JP3035412U - Water pipe cleaning valve - Google Patents

Abstract

(57) 【Abstract】 PROBLEM TO BE SOLVED: To provide a reliable connection between a water pipe and a valve body, to enhance airtightness of a connection portion, to prevent leakage of water reliably, and to prevent mud and sand from entering the inside of a water pipe. It is an object of the present invention to provide a valve for cleaning a water pipe that can reliably discharge water. SOLUTION: This valve is connected to a water pipe having a connection flange formed with a bolt hole at a periphery of a connection port, and a base of an insertion pipe section communicating with a water discharge port through a valve body is provided at the base. A joining flange to be joined to the connecting flange of the pipe is provided around the fitting flange, and a bolt insertion hole corresponding to the bolt hole and a bolt screwing hole are provided in the joining flange. In a water pipe cleaning valve in which a bolt whose tip is in contact with a connection port edge of the water pipe is screwed into the screw hole, an inner peripheral surface of the connection port portion of the water pipe and an outer peripheral surface of the insertion pipe portion are provided. , A rubber ring for sealing, a ring for cushioning, and a ring for fixing are interposed.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a water pipe cleaning valve for discharging mud and sand that have penetrated into a water pipe when the water pipe is laid.

[0002]

[Prior art]

 Conventionally, when laying water pipes, mud and sand enter the water pipes when connecting the water pipes, and the invaded mud and sand are discharged from the water taps of ordinary households that communicate with the laid water pipes. ing. Therefore, conventionally, a valve for cleaning a water pipe, which is designed to discharge mud and sand that has entered the inside of the water pipe without discharging it from the water tap of a general household, has been disclosed in, for example, Jikho Sho 55-. It is proposed as in Japanese Patent No. 31351.

[0003]

[Problems to be solved by the device]

 However, in the case of the above-mentioned conventional technology, the connection between the water pipe and the valve was made by simply inserting the valve insertion pipe part into the connection opening part of the water pipe, which made the connection uncertain and the intended purpose. There was a problem that it could not be fulfilled sufficiently.

[0004]

[Means for Solving the Problems]

 The present invention is intended to solve the above problems, and is a valve connected to a water pipe having a connection flange with a bolt hole at the periphery of the connection port, which communicates through the water discharge port and the valve body. At the base of the insertion pipe part, there is provided a joint flange to be joined with the connection flange of the water pipe, and a bolt insertion hole corresponding to the bolt hole is formed in the joint flange and a bolt screw hole is also provided. A valve for cleaning a water pipe, in which a bolt that is abutted to the edge of the connection port of the water pipe is screwed into this port screw hole, It is characterized in that a rubber ring for sealing, a cushioning ring body, and a fixing ring body are interposed in a gap between the inner peripheral surface of the portion and the outer peripheral surface of the insertion pipe portion.

Further, a ring-shaped liner body is interposed in a gap between the inner peripheral surface of the connection port portion of the water pipe and the front end surface of the insertion pipe portion.

[0006]

[Embodiment of the invention]

 Hereinafter, an embodiment of the present invention will be described in detail with reference to FIGS. FIG. 1 is a front view of a connection flange for attaching to a water pipe in which the connection flange is not formed, and FIG. 2 is a view of connecting the cleaning valve of the water pipe according to the present invention to the female connection port of the water pipe. FIG. 3 is a front view of a valve for cleaning a water pipe shown in FIG. 2, FIG. 4 is a front view of a rubber ring for sealing in the present invention, and FIG. 5 is a notched side surface of the same portion. Fig. 6, Fig. 6 is a front view of a buffer ring body (backup ring), Fig. 7 is a cutaway side view of the same portion, Fig. 8 is a front view of a fixing ring body (lock ring), and Fig. 9 is a cutaway side view of the same portion. FIG. 10 is a partially enlarged plan view showing a divided portion of the fixing ring body, FIG. 11 is a front view of a squeezing device for the fixing ring body, FIG. 12 is a side view of the same, and FIG. 13 is a front view of a ring-shaped liner body. Fig. 14, Fig. 14 is a cutaway side view of the same portion, and Fig. 15 is a connection state when the ring-shaped liner body is not used. Fig. 16 is an explanatory cross-sectional view showing an example, Fig. 16 is a cross-sectional view for explaining the same when a ring-shaped liner body is used, and Fig. 17 is a part showing a flexible pipe used in a water pipe cleaning valve according to the present invention. FIG. 18 is a front view showing the omitted water supply device, FIG. 18 is a front view showing the water supply device, and FIG. 19 is a partially cutaway side view showing a state when the water supply device is connected to a water pipe.

In the figure, A is a valve body connected to a water pipe 3 having a connection flange 2 having a bolt hole 1 at the periphery of the connection port, which communicates through a water discharge port 4 and a valve body 5. A joint flange 7 that is joined to the connection flange 2 of the water pipe 3 is provided around the base of the insertion pipe portion 6, and a bolt insertion hole 8 corresponding to the bolt hole 1 is formed in the joint flange 7. In addition to being drilled, a bolt screwing hole 9 is also drilled, and a bolt 10 whose tip is brought into contact with the connection port edge of the water pipe 3 is screwed into the bolt screwing hole 9. At the same time, the bolt 1a can be inserted into the bolt hole 1 and the bolt insertion hole 8 and can be tightened with the nut 1b. Looking back at conventional water pipes of this type, there are those with a connection flange formed on the periphery of the connection port and those with no connection flange.

The cleaning valve for a water pipe according to the present invention is connected to the water pipe of the former type by using its connecting flange, and the water pipe of the latter type is provided with a connecting flange 2 as shown in FIG. It is designed to be attached and connected.

4 and 5 show a sealing rubber ring 11 according to the present invention, which is obtained by applying a required lubricant (not shown) to the outer peripheral surface 6a of the insertion pipe portion 6 at the time of connection. It can be attached together. The diameter, thickness and width of the sealing rubber ring 11 are set in advance by the inner diameter of the connection port of the water pipe 3 to be connected. 6 and 7, reference numeral 12 denotes a cushioning ring body (backup ring), which is formed of an elastic body having an appropriate hardness such as rubber or plastic, and has a slanted cut portion 12a as shown in FIG. , 12a, and a taper surface 12b that abuts a taper surface 13b provided on one side surface of a fixing ring body 13 (lock ring) described later on one end surface. The fixing ring body 13 is made of metal or other appropriate material, has a divided portion 13a in a part as shown in FIGS. 8 to 10, and has a squeezing device engaging member at both ends of the divided portion 13a. It has stop groove portions 13c and 13c. In FIGS. 11 and 12, 20 is a squeezing device of the fixing ring body 13, and 21 and 21 are locking portions thereof. In FIGS. 13 and 14, reference numeral 14 is a ring-shaped liner, which is formed of a material having appropriate hardness and elasticity such as rubber and plastic, and the diameter, thickness, and width dimensions of which are connected in advance to the water pipe 3. It is set by the size of the gap between the inner diameter of the section and the tip surface 6b of the insertion pipe section 6. 15 and 16, reference numeral 15 denotes a fixing ring body fitting groove provided in an annular shape on the inner peripheral surface 3a of the connection port of the water pipe 3.

Reference numeral 16 in FIG. 17 is a flexible pipe used for discharging mud and sand that has entered the inside of the water pipe. One end is connected to the water discharge port 4 of the valve body A, and the other end is used for working. It is used to discharge the mud and sand that have entered the water pipe by guiding it to a gutter (not shown) outside the site.

18 and 19 show a water supply device 18 used when connecting a water pipe 3 having a valve according to the present invention and another water pipe 14 to each other. The water supply device 18 is connected to the connection pipe 19 connected to the pipe 17, and the water supply device 18 and the valve according to the present invention are connected by the flexible pipe 16 to connect the water pipes 3 and 17 of both. It was done like this.

Next, the operation will be described. The present invention provides that, when a large number of water pipes are connected and installed, for example, as shown in FIG. 2, the water pipe 3 at the end thereof (this water pipe has the connecting flange as described above). The insertion pipe part 6 is inserted into the connection port part of the water pipe 3, and the bolt 1a is inserted into the bolt hole 1 of the connection flange 2 of the water pipe 3 and the bolt insertion hole 8 of the joint flange 7 and tightened with the nut 1b. Connect and fix the valve related to the water pipe to the water pipe, open the water control valve for the water pipe related to the laid water pipe to fill the water pipe with water, and open the valve according to the present invention to intrude when installing. The mud and sand inside the tap water pipe are discharged to the outside through the water discharge port 4 of the valve body 5 in this case. In this case, the water pipe 3 and the valve body A are connected at least as shown in FIG. Two types as shown in Figure 16 There is a connection type.

That is, FIG. 15 shows the case of the detachment prevention type (deformed pipe type). At the time of connection, first, a fixing ring annularly provided on the inner peripheral surface 3a of the connection opening of the water pipe 3 is connected. The fixing ring body 13 is fitted into the body fitting groove 15. This fitting means engages with an appropriate throttle device 20 such as pliers shown in FIGS. 11 and 12 in the throttle device locking grooves 13c and 13c provided at both ends of the divided portion 13a of the fixing ring body 13. The outer circumference of the fixing ring body 13 is narrowed by locking both ends of the fixing ring body 13 by bringing the both ends of the fixing ring body 13 into close contact with each other so that the fixing ring body can be fitted in the state. When it is fitted into the groove 15 and then the locking portions 21 and 21 of the aperture device 20 are removed from the fixing ring body 13, the fixing ring body 13 is self-elastic and has its original shape (state shown in FIG. 8). ), And is fitted into the fixing ring body fitting groove 15.

Next, the buffer ring body 12 is pushed in as shown in FIG. 13 by an appropriate pushing tool (not shown) so that the tapered surface 12b of the buffer ring body 12 comes into contact with the tapered surface 13b of the fixing ring body 13. In this case, since the buffer ring body 12 has the oblique cutting portions 12a, 12a in a part thereof, it can be easily pushed in, and the cutting portions 12a, 12a are It is pushed in so that it does not come to the same position as the divided portion 13a of the fixing ring body 13. In this state, apply the required lubricant to the outer peripheral surface 6a of the insertion pipe portion 6 in advance and fit the insertion pipe portion 6 of the valve body A in which the sealing rubber ring body 11 is fitted and attached to the connection port of the water pipe 3. The bolt 1a is inserted into the bolt hole 1 of the connection flange 2 of the water pipe 3 and the bolt insertion hole 8 of the joint flange 7 and tightened and fixed by the nut 1b.

Further, FIG. 14 shows the case of the separation prevention type (straight pipe type), and at the time of connection, first, the connection port inner peripheral surface 3a of the water pipe 3 and the insertion pipe portion of the valve body A are connected. Since the ring-shaped liner body 14 is inserted so as to be interposed between the tip end surface 6b of 6 and the water pipe 3 and the valve body A are fixed in the same manner as shown in FIG. is there.

When disconnecting the connection shown in FIGS. 13 and 14, first, the tightening of the bolt 1 a and the nut 1 b is released, and then the bolt is fitted into the bolt screw hole 9 of the joint flange 7. A certain bolt 10 is pushed around in its tightening direction to bring its tip into contact with the connection edge of the water pipe 3, and further pushed around so that the tip of the bolt 10 pushes the edge of the water pipe 3. However, by this action, the connection between the valve body A and the water pipe 3 is released and the valve body A is easily removed from the water pipe 3.

[0017]

[Effect of the invention]

 According to the present invention, there is provided a valve connected to a water pipe having a connection flange with a bolt hole at the periphery of the connection port, the base part of the insertion pipe part communicating with the water discharge port through the valve body. The joint flange is connected to the connection flange of the water pipe, and the joint flange has a bolt insertion hole corresponding to the bolt hole and a bolt screw hole. Also, in the valve for cleaning a water pipe, the tip of which is abutted against the connection port edge of the water pipe is screwed into this bolt screw hole, and the inner peripheral surface of the connection port portion of the water pipe is A sealing rubber ring, a buffer ring body, and a fixing ring body are provided in the gap between the outer peripheral surface of the insertion pipe portion, and the inner peripheral surface of the connection portion of the water pipe and the tip of the insertion pipe portion. A ring-shaped liner body is placed in the gap with the surface Therefore, it has the advantage that mud and sand that have entered the installed water pipe can be discharged without being discharged from the water faucet of each general household, and that it can be easily removed from the water pipe. Of course, particularly in the present invention, in the gap between the inner peripheral surface of the connection opening of the water pipe and the outer peripheral surface of the insertion pipe of the valve body, a rubber ring for sealing, a buffer ring body, a fixing ring body, Furthermore, by interposing a ring-shaped liner body in the gap between the tip of the insertion pipe part, the connection between the water pipe and the valve body is ensured, the airtightness of the connection part is enhanced, and leakage of water is ensured. Therefore, it has various effects such as being able to reliably discharge mud and sand that have entered the inside of the water pipe.

[Brief description of the drawings]

FIG. 1 is a front view of a connection flange for attaching to a water pipe in which the connection flange is not formed according to the present invention.

FIG. 2 is a partially cutaway side view showing a state in which a water pipe cleaning valve according to the present invention is connected to a female connection opening of a water pipe.

FIG. 3 is a front view of the water pipe cleaning valve shown in FIG. 2;

FIG. 4 is a front view of a rubber ring for sealing according to the present invention.

FIG. 5 is a cutaway side view of the same part.

FIG. 6 is a front view of a buffer ring (backup ring).

FIG. 7 is a cutaway side view of the same part.

FIG. 8 is a front view of a fixing ring (lock ring).

FIG. 9 is a cutaway side view of the same part.

FIG. 10 is a partially enlarged plan view showing a divided portion of the fixing ring body.

FIG. 11 is a front view of a drawing device of the fixing ring body.

FIG. 12 is a side view of the same.

FIG. 13 is a front view of a ring-shaped liner body.

FIG. 14 is a cutaway side view of the same part.

FIG. 15 is an explanatory cross-sectional view illustrating an example of a connection state when a ring-shaped liner body is not used.

FIG. 16 is a sectional view for explaining the same when a ring-shaped liner body is used.

FIG. 17 is a partially omitted front view showing a flexible pipe used in a water pipe cleaning valve according to the present invention.

FIG. 18 is a front view showing a water supply device.

FIG. 19 is a partially cutaway side view showing a state when the water supply device is connected to a water pipe.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Bolt hole 2 Connection flange 3 Water pipe 3a Inner peripheral surface of connection port 4 Water outlet 5 Valve body 6 Insertion pipe part 6a Outer peripheral surface 6b Tip surface 7 Joint flange 8 Bolt insertion hole 9 Bolt screw hole 10 Bolt 11 Rubber ring for sealing Body 12 Buffer ring body 12a Cutting portion 12b Tapered surface 13 Fixing ring body 13a Dividing portion 13b Tapered surface 13c Squeezing device locking groove 14 Ring-shaped liner body 15 Connection opening 16 Pipe 17 Water pipe 18 Water supply device 19 Connection pipe Reference Signs List 20 squeezing device 21 locking part A valve body

Claims (2)

[Utility model registration claims] 1. A valve connected to a water pipe having a connection flange formed with a bolt hole at a periphery of a connection port portion, wherein a base of an insertion pipe portion communicating with a water discharge port through a valve body is provided. A joining flange to be joined to the connection flange of the water pipe is provided around the joint flange, and a bolt insertion hole corresponding to the bolt hole and a bolt screw hole are provided in the joining flange. In a water pipe cleaning valve in which a bolt whose tip is in contact with a connection port edge of the water pipe is screwed into the bolt screw hole, an inner peripheral surface of the connection port portion of the water pipe and an outer circumference of the insertion pipe portion are provided. A water pipe cleaning valve, characterized in that a rubber ring for sealing, a ring for buffering, and a ring for fixing are interposed in a gap with a surface. 2. The valve for cleaning a water pipe according to claim 1, wherein a ring-shaped liner body is interposed in a gap between an inner peripheral surface of a connection port of the water pipe and a tip end surface of the insertion pipe part. And a water pipe cleaning valve.