阅读说明：本技术 一种对夹式止回阀 (Wafer check valve ) 是由 李来滨 邵建国 杜爱芝 于 2020-06-19 设计创作，主要内容包括：本发明公开了一种对夹式止回阀,包括阀体,所述阀体内设有阀腔,所述阀腔的开口处固定安装有阀盖,所述阀体在正对阀盖的侧面设有与阀腔连通的进口管,所述阀盖上设有与阀腔连通的出口管,所述进口管和出口管同轴设置；所述阀腔内在进口管的外侧设有阀座面；所述阀腔的所述阀腔内设有转轴,所述转轴上铰接有左阀瓣和右阀瓣,所述转轴上套接有扭簧,所述左阀瓣和右阀瓣压紧在阀座面上时将进口管封堵；所述阀腔的内端面上在进口管的上下两侧均设有滑轨；两个轨道之间在进口管的左侧设有与左阀瓣连接的左刮刀组件,在进口管的右侧设有与右阀瓣连接的右刮刀组件；该对夹式止回阀不仅结构简单,而且能够将阀座面上的杂质清除。(The invention discloses a wafer check valve, which comprises a valve body, wherein a valve cavity is arranged in the valve body, a valve cover is fixedly arranged at an opening of the valve cavity, an inlet pipe communicated with the valve cavity is arranged on the side surface of the valve body, which is opposite to the valve cover, an outlet pipe communicated with the valve cavity is arranged on the valve cover, and the inlet pipe and the outlet pipe are coaxially arranged; a valve seat surface is arranged on the outer side of the inlet pipe in the valve cavity; a rotating shaft is arranged in the valve cavity of the valve cavity, a left valve clack and a right valve clack are hinged to the rotating shaft, a torsion spring is sleeved on the rotating shaft, and the inlet pipe is blocked when the left valve clack and the right valve clack are tightly pressed on the valve seat surface; slide rails are arranged on the upper side and the lower side of the inlet pipe on the inner end face of the valve cavity; a left scraper component connected with the left valve clack is arranged on the left side of the inlet pipe between the two tracks, and a right scraper component connected with the right valve clack is arranged on the right side of the inlet pipe; the wafer check valve not only has simple structure, but also can remove impurities on the valve seat surface.)

1. A wafer type check valve comprises a valve body, wherein a valve cavity is arranged in the valve body, a valve cover is fixedly installed at an opening of the valve cavity, an inlet pipe communicated with the valve cavity is arranged on the side face, opposite to the valve cover, of the valve body, an outlet pipe communicated with the valve cavity is arranged on the valve cover, and the inlet pipe and the outlet pipe are coaxially arranged; the valve is characterized in that a valve seat surface is arranged on the outer side of the inlet pipe in the valve cavity; a rotating shaft is arranged in the valve cavity of the valve cavity along the axial direction perpendicular to the inlet pipe, a left valve clack and a right valve clack are hinged to the rotating shaft, a torsion spring used for forcing the left valve clack and the right valve clack to press the valve seat surface is sleeved on the rotating shaft, and the inlet pipe is blocked when the left valve clack and the right valve clack are tightly pressed on the valve seat surface; slide rails are arranged on the upper side and the lower side of the inlet pipe on the inner end face of the valve cavity; be equipped with the left scraper subassembly of being connected with left valve clack between two tracks in the left side of import pipe, be equipped with the right scraper subassembly of being connected with right valve clack on the right side of import pipe, open when leaving the disk seat face at left valve clack, left valve clack drives left scraper subassembly and cleans left disk seat face, and when right valve clack left disk seat face, right valve clack drives right scraper subassembly and cleans the disk seat face on right side.

2. The wafer type check valve of claim 1, wherein the two slide rails are provided with slide grooves facing each other, the left scraper assembly comprises a left scraper and a left connecting rod, the left scraper is slidably connected between the two slide grooves and contacts with the valve seat surface, one end of the left connecting rod is hinged to the left scraper, the other end of the left connecting rod is hinged to the left valve flap, and the left scraper is driven by the left connecting rod to move along the slide rails when the left valve flap rotates around the rotating shaft.

3. The wafer type check valve of claim 2, wherein the right scraper assembly comprises a right scraper slidably connected between the two sliding grooves and contacting with the valve seat surface, and a right connecting rod having one end hinged to the right scraper and the other end hinged to the right valve flap, and the right scraper is driven by the right connecting rod to move along the sliding rail when the right valve flap rotates around the rotating shaft.

4. The wafer check valve of claim 3, wherein the right end of the left scraper is provided with a left scraping edge, and the left end of the right scraper is provided with a right scraping edge.

5. The wafer check valve of claim 3, wherein the left and right valve flaps are parallel to each other and a right end of the left scraper and a left end of the right scraper contact each other when the inlet tube is fully opened.

6. The wafer-type check valve of claim 1, wherein a stop is disposed in the inlet tube parallel to the axis of rotation, wherein the right end of the left flap presses against the stop when the left flap presses against the seat, and wherein the left end of the right flap presses against the stop when the right flap presses against the seat.

Technical Field

The invention belongs to the technical field of pipeline valves, and particularly relates to a wafer check valve.

Background

With the development of pipeline valves, wafer check valves have been widely used in pipeline systems. The wafer check valve mainly comprises a valve body, valve clacks, a rotating shaft, a fixed shaft, a torsion spring and other parts, and when the valve is used, a positive flow medium can push the two valve clacks to rotate and be folded together, so that the valve is in an open state; when the medium flows backwards, the two valve clacks can be unfolded to form a whole circle, the valve is closed at the moment, and the medium in the pipeline system is difficult to avoid impurities, so that the phenomenon that the impurities are adsorbed on the sealing surface of the valve seat can often occur in the opening and closing process of the wafer type check valve, the check valve is caused to leak, the sealing surface is damaged, and the service life of the check valve is greatly shortened.

Disclosure of Invention

The invention aims to provide a wafer type check valve which not only has simple structure, but also can remove impurities on the valve seat surface.

In order to achieve the purpose, the invention provides the following technical scheme:

a wafer type check valve comprises a valve body, wherein a valve cavity is arranged in the valve body, a valve cover is fixedly installed at an opening of the valve cavity, an inlet pipe communicated with the valve cavity is arranged on the side face, opposite to the valve cover, of the valve body, an outlet pipe communicated with the valve cavity is arranged on the valve cover, and the inlet pipe and the outlet pipe are coaxially arranged; a valve seat surface is arranged on the outer side of the inlet pipe in the valve cavity; a rotating shaft is arranged in the valve cavity of the valve cavity along the axial direction perpendicular to the inlet pipe, a left valve clack and a right valve clack are hinged to the rotating shaft, a torsion spring used for forcing the left valve clack and the right valve clack to press the valve seat surface is sleeved on the rotating shaft, and the inlet pipe is blocked when the left valve clack and the right valve clack are tightly pressed on the valve seat surface; slide rails are arranged on the upper side and the lower side of the inlet pipe on the inner end face of the valve cavity; be equipped with the left scraper subassembly of being connected with left valve clack between two tracks in the left side of import pipe, be equipped with the right scraper subassembly of being connected with right valve clack on the right side of import pipe, open when leaving the disk seat face at left valve clack, left valve clack drives left scraper subassembly and cleans left disk seat face, and when right valve clack left disk seat face, right valve clack drives right scraper subassembly and cleans the disk seat face on right side.

Further, all be equipped with the just right spout in position on two slide rails, left side scraper component includes left scraper blade and left connecting rod, left side scraper blade sliding connection between two spouts and with the disk seat contact, the one end of left side connecting rod articulates on left scraper blade, the other end articulates on left valve clack, when left valve clack revolutes the rotation of axes, drives left scraper blade through left connecting rod and is moving along the slide rail.

Further, right scraper blade subassembly includes right scraper blade and right connecting rod, right scraper blade sliding connection between two spouts and with the contact of valve seat face, the one end of right connecting rod articulates on right scraper blade, the other end articulates on right valve clack, when right valve clack revolutes the rotation of axes, drives right scraper blade through right connecting rod and is moving along the slide rail.

Furthermore, the right end of the left scraper blade is provided with a left scraping edge, and the left end of the right scraper blade is provided with a right scraping edge.

Further, when the inlet pipe is fully opened, the left valve clack and the right valve clack are parallel to each other, and the right end of the left scraper blade is in contact with the left end of the right scraper blade.

Furthermore, be equipped with the fender post along being on a parallel with the pivot direction in the inlet tube, when left valve clack compresses tightly on the disk seat face, the right-hand member of left valve clack compresses tightly on the fender post, and when right valve clack compresses tightly on the disk seat face, the left end of right valve clack compresses tightly on the fender post.

Advantageous effects

Compared with the prior art, the technical scheme of the invention has the following advantages:

(1) through the arrangement of the left scraper and the right scraper, impurities adsorbed on the valve seat surface are scraped after the check valve is opened and before the check valve is closed, so that the service life of the sealing surface is prolonged;

(2) through the arrangement of the left scraper and the right scraper, impurities adsorbed on the valve seat surface are scraped after the check valve is opened and before the check valve is closed, so that the left valve clack and the right valve clack can be completely attached when being pressed on the valve seat surface, and the sealing effect is better;

(3) the left scraper blade is connected with the left valve clack through the left connecting rod, the right scraper blade is connected with the right valve clack through the right connecting rod, the left valve clack and the right valve clack directly drive the left scraper blade and the right scraper blade to work when being opened, the cleaning is automatic, and the cleaning is convenient and fast.

Drawings

FIG. 1 is a sectional view of the present invention at the time of shutdown;

FIG. 2 is a sectional view taken along line B-B of the present invention at the time of stopping;

FIG. 3 is a sectional view taken along the line C-C when the present invention is stopped;

FIG. 4 is a cross-sectional view of the valve port of the present invention open;

FIG. 5 is a sectional view taken along the direction D-D when the valve port of the present invention is opened;

FIG. 6 is a sectional view taken in the direction E-E when the valve port of the present invention is open;

FIG. 7 is a structural view of the left squeegee of the invention;

FIG. 8 is a structural view of the right blade of the present invention.

Detailed Description

Referring to fig. 1-8, a wafer check valve includes a valve body 1, a valve cavity 101 is disposed in the valve body 1, a valve cover 1a is fixedly mounted at an opening of the valve cavity 101, an inlet pipe 1b communicated with the valve cavity 101 is disposed on a side of the valve body 1 opposite to the valve cover 1a, an outlet pipe 1c communicated with the valve cavity 101 is disposed on the valve cover 1a, and the inlet pipe 1b and the outlet pipe 1c are coaxially disposed; a valve seat surface is arranged on the outer side of the inlet pipe 1b in the valve cavity 101; a rotating shaft 4 is axially arranged in the valve cavity 101 of the valve cavity 101 along a direction perpendicular to the inlet pipe 1b, a left valve clack 2 and a right valve clack 3 are hinged to the rotating shaft 4, a torsion spring 7 for forcing the left valve clack 2 and the right valve clack 3 to press a valve seat surface is sleeved on the rotating shaft 4, and the inlet pipe 1b is blocked when the left valve clack 2 and the right valve clack 3 are pressed on the valve seat surface; slide rails 8 are arranged on the upper side and the lower side of the inlet pipe 1b on the inner end surface of the valve cavity 101; be equipped with the left scraper subassembly of being connected with left valve clack 2 in the left side of import pipe 1b between two tracks, be equipped with the right scraper subassembly of being connected with right valve clack 3 on the right side of import pipe 1b, open at left valve clack 2 and leave the disk seat face-time, left valve clack 2 drives left scraper subassembly and cleans left disk seat face, and right valve clack 3 drives right scraper subassembly and cleans the disk seat face on right side when leaving the disk seat face-time at right valve clack 3.

All be equipped with the just right spout 8a in position on two slide rails 8, left scraper component includes left scraper blade 5a and left connecting rod 6a, left side scraper blade 5a sliding connection between two spout 8a and with the contact of disk seat face, left side connecting rod 6 a's one end articulates on left scraper blade 5a, the other end articulates on left valve clack 2, when left valve clack 2 revolutes 4 rotations, drives left scraper blade 5a along the motion of slide rail 8 through left connecting rod 6 a. The right scraper component comprises a right scraper 5b and a right connecting rod 6b, the right scraper 5b is connected between two sliding grooves 8a in a sliding manner and is in contact with the valve seat surface, one end of the right connecting rod 6b is hinged to the right scraper 5b, the other end of the right connecting rod is hinged to the right valve clack 3, and when the right valve clack 3 rotates around a rotating shaft 4, the right scraper 5b is driven by the right connecting rod 6b to move along a sliding rail 8. The right end of the left scraper 5a is provided with a left scraping edge 5a1, and the left end of the right scraper 5b is provided with a right scraping edge 5b 1. When the inlet pipe 1b is fully opened, the left and right valve flaps 2 and 3 are parallel to each other, and the right end of the left scraper 5a and the left end of the right scraper 5b are in contact with each other.

Import pipe 1b is interior to be equipped with along being on a parallel with 4 directions of pivot and keeps off post 1d, and when left valve clack 2 compressed tightly on the disk seat face, the right-hand member of left valve clack 2 compressed tightly on keeping off post 1d, and when right valve clack 3 compressed tightly on the disk seat face, the left end of right valve clack 3 compressed tightly on keeping off post 1 d.

When the wafer check valve works, a medium in a pipeline flows to an outlet pipe 1c from an inlet pipe 1b, the medium pushes a left valve clack 2 and a right valve clack 3 to overcome the elasticity of a torsion spring 7 and turn over around a rotating shaft 4, the inlet pipe 1b is opened, the left valve clack 2 is connected with a left scraper 5a through a left connecting rod 6a, the right valve clack 3 is connected with a right scraper 5b through a right connecting rod 6b, the left scraper 5a and the right scraper 5b are matched with two sliding rails 8 and slide in two sliding grooves 8a along the horizontal direction, so that the left scraper 5a and the right scraper 5b are driven to slide towards each other and fold when the left valve clack 2 and the right valve clack 3 are turned over and opened, impurities adsorbed on a valve seat surface are scraped off in the sliding and folding process of the left scraper 5a and the right scraper 5b, a left scraping edge 5a1 is arranged at the right end of the left scraper 5a, a right scraping edge 5b is, so that the valve seat surface cannot be completely cleaned by the foreign matter being sandwiched between the left blade 5a and the right blade 5 b.

When a medium flows to the inlet pipe 1b from the outlet pipe 1c, the left valve clack 2 and the right valve clack 3 rotate under the pushing of the torsion spring 7 and the medium, the torsion spring 7 and the medium are pressed on the valve seat surface to cover the inlet pipe 1b, and the stopping is completed, in the rotating process of the left valve clack 2 and the right valve clack 3, because the left valve clack 2 is connected with the left scraper 5a through the left connecting rod 6a, the right valve clack 3 is connected with the right scraper 5b through the right connecting rod 6b, the left scraper 5a and the right scraper 5b are matched with the two sliding rails 8, and the left valve clack 2 and the right valve clack 3 slide in the horizontal direction in the two sliding grooves 8a, the left scraper 5a and the right scraper 5b are driven to move backwards when the left valve clack 2 and the right valve clack 3 are turned to be closed, impurities adsorbed on the valve seat surface are scraped, so.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the technical principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.