CN219954330U - Loose joint vertical check valve - Google Patents

Abstract

The utility model relates to the technical field of check valves, in particular to a loose joint vertical check valve. The valve comprises a valve body, two groups of loose joint installation components and two groups of drainage components; two loose joint installation components set up respectively at the both ends of valve body, are provided with two drainage mouths on the valve body, and two drainage components all set up on the valve body and two drainage components communicate with a drainage mouth respectively, and drainage component includes drainage tube, screw rod, changes handle and stagnant water piece, and the drainage tube sets up on the valve body, screw rod and drainage tube threaded connection, and the both ends of screw rod are provided with respectively and change handle and stagnant water piece, and the external diameter of stagnant water piece is greater than the drainage mouth, stagnant water piece and valve body threaded connection. The utility model can not splash the water remained in the water pipe when the check valve is replaced, thereby being convenient for operators to replace the check valve.

Description

Loose joint vertical check valve

Technical Field

The utility model relates to the technical field of check valves, in particular to a loose joint vertical check valve.

Background

The check valve is commonly called as a one-way valve, and is a valve which automatically opens and closes a valve clack by means of the flow of a medium and is used for preventing the medium from flowing backwards. The function of the check valve is to allow the medium to flow in one direction only and to prevent the reverse flow. Typically such valves are automatically operated, with the valve flap opening under the pressure of fluid flowing in one direction; when fluid flows in the opposite direction, the self-weight of the valve clack acts on the valve seat by the pressure of the fluid and the self-weight of the valve clack, thereby cutting off the flow. The check valve is mainly divided into a swing check valve (rotating according to the gravity center) and a lifting check valve (moving along the axis), wherein the lifting check valve is divided into a vertical check valve and a horizontal check valve, and the horizontal check valve is arranged on a horizontal pipeline; a vertical check valve is mounted in the vertical pipe. The check valve may be damaged in parts thereof after a long period of use, and the check valve may be detached for repair or replacement.

The Chinese patent with publication number of CN216200976U discloses a loose joint vertical check valve, through setting up the valve body structure when the seal cover of wherein appears damaging when leaking owing to long-time use, can carry out solitary change to the seal cover, avoid traditional check valve integral type structure, and then can avoid causing the waste of check valve, it is comparatively convenient to use.

However, the above patent suffers from the following disadvantages:

the water remaining in the water pipe during replacement of the check valve can splash out, which prevents an operator from replacing the check valve.

Disclosure of Invention

The utility model aims at solving the problems in the background art, and provides a movable joint vertical check valve which is convenient for an operator to replace a check valve, and the water remained in a water pipe can not splash during replacement.

The technical scheme of the utility model is that the movable joint vertical check valve comprises a valve body, two groups of movable joint installation components and two groups of drainage components; two loose joint installation components set up respectively at the both ends of valve body, are provided with two drainage mouths on the valve body, and two drainage components all set up on the valve body and two drainage components communicate with a drainage mouth respectively, and drainage component includes drainage tube, screw rod, changes handle and stagnant water piece, and the drainage tube sets up on the valve body, screw rod and drainage tube threaded connection, and the both ends of screw rod are provided with respectively and change handle and stagnant water piece, and the external diameter of stagnant water piece is greater than the drainage mouth, stagnant water piece and valve body threaded connection.

Preferably, a water stop plug is arranged at the water outlet of the drainage tube.

Preferably, the valve body includes a valve housing and a check assembly disposed within the valve housing.

Preferably, the check assembly comprises a clamping block, a clamping groove, a check plug, a check block and a spring, wherein the clamping block is arranged on the valve sleeve, the clamping groove is arranged at the center of the clamping block, the check plug is arranged on the clamping groove in a sliding manner, the check block is arranged on the check plug, and the two ends of the spring are respectively connected with the clamping block and the check block.

Preferably, a limiting block is arranged on the check piston and is arranged on the clamping block in a sliding manner.

Preferably, the loose joint installation assembly comprises a connecting sleeve, a sealing ring and a plurality of groups of fastening assemblies, wherein the connecting sleeve is arranged on the valve body, the plurality of groups of fastening assemblies are in threaded connection with the connecting sleeve, the plurality of groups of fastening assemblies surround into a circle, and the sealing ring is arranged on the fastening assemblies.

Preferably, the fastening assembly comprises a guide rod, a fastening block, a connecting block and a fastening bolt, wherein the guide rod is arranged on the connecting sleeve, the guide rod is in sliding connection with the fastening block, the connecting block is arranged on the fastening block, the fastening bolt is in threaded connection with the connecting sleeve, the fastening bolt is in rotary connection with the connecting block, and the sealing ring is arranged on the fastening block.

Compared with the prior art, the utility model has the following beneficial technical effects:

when the check valve is used, the two groups of loose joint installation components are respectively sleeved at the water inlet and outlet pipes, the rotating handle in the drainage component is screwed, the rotating handle drives the screw rod to rotate, so that the water stop block is driven to rotate until the water stop block rotates to the inside of the valve body, and the water stop block can block the drainage port because the outer diameter of the water stop block is larger than the drainage port, namely the check valve can be used as the check valve, and meanwhile, the water stop plug is arranged at the water outlet of the drainage pipe, so that water in the check valve is further prevented from flowing out from the water outlet when the check valve is used. When the check valve needs to be replaced, the water stop plug is firstly taken out, then the rotating handle is reversely rotated, the rotating handle drives the screw rod to reversely rotate, so that the water stop block is rotated out of the valve body, residual water in the check valve can flow out of the drainage tube through the drainage port, and therefore the residual water in the water pipe can not splash during replacement, and an operator can conveniently replace the check valve.

Drawings

FIG. 1 is a schematic diagram of an embodiment of the present utility model;

FIG. 2 is a cross-sectional view of an embodiment of the present utility model;

FIG. 3 is a schematic view of a loose-joint mounting assembly according to an embodiment of the present utility model;

fig. 4 is an enlarged view of the structure at a in fig. 3.

Reference numerals: 1. a valve body; 101. a drainage port; 102. a valve sleeve; 103. a non-return assembly; 1031. a clamping block; 1032. a clamping groove; 1033. a check plug; 1034. a non-return block; 1035. a spring; 1036. a limiting block; 2. a loose joint mounting assembly; 21. connecting sleeves; 22. a fastening assembly; 221. a guide rod; 222. a fastening block; 223. a connecting block; 224. a fastening bolt; 23. a seal ring; 3. a drainage assembly; 31. a drainage tube; 32. a screw; 33. a rotating handle; 34. a water stop block; 35. and a water stop plug.

Detailed Description

Example 1

As shown in fig. 1 to 3, the loose-joint vertical check valve provided in the present embodiment includes a valve body 1, two sets of loose-joint mounting assemblies 2, and two sets of drainage assemblies 3. Two loose joint installation components 2 are arranged at two ends of the valve body 1 respectively, two drainage ports 101 are arranged on the valve body 1, two drainage components 3 are arranged on the valve body 1 and are communicated with one drainage port 101 respectively, each drainage component 3 comprises a drainage tube 31, a screw rod 32, a rotating handle 33 and a water stop block 34, the drainage tube 31 is arranged on the valve body 1, the screw rod 32 is in threaded connection with the drainage tube 31, the rotating handle 33 and the water stop blocks 34 are arranged at two ends of the screw rod 32 respectively, the outer diameter of the water stop blocks 34 is larger than that of the drainage ports 101, and the water stop blocks 34 are in threaded connection with the valve body 1. A water stop plug 35 is arranged at the water outlet of the drainage tube 31.

When the loose-joint vertical check valve is used, the two groups of loose-joint installation components 2 are respectively sleeved at the water inlet and outlet pipes, the rotating handle 33 in the drainage component 3 is screwed, the rotating handle 33 drives the screw rod 32 to rotate, and the water stop block 34 is driven to rotate until the water stop block 34 rotates to the inside of the valve body 1, and the water stop block 34 can block the drainage port 101 because the outer diameter of the water stop block 34 is larger than that of the drainage port 101, namely, the loose-joint vertical check valve can be used as the check valve, and meanwhile, the water stop plug 35 is arranged at the water outlet of the drainage pipe 31, so that water in the check valve is further prevented from flowing out from the water outlet when the check valve is used. When the check valve needs to be replaced, the water stop plug 35 is firstly taken out, the rotating handle 33 is reversely rotated, the rotating handle 33 drives the screw rod 32 to reversely rotate, so that the water stop block 34 is rotated out of the valve body 1, residual water in the check valve can flow out of the drainage tube 31 through the drainage port 101, and therefore the residual water in the water tube can not splash during replacement, and an operator can conveniently replace the check valve.

Example two

As shown in fig. 3, in the present embodiment, compared with the first embodiment, the valve body 1 includes a valve housing 102 and a check assembly 103, and the check assembly 103 is disposed inside the valve housing 102. The check assembly 103 includes a clamping block 1031, a clamping groove 1032, a check block 1033, a check block 1034 and a spring 1035, wherein the clamping block 1031 is arranged on the valve sleeve 102, the clamping block 1032 is arranged at the center of the clamping block 1031, the check block 1033 is slidably arranged on the clamping groove 1032, the check block 1034 is arranged on the check block 1033, and two ends of the spring 1035 are respectively connected with the clamping block 1031 and the check block 1034. The check plug 1033 is provided with a limiting block 1036, and the limiting block 1036 is slidably arranged on the clamping block 1031.

In use, when water flows from the water inlet to the water outlet, i.e., from the check plug 1033 to the check block 1034, the water pushes the check plug 1033 out of the block 1034, thereby pushing the check plug 1033 out of the block 1031, allowing the check plug 1033 to disengage from the slot 1032, allowing water to flow out, and the spring 1035 limits the travel of the movement of the check block 1034. When the water flows in the reverse direction, the water flow applies a force to the check block 1034, so that the check plug 1033 is inserted into the catching groove 1032 by the elastic force and the guide of the spring 1035, thereby preventing the reverse flow of the water flow. Through setting up stopper 1036, under the circumstances of guaranteeing the stagnant flow effect, the further compression of restriction spring improves the life of spring, lets the check valve can use the longer time.

Example III

As shown in fig. 4, in the present embodiment, compared with the first embodiment, the loose-joint vertical check valve provided in the present embodiment, the loose-joint installation assembly 2 includes a connecting sleeve 21, a sealing ring 23, and a plurality of groups of fastening assemblies 22, the connecting sleeve 21 is disposed on the valve body 1, the plurality of groups of fastening assemblies 22 are all screwed with the connecting sleeve 21, the plurality of groups of fastening assemblies 22 are round, and the sealing ring 23 is disposed on the fastening assemblies 22. The fastening assembly 22 comprises a guide rod 221, a fastening block 222, a connecting block 223 and a fastening bolt 224, wherein the guide rod 221 is arranged on the connecting sleeve 21, the guide rod 221 is in sliding connection with the fastening block 222, the connecting block 223 is arranged on the fastening block 222, the fastening bolt 224 is in threaded connection with the connecting sleeve 21, the fastening bolt 224 is in rotary connection with the connecting block 223, and the sealing ring 23 is arranged on the fastening block 222.

When the check valve is installed, the sealing ring 23 is sleeved on the outer side of the inlet and outlet water pipe, then the fastening bolt 224 is rotated, and the fastening block 222 is fastened in the direction of the sealing ring 23 under the guiding action of the guide rod 221 by the fastening bolt 224, so that the inlet and outlet water pipe is fastened and connected with the sealing ring 23, and the check valve is prevented from falling off in use. And when the check valve is replaced, the water inlet and outlet pipe and the sealing ring 23 can be separated only by unscrewing the fastening bolt 224, and the installation and the disassembly are convenient.

The embodiments of the present utility model have been described in detail with reference to the drawings, but the present utility model is not limited thereto, and various changes can be made within the knowledge of those skilled in the art without departing from the spirit of the present utility model.

Claims (7)

1. The loose-joint vertical check valve is characterized by comprising a valve body (1), two groups of loose-joint installation components (2) and two groups of drainage components (3);

two sets of loose joint installation components (2) set up the both ends at valve body (1) respectively, be provided with two drainage mouth (101) on valve body (1), two sets of drainage components (3) all set up on valve body (1) and two sets of drainage components (3) communicate with a drainage mouth (101) respectively, drainage components (3) include drainage tube (31), screw rod (32), change handle (33) and stagnant water piece (34), drainage tube (31) set up on valve body (1), screw rod (32) and drainage tube (31) threaded connection, the both ends of screw rod (32) are provided with change handle (33) and stagnant water piece (34) respectively, the external diameter of stagnant water piece (34) is greater than drainage mouth (101), stagnant water piece (34) and valve body (1) threaded connection.

2. A loose-joint vertical check valve according to claim 1, characterized in that a water stop (35) is provided at the water outlet of the draft tube (31).

3. A loose-joint vertical check valve according to claim 1, characterized in that the valve body (1) comprises a valve sleeve (102) and a check assembly (103), the check assembly (103) being arranged inside the valve sleeve (102).

4. The loose-joint vertical check valve according to claim 3, wherein the check assembly (103) comprises a clamping block (1031), a clamping groove (1032), a check plug (1033), a check block (1034) and a spring (1035), the clamping block (1031) is arranged on the valve sleeve (102), the clamping groove (1032) is arranged in the center of the clamping block (1031), the check plug (1033) is slidably arranged on the clamping groove (1032), the check block (1034) is arranged on the check plug (1033), and two ends of the spring (1035) are respectively connected with the clamping block (1031) and the check block (1034).

5. The loose-joint vertical check valve according to claim 4, wherein a stopper (1036) is provided on the check plug (1033), and the stopper (1036) is slidably provided on the block (1031).

6. The loose-joint vertical check valve according to claim 1, characterized in that the loose-joint installation component (2) comprises a connecting sleeve (21), a sealing ring (23) and a plurality of groups of fastening components (22), the connecting sleeve (21) is arranged on the valve body (1), the plurality of groups of fastening components (22) are in threaded connection with the connecting sleeve (21), the plurality of groups of fastening components (22) surround into a circle, and the sealing ring (23) is arranged on the fastening components (22).

7. The loose-joint vertical check valve according to claim 6, wherein the fastening assembly (22) comprises a guide rod (221), a fastening block (222), a connecting block (223) and a fastening bolt (224), the guide rod (221) is arranged on the connecting sleeve (21), the guide rod (221) is slidably connected with the fastening block (222), the connecting block (223) is arranged on the fastening block (222), the fastening bolt (224) is in threaded connection with the connecting sleeve (21) and the fastening bolt (224) is in rotary connection with the connecting block (223), and the sealing ring (23) is arranged on the fastening block (222).