JPH0248035Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to a drain pipe used in a sludge cleaning device or the like.

Conventional technology and its problems Drain piping installed in sludge cleaning equipment, etc.
There is one shown in the figure. A drain pipe is installed at the bottom of the tank, and water is drained by opening and closing a valve installed in this pipe. However, with this method, there is a short distance between the bottom of the tank and the valve, and as shown in Figure 4, the piping leading to this valve often gets clogged with sludge and other conveyed materials, making it impossible to drain water even when the valve is opened. .

The present invention prevents clogging of the piping by providing a slidable stopper in the drain piping.
The purpose is to ensure drainage when necessary.

A solution to the problem: A straight pipe is provided at the drain port of the cleaning device, a branch pipe is provided in the middle of this straight pipe, a valve is provided on this branch pipe, and the drain port is attached to the branch pipe within the straight pipe. A blocking rod that is inserted up to the drain port is provided so as to be able to move forward and backward, and this blocking rod that reaches the drain port prevents clogging in the straight pipe.

Embodiments The present invention will be described below based on embodiments shown in the drawings.

In the figure, reference numeral 1 denotes a cleaning tank for cleaning dirty sand and the like, and the dirty sand thrown into the tank is washed with cleaning water supplied into the tank. A screw conveyor 2 is provided in the cleaning tank 1, and the cleaned dirt is carried out by driving the screw conveyor. A drain port is provided on the bottom side of the cleaning tank, and a straight drain pipe 3 is provided protruding from the outside of the drain port. This drain pipe 3 includes a straight pipe protruding from the outside of the cleaning tank at the drain port, and a branch pipe 8 arranged in a T-shape with respect to the straight pipe 3a.
It consists of a blocking rod 4 that is inserted into the straight pipe so that it can move forward and backward. The straight pipe 3a is horizontally or inclined so that the tip side is lowered and protrudes to the outside of the cleaning tank, and a valve 7 is provided in a branch pipe 8 that is branched from the straight pipe and protrudes substantially vertically. Inside this straight pipe 3a is a pipe-shaped or rod-shaped blocking rod 4 whose tip is closed.
The tip of this blocking rod 4 should normally reach the drain port, and the shape of this tip should match the inner circumferential shape of the tank so as not to interfere with the operation of the screw conveyor. .

Further, the other end of the blocking rod 4, that is, the side protruding from the straight pipe, is provided with a blank flange 5 that closes the end of the drain pipe.
At the same time, a gasket 6 is interposed between the outer peripheral surface of the blocking plate and the straight pipe or the blind flange to prevent water from leaking from the gap between the blocking rod and the straight pipe. In the embodiment formed in this way, when the blind flange 5 is removed from the straight pipe, the blocking rod 4 is also slid (retracted) inside the straight pipe, and is connected from the drain port to the branch pipe through a part of the straight pipe. Allow drainage by opening the valve.

In addition, in the embodiment shown in FIG. 2, a blind flange is not used, and a lever 9 is provided at the end of the blocking rod, and by swinging this lever 9, the blocking rod 4 is slid within the straight pipe, and the branch pipe tip opening is This is to open and close the door.

Next, the operation of the present invention will be explained.

The dirty sand washed in the washing tank is carried out by the drive of the screw conveyor, but when draining the tank, in the embodiment shown in Fig. 1, first loosen the bolts of the blank flange, Next, the flange is moved in the longitudinal direction of the straight pipe. As the blind flange moves horizontally, the blocking rod fixed to the flange also moves within the straight pipe. When the tip of this blocking rod passes through the branch pipe attachment port, it is temporarily stopped.

When the valve is further opened, the wastewater flows downward through the branch pipe. In this case, if the conveyed material (dirty sand) clogs in front of the valve, it will not be possible to drain the water. However, in this invention, a blocking rod is always inserted between the drain port and the branch pipe installation port, so the straight pipe will not become clogged and the water will be drained reliably. can.

Further, in the embodiment shown in FIG. 2, since the blocking rod is moved by tilting the lever, water can be drained by opening the valve next.

Effects of the invention: Since the inner pipe is inserted freely between the drain pipe inlet and the valve, the conveyed material does not accumulate in the drain pipe and can be drained smoothly by operating the valve.

[Brief explanation of the drawing]

FIG. 1 is a sectional view, FIG. 2 is a sectional view of a different embodiment, and FIG. 3 is an example of a sludge cleaning device, in which A is a front view and B is a side view. FIG. 4 is an explanatory diagram of a known example. 1 is a cleaning tank, 2 is a screw conveyor, 3 is a drain pipe, 4 is a blocking rod, 5 is a blank flange, 6
is the seal, 7 is the valve, 8 is the branch pipe, and 9 is the lever.

Claims (1)

[Scope of utility model registration request] In a drain pipe in which drainage from a sludge cleaning device or the like is carried out by opening and closing a valve provided in the drain piping, a straight pipe is provided at the drain port of the cleaning device and a branch pipe is provided with a valve at an intermediate portion of the straight pipe; A drain pipe provided with a blocking rod that can be inserted freely from the drain port to the branch pipe attachment part inside the straight pipe.