CN220378957U

CN220378957U - Check valve

Info

Publication number: CN220378957U
Application number: CN202221589452.4U
Authority: CN
Inventors: 吴占林; 吴辉兴
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-06-23
Filing date: 2022-06-23
Publication date: 2024-01-23
Anticipated expiration: 2032-06-23

Abstract

The application relates to the field of valves and discloses a check valve, including the valve body, the both ends of valve body communicate respectively has inlet tube and outlet pipe, is provided with the shutoff piece in the valve body, and the inlet tube internal fixation is provided with the dead lever, is provided with the elastic component on the dead lever, and the one end and the shutoff piece fixed connection and the drive shutoff piece butt of dead lever are kept away from to the elastic component on the inlet tube. The check valve can be opened and closed by using the elastic piece and the sealing piece, so that the check valve is not easily affected by rust, and the effect of improving the difficulty in opening and closing of the check valve caused by rust of the check valve is achieved.

Description

Check valve

Technical Field

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

Background

The check valve is a valve with a circular valve clack and used for blocking the backflow of medium by the action of self weight and medium pressure, and belongs to automatic valves, which are also called check valve, one-way valve, reflux valve or isolation valve.

At present, the valve clack motion mode of check valve is divided into over-and-under type and swing type, and over-and-under type check valve includes valve body and valve clack, and valve clack slidable mounting is in the valve body, and the water inlet height of valve body is less than the height of delivery port, and the medium flows in from lower water inlet, flows out from higher delivery port, and when water inlet pressure was greater than valve clack weight, the valve clack was pushed by the medium and is slided and make the valve open, otherwise, and the valve is then closed when the medium refluxes.

The swing check valve comprises a valve body and a valve clack, wherein the top of the valve clack is hinged with the valve body, the valve clack is rotatably arranged in the valve body, the principle of the rotary check valve is similar to that of the lifting check valve, the valve clack is pushed by a medium to rotate so as to open the valve, and the valve is closed by rotating the valve clack when the medium flows backwards.

For the related art, the valve body and the valve clack of the check valve are mostly made of cast iron materials, and are easy to oxidize and rust after being soaked in a liquid medium for a long time, so that the valve clack is blocked when sliding or rotating, when the check valve is applied to a medium with smaller flow, the pressure at the water inlet of the check valve is limited, so that the valve is not easy to open, and when the valve needs to be closed, the valve clack slides or rotates at a slower speed, so that the medium is easy to return, and the inventor considers that the defect that the check valve is not easy to open and close due to the rust of the check valve exists.

Disclosure of Invention

In order to solve the problem that the check valve is not easy to open and close due to rust of the check valve, the application provides the check valve.

The application provides a check valve adopts following technical scheme:

the utility model provides a check valve, includes the valve body, and the both ends of valve body communicate respectively has inlet tube and outlet pipe, be provided with the shutoff piece in the valve body, the inlet tube internal fixation is provided with the dead lever, be provided with the elastic component on the dead lever, the one end and the shutoff piece fixed connection and the drive shutoff piece butt of dead lever are kept away from to the elastic component on the inlet tube.

Through adopting above-mentioned technical scheme, the medium gets into the valve body from the inlet tube, and when the pressure of water inlet department was greater than the elastic force of elastic component, the medium promoted the shutoff piece and removed the shutoff of shutoff piece to the inlet tube to open the valve, when the pressure of water inlet department was less than the elastic force of elastic component, the elastic component promoted the shutoff piece and removed and made the shutoff piece carry out the shutoff to the inlet tube towards the inlet tube, thereby closed the valve. By the arrangement, the check valve is opened and closed by adopting the elastic piece and the plugging piece, so that the check valve is not easily affected by rust.

Preferably, the water inlet pipe and the water outlet pipe are plastic pipes, the fixing rod is a screw, and the fixing rod thread penetrates through the water inlet pipe and is abutted against the inner wall of the water inlet pipe.

Through adopting above-mentioned technical scheme, rotate the dead lever and can install the dead lever in the inlet tube, the dead lever passes the tip of elastic component, and the dead lever butt makes the elastic component be difficult for the slippage on the inner wall of inlet tube. The check valve is arranged in such a way that the production cost of the check valve is lower, and the installation step is simpler and more convenient.

Preferably, a second sealing layer is arranged on the outer side wall of the water inlet pipe, and the end part of the fixing rod is positioned in the second sealing layer.

Through adopting above-mentioned technical scheme, the second sealing layer seals the junction of dead lever and inlet tube, uses the second sealing layer to seal to make the sealed effect of check valve better.

Preferably, the two ends of the valve body are respectively provided with a connecting piece, one end, far away from the valve body, of the connecting piece is respectively connected with the water inlet pipe and the water outlet pipe, the connecting pieces are plastic connecting pieces, and the two ends of the connecting pieces are fixedly connected with the water inlet pipe, the water outlet pipe and the valve body through hot melting.

Through adopting above-mentioned technical scheme, when installing the valve body, establish two connecting pieces cover at the both ends of valve body and carry out hot melt fixed connection earlier, establish two connecting pieces respectively on inlet tube and outlet pipe and just those hot melt fixed connection again. So set up, use plastic connector to replace metal flange to carry out fixed connection to the valve body to further reduced the manufacturing cost of check valve.

Preferably, the blocking piece is an elastic blocking ball.

Through adopting above-mentioned technical scheme, use elasticity shutoff ball to block up the inlet tube, spherical shutoff spare is better to the shutoff effect of tubular inlet tube, and the shutoff spare has elasticity, can further improve the shutoff effect of shutoff spare.

Preferably, a limiting rod for blocking the plugging piece is arranged on one side, away from the water inlet pipe, of the plugging piece in the valve body.

Through adopting above-mentioned technical scheme, when the medium flow increases in the valve body, the pressure of water inlet department increases, and the deformation degree of elastic component increases, makes the shutoff piece remove towards the outlet pipe, and the spacing pole is spacing to the removal of shutoff piece to make the shutoff piece be difficult for carrying out the shutoff to the outlet pipe because of medium flow is too big.

Preferably, the stop lever is provided with a plurality of, and a plurality of the stop lever is along equidistant setting of valve body circumference, and a plurality of the tip mutual butt of stop lever.

Through adopting above-mentioned technical scheme, a plurality of gag lever posts block spacing to the shutoff piece to make the spacing effect of gag lever post better.

Preferably, the valve body is made of plastic pipe, the limit rod is a screw, and the thread of the limit rod passes through the valve body.

Through adopting above-mentioned technical scheme, rotate the gag lever post can install the gag lever post in the valve body, so make the manufacturing cost of check valve lower, the installation step is more simple convenient.

Preferably, a plurality of first sealing layers are arranged on the outer side wall of the valve body, and the end part of the limiting rod is located in the first sealing layers.

Through adopting above-mentioned technical scheme, first sealing layer seals the junction of gag lever post and valve body, uses first sealing layer to seal to make the sealed effect of check valve better.

Preferably, the plastic tube is a PP-series plastic tube, and the plastic tube includes, but is not limited to, PPR, PPE, PPB, PPC, PPH, PE and the like.

By adopting the technical scheme, the valve body, the water inlet pipe and the water outlet pipe which are made of plastic materials reduce the production cost of the check valve.

In summary, the present application includes at least one of the following beneficial technical effects:

by adopting the elastic piece and the plugging piece, when the pressure at the water inlet is greater than the elastic force of the elastic piece, the medium pushes the plugging piece to move and releases the plugging of the plugging piece to the water inlet pipe, so that the valve is opened, when the pressure at the water inlet is less than the elastic force of the elastic piece, the elastic piece pulls the plugging piece to move towards the water inlet pipe and enables the plugging piece to plug the water inlet pipe, so that the valve is closed, and the opening and closing of the check valve are realized by using the elastic piece and the plugging piece, so that the opening and closing of the check valve are not easily influenced by rust;

by adopting the limiting rod, the limiting rod limits the movement of the plugging piece, so that the plugging piece is not easy to plug the water outlet pipe due to overlarge medium flow;

through adopting the elasticity shutoff ball, use the elasticity shutoff ball to carry out the shutoff to the inlet tube, spherical shutoff spare is better to the shutoff effect of tubular inlet tube, and the shutoff spare has elasticity, can further improve the shutoff effect of shutoff spare.

Drawings

FIG. 1 is a schematic view showing the overall structure of a check valve in embodiment 1 of the present application;

FIG. 2 is a partial structural sectional view showing the internal structure of the valve body in a protruding manner in the check valve according to embodiment 1 of the present application;

FIG. 3 is an enlarged schematic view of FIG. 2A of the present application;

fig. 4 is a partial structural sectional view showing the internal structure of the valve body in a protruding manner in the check valve according to embodiment 2 of the present application.

Reference numerals illustrate: 1. a valve body; 2. a water inlet pipe; 3. a water outlet pipe; 4. a blocking member; 5. a fixed rod; 6. an elastic member; 7. a limit rod; 8. a first sealing layer; 9. a second sealing layer; 10. a connecting piece; 11. a hook.

Detailed Description

The present application is described in further detail below in conjunction with figures 1-4.

Example 1:

the embodiment of the application discloses a check valve.

Referring to fig. 1, a check valve comprises a valve body 1, wherein the valve body 1 comprises two ends which are open and are tubular, two ends of the valve body 1 are fixedly provided with connecting pieces 10, two ends of the two connecting pieces 10, which are far away from the valve body 1, are respectively fixedly provided with a water inlet pipe 2 and a water outlet pipe 3, in the application, the valve body 1, the water inlet pipe 2 and the water outlet pipe 3 are respectively made of PPR pipe, the diameter of the valve body 1 is larger than that of the water inlet pipe 2, and the connecting pieces 10 are reducing pipes made of PPR materials. The connecting piece 10 both ends adopt hot melt to connect, when the check valve is installed, heat the lateral wall of valve body 1 tip and the inside wall of the great bore one end of connecting piece 10 earlier, establish connecting piece 10 cover on valve body 1, can accomplish fixedly after waiting connecting piece 10 and valve body 1 cooling, heat the lateral wall of inlet tube 2 or outlet pipe 3 tip and the inside wall of the less bore one end of connecting piece 10, establish connecting piece 10 cover on inlet tube 2 or outlet pipe 3, can accomplish fixedly after connecting piece 10 and inlet tube 2 or outlet pipe 3 cooling. The check valve is integrally made of PPR material, so that the production cost is lower, and the installation efficiency is higher by adopting hot melt connection.

Referring to fig. 2 and 3, a blocking piece 4 is movably installed in the valve body 1, an elastic piece 6 is fixedly installed on the blocking piece 4, the elastic piece 6 penetrates through a connecting piece 10 and is located in the water inlet pipe 2, a hook 11 is fixedly installed at the end part of the elastic piece 6 located in the water inlet pipe 2, a fixing rod 5 is installed in the water inlet pipe 2, and the fixing rod 5 penetrates through the hook 11. In the application, the plugging piece 4 can be an elastic plugging ball made of rubber, the elastic piece 6 can be a spring, and the fixing rod 5 can be a screw. The elastic piece 6 is in the elastic stretching state all the time, and the elastic piece 6 pulls the plugging piece 4 to plug the water inlet pipe 2, the plugging effect of the spherical plugging piece 4 on the pipe water inlet pipe 2 is better, and the plugging piece 4 has elasticity, so that the plugging effect of the plugging piece 4 can be further improved. When the pressure of the liquid medium in the water inlet pipe 2 overcomes the elastic force of the elastic piece 6, the medium pushes the blocking piece 4 to move so as to open the valve, and when the pressure of the liquid medium in the water inlet pipe 2 fails to overcome the elastic force of the elastic piece 6, the elastic piece 6 pulls the blocking piece 4 to move towards the water inlet pipe 2 and block the water inlet pipe 2 so as to close the valve. The opening and closing of the check valve are realized by adopting the elastic piece 6 and the plugging piece 4, so that the opening and closing of the check valve are not easily affected by rust.

When installing the shutoff piece 4, firstly, install the connecting piece 10 of the one side that is close to inlet tube 2 to valve body 1, place shutoff piece 4 in valve body 1, secondly, pulling the couple 11 of elastic component 6 tip and place couple 11 in inlet tube 2, rotate dead lever 5 on inlet tube 2 lateral wall this moment, dead lever 5 passes inlet tube 2's lateral wall and couple 11 and butt on inlet tube 2's inside wall, finally, carry out the hot melt to connecting piece 10 and inlet tube 2 and fix, carry out the hot melt to connecting piece 10 and outlet pipe 3 of valve body 1 other end and fix, can accomplish the installation of check valve, and whole installation is simple convenient.

Referring to fig. 2, a second sealing layer 9 is installed on the outer sidewall of the water inlet pipe 2, and the screw cap of the fixing rod 5 is positioned in the second sealing layer 9. In this application, the second sealing layers 9 may be hot melt adhesives. After the fixing rod 5 is installed, the hot melt adhesive is dispensed on the water inlet pipe 2 to form a second sealing layer 9, and the second sealing layer 9 seals the joint of the fixing rod 5 and the water inlet pipe 2, so that the sealing effect of the check valve is better.

The practical principle of embodiment 1 of the present application is: the elastic piece 6 pulls the blocking piece 4 to block the water inlet pipe 2, liquid medium enters the valve body 1 from the water inlet pipe 2, when the pressure of the liquid medium in the water inlet pipe 2 overcomes the elastic force of the elastic piece 6, the medium pushes the blocking piece 4 to move so as to open a valve, and when the pressure of the liquid medium in the water inlet pipe 2 fails to overcome the elastic force of the elastic piece 6, the elastic piece 6 pulls the blocking piece 4 to move towards the water inlet pipe 2 and block the water inlet pipe 2 so as to close the valve. The opening and closing of the check valve are realized by adopting the elastic piece 6 and the plugging piece 4, so that the opening and closing of the check valve are not easily affected by rust.

Example 2:

referring to fig. 4, the difference between the embodiment of the present application and embodiment 1 is that four stop bars 7 are installed on the side of the valve body 1, which is far away from the water inlet pipe 2, of the plugging piece 4, the four stop bars 7 are installed at equal intervals along the circumferential direction of the valve body 1, and the end portions of the four stop bars 7 are abutted against each other, in the present application, the stop bars 7 are optionally screws. The utility model discloses a sealing device, including valve body 1, sealing piece 4, sealing piece 7, sealing piece 4, sealing piece 3, sealing piece 4, sealing piece 7, sealing piece 4, sealing piece 1 and sealing piece 3.

Four first sealing layers 8 are installed on the outer side wall of the valve body 1 at equal intervals along the circumferential direction of the valve body, nuts of the four limiting rods 7 are respectively located in the four first sealing layers 8, and in the application, the first sealing layers 8 can be hot melt adhesives. After the limiting rod 7 is installed, the first sealing layer 8 can be formed by dispensing hot melt adhesive on the valve body 1, and the first sealing layer 8 seals the joint of the limiting rod 7 and the valve body 1, so that the sealing effect of the check valve is better.

The practical principle of embodiment 2 of the present application is: the utility model discloses a sealing device, including valve body 1, sealing piece 4, sealing piece 7, sealing piece 4, sealing piece 3, sealing piece 4, sealing piece 7, sealing piece 4, sealing piece 1 and sealing piece 3.

The foregoing are all preferred embodiments of the present application, and are not intended to limit the scope of the present application in any way, therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.

Claims

1. The utility model provides a check valve, includes valve body (1), and the both ends of valve body (1) communicate respectively has inlet tube (2) and outlet pipe (3), its characterized in that: the novel valve is characterized in that a plugging piece (4) is arranged in the valve body (1), a fixing rod (5) is fixedly arranged in the water inlet pipe (2), an elastic piece (6) is arranged on the fixing rod (5), one end, far away from the fixing rod (5), of the elastic piece (6) is fixedly connected with the plugging piece (4) and drives the plugging piece (4) to be abutted to the water inlet pipe (2), and the plugging piece (4) is a rubber elastic plugging ball.

2. A check valve according to claim 1, wherein: the water inlet pipe (2) and the water outlet pipe (3) are plastic pipes, the fixing rod (5) is a screw, and the fixing rod (5) passes through the water inlet pipe (2) in a threaded manner and is abutted to the inner wall of the water inlet pipe (2).

3. A check valve according to claim 2, wherein: the outer side wall of the water inlet pipe (2) is provided with a second sealing layer (9), and the end part of the fixing rod (5) is positioned in the second sealing layer (9).

4. A check valve according to claim 1, wherein: the two ends of the valve body (1) are respectively provided with a connecting piece (10), one end, far away from the valve body (1), of each connecting piece (10) is respectively connected with the water inlet pipe (2) and the water outlet pipe (3), each connecting piece (10) is a plastic piece, one connecting piece (10) is respectively connected and fixed with the water inlet pipe (2) and the valve body (1) in a hot melting way, and the other connecting piece (10) is respectively connected and fixed with the water outlet pipe (3) and the valve body (1) in a hot melting way.

5. A check valve according to claim 2, wherein: and a limiting rod (7) for blocking the plugging piece (4) is arranged on one side, away from the water inlet pipe (2), of the plugging piece (4) in the valve body (1).

6. A check valve according to claim 5, wherein: the limiting rods (7) are arranged in a plurality, the limiting rods (7) are arranged at equal intervals along the circumferential direction of the valve body (1), and the end parts of the limiting rods (7) are mutually abutted.

7. A check valve according to claim 6, wherein: the valve body (1) is a plastic pipe, the limiting rod (7) is a screw, and the limiting rod (7) passes through the valve body (1) in a threaded manner.

8. A check valve according to claim 7, wherein: a plurality of first sealing layers (8) are arranged on the outer side wall of the valve body (1), and the end part of the limiting rod (7) is located in the first sealing layers (8).

9. A check valve according to claim 7, wherein: the valve body (1) is one of PPR, PPE, PPB, PPC, PPH, PE plastic pipes.