CN210859915U

CN210859915U - Micro-resistance slow-closing high-pressure check valve

Info

Publication number: CN210859915U
Application number: CN201921794446.0U
Authority: CN
Inventors: 占送良
Original assignee: Zhejiang Liangkai Valve Co ltd
Current assignee: Zhejiang Liangkai Valve Co ltd
Priority date: 2019-10-23
Filing date: 2019-10-23
Publication date: 2020-06-26
Anticipated expiration: 2029-10-23

Abstract

The utility model discloses a micro-resistance slow-closing high-pressure check valve, which is characterized in that the valve comprises a valve body, a water inlet channel, a water outlet channel, a valve seat and a valve cover, a valve rod is rotatably connected above the valve seat, a valve clack is fixedly connected on the valve rod, a slow-closing device is arranged below the valve seat, the slow-closing device comprises a cylinder sleeve, a piston is arranged in the cylinder sleeve, the opening part of the cylinder sleeve is sealed by a bracket, an adjusting rod is arranged in the cylinder sleeve, a through channel is arranged on the bracket, the adjusting rod is screwed with a hexagon nut on the outer part of the bracket, an external pipeline is arranged between the water inlet channel and the inner cavity of the cylinder sleeve, an adjusting valve is arranged on the valve body, a plurality of stirring devices are arranged below the valve seat, the stirring devices comprise a stirring rod and stirring blades, when water enters the water inlet channel, the stirring, the check valve can prevent the periphery of the slow closing device from depositing and accumulating, and the normal use of the piston is maintained.

Description

Micro-resistance slow-closing high-pressure check valve

Technical Field

The utility model relates to the technical field of valves, more specifically say, it relates to a high pressure check valve is slowly closed to little resistance.

Background

The check valve is one of many pipeline valves, and is mainly used for controlling the unidirectional flow of liquid medium in a pipeline. In a drainage system, a check valve is usually installed at the outlet of a water pump to prevent water from flowing backward to cause damage to the water pump.

The micro-resistance slow-closing check valve is characterized in that a slow-closing device is additionally arranged in a valve body of the check valve, when a flowing medium stops entering the valve body, the flowing medium freely falls and closes under the action of the self gravity of a valve clack, but because the slow-closing device extends out of a piston and pushes the valve clack to open together with the flowing medium when the flowing medium enters the valve body, the valve clack falls to the position of the piston in the closing process, the valve clack cannot be completely closed and can only be slowly closed along with the closing of the slow-closing device, a slow-closing effect is achieved, the pressure of a water hammer peak value is weakened, and the destructive water hammer.

The downside at the valve body inside is usually installed to current slow closure device, can make things convenient for the butt valve clack, play the slow closure effect, however under long-time in service behavior, because slow closure device sets up the position and is on the low side, cause the sediment easily and pile up, especially apply on the sewage pipes, because the liquid of sewage pipes has more impurity, the dirt, so it piles up to form incrustation scale impurity at slow closure device week side more easily, pile up the back in several times, the dirt can pile up into piles, thereby influence the closing of valve clack, the normal work of slow closure device, reduce the accuracy of slow closure device, thereby influence the use of whole check valve.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a not enough to prior art exists, the utility model aims to provide a high pressure check valve is slowly closed to little resistance, this check valve can prevent to slowly close the peripheral sediment of device and pile up, maintains piston normal use.

In order to achieve the above purpose, the utility model provides a following technical scheme: a micro-resistance slow-closing high-pressure check valve comprises a valve body, a water inlet channel, a water outlet channel, a valve seat and a valve cover, wherein the water inlet channel and the water outlet channel are communicated with each other and are arranged at the left end and the right end of the valve body;

the slow closing device comprises a cylinder sleeve embedded in the valve body, a piston capable of abutting against the valve clack is arranged in the cylinder sleeve, the opening of the cylinder sleeve is blocked by a support, an adjusting rod abutting against the piston is arranged in the cylinder sleeve, a penetrating channel for the adjusting rod to penetrate is arranged on the support, the adjusting rod penetrates through the penetrating channel and extends outwards, a hexagon nut used for adjusting the piston to move in the cylinder sleeve is screwed on the adjusting rod positioned outside the support, an external pipeline is arranged between the water inlet channel and the inner cavity of the cylinder sleeve, an adjusting valve used for controlling the flow rate of liquid flowing into the external pipeline is arranged on the valve body, and when water enters the water inlet channel, the external pipeline flows in the liquid to press the piston to move towards the valve cla;

the below of disk seat is provided with a plurality of agitating unit, agitating unit is used for carrying out the stirring to piston week side including the puddler be connected with the valve body and setting up on the puddler, can drive the stirring vane rotation and stirring vane can scrape with the lateral wall of piston and the inside wall of valve body under the flow of liquid when intaking in the inhalant canal.

The utility model discloses further set up to: the support is connected with the valve body through a plurality of inner hexagonal cylindrical screws in a threaded mode.

The utility model discloses further set up to: and the adjusting rod is provided with a butting nut which is used for butting against the piston.

The utility model discloses further set up to: o-shaped sealing rings are arranged between the adjusting rod and the support, between the piston and the cylinder sleeve, between the cylinder sleeve and the support, and between the sleeve cylinder and the valve body.

The utility model discloses further set up to: the valve cover is in threaded connection with the valve body through a plurality of locking bolts, and a sealing gasket is arranged at the joint of the valve cover and the valve body.

The utility model discloses further set up to: the valve body is provided with an installation channel for installing the valve rod into the valve body, the valve body is provided with an installation block for plugging the installation channel, the valve body is provided with a first installation hole for inserting one end of the valve rod, the installation block is provided with a second installation hole for inserting the other end of the valve rod, and the installation block is in threaded connection with the valve body through a plurality of installation bolts.

The utility model discloses further set up to: the outer side of the stirring device is provided with an auxiliary device for assisting the stirring device to rotate, and the auxiliary device comprises an auxiliary rod connected with the valve body and an auxiliary blade arranged on the auxiliary rod and used for pushing the stirring blade to rotate.

To sum up, the utility model discloses following beneficial effect has: the utility model is designed in such a way that firstly, a user adjusts the moving distance of the piston in the sleeve cylinder by adjusting the hexagon nut on the adjusting rod, then when water enters the water inlet channel, a small part of liquid flows into the cylinder sleeve through the external pipeline to push the piston to extend outwards, most of the liquid compresses the valve clack, the valve clack is rotated and opened under the combined action of the piston and the liquid, and the liquid flows into the inner cavity of the valve body and then flows out of the water outlet channel; when water stops entering the water inlet channel, the valve clack falls freely and is closed due to the dead weight of the valve clack, but the valve clack cannot be closed completely due to the fact that the piston is located at the extending position and supports against the valve clack, liquid can still pass through the valve clack, the water hammer effect is weakened, and the destructive water hammer phenomenon is prevented; when the valve clack is pressed at the end part of the piston, liquid in the cylinder sleeve hinders the piston to retract quickly, the valve clack is prevented from being closed, the valve clack pushes the piston to move towards the direction far away from the valve clack under the resistance action of the liquid in the cylinder sleeve, and the liquid in the sleeve cylinder flows out through the external pipeline under the pushing action of the piston until the valve clack is closed.

When liquid flows from the water inlet channel to the water outlet channel, the liquid can impact the stirring blades in the flowing process, when the stirring blades are fixedly connected with the stirring rod, and the stirring rod is rotatably connected with the valve body, the stirring rod and the stirring blades can rotate simultaneously, (preferably, the stirring rod is fixedly connected with the valve body, and the stirring blades are rotatably connected with the stirring rod, in which case, the force required by the rotation of the stirring blades is less) so that the stirring blades are scraped with the outer side wall of the piston and the inner side wall of the valve body, precipitates generated by the previous accumulation are scraped, the phenomenon that the more the piles are, the thicker the piles are, the accuracy of the piston is reduced, and the closing of the valve clack is influenced, besides, a plurality of stirring devices can be arranged on the same side of the piston, the stirring blades in the stirring devices are in rotary butt joint with the stirring blades in the adjacent stirring devices, and one stirring device can drive the other stirring device to rotate, thereby guarantee that a plurality of places homoenergetic on the inner wall side of valve body and the lateral wall of piston are scraped, guarantee that the clearance dirt is comparatively comprehensive to guarantee the normal use of product, guarantee the life of product.

Drawings

FIG. 1 is a schematic cross-sectional view of a high-pressure check valve with a micro-resistance and a slow-closing function;

fig. 2 is a left side view of the micro-resistance slow-closing high-pressure check valve.

Reference numerals: 1. a valve body; 11. a water inlet channel; 12. a water outlet channel; 13. a valve seat; 14. a valve cover; 141. locking the bolt; 142. sealing gaskets; 15. a valve stem; 16. a valve flap; 17. installing a channel; 18. mounting blocks; 181. a second mounting hole; 182. installing a bolt; 19. a first mounting hole; 2. a slow closing device; 21. a cylinder liner; 22. a piston; 23. adjusting a rod; 24. a support; 241. passing through a channel; 25. a socket head cap screw; 26. a hexagonal nut; 27. abutting against the nut; 28. an O-shaped sealing ring; 3. a stirring device; 31. a stirring rod; 32. a stirring blade; 4. adjusting a valve; 41. connecting a pipeline externally; 5. an auxiliary device; 51. an auxiliary lever; 52. auxiliary blades.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples. In which like parts are designated by like reference numerals. It should be noted that the terms "front," "back," "left," "right," "upper" and "lower" used in the following description refer to directions in the drawings, and the terms "bottom" and "top," "inner" and "outer" refer to directions toward and away from, respectively, the geometric center of a particular component.

Referring to fig. 1 to 2, in order to achieve the above object, the present invention provides the following technical solutions: a kind of micro-resistance slow-closing high-pressure check valve, including the valve block 1, water inlet channel 11 and water outlet channel 12 that communicate with each other and set up in the left and right sides of the valve block 1, the valve base 13 set up between water inlet channel 11 and water outlet channel 12, the valve bonnet 14 sealingly mounted on top of the valve block 1, the top of the valve base 13 rotates and connects with the valve stem 15, the valve stem 15 is set up along the width direction of the valve block 1, the valve stem 15 fixedly connects with can form the valve clack 16 sealed opening and closing with the valve base 13, there is slow-closing device 2 cooperating with valve clack 16 to realize slow-closing function below the valve base 13;

the slow closing device 2 comprises a cylinder sleeve 21 embedded in the valve body 1, a piston 22 capable of abutting against the valve clack 16 is arranged in the cylinder sleeve 21, an opening of the cylinder sleeve 21 is blocked by a support 24, an adjusting rod 23 abutting against the piston 22 is arranged in the cylinder sleeve 21, a through channel 241 for the adjusting rod 23 to pass through is arranged on the support 24, the adjusting rod 23 passes through the through channel 241 and extends outwards, a hexagon nut 26 for adjusting the piston 22 to move in the cylinder sleeve 21 is screwed on the adjusting rod 23 positioned outside the support 24, an external pipeline 41 is arranged between the water inlet channel 11 and an inner cavity of the cylinder sleeve 21, an adjusting valve 4 for controlling the flow rate of liquid flowing into the external pipeline 41 is arranged on the valve body 1, and when water enters the water inlet channel 11, the external pipeline 41 flows in the liquid to press the;

the below of disk seat 13 is provided with a plurality of agitating unit 3, and agitating unit 3 is used for carrying out the stirring to piston 22 week side stirring blade 32 including the puddler 31 of being connected with valve body 1 and setting up on the puddler 31, can drive stirring blade 32 rotatory and stirring blade 32 can be scraped with the lateral wall of piston 22 and the inside wall of valve body 1 with the flow of liquid when intaking in inhalant canal 11.

The utility model discloses a design, the user adjusts the piston 22 through adjusting hexagon nut 26 on the regulation pole 23 at first and moves the distance size in the cover jar, when intaking again in inhalant canal 11, and a small part of liquid promotes piston 22 to stretch out outward through external pipeline 41 flow to cylinder liner 21 in, and most of liquid oppresses valve clack 16, makes valve clack 16 rotate to open under piston 22 and liquid combined action, and liquid flows into valve body 1 inner chamber and flows out from exhalant canal 12 again; when water inflow is stopped in the water inlet channel 11, the valve clack 16 is closed by free fall due to the dead weight of the valve clack 16, but the valve clack 16 cannot be completely closed because the piston 22 is in the extending position and is propped against the valve clack 16, so that liquid can still pass through, the water hammer effect is weakened, and the destructive water hammer phenomenon is prevented; when the valve flap 16 presses the end of the piston 22, the liquid in the cylinder liner 21 hinders the piston 22 from retracting rapidly, and the valve flap 16 is prevented from closing, at this time, the valve flap 16 pushes the piston 22 to move away from the valve flap 16 under the resistance of the liquid in the cylinder liner 21, and the liquid in the cylinder liner flows out through the external pipe 41 under the push of the piston 22 until the valve flap 16 closes.

When liquid flows from the water inlet channel 11 to the water outlet channel 12, the liquid can impact the stirring blade 32 in the flowing process, when the stirring blade 32 is fixedly connected with the stirring rod 31, and the stirring rod 31 is rotatably connected with the valve body 1, the stirring rod 31 and the stirring blade 32 can rotate simultaneously, (preferably, the stirring rod 31 is fixedly connected with the valve body 1, and the stirring blade 32 is rotatably connected with the stirring rod 31, in this case, the force required for rotating the stirring blade 32 is less) so that the stirring blade 32 is scraped with the outer side wall of the piston 22 and the inner side wall of the valve body 1, precipitates generated by previous accumulation are scraped, the phenomena that the more the accumulation is, the thicker the accumulation is, the accuracy of the piston 22 is reduced, and the closing of the valve clack 16 is influenced are prevented, besides, a plurality of stirring devices 3 can be arranged on the same side of the piston 22, the stirring blade 32 in the stirring device 3 is in contact with the stirring blade 32 in the adjacent stirring device 3, can drive another agitating unit 3 and rotate when an agitating unit 3 rotates to guarantee that a plurality of places homoenergetic on the inner wall side of valve body 1 and the lateral wall of piston 22 are scraped, guarantee that the clearance dirt is comparatively comprehensive, thereby guarantee the normal use of product, guarantee the life of product.

The support 24 is in threaded connection with the valve body 1 through a plurality of inner hexagonal cylindrical screws 25, the mode is firm in fixation, and the effect of preventing other people from being detached is achieved.

The adjusting rod 23 is provided with an abutting nut 27 for abutting against the piston 22, and the abutting of the piston 22 with the adjustment can be realized by the abutting nut 27, so that the manufacturing requirement for the adjusting rod 23 can be reduced during manufacturing, and the adjusting rod can be conveniently installed during installation.

O-shaped sealing rings 28 are arranged between the adjusting rod 23 and the support 24, between the piston 22 and the cylinder sleeve 21, between the cylinder sleeve 21 and the support 24 and between the sleeve cylinder and the valve body 1, so that liquid in the valve body 1 can be prevented from entering the cylinder sleeve 21, the liquid in the cylinder sleeve 21 can be prevented from flowing out of the sleeve cylinder, and sufficient sealing performance is ensured.

The valve cover 14 is in threaded connection with the valve body 1 through a plurality of locking bolts 141, and a sealing gasket 142 is arranged at the joint of the valve cover 14 and the valve body 1.

Be provided with the installation passageway 17 that supplies valve rod 15 to install into valve body 1 on the valve body 1, be provided with the installation piece 18 that is used for shutoff installation passageway 17 on the valve body 1, be provided with the first mounting hole 19 that supplies 15 one end male of valve rod on the valve body 1, be provided with the second mounting hole 181 that supplies 15 other ends male of valve rod on the installation piece 18, installation piece 18 is through a plurality of

construction bolts

182 and 1 threaded connection of valve body, this design is convenient to install valve rod 15 into valve body 1, the 19 other ends of the first mounting hole of valve rod 15 one end insert second mounting hole 181, can guarantee that valve rod 15 rotates when can playing limiting displacement and not influenced, it is fixed with installation piece 18 through construction bolt 182 after installing again, accomplish the equipment to valve rod 15.

The outside of agitating unit 3 is provided with supplementary agitating unit 3 pivoted auxiliary device 5, and auxiliary device 5 is used for promoting stirring vane 32 pivoted auxiliary blade 52 including the auxiliary rod 51 of being connected with valve body 1 and setting on auxiliary rod 51, and this auxiliary device 5's design can be when agitating unit 3 is located the inboard, and liquid can not fully drive stirring vane 32 when too little and rotate, at this moment drives auxiliary blade 52 rotatory through liquid, drives stirring vane 32 rotatory through auxiliary blade 52.

Above only the utility model discloses an it is preferred embodiment, the utility model discloses a scope of protection not only limits in above-mentioned embodiment, and the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims

1. A micro-resistance slow-closing high-pressure check valve is characterized in that: the valve comprises a valve body (1), a water inlet channel (11) and a water outlet channel (12) which are communicated with each other and are arranged at the left end and the right end of the valve body (1), a valve seat (13) arranged between the water inlet channel (11) and the water outlet channel (12), and a valve cover (14) hermetically arranged at the top of the valve body (1), wherein a valve rod (15) is rotatably connected above the valve seat (13), the valve rod (15) is arranged along the width direction of the valve body (1), a valve clack (16) capable of forming sealing opening and closing with the valve seat (13) is fixedly connected on the valve rod (15), and a slow closing device (2) which is matched with the valve clack (16) to realize slow closing is arranged below the valve seat (;

the slow closing device (2) comprises a cylinder sleeve (21) embedded in a valve body (1), a piston (22) capable of being abutted against a valve clack (16) is arranged in the cylinder sleeve (21), an opening of the cylinder sleeve (21) is blocked by a support (24), an adjusting rod (23) abutted against the piston (22) is arranged in the cylinder sleeve (21), a through channel (241) for the adjusting rod (23) to pass through is arranged on the support (24), the adjusting rod (23) passes through the through channel (241) and is arranged in an outward extending manner, a hexagon nut (26) for adjusting the movement of the piston (22) in the cylinder sleeve (21) is screwed on the outer part of the support (24), an external pipeline (41) is arranged between a water inlet channel (11) and an inner cavity of the cylinder sleeve (21), and an adjusting valve (4) for controlling the flow rate of liquid flowing into the external pipeline (41) is arranged on the valve body (1), when water enters the water inlet channel (11), the external pipeline (41) flows in liquid to press the piston (22) to move towards the valve clack (16);

the below of disk seat (13) is provided with a plurality of agitating unit (3), agitating unit (3) including puddler (31) be connected with valve body (1) and set up on puddler (31) and be used for carrying out stirring to piston (22) week side stirring vane (32), can drive stirring vane (32) rotation and stirring vane (32) can be scraped with the lateral wall of piston (22) and the inside wall of valve body (1) under the flow of liquid when intaking in inhalant canal (11).

2. The high pressure check valve of claim 1, further comprising: the support (24) is in threaded connection with the valve body (1) through a plurality of inner hexagonal cylindrical screws (25).

3. The high pressure check valve of claim 1, further comprising: an abutting nut (27) for abutting against the piston (22) is arranged on the adjusting rod (23).

4. The high pressure check valve of claim 1, further comprising: o-shaped sealing rings (28) are arranged between the adjusting rod (23) and the support (24), between the piston (22) and the cylinder sleeve (21), between the cylinder sleeve (21) and the support (24) and between the cylinder sleeve and the valve body (1).

5. The high pressure check valve of claim 1, further comprising: the valve cover (14) is in threaded connection with the valve body (1) through a plurality of locking bolts (141), and a sealing gasket (142) is arranged at the joint of the valve cover (14) and the valve body (1).

6. The high pressure check valve of claim 1, further comprising: be provided with installation passageway (17) that supply valve rod (15) to install into in valve body (1) on valve body (1), be provided with installation piece (18) that are used for shutoff installation passageway (17) on valve body (1), be provided with on valve body (1) and supply valve rod (15) one end male first mounting hole (19), be provided with on installation piece (18) and supply valve rod (15) other end male second mounting hole (181), installation piece (18) are through a plurality of construction bolt (182) and valve body (1) threaded connection.

7. The high pressure check valve of claim 1, further comprising: the outer side of the stirring device (3) is provided with an auxiliary device (5) for assisting the stirring device (3) to rotate, and the auxiliary device (5) comprises an auxiliary rod (51) connected with the valve body (1) and an auxiliary blade (52) arranged on the auxiliary rod (51) and used for pushing the stirring blade (32) to rotate.