JP2561967Y2 - Branch valve for insertion into pipes such as water pipes - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a branch valve, and more particularly to an improvement of a branch valve inserted between pipes to branch an existing pipe such as a water pipe.

[0002]

2. Description of the Related Art In recent years, in order to branch an existing pipe such as a water pipe, a pipe provided with a branch valve at a predetermined position in the pipe has been developed.

[0003] That is, a branch valve such as a ball valve is provided inside a branch seat protruding from a side wall of a pipe body, and a fluid can be branched to a branch pipe connected to the branch seat by opening the branch valve. It is composed.

[0004]

However, in the above-mentioned prior art, a branch seat is provided at a predetermined position of the pipe body in advance, so that a branch pipe must be piped in accordance with the branch seat. There is a problem that the piping configuration of the pipe becomes very complicated.

[0005] On the other hand, it is possible to provide a large number of branch seats on the pipe body, but there is a certain limit to this.
Even if a large number of branch seats are provided, they are rarely used, and the formation of unnecessary branch seats is uneconomical in terms of cost.

[0006] In this case, if a predetermined number of branch valves can be appropriately incorporated into the pipe at predetermined locations as required, the cost of the pipe itself can be reduced, which is convenient.

[0007] Therefore, the present invention has been made to solve the above-mentioned conventional problems. The present invention has been made so that the branching operation of an existing pipe such as a water pipe can be performed in an uninterrupted water state by inserting a branch valve. It is an object of the present invention to make it possible to perform anticorrosion treatment on a pipe end face cut to insert a branch valve.

[0008]

That is, in order to solve the above-mentioned problems, the present invention is a branch valve inserted between pipes such as a water supply pipe, and the pipe is connected to a branch valve body 1. A pair of flow holes 2 and a branch hole 5 having a diameter smaller than that of the flow hole 2.
This is a branch valve for insertion into a pipe such as a water supply pipe in which a valve body 6 capable of closing only is rotatably mounted.

[0009]

Therefore, in the branch valve characterized by the above-mentioned structure, the pipe is cut at a desired position, and the pipe is provided with the flow hole 2 of the branch valve body 1.
The branch hole 5 of the branch valve body 1 is closed by the valve body 6 at the time of such insertion, and the valve body 6 is turned to open the branch hole 5 when branching. , Distribution will be branched.

When the valve body 6 rotates, the valve body 6
Is configured so that only the branch hole 5 can be closed, so that the flow hole 2 is not closed, and therefore, the fluid flowing through the tube is not cut off.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings.

In FIG. 1, reference numeral 1 denotes a branch valve main body comprising a casing 3 having a pair of flow holes 2 formed on both sides thereof, and a socket 4 screwed into a substantially central portion of an upper end of the casing 3. The socket 4 is formed with a branch hole 5 having a smaller diameter than the flow hole 2.

Reference numeral 6 denotes a valve body rotatably mounted in the casing 3, which comprises an arc-shaped valve portion 6a capable of closing the branch hole 5 and a pair of leg portions 6b provided opposite to the ends thereof. A valve shaft 7 protrudes laterally at the center of the lower end side of each leg 6b, and one valve shaft 7 is longer than the other valve shaft (not shown). A cock 8 is attached to a distal end portion of the casing 3 protruding outside from one side wall of the casing 3 through the insertion hole 3a, and the other valve shaft is rotatably supported by the other side wall. I have. The size of the flow hole 2 is set so as not to be closed by the valve portion 6a when the valve body 6 rotates as shown in FIG.

Reference numeral 9 denotes an auxiliary pipe screwed into one of the flow holes 2 of the casing 3 so as to be able to advance and retreat, and a seal is provided between the auxiliary pipe 9 and the flow hole 2 by an O-ring 10. An annular packing as a seal member 11 is mounted on each of the front end face 9 and the opening front end face of the other flow hole 2, and a gear 9 a is formed on the outer peripheral face of the flange of the auxiliary pipe 9.

The branch valve according to the present embodiment has the above-described configuration. Next, a case where the branch valve is inserted into a predetermined position of the pipe will be described.

First, as shown in FIG. 2, a half-split annular body 12 is externally fitted at a predetermined position of the existing pipe A, and the annular body 12 has a rack 13 formed on an end peripheral surface. At the inner position of the rack 13, a mounting rod 15 having an annular rail 14 on the front surface is provided over the entire circumference, and a fixed rod 16 having a substantially T-shaped cross section is protruded at the center of the peripheral surface. I have.

A movable floor 17 having a roller bearing 16 provided on an inner wall as shown in FIGS. 3 and 4 is movably inserted in the circumferential direction on the annular rail 14 of the annular body 12 so as to be movable. floor
A plate-like body 19 having a rack 18 formed on one side is fixed to a front surface of the plate 17, and a rail 20 is disposed on the front surface of the plate-like body 19 in a vertical direction.
Is provided.

Next, a tube cutter 21 is mounted on the annular body 12 so as to cut the annular body 12 at a predetermined interval. As shown in FIG. 4, the tube cutting machine 21 has a cutting machine 23 having a built-in electric motor for driving a cutter 22 provided on the front surface, and is rotationally driven to rotate the cutting machine 23 along the annular body 12. Gear 24a
The motor 26 comprises a self-propelled motor 24 having a motor and a lift motor 25 which can be moved toward and away from the tube A. As shown in FIGS. 3 and 5, the gear 26 is supported by a rotating shaft 25a of the lift motor 25. A movable floor 27 having a U-shaped cross section provided on the back surface of the cutting machine 23 is inserted into and attached to the rail 20 so that the moving member 27 meshes with the rack 18 of the plate-shaped body 19. A roller bearing 28 is attached to the inner wall of the movable floor 27.

Thereafter, as shown in FIG. 6, the tank 29 including the annular body 12 is attached to the pipe A. The tank 29 includes a pair of upper and lower halves 29a and 29b, and a semicircular notch 30 that can be fitted to the tube A is provided at a predetermined position on both sides of each of the halves 29a and 29b.
(See FIG. 7 (b)), and a screw rod 31 rotatable along the inner wall is arranged on one half body 29a.
One end thereof protrudes outside from one end face of the half body 29a, and a handle 32 is attached. And this screw rod 31
The fixing rod 16 of the annular body 12 is fixed to the back surface of the mounting piece 34 protruding from the lower surface of the moving rod 33 screwed with a bolt or the like.

The branch hole 5 of the branch valve 35 is closed by a valve body 6.

Next, as shown in FIG. 6 (b), the other half body 29b
Is attached to one half body 29a to assemble the tank 29.
A predetermined seal is provided between the half bodies 29a and 29b and between the notch 30 of the half bodies 29a and 29b and the tube A.

When the cutting machine 23 is started and the cutter 22 is driven to rotate, and the cutting machine 23 is started to be moved by the elevating motor 25 while moving the cutting machine 23 to the pipe A side by a predetermined amount, the cutting machine 23 is automatically started. The gear 24a of the running motor 24 is the rack 13 of the annular body 12.
, And at this time, the elevating motor 25 stops.

Thereafter, the self-propelled motor 24 starts, and the self-propelled motor 24 moves along the annular body 12. Thus, the pipe A is cut with a predetermined width by the cutting machine 23, and the fluid in the pipe A flows through the tank 29.

Next, when the handle 32 is rotated as shown in FIG. 7A, the branch valve 35 is moved through the screw rod 31 and the moving rod 33.
Moves in the tank 29 together with the part A 'of the cut pipe A, and stops the rotation of the handle 32 when the branch valve 35 comes between the pipes A.

Thereafter, the rotary shaft 36 provided on one side surface of the other half body 29b is moved to the branch valve 35 side, and the gear 37 attached to the tip thereof as shown in FIG. 9 meshes with a gear 9a. When the rotating shaft 36 is rotated, the auxiliary pipe 9 is unscrewed from the flow hole 2 of the branch valve main body 1, and the auxiliary pipe 9 and the flow hole 2 of the branch valve main body 1 are connected to each other. The fluid flows through the branch valve 35.

Since the cut end face of the tube A is in contact with the annular packing 11 and protected, a good seal is maintained without rust or the like being generated on the end face.

As described above, the branch valve 35 is previously mounted in the tank 29, the pipe A is cut in the tank 29, a part A 'of the cut pipe A and the movement of the branch valve 35, and the pipe is moved. Body A and branch valve
In order to perform a series of work of connection with 35,
As a result, the work efficiency can be greatly improved.

Next, as shown in FIG. 7 (b), the other half body 29b
Is removed from the pipe A, the branch valve 35 is further removed from the mounting piece 34 of the moving rod 33, and then one half body 29a is detached.

Thereafter, an inward convex portion provided at one end as shown in FIG.
An annular flange 39 having a cutout (not shown) is partially inserted into the auxiliary pipe 9 so that the fitting 38 is inserted between the distal end surface of the flow hole 2 of the branch valve body 1 and the back surface of the flange of the auxiliary pipe 9. Externally.

Next, a packing 40 is mounted between the inner wall surface of the flange 39 and the outer peripheral surface of the pipe A, and a splitting wheel 41 having a notch is partially fitted to the pipe A. 41 and the flange 39 are joined by bolts, nuts, etc.
And the connecting portion of the branch valve 35 is sealed, and the operation of mounting the branch valve 35 is completed.

When the fluid is branched via the branch valve 35, a branch pipe (not shown) is connected to the socket 4 of the branch valve 35 as appropriate, and then the cock 8 is connected as shown in FIG.
Is rotated by 180 ° to open the branch hole 5.

In this case, since the valve element 6 is configured so that only the branch hole 5 of the branch valve 35 can be closed, the flow hole 2 is not closed when the valve element 6 rotates, and thus the pipe A The fluid flowing through the valve body 6 is not interrupted, and the valve body 6 rotated as described above moves to the portion facing the branch hole 5 and does not hinder the fluid flow.

That is, the branch valve 35 can be inserted at a desired position to be branched without complicating the piping configuration of the branch pipe, and the fluid flowing through the pipe A does not cause water interruption. A series of branching operations can be performed.

Further, since the branch valve 35 according to the present embodiment has a very simple overall configuration, there is an advantage that the branch valve 35 can be manufactured easily and inexpensively.

In the above embodiment, the auxiliary pipe 9 is provided in one of the flow holes 2 of the branch valve 35, but the auxiliary pipe 9 is not necessarily provided.

The means for inserting the branch valve 35 into the pipe A is not limited to the above embodiment.

[0037]

[Effect of the Invention] As described above, in the present invention, since the valve body is configured so that only the branch hole can be closed, when the valve body rotates to branch the flowing fluid from the branch hole, the flow hole is closed. It is not closed, so that it is possible to obtain a remarkable effect that the fluid can be branched to the branch hole without causing a break in the flowing fluid.

Further, since the branch valve according to the present invention has a very simple structure, it has a practical effect that it can be manufactured easily and at low cost.

[Brief description of the drawings]

FIG. 1 shows an embodiment of a branch valve according to the present invention, wherein (a) is a front sectional view and (b) is a half sectional view.

FIG. 2 is a partial cross-sectional front view showing a state where a pipe cutting machine is attached to a pipe body.

FIG. 3 is an enlarged view of the main part.

FIG. 4 is a plan view of the same.

FIG. 5 is a side view of the same.

6 (a) and 6 (b) are cross-sectional views showing construction procedures.

FIGS. 7A and 7B are cross-sectional views showing a construction procedure.

FIG. 8 is a sectional view showing a step of connecting the branch valve to the pipe.

FIG. 9 is a cross-sectional view of an essential part showing an example of a sealing means for sealing a pipe to a valve.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Branch valve main body 2 ... Flow hole 5 ... Branch hole 6 ... Valve 6a ... Valve part 6b ... Leg 11 ... Seal member

Claims (3)

(57) [Scope of request for utility model registration] 1. A branch valve inserted between pipes such as a water supply pipe, said pair of flow holes (2) connecting said pipes to a branch valve body (1), and said flow holes (2). (5)
And a valve body (6) capable of closing only the branch hole (5) is rotatably mounted in the branch valve body (1). Branch valve for insertion into pipe. The valve body (6) has a valve portion (6a) capable of closing a branch hole (5) and a pair of leg portions (6b) provided opposite to a side portion of the valve portion (6a). 2. The pipe body according to claim 1, wherein the leg portion (6b) is rotatably supported on the side wall of the branch valve body (1). Branch valve for insertion into 3. An auxiliary pipe (9) is screwed into said one of the communication holes (2) so as to be able to advance and retreat, and a front end surface of the auxiliary pipe (9) and an opening front surface forming the other communication hole (2). 3. The branch valve for insertion into a pipe such as a water pipe according to claim 1 or 2, wherein a seal member (11) abutting on a cut end surface of the pipe to be connected is mounted on the pipe.