JPH027609Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field] The present invention relates to a strainer device installed in a flow path within a faucet main body, and particularly to a strainer device having a configuration in which a check valve is coaxially arranged.

[Prior Art and its Problems] Conventionally, there is a strainer device having a structure in which a check valve is integrally installed, as described in Japanese Utility Model Publication No. 13617/1983. As shown in FIG.
01 is screwed on, and a check valve cylinder 102 is fixed to the lid 101. A valve shaft 105 is attached to the check valve cylinder 102 and has a valve body 104 attached to the check valve seat 103 at the upper end thereof, and is urged in the valve closing direction by a spring 106. Reference numeral 107 denotes a strainer cylinder having a mesh portion, which is fixed coaxially with the valve shaft 105 between the lid 101 and the annular stepped portion 102a of the check valve cylinder 102.

In the above configuration, the strainer cylinder 107 and the check valve components can be inspected and replaced by removing the lid 101 from the faucet main body 100. However, the check valve components and the strainer cylinder 107
are integrally connected, so the same strainer cylinder 10
7. Although it is easy to remove foreign matter adhering to the outer surface, the inner surface cannot be cleaned unless the check valve cylinder 102 is removed from the lid 101. Therefore, strainer tube 1
When cleaning the strainer tube 107, the lid 101 and the check valve tube 102 are integrally connected and support the strainer tube 107.
There is a drawback that maintenance, inspection and replacement of the strainer cylinder 107 are complicated.

[Purpose of invention]

The present invention aims to solve the above problems, and by making the strainer components removable from the faucet body independently of the check valve components, maintenance and inspection of the strainer section can be easily performed. The purpose is to do something.

[Structure of the idea]

In order to achieve the above object, the present invention opens the flow path of the faucet main body, provides a mounting opening for the strainer cylinder, integrates the strainer cylinder into a lid that is screwed into the mounting opening, and The strainer device is provided with a check valve downstream of a flow path passing inside and outside of the strainer cylinder, wherein the check valve is inserted and fixed into the flow path from the mounting opening and has a peripheral wall open. The strainer cylinder has a double pipe structure surrounding the check valve cylinder body, and is inserted from the mounting opening and is removably fixed to the faucet main body by the lid body. It is characterized by

〔Example〕

The present invention will be explained below based on embodiments shown in the drawings.

In this embodiment, a strainer device according to the present invention is applied to a hot water inlet and a water inlet of a thermostatic mixing valve.

FIG. 2 is a partially cutaway front view of the thermostat mixing valve, and FIG. 3 is a cross-sectional view taken along the - line arrow in FIG. 2. The thermostatic mixing valve main body 50 (hereinafter referred to as "valve main body 50") includes a water chamber 51, a water chamber 52, and both chambers 51, 52.
The control valve body 54 is operated by operating the handle 53.
The mixing chamber is divided into 553 chambers that communicate with each other via the mixing chamber. A hot water supply pipe 56 and a water supply pipe 57 are connected to the hot water chamber 51 and the water chamber 52, respectively, and both end surfaces of the control valve body 54 are brought into contact with and separated from the hot water valve seat 58 and the water valve seat 59 to supply mixed water at a desired temperature. This is a configuration that can obtain the following.

A strainer device A according to the present invention is connected in communication between the hot water supply pipe 56, the water supply pipe 57, and the valve body 50. Here, the hot water supply system will be described.

In the figure, reference numeral 1 denotes the main body of the faucet, which has an inlet 2 communicating with the hot water supply pipe 56 and an outlet 3 whose axis is orthogonal to the inlet 2 and communicating with the hot water chamber 51 of the valve body 50. An L-shaped flow path is formed. A screw hole 4 is formed below the outlet 3, and a check valve cylinder body 5 having a check valve V is screwed into the screw hole 4. Reference numeral 6 denotes a valve shaft with a valve body 7 made of a packing or the like attached to the upper end and is slidably supported within the check valve cylinder body 5 by a guide piece 8; This is a spring that biases the valve shaft 6 toward the valve seat 10 forming the valve shaft 6.

The check valve cylindrical body 5 includes an upper cylindrical body 5a that is screwed into the screw hole 4 and has a valve seat 10 on its upper end surface, a lower cylindrical body 5b that slidably supports the valve shaft 6 and is fitted with a spring 9, and an upper and lower cylinder. It is composed of a connecting portion 5c that connects the two cylindrical bodies 5a and 5b. The connecting part 5c area forms a water passage part 5d that communicates with the inlet 2, and the water passage part 5d can communicate with the inside of the upper cylinder 5a to define a flow path in the direction of the outlet 3.

An annular flange 11 projecting in the radial direction is integrally formed on the check valve cylinder 5, and a cylindrical portion 12 extends downward from the flange 11.

Reference numeral 13 denotes a lid which is screwed onto the strainer cylinder attachment port 14 having a screw formed coaxially with the screw hole 4, 14 a gasket, and 15 the upper cylinder of the lid 13 and the check valve cylinder 5. This is a strainer cylinder that is located between the bodies 5a and covers the entire area of the water passage portion 5d.

Fig. 4 shows a partially enlarged strainer cylinder 15.
5 is a sectional view taken along the - line in FIG. 4. The strainer cylinder 15 is made of a belt-shaped stainless steel plate with reinforced parts 16 on both sides in the circumferential direction and in the vertical direction.
, and the other part is etched to form a mesh part 18 with a large number of small holes 17,
Further, this is wound into a cylindrical shape and connected by caulking portions 19. 20 is a strainer cylinder 15 located below the caulking part 19 and attached to the lower reinforcing part 16.
This is a notch formed in the axial direction.

FIG. 6 is an enlarged sectional view of the lid 13.
is formed into a cylindrical shape with a bottom, and the strainer cylinder mounting port 14
The upper outer periphery has a screw 13a that is screwed into the upper part. Inside, an annular inclined surface 13b for easily fitting the strainer cylinder 15 and a fitting hole 13c for fitting and holding the strainer cylinder 15 are formed at the upper end side, and the strainer cylinder 1 is formed at the lower end of the fitting hole 13c.
A step-shaped annular receiving portion 13d is formed to receive the lower end of the fifth member.

Here, the outer diameter of the strainer tube 15 when molded is slightly larger than the inner diameter of the fitting hole 13c of the lid body 13,
Moreover, the inner diameter of the strainer cylinder 15 is set in a dimensional relationship such that it can be fitted into the cylindrical portion 12 of the check valve cylinder body 5.

In the above configuration, the strainer tube 15 is connected to the lid body 1.
3, the lower end side reinforcing portion 16 of the strainer tube 15 is guided by the annular inclined surface 13b and reaches the inside of the fitting hole 13c. Since a notch 20 is formed in the reinforcing part 16, the reinforcing part 16 contracts in diameter when passing through the annular inclined surface 13b, and can be inserted into the insertion hole 13c, so that the lower end touches the annular receiving part 13d. The strainer cylinder body 15 and the lid body 1 are in contact with each other.
2 are integrally connected. The reinforcing portion 16 is in close contact with the wall surface of the insertion hole 13c, and the lower end surface is brought into contact with the annular receiving portion 13d.
The lower part thereof is connected to the lid body 13 with a sealing property.

To install the check valve cylinder 5 and the strainer cylinder 15, first install the check valve cylinder 5 with the valve shaft 6 and the valve body 7 attached.
is inserted through the strainer cylinder mounting port 14, and the upper cylinder body 5a is screwed into the screw hole 4 and fixed to the faucet main body 1.

Next, the lid body 13 is screwed onto the strainer cylinder mounting port 14 of the faucet main body 1, and the strainer cylinder 1
A strainer device equipped with a check valve is formed by fitting the upper end of 5 into the cylindrical portion 12 of the check valve cylinder body 5 and mounting it with the upper end edge in contact with the lower surface of the annular flange 11. be able to.

In this embodiment, the faucet main body 1 having the strainer tube 15 and the check valve V is attached to the upstream side of the valve body 50 of the thermostatic mixing valve. You can also install it.

In the strainer device described above, the strainer tube 15 is integrally attached to the lid 13, so that only the strainer tube 15 can be taken out by simply removing the lid 13 from the faucet main body 1, making cleaning and replacement unnecessary. It can be done easily.

That is, the components of the check valve are fixed to the faucet main body 1 by the check valve cylinder 5, but the strainer cylinder 15 is disposed between the strainer cylinder 15 and the check valve cylinder 5.
The cylindrical portion 12 is only fitted onto the outside and not connected to each other, and by removing the lid 13, only the strainer cylinder 15 can be separated from the check valve cylinder 5 and pulled out.

Therefore, since no check valve components are included in the strainer cylinder 15 taken out from the faucet main body 1, the mesh portion 18 can be easily cleaned from inside and outside.

〔effect〕

As described above, according to the present invention, only the strainer cylinder can be taken out from the faucet main body, and since it does not include check valve components, cleaning etc. can be easily performed. This has the effect that the water does not flow out, does not wet the floor, and does not contaminate the secondary side of the check valve.

[Brief explanation of the drawing]

Fig. 1 is a cross-sectional view of essential parts of a conventional strainer device equipped with a check valve, Fig. 2 is a partially cutaway front view of a thermostatic mixing valve equipped with a strainer device according to the present invention, and Fig. 3 is the same. 2 is a sectional view taken along the - line in Fig. 2, Fig. 4 is a partially enlarged front view of a part of the strainer cylinder, Fig. 5 is a view taken along the - line in Fig. 4, and Fig. 6 is a lid body. FIG. DESCRIPTION OF SYMBOLS 1... Faucet main body, 4... Screw hole, 5... Check valve cylinder body, 14... Strainer cylinder attachment port, 15... Strainer cylinder, V... Check valve.

Claims (1)

[Scope of utility model registration request] The flow path of the faucet main body is opened, a mounting port for the strainer tube is provided, and the strainer tube is integrated into a lid that is screwed into the mounting port, and the flow path that passes inside and outside of the strainer tube is reversed downstream. The strainer device is provided with a stop valve, and the check valve includes a check valve cylinder inserted and fixed into the flow path from the mounting port and having an open peripheral wall, and the strainer cylinder is connected to the check valve. A strainer device having a double tube structure surrounding a cylindrical body, which is inserted through the mounting opening and is detachably fixed to a faucet main body by the lid body.