CN215172518U

CN215172518U - Lifting check valve with good sealing performance

Info

Publication number: CN215172518U
Application number: CN202120190001.2U
Authority: CN
Inventors: 林剑; 林友义
Original assignee: Zhejiang Huachi Valve Co ltd
Current assignee: Zhejiang Huachi Valve Co ltd
Priority date: 2021-01-22
Filing date: 2021-01-22
Publication date: 2021-12-14
Anticipated expiration: 2031-01-22

Abstract

The utility model discloses a good over-and-under type check valve of leakproofness, including valve body and disk seat, the top rigid coupling of valve body has the disk seat, the internally mounted of valve body has controlling means. This good over-and-under type check valve of leakproofness, through first diaphragm, first montant, the valve clack, the anticorrosive coating, mutually support between inlet tube and the outlet pipe isotructure, when the valve clack removes, can drive the second montant through the valve clack and remove in first montant department, thereby play limiting displacement to the valve clack through first montant and second montant, can improve the corrosion resisting property of valve clack through the anticorrosive coating simultaneously, increase the life of valve clack, through the valve gap, sealing bearing, the valve rod, the carousel, the second diaphragm, the rubber pad, mutually support between the structures such as threaded rod, can drive the valve rod through the carousel and rotate, the valve rod drives the valve clack through the threaded rod and removes, sealing bearing and the rubber pad through valve rod outer wall department can improve the leakproofness simultaneously, prevent to leak.

Description

Lifting check valve with good sealing performance

Technical Field

The utility model relates to a check valve technical field specifically is a good over-and-under type check valve of leakproofness.

Background

The check valve is a valve with a circular valve clack and acts by self weight and medium pressure to block medium backflow, belongs to the automatic valve class, and is also called a check valve, a one-way valve, a backflow valve or an isolation valve, the valve clack motion mode is divided into a lifting type and a swing type, the lifting type check valve is similar to the structure of the stop valve, only a valve rod for driving the valve clack is lacked, namely the valve with the circular valve clack and acts by self weight and medium pressure to block the medium backflow, the blocking effect of the check valve in the prior art is reduced after the valve clack is used for a long time, the using effect is reduced, and meanwhile, the sealing performance of the check valve in the prior art is not good.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a good over-and-under type check valve of leakproofness to solve and propose among the above-mentioned background art and check valve among the prior art blocks the effect and just can reduce through long-time use valve clack department, thereby reduced the result of use problem.

In order to achieve the above object, the utility model provides a following technical scheme: a lifting check valve with good sealing performance comprises a valve body and a valve seat, wherein the valve seat is fixedly connected above the valve body, and a control device is arranged in the valve body;

the control device comprises a first transverse plate, a first vertical rod, a second vertical rod, a valve clack, an anticorrosive coating, a water inlet pipe and a water outlet pipe;

control the outside of first diaphragm links to each other with the inner wall of valve body is fixed, the lower surface rigid coupling of first diaphragm has first montant, the second montant has been cup jointed to the below outer wall of first montant, the lower surface rigid coupling of second montant has the valve clack, the outer wall rigid coupling of valve clack has the anticorrosive coating, the left and right sides of valve clack is equipped with inlet tube and outlet pipe respectively, inlet tube and outlet pipe all link to each other with the valve body is fixed.

Preferably, the first vertical rod and the first transverse plate are vertically arranged.

Preferably, the left and right second vertical rods are symmetrically distributed by taking the middle point of the valve clack as a center.

Preferably, a sealing device is arranged above the valve seat;

the sealing device comprises a valve cover, a sealing bearing, a valve rod, a rotary disc, a second transverse plate, a rubber pad, a support and a threaded rod;

the lower surface of valve gap and disk seat are fixed to be continuous, the top of valve gap is inside to rotate through sealed bearing and is connected with the valve rod, the upper surface rigid coupling of valve rod has the carousel, the inside screw thread in below of valve rod even has the threaded rod, the below outer wall of threaded rod links to each other with the valve clack is fixed, the rigid coupling has the second diaphragm in the middle of the inside of valve gap, the through-hole department inner wall of second diaphragm and the outer wall clearance fit of valve rod, the rubber pad is installed to the groove department of second diaphragm, the through-hole department inner wall and the outer wall of rubber pad closely laminate with the outer wall of valve rod and the groove department inner wall of second diaphragm respectively, the left and right sides outer wall rigid coupling of valve gap has the support, the inside outer wall with the valve rod in top of support rotates continuously.

Preferably, the second transverse plate and the first transverse plate are arranged in parallel.

Compared with the prior art, the beneficial effects of the utility model are that: according to the lifting check valve with good sealing property, through the mutual matching of the structures such as the first transverse plate, the first vertical rod, the second vertical rod, the valve clack, the anticorrosive coating, the water inlet pipe and the water outlet pipe, when the valve clack moves, the second vertical rod can be driven to move at the first vertical rod through the valve clack, so that the valve clack is limited through the first vertical rod and the second vertical rod, meanwhile, the anticorrosive property of the valve clack can be improved through the anticorrosive coating, and the service life of the valve clack is prolonged;

through mutually supporting between structures such as valve gap, sealed bearing, valve rod, carousel, second diaphragm, rubber pad, support and threaded rod, can drive the valve rod through the carousel and rotate, the valve rod drives the valve clack through the threaded rod and removes, and sealed bearing and rubber pad through valve rod outer wall department can improve the leakproofness simultaneously, prevent to leak.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic structural view of the second vertical rod, the valve flap and the anticorrosive coating in FIG. 1;

FIG. 3 is a schematic view of the structure of FIG. 1 at the turntable, valve stem and support;

fig. 4 is a schematic structural view of the rubber pad, the second cross plate and the valve cover in fig. 1.

In the figure: 1. valve body, 2, valve seat, 3, controlling means, 301, first diaphragm, 302, first montant, 303, second montant, 304, valve clack, 305, anticorrosive coating, 306, inlet tube, 307, outlet pipe, 4, sealing device, 401, valve gap, 402, sealed bearing, 403, valve rod, 404, carousel, 405, second diaphragm, 406, rubber pad, 407, support, 408, threaded rod.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-4, the present invention provides a technical solution: a lifting check valve with good sealing performance comprises a valve body 1 and a valve seat 2, the valve seat 2 is fixedly connected above the valve body 1, a control device 3 is installed inside the valve body 1, the control device 3 comprises a first transverse plate 301, a first vertical rod 302, a second vertical rod 303, a valve flap 304, an anticorrosive coating 305, a water inlet pipe 306 and a water outlet pipe 307, the outer sides of the left and right first transverse plates 301 are fixedly connected with the inner wall of the valve body 1, the first vertical rod 302 is fixedly connected to the lower surface of the first transverse plate 301, the second vertical rod 303 is sleeved on the outer wall below the first vertical rod 302, the second vertical rod 303 can move at the first vertical rod 302, the valve flap 304 is fixedly connected to the lower surface of the second vertical rod 303, the valve flap 304 can be limited by the second vertical rod 303, the anticorrosive coating 305 is fixedly connected to the outer wall of the valve flap 304, the anticorrosive coating 305 is made of polytetrafluoroethylene and has strong corrosion resistance, the water inlet pipe 306 and the water outlet pipe 307 are respectively arranged on the left and right sides of the valve flap 304, the water inlet pipe 306 and the water outlet pipe 307 are both fixedly connected with the valve body 1, the first vertical rod 302 and the first transverse plate 301 are vertically arranged, and the left and right second vertical rods 303 are symmetrically distributed by taking the middle point of the valve clack 304 as the center.

The sealing device 4 is installed above the valve seat 2, the sealing device 4 comprises a valve cover 401, a sealing bearing 402, a valve rod 403, a rotary disc 404, a second transverse plate 405, a rubber pad 406, a support 407 and a threaded rod 408, the lower surface of the valve cover 401 is fixedly connected with the valve seat 2, the upper inside of the valve cover 401 is rotatably connected with the valve rod 403 through the sealing bearing 402, the valve rod 403 can rotate at the valve cover 401 through the sealing bearing 402, the upper surface of the valve rod 403 is fixedly connected with the rotary disc 404, the lower inside of the valve rod 403 is in threaded connection with the threaded rod 408, the valve rod 403 can drive the threaded rod 408 to move, the lower outer wall of the threaded rod 408 is fixedly connected with the valve flap 304, the threaded rod 408 can drive the valve flap 304 to move, the second transverse plate 405 is fixedly connected with the middle inside of the valve cover 401, a through hole and 2 grooves are processed inside the second transverse plate 405, the inner wall of the through hole of the second transverse plate 405 is in clearance fit with the outer wall of the valve rod 403, rubber pad 406 is installed to the recess department of second diaphragm 405, and the through-hole department inner wall and the outer wall of rubber pad 406 are closely laminated with the outer wall of valve rod 403 and the recess department inner wall of second diaphragm 405 respectively, can improve the sealed effect of valve rod 403 department through rubber pad 406, and the left and right sides outer wall rigid coupling of valve gap 401 has support 407, and the inside outer wall with valve rod 403 that rotates in the top of support 407 links to each other, and second diaphragm 405 and first diaphragm 301 are parallel arrangement.

When an operator needs to use the lifting check valve with good sealing performance, firstly, the operator rotates the rotary disc 404 to enable the rotary disc 404 to drive the valve rod 403 to rotate, the valve rod 403 can drive the valve flap 304 to move through the threaded rod 408, when the valve flap 304 moves, the valve flap 304 can drive the second vertical rod 303 to move at the first vertical rod 302, the valve flap 304 can be limited through the first vertical rod 302 and the second vertical rod 303, the valve flap 304 always keeps moving in the vertical direction, the anticorrosive coating 305 is processed on the outer wall of the valve flap 304, the anticorrosive coating 305 is made of polytetrafluoroethylene and has strong corrosion resistance, so that the service life of the valve flap 304 can be prolonged, when the rotary disc 404 drives the valve rod to rotate, the valve rod 403 can rotate at the valve cover 401 through the sealing bearing 402, and the sealing performance between the valve cover 4401 and the valve rod 403 can be improved through the sealing bearing 402, and meanwhile, the rubber pad 406 is arranged at the groove of the second transverse plate 405, so that the sealing effect can be further improved through the rubber pad 406, and the water leakage phenomenon of the valve after long-time use is prevented.

In the description of the present invention, it is to be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "one side", "top", "inner", "front", "center", "both ends", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "disposed," "connected," "fixed," "screwed" and the like are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through an intermediate medium, and may be connected through the inside of two elements or in an interaction relationship between two elements, unless otherwise specifically defined, and the specific meaning of the above terms in the present invention will be understood by those skilled in the art according to specific situations.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a good over-and-under type check valve of leakproofness, includes valve body (1) and disk seat (2), the top rigid coupling of valve body (1) has disk seat (2), its characterized in that: a control device (3) is arranged in the valve body (1);

the control device (3) comprises a first transverse plate (301), a first vertical rod (302), a second vertical rod (303), a valve flap (304), an anticorrosive coating (305), a water inlet pipe (306) and a water outlet pipe (307);

control the outside of first diaphragm (301) links to each other with the inner wall of valve body (1) is fixed, the lower surface rigid coupling of first diaphragm (301) has first montant (302), second montant (303) have been cup jointed to the below outer wall of first montant (302), the lower surface rigid coupling of second montant (303) has valve clack (304), the outer wall rigid coupling of valve clack (304) has anticorrosive coating (305), the left and right sides of valve clack (304) is equipped with inlet tube (306) and outlet pipe (307) respectively, inlet tube (306) and outlet pipe (307) all link to each other with valve body (1) is fixed.

2. The poppet check valve as recited in claim 1, wherein: the first vertical rod (302) and the first transverse plate (301) are vertically arranged.

3. The poppet check valve as recited in claim 1, wherein: the left and right second vertical rods (303) are symmetrically distributed by taking the midpoint of the valve clack (304) as the center.

4. The poppet check valve as recited in claim 1, wherein: a sealing device (4) is arranged above the valve seat (2);

the sealing device (4) comprises a valve cover (401), a sealing bearing (402), a valve rod (403), a rotary disc (404), a second transverse plate (405), a rubber pad (406), a support (407) and a threaded rod (408);

the lower surface of valve gap (401) is fixed continuous with valve holder (2), the top of valve gap (401) is inside to rotate through sealed bearing (402) and is connected with valve rod (403), the upper surface rigid coupling of valve rod (403) has carousel (404), the inside screw thread in below of valve rod (403) has threaded rod (408), the below outer wall and the valve clack (304) of threaded rod (408) are fixed continuous, the rigid coupling has second diaphragm (405) in the middle of the inside of valve gap (401), the through-hole department inner wall and the outer wall clearance fit of valve rod (403) of second diaphragm (405), rubber pad (406) is installed to the groove department of second diaphragm (405), the through-hole department inner wall and the outer wall of rubber pad (406) closely laminate with the outer wall of valve rod (403) and the groove department inner wall of second diaphragm (405) respectively, the left and right sides outer wall rigid coupling of valve gap (401) has support (407), the upper inner part of the support (407) is rotatably connected with the outer wall of the valve rod (403).

5. The lift check valve of claim 4, wherein: the second transverse plate (405) and the first transverse plate (301) are arranged in parallel.