JPH06129552A - Trainer-equipped water top cock with check valve in single piece structure - Google Patents

Abstract

PURPOSE:To simplify the shape of a fluid path and the structure of the body of a mixed water cock, allow its connection with a constant quantity water stop cock, etc., to serve both for right hand use and lefthand use, and eliminate necessity for blocking the main tap, etc., at the time of cleaning and maintenance works. CONSTITUTION:A influx port 23 and an outflow port 24 are opened at the peripheral surface of a holder body 22, and a check valve 27 is installed in the holder body 22 in its position between the two ports 23, 24, and a strainer 25 is furnished at the influx port 23. At the foremost of this holder body 22, a water stop valve element 31 is fitted slidably in the axial direction and unrotatably.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention is
The present invention relates to a technique for integrally incorporating a water shutoff valve, a check valve, and a strainer on the same shaft in a hot and cold water mixing faucet or the like in which a water shutoff valve, a check valve, and a strainer are arranged. .

[0002]

2. Description of the Related Art For example, in a hot and cold water mixing faucet or the like, a water shutoff valve and a check valve are provided on the upstream side of respective flow paths of hot water and water leading to a hot water and water mixing chamber in a faucet body. , And a strainer. The strainer is for removing dust such as red rust contained in hot water and water, and the check valve prevents the hot water from flowing back into the water supply source such as water supply or the hot water supply source. It is for doing. Further, the water shutoff valve is for closing the upstream side of the faucet body to enable maintenance inside the faucet body.

As shown in FIG. 5, the water shutoff valve, the check valve, and the strainer in the conventional hot and cold water mixing faucet are as follows.
The type that these three are integrated together,
As shown in FIGS. 6 and 7, a strainer with a check valve,
There is a type in which the water shutoff valve is formed separately.

In the prior art shown in FIG. 5, the flow path 1 is bent in a crank shape, and a strainer 3 and a valve body 2 serving as both a water shutoff valve and a check valve are formed at one portion of the bent portion. It is incorporated as one. To explain this in more detail, first, a holder 7 having an inflow port 4, a valve seat 5 and an outflow port 6 is screwed to the bent portion of the flow path 1. And
A strainer 3 is fitted on the outer peripheral surface of the holder 7 so as to cover the outlet 6. On the other hand, on the other end side of the holder 7, an adjusting screw 9 having a valve body 2 slidable in the axial direction via a spring 8 is screwed. Further, the plug body 10 for closing these mounting holes is screwed to the flow path body. The strainer 3 is integrally attached to the inner peripheral surface of the collar portion of the plug body 10 with an adhesive or the like.

In a normal use state, the valve body 2 is seated on the valve seat portion 5 by the biasing force of the spring 8. When the pressure on the downstream side of the flow path 1 decreases by opening the faucet or the like, the valve body 2 moves upward in FIG. 5 and opens the inflow port 4. As a result, the hot water flows into the holder 4, passes through the outlet 6 and the strainer 3, flows to the secondary side, and is discharged from the water outlet. When the pressure on the secondary side becomes high for some reason, the valve body 2 is seated on the valve seat portion 5 to prevent backflow. Further, when the adjusting screw 9 is further screwed to forcefully seat the valve body 2 on the valve seat portion 5, it serves as a water stopcock.

The prior art shown in FIGS. 6 and 7 is a mixing faucet 13 in which only the handle 12 is projected on the upper edge surface 11 of the bathtub and the other portions are embedded. The mixed water faucet 13 has an outflow side connected to the fixed quantity water stopcock 14, and a water discharge pipe 15 further connected to the downstream side of the fixed quantity waterstopper 14. In this mixing faucet 13, a water stopcock 16 and a check valve 17 with a strainer are separately incorporated. This is the same for both the hot water channel and the water channel.

Hot water or hot water supplied from a water source is
First pass through the stopcock 16 and then the check valve and strainer 1
7 and flows into the mixing chamber 18 side. Then, the hot water and the water are mixed to become warm water of an appropriate temperature, and the hot water is turned to the back side of the mixed water faucet 13, flows from the bypass pipe 19 into the quantitative water stopcock 14, and is discharged through the water discharge pipe 15.

[0008]

However, in the prior art shown in FIG. 5, the red rust and the other debris from the hot water flowing in from the inflow port 4 are filtered by the strainer 3 and collected in the holder 7. There is a problem that the normal valve operation of the body 2 is disturbed. Even if the strainer 3 is pulled out by loosening the plug 10 and the dust inside the holder 7 is removed, the inner peripheral surface side of the strainer 3 is pulled out by sliding contact with the outer peripheral surface of the holder 7. The attached dust was scraped off into the holder 7, and on the contrary, a lot of dust was to be generated.

Further, the entire holder 7 is pulled out, and the valve body 2
In the case of maintenance such as, it is necessary to close the main plug, and it has not been possible to fulfill the role of a water stopcock. Further, this conventional technique has a drawback in that the flow passage 1 itself has many crank portions, which causes pressure loss.

On the other hand, in the prior art shown in FIGS. 6 and 7, since the check valve with a strainer 17 and the water stopcock 16 are separate bodies, the flow path is complicated and the pressure loss occurs in this case as well. As the size of the mixing faucet 13 increases, the width of the main body of the mixing faucet 13 in the front-rear direction (vertical direction in FIG. 6) increases, resulting in an increase in size.

Further, in this prior art, since the check valve with a strainer 17 and the water stopcock 16 must be attached at different positions, the fixed waterstop 1 is attached to the main body of the mixed water tap 13.
The flow path for connection to No. 4 cannot be formed, and the connection is made via the bypass pipe 19 offset on the back side thereof. Therefore, the fixed water stopcock 14 and the water discharge pipe 1
The connection position of the bypass pipe 19 differs depending on whether 5 is arranged on the right side or the left side of the mixed faucet 13, and it was necessary to separately prepare the right and left ones. .

[0012]

SUMMARY OF THE INVENTION The present invention has been made by improving the prior art in view of the above-mentioned problems, and the shape of the flow path and the main body of the mixing faucet can be simplified and the connection with a fixed-quantity stopcock or the like can be achieved. Provides a stopcock with a check valve integrated strainer that can be a mixed faucet for both right and left use.

Therefore, the means adopted by the present invention to solve the above-mentioned problems is to provide a holder in which a water shutoff valve, a check valve and a strainer are arranged in the middle of the flow path of hot water or water. Open the inflow port and the outflow port on the peripheral surface of the main body, arrange a check valve in the holder main body between the inflow port and the outflow port, provide a strainer at the inflow port, and install a shaft on the tip side of the holder main body. A water stopcock with a check valve integrated strainer, wherein a water stop valve body is fitted and mounted so as to be slidable in a direction and non-rotatable.

[0014]

According to the present invention, the water stop valve is incorporated at the upstream end of the holder body having the inflow port and the outflow port, and the check valve is integrally incorporated in the holder body, and the strainer is provided at the inflow port. It is attached to the holder body around. Since these water shut-off valve, check valve and strainer are integrated together, the flow path of the hot and cold water mixing faucet body can be simplified, and compared with the case where they are installed separately, The depth dimension can be reduced. Further, by rotating the holder body, the water shutoff valve can be seated on the valve seat of the flow path body. In that state, the holder main body can be pulled out from the flow path main body, and it is not necessary to close the main plug when performing maintenance of the valve body.

[0015]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The structure of the present invention will be described below with reference to the embodiments shown in the drawings. The same reference numerals as in the conventional case are the same members. 1 to 3 relate to an embodiment of the present invention, and FIG. 1 is a partial vertical cross-sectional view of a hot and cold water mixing faucet 21 using the entire stopcock 20 with a check valve integrated strainer, FIG. 3 is an exploded perspective view of the water stopcock 20, FIG. 3 is a partial vertical cross-sectional view showing an entire hot and cold water mixing faucet 21 using the water stopcock 20, and FIG. 4 is a plan view thereof. As shown in FIGS. 1 and 2, a check valve integrated strainer with a strainer 2
0 is an inflow port 23 on the peripheral side surface of the cylindrical holder body 22.
And an outlet 24 are provided along the axial direction. A strainer 25 is externally mounted on the outer peripheral surface side of the inflow port 23.

Then, in the holder body 22 between the inflow port 23 and the outflow port 24, a check valve 2 is provided via a cover 26.
7 is attached. The cover 26 connects the inner cylinder and the outer cylinder with a connecting member such as a cross shape, the valve shaft of the check valve 27 is slidably mounted in the inner cylinder, and the outer cylinder is the holder body. It is fitted in the inside of 22. 28 is a spring for urging the check valve 27, and 29 is a valve seat provided in the holder body 22.

Further, a square hole 30 such as a hexagon is formed on the tip side of the holder body 22, and a valve shaft head 32 of a water shutoff valve body 31 is slidable in the axial direction in the square hole 30. Fitted and installed. Further, an adjusting spindle 33 is integrally attached and fixed to the upper end side of the holder main body 22 with an adhesive provided on a screw portion to prevent the cover 26 of the check valve 27 from coming off. A stopper 35 that is screwed to a main body 34 of the hot and cold water mixing faucet 21 is externally fitted and attached to a cylinder shaft portion of the adjusting spindle 33, and is prevented from coming off by a retaining ring 36.

As shown in FIG. 3, the stopcock with check valve integrated strainer 20 having the above-described structure has the stop valve body 3 as shown in FIG.
The screw portion 37 on the tip side of the valve shaft 0 of 0 is screwed to a part of the main body 34 of the hot and cold water mixing faucet 21. Then, the stopper 35 is screwed onto the faucet body 34 of the hot and cold water mixing faucet 21. In this state, when the head of the adjusting spindle 33 is rotated by a tool such as a screwdriver, the rotational force is transmitted to the water shutoff valve body 31 on the tip end side via the holder body 22. Stop valve body 31
For the holder body 22, the square hole 30 and the valve shaft head 3
It is slidable in the axial direction by fitting with 2, and the faucet body 3
It is possible to adjust the clearance between the valve seat 38 (see FIG. 1) formed in FIG. Temporarily, the water shut-off valve body 31 is attached to the valve seat 3
When seated at No. 8, it is in a water-stopped state.

As is apparent from FIGS. 3 and 4, this check valve-integrated strainer-equipped water stopper 20 has cartridge-type components each having three functions in one holder body 22. Therefore, since the three members are arranged on the same axis, the width dimension in the front-rear direction can be remarkably reduced in the state of being attached to the hot and cold water mixing faucet 31. Therefore, when this water stopcock 20 is used, it is possible to integrally form the flow path 40 on the back side of the water faucet body 34, and a bypass pipe is not required unlike the conventional case.

In normal use, hot water and water reach the strainer 25 through the gap formed between the water shut-off valve body 31 and the valve seat 38, and reach the strainer 25 and the inflow port 23 inside the holder body 22. Flow into. And the check valve 27
Pushes up against the urging force of the spring 28,
4 flows into the mixing chamber 39 of the hot and cold water mixing faucet 31, and the hot water and the water are mixed to become appropriate hot water. As shown in FIGS. 3 and 4, the mixing chamber 39 has an outflow connection port 41 formed at both ends of the faucet body 34 via flow paths 40, 40 formed at the back side of the faucet body 34. , 41. In this case, the outflow connection port 41 on the right side is closed. The warm water that has flowed into the mixing chamber 39 flows through the flow path 40 to the fixed-quantity stopcock 14 and is discharged from the water discharge pipe 15.

Next, the case where the check valve 27 and the strainer 25 are cleaned and maintained will be described. In this case, first, the head of the adjusting spindle 33 is rotated with a tool from the normal use state, and the water shutoff valve body 31 is rotated via the holder body 22. As a result, the screw portion 37 of the water shutoff valve body 31 is screwed forward with respect to the female screw portion of the water faucet body 34, and eventually the water shutoff valve body 31 is seated on the valve seat 38. Will be blocked. That is, a water-stop state can be obtained.

After that, the stopper 35 is rotated through the pull tab 42, and the stopper 35 is unscrewed from the faucet body 34. When the pull tab 42 is pulled up in this state, the recess on the upper end surface of the plug body 35 causes the retaining ring 36 of the adjusting spindle 33 to move.
The adjustment spindle 33 and the holder body 22 are integrally extracted together with the stopper 35. The water stop valve body 31 remains screwed to the faucet body 34. Therefore, it is not necessary to separately close the main plug or the like. Of course, the holder main body 22 incorporates the check valve 27 and the strainer 25, and after taking them out from the faucet main body 34, they can be cleaned and maintained.

After the check valve 27 and the strainer 25 are cleaned and maintained, the holder body 22 and the adjusting spindle 33 are pushed into the mounting holes of the faucet body 34, and the square holes 30 of the holder body 22 are closed. 31 valve stem head 32
To fit. Then, the stopper 35 is screwed to the faucet body 34, and finally the adjusting spindle 33 is rotated to rotate the water shutoff valve 3
1 may be separated from the valve seat 38 to open the flow path. As a result, the normal use state is achieved.

[0024]

As described above, according to the present invention,
Since a water stop valve body is incorporated at the upstream end of the holder body having an inlet and an outlet, and a check valve is integrally incorporated in the holder body, and a strainer is attached to the outer peripheral surface of the inlet, These water shut-off valve body, check valve and strainer can be made into one cartridge. Therefore, there is no need to provide a crank part in the flow path of the hot and cold water mixing faucet body, and it can be simplified, so there is little pressure loss,
Excellent discharge force.

Moreover, as compared with the case where the water shut-off valve body, the check valve, and the strainer are separately provided side by side, the depth dimension of the main body of the hot and cold water mixing faucet can be made smaller and the size can be made compact because of the uniaxial structure. Is. Therefore, it is possible to form an outlet for connection with a fixed-quantity stopcock or the like on the left and right sides of the hot and cold water mixing faucet body, and one faucet body can be used for both right and left.

Further, by rotating the holder main body, the water shut-off valve body can be seated on the valve seat of the flow passage main body, and in that state, the holder main body is pulled out from the flow passage main body for maintenance of the check valve and the strainer. This is convenient because there is no need to separately close the main plug as in the conventional case.

Further, since the strainer is arranged on the upstream side of the check valve, dust or the like is not caught in the drive portion of the check valve, and the reliable operation can be guaranteed.

[Brief description of drawings]

FIG. 1 is a partial vertical cross-sectional view of a hot and cold water mixing faucet in which a check valve integrated strainer with a check valve according to the present invention is incorporated.

FIG. 2 is an exploded perspective view of a water stopcock with a check valve integrated strainer according to the present invention.

FIG. 3 is a partial vertical cross-sectional view showing the whole of a hot and cold water mixing faucet to which the water stopcock with a check valve integrated strainer according to the present invention is applied.

FIG. 4 is a plan view of a hot and cold water mixing faucet to which a water stopcock with a check valve integrated strainer according to the present invention is applied.

FIG. 5 is a vertical cross-sectional view of a conventional stopcock with a check valve integrated strainer.

FIG. 6 is a plan view of a hot and cold water mixing faucet in which a conventional check valve with a strainer and a water stopcock are separately installed.

FIG. 7 is a partial vertical cross-sectional view of a hot and cold water mixing faucet in which a conventional check valve with a strainer and a water stopcock are separately installed.

[Explanation of symbols]

20 ... Stopcock with check valve integrated strainer 21 ... Hot and cold water mixing faucet 22 ... Holder body 23 ... Inflow port 24 ... Outflow port 25 ... Strainer 27 ... Check valve 28 ... Spring 29 ... Valve seat 30 ... Square hole 31 … Water stop valve 33… Adjustment spindle 35… Stopper

Claims (1)

[Claims] 1. A water valve having a water shutoff valve, a check valve, and a strainer in the middle of a hot water or water flow path. A check valve is provided in the holder body between the outlet and the outlet, and a strainer is provided at the inlet, and the water shut-off valve body is fitted on the tip side of the holder body so as to be axially slidable and non-rotatable. A stopcock with a check valve integrated strainer that is equipped.