JP3182365U - Slide valve for fluid branch - Google Patents

Abstract

Provided is a fluid branch slide valve that is less likely to be clogged, is inexpensive, and has a quick delivery date.
SOLUTION: A straight pipe 1 having a hole portion 11 opened by cutting a part thereof, a short tube 21 having one end attached to the hole portion 11, and a slide valve 3 attached to the other end of the short tube 21. And a fluid branching slide valve 3 constituted by a hole 11 and a connecting member 2 connecting the slide valve 3.
[Selection] Figure 1

Description

  The present invention relates to a slide valve for fluid branching in which a slide valve and a straight pipe are integrated.

Since the slide valve is simple in structure and easy to handle, it is widely used for switching sludge in water treatment equipment and septic tanks, switching water in fish farms, switching branching and confluence of sewage, etc. Yes.
Moreover, as shown to patent document 1, it is used also for the press injection of the concrete in a steel pipe.
Furthermore, as shown in FIG. 4, it may be used as a branching portion when placing concrete from a single concrete pump p to a plurality of locations.
In that case, a T-shaped cheese pipe a is interposed at a plurality of locations in the middle of the transport pipe d connected to the concrete pump p, and a slide valve b is interposed at the boundary with the discharge pipe e branched from the cheese pipe a. .
Then, since the slide valve b can be closed together with the discharge pipe e in which the concrete has been placed, it is possible to achieve the effect that it is possible to place concrete from a single concrete pump p to a plurality of locations with a simple structure. .

JP-A-7-1976657

The structure combining the T-shaped tube called the commercial cheese tube a and the slide valve b as described above has the following problems. (Fig. 5)
<1> A commercially available cheese tube a has a curved shape in its T-shaped portion in order to maintain the smoothness of the inner surface.
<2> As a result, it is necessary to secure the length under the neck of the T-shaped tube by a fixed dimension h, and the conventional product requires about 5 cm.
<3> When the length h under the neck is increased to about 5 cm, the concrete c is likely to be stored therein, as shown in FIG. 5, the pipe resistance during transportation is increased, and the moisture of the concrete c is likely to deviate. As a result, the concrete c being pumped may be blocked.
<4> When clogging occurred during the transport of the concrete c, the concrete c was discharged by pushing the periphery of the valve b with a hammer to promote fluidization of the clogged concrete c.
<5> Further, after the placement work was completed, the concrete c was stored in the lower neck portion of the cheese tube a and hardened, so that the removal work was necessary.
<6> The cheese branch a for fluid branching used is a custom-made product, so it is expensive and requires a long delivery time.

The slide valve for fluid branching of the present invention that solves the problems as described above includes a straight pipe having a hole opening part cut and opened, a slide valve attached to the hole opening part, a hole opening part, and a slide. It is characterized by comprising a connecting member for connecting a valve.
Further, the fluid branching slide valve of the present invention includes a straight pipe having a hole part opened by cutting a part thereof, a short pipe as a connecting member having one end attached to the hole part, and the other end of the short pipe. The distance between the straight pipe and the top plate of the slide valve, that is, the length under the neck of the short pipe is about 5 mm, which is the limit that enables welding of both. It is what.

Since the fluid branching slide valve of the present invention is as described above, the following effects can be obtained.
<1> Since the neck of the fluid branch portion is short or does not exist, when concrete is pumped, its moisture is difficult to escape and fluidity can be maintained. Therefore, it is difficult for concrete to block up inside the pipe body.
<2> As a result, in the past, when time passed after the pumping of concrete was interrupted, the work was done to restore fluidity by hitting the valve with a hammer. Since the neck length is short or does not exist, the pipe resistance of the portion is reduced. Therefore, it is difficult to cause blockage and time is not spent on unnecessary work.
<3> Since the pipe resistance decreases because the neck length is short or does not exist, it is possible to suppress the occurrence of the pipe shaking phenomenon that increases in proportion to the increase in the pipe resistance. By reducing this fluctuation, the pressure for pumping the fluid can be reduced.
<4> All the parts constituting the fluid branching slide valve of the present invention are ready-made products. For this reason, a specially prepared cheese tube as in the conventional case is unnecessary, and it can be expected to shorten the delivery time and the material cost.

Explanatory drawing of the Example of the slide valve 3 for fluid branching of this invention. The side view of the use condition. Sectional drawing of another Example. Explanatory drawing of the use condition of the conventional slide valve 3 for fluid branching. Explanatory drawing of the problem of the slide valve 3 for the conventional fluid branching.

  DESCRIPTION OF EMBODIMENTS Hereinafter, a preferred embodiment of a fluid branching slide valve of the present invention will be described in detail with reference to the drawings.

<1> Overall Configuration The fluid branching slide valve according to the present invention includes a straight pipe 1, a short pipe 21 that functions as a connecting member 2, and a slide valve 3.

<2> Straight pipe The straight pipe 1 is a normal commercially available steel pipe.
The straight pipe 1 is provided with a perforated portion 11 which is cut and opened at a substantially central position in the length direction.
The shape of the hole opening 11 is a hole having a circular shape when viewed from above with the straight pipe 1 lying horizontally.
And the internal diameter of the hole whose circular plan view is equal is comprised with the internal diameter of the short tube 21 mentioned later.
The length of the straight pipe 1 in the axial direction is longer than the width of the main body of the slide valve 3 described later.
Here, the width of the slide valve 3 is a dimension in a direction perpendicular to the reciprocating direction of the slide plate 31 that slides inside the slide valve 3 main body.

<3> Short Pipe The short pipe 21 is a kind of connecting member 2 that connects the straight pipe 1 and the slide valve 3.
The short pipe 21 is a steel pipe shorter than the straight pipe 1 using a commercially available steel pipe.
One end of the short pipe 21 is attached to the hole opening 11 of the straight pipe 1 from a direction perpendicular to the central axis of the straight pipe 1.
Therefore, one end of the short pipe 21 is a part of an upward circle when viewed from the side of the straight pipe 1, and a part of a downward circle when viewed from the cross section of the straight pipe.
A slide valve 3 described later is attached to the other end of the short pipe 21.

<4> Slide Valve The slide valve 3 is a known valve having a shape that pulls out the slide plate 31 from the inside of a rectangular box. The slide plate 31 is provided between the front plate 32 and the back plate 33. Is slidably stored.
Through holes are opened at positions facing the front plate 32 and the back plate 33.
Furthermore, since the through-holes that pass through are also opened in the slide plate 31 between the front plate 32 and the back plate 33, the positions of all the through-holes can be formed at a certain position to form the through-holes.
The inner diameter of the through hole is equal to the inner diameter of the short tube 21 described above.

<5> Fluid branching slide valve The above-described members are integrated by welding to constitute the fluid branching slide valve of the present invention.
That is, the short pipe 21 is welded to the hole opening 11 in a state perpendicular to the central axis of the straight pipe 1.
Since one end of the short tube 21 is formed in an arc shape as described above, the hole opening portion 11 of the straight tube 1 and the internal space of the short tube 21 can be made to coincide with each other accurately.
The slide valve 3 is attached to the other end of the short tube 21 in a state orthogonal to the central axis of the short tube 21.
In this case, the through hole of the slide valve 3 is attached so as to coincide with the internal space of the short tube 21.

<6> Below the short pipe If the length of the short pipe 21 in the central axis direction of the fluid branching portion is short, the distance between the front plate 32 of the slide valve 3 and the outer surface of the straight pipe 1 approaches.
The shorter the distance, the shorter the contact area of the fluid passing through the interior.
As a result, the pipe resistance is reduced, and particularly when concrete is pumped, the deviation of moisture in the concrete is reduced and blockage hardly occurs.
However, when the straight pipe 1 and the surface plate 32 of the slide valve 3 are in contact with each other, it is difficult to weld the slide valve 3 and the short pipe 21.
Considering them, it is practical to manufacture the short tube 21 so that the length under the neck of the short tube 21 is about 5 mm.

<7> Function of Short Short Pipe As described above, the fluid branching slide valve of the present invention can be configured so that the neck lower part of the fluid branching part is extremely short.
Therefore, when the concrete is pumped, the moisture of the concrete is difficult to escape and the fluidity does not deteriorate, so that the blockage hardly occurs.
For this reason, the valve that has passed the time after pumping has been hit with a hammer to promote fluidization, but the fluid branching slide valve of the present invention has a short fluid grounding surface. There is no need to do work.
Moreover, since the pipe resistance is reduced by shortening the length of the short pipe 21 in the axial direction, that is, under the neck, it is possible to suppress the occurrence of the pipe shaking phenomenon that increases in proportion to the increase in the pipe resistance. .
By reducing this fluctuation, the pressure for pumping the fluid can be reduced.

<8> Effect by combination of off-the-shelf products The parts constituting the fluid branching slide valve of the present invention are all off-the-shelf products.
For this reason, a specially prepared cheese tube as in the conventional case is unnecessary, and it can be expected to shorten the delivery time and the material cost.
For example, it was possible to reduce the delivery time of a conventional product from one month to about half of that, and to reduce the production cost by 20%.

<9> Other Examples In the above examples, the structure in which the short tube 21 is provided as one of the connection members 2 has been described.
However, as shown in FIG. 3, a hole 11 is provided in a part of the straight pipe 1, and the slide valve 3 is directly welded to the hole 11 to reinforce the hole 11 and the slide valve 3. A connection member 2 may be used for connection.
The connecting member 2 may be a triangular plate 22 having a circular arc on one side.

  It can be placed in the middle of a concrete pumping pipe and used for placing concrete in multiple locations.

1: Straight pipe 11: Hole opening 2: Connection member 21: Short pipe 22: Plate 3: Slide valve

Claims (2)

A straight pipe having a hole opening part cut and opened;
A slide valve attached to the hole,
Consists of a hole and a connecting member that connects the slide valve,
Slide valve for fluid branching. A straight pipe having a hole opening part cut and opened;
A short tube as a connecting member with one end attached to the hole opening,
It consists of a slide valve attached to the other end of the short pipe,
The distance between the straight pipe and the surface of the slide valve, that is, the length under the neck of the short pipe was configured to be about 5 mm, which is the limit that enables welding of both.
Slide valve for fluid branching.

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