JPH10280355A - Removing device of sludge in bottom of pond - Google Patents

Abstract

PROBLEM TO BE SOLVED: To efficiently remove the sludge on the bottom of a pond, which is harmful to fish. SOLUTION: The upper end of a U-shaped pipe 1 which is extended down from a pit 6 in the water bottom and bent sideways and raised upward is set lower than the water level, and a unit pipe 2 whose upper end is higher than the water level is detachably fitted to the upper end of the U-shaped pipe 1, and the upper end of the U-shaped pipe 1 and the unit pipe 2 are contained in the vertical part of an elbow 3 whose upper end is set at the water level in the water area, and the lateral part of the elbow 3 is connected to a drain pipe, as equipment to remove the sludge of the bottom of a pond. When the unit pipe 2 is removed in a required time, the sludge of the water bottom is discharged to overflow together with water from the upper end of the U-shaped pipe 1 and removed into the drain pipe through the elbow 3. Accordingly, this removing device of sludge can be easily operated and the sludge can be efficiently removed. And the constitution of equipment is simple and the fabrication cost is low. In this way, the water quality is retained and fish is kept safe.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a facility for removing sludge from the bottom of a pond that is harmful to fish.

[0002]

2. Description of the Related Art Conventionally, in a pond that keeps Nishikigoi and the like, the sludge deposited on the bottom of the pond creates an unsanitary environment, which adversely affects the growth of the breeding product. In other words, excrement of manure and food left behind by the breeding, dead microorganisms and plankton, etc. form sludge, and the organic nitrogen compounds contained therein are oxidized by oxygen in the water to produce ammonia or nitrite nitrogen. Formed and these are known to be extremely harmful to fish. As a countermeasure, attempts have been made to constantly filter the pond water while circulating to keep it transparent and remove substances before oxidation, but the filtration equipment for this is not easy.

In addition, sand, gravel, pebbles and the like are deposited on the bottom of the pond. In spite of the necessity of removing sludge from the pond bottom including these, it is the fact that it has not been done easily. As a shorthand,
In order to scoop up the sludge using an incomplete but long handle, or to remove the sludge for completeness, there is a method to remove the sludge once, but in the latter case, the work is extremely complicated and frequent. It is not practical because it needs to be done.

[0004]

SUMMARY OF THE INVENTION According to the present invention, sludge from a pond on which organic nitrogen compounds have been deposited before becoming harmful to fish, ie, before oxidation, can be efficiently removed by simple means. The facility will not be provided.

[0005]

Here, the inventor of the present invention has proposed, as a sludge removal facility at the bottom of a pond, the lower end of a pit at the bottom of the pond, which is bent laterally, and the upper end of a U-shaped pipe which rises further is pond. And a short pipe whose upper end is higher than the pond water level is detachably fitted to the upper end of the U-shaped pipe, and the upper end of the U-shaped pipe and its To find the part of the short pipe except the upper part in the vertical direction part of the elbow whose upper end position is set to the pond water level in the water area, and connect the horizontal part of the elbow to the drain pipe It was just.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS In constructing sludge removal equipment at the bottom of a pond, a pit is provided at the center of the pond, which has a loose conical shape, and a U-shaped pipe is connected to the pit so that sludge can fall. A short pipe of the same diameter is detachably fitted to the end. Here, the U-shaped pipe has a shape close to the L-shape. In particular, the upper end of the U-shaped pipe and the part with the short pipe are
Housed in the vertical direction part of the elbow which has about twice the diameter,
An odd-shaped socket with a reduced diameter is connected to the end of the horizontal portion of the elbow, and a pipe is connected to the socket to guide the drain from a drainage basin to a sewer pipe.
The upper end of the elbow in the vertical direction should match the water level of the pond. Thereby, when the water level of the pond rises, water is sucked in from the upper end opening of the elbow in the water area, and the water level of the pond can be kept constant. The short tube is set so as to protrude several cm from the upper end of the vertical portion of the elbow. This keeps the water level in the pond and makes it easier to operate the short pipe by hand.

The height difference between the upper end of the U-shaped pipe and the upper end of the vertical portion of the elbow above it is 5 to 15c.
m, which is selected according to the degree of sludge generation. The greater the height difference, the greater the force to extrude sludge. To remove sludge from the bottom of the pond, pull out a short pipe that is easily accessible from the bottom of the pond, and remove the upper end of the U-shaped pipe and the upper end of the elbow in the vertical direction (equal to the water level of the pond). Due to the height difference of
A rising water flow is generated in the U-shaped pipe, and the sludge accumulated near the entrance of the U-shaped pipe is formed into a mud flow, and the mud flow extruded from the upper end of the U-shaped pipe is directed in a horizontal direction of the elbow. It is a mechanism that is discharged from the part and guided to sewage. This needs to be done from time to time.

The U-shaped pipes, short pipes, elbows and sockets used in the pond bottom sludge removal equipment of the present invention are combined with commercially available products made of polyvinyl chloride or the like, and cut into desired shapes. It can be used after bonding.

[0009]

The present invention will be described more specifically with reference to the following examples. In a pond with a depth of 1.5 m, a pit 6 with a diameter of 100 mm is provided at the center of the bottom of the pond.
A U-shaped pipe 1 having an IS of 50 mm is connected, and a short pipe 2 of JIS 50 mm with a socket 4 joined thereto is detachably fitted to the upper end thereof. The upper end of the U-shaped pipe 1 and the part with the short pipe 2 are housed in the vertical direction part of the elbow 3 of JIS φ100 mm, and the other end of the horizontal direction part of the elbow 3 is connected to a modified socket 5 lowered to JIS φ50 mm,
Further, the pipe is led to the drainage basin 8. The short tube 2 is set so as to project 4 cm from the upper end of the vertical direction portion of the elbow 3.
In addition, the upper end of elbow 3 is located near the edge of the accessible pond,
Make sure to match the pond water level. The height difference between the upper end of the U-shaped pipe 1 and the upper end of the elbow 3 is 15 cm. In removing sludge from the pond bottom, if the short pipe 2 is withdrawn at any time, a sludge flow is spouted from the upper end of the U-shaped pipe 1 and flows out to the sewage.

[0010]

The sludge removal equipment at the bottom of the pond according to the present invention is easy to operate and can remove sludge effectively. The configuration of the equipment itself is simple and the production cost is low. As a result, the water quality of the pond can be maintained, the health of the bred fish can be maintained, and the appreciation can be enjoyed.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram showing sludge removal equipment at a pond bottom.

FIG. 2 is an explanatory diagram showing an inside of an elbow in a sludge removing facility at a pond bottom.

FIG. 3 is an explanatory view showing the progress of a sludge flow in an elbow when sludge is removed from a pond bottom.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 U-shaped piping 2 Short pipe 3 Elbow 4 Socket 5 Irregular socket 6 Pit 7 Pond water 8 Drainage basin

Claims (1)

[Claims] An upper end of a U-shaped pipe which descends a pit at the bottom of the pond and is bent laterally and further rises is set at a position lower than the water level of the pond. The short pipe whose upper end is located higher than the water level of the pond is detachably fitted, and the upper end of the U-shaped pipe and the portion of the short pipe excluding the upper part are located at the pond water level within the water area. The sludge removal equipment at the bottom of the pond, which is set in the vertical part of the elbow set in the above, and the horizontal part of the elbow is connected to the drain pipe.