CN220452792U - Anti-seize lifting check valve - Google Patents

Abstract

The utility model relates to the technical field of check valves, in particular to an anti-blocking lifting check valve which comprises a valve body, a mounting plate and a diversion cavity, wherein the mounting plate is mounted at the top end of the valve body, a sealing seat is mounted at the top end of the mounting plate, a protective cover is mounted above the mounting plate, a supporting sliding rod is mounted at the top end of the inner wall of the protective cover, a sliding plate is sleeved on the outer side of the supporting sliding rod, a valve rod is mounted at the bottom end of the sliding plate, a fixing ring is mounted at the outer side of the valve rod, and scraping plates are hinged at two ends of the fixing ring. According to the utility model, when the liquid in the valve body is gradually reduced, the compressed compression spring can rebound, the scrapers arranged on the two sides of the valve rod can gradually extend out from the interior of the extrusion ring and spread, and the opposite ends of the scrapers can scrape impurities attached to the inner wall of the diversion cavity, so that the condition that the valve rod is blocked in the lifting process of the valve clack caused by excessive attached impurities after long-time use of the inner wall of the diversion cavity is avoided.

Description

Anti-seize lifting check valve

Technical Field

The utility model relates to the technical field of check valves, in particular to an anti-blocking lifting check valve.

Background

The check valve is used as an automatic valve for a pipeline system to prevent the backflow of a medium in a pipeline, when the medium in the pipeline flows forward, the flowing medium automatically opens the valve clack of the check valve, and when the medium in the pipeline flows reversely, the valve clack is automatically closed under the combined action of the medium force and the gravity of the valve clack, so that the backflow of the medium in the pipeline is prevented.

When the lifting check valve is used for a medium containing solids, part of the medium can be deposited on the surface of a part of the check valve, particularly the surface of a valve clack and a valve body in sliding fit, so that the valve clack cannot be flexibly opened or closed in the valve body, even is completely blocked, and the valve clack of the check valve cannot be opened or closed, and cannot be opened for overhauling in the running process of the device, so that the whole system is in fault, and the system is stopped often because of overhauling of the check valve, so that the loss is huge, and the lifting check valve is a difficult problem which is difficult to overcome when being used for the medium containing solids.

This particular proposal is directed to an anti-seize lifting check valve.

Disclosure of Invention

The utility model aims to provide an anti-blocking lifting check valve, which solves the problems in the background art, and in order to achieve the purposes, the utility model provides the following technical scheme: the utility model provides an anti-sticking over-and-under type check valve, includes valve body, mounting panel and current transferring chamber, the mounting panel is installed on the top of valve body, the sealing seat is installed on the top of mounting panel, the protection casing is installed to the mounting panel top, support slide bar is installed on the top of protection casing inner wall, the outside cover of support slide bar is equipped with the slide, the valve rod is installed to the bottom of slide, solid fixed ring is installed in the outside of valve rod, gu fixed ring's both ends are articulated to have the scraper blade, extension spring is installed in the outside of valve rod, extension spring's one end is articulated with one side of scraper blade.

Preferably, a water inlet end is arranged at one end of the valve body, and a water outlet end is arranged at the other end of the water inlet end.

Preferably, a diversion cavity is formed in the valve body, and the bottom end of the valve rod extends into the diversion cavity.

Preferably, the valve clack is installed to the bottom of valve rod, and the outer wall and the revolving stream intracavity wall cooperation installation of valve clack.

Preferably, the bottom end of the mounting plate is provided with an extrusion ring, and the extrusion ring extends into the rotating flow cavity.

Preferably, the valve rod is slidably mounted in the sealing seat, and a compression spring is sleeved on the outer side of the support sliding rod.

Preferably, the scraping plate is in a semicircular sheet shape, and the scraping plate is matched with the inner wall of the diversion cavity.

Compared with the prior art, the utility model provides an anti-blocking lifting check valve, which comprises the following components

The beneficial effects are that:

through being provided with valve rod, scraper blade, solid fixed ring and extrusion circle, when the inside liquid of valve body reduces gradually, the compression spring that receives the compression can take place to rebound, thereby push the slide and slide downwards, make the valve rod simultaneously along the inside of turning flow chamber down, the scraper blade of valve rod both sides installation can extend gradually from extrusion circle's inside and expand this moment, thereby make the bottom of scraper blade contact with turning flow chamber inner wall, along with the valve rod constantly gliding, the opposite end of scraper blade can strike off the impurity that adheres to on the turning flow chamber inner wall, thereby avoid turning flow chamber inner wall through using the too much in-process that leads to the valve rod to take place to block of valve clack lift of adhering to impurity for a long time, the normal use of check valve has been guaranteed.

Drawings

FIG. 1 is a schematic diagram of the main structure of the present utility model;

FIG. 2 is a schematic view of the structure of the present utility model in use;

FIG. 3 is a schematic top view of a portion of the structure of the present utility model;

fig. 4 is an enlarged schematic view of the structure of the present utility model at a.

In the figure: 1. a valve body; 2. a water inlet end; 3. a scraper; 4. a fixing ring; 5. a mounting plate; 6. supporting a slide bar; 7. a slide plate; 8. a sealing seat; 9. a compression spring; 10. a protective cover; 11. a pressing ring; 12. a diversion cavity; 13. a valve stem; 14. a water outlet end; 15. a valve flap; 16. and a telescopic spring.

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. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Example 1: the mounting panel 5 is installed on the top of valve body 1, sealing seat 8 is installed on the top of mounting panel 5, protection casing 10 is installed to mounting panel 5 top, support slide bar 6 is installed on the top of protection casing 10 inner wall, the outside cover of support slide bar 6 is equipped with slide 7, valve rod 13 is installed to the bottom of slide 7, solid fixed ring 4 is installed in the outside of valve rod 13, scraper blade 3 is articulated at the both ends of solid fixed ring 4, extension spring 16 is installed in the outside of valve rod 13, one end and one side of scraper blade 3 of extension spring 16 are articulated, extrusion circle 11 is installed to the bottom of mounting panel 5, and extrusion circle 11 extends into the inside of revolving flow chamber 12, valve rod 13 slidable mounting is in the inside of sealing seat 8, the outside cover of support slide bar 6 is equipped with compression spring 9.

Specifically, as shown in fig. 1, 2, 3 and 4, since the top end of the valve body 1 is mounted with the shield 10. And the internally mounted of protection casing 10 has support slide bar 6, after the inside of liquid entering valve body 1 from water inlet end 2, the liquid can extrude valve clack 15, thereby make valve rod 13 upwards move, because the fixed ring 4 is installed in the outside of valve rod 13, and the both sides of fixed ring 4 are articulated to have scraper blade 3, when valve rod 13 upwards moves, can drive scraper blade 3 upwards simultaneously, because the extrusion circle 11 is installed to the bottom of mounting panel 5, and extrusion circle 11 extends into the inside of rotating flow chamber 12, when valve rod 13 upwards moves, can make the bottom of scraper blade 3 get into extrusion circle 11 inside, thereby extrude scraper blade 3 to the both sides of valve rod 13 draw close, make the inner wall of rotating flow chamber 12 is kept away from to the bottom of scraper blade 3, because slide plate 7 is installed on the top of valve rod 13, and slide plate 7 slidable mounting is in the outside of supporting slide bar 6, and the outside cover of supporting slide bar 6 is equipped with compression spring 9, when the inside liquid of valve body 1 reduces gradually, the compression spring 9 that receives the time, thereby push down slide plate 7 makes valve rod 13 move down along the inside of rotating flow chamber 12, simultaneously, the both sides of inner wall 13 is gradually installed from the bottom of scraper blade 3 and the inside of rotating flow chamber 12 is stretched out along with the inner wall 12, thereby the time interval 12 is prolonged to the inside of the inner wall of scraper blade 3 and the inner wall that rotates the inner wall of rotating flow chamber 12 is stretched along with the time of the valve rod 3, thereby prevent the top end of the inner wall of the normal to stretch out to the inner wall of the valve rod 12, and prevent the top of the inner wall of the valve body from contacting the inner wall of the valve plate 12 from contacting the inner wall of the valve 12.

The one end of valve body 1 has been seted up into water end 2, and the other end of water end 2 has been seted up out water end 14, and the diversion chamber 12 has been seted up to the inside of valve body 1, and the bottom of valve rod 13 extends into diversion chamber 12 inside, and valve clack 15 is installed to the bottom of valve rod 13, and the outer wall and the cooperation of diversion chamber 12 inner wall of valve clack 15 are installed, and scraper blade 3 is semicircle slice, and scraper blade 3 and the inner wall cooperation of diversion chamber 12 use.

Specifically, can make liquid get into the inside of valve body 1 through water inlet end 2, can make liquid through the inside of valve body 1 and flow out through water outlet end 14, can make whole valve carry out the effect of non return to the liquid in the pipeline through the diversion chamber 12, can control the intercommunication state between water inlet end 2 and the water outlet end 14 through valve clack 15, because scraper blade 3 is semicircle ring slice, consequently, can carry out impurity scraping to whole diversion chamber 12 inner wall through two scraper blades 3 of left and right sides, avoid the condition that the valve blocked to take place.

Working principle: during the use, with the water inlet end 2 and the play water end 14 that valve body 1 both ends were seted up respectively with the pipeline be connected, afterwards, after liquid gets into the inside of valve body 1 from water inlet end 2, liquid can squeeze valve clack 15, thereby make valve rod 13 upwards move, when valve rod 13 upwards move, can drive scraper blade 3 simultaneously upwards move, because the extrusion circle 11 is installed to the bottom of mounting panel 5, and extrusion circle 11 extends into the inside of rotating flow chamber 12, when valve rod 13 upwards moves, can make the bottom of scraper blade 3 get into extrusion circle 11 inside, thereby the both sides of extrusion scraper blade 3 draw close to valve rod 13, make the inner wall of rotating flow chamber 12 is kept away from to the bottom of scraper blade 3, because slide 7 is installed on the top of valve rod 13, and slide 7 slidable mounting is in the outside of supporting slide bar 6, and the outside cover of supporting slide bar 6 is equipped with compression spring 9, when the inside liquid of valve body 1 reduces gradually, thereby push away from the compression spring 9 can take place, simultaneously make valve rod 13 down move along the inside of rotating flow chamber 12, when the scraper blade 3 both sides are installed, can stretch out from the inside of rotating flow chamber 12 gradually from the extrusion circle 11 and stretch out the inner wall 12 along with the inner wall 12, thereby the time-stop the inner wall of rotating flow chamber 12 is not carried out along with the inner wall of scraper blade 3, the time-stop valve 12 is guaranteed to the time-stop the time is carried out, the inner wall of the end of the opposite end of the valve rod is not contacting the inner wall of the end of the valve rod 12, and the end is used to the time-stop valve is guaranteed, and the time-stop device is not to be used, and the time is used to the time to stop down.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present utility model may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims (7)

1. The utility model provides an anti-sticking over-and-under type check valve, includes valve body (1), mounting panel (5) and diversion chamber (12), its characterized in that: mounting panel (5) are installed on the top of valve body (1), sealing seat (8) are installed on the top of mounting panel (5), protection casing (10) are installed on mounting panel (5) top, support slide bar (6) are installed on the top of protection casing (10) inner wall, the outside cover of support slide bar (6) is equipped with slide plate (7), valve rod (13) are installed to the bottom of slide plate (7), solid fixed ring (4) are installed in the outside of valve rod (13), scraper blade (3) are articulated at the both ends of solid fixed ring (4), extension spring (16) are installed in the outside of valve rod (13), one end of extension spring (16) is articulated with one side of scraper blade (3).

2. The anti-seize lifting check valve as defined in claim 1, wherein: one end of the valve body (1) is provided with a water inlet end (2), and the other end of the water inlet end (2) is provided with a water outlet end (14).

3. The anti-seize lifting check valve as defined in claim 1, wherein: the valve is characterized in that a diversion cavity (12) is formed in the valve body (1), and the bottom end of the valve rod (13) extends into the diversion cavity (12).

4. A tamper-evident lifting check valve as defined in claim 3, wherein: the bottom end of the valve rod (13) is provided with a valve clack (15), and the outer wall of the valve clack (15) is matched with the inner wall of the flow transferring cavity (12).

5. The anti-seize lifting check valve as defined in claim 1, wherein: the bottom end of the mounting plate (5) is provided with an extrusion ring (11), and the extrusion ring (11) extends into the rotating flow cavity (12).

6. The anti-seize lifting check valve as defined in claim 1, wherein: the valve rod (13) is slidably arranged in the sealing seat (8), and the outer side of the supporting sliding rod (6) is sleeved with the compression spring (9).

7. The anti-seize lifting check valve as defined in claim 1, wherein: the scraping plate (3) is in a semicircular plate shape, and the scraping plate (3) is matched with the inner wall of the diversion cavity (12).