CN218207832U

CN218207832U - Stop valve

Info

Publication number: CN218207832U
Application number: CN202222616615.XU
Authority: CN
Inventors: 殷明
Original assignee: Anhui Heidelo Fluid Equipment Co ltd
Current assignee: Anhui Heidelo Fluid Equipment Co ltd
Priority date: 2022-09-30
Filing date: 2022-09-30
Publication date: 2023-01-03
Anticipated expiration: 2032-09-30

Abstract

The utility model discloses a stop valve, including the valve body, with the top cap screw thread of valve body connects soon and the bottom is vertical to run through and extends to the inside screw valve rod of valve body with install the last valve clack of screw valve rod bottom, go up the valve clack with the connection can be dismantled to the screw valve rod, the below of going up the valve clack is provided with down the valve clack, down the valve clack with be provided with the extrusion between the valve body the valve clack upwards with the elastic component of the sealed face elasticity butt of disk seat down, go up the valve clack with be provided with drive assembly down between the valve clack. The utility model discloses in, demolish the back with the top cap of valve body, dismantle the separation with screw valve rod and last lamella again, at this moment, the sealed shutoff piece that undertakes the valve body by lower valve clack realizes the shutoff to the valve body and closes to need not to close the maintenance that the main valve can realize valve body on this lateral conduit, solved under the normal operating that does not influence other branch road pipelines, also can realize the problem of valve body maintenance on the branch road pipeline.

Description

Stop valve

Technical Field

The utility model relates to the technical field of valves, especially, relate to a stop valve.

Background

Valves are plumbing accessories used to open and close a pipe, control flow direction, regulate and control parameters of the transport medium (temperature, pressure and flow). According to the function, the valve can be divided into a shut-off valve, a check valve, a regulating valve and the like, wherein the shut-off valve is also called a stop valve and is one of the most widely used valves.

The valve rod of the stop valve is mostly a screw rod type valve rod, the screw rod type valve rod is screwed with the top cover at the top of the valve body, the rotating screw rod type valve rod rotates to drive the valve clack to move up and down to realize the opening or closing of the valve, the problem that the sealing performance is reduced due to sliding wires and other problems often between the screw rod type valve rod and the top cover of the valve body, thereby when the valve body is opened, media in the valve body overflow outwards from the joint of the screw rod type valve rod and the bottom cover of the valve body, at the moment, after the mounting flange between the valve body and the valve cover is required to be dismounted, the top cover and the screw rod type valve rod of the valve body are dismounted and replaced, after the valve body top cover and the screw rod type valve rod are dismounted, the valve clack is difficult to seal the inside of the valve body, thereby the valve of a superior pipeline of the valve body is required to be closed, if the valve body is mounted on a branch pipeline, most of the valve on the superior main pipeline controls the medium circulation of a plurality of branch pipelines, when the valve body is maintained, the superior valve is closed, the normal operation of other branch pipelines is difficult to be maintained, and the problem of the valve body on the branch pipelines can also be maintained can be realized without being maintained.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide an: the stop valve is provided for solving the problem that the maintenance of the valve body on the branch pipeline can be realized without influencing the normal operation of other branch pipelines.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a stop valve comprises a valve body, a screw rod type valve rod and an upper valve clack, wherein the screw rod type valve rod is in threaded connection with a top cover of the valve body, the bottom of the screw rod type valve rod vertically penetrates through the screw rod type valve rod and extends into the valve body, the upper valve clack is detachably connected with the screw rod type valve rod, a lower valve clack is arranged below the upper valve clack, an elastic assembly which extrudes the lower valve clack to be upwards elastically abutted to a sealing surface of a valve seat is arranged between the lower valve clack and the valve body, a driving assembly is arranged between the upper valve clack and the lower valve clack, and the driving assembly drives the lower valve clack to be downwards separated from the sealing surface of the valve seat in the process of upwards separating the upper valve clack from the sealing surface of the valve seat.

As a further description of the above technical solution:

the screw type valve rod is connected with the upper valve clack in a detachable rotating mode, the driving assembly comprises an upper rack fixed to the bottom of the upper valve clack, a gear meshed with the upper rack is arranged inside the valve body, and a cam which drives the lower valve clack to move downwards is coaxially and fixedly connected to the gear in a rotating mode.

As a further description of the above technical solution:

the top of the upper valve clack is fixedly connected with a positioning block used for enabling the upper valve clack to move upwards to the limit position, and when the upper valve clack moves upwards to the limit position, the upper rack and the gear are in an engaged state.

As a further description of the above technical solution:

the elastic assembly includes an extrusion spring elastically extruding the lower valve flap to move upward.

As a further description of the above technical solution:

the lower valve clack is connected with the bottom of the inner side of the valve body through a telescopic rod, and the extrusion spring is sleeved outside the telescopic rod.

As a further description of the above technical solution:

the fixed diameter that has in bottom of screw valve rod is greater than the connection carousel of screw valve rod diameter, the top fixedly connected with of going up the valve clack is followed the axis of connecting the carousel is two limiting plates of symmetric distribution, two the limiting plate is close to one side of connecting the carousel is right angle indent structure, just the indent horizontal end and the vertical end of indent of limiting plate respectively with the top and the outside laminating of connecting the carousel.

To sum up, owing to adopted above-mentioned technical scheme, the beneficial effects of the utility model are that:

when the maintenance of top cap and screw valve rod is dismantled, rotate the screw valve rod earlier, make upper valve clack and valve seat sealing surface support tightly, at this moment, lower valve clack also upwards supports tightly with the valve seat sealing surface under elastic component's effect, demolish the back with the top cap of valve body, dismantle the separation with screw valve rod and upper valve clack again, at this moment, upper valve clack is after losing screw valve rod's support, do not as the sealed shutoff piece of valve body, the sealed shutoff piece that bears the valve body by lower valve clack realizes the shutoff to the valve body and closes, thereby need not to close the maintenance of valve body on this lateral line, solved under the normal operating that does not influence other branch road pipelines, also can realize the problem of valve body maintenance on the branch road pipeline.

Drawings

Fig. 1 shows a schematic perspective view according to the present invention;

fig. 2 shows a schematic cross-sectional structure of the open state according to the invention;

FIG. 3 is a schematic view of a part A of the enlarged structure of FIG. 2;

fig. 4 shows a schematic cross-sectional structural view of a closed state according to the invention;

fig. 5 is a schematic view showing a connection three-dimensional structure of an upper valve clack and a screw-type valve rod provided according to an embodiment of the present invention;

illustration of the drawings:

1. a valve body; 2. a screw-type valve stem; 201. connecting the rotary table; 3. a telescopic rod; 4. a compression spring; 5. positioning a block; 6. a gear; 7. an upper valve flap; 701. a limiting plate; 8. an upper rack; 9. a lower valve clack; 10. a cam.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without making creative efforts belong to the protection scope of the present invention.

Referring to fig. 1-4, the present invention provides a technical solution: the utility model provides a stop valve, which comprises a valve body 1, connect soon with the top cap screw thread of valve body 1 and the vertical screw valve rod 2 that runs through to extend to 1 inside of valve body and install the last lamella 7 in screw valve rod 2 bottom of bottom, go up lamella 7 and screw valve rod 2 can dismantle and be connected, the below of going up lamella 7 is provided with down valve clack 9, be provided with the elastic component of extrusion lower valve clack 9 upwards with the sealed face elasticity butt of disk seat between lower valve clack 9 and the valve body 1, go up and be provided with drive assembly between lamella 7 and the lower valve clack 9, go up lamella 7 upwards with the sealed face separation process of disk seat, the drive assembly drive lower valve clack 9 is downwards with the sealed face separation of disk seat.

When the maintenance of carrying out top cap and screw valve rod 2 is dismantled, rotate screw valve rod 2 earlier, make and go up valve clack 7 and the sealed face of disk seat support tightly, this moment, lower valve clack 9 also upwards supports tightly with the sealed face of disk seat under elastic component's effect, demolish the back with the top cap of valve body 1, dismantle screw valve rod 2 and last valve clack 7 and separate again, this moment, go up valve clack 7 after losing screw valve rod 2's support, do not regard as the sealed shutoff piece of valve body 1, the sealed shutoff piece of valve body 1 is realized the shutoff by lower valve clack 9 undertakes and is closed to valve body 1, thereby need not to close the maintenance that total valve can realize on this bleeder way valve body 1, and, this application adopts the mode of the dual shutoff of upper valve clack 7 and lower valve clack 9, the leakproofness under the closure state of valve body 1 has been promoted.

Specifically, as shown in fig. 2-4, the screw-type valve rod 2 is detachably and rotatably connected with the upper valve flap 7, the driving assembly includes an upper rack 8 fixed at the bottom of the upper valve flap 7, a gear 6 meshed with the upper rack 8 is arranged inside the valve body 1, a cam 10 which rotatably drives the lower valve flap 9 to move downwards is coaxially and fixedly connected to the gear 6, a positioning block 5 which is used for enabling the upper valve flap 7 to move upwards to a limit position is fixedly connected to the top of the upper valve flap 7, and when the upper valve flap 7 moves upwards to the limit position, the upper rack 8 and the gear 6 are in a meshed state.

The upper valve clack 7 is driven to move upwards through the rotation of the screw type valve rod 2, the upper rack 8 and the gear 6 are driven to be in meshing transmission, the cam 10 is driven to rotate, the lower valve clack 9 is extruded to move downwards when the cam 10 rotates, the upper valve clack 7 and the lower valve clack 9 are both separated from the sealing plugging piece, the valve body 1 is opened, the limit position of the upward movement of the upper valve clack 7 is limited through the positioning block 5, when the upper valve clack 7 moves upwards to the limit position, the upper rack 8 and the gear 6 are still in a meshing state, the upper valve clack 7 can be kept still under the screwing of the screw type valve rod 2 and a top cover of the valve body 1, the upper rack 8 also keeps a still state, the upper rack 8 can limit the gear 6, the gear 6 and the cam 10 are prevented from rotating, the lower valve clack 9 is further prevented from moving, in the actual operation, the initial angle of the cam 10 can be adjusted, after the upper valve clack 7 moves upwards for a certain distance, the bulge of the cam 10 is abutted to the lower valve clack 9, the lower valve clack 9 is pushed to open, the upper valve clack 7 and the lower valve clack 7 is opened, the upper valve clack 7 and the lower valve body is closed tightly, and the sealing piece is closed, and the lower valve body is closed stably closed at intervals, and the lower sealing piece in the tight sealing process.

Specifically, as shown in fig. 2, the elastic component includes an extrusion spring 4 that elastically extrudes the lower valve flap 9 to move upward, the lower valve flap 9 is connected with the bottom of the inner side of the valve body 1 through the telescopic rod 3, and the extrusion spring 4 is sleeved outside the telescopic rod 3.

Through the setting of telescopic link 3, valve clack 9 steadily reciprocates under the guarantee, and the setting of extrusion spring 4 promotes the upwards elastic movement of valve clack 9 down.

Specifically, as shown in fig. 5, the bottom of the screw valve rod 2 is fixed with the connecting turntable 201 with a diameter larger than the diameter of the screw valve rod 2, the top fixedly connected with of the upper valve flap 7 is two limiting plates 701 symmetrically distributed along the axis of the connecting turntable 201, one side of the two limiting plates 701 close to the connecting turntable 201 is a right-angle concave structure, and the concave horizontal end and the concave vertical end of the limiting plates 701 are respectively attached to the top and the outer side of the connecting turntable 201.

Two limiting plates 701 are close to one side of connecting carousel 201 and are right angle indent structure to limiting plate 701 does not hinder and connects carousel 201 and rotate, and just the connection carousel 201 restriction with screw valve rod 2 bottom between two limiting plates 701 and last lamella 7, dismantle the back with the flange bolt of valve body 1 and top cap, drive top cap and screw valve rod 2 and slide, make connection carousel 201 and limiting plate 701 slip separation, can realize screw valve rod 2 and last lamella 7's split, the efficiency of dismouting has been ensured.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The stop valve comprises a valve body (1), a screw-type valve rod (2) screwed with a top cover of the valve body (1) in a threaded manner, and an upper valve clack (7) installed at the bottom of the screw-type valve rod (2), wherein the bottom of the screw-type valve rod vertically penetrates through the screw-type valve rod (2) and extends to the inside of the valve body (1), the upper valve clack (7) is detachably connected with the screw-type valve rod (2), a lower valve clack (9) is arranged below the upper valve clack (7), an elastic assembly used for extruding the lower valve clack (9) to be upwards elastically abutted against a valve seat sealing surface is arranged between the lower valve clack (9) and the valve body (1), a driving assembly is arranged between the upper valve clack (7) and the lower valve clack (9), and in the process that the upper valve clack (7) is upwards separated from the valve seat sealing surface, the driving assembly drives the lower valve clack (9) to be downwards separated from the valve seat sealing surface.

2. A stop valve as claimed in claim 1, characterized in that said screw stem (2) is removably and rotatably connected to said upper flap (7), said drive assembly comprising an upper rack (8) fixed to the bottom of the upper flap (7), said valve body (1) having, inside it, a gear (6) meshing with said upper rack (8), said gear (6) being coaxially and fixedly connected to a cam (10) for rotatably driving said lower flap (9) in a downward direction.

3. A stop valve according to claim 2, characterized in that a positioning block (5) for moving the upper valve flap (7) upwards to the limit position is fixedly connected to the top of the upper valve flap (7), and when the upper valve flap (7) is moved upwards to the limit position, the upper rack (8) and the gear (6) are in an engaged state.

4. A stop valve according to claim 1, characterized in that the resilient assembly comprises a pressing spring (4) resiliently pressing the lower flap (9) upwards.

5. A stop valve according to claim 4, characterized in that the lower flap (9) is connected to the inner bottom of the valve body (1) via a telescopic rod (3), the compression spring (4) being fitted around the outside of the telescopic rod (3).

6. The stop valve of claim 1, characterized in that the fixed connection carousel (201) that has the diameter to be greater than screw valve rod (2) diameter in the bottom of screw valve rod (2), the top fixedly connected with of upper valve clack (7) is followed two limiting plate (701) that the axis of connecting carousel (201) is the symmetric distribution, two limiting plate (701) are close to one side of connecting carousel (201) is right angle indent structure, just the indent horizontal end and the indent vertical end of limiting plate (701) respectively with the top and the outside laminating of connecting carousel (201).