CN219639598U

CN219639598U - Axial-flow check valve with good sealing performance

Info

Publication number: CN219639598U
Application number: CN202321274574.9U
Authority: CN
Inventors: 戴恒杰; 葛茂俊; 沈娅绮
Original assignee: Taizhou En Great Precision Machinery Co ltd
Current assignee: Taizhou En Great Precision Machinery Co ltd
Priority date: 2023-05-24
Filing date: 2023-05-24
Publication date: 2023-09-05
Anticipated expiration: 2033-05-24

Abstract

The utility model belongs to the technical field of check valves, in particular to an axial flow check valve with good sealing performance, which aims at the problem that a positioning structure is lack of a long thread valve rod of a conventional check valve, so that the sealing stability of a flashboard is not guaranteed, and leakage is possible during assembly of multiple parts of the check valve. The utility model has reasonable structural design, prevents the flashboard from rotating accidentally by limiting the rotation of the bracelet through the matching of the U-shaped plate and the clamping groove, and improves the tightness and the reliability of the check valve during the assembly through the matching of the conical plate and the limiting groove and the plurality of metal winding gaskets.

Description

Axial-flow check valve with good sealing performance

Technical Field

The utility model relates to the technical field of check valves, in particular to an axial flow check valve with good sealing performance.

Background

The check valve is a valve with a circular valve clack and used for blocking the backflow of medium by the action of self weight and medium pressure, and belongs to automatic valves, which are also called check valves, one-way valves, check valves or isolating valves. Wherein the movement modes of the valve clack are divided into a lifting type and a swing type. The lifting check valve is similar to a stop valve in structure, and only lacks a valve rod for driving the valve clack. The medium flows in from the inlet end (lower side) and flows out from the outlet end (upper side).

However, in implementing the embodiments of the present utility model, the inventors have found that at least the following drawbacks exist in the background art: the long thread valve rod of the conventional check valve lacks a positioning structure, so that the sealing stability of a flashboard is not guaranteed, and the check valve has the possibility of leakage in the process of multi-component assembly, so that an axial flow check valve with good sealing performance is provided for solving the problem.

Disclosure of Invention

The utility model aims to solve the problems in the background art, and provides an axial flow check valve with good sealing performance.

In order to achieve the above purpose, the present utility model adopts the following technical scheme:

the utility model provides an axial-flow check valve that leakproofness is good, includes the body, the outside intercommunication of body has the valve gap, there is the second connecting pipe at the top of valve gap through a plurality of screw fixed mounting, the fixed intercommunication in top of second connecting pipe has the long tube, the top fixed mounting of long tube has a fixed section of thick bamboo, the long thread valve rod is installed in the fixed section of thick bamboo internal rotation, the flashboard is installed in the body rotation, the bottom of long thread valve rod with flashboard fixed connection, the outside fixed cover of long thread valve rod is equipped with the installation cover, the outside fixed mounting of installation cover has a plurality of connecting plates, a plurality of one side fixed mounting of connecting plate has same ring body, a plurality of slidable mounting has same U template on two connecting plates in the connecting plate, the outside fixed mounting of fixed section of thick bamboo has the annular plate, a plurality of draw-in grooves have been seted up at the top of annular plate, the bottom movable joint of U template is in two draw-in grooves in a plurality of draw-in grooves, both sides all fixed mounting has the installation ring around the body.

Preferably, the bottoms of two of the connecting plates are provided with vertical grooves, the outer sides of the U-shaped plates are fixedly provided with a plurality of short plates, and the same reset spring is fixedly arranged between the short plates and the inner walls of the corresponding vertical grooves.

Preferably, a plurality of limiting plates are fixedly arranged on the inner wall of the vertical groove, and the limiting plates are matched with the corresponding short plates.

Preferably, a plurality of metal winding gaskets are fixedly installed on the inner wall of the long tube, the metal winding gaskets are rotationally sleeved on the outer side of the long thread valve rod, and the metal winding gaskets are made of strong flexible graphite.

Preferably, two sides of the flashboard are respectively provided with a seat ring, and the seat rings are fixedly connected with the flashboard in a sealing welding mode.

Preferably, the valve cover and the outer side of the second connecting pipe are both provided with extension plates, the bottoms of the extension plates above are provided with conical plates, the tops of the extension plates below are provided with limit grooves, and the conical plates are movably clamped in the limit grooves.

According to the axial flow check valve with good sealing performance, the bracelet is formed by the mounting sleeve, the connecting plates and the ring body, the rotation of the long thread valve rod is controlled by the bracelet, the rotation of the flashboard is further controlled, the rotation of the bracelet is limited by the cooperation of the U-shaped plate and the clamping groove, the flashboard is prevented from rotating accidentally, and the sealing performance is improved;

according to the axial flow check valve with good sealing performance, the valve cover is tightly connected with the second connecting pipe through the matching of the conical plate and the limiting groove, the long pipe is sealed through the plurality of metal winding gaskets, gaps are formed when the check valve is assembled, and sealing performance is improved;

the utility model has reasonable structural design, prevents the flashboard from rotating accidentally by limiting the rotation of the bracelet through the matching of the U-shaped plate and the clamping groove, and improves the tightness and the reliability of the check valve during the assembly through the matching of the conical plate and the limiting groove and the plurality of metal winding gaskets.

Drawings

FIG. 1 is a schematic perspective view of an axial flow check valve with good sealing performance according to the present utility model;

FIG. 2 is a schematic cross-sectional view of an axial flow check valve with good sealing performance according to the present utility model;

fig. 3 is a partial enlarged view of a portion a in fig. 2.

In the figure: 1. a tube body; 2. a valve cover; 3. a long tube; 4. a fixed cylinder; 5. a long thread valve stem; 6. a flashboard; 7. a mounting sleeve; 8. a connecting plate; 9. a ring body; 10. a U-shaped plate; 11. a mounting ring; 12. a ring plate; 13. a short plate; 14. a return spring; 15. a limiting plate; 16. a metal winding gasket; 17. a seat ring; 18. an extension plate; 19. a conical plate.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments.

Referring to fig. 1-3, an axial flow check valve with good sealing performance comprises a pipe body 1, a valve cover 2 is communicated with the outer side of the pipe body 1, a second connecting pipe is fixedly arranged at the top of the valve cover 2 through a plurality of screws, a long pipe 3 is fixedly communicated with the top of the second connecting pipe, a fixed cylinder 4 is fixedly arranged at the top of the long pipe 3, a long thread valve rod 5 is rotatably arranged in the fixed cylinder 4, a flashboard 6 is rotatably arranged in the pipe body 1, the bottom end of the long thread valve rod 5 is fixedly connected with the flashboard 6, a mounting sleeve 7 is fixedly sleeved on the outer side of the long thread valve rod 5, a plurality of connecting plates 8 are fixedly arranged on the outer side of the mounting sleeve 7, one ring body 9 is fixedly arranged on one side of the plurality of connecting plates 8, one U-shaped plate 10 is fixedly arranged on two connecting plates 8 of the plurality of connecting plates 8, a plurality of clamping grooves are formed in the outer side of the fixed cylinder 4, a plurality of clamping grooves are formed in the top of the ring plate 12, the bottoms of the U-shaped plate 10 are movably clamped in two clamping grooves of the plurality of clamping grooves, and mounting rings 11 are fixedly arranged on the front and back sides of the pipe body 1.

In the utility model, vertical grooves are formed at the bottoms of two connecting plates 8 in the plurality of connecting plates 8, a plurality of short plates 13 are fixedly arranged at the outer sides of the U-shaped plates 10, the same reset spring 14 is fixedly arranged between the short plates 13 and the inner walls of the corresponding vertical grooves, and the reset spring 14 and the short plates 13 play a reset role on the U-shaped plates 10.

In the utility model, the inner wall of the vertical groove is fixedly provided with a plurality of limiting plates 15, the limiting plates 15 are matched with the corresponding short plates 13, and the U-shaped plates are limited by the matching of the limiting plates 15 and the short plates 13.

In the utility model, a plurality of metal winding gaskets 16 are fixedly arranged on the inner wall of the long tube 3, the metal winding gaskets 16 are rotatably sleeved on the outer side of the long thread valve rod 5, the metal winding gaskets 16 are made of strong flexible graphite, and the long tube 3 is sealed through the plurality of metal winding gaskets 16.

In the utility model, the two sides of the flashboard 6 are respectively provided with the seat rings 17, the seat rings 17 are fixedly connected with the flashboard 6 in a sealing welding mode, and the tightness of the flashboard 6 is improved through the arrangement of the seat rings 17.

In the utility model, the outer sides of the valve cover 2 and the second connecting pipe are respectively provided with the extension plate 18, the bottom of the extension plate 18 positioned above is provided with the conical plate 19, the top of the extension plate 18 positioned below is provided with the limit groove, the conical plate 19 is movably clamped in the limit groove, and the valve cover 2 and the second connecting pipe are tightly connected through the cooperation of the conical plate 19 and the limit groove, so that the sealing performance is improved.

In the utility model, when the check valve is used, the bracelet is formed by the mounting sleeve 7, the plurality of connecting plates 8 and the ring body 9, the long thread valve rod 5 is controlled to rotate by the bracelet, the flashboard 6 is further controlled to rotate, the rotation of the bracelet is limited by the cooperation of the U-shaped plate 10 and the clamping groove, the flashboard 6 is prevented from rotating accidentally, the tightness is improved, the valve cover 2 is tightly connected with the second connecting pipe by the cooperation of the conical plate 19 and the limiting groove, the long pipe 3 is sealed by the plurality of metal winding gaskets 16, the gap is generated when the check valve is assembled, and the sealing performance is improved.

Finally, it should be noted that: the foregoing description is only illustrative of the preferred embodiments of the present utility model, and although the present utility model has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements or changes may be made without departing from the spirit and principles of the present utility model.

Claims

1. The utility model provides an axial-flow check valve that leakproofness is good, its characterized in that, including body (1), the outside intercommunication of body (1) has valve gap (2), the top of valve gap (2) is through a plurality of screw fixed mounting has second connecting pipe, the top fixed intercommunication of second connecting pipe has long tube (3), the top fixed mounting of long tube (3) has fixed section of thick bamboo (4), fixed section of thick bamboo (4) internal rotation installs long thread valve rod (5), body (1) internal rotation installs flashboard (6), the bottom of long thread valve rod (5) with flashboard (6) fixed connection, the outside fixed cover of long thread valve rod (5) is equipped with installation sleeve (7), the outside fixed mounting of installation sleeve (7) has a plurality of connecting plates (8), a plurality of one side fixed mounting of connecting plate (8) has same ring body (9), a plurality of sliding mounting has same U template (10) on two connecting plates (8) in long thread valve rod (4), the outside of fixed barrel (4) has fixed mounting in the draw-in groove (12) of two draw-in groove (12), the draw-in groove is seted up in groove (1) in the outside of two sides.

2. The axial flow check valve with good sealing performance according to claim 1, wherein vertical grooves are formed in bottoms of two connecting plates (8) of the plurality of connecting plates (8), a plurality of short plates (13) are fixedly arranged on the outer side of the U-shaped plate (10), and the same reset spring (14) is fixedly arranged between the short plates (13) and the inner walls of the corresponding vertical grooves.

3. An axial flow check valve with good sealing performance according to claim 2, characterized in that a plurality of limiting plates (15) are fixedly arranged on the inner wall of the vertical groove, and the limiting plates (15) are matched with the corresponding short plates (13).

4. The axial flow check valve with good sealing performance according to claim 1, wherein a plurality of metal winding gaskets (16) are fixedly arranged on the inner wall of the long tube (3), the metal winding gaskets (16) are rotatably sleeved on the outer side of the long thread valve rod (5), and the metal winding gaskets (16) are made of strong flexible graphite.

5. The axial flow check valve with good sealing performance according to claim 1, wherein two sides of the gate plate (6) are provided with seat rings (17), and the seat rings (17) are fixedly connected with the gate plate (6) in a sealing welding mode.

6. The axial flow check valve with good sealing performance according to claim 1, wherein the valve cover (2) and the outer side of the second connecting pipe are both provided with extension plates (18), the bottoms of the extension plates (18) above are provided with conical plates (19), the tops of the extension plates (18) below are provided with limit grooves, and the conical plates (19) are movably clamped in the limit grooves.