JP4430432B2 - Axial stop cock - Google Patents

Description

  The present invention relates to an axial-flow stop cock installed in a water supply pipe.

Conventionally, a stop cock provided in a water supply pipe is provided with a valve port that communicates a primary side flow path leading to the inlet and a secondary side flow path leading to the outlet in a valve box having an S-shaped flow path at the inlet and the outlet. , A piece for opening and closing the valve opening is provided, and the piece is connected to a spindle that can advance and retreat in the axial direction thereof. It is made to pass water (for example, refer nonpatent literature 1).
Edited by Japan Valve Industry Association, “Valve Manual” published by Nikkan Kogyo Shimbun, published on March 30, 1940, p. 349-351

However, in the stop cock as described above, since the spindle protrudes from the valve box, in order to achieve good water stop and water flow operation and to harmonize with peripheral equipment, The installation posture was limited, and there was a problem that lacked versatility.

In view of the above problems, the present invention provides a valve body that opens and closes an inflow port at a front end of a cylindrical valve box provided with an inflow port and an outflow port at each end, and the rear end opens to the outflow port. A hollow portion is provided, and a piston provided with a water passage opening for communicating a flow path provided between the valve box and the front end side in the hollow portion is slidably fitted, and the piston is concentrically inserted in the valve box. The ring-shaped dial part protrudes outwardly from the annular groove formed by holding the opening end face of the front and rear divided body formed by dividing the valve box into front and rear parts . In an axial flow stopcock that is screwed into a wheel and the valve body can be moved forwards and backwards by forward and reverse rotation of the wheel , a pair of through holes in the outer circumferential surface of each of the front and rear divided bodies An annular outer groove with holes is engraved, and an annular inner groove is engraved on the outer peripheral surface of the wheel corresponding to the position of each outer groove. A semicircular arc stopper is attached to each outer concave groove, and a projecting piece provided at both ends of the stopper is slidably fitted into the inner concave groove through the through hole, thereby providing a spindle. Provide a stopcock that does not.

In short, the present invention provides a cylindrical valve box having an inflow port and an outflow port at each end, a valve body that opens and closes the inflow port at the front end, and a hollow portion whose rear end opens at the outflow port. Installed and slidably fitted with a piston provided with a water flow port for communicating a flow path provided between the valve box and the front end side in the hollow portion, and the piston is rotated concentrically in the valve box A ring-shaped dial part is formed on the roller wheel that protrudes outwardly from an annular groove that is freely arranged and that holds the opening end face of the front and rear divided body formed by dividing the valve box into front and rear parts. In the axial stop water faucet, in which the valve body can be moved forward and backward by forward and reverse rotation of the wheel , a pair of through holes are provided in the diameter direction on each of the outer peripheral surfaces of the front and rear divided bodies. An annular outer groove is engraved, and an annular inner groove is engraved on the outer peripheral surface of the wheel corresponding to the position of each outer groove. The grooves, together with mounting a semicircular stop, since the fitted slidably into the inner groove through a protrusion provided at both ends of該止Me tool into the through-hole, to forward the track roller The piston is moved forward by closing the inlet with the valve body to stop the water, and the piston is moved backward by reversing the wheel to separate the valve body from the inlet, and the valve box and the front end side of the piston from the inlet Between the primary side and the secondary side through the flow path, the communication port and the hollow portion provided between the primary side and the secondary side.
Therefore, according to the present invention, the rotating wheel exposed on the outer peripheral surface of the valve box can be rotated in the forward and reverse directions to open and close the valve, and the operation is easy. Since it does not protrude, it is not necessary to secure a large installation space as compared with the conventional case, and its installation posture is not limited, so that installation to the piping is simple.

An embodiment of the present invention will be described below with reference to the drawings.
1 and 2 are longitudinal sectional views of an axial flow stop cock, FIG. 1 shows a water stop state, and FIG. 2 shows a water flow state.
The stop cock is mainly composed of a valve box 1, a piston 2 that is slidably fitted in the valve box 1, and a wheel 3 that moves the piston 2 forward and backward from the outside of the valve box 1. .
The valve box 1 is formed in a substantially cylindrical shape, and includes an inlet 4 and an outlet 5 at each end thereof, and a valve seat 6 is provided at the periphery of the secondary side opening of the inlet 4. Yes.
The roller 3 is formed in a substantially cylindrical shape and is screwed into the piston 2, is concentrically arranged in the valve box 1, is rotatably arranged, and has a bowl shape from an annular groove 7 provided on the outer periphery of the valve box 1. The dial part 3a is projected outward.
For this reason, the valve box 1 is divided into front and rear sides on the inlet 4 side and the outlet 5 side, and an annular groove 7 is formed by keeping the opening end faces of the front and rear divided bodies 1a and 1b spaced apart. The bodies 1a and 1b are connected by a wheel 3.

Front and rear divided body 1a, the people each of the outer peripheral surface of the 1b split end side of the annular outer groove 8 of Article is engraved, the groove bottom of the outer groove 8, through the pair in the diameter direction The rear divided body 1b is formed with a small diameter so that the rear part 2a of the piston 2 can be slidably inserted, leaving the divided end side.
On the other hand, the roller 3 has an outer diameter corresponding to the enlarged diameter stepped portions 10 and 10a provided inside the divided end portions of the front and rear divided bodies 1a and 1b. An annular inner concave groove 11 corresponding to the position of each outer concave groove 8 is separately carved on the front and rear of the dial portion 3a formed in a bulged shape, and a female screw portion 12 is provided on the inner periphery of the roller 3. Yes.
Then, the piston 2 provided with the male thread portion 13 on the outer periphery of the intermediate portion is screwed into the wheel 3, and the dial portion 3 a of the wheel 3 is connected to the divided end portions of the front and rear divided bodies 1 a and 1 b constituting the annular groove 7. The rolling wheels 3 are arranged in the enlarged diameter stepped portions 10 and 10a of the front and rear divided bodies 1a and 1b so as to be interposed between the end faces of the opening, and each outer concave groove 8 has a substantially semicircular arc shaped stopper 14. (See FIGS. 3 and 4).
Protruding pieces 15 corresponding to the through holes 9 are provided at both ends of the stopper 14, and the protruding pieces 15 project through the through holes 9 on one circumference of the inner periphery of the valve box 1 to form the inner concave grooves of the rollers 3. The front and rear divided bodies 1a and 1b are integrally connected by the rolling wheel 3 to constitute the valve box 1 by being slidably inserted into the body 11 .
The piston 2 can be moved forward and backward within the valve box 1 by rotating the dial 3a exposed on the outer peripheral surface of the valve box 1 forward and backward.
Note that the surface of the dial portion 3a is provided with knurled eyes (not shown).

The piston 2 is formed in a substantially cylindrical shape in which a valve body 16 that opens and closes the inlet 4 by being attached to and detached from the valve seat 6 is provided at the front end, and a hollow portion 17 that is open to the outlet 5 is provided on the rear end side. Piston 2
A flow path provided between the valve box 1 and the side surface on the front end side of the piston 2 on one circumference of the side surface on the front end side of
A plurality of water inlets 19 for communicating 18 with the hollow part 17 are opened obliquely toward the outlet 5 with an acute angle with respect to the axis of the valve box 1.
The valve body 16 is formed in a spherical shape made of rubber, and the other hemispherical portion is attached to the front end opening of the piston 2 so that one hemispherical portion protrudes from the front end of the piston 2. A funnel shape having a diameter reduced from the secondary side to the primary side so as to correspond to the shape of the body 16 is formed.
In the piston 2, the portion between the male screw portion 13 and the water flow port 19 is formed to bulge in an annular shape, and this bulging portion 20 is formed in front of the enlarged diameter step portion 10 in the front divided body 1 a and a step portion 21 having a smaller diameter than this. It is slidably inserted in.
When the front end surface of the bulging portion 20 comes into contact with the front end surface of the stepped portion 21, the valve body 16 is set so as to be seated on the valve seat 6 and closed.
Although not shown, the valve body 16 may be set to be seated on the valve seat 6 before the front end surface of the bulging portion 20 contacts the front end surface of the stepped portion 21.
In the piston 2, an O-ring 23 is provided around each of the bulging portion 20 and the rear portion 2a that are always in sliding contact with the step portion 21 and the small-diameter portion 22 of the rear divided body 1b. The internal space of the valve box 1 connected at 3 is partitioned in an airtight manner to prevent water leakage from the valve box 1.
A joint member 24 for connecting the pipes is provided at the inlet 4 and the outlet 5 of the valve box 1.

The valve body 16 is not limited to the above spherical shape. For example, as shown in FIGS. 5 and 6, the valve body 16 is formed in a needle shape protruding at the center of the closed end surface of the piston 2 front end, or although not shown, It may be of a disk shape arranged flush with the closed end face. In any case, the inlet 4 and the valve seat 6 are formed in a shape corresponding to the valve body 16.

Next, the operation of the axial flow stop cock according to the present invention will be described.
By rotating the dial portion 3a of the wheel 3 exposed on the outer periphery of the valve box 1 forward and backward, the piston 2 screwed into the wheel 3 is moved forward and backward.
That is, when the dial portion 3a is rotated forward, the piston 2 moves forward toward the inlet 4, and the front end surface of the bulging portion 20 of the piston 2 comes into contact with the step portion 21, so that the valve body 16 is brought into contact with the valve seat 6. Water is stopped to sit and close the valve.
When the dial portion 3a is reversed, the piston 2 is retracted, the valve body 16 is detached from the valve seat 6, the inlet 4 is opened, and the inlet 4 is connected to the flow path 18, the water inlet 19, and the hollow portion 17. Then, water is passed to communicate with the outlet 5.
If the valve body 16 is spherical, the fluid flowing from the inlet 4 flows along the spherical surface of the valve body 16.
Since it flows to 18, the flow is smooth and there is little pressure loss.
Further, the needle-type valve body 16 is suitable for passing water with a small flow rate.

It is a longitudinal cross-sectional view which shows the water stop state of an axial flow water stop cock. It is a longitudinal cross-sectional view which shows a water flow state same as the above. It is a partially broken side view of the valve box which shows the connection state of the front-back division body and a wheel. It is AA sectional drawing of FIG. It is a longitudinal cross-sectional view which is a modification of an axial flow water stop cock, and shows a water stop state. It is a longitudinal cross-sectional view which shows a water flow state same as the above.

Explanation of symbols

1 Valve box 2 Piston 3 Rolling wheel
3a Dial part 4 Inlet 5 Outlet 7 Annular groove
16 Disc
17 Hollow part
18 flow path
19 Water outlet

Claims (1)

A cylindrical valve box having an inflow port and an outflow port at each end is provided with a valve body that opens and closes the inflow port at the front end, and a hollow portion whose rear end is open to the outflow port. A piston provided with a water passage for communicating a flow path provided between the valve box and the front end side is slidably inserted, and the piston is concentrically arranged in the valve box and is rotatably disposed. In addition , a flange-like dial portion is screwed into an outwardly protruding roller wheel from an annular groove formed by holding the opening end face of the front and rear divided body formed by dividing the valve box into front and rear portions , and the wheel In the axial stop water faucet in which the valve body can be moved forwards and backwards by forward and reverse rotation, an annular outer concave groove having a pair of through holes in the diameter direction on each of the outer peripheral surfaces of the front and rear divided bodies An annular inner groove is engraved on the outer peripheral surface of the wheel corresponding to the position of each outer groove, and a semicircular arc shape is formed in each outer groove. While wearing a fit tool, axial stop cock, characterized in that fitted slidably inside the groove through a protrusion provided at both ends of該止Me tool in the through hole.

Images