CN219639553U

CN219639553U - Rotary-opening check valve with filtering function

Info

Publication number: CN219639553U
Application number: CN202321371723.3U
Authority: CN
Inventors: 陈金城; 陈军龙
Original assignee: Dexon Tianjin Automatic Control Valve Co ltd
Current assignee: Dexon Tianjin Automatic Control Valve Co ltd
Priority date: 2023-06-01
Filing date: 2023-06-01
Publication date: 2023-09-05
Anticipated expiration: 2033-06-01

Abstract

The utility model discloses a swing check valve with a filtering function, which comprises a valve body, wherein flanges are fixedly connected to two ends of the valve body, an inner cavity is formed in the middle of the valve body, fixed blocks are fixedly connected to two sides of the upper side of the inner cavity, bolts are fixedly connected to the upper side of the fixed blocks, support rods are rotatably connected to the upper side of the bolts, a first sealing gasket is fixedly connected to the upper end of the inner cavity, a valve cover is arranged on the upper side of the first sealing gasket, a filter screen is fixedly connected to the right side of the inner cavity, a liquid outlet is fixedly connected to the right side of the filter screen, a valve plate is arranged on the left side of the inner cavity, a valve seat is arranged on the left side of the valve plate, a liquid inlet is fixedly connected to the left side of the valve seat, and the valve body comprises a liquid inlet, a liquid outlet and a groove. According to the utility model, the baffle plate is arranged at the upper part of the inner cavity, the valve plate slowly falls under the action of the tension of the buffer spring, and impurities in the flowing medium are filtered through the added filter screen.

Description

Rotary-opening check valve with filtering function

Technical Field

The utility model relates to the technical field of valve plate structures, in particular to a swing check valve with a filtering function.

Background

The check valve is a valve plate for preventing the reverse flow of the medium, also called a check valve, a one-way valve, a reverse flow valve, and a back pressure valve, which automatically opens and closes a valve flap depending on the flow of the medium itself. The check valve is an automatic valve plate and has the main functions of preventing the medium from flowing backwards, preventing the reverse rotation of the pump and the driving motor and preventing the medium in the container from leaking. The swing check valve is suitable for pipelines with the working temperature of-29 to +550 degrees under the working conditions of PN1.6 to 16.0MPa, such as petroleum, chemical industry, pharmacy, chemical fertilizer, electric power industry and the like, and suitable mediums are water, oil products, steam, acid mediums and the like.

When the medium in the pipeline flows forward, the medium can not be doped with impurities, the liquid can be influenced or the medium can be used, the valve clack is opened under the action of the medium force, and when the medium is stopped to be input, the valve clack is automatically closed due to the gravity of the valve clack and other factors so as to prevent the medium from flowing backwards. The valve clack often can strike the valve body when rotatory whereabouts, can cause destruction and loss to valve body and valve clack in the past for a long time, reduces the life of valve plate.

Disclosure of Invention

The utility model aims to solve the defects in the prior art and provides a swing check valve with a filtering function.

In order to achieve the above purpose, the present utility model adopts the following technical scheme: the utility model provides a take filtering capability's swing check valve, includes the valve body, valve body both ends fixedly connected with flange, the valve body middle part is provided with the inner chamber, inner chamber upside both sides fixedly connected with fixed block, left side fixed block upside fixedly connected with bolt, the bolt upside rotates and is connected with the bracing piece, inner chamber upper end fixedly connected with first gasket seal, first gasket seal upside is provided with the valve gap, inner chamber right side fixedly connected with filter screen, filter screen right side fixedly connected with liquid outlet, the inner chamber left side is provided with the valve plate, the valve plate left side is provided with the disk seat, disk seat left side fixedly connected with inlet, the valve body includes inlet, liquid outlet and recess.

As a further description of the above technical solution:

the left side the flange left end is provided with the inlet, and the right side the flange right-hand member is provided with the liquid outlet.

As a further description of the above technical solution:

the middle part of the fixed block on the left side is fixedly connected with a baffle.

As a further description of the above technical solution:

the lower end of the supporting rod is provided with a threaded hole and the threaded hole is in rotary fit with the second nut, the middle part of the valve plate is provided with the threaded hole and the threaded hole is in rotary fit with the second nut, and the supporting rod is arc-shaped.

As a further description of the above technical solution:

the outer side of the valve plate is fixedly connected with a second sealing gasket through a screw.

As a further description of the above technical solution:

the valve cover is characterized in that a threaded hole is formed in the upper side edge of the valve cover and is in rotary fit with the first nut, a threaded hole is formed in the corresponding position of the first sealing gasket and is in rotary fit with the first nut and the gasket, and the top end of the valve cover is arc-shaped.

As a further description of the above technical solution:

the upper side and the lower side of the top end of the supporting rod are fixedly connected with buffer springs, and the other ends of the two buffer springs are fixedly connected with fixing blocks.

As a further description of the above technical solution:

the first sealing gasket and the second sealing gasket are made of carbon steel surfacing iron-based alloy.

As a further description of the above technical solution:

the filter screen both ends fixedly connected with buckle just the buckle cooperatees with the recess.

The utility model has the following beneficial effects:

1. according to the utility model, the baffle plate is arranged at the upper part of the inner cavity, and the valve plate slowly falls under the action of the tension of the buffer spring, so that the valve body is prevented from being impacted by a large force, and the service life of the valve body is prolonged.

2. According to the utility model, impurities in the flowing medium are filtered out through the added filter screen, so that the influence on the subsequent use and performance of the liquid is avoided, and the buckles are arranged at the two ends of the filter screen, so that the filter screen is convenient to detach and replace.

Drawings

FIG. 1 is a front view of a swing check valve with filtering function according to the present utility model;

FIG. 2 is a side view of a swing check valve with filtering function according to the present utility model;

FIG. 3 is an enlarged view of FIG. 1 at A;

fig. 4 is an enlarged view at B in fig. 1.

Legend description:

1. a flange; 2. a valve body; 3. a valve cover; 4. a first nut; 5. a first sealing gasket; 6. an inner cavity; 7. a bolt; 71. a fixed block; 72. a buffer spring; 8. a baffle; 9. a support rod; 10. a second nut; 11. a valve seat; 12. a valve plate; 13. a second sealing gasket; 14. a filter screen; 15. a liquid inlet; 16. a liquid outlet; 17. a buckle; 18. a groove.

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.

In the description of the present utility model, it should be noted that, directions or positional relationships indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., are based on directions or positional relationships shown in the drawings, are merely for convenience of description and simplification of description, and do not indicate or imply that the apparatus or element to be referred to must have a specific direction, be constructed and operated in the specific direction, and thus should not be construed as limiting the present utility model; the terms "first," "second," "third," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance, and furthermore, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "coupled," and the like are to be construed broadly, and may be fixedly coupled, detachably coupled, or integrally coupled, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

Referring to fig. 1-4, one embodiment of the present utility model is provided: the utility model provides a take filtering capability's swing check valve, including valve body 2, valve body 2 both ends fixedly connected with flange 1, flange 1 passes through screw fixed connection outside trunk line, valve body 2 middle part is provided with inner chamber 6, inner chamber 6 upside both sides fixedly connected with fixed block 71, left side fixed block 71 upside fixedly connected with bolt 7, bolt 7 upside rotates and is connected with bracing piece 9, when the medium gets into through inlet 15, valve plate 12 is washed out to the pressure of medium itself, bracing piece 9 of fixed connection on valve plate 12 rotates in bolt 7 positions, thereby make valve plate 12 upwards do circular motion with bolt 7 as the centre of a circle, inner chamber 6 upper end fixedly connected with first sealing gasket 5, first sealing gasket 5 upside is provided with valve gap 3, the leakproofness of reinforcing whole check valve prevents that the medium from revealing when flowing, inner chamber 6 right side fixedly connected with filter screen 14, filter screen 14 right side fixedly connected with liquid outlet 16, impurity in the filter out the medium, avoid impurity to bring the influence to the performance of medium itself and the use, inner chamber 6 left side is provided with valve plate 12, valve plate 12 left side is provided with valve seat 11, valve seat 11 left side fixedly connected with 15, valve seat 11 left side fixedly connected with inlet 2, liquid inlet 16, valve body 18 and valve body 18.

The left flange 1 left end is provided with inlet 15, the right flange 1 right-hand member is provided with liquid outlet 16, left side fixed block 71 middle part fixedly connected with separation blade 8, when the medium flows into and dashes and open valve plate 12, valve plate 12 right side can laminate separation blade 8, avoid bumping valve body 2, the bracing piece 9 lower extreme is provided with the screw hole and the rotatory cooperation of second nut 10, valve plate 12 middle part sets up screw hole and the rotatory cooperation of second nut 10, bracing piece 9 is the arc, the valve plate 12 outside is through screw fixedly connected with second seal gasket 13, be provided with screw hole and first nut 4 rotatory cooperation on the valve gap 3 upper side, first seal gasket 5 corresponds the position also be provided with screw hole and with first nut 4 rotatory cooperation, valve gap 3 top is the arc, both sides fixedly connected with buffer spring 72 and two buffer spring 72 other end fixed block 71 about the bracing piece 9 top, the medium flows out valve plate 12 and relies on gravity to use the centre of a circle down to do circular motion with the bolt 7, the buffer spring 72 extension of this moment, produce a pulling force to bracing piece 9 top side, make the bracing piece 12 fall speed, first seal gasket 5, it blocks up the filter screen 17, the filter screen 17 is replaced to be convenient for the filter screen 17, the filter screen is fixed to be replaced with the top alloy, the filter screen 17, the filter screen is replaced and is replaced by the filter screen 17, the filter screen 17 is convenient to be connected with the filter screen 17, the filter screen is replaced and the filter screen 17 is replaced by the filter screen 17, the filter screen 17 is replaced by the filter screen 17 is replaced.

Working principle: before working, the air tightness of the whole check valve is checked, the flange 1 is connected to an external pipeline, liquid enters the check valve from the liquid inlet 15, the valve plate 12 is flushed by the flowing pressure of the liquid, the support rod 9 fixedly connected to the valve plate 12 through the second nut 10 rotates on the bolt 7, the valve plate 12 is opened, after the rightmost end of the valve plate 12 is connected to the baffle 8, the support rod 9 does not rotate any more, the liquid flows into the inner cavity 6, the liquid filtered out of impurities by the filter screen 14 on the right side of the inner cavity 6 flows into the main pipeline from the liquid outlet 16, after the liquid flows, the valve plate 12 is closed under the influence of gravity, slowly falls under the action of the pulling force of the buffer spring 72, and the filter screen 14 can be replaced by opening the valve cover 3.

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 a take filtering capability's swing check valve, includes valve body (2), its characterized in that: valve body (2) both ends fixedly connected with flange (1), valve body (2) middle part is provided with inner chamber (6), inner chamber (6) upside both sides fixedly connected with fixed block (71), the left side fixed block (71) upside fixedly connected with bolt (7), bolt (7) upside rotates and is connected with bracing piece (9), inner chamber (6) upper end fixedly connected with first sealing gasket (5), first sealing gasket (5) upside is provided with valve gap (3), inner chamber (6) right side fixedly connected with filter screen (14), filter screen (14) right side fixedly connected with liquid outlet (16), inner chamber (6) left side is provided with valve plate (12), valve plate (12) left side is provided with disk seat (11), disk seat (11) left side fixedly connected with inlet (15), valve body (2) are including inlet (15), liquid outlet (16) and recess (18).

2. The swing check valve with filtering capability of claim 1, wherein: the left end of the flange (1) on the left side is provided with a liquid inlet (15), and the right end of the flange (1) on the right side is provided with a liquid outlet (16).

3. The swing check valve with filtering capability of claim 1, wherein: the middle part of the fixed block (71) on the left side is fixedly connected with a baffle (8).

4. The swing check valve with filtering capability of claim 1, wherein: the lower end of the supporting rod (9) is provided with a threaded hole and the threaded hole is in rotary fit with the second nut (10), the middle part of the valve plate (12) is provided with the threaded hole and the threaded hole is in rotary fit with the second nut (10), and the supporting rod (9) is arc-shaped.

5. The swing check valve with filtering capability of claim 1, wherein: the outer side of the valve plate (12) is fixedly connected with a second sealing gasket (13) through a screw.

6. The swing check valve with filtering capability of claim 1, wherein: the novel valve cover is characterized in that a threaded hole is formed in the upper side edge of the valve cover (3) and is in rotary fit with the first nut (4), a threaded hole is formed in the corresponding position of the first sealing gasket (5) and is in rotary fit with the first nut (4), and the top end of the valve cover (3) is arc-shaped.

7. The swing check valve with filtering capability of claim 1, wherein: buffer springs (72) are fixedly connected to the upper side and the lower side of the top end of the supporting rod (9), and the other ends of the two buffer springs (72) are fixedly connected with a fixed block (71).

8. The swing check valve with filtering capability of claim 1, wherein: the first sealing gasket (5) and the second sealing gasket (13) are made of carbon steel surfacing iron-based alloy.

9. The swing check valve with filtering capability of claim 1, wherein: two ends of the filter screen (14) are fixedly connected with buckles (17) and the buckles (17) are matched with the grooves (18).