KR102228263B1 - Check Valve for Relieving water shock - Google Patents

Abstract

The present invention provides a check valve for relieving a water shock, which comprises: a valve body having a seat unit and receiving and discharging fluid by operation of a pump; a shaft installed to be arranged inside the valve body in one direction of the valve body; and a valve disk installed in the shaft to be moved in an arrangement direction of the shaft, moved to be spaced from the seat unit by pressure transmitted from the fluid by pumping power of the pump, and coming in contact with the seat unit to be moved by self-weight to be sealed during a suspension state of supply of the pumping power.

Description

Check Valve for Relieving water shock}

The present invention relates to a check valve, and more particularly, to a water shock relief check valve for mitigating a water shock by inducing a water shock acting horizontally to a vertical.

Check valves are valves that allow fluid to flow in only one direction and not in the opposite direction, and are widely used in water supply and drainage pipes or refrigerant pipes.

The check valve includes a swing type check valve and a lift type check valve, and the lift type certainly has a closing action, but is used only in horizontal pipes and not used in vertical pipes.

In the lift-type check valve, the valve moves up and down to open and close. When the inlet side pressure is higher than the outlet side, the valve is pushed up and opened to allow fluid to flow, and when the outlet side pressure is high, it is closed due to a pressure difference.

On the other hand, when the operation of the liquid or gas delivery pump is stopped within the check valve, a water hammer may act, resulting in damage to the pipe or an abnormal operation of the connected device.

Water hammer is an impact that occurs when water flowing in a pipe is suddenly stopped at a valve at the end of the pipe, and the kinetic energy of water is changed into pressure energy due to a sudden drop in fluid velocity, and this pressure passes through the pipe and again the position of the valve. Go back to

There is a need for a check valve that induces a water shock acting horizontally to relieve water shocks vertically.

It is an object of the present invention to provide a water shock mitigation check valve for mitigating water shocks by vertically inducing water shocks acting horizontally.

In order to solve the above problems, the water impact relief check valve of the present invention includes a valve body having a seat portion and configured to receive and discharge a fluid by operation of a pump; A shaft installed to be disposed in one direction inside the valve body; And installed on the shaft so as to be movable in the arrangement direction of the shaft, and moved to be spaced apart from the seat part by the pressure transmitted from the fluid by the pumping force of the pump, and in a state in which the supply of the pumping force is stopped, And a valve disk that is moved by and contacted with the seat portion so as to be sealable.

According to an example related to the present invention, the valve disk includes: a disk plate that is in contact with the seat portion so as to be sealed in a state in which a pumping force is not provided and spaced apart from the seat portion in a state in which a pumping force is provided; And a shaft accommodating portion formed toward an upper portion of the disk plate and having a space capable of accommodating the shaft.

The shaft accommodating portion is formed in a convex shape toward an upper portion of the disk plate, and the shaft accommodating portion may have a space capable of accommodating the shaft so as not to interfere with the shaft therein.

Preferably, the seat portion has a passage through which fluid can pass, and the valve body includes a first space, which is a space in which the fluid is accommodated before passing through the passage, and after the fluid passes through the passage. It has a second space that is a space to be used.

According to another example related to the present invention, a buffer may be installed between the bottom surface and the ground of the valve body to alleviate the impact transmitted to the valve body.

According to another example related to the present invention, the seat portion is formed in a shape bent twice along the lower portion of the other side from an upper portion of the seat portion, and the upper portion of the seat portion and the lower portion of the other side, respectively, of the valve body. It can be connected to the upper and lower inside.

Preferably, one end of the shaft is fixedly installed on the lower side of the inside of the valve body, and the vicinity of the center of the shaft may be inserted into the seat portion.

The water shock mitigation check valve of the present invention can reduce the water shock acting horizontally on the pipe by inducing vertically the water shock acting horizontally.

1 is a cross-sectional view showing a water impact relief check valve of the present invention.
Figure 2a is a side view of the water impact relief check valve of the present invention.
Figure 2b is a plan view of the water impact relief check valve of the present invention.
Figure 3 is a cut-away perspective view showing by cutting the valve body of the present invention.
4A is a cross-sectional view showing a state in which a valve disk is in contact with a seat portion in FIG. 1.
FIG. 4B is a cut-away perspective view showing a state in which the valve disk is in contact with the seat part in FIG. 1;
5A is a cross-sectional view showing a state in which the valve disk is spaced apart from the seat portion in FIG. 1.
FIG. 5B is a cut-away perspective view illustrating a state in which the valve disk is spaced apart from the seat portion in FIG. 1.

Hereinafter, exemplary embodiments disclosed in the present specification will be described in detail with reference to the accompanying drawings, but the same or similar reference numerals are assigned to the same or similar components, and redundant descriptions thereof will be omitted. The suffix "unit" for the constituent elements used in the following description is given or used interchangeably in consideration of only the ease of writing the specification, and does not itself have a distinct meaning or role from each other. In addition, in describing the embodiments disclosed in the present specification, when it is determined that a detailed description of related known technologies may obscure the subject matter of the embodiments disclosed in the present specification, the detailed description thereof will be omitted. In addition, the accompanying drawings are for easy understanding of the embodiments disclosed in the present specification, and the technical idea disclosed in the present specification is not limited by the accompanying drawings, and all changes included in the spirit and scope of the present invention It should be understood to include equivalents or substitutes.

Terms including ordinal numbers such as first and second may be used to describe various elements, but the elements are not limited by the terms. The above terms are used only for the purpose of distinguishing one component from another component.

When a component is referred to as being "connected" to another component, it should be understood that although it may be directly connected to the other component, another component may exist in the middle.

Singular expressions include plural expressions unless the context clearly indicates otherwise.

In this application, terms such as "comprises" or "have" are intended to designate the presence of features, numbers, steps, actions, components, parts, or combinations thereof described in the specification, but one or more other features. It is to be understood that the presence or addition of elements or numbers, steps, actions, components, parts, or combinations thereof does not preclude in advance.

1 is a cross-sectional view showing a water impact relief check valve 100 of the present invention, FIG. 2A is a side view of a water impact relief check valve 100 of the present invention, and FIG. 2B is a water impact relief check valve of the present invention ( 100). In addition, Figure 3 is a cut-away perspective view showing by cutting the valve body 10 of the present invention.

1 to 3, the structure of the water impact relief check valve 100 of the present invention will be described.

The water impact relief check valve 100 of the present invention includes a valve body 10, a shaft 20 and a valve disk 30.

The valve body 10 includes a seat 13 and receives and discharges a fluid. As an example, the valve body 10 is formed such that a fluid is provided by power generated by a pump, and the fluid provided to the valve body 10 flows through the inside of the valve body 10 and is discharged.

In the present invention, the fluid provided to the valve body 10 may be water, for example.

The seat 13 is provided inside the valve body 10. In addition, the seat portion 13 has a passage 13a through which a fluid can pass.

As an example, referring to FIGS. 1 and 3, the seat portion 13 is formed in a shape bent twice along the upper left to the lower right, and the upper left and the lower right of the seat 13 are valves, respectively. It is connected to the upper and lower portions of the inner side of the body 10, but is not necessarily limited to this structure.

In addition, in FIGS. 2B and 3, an example in which four passages 13a provided in the sheet portion 13 are formed in a fan shape are shown.

In addition, the valve body 10 is provided with an inlet 15a through which a fluid is introduced and an outlet 15b through which the introduced fluid is discharged.

1 and 3, a structure of a valve body 10 capable of flowing a fluid through an inlet 15a and discharging the fluid through an outlet 15b through a passage 13a of the seat portion 13 is shown. Is shown.

In addition, a side surface of the valve body 10 is shown in FIG. 2A, and a circular outlet 15b is shown.

Meanwhile, the valve body 10 includes a first space 17a and a second space 17b, and the first space 17a is a first and second space 17a, 17b) shows an example provided so as to be separated by the seat portion 13.

The first space 17a is a space on the side of the inlet 15a before the fluid passes through the passage 13a of the seat 13, and the second space 17b is a passage 13a of the seat 13 After passing through ), it may be understood as a space on the side of the outlet 15b.

As shown in Figs. 1 and 3, the valve body 10 is a two-story, horizontally flowing out of the second space 17b through the passage 13a of the seat part 13 by flowing in from the bottom. It can be understood as a structure.

The shaft 20 is installed to extend in one direction inside the valve body 10.

In Figure 1, one end of the shaft 20 is fixedly installed on the lower side of the inside of the valve body 10, and is installed so that the vicinity of the center between the upper and lower ends of the shaft 20 is inserted into the seat part 13, , In addition, an example in which the shaft 20 is installed perpendicular to the ground is shown.

A valve disk 30 to be described later is installed on the outer circumference of the shaft 20, and the outer circumference of the shaft 20 is preferably formed in a smooth structure so that the valve disk 30 can be operated vertically.

The valve disk 30 is installed on the shaft 20 so as to be movable in the arrangement direction of the shaft 20. For example, referring to FIG. 1, the valve disk 30 may be installed on the shaft 20 so as to be movable in a vertical direction with respect to the ground.

The valve disk 30 can move upwardly along the shaft 20 by the pumping force of the fluid generated by the power of the pump, and is moved by a movement limiting member 23 installed at the other end of the shaft 20. Will be limited. In a state where the supply of pumping force continues, the valve disk 30 may maintain its maximum movement upward so that its movement is restricted by the movement limiting member 23, and at this time, the fluid continues to pass through the passage and the valve body 10 ) Is discharged through the outlet (15b).

In addition, the valve disk 30 moves downward along the shaft 20 by its own weight in a state in which the supply of the pumping force is stopped, so that the lower end comes into contact with the seat portion 13 again. When the valve disk 30 is in contact with the seat portion 13, the passage 13a of the seat portion 13 is closed to limit the flow of the fluid.

The valve disk 30 may include a disk plate 31 and a shaft receiving portion 33.

The disk plate 31 may be disposed to be in contact with the seat portion 13 in a state in which no pumping force is provided. When the disk plate 31 comes into contact with the seat portion 13, the passage 13a of the seat portion 13 is closed by the disk plate 31, so that from the first space 17a to the second space 17b. The movement of the fluid is restricted, and the backflow of the fluid from the second space 17b to the first space 17a is prevented. To this end, a sealing member (not shown) is installed in the passage 13a of the seat portion 13 or the lower portion of the disk plate 31, so that it is possible to completely seal between the passage 13a and the disk plate 31. desirable. The sealing member may be, for example, an O-ring.

The disk plate 31 may be formed in the shape of a disk, for example. In addition, an insertion hole 31a may be formed in the disk plate 31 so that the shaft 20 can be inserted in the center. The outer diameter of the shaft 20 and the insertion hole 31a of the disk plate 31 maintain appropriate tolerances so that the disk plate 31 is in contact with the outer circumference of the shaft 20 and is movable by fluid pumping pressure. shall.

1 and 2B, an example in which the disk plate 31 has a circular plate shape is shown.

In addition, the disk plate 31 has a width of a predetermined length so that the central portion in which the insertion hole 31a is formed is thicker than the edge portion of the disk plate 31 so as to stably support the outer periphery of the shaft 20. I can.

Meanwhile, a bearing may be installed in the insertion hole 31a of the disk plate 31, and the disk plate may be installed on the outer periphery of the shaft through the bearing (see FIGS. 4B and 5B).

The shaft accommodating portion 33 is formed in a convex shape toward the top from the disk plate 31, and the shaft accommodating portion 33 is sufficient to accommodate the shaft 20 so as not to interfere with the shaft 20 therein. It is desirable to have a space.

The valve disk 30 may have a shape of a fedora by a flat disk plate 31 and a shaft receiving portion 33 that is convex upward from the disk plate 31.

In addition, the valve disk 30 is the seat portion 13 of the valve body 10 by its own weight before the pressure applied in the valve body 10 when the pump stops operating and the force that is reverse flow is leveled. It is desirable to have a predetermined weight to contact ).

The shock absorber 40 is installed between the support member 18 of the valve body 10 and the ground 3, and relieves an impact transmitted to the valve body 10.

It is preferable that the buffer unit 40 has an elastic force. For example, the buffer unit 40 may be a spring.

1 and 2A illustrate an example in which the support member 18 is installed on the bottom surface of the valve body 10 and the buffer part 40 is installed between the support member 18 and the ground 3. Referring to FIG. 2B, the support member 18 may be installed in the vicinity of four corners on the bottom surface of the valve body 10, and the buffer portion 40 is also located near the four corners on the bottom surface of the valve body 10. It may be installed between the support member 18 and the ground. Even if a water hammer is applied to the valve body 10 by the buffer unit 40, the shock transmitted to the valve body 10 is alleviated.

4A is a cross-sectional view showing a state in which the valve disk 30 is in contact with the seat portion 13 in FIG. 1, and FIG. 4B is a cutaway view of the state in which the valve disk 30 is in contact with the seat portion 13 in FIG. 1 It is a cut-away perspective view shown below. 5A is a cross-sectional view showing a state in which the valve disk 30 is spaced apart from the seat part 13 in FIG. 1, and FIG. 5B is a cutaway view of the state in which the valve disk 30 is spaced apart from the seat part 13 in FIG. 1 It is a cut-away perspective view shown below.

Hereinafter, with reference to FIGS. 4A to 5B, a description will be made of an operation in which the valve disk 30 comes into contact with or spaced apart from the seat 13 due to a pumping force acting on the fluid.

4A and 4B, the valve disk 30 is in contact with the seat 13.

In a state in which the fluid does not pass through the passage 13a of the seat 13 because a pumping force is not provided to the fluid, the valve disk 30 comes into contact with the seat 13, so that the water impact relief check valve of the present invention (100) is in a closed state. More specifically, the disk plate 31 of the valve disk 30 seals the passage 13a of the seat portion 13 to block the flow of fluid.

Thereafter, when the pumping force is provided to the fluid by the operation of the pump, the fluid starts to flow, and the valve disk 30 moves upward by the pressure of the fluid flowing by the pumping force.

In FIG. 5A, the valve disk 30 is spaced apart from the seat part 13 to a maximum by the pressure of the fluid due to the pumping force, and the upper end of the disk plate 31 is no longer in the upward direction by the movement limiting member 23. An example in which the movement is restricted is shown. In this state, the fluid flows from the first space 17a to the second space 17b through the passage 13a by the pumping force and is discharged through the outlet 15b. Arrows indicating the flow direction of the fluid are shown in Figs. 5A and 5B.

When the operation of the pump is stopped and the pumping force is no longer supplied into the valve body 10, the valve disk 30 moves downward along the shaft 20 by its own weight, and is re-positioned to the seat portion 13. Come into contact.

Since the valve disk 30 slowly moves downward by its own weight along the shaft 20, water shock is alleviated.

The number of shock-relieving check valves 100 described above are not limited to the configuration and method of the embodiments described above, but the embodiments may be configured by selectively combining all or part of each of the embodiments so that various modifications can be made. May be.

It is apparent to those skilled in the art that the present invention can be embodied in other specific forms without departing from the spirit and essential features of the present invention. Therefore, the detailed description above should not be construed as restrictive in all respects and should be considered as illustrative. The scope of the present invention should be determined by reasonable interpretation of the appended claims, and all changes within the equivalent scope of the present invention are included in the scope of the present invention.

100: check valve
3: ground
10: valve body 13: seat portion 13a: passage
15a: inlet 15b: outlet 17a: first space 17b: second space
18: support member
20: shaft 23: locking member
30: valve disk 31: disk plate
31a: insertion hole 33: shaft receiving part
40: buffer part

Claims (7)

A valve body having a seat portion and configured to receive and discharge a fluid by an operation of a pump;
A shaft installed to be disposed in one direction inside the valve body; And
It is installed on the shaft so as to be movable in the arrangement direction of the shaft, is moved to be spaced apart from the seat part by the pressure transmitted from the fluid by the pumping force of the pump, and by its own weight in the state where the supply of the pumping force is stopped. A valve disk that is moved and brought into contact with the seat portion to be sealed,
The valve disk,
A disk plate that is in contact with the seat portion so as to be sealed in a state in which a pumping force is not provided and spaced apart from the seat portion in a state in which a pumping force is provided; And
It is formed toward the upper portion of the disk plate and includes a shaft receiving portion having a space capable of accommodating the shaft,
The shaft accommodating portion is formed in a convex shape toward an upper portion of the disk plate, wherein the shaft accommodating portion has a space for accommodating the shaft so as not to interfere with the shaft therein.
delete delete The method of claim 1,
The seat portion has a passage through which a fluid can pass,
The valve body, a water impact relief check valve, characterized in that it has a first space that is a space that is accommodated before the fluid passes through the passage and a second space that is a space that is received after the fluid passes through the passage .
The method of claim 1,
Water impact relief check valve, characterized in that a buffer is installed between the bottom surface and the ground of the valve body to alleviate the impact transmitted to the valve body.
The method of claim 1,
The seat portion is formed in a shape bent twice from one upper portion to the lower portion of the other side, and the upper portion of the seat portion and the lower portion of the other side are connected to upper and lower portions of the inner side of the valve body, respectively. To be able to reduce the shock of the check valve.
The method of claim 1,
One end of the shaft is fixedly installed at a lower side of the inside of the valve body, and a water shock relief check valve, characterized in that it is installed so that the center of the shaft is inserted into the seat part.

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