JP3202358U - Adjust type wafer check valve - Google Patents

Abstract

An adjustment type wafer check valve capable of effectively preventing fluid leakage is provided. An adjustment type wafer check valve for reducing fluid leakage, comprising a valve housing, a tightening portion 12 formed on an inner wall surface of the valve housing, and a close portion installed in the tightening portion 12 13 includes a valve body 1 including a flap valve 2 having a pivot 22 and an elastic biasing member 3, and an end of the pivot 22 is connected to the close contact portion 13. Is installed, the close contact portion 13 is always in close contact with the tightening portion 12 of the valve body 1 by a radially outward biasing force. [Selection] Figure 3

Description

  The present invention relates to a check valve, and more particularly to an adjustment type wafer check valve for reducing medium leakage.

  The check valve is a valve that allows fluid to flow only in one direction and prevent flow in the other direction. The valve of the check valve is opened by the pressure of the fluid, and the fluid flows out from the inlet side to the outlet side. When the pressure on the inlet side is lower than that on the outlet side, the valve is closed due to a difference in flow pressure, its own weight, and the like, thereby preventing a fluid backflow accident.

  In the conventional check valve structure, the normal valve is a valve that opens and closes when connected to a pivot. Since the pivot penetrates the valve body of the check valve and the exposed portion is fixed with a nut, assembly and removal can be easily performed. However, in such a structure, since the joint between the pivot and the valve body is not tightly joined, there is a gap, so that the fluid remaining in the valve housing of the check valve leaks from the joint and the above causes. , Have environmental pollution, occupational safety and other problems.

  In another well-known check valve structure, the pivot is previously installed on the fixed seat, and the fixed seat is fixed to the valve body with a screw, which allows fluid leakage from the joint between the pivot and the valve body. To prevent. However, in such an arrangement method, in order to prevent corrosion of acidic substances or organic gases, screws are installed outside the valve body, thereby affecting the flatness of the structure surface, and the valve body and the piping or in the piping. Since it cannot seal completely between other members, fluid will leak from a joined part.

  The present invention has been made in view of the above-described problems, and an object of the present invention is to provide an adjustment type wafer check valve capable of effectively preventing fluid leakage.

  In order to achieve the above object, an adjustment type wafer check valve provided by the present invention is an adjustment type wafer check valve for reducing fluid leakage, and is formed on a valve housing and an inner wall surface of the valve housing. A valve body including a tightening portion and a close contact portion installed in the tightening portion; a flap valve disposed in the valve housing and having a pivot; and an elastic urging member, wherein an end of the pivot is the close contact When the elastic urging member is installed, the tightly contacting portion is always in close contact with the tightly fitting portion of the valve body by the radially outward urging force. ).

  Preferably, the elastic biasing member is a snap ring, the valve body further includes a fitting tank, and the fitting tank is provided around the inner surface of the close-contact portion and the inner wall surface of the valve housing, and the fitting is performed. When the snap ring is installed in the combination tank, the close contact portion is brought into contact with and tightly pressed against the connection portion of the valve body.

  Preferably, the elastic biasing member is a disc-type spring washer, and further, the close contact portion includes at least one pivot hole, and the disc-type spring washer is installed in the one pivot hole, thereby The close contact portion is brought into contact with and tightly pressed against the tightening portion of the valve body.

  Preferably, the elastic biasing member includes a snap ring and a disc spring washer, the valve body further includes a fitting tank, and the fitting tank is formed on the inner surface of the close contact portion and the inner wall surface of the valve housing. And the close contact portion includes at least one pivot hole, the snap ring is installed in the fitting tank, and the disc spring washer is installed in the one pivot hole. The close contact portion is in contact with and tightly pressed against the tightening portion of the valve body.

  Preferably, the shape of the close contact portion is matched to that of the tightening portion.

  Preferably, the tightening portion is a recess formed in an inner wall surface of the valve housing, and the close contact portion is a sliding member whose shape matches the recess.

  Preferably, the adjustment type wafer check valve further includes a limit shaft, the close contact portion has two pivot holes, and the limit shaft is connected to one pivot hole of the two pivot holes, and the pivot Is connected to the other pivot hole of the two pivot holes.

  Preferably, the adjustment type wafer check valve includes a plurality of washers, and the plurality of washers are installed on the pivot so as to isolate the flap valve valve, the elastic unit and the close contact portion. is there.

  Preferably, the adjustment type wafer check valve includes a colloid, and the colloid is applied to a surface of the valve body.

  Preferably, the valve of the flap valve is a butterfly valve.

  As described above, according to the adjustment type wafer check valve of the present invention, the close contact portion can be contacted and pressed tightly by the elastic biasing member at all times, and the close contact portion can be contacted and pressed tightly. Since the structural installation of the elastic biasing member does not affect the flatness of the structural surface, the fluid remaining in the valve housing is difficult to leak from the joint portion or the joint portion or joint surface of the tight portion. As a result, environmental pollution due to liquid leakage can be prevented, and workability and occupational safety can be further improved.

  Embodiments adopted in the present invention will be specifically described with reference to the following embodiments and the accompanying drawings. Those skilled in the art can realize the present invention by thoroughly reading this embodiment.

It is a three-dimensional view showing an adjustment type wafer check valve according to an embodiment of the present invention. It is side sectional drawing which shows the adjustment type wafer check valve | bulb of the Example of this invention. It is an exploded view showing an adjustment type wafer check valve according to an embodiment of the present invention. It is an upper section showing an adjustment type wafer check valve of an example of the present invention.

  Hereinafter, an embodiment of the present invention will be described with reference to FIGS. The corresponding description is only an example of the embodiment of the present invention, and does not limit the embodiment of the present invention.

  As shown in FIGS. 1 to 4, the adjustment type wafer check valve 100 of the present invention includes a valve body 1, a flap valve 2, and an elastic biasing member 3. Among them, the valve body 1 includes a valve body 11, two engagement portions 12, and two close portions 13. The valve body 11 has a valve housing R, the two tightening portions 12 are formed in the valve body 11, and the two close portions 13 are respectively installed in the tightening portions 12. A joint surface S is defined by the valve body 11 on the upper surface of the valve body 11. Preferably, the colloid 14 is applied to the surface of the valve body 11 to prevent leakage of the fluid from the valve housing R when the fluid stops flowing out from the inlet side to the outlet side.

  The tightening portion 12 is formed on the inner wall surface of the valve housing R and used for installing the close-contact portion 13. In this embodiment, the tightening portion 12 is a concave portion having a curved surface. Further, the tightening portion 12 may be a convex portion formed on the inner wall surface of the valve housing R as required in use, and the surface thereof may be a flat surface, a sawtooth surface, or another surface. In addition, the installation quantity of the said fastening part 12 can be made into 1 piece or 1 or more according to the quantity of a close part.

  The close contact portion 13 is installed in the tightening portion 12. Preferably, the close contact portion 13 is a sliding member. The close contact portion 13 can have excellent close contact between the close contact portion 13 and the close contact portion 12 by matching the shape with the close close portion 12. Alternatively, the shape of the close contact portion 13 and the tightening portion 12 may not match each other. For example, although the close contact portion 13 and the surface in contact with the tightening portion 12 are in close contact, the close contact portion 13 may be smaller in size than the tightening portion 12.

  As shown in FIGS. 1 and 3, the flap valve 2 is installed in the valve housing R and includes a valve 21, a pivot 22, a limit shaft 23, a resilient unit 24, and a plurality of washers 25. In this embodiment, the valve 21 is a butterfly valve. As shown in FIG. 2, the pivot 22 penetrates the through hole of the valve 21, and the end of the pivot 22 is connected to the pivot hole of the close contact portion 13, thereby rotating the valve 21 up and down. be able to. As shown in FIG. 2, the limit shaft 23 is installed above the valve 21, and the end portion is connected to the pivot hole of the close contact portion 13, thereby limiting the rotation range of the valve 21. The resilient unit 24 is two torsion springs, and the resilient unit 24 is penetrated by the pivot 22, thereby providing the valve 21 with a rebounding downward force. The plurality of washers 25 are penetrated by the pivot 22, respectively, between the through holes of the valve 21, between the two torsion springs, between the through hole and the torsion spring, and between the through hole and the close contact portion 13. By being installed, it is possible to isolate the above components and thereby prevent wear of the components due to rotational movement.

  As shown in FIG. 1 and FIG. 3, by installing the elastic biasing member 3, the close contact portion 13 is always brought into contact with the tightening portion 12 with a radially outward biasing force. The elastic urging member 3 can always contact and tightly press the close contact portion 13 by a plurality of methods. For example, in one embodiment, the elastic urging member 3 includes a snap ring 31, the snap ring 31 is installed in the fitting tank G of the valve housing R, and the fitting tank G is connected to the close portion 13. And an inner wall surface of the valve housing R. The snap ring 31 is installed in the fitting tank G, and the close contact portion 13 is always in contact with and tightly pressed by a radially outward biasing force. Intimate pressure is applied. In another embodiment, the elastic biasing member 3 includes a disc spring washer 32. The disc-shaped spring washer 32 is installed in any one pivot hole of the close contact portion 13. By providing a radially outward biasing force from the disc-shaped spring washer 32, the close contact portion 13 is always brought into contact with and tightly pressed against the tightening portion 12. In another embodiment, the elastic biasing member 3 may include a snap ring 31 and a disc spring washer 32 at the same time, whereby the close contact portion 13 is further pressed against the tightening portion 12. The

  According to said structure, the joining location of the said fastening part 12 and the said close_contact | adherence part 13 is always contact | abutted by the snap ring 31 of the said elastic urging member 3, and it is contact | adhered and tightly contacted, and, thereby, the joint surface S of the valve body 11 The flatness is maintained, and the fluid remaining in the valve housing R is less likely to leak from the joint portion or the joint surface S of the joint portion 12 and the joint portion 13. As a result, environmental pollution due to liquid leakage can be prevented, and workability and occupational safety can be further improved.

  The preferred embodiments of the present invention have been disclosed as described above so that those skilled in the art can understand them, but these do not limit the present invention in any way. Various adjustments and modifications can be made without departing from the spirit and scope of the present invention. Accordingly, the scope of the utility model registration claim of the present invention should be construed broadly including such adjustments and modifications.

100 Adjustment type Wafer check Valve 1 Valve body 11 Valve body 12 Joint portion 13 Joint portion 14 Colloid 2 Flap valve 21 Valve 22 Pivot 23 Limit shaft 24 Elastic unit 25 Washer 3 Elastic biasing member 31 Snap ring 32 Dish spring washer R Valve housing S Joint surface G Mating tank

Claims (10)

An adjustable type wafer check valve for reducing fluid leakage,
A valve body including a valve housing, a tightening portion formed on an inner wall surface of the valve housing, and a close contact portion installed in the tightening portion;
A flap valve installed in the valve housing and having a pivot;
An elastic biasing member,
The end portion of the pivot is connected to the close contact portion, and the elastic biasing member is installed, so that the close contact portion is always in close contact with the tightening portion of the valve body by a radially outward biasing force. Adjustable type wafer check valve characterized by   The elastic biasing member is a snap ring, the valve body further includes a fitting tank, and the fitting tank is provided around the inner surface of the close-contact portion and the inner wall surface of the valve housing. 2. The adjust type wafer check valve according to claim 1, wherein the snap ring is installed so that the tight contact portion is brought into contact with and tightly contacted with the joint portion of the valve body.   The elastic biasing member is a disc spring washer, and further, the tight contact portion includes at least one pivot hole, and the tight spring portion is installed in the single pivot hole, whereby the tight contact portion is The adjust type wafer check valve according to claim 1, wherein the valve body is pressed against and tightly contacted with a tightening portion of the valve body.   The elastic biasing member includes a snap ring and a disc spring washer, the valve body further includes a fitting tank, and the fitting tank is provided around the inner surface of the close contact portion and the inner wall surface of the valve housing. Further, the close contact portion includes at least one pivot hole, the snap ring is installed in the fitting tub, and the disc spring washer is installed in the one pivot hole. The adjust type wafer check valve according to claim 1, wherein the portion is brought into contact with and tightly pressed against the tightening portion of the valve body.   2. The adjust type wafer check valve according to claim 1, wherein the shape of the close contact portion matches that of the close contact portion.   2. The adjustment type wafer according to claim 1, wherein the tightening portion is a recess formed in an inner wall surface of the valve housing, and the close contact portion is a sliding member whose shape matches the recess. Check valve.   The shaft further includes a limit shaft, and the close portion has two pivot holes, the limit shaft is connected to one of the two pivot holes, and the pivot is the other of the two pivot holes. 2. The adjustment type wafer check valve according to claim 1, wherein the adjustment type wafer check valve is connected to a pivot hole.   The adjustment type wafer check valve according to claim 1, further comprising a plurality of washers that are installed on the pivot so as to isolate the flap valve valve, the elastic unit, and the close contact portion.   The adjust type wafer check valve according to claim 1, further comprising a colloid applied to a surface of the valve body.   2. The adjustment type wafer check valve according to claim 1, wherein the flap valve is a butterfly valve.

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