JP5076605B2 - Valve device - Google Patents

Description

  The present invention relates to a valve device.

There are many types of valve devices. For example, the drainage valve device having the simplest structure has a drain pipe (including a support fitting) provided with a toilet seat at the upstream end, and upstream and downstream so as to open and close the toilet seat. A valve body that is movably installed in a direction, and a valve stem and other valve operation parts for operating the valve body are provided.
Further, the valve body is configured to be opened and closed by an operation mechanism that is inserted from the outside into the water pipe and the support fitting through the valve operation component (see each patent document described later).

Since the conventional valve device has the above-mentioned valve operation parts inside the pipe, the number of parts is large, and the valve operation is configured to be performed from the outside of the pipes via the valve rod and the like. Therefore, the structure is so complicated.
Therefore, various germs are easily generated or propagated inside, and the entire degradability and cleaning properties are also difficult.
Japanese Utility Model Publication No. 43-16202 Japanese Utility Model Publication No. 50-40029 JP 2006-70630 A JP 2004-232332 A

An object of the present invention is to simplify the structure of the valve device, particularly inside the piping system, and to improve the disassembly and cleaning properties.
An object of the present invention is to provide a valve device that has a simpler internal structure and is easy and easy to disassemble and clean.
Another object of the present invention is to provide a valve device that can be operated only from the outside of the piping system and has a smaller possibility of generation or propagation of germs inside the structure.

In order to solve the above problems, a valve device according to the present invention includes a housing 1 having a cylindrical inner surface, and a plug body 2 that is movably and water-tightly inserted into the housing 1 in the upstream and downstream directions. 2 has a valve portion 20 on the upstream side and a flow passage 21 that flows from the circumferential direction to the downstream side of the valve portion 20 and flows out in the axial direction, and when the plug body 2 moves a predetermined amount downstream. The flow path 21 is closed, and the flow path 21 is configured to be opened when the plug body 2 moves a predetermined amount to the upstream side. The outer peripheral portion of the downstream portion 22 of the plug body 2 the projecting to the downstream side of the housing 1 to the state can be reciprocally operate the plug body 2 to a state opened from the closed state, the outer peripheral portion of the valve portion 20 and O-ring 20a is mounted, the flow road 21, to the O-ring 20a is the housing 1 The plug body 2 to the circle is configured so that closed when moved to the downstream side, the O-ring 23 and the O-ring 20a which is formed separately, attached to the outer circumference of the plug body 2, the O the ring 23, are the most important feature that the arrangement so as not to escape from the housing 1 even when the plug 2 is moved within range extending downstream limit the upstream limit.

According to the valve device of the present invention, the plug body 2 that is movably and watertightly inserted in the housing 1 in the upstream and downstream directions has the valve portion 20 on the upstream side and the downstream side of the valve portion 20 in the circumferential direction. The flow path 21 flows in from the axial direction and flows out in the axial direction.
That is, since the valve portion 20 and the plug body 2 are integrated, the internal structure is simpler, the number of parts is reduced correspondingly, and disassembly and cleaning can be performed more easily and easily.

Further, since the plug body 2 having the valve portion 20 is movably and water-tightly inserted into the housing 1 in the upstream / downstream direction, the pipe is connected to the downstream end of the plug body 2 protruding from the housing 1 in a water-tight manner. In addition, since the plug body 2 can be operated in the upstream and downstream direction through the portion protruding from the housing 1 to the downstream side, the valve operation can be performed only from the outside of the piping system.
Therefore, in combination with the absence of valve operation parts inside, the generation or propagation of germs inside is suppressed.

Hereinafter, an optimum embodiment of a valve device according to the present invention will be described with reference to the drawings.
First Embodiment FIG. 1 is a partially cut-away partial sectional view showing a first embodiment of a valve device according to the present invention, and FIG. 2 is a positional relationship between operation operation means and other components in the valve device of FIG. FIG. 3 is a cross-sectional view taken along arrow AA in FIG.

This embodiment shows a state implemented as a discharge valve device for a tank 4. A unit a of the valve device is inserted in a housing 1 having a cylindrical inner surface and movable and watertight in the upstream and downstream directions in the housing 1. It is comprised from the stopper body 2 made.
The plug body 2 has a valve portion 20 on the upstream side and a flow path 21 that flows from the circumferential direction to the downstream side of the valve portion 20 and flows out in the axial direction. On the other hand, the flow path 21 is closed when a predetermined amount moves downstream, and the flow path 21 is opened when the plug 2 moves a predetermined amount upstream.
The outer peripheral portion of the downstream portion 22 of the plug body 2 protrudes to the downstream side of the housing 1 so that the plug body 2 can be reciprocated from the closed state to the opened state.

FIG. 1 shows a state in which the plug body 2 moves to the limit upstream and the flow path 21 is opened to the maximum.
In this embodiment, an O-ring 20 a is embedded in the outer peripheral portion of the valve portion 20, and the plug body 2 is downstream of the flow path 21 until the O-ring 20 a is accommodated in the housing 1. The flow path 21 is configured to be closed when moved to the side.
An O-ring 23 is attached to the outer peripheral portion of the plug body 2 at a position where the plug body 2 does not escape from the housing 1 even when the plug body 2 has moved to the limit in the upstream / downstream direction. It is in a state where it is inserted in a watertight manner.

The housing 1 is watertightly installed on the bottom of the tank 4 with the upstream end of the housing 1 facing the inside from the bottom of the tank 4.
In this embodiment, the housing 1 has a flange portion 10 formed integrally with the outer periphery thereof, and is fixed to the bottom surface of the tank 4 by a plurality of bolts 11 (FIGS. 1 and 2), and is upstream of the flange portion 10 of the housing 1. Between the outer periphery of the side and the mounting hole at the bottom of the tank 4, an O-ring 12 is inserted in a compressed form to be watertight.

On the outer peripheral portion of the downstream portion 22 protruding from the housing 1 of the plug body 2 is provided an operation operating means 3 for reciprocating the plug body 2 from a position where the flow path 21 is closed to a position where the flow path 21 is opened. It has been.
This operation operation means 3 is an insulator-like operation that is attached to the attachment plate 31 so as to be rotatable along the axial direction of the downstream portion 22 of the plug body 2. And a handle 30.
The mounting plate 31 is a metal plate bent into an angle, and the horizontal portion 31b is fixed to the bottom of the flange portion 10 by a plurality of screws 31c (FIGS. 1 and 2). An operation handle 30 is rotatably attached to a vertical portion as a main body by a shaft 30c (FIGS. 1 and 2).

The distal end portion of the operation handle 30 located on the plug body 2 side is formed in a bifurcated portion 30b (FIG. 2), and the distal end of each bifurcated portion 30b constitutes a locking portion 30a composed of a short shaft pin or roller. Each locking portion 30a is locked in a state of being guided to a ring-shaped groove portion 22a formed on the outer peripheral portion of the downstream portion 22 of the plug body 2.
A claw lever 32 is rotatably attached to the grip portion side of the operation handle 30 in the direction of the locking portion 30a by a shaft 32c, while the tip of the claw lever 32 is attached to the mounting plate 31. A plurality of claw teeth 31a are formed in a state where the claw portion 32a is hooked.
Further, between the grip portion side of the operation handle 30 and the claw lever 32, the claw portion 32a at the tip of the claw lever 32 is attached with the claw so as to keep a state where it is caught on any of the claw teeth 31a. A spring 32b that biases the lever 32 is attached.

Reference numeral 31d is a stopper attached to the mounting plate 31 to prevent the stopper 2 from moving beyond the limit position on the downstream side, and reference numeral 2a is a stopper attached to the mounting plate 31. This stopper is formed on the stopper 2 in order to prevent it from moving beyond the limit position.
However, these stoppers 2a and 31d are not essential components as long as the claw teeth 31a, the claw portions 32a of the claw lever 32 and the spring 32b are provided.

The valve device of the embodiment is used in a state where a drain pipe (not shown) is connected to the end of the downstream portion 22 of the plug body 2.
In such a use state, when the locking portion 30a of the operation handle 30 of the operation operation means 3 is at the upper limit position in the flow direction shown by the solid line in FIG. 1, the valve portion 20 of the plug 2 is at the upper limit position. The flow path 21 is opened to the maximum. At this time, the stopper 2 a of the plug body 2 abuts against the downstream end of the housing 1.

  On the other hand, when the grip portion side of the operation handle 30 is grasped together with the claw lever 32 and rotated counterclockwise in FIG. 1 to the limit, and the hand is released from the operation handle 30 and the claw lever 32, the claw of the claw lever 32 is obtained. The part 32a is caught by the claw tooth 31a near the uppermost position, and these stop at the position of the two-dot chain line in FIG. In this state, the plug body 2 moves to the lower limit position in the flow direction, the valve portion 20 is immersed in the housing 1, and the O-ring 20 a of the valve portion 20 comes into close contact with the inner peripheral surface of the upper end portion of the housing 1. Therefore, the flow path 21 is closed. At this time, the operation handle 30 abuts against a stopper 31 d attached to the attachment plate 31.

  When the operation handle 30 is stopped while being rotated together with the claw lever 32, the claw portion 32a of the claw lever 32 is hooked on one of the claw teeth 31a at that position and acts as a stopper. It becomes a state that is neither fully closed nor fully open, and the flow rate of the fluid flowing through the flow path 21 can be adjusted.

According to the valve device of the above-described embodiment, the unit a has only two components, the housing 1 and the plug body 2, and the internal structure is simpler, the number of parts is reduced correspondingly, and disassembly and cleaning are easily performed. Can do.
In particular, the operation handle 30 constituting the operation operation means 3 as described above is attached to the flange portion 10 of the housing 1, and the locking portion 30 a at the distal end of the operation handle 30 is protruded downstream from the housing 1. By locking to the downstream portion 22, the whole is integrated, so that handling, attachment / detachment as a whole becomes very easy, and disassembly and cleaning work becomes easier.

Since the plug body 2 having the valve portion 20 is inserted in the housing 1 so as to be movable in the upstream and downstream directions in a watertight manner, the pipe is connected to the downstream end of the plug body 2 protruding from the housing 1 in a watertight manner. Since the plug body 2 can be operated in the upstream / downstream direction through the portion protruding from the housing 1 to the downstream side, the valve operation from the outside of the piping system becomes possible.
Therefore, in combination with the absence of valve operation parts inside, the generation or propagation of germs inside is also suppressed.

By configuring the operation handle 30 in the operation operation means 3 in a lever shape, the plug body 2 can be operated with a smaller force.
A lever 32 with a pawl is rotatably attached to the grip portion side of the operation handle 30 in the direction of the locking portion 30a. On the other hand, the tip of the lever 32 with the pawl is attached to the mounting plate 31 by a spring 32b. Since the plurality of claw teeth 31a are formed in a state where the claw portion 32a is hooked, the operation handle 30 can stop the plug body 2 at a desired position in the operation stroke.

Second Embodiment FIG. 4 is a half sectional view showing a second embodiment of the valve device according to the present invention, in which the operation operation means 3 is omitted.
The housing 1 is water-tightly attached to the downstream end of the upstream pipe 5 via an O-ring 12, and the plug body 2 is movably and liquid-tightly inserted into the housing 1 in the upstream and downstream directions. Yes. The upstream pipe 5 and the housing 1 are fixed by bolting the flange portions 10 to each other.
Although most of the configuration of the plug body 2 is the same as that of the first embodiment, the configuration of the valve portion 20 is different, so that the different configuration will be described.

The outer diameter of the valve part 20 is slightly larger than the other part of the plug body 2 so that the valve part 20 always protrudes from the housing 1 to the upstream side, and a sealing material 20b is attached to the outer peripheral part on the downstream side. Yes. In the state shown in the figure, the flow path 21 of the plug body 2 is opened to the maximum. However, the plug body 2 moves in the downstream direction, and the sealing material 20b forms a toilet seat (not shown). The channel 21 is configured to be closed when it comes into contact.
The toilet seat portion at the upstream end of the housing portion 1 is a plane seat in the illustrated form, but may be in the form of a conical seat or an implanted seat.
The downstream end portion of the downstream portion 22 projecting from the housing 1 of the plug body 2 in the downstream direction is movable in the upstream and downstream directions into the end portion of the downstream pipe 6 via the O-ring 24 and is watertightly connected. The downstream pipe 6 is fixed to another member (not shown).

The valve device according to this embodiment is provided with the same operation operation means 3 as in the first embodiment, so as to shut off or open the flow path 21 in the middle of the fluid piping, or the flow path 21. Used as a regulating valve to regulate the flow rate in
Other configurations and operational effects of the valve device according to this embodiment are substantially the same as those of the valve device according to the first embodiment, and thus description thereof is omitted.

Other Embodiments The unit a in the valve device of the first embodiment can be used in the same state as the unit a of the valve device of the second embodiment, and the unit a in the valve device of the second embodiment is also the first. It can be used in the same state as the unit a of the valve device of one embodiment.
In the valve device of each of the embodiments described above, the operation operation means 3 is not shown in the drawing, but the plug body 2 is not shown through the outer peripheral portion of the downstream portion 22 instead of directly operating the plug body 2 from the outer peripheral portion. It can also be implemented by a mode in which it is indirectly operated by a remote control mechanism.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a partial cutaway sectional view, partly broken, showing a first embodiment of a valve device according to the present invention. It is a schematic plan view which shows the positional relationship of the operation operation means and other components in the valve apparatus of FIG. It is sectional drawing which follows the arrow AA of FIG. It is a half cut sectional view which shows 2nd Embodiment of the valve apparatus which concerns on this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Housing 10 Flange part 11 Bolt 2 Plug body 20 Valve part 12, 20a, 23, 24 O-ring 20b Seal member 21 Flow path 22 Downstream part 3 Actuation operation means 30 Operation handle 30a Locking part 31 Mounting plate 31a Claw tooth 32 Claw lever 32a Claw portion 32b Spring 4 Tank 5 Upstream piping 6 Downstream piping

Claims (4)

A housing (1) having a cylindrical inner surface, and a plug body (2) inserted in the housing (1) so as to be movable in the upstream and downstream directions in a watertight manner, the plug body (2) is a valve upstream. And a flow path (21) that flows from the circumferential direction to the downstream side of the valve section (20) and flows out in the axial direction, and the plug (2) moves a predetermined amount downstream. The channel (21) is closed, and the channel (21) is opened when the plug (2) moves a predetermined amount upstream, and the downstream portion of the plug (2) the outer peripheral portion of the projecting downstream of the housing (1) the stopper to a state to be opened from a state in which the flow path (21) is closed (2) in a state capable of reciprocating operation, the valve unit (20 ) Is attached to the outer periphery of the O-ring (20a), and the flow path ( 21) includes the O-ring (2 0a) is configured to be closed when the plug body (2 ) moves downstream until it fits into the housing (1), and is formed as an O-ring ( separate from the O-ring (20a)). 23) is attached to the outer periphery of the plug body (2), and the O-ring (23 ) is moved to the housing (1) even when the plug body (2) moves within the range from the upstream limit to the downstream limit. A valve device characterized by being arranged so as not to escape from the inside . 2. The valve device according to claim 1, wherein the housing (1) is installed in a watertight manner with an upstream end of the housing (1) facing the inside of the tank (4) from the bottom of the tank (4). . The housing (1) integrally has a flange portion (10) on the outer peripheral portion, and the flange portion (10) is fixed to the bottom of the tank (4),
In the outer peripheral portion of the downstream portion protruding from the housing (1) of the plug (2), a position where the flow path (21) opens from a position where the flow path (21) closes the plug (2). Operating means (3) for reciprocating operation is provided,
The operation operation means (3) includes a mounting plate (31) fixed to the flange portion (10),
Attached to the mounting plate (31) so as to be rotatable along the axial direction of the plug (2), a locking portion (30a) at the tip protrudes from the housing (1) of the plug (2). A lever-like operation handle (30) locked to the outer peripheral portion of the downstream portion,
The valve device according to claim 2 . A lever (32) with a claw is provided on the grip portion side of the operation handle (30) so as to be rotatable in the direction of the locking portion (30a) at the tip, and the claw is provided on the mounting plate (31). A plurality of claw teeth (31a) are formed in a state where the claw portion (32a) of the lever (32) is hooked, and the claw lever (32) is moved by the spring (32b) so that the claw portion (32a) is moved to the claw teeth (32b). The valve device according to claim 3, wherein the valve device is biased in a direction to keep the state of being caught by any one of 31a).

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