CN211145385U

CN211145385U - Stop valve casting

Info

Publication number: CN211145385U
Application number: CN201922096656.9U
Authority: CN
Inventors: 罗贤龙; 季知燕; 乐勇明; 林杰
Original assignee: Zhejiang Lin Jia Changlong Valve Casting Co ltd
Current assignee: ZHEJIANG COTECH VALVE Co.,Ltd.
Priority date: 2019-11-29
Filing date: 2019-11-29
Publication date: 2020-07-31
Anticipated expiration: 2029-11-29

Abstract

The utility model relates to a valve casting, in particular to a stop valve casting, including valve body, valve gap and the valve rod that the cooperation set up, the axle center department cooperation of valve body and valve gap is equipped with the valve rod through-hole, be equipped with the valve pocket in the valve body, the valve body lateral part corresponds respectively and is equipped with into liquid mouth and liquid outlet, be equipped with first valve plate, second valve plate in the valve pocket, the one end of first valve plate and second valve plate sets up on the inner wall of valve pocket, be equipped with the valve opening between the other end of first valve plate and second valve plate, the valve opening sets up with horizontal plane parallel; the sealing block is arranged at the joint of the valve hole and the valve plate, so that the sealing performance of a sealing surface is better ensured, the safety of a pipeline is ensured, and the daily operation is normally carried out; through the balance mechanism who sets up on the valve gap, can effectually fix the valve gap, guarantee that the valve gap does not take place the skew, the valve gap of gate valve foundry goods is in under the balanced condition of supporting, and the valve rod is complete centering with the valve body, and the variation reduces, and sealing performance promotes greatly.

Description

Stop valve casting

Technical Field

The utility model relates to a valve casting, in particular to stop valve casting.

Background

The stop valve, also called stop valve, is one of the most widely used valves, and is popular because of the small friction force between the sealing surfaces in the opening and closing process, the durability, the small opening height, the easy manufacture, the convenient maintenance, and not only suitable for the middle and low pressure, but also suitable for the high pressure.

In the prior art, most stop valves are forcedly sealed, namely, when a valve is closed, a valve plate is forced to press against a valve seat by means of external force, so that the sealing performance of a sealing surface is ensured, and therefore, a valve rod through hole of the valve plate needs to be very careful when casting finish machining is carried out, the yield is not high, and the valve rod through hole is frequently in a high-strength working state during working, so that the valve rod through hole is easily subjected to strain, the valve rod through hole is deformed, even cracks and the like, the sealing performance of the sealing surface cannot be ensured, even pipeline leakage and the like can occur, and normal operation is influenced; and improper valve gap supports and can cause the valve rod and the disk seat of gate valve can not the centering, makes the variation increase, and sealing performance descends.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the problems that, in the prior art, when the valve is closed, the valve plate is forced to be pressed to the valve seat by external force, the sealing performance of the sealing surface is ensured, which leads to that the valve rod through hole of the valve plate must be very careful when the casting is processed by finish machining, the yield is not high, and the valve rod through hole is constantly in a high-strength working state when working, which easily leads to the strain of the valve rod through hole for a long time, the deformation of the valve rod through hole and even the cracks occur, the sealing performance of the sealing surface can not be ensured, even the leakage of the pipeline can occur, and the normal operation is influenced; and improper valve gap supports can cause the valve rod and the disk seat of gate valve can not the centering, makes the variation increase, problem such as sealing performance decline.

The technical scheme adopted by the utility model is that, a stop valve casting is provided, including valve body, valve gap and valve rod that the cooperation set up, the axle center department cooperation of valve body and valve gap is equipped with the valve rod through-hole, be equipped with the valve pocket in the valve body, the valve body lateral part corresponds respectively and is equipped with into liquid mouth and liquid outlet, be equipped with first valve plate, second valve plate in the valve pocket, first valve plate and second valve plate and horizontal plane form angle and parallel arrangement, one end of first valve plate and second valve plate sets up on the inner wall of valve pocket, be equipped with the valve opening between the other end of first valve plate and second valve plate, the valve opening is with horizontal plane parallel arrangement, the junction of valve opening and first valve plate and second valve plate is equipped with the seal block; and the middle part of the valve cover is provided with a balance mechanism.

Preferably, the valve hole top-down includes inclined hole section and round hole section, sealed piece is equipped with first inclined plane and straight face towards one side correspondence of valve hole, first inclined plane and straight face respectively with inclined hole section and round hole section cooperation setting.

Preferably, one side of the sealing block, which is back to the valve hole, is provided with a second inclined plane, and the second inclined plane is parallel to the first inclined plane.

Preferably, the included angle between the first inclined plane and the horizontal plane is 45-75 degrees.

Preferably, the balance mechanism comprises a plurality of balance blocks, any balance block is integrally in an inverted trapezoidal table shape, and the balance blocks are symmetrically arranged around the central axis of the valve body.

Preferably, any one of the balance weights is provided with a positioning hole for arranging the balance weight.

Preferably, the bottom edge of valve gap is equipped with the bulge loop, and the top edge of valve body is equipped with the recess, the outer fringe of bulge loop and the inner wall laminating setting of recess.

Preferably, a sealing layer is arranged between the outer edge of the raised ring and the inner wall of the groove.

Preferably, the outer side of the valve rod is provided with an elastic sleeve through threads, and the outer surface of the elastic sleeve is provided with a compression adjusting sleeve.

Preferably, the connection surfaces of the first valve plate, the second valve plate and the inner wall of the valve body are cambered surfaces.

The utility model provides a stop valve casting with an optimized structure, which better ensures the sealing performance of a sealing surface and ensures the safety of a pipeline by arranging a sealing block at the joint of a valve hole and a valve plate, so that the daily operation is normally carried out; through the balance mechanism who sets up on the valve gap, can effectually fix the valve gap, guarantee that the valve gap does not take place the skew, the valve gap of gate valve foundry goods is in under the balanced condition of supporting, and the valve rod is complete centering with the valve body, and the variation reduces, and sealing performance promotes greatly.

Drawings

Fig. 1 is a schematic structural view of a stop valve casting according to the present invention;

fig. 2 is an enlarged view of a portion a.

Detailed Description

The technical solution of the present invention is further specifically described below by way of specific embodiments and with reference to the accompanying drawings.

As shown in fig. 1-2, the utility model relates to a stop valve casting, including valve body 1, valve gap 2 and the valve rod 3 that the cooperation set up, the axle center department cooperation of valve body 1 and valve gap 2 is equipped with valve rod through-hole 4, be equipped with valve pocket 5 in the valve body 1, the lateral part of valve body 1 corresponds respectively and is equipped with into liquid mouth 6 and liquid outlet 7, be equipped with first valve plate 8, second valve plate 9 in the valve pocket 5, first valve plate 8 and second valve plate 9 are the angle and parallel arrangement with the horizontal plane, the one end of first valve plate 8 and second valve plate 9 sets up on the inner wall of valve pocket 5, be equipped with valve opening 10 between the other end of first valve plate 8 and second valve plate 9, valve opening 10 and horizontal plane parallel arrangement, the junction of valve opening 10 and first valve plate 8 and second valve plate 9 is equipped with sealing block 11; the middle part of the valve cover 2 is provided with a balance mechanism 12.

The utility model discloses in, valve rod 3 passes in the valve rod through-hole 4, but the bottom is connected be equipped with valve opening 10 complex valve plate for the medium flow in the control valve body 1.

As shown in fig. 2, the valve hole 10 includes an inclined hole section 101 and a circular hole section 102 from top to bottom, a first inclined surface 111 and a straight surface 112 are correspondingly disposed on one side of the sealing block 11 facing the valve hole 10, and the first inclined surface 111 and the straight surface 112 are respectively disposed in cooperation with the inclined hole section 101 and the circular hole section 102.

The utility model discloses in, sealed piece 11 can realize that the line is sealed when valve plate and valve opening 10 mutual contact, and sealing performance is better.

The utility model discloses in, sealed piece 11 can cushion the huge impact force that the valve plate was impressed suddenly and is brought.

The utility model discloses in, the valve opening 10 processing degree of difficulty that sealed piece 11 and segmentation set up is less.

The utility model discloses in, as an embodiment, sealed piece 11 is sealed piece 11 firmly, can adopt hard metal materials such as steel, alloy, high temperature resistant, resistance to wear, and mechanical properties is good.

The utility model discloses in, as another kind of embodiment, sealed piece 11 is soft sealed piece 11, can adopt elastic non-metallic material such as rubber, and sealing performance is good.

In the present invention, the material of the sealing block 11 can be set by the technicians in the field according to the specific requirements.

One side of the sealing block 11, which faces away from the valve hole 10, is provided with a second inclined surface 113, and the second inclined surface 113 is arranged in parallel with the first inclined surface 111.

The utility model discloses in, second inclined plane 113 and first inclined plane 111 can bear and come from the oblique pressure, and straight face 112 can bear and come from horizontal pressure, prolongs the life of valve body 1, reduce cost.

The included angle between the first inclined plane 111 and the horizontal plane and the included angle between the second inclined plane 113 and the horizontal plane are 45-75 degrees.

The utility model discloses in, the embodiment that provides is first inclined plane 111 and second inclined plane 113 and the contained angle of horizontal plane 60, and the stress surface is for stabilizing the regular triangle structure this moment, stable in structure, and valve opening 10 is difficult to the fracture, prolongs the life of valve body 1, reduce cost.

The balance mechanism 12 includes a plurality of balance blocks 121, any balance block 121 is integrally in an inverted trapezoidal shape, and the balance blocks 121 are symmetrically arranged with respect to a central axis of the valve body 1.

A positioning hole 122 for arranging the balance weight is provided in any of the balance weights 121.

In the utility model, the balance blocks 121 are symmetrically arranged around the central axis of the valve body 1, two positioning holes 122 are symmetrically arranged on any balance block 121, and the balance block 121 can ensure that the valve cover 2 is in a balanced state, so as to prevent the valve cover 2 from inclining, and prevent the valve rod 3 and the valve seat from being incompletely aligned, and causing deviation and unnecessary loss; the positioning hole 122 plays a role of fixing the balance weight 121, and the smooth processing is ensured.

The bottom edge of valve gap 2 is equipped with bulge loop 13, and the top edge of valve body 1 is equipped with recess 14, the outer fringe of bulge loop 13 and the inner wall laminating setting of recess 14.

And a sealing layer 15 is arranged between the outer edge of the convex ring 13 and the inner wall of the groove 14.

The utility model discloses in, the outer fringe of bulge loop 13 and the inner wall laminating setting of recess 14 increase the leakproofness.

The utility model discloses in, sealing layer 15 generally adopts flexible graphite sealing ring, and this graphite sealing ring has characteristics such as the leakproofness is good, corrosion-resistant, high strength, wear-resisting for valve body 1 and 2 leakproofness of valve gap are good, more durable.

The outer side of the valve rod 3 is provided with an elastic sleeve 16 through threads, and the outer surface of the elastic sleeve 16 is provided with a pressing adjusting sleeve 17.

The utility model discloses in, compress tightly the adjustable pretightning force of adjusting collar 17.

In the utility model, the connection surfaces of the first valve plate 8, the second valve plate 9 and the inner wall of the valve body 1 are cambered surfaces; the valve body 1 has large wall thickness and high strength, and can avoid tube explosion.

The utility model discloses in, the 4 outsides of the valve rod through-hole on the valve gap 2 are equipped with strengthening rib 18, the valve rod through-hole 4 of guaranteeing valve gap 2 is fixing a position and consolidating strengthening rib 18 when carrying out foundry goods finish machining, the processing is handled and is changeed the completion, product yield is high, valve rod through-hole 4 is consolidated by strengthening rib 18 when valve rod through-hole 4 is under the high strength operating condition, reduce 1 strain of valve body, valve rod through-hole 4 non-deformable, the crack also can not appear, the better leakproofness of guaranteeing the sealed face, the safety of guarantee pipeline, make daily operation normally develop.

The utility model provides a stop valve casting with an optimized structure, which better ensures the sealing performance of a sealing surface and ensures the safety of a pipeline by arranging a sealing block 11 at the joint of a valve hole 10 and a valve plate, so that the daily operation can be normally carried out; through the balance mechanism 12 that sets up on valve gap 2, can effectually fix valve gap 2, guarantee that valve gap 2 does not take place the skew, under the valve gap 2 of gate valve foundry goods was in the balanced condition of supporting, valve rod 3 and valve body 1 centering completely, and the variation reduces, and sealing performance promotes greatly.

Claims

1. The utility model provides a stop valve foundry goods, includes valve body, valve gap and the valve rod that the cooperation set up, its characterized in that: the valve comprises a valve body, a valve cover and a valve cavity, wherein the valve body is provided with a valve rod through hole at the axis, the valve body is internally provided with the valve cavity, the side part of the valve body is respectively and correspondingly provided with a liquid inlet and a liquid outlet, the valve cavity is internally provided with a first valve plate and a second valve plate, the first valve plate and the second valve plate form an angle with the horizontal plane and are arranged in parallel, one end of the first valve plate and one end of the second valve plate are arranged on the inner wall of the valve cavity, a valve hole is arranged between the other end of the first valve plate and the other end of the second valve plate, the valve hole is arranged in parallel with the horizontal plane; and the middle part of the valve cover is provided with a balance mechanism.

2. A stop valve casting according to claim 1, wherein: the valve hole top-down includes inclined hole section and round hole section, sealed piece is equipped with first inclined plane and straight face towards one side correspondence of valve hole, first inclined plane and straight face set up with inclined hole section and round hole section cooperation respectively.

3. A stop valve casting according to claim 2, wherein: one side of the sealing block back to the valve hole is provided with a second inclined plane which is arranged in parallel with the first inclined plane.

4. A stop valve casting according to claim 3, wherein: the included angle between the first inclined plane and the horizontal plane is 45-75 degrees.

5. A stop valve casting according to claim 1, wherein: the balance mechanism comprises a plurality of balance blocks, any balance block is integrally in an inverted trapezoidal platform shape, and the balance blocks are symmetrically arranged with the central axis of the valve body.

6. A stop valve casting according to claim 5, wherein: any one of the balance blocks is provided with a positioning hole for arranging the balance block.

7. A stop valve casting according to claim 1, wherein: the bottom edge of valve gap is equipped with the bulge loop, and the top edge of valve body is equipped with the recess, the outer fringe of bulge loop and the inner wall laminating of recess set up.

8. A stop valve casting according to claim 7, wherein: and a sealing layer is arranged between the outer edge of the raised ring and the inner wall of the groove.

9. A stop valve casting according to claim 1, wherein: the outer side of the valve rod is provided with an elastic sleeve through threads, and the outer surface of the elastic sleeve is provided with a pressing adjusting sleeve.

10. A stop valve casting according to claim 1, wherein: the connection surfaces of the first valve plate, the second valve plate and the inner wall of the valve body are cambered surfaces.