CN220727217U - Check safety valve - Google Patents

Abstract

The application discloses check relief valve belongs to check relief valve technical field. Including the check safety valve body, the check safety valve body is including water inlet and delivery port, the water inlet internal fixation is equipped with the toper pressure boost cover, fluid gets into the check safety valve body by water inlet department, can promote check piece and valve rod displacement, fluid can flow out from the delivery port through the gap between check piece and the second water retaining valve piece, and when fluid backward flow, the check piece is automatic down moving under the spring effect, the check piece is with delivery port and water inlet shutoff, after long-term use, spring elastic fatigue causes the check piece to hold the dynamics and reduces, lead to the check ability decline, the swivel nut rotates along the helicoidal axle, drive spring water inlet direction displacement through Y shape slide and spacing ring, the check piece drives when valve rod upward movement, need overcome the ability increase of spring, the life of extension check safety valve body.

Description

Check safety valve

Technical Field

The present application relates to the field of check safety valves, and more particularly, to a check safety valve.

Background

The check safety valve is used for controlling the one-way flow of fluid in a pipeline, and has the main functions of preventing the fluid from flowing backwards in the pipeline, keeping the flowing direction unidirectional, enabling the fluid to freely pass through in one direction by the check safety valve, preventing the fluid from flowing in the reverse direction, automatically closing the check valve when the fluid tries to flow reversely, preventing the backflow, but the existing check valve with a spring structure cannot be correspondingly adjusted when the spring force is reduced, such as the small-caliber mute check valve proposed by the prior art No. CN219452973U, and comprises a valve body, a fluid guide body, a rubber coating valve clack and a valve rod, wherein the fluid guide body is positioned in a valve cavity of the valve body and is close to the bottom end of the valve body, the fluid guide body is connected with the valve body through a fastener, a flowing channel is formed between the fluid guide body and the valve body, the rubber coating valve clack is matched with a flow inlet of the valve cavity, the valve rod is inserted in the guide body, the shaft sleeves are respectively sleeved at the two ends of the part, located in the guide body, of the valve rod, the spring is arranged between the rubber coating valve clack and the guide body, the guide body is provided with a guide channel for the valve rod to move directionally, one end, far away from the inlet, of the guide channel is closed, the valve rod is provided with a leakage flow channel extending along the axial direction, the leakage flow channel is communicated with the guide channel and the valve cavity, so that leakage air flow and liquid flow can be generated when the valve rod moves in the direction far away from the inlet, elastic fatigue can occur after the spring structure in the check valve assembly is used for a long time, the elastic force of the spring is reduced, the downward pressing force of the check valve is reduced, and when the check capacity of the check valve body is reduced, the service life of the check valve body is not long enough.

Disclosure of Invention

1. Technical problem to be solved

The utility model provides an aim at provides a check relief valve, the spring structure in connecting the check valve subassembly can appear elastic fatigue after long-term use among the above-mentioned prior art, cause the elastic force of spring to reduce, the dynamics that the check valve was held down reduces, when leading to check safety valve's check ability to reduce, check safety valve's life is not long enough, it is internal that the fluid gets into check safety valve by water inlet department, can promote check block and valve rod displacement, the gap between check block and the second water retaining valve piece can follow the delivery port and flow out, and when fluid backward flows, the check block moves down under the spring action automatically, the check block is with delivery port and water inlet shutoff, after long-term use, spring elastic fatigue causes the check block to hold the dynamics and reduces, lead to the check ability to reduce, the swivel nut rotates along the helicoidal axis, when driving spring water inlet direction displacement through Y shape slide and spacing ring, the check block drives the valve rod and upwards moves, need overcome the ability increase of spring, the technical effect of the life of extension check safety valve.

2. Technical proposal

The technical scheme of this application provides a check relief valve, contains: the check safety valve body comprises a water inlet and a water outlet, a conical pressurizing sleeve is fixedly arranged in the water inlet, a first water blocking valve block and a second water blocking valve block are fixedly arranged on the inner wall of the check safety valve body, a guide cylinder is arranged at the upper end of the check safety valve body in a threaded mode, a guide assembly is fixedly arranged at the upper end of the guide cylinder, a check valve is slidably arranged on the guide cylinder and the guide assembly, the check valve comprises a valve rod and a check block, the valve rod is fixedly connected with the check block, the check block is arranged in the check safety valve body, the check block is in sealing connection with the first water blocking valve block and the second water blocking valve block, and a pre-compression pressure adjusting mechanism is slidably arranged on the guide cylinder.

Through adopting above-mentioned technical scheme, fluid gets into the check safety valve body by water inlet department, can promote check block and valve rod and upwards move along guide cylinder and direction subassembly, then fluid flows out through the delivery port, and when fluid backward flows, the check block moves down automatically, can with first water retaining valve piece and second water retaining valve piece sealing connection, the shutoff of water outlet and water inlet, elastic fatigue appears after the elastic structure of connecting the check block long-term use, cause the dynamics that the check block was pressed down to hold to reduce, when leading to check safety valve body's non return ability to reduce, accessible regulation pre-compression force adjustment mechanism realizes the packing force of check block and adjusts high purpose, extension check safety valve body's life.

Optionally, guide cylinder bottom fixedly connected with shutoff flange seat, shutoff flange seat and valve rod sliding connection, shutoff flange seat and check safety valve body threaded connection, the oval logical groove has been seted up on the guide cylinder, first guide slot has been seted up to the inner wall in oval logical groove, the second guide slot has been seted up to the guide cylinder surface, guide cylinder is through first guide slot and second guide slot slidable mounting pre-compaction force adjustment mechanism.

Through adopting above-mentioned technical scheme, the guide cylinder makes the shutoff of check safety valve body upper port through shutoff flange seat, and the valve rod slides along shutoff flange seat, makes the check block realize along shutoff first water blocking valve piece and second water blocking valve piece purpose.

Optionally, the pre-pressing force adjusting mechanism comprises a Y-shaped sliding seat, the Y-shaped sliding seat is in sliding connection with the guide cylinder, the Y-shaped sliding seat is fixedly connected with a limiting ring, the limiting ring is arranged in the guide cylinder and is in sliding connection with the valve rod, the limiting ring is in transmission connection with the check valve, the Y-shaped sliding seat is rotationally connected with a screw sleeve, the screw sleeve is in threaded connection with a stud, and the bottom end of the stud is fixedly connected with the upper surface of the plugging flange seat.

By adopting the technical scheme, when the screw sleeve is rotated, the screw sleeve is displaced along the axial direction of the stud, the Y-shaped sliding seat and the limiting ring can be driven to downwards displace along the guide cylinder, and the aim of downwards displacing the limiting ring along the valve rod can be fulfilled.

Optionally, valve rod fixedly connected with clamping ring, the clamping ring bottom surface is fixed to be equipped with the spring, the spring housing is established and is installed in the valve rod surface, spring bottom fixed connection spacing ring.

Through adopting above-mentioned technical scheme, when spacing girdle moves the spring downward displacement, the elastic tension of spring increases, because of spacing fixed processing of spacing ring and Y shape slide by the swivel nut, when the backstop piece drives the valve rod upward movement then, needs to overcome the ability increase of spring, and the stroke that the spring is adjustable is through oval logical groove visualization.

Optionally, the guide assembly is including a top section of thick bamboo, a plurality of supports are fixed to top section of thick bamboo bottom surface, support bottom fixed connection guide cylinder, the interior grafting valve rod of sliding in a top section of thick bamboo.

Through adopting above-mentioned technical scheme, when the valve rod displacement, can follow a section of thick bamboo and slide the direction, make valve rod displacement adjustment more stable.

3. Advantageous effects

One or more technical schemes provided in the technical scheme of the application at least have the following technical effects or advantages: fluid enters the check safety valve body from the water inlet, can promote the displacement of check block and valve rod, and fluid can flow out from the delivery port through the gap between check block and the second water blocking valve piece, and when fluid backward flows, the check block moves down under the spring effect voluntarily, and the check block blocks up delivery port and water inlet, after long-term use, spring elastic fatigue causes the check block to hold the dynamics and reduces, leads to the check ability to descend, and the swivel nut rotates along the swivel nut axle, drives spring water inlet direction displacement through Y shape slide and spacing ring, and the check block drives when the valve rod upwards moves, need overcome the ability increase of spring, extension check safety valve body's life.

Drawings

FIG. 1 is a schematic view of the overall structure of a check safety valve according to a preferred embodiment of the present disclosure;

FIG. 2 is a schematic diagram of a check safety valve body and a pre-compression force adjusting mechanism of a check safety valve according to a preferred embodiment of the present disclosure;

FIG. 3 is an enlarged schematic view of the check valve according to the preferred embodiment of the present utility model shown in FIG. 2;

FIG. 4 is an enlarged schematic view of the check valve according to the preferred embodiment of the present utility model shown in FIG. 2;

the reference numerals in the figures illustrate: 1. a check safety valve body; 11. a water inlet; 12. a water outlet; 13. a first water blocking valve block; 14. a second water blocking valve block; 15. a conical pressurizing sleeve; 2. a guide cylinder; 21. elliptical through grooves; 22. a first guide groove; 23. plugging the flange seat; 24. a second guide groove; 3. a check valve; 31. a valve stem; 32. a non-return block; 33. a compression ring; 34. a spring; 4. a guide assembly; 41. a top cylinder; 42. a bracket; 5. pre-pressing the pressure regulating mechanism; 51. a Y-shaped slide; 511. a limiting ring; 52. a screw sleeve; 53. a stud.

Detailed Description

The present application is described in further detail below in conjunction with the drawings attached to the specification.

Referring to fig. 1 to 4, an embodiment of the present application provides a check safety valve, including: the check safety valve body 1, check safety valve body 1 is including water inlet 11 and delivery port 12, the water inlet 11 internal fixation is equipped with toper pressure boost cover 15, the fixed first water blocking valve piece 13 and the second water blocking valve piece 14 that is equipped with of check safety valve body 1 inner wall, guide cylinder 2 is installed to guide cylinder 1 upper end screw thread, guide cylinder 2 upper end fixed mounting has guide subassembly 4, guide cylinder 2 and guide subassembly 4 slidable mounting have check valve 3, check valve 3 is including valve rod 31 and check block 32, valve rod 31 and check block 32 fixed connection, check block 32 locates in the check safety valve body 1, and check block 32 and first water blocking valve piece 13 and second water blocking valve piece 14 sealing connection, slidable mounting has pre-compaction force adjustment mechanism 5 on guide cylinder 2, fluid gets into check safety valve body 1 by water inlet 11 department, can promote check block 32 and valve rod 31 and guide subassembly 4 upward movement, then the fluid flows out through delivery port 12, and when fluid backward flow, check block 32 automatically moves down, can seal with first water blocking piece 13 and second water blocking valve piece 14, check block 32 is with delivery port 12 and water blocking piece 32 sealing connection, the elastic force of check block 32 is connected with water blocking valve piece 32 and water blocking valve piece 14, the elastic force of seal mechanism is realized and the pressure of the seal is prolonged when the seal is realized to the valve body 1 through the high-time, the elastic force of seal is realized, and the seal force of seal is reduced, and the purpose is realized and is prolonged, and the life-span is reduced by the seal pressure adjustment mechanism is realized.

Referring to fig. 2 to 4, the bottom end of the guide cylinder 2 is fixedly connected with a plugging flange seat 23, the plugging flange seat 23 is slidably connected with a valve rod 31, the plugging flange seat 23 is in threaded connection with the check safety valve body 1, an oval through groove 21 is formed in the guide cylinder 2, a first guide groove 22 is formed in the inner wall of the oval through groove 21, a second guide groove 24 is formed in the outer surface of the guide cylinder 2, the guide cylinder 2 is slidably provided with a pre-compression force adjusting mechanism 5 through the first guide groove 22 and the second guide groove 24, the guide cylinder 2 enables the upper port of the check safety valve body 1 to be plugged through the plugging flange seat 23, the valve rod 31 slides along the plugging flange seat 23, and a check block 32 is enabled to achieve the purpose of plugging the first water blocking valve block 13 and the second water blocking valve block 14.

Referring to fig. 2 and 4, the pre-pressing force adjusting mechanism 5 includes a Y-shaped slide seat 51, the Y-shaped slide seat 51 is slidably connected with the guide cylinder 2, the Y-shaped slide seat 51 is fixedly connected with a limiting ring 511, the limiting ring 511 is disposed in the guide cylinder 2 and is slidably connected with the valve rod 31, the limiting ring 511 is in transmission connection with the check valve 3, the Y-shaped slide seat 51 is rotationally connected with a threaded sleeve 52, the threaded sleeve 52 is in threaded connection with a stud 53, the bottom end of the stud 53 is fixedly connected with the upper surface of the plugging flange seat 23, when the threaded sleeve 52 is rotated, the threaded sleeve 52 is displaced along the axial direction of the stud 53, so that the Y-shaped slide seat 51 and the limiting ring 511 can be driven to displace downwards along the guide cylinder 2, and the limiting ring 511 can displace downwards along the valve rod 31.

Referring to fig. 2 and 4, the valve rod 31 is fixedly connected with the compression ring 33, the spring 34 is fixedly arranged on the bottom surface of the compression ring 33, the spring 34 is sleeved and installed on the outer surface of the valve rod 31, the bottom end of the spring 34 is fixedly connected with the limiting ring 511, when the limiting ring 511 drives the spring 34 to move downwards, the elastic tension of the spring 34 is increased, the limiting ring 511 and the Y-shaped sliding seat 51 are subjected to limiting and fixing treatment by the threaded sleeve 52, then when the check block 32 drives the valve rod 31 to move upwards, the capacity of overcoming the spring 34 is increased, and the adjustable stroke of the spring 34 is visualized through the elliptical through groove 21.

Referring to fig. 1 and 2, the guide assembly 4 includes a top cylinder 41, a plurality of brackets 42 are fixedly arranged on the bottom surface of the top cylinder 41, the bottom ends of the brackets 42 are fixedly connected with the guide cylinder 2, the valve rod 31 is slidably inserted in the top cylinder 41, and when the valve rod 31 is displaced, sliding guide can be performed along the top cylinder 41, so that the displacement adjustment of the valve rod 31 is more stable.

Working principle: the guide cylinder 2 enables the upper port of the check safety valve body 1 to be plugged through the plugging flange seat 23, the valve rod 31 slides along the plugging flange seat 23 through the elastic acting force of the spring 34, so that the check block 32 achieves the purpose of plugging the first water blocking valve block 13 and the second water blocking valve block 14, fluid enters the check safety valve body 1 from the water inlet 11, the check block 32 and the valve rod 31 can be pushed to move towards the top cylinder 41 along the guide cylinder 2, then the fluid can flow out of the water outlet 12 through a gap between the check block 32 and the second water blocking valve block 14, when the fluid flows reversely, the check block 32 automatically moves downwards under the action of the spring 34, the water outlet 12 and the water inlet 11 can be plugged through the sealing connection with the first water blocking valve block 13 and the second water blocking valve block 14, the check block 32 is subjected to elastic fatigue of the spring 34 after long-term use, the force of the check block 32 is reduced, the check block 32 is enabled to be pressed downwards, when the check capacity of the check safety valve body 1 is reduced, the screw sleeve 52 can be driven to move along the axial direction of the stud 53, the Y-shaped sliding seat 51 and the limiting ring 511 can be driven to move downwards along the guide cylinder 2, the limiting ring 511 can be driven to move downwards, when the valve rod 31 moves downwards along the spring 31, the limiting ring 511 can be driven to move downwards, the spring 511, the limit ring 511 can be driven to move upwards, the limit ring 511, the elastic sliding seat 511 can be driven by the spring and the elastic sliding seat 511, the elastic seat is driven, the limit ring can be driven, and the limit ring can be moved upwards, and the limit valve body, and the limit seat can be moved.

Claims (5)

1. A check safety valve, characterized in that: comprising: the check safety valve body comprises a water inlet and a water outlet, a conical pressurizing sleeve is fixedly arranged in the water inlet, a first water blocking valve block and a second water blocking valve block are fixedly arranged on the inner wall of the check safety valve body, a guide cylinder is arranged at the upper end of the check safety valve body in a threaded mode, a guide assembly is fixedly arranged at the upper end of the guide cylinder, a check valve is slidably arranged on the guide cylinder and the guide assembly, the check valve comprises a valve rod and a check block, the valve rod is fixedly connected with the check block, the check block is arranged in the check safety valve body, the check block is in sealing connection with the first water blocking valve block and the second water blocking valve block, and a pre-compression pressure adjusting mechanism is slidably arranged on the guide cylinder.

2. A check safety valve according to claim 1, wherein: the sealing device comprises a guide cylinder, a sealing flange seat, a check safety valve body, an oval through groove, a first guide groove, a second guide groove, a pre-compression pressure adjusting mechanism and a sealing flange seat, wherein the sealing flange seat is fixedly connected with the bottom end of the guide cylinder, the sealing flange seat is in sliding connection with the valve rod, the sealing flange seat is in threaded connection with the check safety valve body, the guide cylinder is provided with the oval through groove, the inner wall of the oval through groove is provided with the first guide groove, the outer surface of the guide cylinder is provided with the second guide groove, and the guide cylinder is in sliding installation with the second guide groove to pre-compress the pressure adjusting mechanism.

3. A check safety valve according to claim 2, wherein: the pre-pressing pressure adjusting mechanism comprises a Y-shaped sliding seat, the Y-shaped sliding seat is in sliding connection with a guide cylinder, the Y-shaped sliding seat is fixedly connected with a limiting ring, the limiting ring is arranged in the guide cylinder and is in sliding connection with a valve rod, the limiting ring is in transmission connection with a check valve, the Y-shaped sliding seat is rotationally connected with a screw sleeve, the screw sleeve is in threaded connection with a stud, and the bottom end of the stud is fixedly connected with the upper surface of a plugging flange seat.

4. A check safety valve according to claim 3, wherein: the valve rod fixedly connected with clamping ring, the clamping ring bottom surface is fixed to be equipped with the spring, the spring cover is established and is installed in the valve rod surface, spring bottom fixed connection spacing ring.

5. A check safety valve according to claim 1, wherein: the guide assembly comprises a top cylinder, a plurality of supports are fixedly arranged on the bottom surface of the top cylinder, the bottom ends of the supports are fixedly connected with the guide cylinder, and the valve rod is inserted in the top cylinder in a sliding mode.