CN213839698U - High-pressure check valve - Google Patents

Abstract

The utility model discloses a high-pressure check valve, including the valve body, the valve body both ends are connected with first end cover and second end cover, and the wall ring is equipped with the ka tai in the valve body, are equipped with the baffle in the valve body, and the baffle outer fringe is equipped with many connecting rods, and one side that the baffle is close to the ka tai is provided with the base, has seted up first recess and annular on the base, is equipped with the spring in the first recess, is equipped with the sleeve in the annular, and the sleeve is connected with the dog, and the dog is in. The utility model has the advantages of reasonable design, bear the base in being fixed in the through-hole with the baffle through connecting rod and screw, through sleeve and spring coupling between base and the dog, guaranteed the reliability of dog position, the dog is in the same place with the ka tai butt under the effect of spring, need not the manual operation of people, and the spring is adjusted in time the dog according to the condition of pressure, avoids the emergence of the circumstances of refluence, convenient and fast.

Description

High-pressure check valve

Technical Field

The utility model belongs to the valve field especially relates to a high pressure check valve.

Background

Various pipelines are distributed in the production life of people, and the normal life of people needs to be prevented from being influenced by the backflow of fluid in the pipelines. The existing non-return device needs manual operation on the valve clack, is slow in reaction speed, cannot respond to the backflow situation in time, and causes waste of human resources.

SUMMERY OF THE UTILITY MODEL

In order to solve the above problems, the utility model provides a high-pressure check valve.

The utility model discloses a realize like this: a high-pressure check valve comprises a valve body, wherein one end of the valve body is fixedly connected with a first end cover, the other end of the valve body is fixedly connected with a second end cover, the valve body is connected with a pipeline through the first end cover and the second end cover, a through hole is formed in the center of the cross section of the first end cover, the valve body and the center of the cross section of the second end cover in sequence, fluid in the pipeline circulates through the through hole, a clamping table is arranged on a fixing ring at the joint of the inner wall of the valve body and the inner wall of the first end cover to limit the position of a stop block, a baffle is vertically arranged at the through hole in the valve body, a plurality of connecting rods are uniformly and fixedly arranged at the outer edge of the baffle, the baffle is fixed in the through hole through the connecting rods, a first threaded hole is formed in one end of the connecting rods, a plurality of second threaded holes are formed in the side wall of the valve body, the first threaded holes correspond to the second threaded holes, and hexagon socket countersunk head screws are sequentially arranged on the second threaded holes and the first threaded holes, the valve body is fixedly connected with the connecting rod through screws, so that the reliability of the position of the baffle is ensured, a base is fixedly arranged on one side of the baffle close to the clamping table, the positions of the spring and the sleeve are limited, a first groove is formed in the middle position of one end of the base, which is far away from the baffle, a spring is arranged in the first groove, an annular groove is formed in the base, which is positioned outside the first groove, a sleeve is arranged in the annular groove, one end, which is far away from the base, of the sleeve is fixedly connected with a stop block, a second groove is formed in the middle position of one side, which is close to the sleeve, of the stop block, the other end of the spring is arranged in the second groove, the position of the spring is limited through the first groove and the second groove, one end, which is far away from the sleeve, of the stop block is abutted against the clamping table, fluid flows into the through hole from the first end cover, and the pressure of the fluid is greater than the elastic force of the spring, the dog separates with the ka tai, and the one end that the dog was kept away from to the sleeve stretches into in the annular, and the spring is compressed, in the through-hole in the fluid admission valve body, then flow into the pipeline that is connected with the second end cap in the hole that follows baffle, valve body inner wall and connecting rod formed, reduces when fluid flow, and spring force is greater than fluid pressure, the spring promotes the dog and blocks the platform butt together, prevents the fluid refluence in the pipeline that is connected with the second end cap, is close to the overflow hole has been seted up on the sleeve lateral wall of dog, makes liquid circulate inside and outside the sleeve, avoids producing pressure differential between sleeve and the valve body, influences the operation of sleeve in the annular.

Preferably, evenly be provided with many guide rails on the inner wall of valve body and second end cover, the one end that the connecting rod deviates from the baffle sets up in the guide rail, is convenient for promote the assigned position with connecting rod and baffle, labour saving and time saving link together valve body and connecting rod through the screw.

Preferably, the stop block is in a circular truncated cone shape, a groove is formed in the joint of the clamping table and the stop block, the abutting surface of the stop block and the clamping table is enlarged, and gaps in the joint are reduced.

Preferably, one side of the clamping table, which is close to the first end cover, is obliquely arranged, so that the flowing fluency of fluid entering from the first end cover is increased, the resistance is reduced, the fluid is more easily pushed away from the stop block, one side of the clamping table, which is close to the valve body, is vertically arranged, and the clamping table is impacted with the vertical wall when the fluid flows backwards, so that the resistance when the fluid flows backwards is increased.

Preferably, the diameter of the end, close to the sleeve, of the stop block is larger than the inner diameter of the clamping table, and the diameter of the end, far away from the sleeve, of the stop block is smaller than the inner diameter of the clamping table, so that the stop block and the clamping table are reliably abutted together.

The utility model has the advantages that: the utility model has the advantages of reasonable design, bear the base in being fixed in the through-hole with the baffle through connecting rod and screw, through sleeve and spring coupling between base and the dog, guaranteed the reliability of dog position, the dog is in the same place with the ka tai butt under the effect of spring, need not the manual operation of people, and the spring is adjusted in time the dog according to the condition of pressure, avoids the emergence of the circumstances of refluence, convenient and fast.

Drawings

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

fig. 2 is a side view of the present invention at a second end cap;

in the figure: 1. a valve body; 2. a first end cap; 3. a second end cap; 4. a through hole; 5. clamping a platform; 6. a baffle plate; 7. a connecting rod; 8. a first threaded hole; 9. a second threaded hole; 10. a screw; 11. a base; 12. a first groove; 13. a spring; 14. a ring groove; 15. a sleeve; 16. a stopper; 17. a second groove; 18. an overflow aperture; 19. a guide rail; 20. and (4) beveling.

Detailed Description

In order to understand the technical solution of the present invention more clearly, the present invention will be further explained with reference to the accompanying drawings.

As shown in fig. 1 and 2, the high-pressure check valve comprises a valve body 1, wherein one end of the valve body 1 is fixedly connected with a first end cover 2, the other end of the valve body 1 is fixedly connected with a second end cover 3, the valve body 1 is connected with a pipeline through the first end cover 2 and the second end cover 3, a through hole 4 is formed in the center of the cross section of the first end cover 2, the center of the cross section of the valve body 1 and the center of the cross section of the second end cover 3, fluid in the pipeline flows through the through hole 4, a clamping table 5 is arranged on a fixing ring at the joint of the inner wall of the valve body 1 and the inner wall of the first end cover 2 to limit the position of a stop block 16, one side of the clamping table 5, which is close to the first end cover 2, is obliquely arranged to increase the smoothness of the fluid flowing from the first end cover 2, reduce backflow resistance, enable the fluid to be easier to the stop block 16, the clamping table 5 is vertically arranged close to one side of the valve body 1, and collides with a vertical wall when the fluid, so as to increase the resistance when the fluid is pushed open, a baffle 6 is vertically arranged at a through hole 4 positioned in the valve body 1, 4 connecting rods 7 are uniformly and fixedly arranged at the outer edge of the baffle 6, the baffle 6 is fixed in the through hole 4 through the connecting rods 7, a first threaded hole 8 is formed in one end, far away from the baffle 6, of each connecting rod 7, 4 second threaded holes 9 are formed in the side wall of the valve body 1, the first threaded holes 8 correspond to the second threaded holes 9, hexagon socket countersunk head screws 10 are sequentially arranged through the second threaded holes 9 and the first threaded holes 8, the valve body 1 is fixedly connected with the connecting rods 7 through the screws 10, the reliability of the positions of the baffle 6 is further ensured, 4 guide rails 19 are uniformly arranged on the inner walls of the valve body 1 and the second end cover 3, one end, far away from the baffle 6, of each connecting rod 7 is arranged in the guide rails 19, the connecting rods 7 and the baffle 6 are conveniently pushed to a designated position, and the valve body 1 and the connecting rods 7 are connected together through the screws 10 in a time-saving and labor-saving manner, the baffle 6 is fixedly provided with a base 11 at one side close to the clamping table 5 to limit the positions of a spring 13 and a sleeve 15, the middle position of one end of the base 11, which is far away from the baffle 6, is provided with a first groove 12, the first groove 12 is internally provided with the spring 13, the base 11, which is positioned outside the first groove 12, is provided with a ring groove 14, the ring groove 14 is internally provided with the sleeve 15, one end of the sleeve 15, which is far away from the base 11, is fixedly connected with a stop block 16, the middle position of one side of the stop block 16, which is close to the sleeve 15, is provided with a second groove 17, the other end of the spring 13 is arranged in the second groove 17, the position of the spring 13 is limited by the first groove 12 and the second groove 17, one end of the stop block 16, which is far away from the sleeve 15, is abutted against the clamping table 5, the stop block 16 is in a circular truncated cone shape, and the joint of the clamping table 5 and the stop block 16 is provided with a groove 20, the abutting surface of the stop block 16 and the clamping platform 5 is increased, the gap at the joint is reduced, the diameter of one end, close to the sleeve 15, of the stop block 16 is larger than the inner diameter of the clamping platform 5, the diameter of one end, far away from the sleeve 15, of the stop block 16 is smaller than the inner diameter of the clamping platform 5, the stop block 16 and the clamping platform 5 are reliably abutted together, fluid flows into the through hole 4 from the first end cover 2, the pressure of the fluid is larger than the elastic force of the spring 13, the stop block 16 is separated from the clamping platform 5, one end, far away from the stop block 16, of the sleeve 15 extends into the annular groove 14, the spring 13 is compressed, the fluid enters the through hole 4 in the valve body 1 and then flows into the pipeline connected with the second end cover 3 along the hole formed by the baffle 6, the inner wall of the valve body 1 and the connecting rod 7, when the flow of the fluid is reduced and the elastic force of the spring 13 is larger than the pressure of the fluid, the spring 13 pushes the stop block 16 and the clamping platform 5 to abut together to prevent the fluid in the pipeline connected with the second end cover 3 from flowing backwards, an overflow hole 18 is formed in the side wall of the sleeve, which is close to the stop block, so that liquid can circulate inside and outside the sleeve 15, and the phenomenon that the sleeve 15 and the valve body 1 generate pressure difference to influence the operation of the sleeve 15 in the annular groove 14 is avoided.

The above is only the preferred embodiment of the present invention, so all the equivalent changes or modifications made by the structure, features and principles in accordance with the claims of the present invention are included in the claims of the present invention.

Claims (5)

1. A high-pressure check valve comprises a valve body, wherein one end of the valve body is fixedly connected with a first end cover, the other end of the valve body is fixedly connected with a second end cover, the high-pressure check valve is characterized in that a through hole is formed in the center of the cross section of the first end cover, the valve body and the center of the cross section of the second end cover, a clamping table is arranged on a fixing ring at the joint of the inner wall of the valve body and the inner wall of the first end cover, a baffle is vertically arranged at the through hole in the valve body, a plurality of connecting rods are uniformly and fixedly arranged at the outer edge of the baffle, a first threaded hole is formed in one end, away from the baffle, of each connecting rod, a plurality of second threaded holes are formed in the side wall of the valve body, the first threaded holes correspond to the second threaded holes, inner hexagonal countersunk screws are arranged on the second threaded holes and the first threaded holes in sequence, a base is fixedly arranged on one side, close to the clamping table, and a first groove is formed in the middle position, away from one end of the base, the improved structure of the oil-water separation device is characterized in that a spring is arranged in the first groove, an annular groove is formed in the base outside the first groove, a sleeve is arranged in the annular groove, one end, deviating from the base, of the sleeve is fixedly connected with a stop block, the stop block is close to the middle of one side of the sleeve and is provided with a second groove, the other end of the spring is arranged in the second groove, one end, deviating from the sleeve, of the stop block is connected with a clamping table in a butt mode, and the stop block is close to the side wall of the sleeve of the stop block and is provided with an overflow hole.

2. The high-pressure check valve according to claim 1, wherein a plurality of guide rails are uniformly arranged on the inner walls of the valve body and the second end cover, and one end of the connecting rod, which is far away from the baffle plate, is arranged in the guide rails.

3. The high-pressure check valve according to claim 1, wherein the stopper is in the shape of a circular truncated cone, and a groove is formed at the joint of the stopper and the circular truncated cone.

4. The high pressure check valve of claim 1, wherein a side of the catch adjacent the first end cap is angled and a side of the catch adjacent the valve body is angled.

5. The high pressure check valve of claim 1, wherein the diameter of the stop adjacent the end of the sleeve is greater than the inner diameter of the land, and the diameter of the stop distal the end of the sleeve is less than the inner diameter of the land.

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