return spring; 12. positioning the connecting ring; 13. fixing a bracket; 14. a connecting rod; 15. a second valve flap; 16. a second sealed connector; 17. and (7) sealing the edges.

Detailed Description

In order to facilitate understanding of the present invention, the present invention will be described more fully with reference to the accompanying drawings, in which several embodiments of the present invention are shown, but the present invention can be implemented in different forms, and is not limited to the embodiments described in the text, but rather, these embodiments are provided to make the disclosure of the present invention more thorough and comprehensive.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may be present, and when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present, as the terms "vertical", "horizontal", "left", "right" and the like are used herein for descriptive purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs, and the use of the term knowledge in the specification of the present invention is for the purpose of describing particular embodiments and is not intended to limit the present invention, and the term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.

Please refer to fig. 1-3, an automatic check valve comprises a valve body 3, an adjusting connector 4 is fixedly connected to the middle of the top of the valve body 3, the top of the adjusting connector 4 is fixedly connected to a sealing top cover 5 through a connecting bolt, two ends of the valve body 3 are fixedly connected to positioning flange plates 2, one end of the valve body 3 is fixedly connected to a medium outlet pipe 1, the other end of the valve body 3 is fixedly connected to a medium inlet pipe 6, a flow through hole 7 is formed in the medium outlet pipe 1, a first sealing connector 9 is fixedly connected to the wall of the flow through hole 7 in the connection part of the valve body 3 and the medium outlet pipe 1, one end of the first sealing connector 9 far away from the valve body 3 is in contact connection with a first valve flap 8, a connecting rod 14 is fixedly connected to the middle of one end of the first valve flap 8 close to the first sealing connector 9, fixedly connected with connecting sleeve 10 in the middle of the connecting rod 14, both ends fixedly connected with reset spring 11 about connecting sleeve 10 is close to one side inner wall of first valve clack 8, the one end fixedly connected with location go-between 12 of first valve clack 8 is kept away from to two reset spring 11, the one end fixedly connected with second valve clack 15 of first valve clack 8 is kept away from to connecting rod 14, the one end fixedly connected with sealing edge 17 of connecting rod 14 is kept away from to second valve clack 15, the one end sealing contact that second valve clack 15 was kept away from to sealing edge 17 has second sealing connection body 16.

A through groove is formed in the middle of the top of the adjusting connector 4 and penetrates through the adjusting connector 4 and the valve wall on the upper portion of the valve body 3, and four fixing supports 13 are fixedly connected to the wall of the flowing through hole 7 on the inner wall of the valve body 3. The positioning connecting ring 12 is slidably mounted inside the connecting sleeve 10, sliding grooves are formed in four sides of the connecting sleeve 10, and the four fixing supports 13 are slidably mounted in the sliding grooves. The flow through hole 7 penetrates through the medium outlet pipe 1, the valve body 3 and the medium inlet pipe 6, and the valve body 3 is fixedly connected with the medium outlet pipe 1 and the medium inlet pipe 6 through the positioning flange 2 and the connecting flange.

The second sealing connecting body 16 is fixedly installed at one end, close to the medium inlet pipe 6, inside the valve body 3, a sealing groove is formed at one end, close to the second valve flap 15, of the second sealing connecting body 16, and a sealing edge 17 is installed in the sealing groove in a contact mode. The first sealed connection body 9 and the second sealed connection body 16 are formed in a ring shape having the same size, and the first sealed connection body 9, the second sealed connection body 16, and the connection rod 14 are coaxial.

The utility model discloses a concrete operation as follows: medium fluid enters the valve body 3 through the medium leading-in pipe 6 and then enters the medium leading-out pipe 1, when the pressure of the entered medium fluid is greater than the pressure of the medium fluid flowing out, the first valve clack 8 and the second valve clack 15 are opened, and when the medium flows back, the first valve clack 8 and the second valve clack 15 are closed, the utility model discloses a first valve clack 8 and a first sealing connector 9 are matched, a second valve clack 15 and a second sealing connector 16 are matched, a sealing edge 17 and a sealing groove are arranged at the joint of the second valve clack 15 and the second sealing connector 16 for sealing connection, and the medium fluid is cut off through two cuts off, so that the medium can be prevented from flowing back; meanwhile, the return spring 11 is used for connecting the connecting sleeve 10 and the positioning connecting ring 12, the sealing speed of the first valve clack 8 and the second valve clack 15 is increased when the medium flows back, the medium backflow flow is reduced, a small amount of backflow medium can exist between the first valve clack 8 and the second valve clack 15 in the valve body 3 and cannot flow back into the medium introducing pipe 6, and the protection of medium fluid is further improved.

The present invention has been described above with reference to the accompanying drawings, and it is obvious that the present invention is not limited by the above-mentioned manner, if the method and the technical solution of the present invention are adopted, the present invention can be directly applied to other occasions without substantial improvement, and the present invention is within the protection scope of the present invention.

Claims

1. An automatic check valve, including valve body (3), its characterized in that: the middle of the top of the valve body (3) is fixedly connected with an adjusting connector (4), the top of the adjusting connector (4) is fixedly connected with a sealing top cover (5) through a connecting bolt, two ends of the valve body (3) are fixedly connected with a positioning flange (2), one end of the valve body (3) is fixedly connected with a medium delivery pipe (1), the other end of the valve body (3) is fixedly connected with a medium leading-in pipe (6), a flowing through hole (7) is formed in the medium delivery pipe (1), a first sealing connector (9) is fixedly connected with the hole wall of the flowing through hole (7) in the joint of the valve body (3) and the medium delivery pipe (1), one end of the first sealing connector (9) far away from the valve body (3) is in contact connection with a first valve flap (8), and a connecting rod (14) is fixedly connected in the middle of one end of, the middle of the connecting rod (14) is connected with a positioning connecting ring (12) in a sliding mode, four sides of the positioning connecting ring (12) are fixedly connected with a fixed support (13), the middle of the connecting rod (14) is fixedly connected with a connecting sleeve (10), the upper end and the lower end of the inner wall of one side, close to the first valve clack (8), of the connecting sleeve (10) are fixedly connected with return springs (11), two return springs (11) are fixedly connected with the positioning connecting ring (12) far away from the one end of the first valve clack (8), the connecting rod (14) is fixedly connected with a second valve clack (15) far away from the one end of the first valve clack (8), the second valve clack (15) is far away from one end of the connecting rod (14) and is fixedly connected with a sealing edge (17), and the sealing edge (17.

2. An automatic check valve as claimed in claim 1, wherein: the middle of the top of the adjusting connector (4) is provided with a through groove which penetrates through the adjusting connector (4) and the valve wall on the upper part of the valve body (3), and four fixing supports (13) are fixedly connected with the wall of the flowing through hole (7) on the inner wall of the valve body (3).

3. An automatic check valve as claimed in claim 1, wherein: the positioning connecting ring (12) is slidably mounted inside the connecting sleeve (10), sliding grooves are formed in four sides of the connecting sleeve (10), and the four fixing supports (13) are slidably mounted in the sliding grooves.

4. An automatic check valve as claimed in claim 1, wherein: the flow through hole (7) penetrates through the medium delivery pipe (1), the valve body (3) and the medium introduction pipe (6), and the valve body (3) is fixedly connected with the medium delivery pipe (1) and the medium introduction pipe (6) through the positioning flange plate (2) and the connecting flange plate.

5. An automatic check valve as claimed in claim 1, wherein: the second sealing connector (16) is fixedly installed at one end, close to the medium inlet pipe (6), inside the valve body (3), a sealing groove is formed in one end, close to the second valve clack (15), of the second sealing connector (16), and the sealing edge (17) is installed in the sealing groove in a contact mode.

6. An automatic check valve as claimed in claim 1, wherein: the first sealing connector (9) and the second sealing connector (16) are arranged in a circular ring shape with the same size, and the first sealing connector (9), the second sealing connector (16) and the connecting rod (14) are coaxial.