TW201920866A - Check valve, manufacturing method of check valve, check valve assembly and manufacturing method of check valve assembly capable of achieving small variations of an opening of a valve part and facilitating the manufacturing process - Google Patents

Abstract

The present invention relates to a check valve, which is provided with: a valve portion capable of being opened relative to the inflow fluid to allow the fluid to flow out and capable of being closed relative to the reverse-flow fluid flowing in a direction opposite to an outflow direction so as to stop the fluid from flowing therein, under the condition of being mounted on a carrying base; and a mounting portion mounted on the carrying base. The valve portion is formed to have an open state that can be closed by a closing action. The mounting portion is formed to have a deformable shape that may allow the valve portion to perform a closing action by a deformation.

Description

   Check valve, manufacturing method of check valve, check valve assembly and manufacturing method of check valve assembly   

The invention relates to a check valve, a method for manufacturing the check valve, a check valve assembly and a method for manufacturing the check valve assembly.

In the past, there is known a check valve provided in the flow channel, which allows the forward flow from the upstream side of the flow channel to the downstream side, but does not allow the reverse flow from the downstream side of the flow channel to the upstream side. The general check valve is, for example, a cylindrical check valve having an upstream side that is open and a downstream side that is a water stop having an opening / closing portion (see Patent Document 1).

This traditional check valve is made by pressing and heating a mold provided with a rubber material such as an elastomer or silicone to integrally mold the body of the check valve in a form in which a water stop is also connected. After the molded article is taken out from the mold, the water stop is cut by a cutting mechanism (such as a cutter) to form the water stop.

[Prior technical literature]

[Patent Literature]

Patent Document 1: Japanese Patent Application Publication No. 2013-61045

However, like the conventional check valve described above, using a cutter or laser light to cut a closed portion made of a rubber material to form a slot-like opening of the check valve, the degree of opening may be caused by the difference in cut-in during the cut. If it is changed, it will not be easy to manufacture because the desired performance cannot be obtained or the processing becomes complicated.

Therefore, the object of the present invention is to provide a check valve with a small opening difference and easy manufacturing, a method for manufacturing a check valve that can easily obtain a check valve with a small opening difference, and a small opening difference when mounted on a socket. In addition, a check valve assembly capable of easily manufacturing a check valve, and a method of manufacturing a check valve assembly capable of easily obtaining a check valve assembly.

In order to achieve the above object, the check valve according to the present invention has a valve portion, which is installed in a seat and opens out with respect to the inflowing fluid to make it flow out, and has a reverse flow in a reverse direction with respect to the direction from and to the outflow. The fluid is closed to prevent its inflow; and a mounting portion is mounted on the socket; the valve portion is formed in an open state that is closed by a closing action; the mounting portion is formed to deform the valve by deformation The deformable shape of the part performing this closing action.

In order to achieve the above object, in the method for manufacturing a check valve according to the present invention, the check valve includes: a valve portion, which is installed in a seat, opens with respect to the inflow fluid to flow out, and relatively The countercurrent fluid in the reverse direction from and to the outflow direction is closed to prevent its inflow; and a mounting portion is mounted on the socket; the valve portion is formed into an open state which is closed by a closing action; the mounting portion can be The deformation is flat and formed into a mountain shape protruding in the outflow direction, and the valve portion can be closed by the deformation.

In order to achieve the above object, the check valve assembly system related to the present invention is a check valve assembly composed of a check valve such as item 1 of the patent application scope and a seat on which the check valve is installed; the check valve system With a valve portion, the valve portion is opened with respect to the inflow fluid to make it flow out, and is closed with respect to the counter-flow fluid in the reverse direction from and out to prevent its inflow; the seat has a bearing surface, and the bearing surface is Deformable to make the valve portion of the check valve installed into a closed state.

In order to achieve the above object, the method for manufacturing a check valve assembly related to the present invention is to obtain a check valve assembly of a check valve assembly composed of a check valve and a seat on which the check valve is installed. Manufacturing method; using a check valve related to the present invention; mounting the mounting portion of the check valve on the socket, and deforming the mounting portion to form an open state by a closing action. Valve section is closed

In order to achieve the above object, the manufacturing method of the check valve assembly related to the present invention is used to obtain the check valve assembly manufacturing method related to the check valve assembly of the present invention; The check valve in the open state, which is closed by the closing action, is mounted on the bearing surface of the socket so that the valve portion becomes a closed state.

According to the present invention, it is possible to provide a check valve with a small opening difference and easy manufacturing, a method for manufacturing a check valve with a small opening difference, and a method for manufacturing a check valve with a small opening difference. A check valve assembly capable of easily manufacturing a check valve, and a method of manufacturing a check valve assembly capable of easily obtaining a check valve assembly.

10, 20‧‧‧ Check valve

11, 21‧‧‧ Valve Department

12, 22‧‧‧Mounting Department

12a‧‧‧Trench

13, 23‧‧‧ valve body

13a, 23a‧‧‧Valve body part

14, 24‧‧‧ ribs

15‧‧‧Piping (Socket)

15a‧‧‧Receiving Department

16‧‧‧Mounting ring

17‧‧‧Check valve assembly

18‧‧‧ seat

18a‧‧‧flat face

18b‧‧‧ Attachment

110、118‧‧‧Check valve assembly

111、120‧‧‧Check valve

112, 119‧‧‧ seat

112a, 119a‧‧‧bearing surface

112b‧‧‧ bottom

112c‧‧‧Yamagata

113, 121‧‧‧ Valve Department

114, 123‧‧‧valve body

114a, 123a‧‧‧ valve body parts

115, 122‧‧‧Mounting Department

115a‧‧‧Trench

116, 124‧‧‧ ribs

117‧‧‧Mounting ring

117a‧‧‧groove

119b‧‧‧ Attachment

α‧‧‧Tilt angle

β‧‧‧ angle

FIG. 1 is a perspective view showing a check valve according to a first embodiment of the present invention.

FIG. 2 is an explanatory diagram showing an open state and a closed state of the check valve of FIG. 1. FIG.

FIG. 3 is a cross-sectional explanatory view showing a state in which the check valve of FIG. 1 is attached to a seat.

FIG. 4A is a cross-sectional explanatory view showing a state in which another example of the check valve of FIG. 1 is attached to a seat.

FIG. 4B is a perspective view showing the mounting ring of FIG. 4A.

5 is a cross-sectional explanatory view showing a check valve assembly according to a second embodiment of the present invention.

FIG. 6A is a perspective view showing another example of the check valve of FIG. 1.

FIG. 6B is an explanatory diagram showing an open state and a closed state of the check valve of FIG. 6A.

Fig. 7 is a perspective view showing a check valve assembly according to a third embodiment of the present invention.

FIG. 8 is a perspective view showing an opening state of the check valve of FIG. 7.

FIG. 9 is an explanatory diagram showing an open state and a closed state of the check valve of FIG. 7.

FIG. 10 is a perspective view showing the pedestal of FIG. 7.

FIG. 11 is an explanatory diagram showing a combination example of a check valve and a seat in a check valve assembly according to Embodiment 3 of the present invention in a table.

12 is a perspective view schematically showing another example of the check valve assembly of FIG. 7.

FIG. 13 is a perspective view showing the mounting ring of FIG. 12.

14 is a perspective view schematically showing a check valve assembly according to a fourth embodiment of the present invention.

FIG. 15 is a perspective view showing a state in which the check valve in the check valve assembly of FIG. 14 is installed before the seat.

FIG. 16 is an explanatory diagram showing an open state and a closed state of the check valve of FIG. 15.

Hereinafter, the modes for implementing the present invention will be described with reference to the drawings.

(Implementation Mode 1)

As shown in FIG. 1 and FIG. 2, the check valve 10 according to the first embodiment has a valve portion 11 which is opened to the inflow fluid to make it flow out when the valve portion 11 is mounted on the seat, and is relatively The backflow fluid with the outflow direction in the reverse direction is closed to prevent its inflow, and the mounting portion 12 is mounted on the seat; the valve portion 11 is formed in an open state which is closed by a closing action, and the mounting portion 12 is formed as a The deformable shape that causes the valve portion 11 to perform a closing operation by deformation.

The check valve 10 according to the implementation form 1 is provided in, for example, a pipe (seat) of a drainage trap provided in a drainage channel communicating with a drainage port, and is used as a backflow prevention valve, which opens to allow drainage from the drainage flow. The passage of the upstream flow from the upstream side to the downstream side is closed, and the passage of the reverse flow from the downstream side to the upstream side is not allowed.

In the first embodiment, the check valve 10 further includes a valve body portion 13 having an internal space protruding from the outflow direction of the inflow fluid. When mounted on the seat, the outer surface is hemispherical. (For example, a substantially bowl-shaped shape), the inflow opening of the valve body portion 13 is formed with a mounting portion 12 formed by a ring segment portion which is one step higher than the outer surface of the valve body portion 13 throughout the entire periphery of the opening.

When the valve portion 11 of the implementation mode 1 is mounted on the seat, the valve portion 11 extends along the protruding direction of the valve body portion 13, that is, extends along the hemispherical outer surface in a curved shape, and is formed to cut the valve body portion 13 It is separated into slits in three directions to form an opening, and each valve body of the valve body portion 13 in three directions is cut and separated from the front end portion of the valve body portion 13 serving as an outflow port of the inflow fluid to the mounting portion 12. The section piece 13a has a gap between the valve body section pieces 13a adjacent to each other at the front end portion (see FIGS. 1 and 2).

In Embodiment 1, each valve body piece 13a having a slightly triangular appearance is located at a position that divides the entire circumference of the mounting portion 12 by approximately three equal parts, and is integrally formed with the mounting portion 12 as if standing from the mounting portion 12 Each of the valve body portion pieces 13 a is provided with a rib portion 14 continuous to the mounting portion 12 at two end edges except for the mounting portion 12 side. Then, the adjacent valve body portion pieces 13a become such that the rib portions 14 face each other.

That is, the valve portion 11 of the implementation mode 1 is formed on the rib portion 14 protruding from the outer surface of the valve body portion 13. The rib portions 14 that are separated and adjacent to each other when they are opened will abut when they are closed. In this state, a valve portion 11 called a lip-shaped opening is formed.

The valve portion 11 of the implementation mode 1 separates the valve body portion pieces 13a of the valve body portion 13 that have been cut and separated in three directions in advance, and separates them like opened lips to form an open state with a gap. The deformation of the mounting portion 12 formed into a deformable shape causes a closing operation to be performed to close it. That is, each of the valve body portion pieces 13a separated from each other by being integrated with the mounting portion 12 due to the deformation operation of the mounting portion 12 is brought into contact with each other by bringing adjacent valve body portion pieces 13a close to each other with a closed gap. And close like a closed lip, the valve portion 11 in the open state will be closed to close the outflow port of the check valve 10.

In this way, since the check valve 10 of the implementation mode 1 forms the valve portion 11 in an open state that is cut and separated in advance, openings can be formed without being cut, so there are fewer differences in openings, and manufacturing becomes easily.

The mounting portion 12 of the embodiment 1 is formed into a flat shape that can be deformed using, for example, a rubber material. The embodiment 1 is elastically deformable and has a convex mountain shape (deformable shape) that is convex toward the outflow direction. The system is configured so that the valve portion 11 can be closed by deforming from a mountain shape to a flat shape. In this mounting portion 12, the groove 12 a is formed on the inner peripheral surface of the mounting portion 12 throughout the entire circumference thereof, and the outer peripheral surface direction is opened in the inner peripheral surface as a depth direction. That is, a mountain shape along a mountain shape of the mounting portion 12 (see a dotted line in FIG. 2).

In the first embodiment, the mounting portion 12 is formed by using the boundary portions of the valve body portion pieces 13a adjacent to each other at three positions on the circumference of the mounting portion 12 as top portions, and the valve body portion pieces 13a are arranged in the circumferential direction. The center is used as the bottom (see the dotted line in Figure 2), and a groove 12a is formed in a ring shape. The groove 12a is formed into three continuous mountain shapes formed by two equilateral sides, for example. And the mountain shapes along the three mountain shapes formed by the two equilateral sides will be continuous.

In the implementation mode 1, in the mounting portion 12, the inclination angle α of the mountain shape with the boundary portion of the adjacent valve body piece 13a as the top is preferably 1 ° to 15 ° with respect to the plane passing through the bottom of the mountain shape, and more It is preferably 3 ° to 5 °, and the angle β (= 2α) formed by the front end portion of each adjacent valve body piece 13a is preferably 2 ° to 30 °, and more preferably 6 ° to 10 °. This is because if the inclination angle α of the mountain shape is less than 1 °, it is difficult to mold the mounting portion 12, and if it is more than 15 °, it is difficult to close the valve portion 11 smoothly. Here, the mountain-shaped inclination angle α is an angle formed by a straight line connecting the apex of the mounting portion 12 and the bottom, and the upper surface (flat surface) of the seat on which the check valve 10 is mounted, which is in contact with the bottom of the mounting portion 12.

As shown in FIG. 2, in the first embodiment, the mounting portion 12 is flattened by pressing down, for example, three mountain shapes of the mounting portion 12 from above, spreading over the entire circumference of the mounting portion 12 ( (See the two-dot chain line in the figure). With this, for example, the three valve body pieces 13a are adjacent to each other, and the ribs 14 abut and adhere to each other (see the two-dot chain line in the figure). That is, the closing operation of the valve portion 11 in the open state (see the two-dot chain line in the figure) is performed by deforming the mounting portion 12 formed in a deformable shape.

In addition, the mountain shape of the mounting portion 12 is not limited to the mountain shape formed by two equilateral sides, but may be constituted by unequal sides, or the top of the mountain is formed by a slightly straight crossing angle (see FIG. 2). It can also be constituted by an upwardly convex arc, as long as it is a deformable shape that can be deformed from a mountain shape to a flat shape.

The check valve 10 according to the first embodiment is a drain trap provided in a target to which the check valve 10 is attached (that is, a drain flow channel communicating with a drain port, for example).

As shown in FIG. 3, when the check valve 10 of Embodiment 1 is attached to a drain trap (not shown in the figure), for example, the valve portion 11 is directed to the drainage outflow direction, and the mounting portion 12 is mounted in a reverse direction. The socket 15 to which the check valve 10 is mounted forms a piping 15 for a drainage outflow of a drainage trap.

The piping 15 has an outward-facing flange at the open end, which is a receiving portion 15a that abuts the mounting portion 12 of the check valve 10, and is formed by an annular flat surface slightly parallel to the opening surface (see FIG. 3) ), And the mounting portion 12 is mounted on a receiving portion 15a constituted by the flat surface of the pipe 15 serving as the socket. Since the receiving portion 15a is fitted into the groove 12a of the mounting portion 12, the mountain-shaped groove 12a (see FIG. 2) will abut against the receiving portion 15a, so that the mountain-shaped mounting portion 12 and the receiving portion 15a are aligned with each other. The mountain-shaped grooves 12a are flattened together. That is, in Embodiment 1, the check valve 10 is configured to force the mounting portion 12 by inserting a component having a flat surface shape (for example, the receiving portion 15a) into the groove 12a (see FIG. 3) of the mounting portion 12. The ground is deformed from a mountain shape (see the solid line in FIG. 2) to a flat shape (see the two-dot chain line in FIG. 2, and FIG. 3).

In addition, the receiving portion 15a to be a seat on which the check valve 10 is mounted is not limited to a case of a flat surface, and may be formed by a shape other than a flat surface, such as a curved surface shape. The mounting portion 12 of the check valve 10 connected to the receiving portion 15a is formed in a shape other than a flat surface corresponding to the receiving portion 15a, and the check valve 10 can be mounted.

As a result, the check valve 10 of the first embodiment is configured to deform the mounting portion 12 to bring the valve main body pieces 13 a arranged with a gap closer to each other, and to make the ribs 14 abut and close each other. The valve portion 11 is brought into a closed state (see the two-point chain line in FIG. 2), so even if the valve portion 11 is formed into an open state that is cut and separated in advance (see the solid line in FIG. 2), The check valve 10 is mounted on a socket (piping 15 in the first embodiment), and the valve portion 11 is closed to close the outflow port of the check valve 10.

In addition, as another example of the check valve 10, the check valve 10 in which the mounting portion 12 is not provided with the groove 12a may be used. In this case, the mounting portion 12 may be abutted and sealed as shown in FIG. 4A. The mounting portion 12 is deformed from a mountain shape to a flat shape while being pressed on the flat surface of the socket (in this other example, the receiving portion 15a of the piping 15). The mounting portion 12 is inserted between the mounting ring 16 and the socket to maintain the deformed state of the mounting portion 12 (see FIG. 4A). The mounting ring 16 can be fixed in a state where the mounting portion 12 is inserted between the mounting ring 16 and the socket by, for example, bolts, nuts, etc. (not shown).

In the check valve 10 of Embodiment 1, when the valve portion 11 is opened and closed in three directions as viewed from the top side, the closing force when the valve portion 11 is closed is dispersed in three directions. If it becomes weak, the valve portion 11 is less likely to vibrate and less likely to generate noise. Furthermore, in the check valve 10 of the implementation form 1, since the side on the side of the mounting portion 12 of the valve portion 11 is held to be opened by one side, the closing force when the valve portion 11 is closed is weakened and contributes to the valve. The portion 11 is less prone to vibration and less likely to generate noise. In the check valve 10 according to the first embodiment, since the valve portion 11 is formed on the rib portion 14, the check strength when the valve portion 11 is closed can be increased.

In the check valve 10 of the implementation form 1, since the valve portion 11 becomes difficult to vibrate when the valve portion 11 is opened, the sound accompanying the vibration of the valve portion 11 can be suppressed as much as possible. Therefore, when the inflow fluid such as drainage is used to check the valve 10 When it flows out, it will hardly be a cause of noise, especially like siphon drainage, which treats air and drainage at the same time with a strong attractive force. Even when the air mixed with drainage passes through, it can still be kept as low as possible. The valve portion 11 (that is, the check valve 10) generates a loud sound.

In addition, in a state where the check valve 10 is mounted on the seat, since the outer surface of the valve body portion 13 is formed in a hemispherical shape, the valve portion 11 becomes less prone to vibration and noise is less likely to be generated. Further, by forming the valve body portion 13 into a shape (for example, a substantially bowl shape) having an internal space protruding from the outflow direction, even if the drainage is in a reverse flow state, for example, not only the valve body portion 13 will not sag due to the backflow, On the contrary, there will be a force acting in the direction of strengthening the closing to further improve the stopping effect. In addition, in the direction of the drainage outflow, water will easily accumulate near the front end portion of the valve body portion 13 near the outlet, thereby It has the effect of easily opening the valve.

By forming the valve portion 11 on the rib portion 14, the backstop strength of the valve portion 11 can be increased. In addition, since the rib portion 14 formed with the valve portion 11 reaches the inflow port of the inflow fluid of the valve body portion 13, the valve portion 11 can be opened to the vicinity of the inflow port of the inflow fluid, so that the opening diameter of the valve portion 11 can be expanded. Come easy to open.

Next, a method for manufacturing the check valve 10 according to the first embodiment will be described.

When manufacturing the check valve 10 of the implementation type 1, for example, the valve portion 11 is cut and separated in advance to be formed by being closed by injection molding using an elastomer or a rubber material such as silicone rubber. The open state is closed by the action, and the mounting portion 12 can be deformed into a flat shape and formed into a mountain shape protruding from the outflow direction. The valve portion 11 can be closed by this deformation.

Since the valve portion 11 is formed in an open state that is cut and separated in advance, there is no way to form a groove of a check valve by cutting a closed portion made of a rubber material by using a cutter or laser light, as in a conventional check valve. In the method of slit-like opening, the degree of opening is changed due to the difference in cutting during cutting, and the desired performance cannot be obtained or the processing becomes complicated. That is, by implementing the manufacturing method of the check valve 10 of the mode 1, the check valve 10 with a small opening difference can be obtained easily.

In addition, since a mounting portion 12 formed in a mountain shape protruding from the outflow direction is provided, the mounting portion 12 can be deformed into a flat shape, and the valve portion 11 is closed by deformation. Therefore, even if the valve portion 11 is formed as In the state of being cut and separated in advance, when it is mounted on the socket (piping 15 in the embodiment 1), by making the mounting portion 12 flat, the check valve 10 with the valve portion 11 closed can be obtained. .

Next, a manufacturing method of the check valve assembly according to the first embodiment will be described.

As shown in FIG. 3, the manufacturing method of the check valve assembly of the first embodiment uses the check valve 10 of the first embodiment, and the mounting portion 12 of the check valve 10 is mounted on the seat (in the first embodiment) It is piping 15), the mounting portion 12 is deformed, and the valve portion 11 formed in the open state is closed by the closing operation. That is, by fitting a component having a flat surface shape (the receiving portion 15a of the piping 15 in Embodiment 1) into the groove 12a (see FIG. 3) of the mounting portion 12, the mounting portion 12 can be forced from The mountain shape is deformed into a flat shape, so that a check valve assembly in which the mounting portion 12 of the check valve 10 is mounted on a seat (a piping 15 in Embodiment 1) can be manufactured.

(Implementation type 2)

In addition, a seat as a component may be provided to form a check valve assembly.

As shown in FIG. 5, the check valve assembly 17 according to the implementation mode 2 includes the check valve 10 and the seat 18 related to the present invention. The check valve 10 is mounted on the check valve 10 and abuts against the installation. The portion 12 deforms the mounting portion 12 so that the valve portion 11 is in a closed state. The seat 18 is fitted into the groove 12 a of the mounting portion 12, and the flat surface portion 18 a will abut against the groove 12 a to deform the mounting portion 12 to make the valve portion 11 into a closed state. This socket 18 may have, for example, an attachment portion 18 b for attaching the socket 18 to a mounting object to which the check valve 10 is mounted.

In this check valve assembly 17, by inserting the seat 18 into the groove 12a of the mounting portion 12, the mounting portion 12 is forcibly deformed from a mountain shape to a flat shape. With this deformation, each valve body portion The pieces 13a approach each other, so that the ribs 14 abut and adhere to each other, so that the valve portion 11 is closed (see the two-dot chain line in FIG. 2).

With the check valve assembly 17 in which the valve portion 11 has been closed, for example, bolts, nuts, and the like, the attachment portion 18b of the seat 18 is fixed to the attachment object of the check valve assembly 17 (for example, drainage flow). Outlet), whereby the check valve 10 can be attached to the attachment target.

According to the check valve assembly 17 described above, even if the check valve attachment target to which the check valve 10 is attached does not have a groove 12 a fitted into the mounting portion 12 and has a flat surface shape (in Embodiment 2) In the case of the receiving portion 15a) of the piping 15, the mounting portion 12 can be deformed by the check valve assembly 17 itself, and the valve portion 11 can be closed.

Therefore, the check valve assembly 17 can be opened without being cut, and the check valve 10 having no cut-in difference and easy to manufacture can be attached to any check valve device regardless of whether there is a component having a flat surface shape. Attached object.

In addition, in the above-mentioned Embodiment 2, although the check valve 10 is the direction in which the valve body portion 13 is cut and separated as the three directions of the Y-shaped slot under the valve body portion 13 viewed from the protruding end side in plan view, It is not limited to this, and the direction in which the valve body portion 13 is cut and separated may be, for example, two directions of a flat slot, or three directions such as four directions of a cross slot. In addition, the shape of the slot of the valve portion 11 is not limited to a linear shape, and various shapes can be applied as long as the valve body portion 13 is cut and separated to form an outflow port.

FIG. 6A is a perspective view showing another example of the check valve of FIG. 1, and FIG. 6B is an explanatory view showing an open state and a closed state of the check valve of FIG. 6A. As shown in FIG. 6A, the check valve 20 has a valve portion 21 and a mounting portion 22, and the valve body portion 13 is viewed from the protruding end side in a plan view. In each of the directions, the mounting portion 22 is located at two positions on the circumference of the mounting portion 22, so that the boundary portions of the adjacent valve body portion pieces 23a are top portions, and the valve body portion pieces 23a are slightly centered in the circumferential direction. The bottoms are respectively, and the two mountain shapes formed by, for example, two equilateral sides will be continuous circular rings.

In this case, as in the case where the cutting direction is three directions of the Y-shaped slot, as shown in FIG. 6B, the ribs 24 of the valve body pieces 23 a approach each other due to the deformation operation of the mounting portion 22. And close to make the valve part 21 into a closed state (see the two-point chain line in the figure), so even if the valve part 21 is formed into an open state that is cut and separated in advance, by installing the check valve 20 on the seat, Then, the valve portion 21 is closed to close the outflow port of the check valve 20.

The other structures and operations are substantially the same as those of the check valve 10 in three directions with a Y-shaped slit in the cutting direction.

(Implementation Mode 3)

As shown in FIG. 7, the check valve assembly 110 of Embodiment 3 is composed of a check valve 111 and a seat 112 on which the check valve 111 is installed. The check valve 111 has a valve portion 113. The portion 113 is opened with respect to the inflow fluid to make it flow out, and closed to prevent the inflow with respect to the counterflow fluid that flows in the reverse direction from and to the outflow direction. The seat 112 has a receiving surface 112a, which can be deformed to The valve portion 113 of the attached check valve 111 is closed.

The check valve assembly 110 according to the third embodiment can be formed (manufactured) by installing (manufacturing) a check valve 111 by using, for example, a pipe 112 connected to a drain trap provided in a drain channel of a drain port. The check valve 111 is used as a counterflow by opening to allow the forward flow from the upstream side of the drainage channel to the downstream side, and closing the valve without allowing the reverse flow from the downstream side to the upstream side. Prevent valve.

As shown in FIG. 7 to FIG. 9, the check valve 111 of the third embodiment further has a valve body portion 114 and a mounting portion 115 mounted on the seat 112. The valve body portion 114 has a protrusion protruding in the outflow direction of the inflow fluid. When the internal space is mounted on the seat 112, the outer surface will be semi-spherical (e.g., roughly bowl-shaped). The mounting portion 115 is connected to the inflow opening of the valve body portion 114, and is formed over the entire periphery of the opening. The outer surface of the valve body portion 114 is a ring-shaped segment portion that is one step higher.

In the check valve assembly 110 of Embodiment 3, the seat 112 is formed by a flat shape, and the mounting portion 115 on which the check valve 111 is installed is formed in a mountain shape, that is, the seat 112 has a flat shape. The formed receiving surface 112a.

In addition, in the check valve assembly 110, the seat 112 may be formed into a curved shape, and may be formed to have a receiving surface 112a formed by a curved shape.

Hereinafter, the check valve 111 in a state before being manufactured (assembled) in the check valve assembly 110 according to the third embodiment, that is, mounted in front of the seat 112 will be described.

In the following, an example will be described in which the seat 112 of the check valve 111 is formed in a curved shape and has a receiving surface 112a formed by a curved shape.

In the check valve assembly 110 of the third embodiment, the valve portion 113 of the check valve 111 extends along the protruding direction of the valve body portion 114, that is, it extends in a curved shape along the outer surface of the hemisphere, and is formed so that the valve The body portion 114 is cut and separated in three directions to form an open slot, and the valve body portion 114 is cut and separated in three directions from the front end portion of the valve body portion 114 serving as an outflow port of the fluid to the mounting portion 115. Each of the valve body portion pieces 114a has a gap between the valve body portion pieces 114a adjacent to each other at the front end portion (see FIGS. 8 and 9).

In this embodiment, each valve body portion piece 114a having a slightly triangular appearance is located at a position that divides the entire circumference of the mounting portion 115 by approximately three equal parts, and is integrally formed with the mounting portion 115 as if standing from the mounting portion 115 Each of the valve body portion pieces 114 a is provided with a rib portion 116 continuous to the mounting portion 115 at two end edges except for the mounting portion 115 side. Then, the adjacent valve body portion pieces 114a become such that the rib portions 116 face each other.

That is, the valve portion 113 in the check valve assembly 110 according to the third embodiment is a rib portion 116 formed on the outer surface of the valve body portion 114 and is a separate and adjacent rib portion 116 when opened. When they are closed, they are brought into contact with each other, and a valve portion 113 called a lip-shaped opening is formed.

Although the valve portion 113 of the implementation mode 3 is an open state that has been cut and separated in advance (see Figs. 8 and 9), it is closed by the deformation of the mounting portion 115 formed into a deformable shape (see Fig. 8). 7, 9). Here, the closing operation means that the portions of the valve portion that are cut and separated in advance and opened are cut into contact with each other and are in close contact. That is, each valve body piece 114a cut in advance and separated into three directions of the valve body portion 114 is separated like an open lip and is opened with a gap, but is deformed by the mounting portion 115. Then, each of the valve main body pieces 114a separated from the mounting portion 115 for integration is brought into close contact with each other by the adjacent valve main body pieces 114a closing gaps, and closes like closed lips. Then, the valve portion 113 in the open state will be closed to close the outflow port of the check valve 111 (see the two-point chain line in FIG. 9).

In this way, since the check valve 111 in the check valve assembly 110 of the implementation mode 3 is formed in an open state that is cut and separated in advance, an opening can be formed without being cut, so the difference in openings is relatively small. Less, and manufacturing becomes easy.

The mounting portion 115 in the check valve assembly 110 according to the third embodiment is formed into a curved shape by using, for example, a rubber material. In this embodiment, the flat portion is elastically deformable (deformable shape), and The configuration is such that the valve portion 113 of the attached check valve 111 can be closed by being deformed from a flat shape to a curved shape (see FIG. 3). This mounting portion 115 is formed over the entire circumference of the inner peripheral surface of the mounting portion 115, and the groove 115a opened in the inner peripheral surface in the direction of the outer peripheral surface as a depth direction is formed to pass through the mounting portion 115 in a slightly wide center. That is, a shape along the flat shape of the mounting portion 115 (see a dotted line in FIG. 8).

As shown in FIG. 7 and FIG. 10, in the check valve assembly 110 according to the third embodiment, for example, the piping system serving as the seat 112 has a ring-shaped outward flange, which serves as a mounting portion of the check valve 111. The receiving surface 112a abutted by 115 is formed at the open end. More specifically, the receiving surface 112a is formed by connecting three portions of the flange approximately three-thirds of the entire circumference as the bottom portions 112b, and is formed by connecting the bottom portions 112b with the center of the bottom portion 112b as the top mountain shape to connect the bottom portions 112b. Each of the three mountain-shaped portions 112c will have a continuous curved mountain shape (see FIG. 9). The bottom portion 112b corresponds to a boundary portion of the adjacent valve body portion 114a of the check valve 111 mounted on the seat 112, and the mountain portion 112c corresponds to the valve body portion 114a of the check valve 111 mounted on the seat 112. When the check valve 111 is mounted on the seat 112, the portion of the mounting portion 115 that becomes the base of each valve body piece 114a is positioned to overlap the mountain-shaped portion 112c (see FIG. 7).

In the third embodiment, the check valve 111 is mounted on the seat 112, so that the mounting portion 115 becomes the base portion of each valve body piece 114a in a state overlapping the mountain-shaped portion 112c, so that the mounting portion 115 When it is in close contact with the receiving surface 112a, the mounting portion 115 having a flat shape is distributed throughout the entire circumference and deforms along the shape of the receiving surface 112a. In accordance with the deformation of the mounting portion 115, for example, the three valve body portion pieces 114a are adjacent to each other and each rib portion 116 is brought into abutment and close contact with each other to perform an open state (see a solid line in FIG. 9). The valve portion 113 is in a closed state (see the two-dot chain line in FIG. 9) for a closing operation.

Next, a method for manufacturing the check valve assembly 110 according to the third embodiment will be described.

The check valve 111 in the check valve assembly 110 of the implementation form 3 is molded and manufactured by injection molding using a rubber material such as an elastomer or silicone, and the valve portion 113 is cut and separated in advance to form In the open state that is closed by the closing action, the mounting portion 115 can be deformed into a mountain shape, and formed into a flat shape that can cause the valve portion 113 to be closed by this deformation.

Since the valve portion 113 is formed in an open state that is cut and separated in advance, there is no slit-like opening of the check valve formed by using a cutter or laser light to cut the closed portion made of a rubber material like a conventional check valve. In the method, the degree of opening is changed due to the difference in cutting during cutting, and the desired performance cannot be obtained, or the processing becomes complicated. That is, by implementing the manufacturing method of the check valve 11 in the check valve assembly 110 of the mode 3, it is possible to easily obtain the check valve 111 with a small opening difference, and even the manufacture of the check valve assembly 110 It will also become easy.

In addition, since a mounting portion 115 formed in a flat shape is provided, the mounting portion 115 is deformable into a mountain shape, and the valve portion 113 is closed by deformation. Therefore, the valve portion 113 is cut in advance even if it is formed. In the separated state, when the mounting portion 115 is made into a mountain-shaped state when it is mounted on the seat 112, it can still be a check valve 111 with the valve portion 113 in a closed state.

Next, the check valve 111 (see FIG. 8) of the third embodiment is formed by opening the valve portion 113 into an open state that is closed by a closing operation (see FIG. 8), and is mounted on the seat 112 of the third embodiment (see FIG. 8). Fig. 10) so that the valve portion 113 is closed (see Fig. 7).

In the third embodiment, the valve portion 113 is directed to the drainage outflow direction, and the check valve 11 in the check valve assembly 110 of the third embodiment is mounted on the seat 112 of the third embodiment in a curved shape. The receiving surface 112a is, for example, a ring-shaped outward-facing flange formed on the open end of a pipe forming a drain outlet (see FIG. 10). When the check valve 111 is mounted on the seat 112, and the seat 112 is fitted into the groove 115a of the mounting portion 115, the flat groove 115a (see FIG. 8) is closely adhered to the receiving surface 112a. Deformed along the receiving surface 112a, the mounting portion 115 is forcibly deformed from a flat shape (see the solid line in FIG. 9) into a curved mountain-like shape toward the curved outflow direction of the receiving surface 112a (see FIG. 9). Two-point chain line). That is, it is possible to manufacture the check valve assembly 110 in which the mounting portion 115 of the check valve 111 is mounted on the seat 112 to forcibly deform the flat mounting portion 115 into a mountain shape.

As a result, since the check valve assembly 110 of the implementation form 3 is configured to deform the mounting portion 115 of the check valve 111, the valve main body pieces 114a arranged with a gap are brought closer to each other, and each rib The parts 116 are in contact with each other and are in close contact, so that the valve part 113 is in a closed state (see the two-point chain line in FIG. 9). Therefore, even if the valve part 113 is formed into an open state that is cut and separated in advance (see FIG. 9) (Solid line), by installing the check valve 111 on the seat 112 and closing the valve portion 113, the outlet of the check valve 111 is closed (see FIG. 7).

Although the check valve assembly 110 according to the third embodiment is composed of a combination of the check valve 11 and a seat 112 on which the check valve 111 is installed, it can be various combinations.

FIG. 11 is an explanatory diagram showing a combination example of a check valve and a seat in a check valve assembly of Embodiment 3 in a table. In addition, in FIG. 11, for the sake of easy understanding, the display is not simplified by a curved surface (a combination of curved surfaces) but by a combination of flat surfaces. In addition, the seat 112 of the combination example C is opposite to the other combination examples and is oriented toward When convex, the bottom 112b becomes the top 112b.

As shown in FIG. 11, in addition to the check valve assembly 110 of Embodiment 3, the mounting portion 115 of the check valve 111 is a flat check valve 111, and the valve portion 113 of the check valve 111 is mounted so that In addition to the combination example A of the seat 112 which is formed into a curved shape by performing the closing operation, the installation example 115 where the mounting portion 115 and the seat 112 are both curved and formed upward, the mounting portion 115 and the seat 112 may be used. Each is a combination example C formed in a curved shape curved downward, and a mounting example 115 is formed in a curved shape curved downward, but the mount 112 is curved example curved up.

In the case of the combination example B, the mounting portion 115 and the socket 112 are both formed into a curved surface curved upward, and the bending angle of the socket 112 (the angle formed by the valley of the V-shape) β is smaller than that of the mounting portion 115. Bending angle (angle formed by a V-shaped valley) α. With this configuration, when the mounting portion 115 is mounted on the seat 112, the bending angle α of the mounting portion 115 can be forcibly reduced to deform it into the bending angle β, and the valve portion 113 can be closed (see FIG. The two-point chain line in 9), so that a check valve assembly 110 (see FIG. 7) in which the outlet of the check valve 111 is closed can be manufactured.

In the case of the combination example C, the mounting portion 115 and the socket 112 are both formed into a curved surface curved downward, and the bending angle β of the socket 112 is larger than the bending angle α of the mounting portion 115. With this configuration, when the mounting portion 115 is mounted on the seat 112, the bending angle α of the mounting portion 115 can be forcibly enlarged to deform it into the bending angle β, and the valve portion 113 can be closed (see FIG. The two-point chain line in 9), so that a check valve assembly 110 (see FIG. 7) in which the outlet of the check valve 111 is closed can be manufactured.

In the combination example D, the mounting portion 115 is formed in a curved shape curved downward, but the holder 112 is formed in a curved shape curved upward. With this configuration, when the mounting portion 115 of the check valve 111 is mounted on the seat 112, the mounting portion 115 can be forcibly deformed from a downwardly bent shape to a upwardly bent shape, and the valve portion can be formed. 113 is in a closed state (see the two-point chain line in FIG. 9), so that a check valve assembly 110 (see FIG. 7) in which the outlet of the check valve 111 is closed can be manufactured.

In addition, regardless of any of combination A, combination B, combination C, and combination D, as long as the bending angle β of the seat 112 is when the mounting portion 115 is mounted on the seat 112, the valve portion 113 can be closed. Just angle.

In the check valve assembly 110 of the third embodiment, the check valve 111 may be formed in a shape in which the groove 115 a is not provided in the mounting portion 115. In this case, for example, as shown in FIG. 12, the mounting portion 115 is brought into contact with and closely adheres to the curved surface of the seat 112 formed by the mountain-shaped curved surface, so that the mounting portion 115 is deformed from a flat shape to a mountain shape. And using, for example, the mountain-shaped mounting ring 117 corresponding to the seat 112 shown in FIG. 13, the rib 116 is fitted into the groove 117 a of the mounting ring 117 and overlaps with the mounting portion 115 to push the mounting portion 115 into Between the mounting ring 117 and the seat 112 (see FIG. 12), so as to maintain the deformed state of the mounting portion 115. The mounting ring 117 can be fixed in a state where the mounting portion 115 is inserted between the mounting ring 117 and the holder 112 by bolts, nuts, etc. (not shown).

In the check valve 111 in the check valve assembly 110 of Embodiment 3, the valve portion 113 opens and closes in three directions as opening directions when viewed from the top side. Therefore, when the valve portion 113 is closed, The closing force will be dispersed in three directions and weakened, and the valve portion 113 will be less prone to vibration and less likely to generate noise. Furthermore, in the check valve 111 of this embodiment, since the side on the side of the mounting portion 115 of the valve portion 113 is held by one side to open, the weak closing force when the valve portion 113 is closed also contributes to the valve. The portion 113 is less prone to vibration and less likely to generate noise. In the check valve 111 of the check valve assembly 110 according to the third embodiment, since the valve portion 113 is formed in the rib portion 116, the check strength when the valve portion 113 is closed can be increased.

Since the check valve 111 in the check valve assembly 110 of the implementation form 3 is difficult to vibrate when the valve portion 113 is opened, the sound accompanying the vibration of the valve portion 113 can be suppressed as much as possible. When the inflow fluid such as drainage flows out of the check valve 111, it will hardly be a cause of noise, especially like siphon drainage, where air and drainage are processed simultaneously with a strong attractive force, even if the drainage is mixed. When the air passes through, it is still possible to prevent the valve portion 113, that is, the check valve 111, from producing a loud sound.

In addition, in a state where the check valve 111 is mounted on the seat 112, since the outer surface of the valve body portion 114 is formed in a hemispherical shape, the valve portion 113 is less likely to vibrate and noise is less likely to be generated. In addition, the valve body portion 114 is formed into a shape (for example, substantially bowl-shaped) having an internal space protruding from the outflow direction. For example, even if the drainage is in a reverse flow state, not only the valve body portion 114 will not be depressed due to the backflow, On the contrary, there will be a force acting in the direction of strengthening the closing, and the stopping effect will be further enhanced. In addition, in the direction of the drainage outflow, water will easily accumulate near the front end portion of the valve body portion 114 near the outflow port, thereby facilitating It has the effect of easily opening the valve.

By forming the valve portion 113 on the rib portion 116, the backstop strength of the valve portion 113 can be increased. In addition, since the rib portion 116 formed with the valve portion 113 reaches the inflow fluid inlet of the valve body portion 114, the valve portion 113 can be opened to the vicinity of the inflow fluid inlet, so the opening of the valve portion 113 can be expanded. Caliber comes easy to open.

In addition, as described above, the seat 112 may be formed as a single unit instead of being formed by a pipe or the like, and may be configured to have a ring-shaped portion as the receiving surface 112a to form a check valve assembly. The body 118, and the receiving surface 112a is formed in a curved shape that causes the valve portion 113 of the installed check valve 111 to perform a closing operation.

(Implementation Mode 4)

14 is a perspective view schematically showing a check valve assembly according to a fourth embodiment of the present invention. As shown in FIG. 14, the check valve assembly 118 has a check valve 111 and a seat 119 in the check valve assembly 110 of the implementation mode 4, and is mounted on the check valve 111. The mounting portion 115 is attached to deform the mounting portion 115. The socket 119 has a receiving surface 119a that abuts against the groove 115a when the socket 119 is fitted into the groove 115a of the mounting portion 115. The mounting portion 115 is deformed along the receiving surface 119a, and the valve portion 113 is closed. status. This seat 119 may have, for example, an attachment portion 119 b for attaching an installation target to which the check valve assembly 118 is installed.

In this check valve assembly 118, by fitting the seat 119 into the groove 115a of the mounting portion 115, the mounting portion 115 is forcibly deformed from a flat shape to a mountain shape. With this deformation, each valve body The parts 114a will approach each other, and the ribs 116 will abut and close to each other, and the valve portion 113 in the open state (see the solid line in FIG. 9) will be forced to become the closed state (see the two in FIG. 9). Dot chain line).

With the check valve assembly 118 in which the valve portion 113 is closed, the attachment portion 119b of the seat 119 can be fixed to the attachment object of the check valve 111 (for example, a drain outlet) by bolts, nuts, etc. .

According to the check valve assembly 118 described above, even if the check valve attachment target to which the check valve 111 is attached does not have the groove 115 a fitted into the mounting portion 115 and has a curved seat 112 formed in a mountain shape. In the case of the valve assembly 113 itself, the mounting portion 115 can be deformed by the check valve assembly 118 itself, and the valve portion 113 can be closed.

Therefore, the check valve assembly 118 can be opened without being cut, and the check valve 111 having no cut-in difference and easy to manufacture can be attached regardless of the presence or absence of a curved seat 112 having a mountain shape or the like. We attach object to arbitrary check valve.

In addition, in the above-mentioned Embodiment 4, the check valve 111 of the check valve assemblies 110 and 118 is cut in the direction in which the valve body portion 114 is cut and separated as a Y-shaped view of the valve body portion 114 in a plan view from the protruding end side. The three directions of the slit-shaped slot are not limited to this. The direction in which the valve body portion 114 is cut and separated may be, for example, two directions of the slot-shaped slot, or three directions of the four directions of the cross-shaped slot. Direction above. In addition, the shape of the slot of the valve portion 113 is not limited to a straight shape, and various shapes can be applied as long as the valve body portion 114 is cut and separated to form an outflow port.

FIG. 15 is a perspective view showing a state in which the check valve in the check valve assembly of FIG. 14 is installed before the seat. FIG. 16 is an explanatory diagram showing an open state and a closed state of the check valve of FIG. 15. As shown in FIG. 15, the check valve 120 in the check valve assembly according to the embodiment 4 has a valve portion 121 and a mounting portion 122. The valve body portion 123 is viewed from the protruding end side in a plan view. The directions of cutting and separating are two directions of the slit, and the mounting portion 122 is formed in a flat surface shape.

In this case, as in the case where the cutting direction is the three directions of the Y-shaped slot, as shown in FIG. 16, the ribs 124 of the valve body portion pieces 123 a approach each other due to the deformation operation of the mounting portion 122. And close to make the valve part 121 into a closed state (see the two-point chain line in the figure), so even though the valve part 121 is formed into an open state that is cut and separated in advance, the check valve 120 is mounted on the seat 112 Then, the valve portion 121 will be closed to close the outflow port of the check valve 120.

Other structures and operations are substantially the same as those of the check valve 111 in the three directions in which the cutting direction is a Y-shaped slot.

Claims (12)

    A check valve is provided with a valve portion which is opened with respect to an inflow fluid to allow it to flow out in a state of being installed in a seat, and is closed to prevent the inflow with respect to a counterflow fluid having a reverse direction from and to an outflow direction. And a mounting portion, which is mounted on the socket; the valve portion is formed in an open state that is closed by a closing action; the mounting portion is formed so that the valve portion can perform the closing action by deformation Deformed shape.         For example, the check valve of the first patent application range, wherein the mounting portion is formed into a mountain shape that can be deformed into a flat shape, and is configured to make the valve portion become the closed by deforming from the mountain shape to the flat shape. status.         For example, the check valve of the scope of patent application No. 1 or 2, it also has a valve body part, the valve body part has an internal space protruding from the outflow direction of the inflow fluid; the valve part is installed in the state of the seat Next, the valve body portion extends along the protruding direction of the valve body portion, and when it is opened, the valve body portion is cut and separated in three directions or more to form an open slot shape.         For example, the non-return valve according to item 3 of the patent application range, wherein the valve body portion is formed in a hemispherical shape in a state of being mounted on the seat.         For example, the check valve of claim 3 or 4, wherein the valve portion is formed on a rib projecting from the outer surface of the valve body portion.         For example, the check valve according to item 5 of the application, wherein the rib portion reaches the inflow port of the inflow fluid of the valve body portion.         A method for manufacturing a check valve, the check valve has: a valve portion, in a state of being mounted on a seat, opening out with respect to an inflow fluid to make it flow out, and being opposite to the direction from and to the flow direction The countercurrent fluid is closed to prevent its inflow; and a mounting portion is mounted on the socket; the valve portion is formed into an open state that is closed by a closing action; the mounting portion is deformed into a flat shape and formed as The mountain shape protruding from the outflow direction allows the valve portion to be closed by the deformation.         A check valve assembly is a check valve assembly composed of a check valve such as item 1 of the patent application scope and a seat on which the check valve is installed; the check valve has a valve portion, and the valve The part will open with respect to the inflow fluid to make it flow out, and will close with respect to the inflow fluid with reverse direction from and out to prevent its inflow; the bearing system has a bearing surface, which can be deformed to make the installation The valve portion of the check valve is closed.         For example, the check valve assembly of item 8 of the patent application range, wherein the seat is composed of a flat shape; the mounting portion on which the check valve is installed has a mountain shape.         For example, the check valve assembly of the eighth aspect of the patent application, wherein the seat is formed in a curved shape.         A method for manufacturing a check valve assembly, which is used to obtain a check valve assembly manufacturing method of a check valve assembly composed of a check valve and a seat on which the check valve is installed; it is used as applied The check valve of any one of the scope of patents 1 to 6; the mounting portion of the check valve is mounted on the socket, and the mounting portion is deformed to be opened by a closing action In this state, the valve portion is closed.         A method for manufacturing a check valve assembly is a method for manufacturing a check valve assembly as described in any one of claims 8 to 10 of the scope of application for a patent; The check valve, which is formed in an open state to be closed by a closing action, is mounted on the receiving surface of the seat so that the valve portion becomes a closed state.