JP3127795U - Check valve - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a check valve that is resistant to deformation and breakage.
SOLUTION: A main body and a disk valve are provided, and the main body is a cylindrical body having a water outlet and a water inlet at both ends, and a central cylinder portion having a rib on the outside is provided at the center of the water outlet and the water inlet. A mounting hole is formed in the center of each central cylindrical portion, and the disk valve is a disc having an area corresponding to the size of the water inlet and accommodated inside the main body. A check valve is provided with a central shaft that extends through the mounting hole of the cylinder portion, and a spring is provided on the central shaft between the disc valve and the water outlet, and is combined with one surface of the disc valve on the water inlet side. It is characterized by being covered with rubber.
[Selection] Figure 1

Description

  The present invention relates to a check valve that is particularly resistant to deformation and breakage.

  As shown in FIGS. 7 and 8, the conventional check valve has a main body (40) and a disc valve (50), and the main body (40) has a water outlet (42) and a water inlet ( 41), a housing portion (43) is formed therein, and a central tubular portion (in the center of the water outlet (42) and the water inlet (41), having a rib (not indicated)) on the outside ( 44), and a mounting hole (440) is formed in the center of the central tube portion (44).

  The disc valve (50) is accommodated in the accommodating portion (43), has an area corresponding to the size of the water inlet (41), and both ends are attached to the mounting holes (440) of the central tube portion (44) at the center. ) And a spring (52) is provided on the central axis (51) between the disc valve (50) and the water outlet (42).

  When the conventional check valve is used, when water flows in, the spring (52) receives resistance due to water pressure, and the disk valve (50) is pushed to move to the water outlet (42). The water inlet (41) is opened, and water flows from the water inlet (41) to the water outlet (42). Further, when the water pressure is weakened, the disk valve (50) is pushed and moved to the water inlet (41) side by the urging force of the spring (52), and the water inlet (41) is sealed, so that the reverse flow of water is prevented. To prevent.

  However, since the disc valve (50) in the conventional check valve is made of metal, it is easy to generate noise when sealing the water inlet (41), and it moves repeatedly for a long time. Since there was a risk of damage, it was necessary to make further improvements.

  Accordingly, the present invention has been devised and aims to provide a check valve that is resistant to deformation and breakage.

  Invention of Claim 1 of this application has a main body and a disk valve, and this main body is a cylinder which has a water outlet and a water inlet in both ends, respectively, and has a rib in the center of this water outlet and a water inlet. A central cylindrical portion is provided, a mounting hole is formed in the center of each central cylindrical portion, and the disk valve is a disc having an area corresponding to the size of the water inlet, and accommodated inside the main body. A check valve is provided with a central shaft with both ends penetrating through the mounting holes of the respective central cylindrical portions, and a spring is provided on the central shaft between the disc valve and the water outlet, and the disc on the inlet side Provided is a check valve characterized in that a synthetic rubber is coated on one surface of the valve.

  The invention according to claim 2 of the present application provides the check valve according to claim 1, wherein the entire surface of the disk valve is coated with synthetic rubber.

  In the invention of claim 3 of the present application, a protruding ring corresponding to the shape of the water inlet is provided on one surface of the synthetic rubber in the disk valve on the water inlet side, and a washer is provided on the other surface. A fixing ring for fixing the synthetic rubber to the center of one surface of the synthetic rubber in the disk valve on the water inlet side is further provided by tightly attaching the washer to the disk valve by screwing a nut on the central shaft. The check valve according to claim 1, wherein the check valve is provided.

  According to the invention of claim 4 of the present application, the synthetic rubber is coated on a disk valve by a press casting method, and the synthetic rubber is ethylene / propylene rubber (EPM, EPDM), butyl rubber (IIR) or acrylonitrile / butanediene rubber ( The check valve according to claim 3 is provided.

  The present invention solves the above problems, and by providing a synthetic rubber used as a buffer material on the outside of the disc valve, when the disc valve seals the water inlet, it is difficult to generate noise, and Even when used for a long time, deformation and breakage of the disc valve hardly occur.

  Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In addition, the following Example is only what showed the preferred embodiment of this invention, and the technical scope of this invention is not limited to the following Example itself at all.

  1 is an exploded perspective view showing a first embodiment of a check valve according to the present invention, and FIG. 2 is a cross-sectional view showing an open state of the first embodiment of the check valve according to the present invention. FIG. 4 is a sectional view showing a sealed state of the first embodiment of the check valve according to the present invention, FIG. 4 is a sectional view showing a second embodiment of the check valve according to the present invention, and FIG. FIG. 6 is an exploded perspective view showing a third embodiment of the check valve according to the present invention, and FIG. 6 is a sectional view showing the third embodiment of the check valve according to the present invention.

  As shown in FIGS. 1 to 3, the check valve according to the present invention has a main body (10) and a disc valve (20), and the main body (10) has water outlets (11) at both ends, respectively. A cylindrical body having a water port (12), and a central tube portion (15) (16) having ribs (13) (14) on the outside is provided at the center of the water outlet (11) and the water inlet (12). A mounting hole (150) (160) is formed at the center of each central tube portion (15) (16).

  The disc valve (20) is a disk having an area corresponding to the size of the water inlet (12) while being accommodated in the main body (10). For example, ethylene propylene rubber ( EPM, EPDM), butyl rubber (IIR), or synthetic rubber (21) such as acrylonitrile butanediene rubber (NBR) is coated, and both ends of the disc valve (20) are in the middle of each central cylinder (15) (16). The central shafts (22) and (23) penetrating the mounting holes (150) and (160) are provided, and the spring is placed on the central shaft (22) between the disc valve (20) and the water outlet (11). (24) is provided.

  A protruding ring (210) corresponding to the shape of the water inlet (12) is provided on one surface of the synthetic rubber (21) on the water inlet (12) side, and a washer (26) is provided on the other surface. The nut (27) is screwed onto the central shaft (22) outside the 26), thereby bringing the washer (26) into close contact with the disc valve (20). Further, a fixing ring (25) for fixing the synthetic rubber (21) is provided at the center of one surface of the synthetic rubber (21) on the water inlet (12) side, so that water can be combined with the synthetic rubber (21). The problem of leaking from the gap with the central axis (23) can be prevented.

  As shown in FIG. 4, the second embodiment of the check valve according to the present invention is almost the same as the first embodiment, except that it is synthesized only on one surface of the disk valve (20) on the water inlet (12) side. The rubber (21 ′) is covered, and a protruding ring (210 ′) corresponding to the shape of the water inlet (12) is provided on one surface of the synthetic rubber (21 ′) on the water inlet (12) side.

  Since the method of using the check valve according to the present invention is the same as the conventional one, the detailed working method is omitted. Further, in the present invention, when the synthetic rubber (21) (21 ') used as a buffer material is provided outside the disk valve (20), the disk valve (20) seals the water inlet (12). The disc valve (20) is less likely to be deformed or damaged even when used for a long time.

  As shown in FIGS. 5 and 6, the third embodiment of the check valve according to the present invention further includes a filter (30), and a plurality of check valves are provided outside one end of the body (10) having a water inlet (12). A coupling hole (100) is formed on the outside of one end of the filter (30), and a coupling hole (31) corresponding to the coupling hole (100) of the main body (10) is formed. A coupling member (32) such as a screw is provided at 31), whereby the filter (30) is provided at the end of the water inlet (12) of the main body. Thereby, it can prevent that a big dirt and miscellaneous things enter the inside of a main part (10).

  Since the present invention has the above-described configuration, a synthetic rubber used as a cushioning material is provided on the outside of the disc valve, so that when the disc valve seals the water inlet, it is difficult for noise to be generated and used for a long time. Even so, the disk valve is unlikely to deform or break.

1 is an exploded perspective view showing a first embodiment of a check valve according to the present invention. It is sectional drawing which shows the open state of 1st Example of the non-return valve which concerns on this invention. It is sectional drawing which shows the sealing state of 1st Example of the non-return valve which concerns on this invention. It is sectional drawing which shows 2nd Example of the non-return valve which concerns on this invention. It is a disassembled perspective view which shows 3rd Example of the non-return valve which concerns on this invention. It is sectional drawing which shows 3rd Example of the non-return valve which concerns on this invention. It is sectional drawing which shows the sealing state of the conventional check valve. It is sectional drawing which shows the open state of the conventional check valve.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Main body 100 Coupling hole 11 Outlet 12 Inlet 13 Rib 14 Rib 15 Central cylinder part 150 Mounting hole 16 Central cylinder part 160 Mounting hole 20 Disc valve 21, 21 'Synthetic rubber 210, 210' Protruding ring 22 Central axis 23 Central axis 24 Spring 25 Fixing ring 26 Washer 27 Nut 30 Filter 31 Coupling hole 32 Coupling member 40 Main body 41 Water inlet 42 Water outlet 43 Housing part 44 Center tube part 440 Mounting hole 50 Disc valve 51 Center shaft 52 Spring

Claims (4)

A main body and a disc valve, the main body is a cylindrical body having a water outlet and a water inlet at both ends, respectively, and a central cylindrical portion having a rib on the outside is provided at the center of the water outlet and the water inlet; A mounting hole is formed in the center of the tube,
The disc valve is a disc having an area corresponding to the size of the water inlet, and accommodated inside the main body. A check valve in which a spring is provided on the central axis between the disc valve and the water outlet;
A check valve characterized in that synthetic rubber is coated on one surface of the disk valve on the water inlet side. 2. The check valve according to claim 1, wherein the entire surface of the disk valve is coated with synthetic rubber. A protruding ring corresponding to the shape of the water inlet is provided on one surface of the synthetic rubber in the disk valve on the water inlet side, and a washer is provided on the other surface, and a nut is screwed on a central axis outside the washer. The washer is brought into intimate contact with the disc valve, and a fixing ring for fixing the synthetic rubber is provided at the center of one surface of the synthetic rubber in the disc valve on the water inlet side. The check valve according to 1 or 2. The synthetic rubber is coated on a disk valve by a press casting method, and the synthetic rubber is ethylene-propylene rubber (EPM, EPDM), butyl rubber (IIR) or acrylonitrile-butanediene rubber (NBR). The check valve according to claim 3.

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