CN218761620U

CN218761620U - Check valve with function of damming

Info

Publication number: CN218761620U
Application number: CN202223154459.6U
Authority: CN
Inventors: 蔡志伟; 陈助泉
Original assignee: Jilin Province Yuanyuan Intelligent Equipment Manufacturing Co ltd
Current assignee: Jilin Province Yuanyuan Intelligent Equipment Manufacturing Co ltd
Priority date: 2022-11-28
Filing date: 2022-11-28
Publication date: 2023-03-28
Anticipated expiration: 2032-11-28

Abstract

A check valve with a flow stopping function comprises a check valve body, the top of the outer wall of the check valve body is fixedly connected with a check valve cover through screws, the inner wall of the check valve cover is rotatably connected with a hand wheel through a sealing bearing, the bottom rigid coupling of hand wheel has the screw rod, the outer wall of screw rod is provided with cut-off equipment, the inside of check valve body is connected with the arc pole rotation through the round pin axle. Through the hand wheel, the screw rod, the nut, branch, piston and the cooperation between the valve clack that dams, the screw rod can make the nut move down, the nut promotes branch downstream, branch drives the piston slow movement, the piston drives the valve clack that dams simultaneously and removes, the valve clack that dams can cut the check valve body when moving to the below, thereby cut the flow of liquid, the realization is to the function of damming of liquid, thereby the safety isolation performance of check valve has been improved, need not use with the valve is supporting with the shut-off valve, the use cost of check valve has been reduced, the check valve must application range has been increased.

Description

Check valve with function of damming

Technical Field

The utility model relates to a check valve technical field especially relates to a check valve with function dams.

Background

The check valve is a valve with a circular valve clack and acts by self weight and medium pressure to block the medium from flowing backwards.

However, when the existing check valve is used, the check valve can only prevent the backflow of liquid when the liquid stops flowing, and has a non-return function, the check valve cannot cut off the water flow, that is, the check valve does not have a flow stopping function, so that the safety isolation performance of the check valve is poor, and most of the check valves need to be used with a flow stopping valve in a matched manner to play a safety isolation role when in use.

Disclosure of Invention

The utility model discloses solve the problem that above-mentioned prior art exists, provide a check valve with function of damming for current check valve has the function of damming, thereby has improved the safety isolation performance of check valve, is not in needs and the supporting use of stop valve, has reduced the use cost of check valve, has increased check valve and has got application range.

The utility model provides a technical scheme that its technical problem adopted: the check valve with the flow-stopping function comprises a check valve body, the top of the outer wall of the check valve body is fixedly connected with a check valve cover through screws, the inner wall of the check valve cover is rotatably connected with a hand wheel through a sealing bearing, the bottom rigid coupling of hand wheel has the screw rod, the outer wall of screw rod is provided with cut-off equipment, the inside of check valve body is connected with the arc pole rotation through the round pin axle.

In order to further perfect, cut-off equipment includes nut, branch, piston and the valve clack that dams, the inner wall and the screw rod threaded connection of nut, the bottom rigid coupling of nut has two branches, two the bottom of branch all with piston looks rigid coupling, the outer wall and the check valve body of piston closely laminate, the bottom rigid coupling of piston has the valve clack that dams, one side and the check valve body of valve clack laminate mutually.

Further perfect, the one end rigid coupling of arc pole has the check valve clack, the outer wall and the check valve body of check valve clack laminate mutually.

Further perfection, the equal rigid coupling in outer wall both ends of check valve body has the flange.

Further perfect, two the inside of flange all closely laminates with sealed the pad, sealed the pad is made by rubber materials, the shape of sealed pad is the ring shape.

Further perfect, two equal rigid couplings in one side of flange have the water pipe.

The utility model discloses profitable effect is: the utility model discloses, through the hand wheel, the screw rod, the nut, branch, piston and the cooperation between the valve clack that dams, the user is through rotating the hand wheel, the hand wheel drives the screw rod and rotates, the screw rod can make the nut move down, the nut promotes branch downstream, branch drives piston slow movement, the piston drives the valve clack that dams simultaneously and removes, the valve clack that dams can cut the check valve body when removing the below, thereby cut the flow of liquid, realize the function of damming to liquid, thereby the safety isolation performance of check valve has been improved, need not use with the valve is supporting, the use cost of check valve has been reduced, the check valve must application range has been increased.

Drawings

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

FIG. 2 is a schematic front plan view of the internal connection structure of FIG. 1;

FIG. 3 is a schematic view of the connection structure at A in FIG. 2;

fig. 4 is a schematic view of the connection structure at B in fig. 2.

Description of reference numerals: 1. check valve body, 2, check valve cover, 3, cut-off equipment, 301, nut, 302, branch, 303, piston. 304. The device comprises a closure valve clack, 4, an auxiliary device, 401, a spring, 5, an arc-shaped rod, 6, a check valve clack, 7, a flange, 8, a sealing gasket, 9, a water pipe, 10, a hand wheel, 11 and a screw rod.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings:

example 1:

referring to fig. 1-4, in the present embodiment: a check valve with a flow stopping function comprises a check valve body 1, the top of the outer wall of the check valve body 1 is fixedly connected with a check valve cover 2 through screws, the check valve cover 2 can be disassembled through screwing the screws, the inner wall of the check valve cover 2 is rotatably connected with a hand wheel 10 through a sealing bearing, the check valve cover 2 rotatably supports the hand wheel 10 through the sealing bearing, the bottom rigid coupling of hand wheel 10 has screw rod 11, and hand wheel 10 drives screw rod 11 and rotates, and the outer wall of screw rod 11 is provided with the cut-off equipment 3 that is used for cuting rivers, and the inside of check valve body 1 rotates with arc pole 5 through the round pin axle to be connected, and arc pole 5 rotates along the junction with check valve body 1.

Referring to fig. 2 and 3, the cut-off device 3 includes a nut 301, a support rod 302, a piston 303 and a cut-off valve flap 304, the inner wall of the nut 301 is in threaded connection with the screw 11, the nut 301 moves up and down when the screw 11 rotates, the bottom of the nut 301 is fixedly connected with the two support rods 302, the nut 301 pushes the support rods 302 to move, the bottoms of the two support rods 302 are fixedly connected with the piston 303, the support rods 302 push the piston 303 to move, the outer wall of the piston 303 is tightly attached to the check valve body 1, the piston 303 can move up and down slowly along the inside of the check valve body 1, the bottom of the piston 303 is fixedly connected with the cut-off valve flap 304, the piston 303 drives the cut-off valve flap 304 to move up and down, one side of the cut-off valve flap 304 is attached to the check valve body 1, and the cut off liquid flowing in the check valve body 1;

the user is through rotating hand wheel 10, hand wheel 10 drives screw rod 11 and rotates, screw rod 11 can make nut 301 remove downwards, nut 301 promotes branch 302 and removes downwards, branch 302 drives piston 303 slow moving, piston 303 drives the valve clack 304 that dams simultaneously and removes, the valve clack 304 that dams can cut check valve body 1 when removing the below, thereby cut the flow of liquid, the realization is to the function of damming of liquid, thereby the safety isolation performance of check valve has been improved, need not use with the valve is supporting, the use cost of check valve has been reduced, the check valve must application range has been increased.

The one end rigid coupling of arc pole 5 has non return valve clack 6, non return valve clack 6 drives arc pole 5 and rotates, non return valve clack 6's outer wall and check valve body 1 laminate mutually, current non return valve clack 6's position, be in the liquid circulation state, the equal rigid coupling in outer wall both ends of check valve body 1 has flange 7, check valve body 1 passes through flange 7 and water pipe 9 looks rigid coupling, the inside of two flange 7 all with sealed pad 8 closely laminate, sealed pad 8 is made by rubber materials, the shape of sealed pad 8 is ring shape, the equal rigid coupling in one side of two flange 7 has water pipe 9.

The working principle is as follows:

this check valve with function of damming when using, at first, the user passes through flange 7 and outside water pipe 9 looks rigid coupling with check valve body 1, because sealed pad 8 is rubber materials, certain deformability has, make the laminating between flange 7 and sealed pad 8 inseparabler, for sealing, when liquid gets into check valve body 1 from the right side, liquid pressure can make check valve flap 6 turn to current position (position in the schematic drawing), realize the circulation of liquid, when liquid stops circulating, liquid is not making check valve flap 6, check valve flap 6 can be under the effect of gravity, drive arc pole 5 along with the junction clockwise rotation with check valve body 1, make check valve flap 6 laminate with check valve body 1, realize the function of preventing the liquid backward flow, when needing to cut liquid, the user is through rotating hand wheel 10, hand wheel 10 drives screw 11 to rotate, screw 11 can make nut 301 move down, nut 301 promotes branch 302 to move down, branch 302 drives piston 303 to move slowly, piston 303 drives valve flap 304 to move simultaneously, valve flap 304 can move check valve body 1 when cutting the below, thereby realize the function of liquid, thereby the use of the safety of the check valve increases the cost of using of this check valve, thereby the matching use of the shutoff valve, the cost of the shutoff valve is not increased.

Example 2:

referring to fig. 2 and 4, in the present embodiment: a check valve with a flow stopping function is disclosed, wherein an auxiliary device 4 is further arranged at the top of an arc-shaped rod 5, the auxiliary device 4 comprises a spring 401, one end of the spring 401 is rotatably connected with the arc-shaped rod 5 through a pin shaft, the arc-shaped rod 5 can compress the spring 401 when rotating upwards, the spring 401 is currently in a compression state, the other end of the spring 401 is rotatably connected with a check valve body 1 through a pin shaft, the elastic coefficient of the spring 401 is 10-20N/cm, the spring 401 is made of austenite type and precipitation hardening type stainless steel materials, and the check valve has the capabilities of rust prevention and corrosion resistance;

when the liquid inside check valve body 1 circulates, can make check valve clack 6 anticlockwise rotation, check valve clack 6 drives arc pole 5 and rotates along the junction with check valve body 1, and arc pole 5 can compress spring 401 simultaneously, and when liquid was not circulating, utilize spring 401's elasticity and check valve clack 6's gravity, under the dual effort, make check valve clack 6 clockwise rotation's speed down faster, it is closed faster.

The working principle is as follows:

when this auxiliary device 4 uses, when the inside liquid circulation of check valve body 1, can make check valve clack 6 anticlockwise rotation, check valve clack 6 drives arc pole 5 and rotates along the junction with check valve body 1, and arc pole 5 can compress spring 401 simultaneously, and when liquid is not circulating, utilizes spring 401's elasticity and check valve clack 6's gravity, under the dual effort for check valve clack 6 speed clockwise rotation downwards is faster, and is closed faster, accomplishes the use of this time device.

While the invention has been shown and described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the scope of the appended claims.

Claims

1. The utility model provides a check valve with function dams, includes check valve body (1), characterized by: the top of the outer wall of the check valve body (1) is fixedly connected with the check valve cover (2) through screws, the inner wall of the check valve cover (2) is rotatably connected with a hand wheel (10) through a sealing bearing, the bottom rigid coupling of hand wheel (10) has screw rod (11), the outer wall of screw rod (11) is provided with cut-off equipment (3), the inside of check valve body (1) is connected with arc pole (5) rotation through the round pin axle.

2. The check valve with shut-off function according to claim 1, wherein: cut-off equipment (3) include nut (301), branch (302), piston (303) and cut-off valve clack (304), the inner wall and screw rod (11) threaded connection of nut (301), the bottom rigid coupling of nut (301) has two branch (302), two the bottom of branch (302) all with piston (303) looks rigid coupling, the outer wall and the check valve body (1) of piston (303) closely laminate, the bottom rigid coupling of piston (303) has cut-off valve clack (304), one side and check valve body (1) of cut-off valve clack (304) laminate mutually.

3. The check valve with shut-off function according to claim 1, wherein: one end rigid coupling of arc pole (5) has check valve clack (6), the outer wall and the laminating of check valve body (1) of check valve clack (6) mutually.

4. The check valve with shut-off function according to claim 1, wherein: and flanges (7) are fixedly connected to two ends of the outer wall of the check valve body (1).

5. The check valve with shut-off function according to claim 4, wherein: two the inside of flange (7) all closely laminates with sealed pad (8), sealed pad (8) are made by rubber materials, the shape of sealed pad (8) is the ring shape.

6. The check valve with shut-off function according to claim 4, wherein: and one side of each of the two flanges (7) is fixedly connected with a water pipe (9).