JPH02209512A - Gate pump device - Google Patents

Abstract

PURPOSE:To allow foreign matters flowing at the time of natural fall to flow away downstream by installing a gate pump, arranging a triangle strainer upstream it in such a way as surrounding it, and thereby eliminating possibility for such foreign matters to stagnate around the pump. CONSTITUTION:A strainer 3 is arranged in such a way as widening in triangular form with the upstream of a gate pump 2 as the crest and facing downstream at the side faces of the pump 2. A slope is furnished shrinking toward the pump 2 from the upper part of this strainer 3 toward the lower part, and the bottom floor 4 is raised from the riverbed 5, and downward slope is provided facing downstream. Thereby the screen of a foreign matter removing machine 6 is lifted while the gate pump 2 is at a standstill to provide downtime, and deposit of the foreign matters due to natural fall is eliminated to allow it to flow downstream.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a gate pump device that allows garbage flowing into a waterway during natural flow of a river to flow away without accumulating around the gate pump. The present invention relates to a gate pump device permanently installed with a strainer with an improved mounting method and shape.

[Conventional technology]

In general, at gate pump stations, the gate pump is installed directly in the river, and during heavy rain, the water level on the drainage side (outside water level)
When the water level becomes higher than the water level at the pump station (inner water level),
It is equipped with a gate to prevent backflow of the outside water level, and is used by lowering the gate pump into the water, which is a combination of the gate and the pump.

During normal times, this gate pump is lifted out of the water and
Rivers flow naturally. All of the above operations are automatically operated depending on the water level.

Furthermore, since the garbage flowing in the river has a negative effect on the pump, a dust remover is installed upstream of the gate pump to remove the garbage. In order to prevent dust from accumulating in the pump station, this dust remover must be operated constantly even during periods when the gate pump is not in operation, making maintenance difficult and costly. There was a problem with the increase in

Normal pumping stations other than gate pump stations are constructed in bypass channels that are diverted from rivers.

There was no problem that the dust remover installed in the bypass waterway had to be operated during the period when the drainage pump was not in operation. To attach.

The above problem occurs.

However, gate pumps require a small pump station space to be installed directly on a river, and the construction cost is low, so it was necessary to solve the above problems.

In addition, regarding the gate pump device, there is no particular prior art document that should be mentioned.

[Problem to be solved by the invention]

The above-mentioned conventional technology has a problem in that the dust remover must be turned into M rotation even during the period when the gate pump is inactive.

The present invention was made in order to solve the above-mentioned problems in the prior art.1 - During the pump suspension period, the screen of the # dust machine is pulled up and the operation is stopped, and the garbage flowing down by gravity is removed. It is an object of the present invention to provide a gate pump device that can flush waste downstream without accumulating it around the gate pump.

[Means to solve the problem]

In order to achieve the above object, the configuration of the gate pump device according to the present invention includes a gate pump and a strainer provided on the upstream side of the gate pump so as to surround the pump. The pump is arranged in a triangular shape with the upstream side as the apex and the sides of the pump extending downstream.

Further, the strainer is arranged with a gradient that decreases from the upper part of the strainer toward the lower part toward the gate pump side.

Furthermore, the strainer is arranged so that its bottom is raised above the river bed and slopes downward toward the downstream.

In addition, the idea and specific means for developing the present invention are as follows.

The basic principle of the present invention is to permanently install strainers on three sides around the gate pump: the upstream side and both sides. However, in order to allow the waste to flow away by gravity without becoming stagnant around the pump, special innovations have been made to the shape of the strainer.

Based on the above-mentioned principle, the strainer of the present invention has a triangular shape with the upstream side of the gate pump as the apex and the face side of the pump as the two sides of the triangle. Strainer.

The bottom of the strainer is raised above the riverbed where the gate pump is installed, and the bottom has a downward slope from the upstream side to the downstream side.

Further, the strainer has a slope that decreases from the upper end toward the lower end toward the gate pump.

[Effect]

The working of the above technical means is as follows.

By forming the strainer into a triangular shape with the apex on the upstream side of the gate pump, the garbage that flows down by gravity flows downstream without being stagnant around the pump.

The bottom of the strainer is raised and has a slope from the upstream side to the downstream side, so that the garbage that passes through the strainer does not stagnate inside the strainer.

It has the effect of causing garbage to flow down.

In addition, the slope that decreases from the top to the bottom of the strainer toward the gate pump allows dirt attached to the strainer to fall easily, and has the effect of preventing clogging of the strainer.

〔Example〕

Two embodiments of the present invention will be described below with reference to FIGS. 1 to 4.

Fig. 1 is a configuration diagram of a gate pump station according to an embodiment of the present invention, Fig. 2 is a plan view of the gate pump device section viewed from above, and Fig. 3 is a diagram showing the gate pump device section on the upstream side. 4 is a sectional view of the strainer.

In FIG. 1, 1 is the gate of the gate pump mW, 2
1 is a submersible pump connected to the gate 1 and installed in the river; 3 is a strainer provided so as to surround three sides of the gate pump 2; 4 is the bottom floor of the strainer 3; 5 is the bottom of the strainer 3; Riverbed 6 is the 11th one placed upstream of gate 1.

Strainer 3 around gate pump 2 as shown each time
is permanently installed to form the gate pump device.

The strainer 3 is connected to the gate pump 2 as shown in FIG.
On the other hand, the gate pump 2 is disposed in a triangular shape extending downstream from the side surface of the gate pump 2 with the upstream side being the apex, and therefore, the garbage flowing down can easily flow down without being stagnant.

In addition, as shown in FIGS. 1 and 3, the strainer 1 strainer 3 has a slope that decreases from the upper end to the lower end toward the gate pump 2, and therefore, dirt attached to the strainer 3 is easily removed. It falls and flows downstream.

Furthermore, as shown in FIG. 1, the bottom bed 4 of the strainer 1 nona 3 has a strainer section raised from the river bed 5, and has a downward slope from the upstream side to the downstream side.
Therefore, the garbage that has passed through the strainer 3 also flows down without being deposited on the strainer 3.

Furthermore, as shown in FIG. 4, since the strainer 3 is wide and installed with a slope, the debris falls easily and does not allow, for example, string-like debris to get wrapped around the strainer 3.

According to this embodiment, there are the following effects.

It is not necessary to operate the dust remover 6 during the period when the gate pump is stopped, and it is only necessary to operate it in an emergency such as heavy rain.

For example, while the game pump 2 is stopped, the dust remover 6 is pulled up and put into a rest state.

When the waste flows down by gravity, there is only one garbage because the triangular strainer 3 is permanently installed in the gate pump device.

Dust does not accumulate around the gate pump 2.

Therefore, in an emergency, the gate pump 2 can be operated without the problem of waste.

In addition, in the above example, a gate pump station with a dust remover was described, but in rivers with little garbage, the dust remover can be abolished by making the strainer triangular and surrounding the entire area around the gate pump. It is.

〔Effect of the invention〕

As described above, according to the present invention, during the gate pump suspension period, the screen of the dust remover is pulled up and the operation is stopped, and the garbage flowing down by gravity is not accumulated around the gate pump, and the garbage is sent downstream. A flushable gate pump device can be provided.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of a gate pump station according to an embodiment of the present invention, FIG. 2 is a plan view of the gate pump device section viewed from above, and FIG. 3 is a plan view of the gate pump device section viewed from the upstream side. The front view and FIG. 4 are cross-sectional views of the strainer. 2... Gate pump, 3... Strainer, 4...
Substrate.

Claims (1)

[Claims] 1. A gate pump device comprising a gate pump and a strainer provided upstream of the gate pump so as to surround the pump. 2. The gate according to claim 1, characterized in that the strainer is disposed in a triangular shape extending downstream from the side of the gate pump with the apex at the upstream side of the gate pump. pump equipment. 3. The gate pump device according to claim 1, wherein the strainer is disposed with a slope that decreases from the top to the bottom of the strainer toward the gate pump. 4. The gate pump device according to claim 1, wherein the strainer has a bottom raised by the river bed and is arranged with a downward slope toward the downstream.