JP4167791B2 - Stop cock with strainer with flow adjustment function - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a water stop cock incorporating a strainer to which a flow rate adjusting function is added .
[0002]
[Prior art]
A stop cock with a built-in strainer (hereinafter referred to as a stop cock with a strainer) is provided, for example, in the middle of a water supply pipe to a water storage tank of a flush toilet. It has been adopted.
[0003]
In FIG. 6, reference numeral 41 in the figure is a plug body provided with pipe portions 42 and 43 for water supply and water discharge, 44 is a cylindrical strainer incorporated in the plug body 41, and 45 is screwed to the plug body 41. The strainer cap is formed with an annular recess 46 for holding the strainer 44 and an insertion groove 47 for a disk tool for external operation (generally coins are used).
[0004]
48 is a valve mechanism for adjusting the flow rate including water stop, and a valve seat 49 having a flow path concentric with the axis of the cap 45 is formed on the upstream side of the strainer built-in portion with respect to the plug body 41. A female thread portion 50 concentric with the axis of the cap 45 is formed between the valve seat 49 and the cap 45, and a valve seat flow path is formed on one end side of the plug rod 51 screwed to the female thread portion 50. While holding the flow regulating valve body 52 that can be closed from the downstream side, the other end side of the plug bar 51 is inserted into a hole 54 at the center of the cap through a water sealing means 53 by an O-ring, The insertion groove 55 for a tool such as a screwdriver is formed on the surface of the other end side of the plug bar 51 so that the flow rate adjustment including
[0005]
A check valve mechanism 56 is a valve seat 57 formed on the downstream side of the strainer built-in portion, a valve body 58 capable of closing the flow path of the valve seat 57 from the downstream side, and a valve rod 59 of the valve body 58. The slidable cap 60 and the spring 61 that urges the valve body 57 in the closing direction.
[0006]
[Problems to be solved by the invention]
In the stop cock with a strainer having the above-described configuration, when replacing or cleaning the strainer 44, a coin-shaped disk tool and a tool such as a screwdriver are prepared, and the stopper bar 51 is first tightened. The flow path of the valve seat 49 is closed by the valve body 52, and then the strainer cap 45 is removed and the strainer 44 is pulled out. However, the operation of closing the valve seat 49 by the valve body 52 is often forgotten. Since the water pressure is strong at this time, it is almost impossible to return the cap 45 to the base unless the main stopper is closed, and the clothes get wet or the surroundings are immersed in water. was there.
[0007]
Further, when the cleaning of the strainer 44 and the like were finished and the cap 45 was returned to the original position, the plug rod 51 was naturally operated to open the valve seat channel for water flow. .
[0008]
The present invention has been made in view of such circumstances, and its purpose is to eliminate the need for a capping operation when the strainer is taken out. Further, the present invention is to provide a water stop cock with a strainer to which a flow rate adjustment function suitable for handling in which the operation of opening the plug when the strainer is returned to an original state is unnecessary is added .
[0009]
[Means for Solving the Problems]
A water stop cock with a strainer to which a flow rate adjusting function according to the present invention is added includes a valve body, a slide valve body that plugs a valve seat flow path from an upstream side by a biasing force of a spring, on a plug body having a water outlet pipe portion. The cylindrical strainer is concentric with the center of the valve seat flow path in the middle of the flow path leading to the water outlet of the water outlet pipe section so as to communicate with the valve seat flow path on the downstream side of the valve seat of the stopper body. Furthermore, a cap for moving the strainer in the axial direction by an external operation and bringing the cylindrical end of the strainer into contact with the valve seat or the plug body portion around the valve seat is provided via a water sealing means. As the cap is reciprocated in the water-sealed state, the slide valve body is moved upstream against the biasing force of the spring during the forward movement, and the valve seat flow by the biasing force of the spring at the time of backward movement and unplugging the road Serial slide valve element is moved to the downstream side, the valve seat flow path is configured so as to plugging,
Further, a screw member is screwed into the central portion of the cap so as to be externally operable through a water sealing means in a state where the cap is penetrated, and in the plug body inside of the screw member in the open state. The present invention is characterized in that a flow rate adjusting portion for adjusting the flow rate of the flow path leading to the water discharge port of the water outlet pipe portion is provided outside so as not to come out .
[0010]
According to the above characteristic configuration, when the strainer is removed as necessary, when the strainer cap is removed from the plug body, the valve body is automatically closed by the biasing force of the spring in the cap water-sealed state before the removal is completed. Therefore, it is possible to surely prevent a water immersion accident caused by forgetting to close the plug as in the prior art.
[0011]
In addition, since the valve body is automatically opened along with the screwing of the cap to the plug body when the strainer is returned to the original, the water stop cock with the strainer according to the present invention prevents accidents such as flooding. In addition, it is not necessary to perform plugging for stopping water and opening for passing water.
[0012]
[0013]
[0014]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings. 1 to 4 show a reference example. FIG. 5 shows a water stop cock with a strainer to which a flow rate adjusting function is added according to an embodiment of the present invention.
FIG. 1 is a cross-sectional view showing a stop cock with strainer 1 that does not have a flow rate adjusting function, and FIG. 2 is a cross-sectional view of the stop cock 1 showing a state in which the strainer is taken out.
[0015]
In these figures, 2 in the figure is a plug body, which has a water introduction pipe part 4 in which a male thread part 3 is formed and a cap mounting pipe part 6 in which a female thread part 5 is formed in a concentric shape, In the middle of both pipe parts 4 and 6, a water outlet pipe part 8 having a male thread part 7 is continuously provided in a state where the flow path center is orthogonal to the flow path center of the water introduction pipe part 4.
[0016]
A straight pipe portion 9 having a diameter larger than the valley diameter of the female screw portion 5 is formed on the inner surface of the end portion side of the cap mounting pipe portion 6, and water is introduced upstream of the continuous portion of the water outlet pipe portion 7. In order to form two step portions a and b on the inner surface of the pipe portion 4, a pipe portion 11 having a smaller diameter than the valve body built-in pipe portion 10 is located upstream and more than the valve body built-in pipe portion 10. Large-diameter pipe portions 12 are respectively formed on the downstream side, and a female screw portion 13 is formed on the downstream side portion of the large-diameter pipe portion 12.
[0017]
14 is a valve seat provided with an O-ring c for water stop, 15 is a slide valve body (hereinafter simply referred to as a valve body) for closing the valve seat flow path i from the upstream side, and abuts against the valve seat of the valve seat 14. An O-ring d is provided. A spring 16 biases the valve body 15 toward the valve seat 14, and the spring 16 and the valve body 15 are arranged in this order so that the spring 16 is positioned between the stepped portion a and the valve body 14. Then, the valve body 15 is screwed into the female screw portion 13 so that the upstream end portion thereof is brought into contact with the step portion b.
[0018]
Reference numeral 17 denotes a cylindrical strainer, which is made of a metal having a large number of small holes e (stainless stainless steel is preferable, but the material is not limited and the same applies hereinafter), and the cylindrical body 18. A strainer main body 20 is formed by the surrounding metal cylindrical mesh 19, a metal ring 21 is provided on one end side (the valve seat 13 side) of the strainer main body 20, and the other end of the strainer main body 20 is provided. On the side, a synthetic resin ring 22 having an annular protrusion f bulged on the outer peripheral surface portion is provided.
[0019]
This strainer 17 is concentric with the flow path center of the valve seat 14 in the middle of the flow path j that reaches the water outlet of the water outlet pipe portion 8 so as to communicate with the valve seat flow path i on the downstream side of the valve seat 14. Built in.
[0020]
Reference numeral 23 denotes a strainer cap for holding a male screw part 24 screwed into the female screw part 5 of the cap mounting pipe part 6 and a water sealing means (for example, an O-ring) 25 for the straight pipe part 8 of the cap mounting pipe part 6. An annular recess 26, a fitting holding recess 27 of the cylindrical strainer 17, and an insertion groove 28 for a disk tool for external operation are formed.
[0021]
When the strainer 17 is built in the plug body 2, the end ring 22 of the strainer 17 is press-fitted into the recess 27 of the strainer cap 23 with the annular protrusion f elastically deformed, and the strainer 17 and the cap 23 are integrated. Then, the strainer 17 is inserted into the cap mounting tube portion 6, and the cap 23 is screwed to the male screw portion 5 .
[0022]
Therefore, the strainer 17 moves integrally with the reciprocating movement of the cap 23 in the axial direction, and the metal ring 21 on one end side moves around the valve seat 14 by the forward movement of the cap 23 in the tightening direction. It is configured to abut against the plug body portion 2A (the valve seat 14 may be a contact object).
[0023]
Then, a protruding member 30 that protrudes downstream of the valve seat 14 and bends toward the ring 21 is connected to the valve body 15, and a locking member that locks the bent portion h of the protruding member 30 from the downstream side. 31 is connected to the metal ring 21 of the strainer 17, and the valve body 15 can be opened and closed with the reciprocating movement of the cap 23 by the bent portion h, the locking member 31 and the spring 16.
[0024]
In the stop cock with strainer 1 having the above-described configuration, the cap mounting tube portion 6 is sealed with respect to the cap mounting tube portion 6 by the water sealing means 25 in the closed state of the valve seat flow path by the valve body 15. The water sealing stroke L of the water sealing means 25 is set to be larger than the opening / closing stroke L1 of the valve seat flow path by the valve body 15. Therefore, the strainer 17 is replaced with the plug body 2 by replacing or cleaning the strainer 17. When the coin-shaped disk tool is inserted into the groove 28 when taking out outside and the cap 23 is moved backward in the direction opposite to the tightening direction, the locking position of the locking member 31 with respect to the bent portion h is the downstream side. And the flow path of the valve seat 14 is automatically closed by the valve body 15 by the urging force of the spring 16 before the strainer cap 23 is completely removed, that is, in a cap-sealed state. It becomes door.
[0025]
On the other hand, when the cap 23 holding the strainer 17 integrally is screwed to the cap mounting tube portion 6, the locking member 31 connected to the ring 21 of the strainer 17 is connected with the forward movement of the cap 23 in the tightening direction. The valve body 15 slides upstream against the urging force of the spring 16 as the cap 23 further moves forward, and the flow path of the valve seat 14 opens. Finally, the ring 21 of the strainer 17 is seated on the plug body portion 2A.
[0026]
In summary, as the strainer 17 is removed from the plug body 2, the valve seat flow path is automatically closed before the removal is completed, and as the strainer 17 is attached to the plug body 2, the valve seat flow path is opened. a of being stoppered, as compared with the conventional strainer with stopcock, unforeseen a waterlogged accident prevention, as well as the work of unplugging for plugging and passing water for the water stop is Ri unnecessary and Do no , suitable strainer with stopcock 1 in handling surface Ri taken is provided.
[0027]
Further, the stop cock with strainer 1 shown in FIG. 3 includes a protruding member 32 that is connected to the valve body 15 and contacts the cap 23 . The strainer-equipped stop cock 1 shown in FIG. 4 includes a pressing member 33 that is connected to the cap 23 and engages with the valve body 15 .
[0028]
Figure 5 is a flow rate adjusting function strainer with stop cock 1 by adding a 'according to an embodiment of the present invention shows. In FIG. 5, the same reference numerals as those shown in FIGS. 1 to 4 are the same or equivalent.
This stop cock 1 ' uses a stop cock with a strainer having the configuration shown in FIG. 1, and a water sealing means by, for example, an O-ring in a state in which the cap 23 passes through the center of the cap 23. with screwing the screw member 35 through the 34, the plug body 2 inside the one end side of the screw member 35, provided so as not to escape the flow amount adjustment unit 37 to the outside, and, on the other end of the screw member 35 A screw insertion groove 38 for a tool such as a screwdriver for externally operating the screw member 35 is formed.
[0029]
In the stop cock 1 ' with a strainer to which the flow rate adjusting function having the above configuration is added , the protruding member 32 and the pressing member shown in FIGS. 3 and 4 instead of the bent portion h and the locking member 31 shown in FIGS. 33 Ru can be equipped der respectively. In this case, in FIG. 3, the protruding member 32 of the continuously arranged in the valve body 15 so as to abut against the flow rate adjustment part 3 7, in FIG. 4, a flow rate adjusting portion pressing member 33 for locking the valve body 15 It shall be connected to 37.
[0030]
【The invention's effect】
As described above, according to the present invention, as well the soggy accident prevention, work unplugging for plugging and water flow for waterproofing is not required at all, features of the preferred flow rate adjustment handling surface A water stop cock with a strainer to which is added is provided.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view of a water stop cock with a strainer shown as a reference example .
2 is a cross-sectional view of the strainer with stop cock showing the extraction state of the strainer.
FIG. 3 is a cross-sectional view of a water stop cock with a strainer shown as another reference example .
FIG. 4 is a cross-sectional view of a water stop cock with a strainer shown as still another reference example .
FIG. 5 is a cross-sectional view of a water stop cock with a strainer to which a flow rate adjusting function is added according to an embodiment of the present invention .
FIG. 6 is a cross-sectional view of a water stop cock with a strainer of a conventional example.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 '... Water stop cock with a strainer which added the flow control function, 2 ... Plug body, 14 ... Valve seat, 15 ... Slide valve body, 16 ... Spring, 17 ... Strainer, 23 ... Cap, 25, 34 ... Water sealing means , 3 0,32 ... projecting member, 31 ... engaging member, 35 ... screw member, 3 7 ... flow rate adjustment section, i ... valve seat passage, the flow path to the j ... spout.

Claims (1)

The plug body provided with the water outlet pipe portion incorporates a valve seat and a slide valve body for closing the valve seat flow path from the upstream side by the biasing force of the spring, and at the downstream side of the valve body and the valve seat. A cylindrical strainer is built in the middle of the flow path of the water outlet pipe section so as to communicate with the flow path, concentrically with the flow path center of the valve seat, and this strainer is axially operated by an external operation. Move the cap so that the cylindrical end of the strainer contacts the valve seat or the plug body around the valve seat, and screw it onto the plug body via the water sealing means. with the reciprocation, to move to the upstream side against the slide valve body during the forward scan the biasing force of the spring, the slide by the biasing force of the spring at the time of backward movement by unplugging the valve seat passage valve element is moved to the downstream side, by plugging the valve seat passage Is configured,
Further, a screw member is screwed into the central portion of the cap so as to be externally operable through a water sealing means in a state where the cap is penetrated, and in the plug body inside of the screw member in the open state. A water stop cock with a strainer to which a flow rate adjusting function is added , characterized in that a flow rate adjusting unit for adjusting the flow rate of the flow path leading to the water discharge port of the water outlet pipe portion is provided outside .

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