CN107090902B

CN107090902B - Pond mud-discharging dredging device

Info

Publication number: CN107090902B
Application number: CN201710364613.7A
Authority: CN
Inventors: 金玉涛; 刘万; 郝华磊; 王文刚; 梁柯冰
Original assignee: Handan Ruida Kinetic Energy Co ltd; Hangang Group Hanbao Iron and Steel Co Ltd
Current assignee: Handan Ruida Kinetic Energy Co ltd; Hangang Group Hanbao Iron and Steel Co Ltd
Priority date: 2017-05-22
Filing date: 2017-05-22
Publication date: 2022-11-04
Anticipated expiration: 2037-05-22
Also published as: CN107090902A

Abstract

A device for discharging and dredging sludge in a water pool comprises a siphon, a vacuum pump, a slurry pump, a sludge discharge pipe and a sludge collection barrel with the height larger than the water depth of the water pool, wherein the sludge collection barrel is arranged in the water pool needing dredging; the siphon comprises an upper water pipe positioned outside the sludge collecting barrel and a lower water pipe positioned inside the sludge collecting barrel, the upper ends of the upper water pipe and the lower water pipe are connected and then connected with an air suction port of a vacuum pump through a valve, the lower end of the upper water pipe is opposite to sludge at the bottom of the reservoir, and the lower end of the lower water pipe extends to the bottom of the sludge collecting barrel; the slurry pump is placed in the slurry collecting barrel, the head end of the slurry discharge pipe is connected with the slurry discharge port of the slurry pump, and the tail end of the slurry discharge pipe is located outside the reservoir. The invention uses the siphon to suck the mud at the bottom of the reservoir into the mud collecting barrel, and then uses the slurry pump in the mud collecting barrel to discharge the mud. The device is used for discharging mud without emptying the water tank, so that the normal use of the water storage tank is not influenced. In addition, the invention also has the advantages of simple structure, low cost, convenient operation and the like, and has great popularization value.

Description

Pond mud-discharging and dredging device

Technical Field

The invention relates to a device capable of removing sludge at the bottom of a reservoir under the condition of not influencing the normal use of the reservoir, belonging to the technical field of water treatment equipment.

Background

The bottom of structures such as a reservoir of industrial water, a water pump suction well and the like can accumulate sludge and sediments after the structures are used for a period of time, the cleaning method is generally that the structures are cleaned manually or mechanically after the reservoir is emptied, if the speed of the sludge accumulation in the reservoir is too high, the cleaning period is shorter than the production stop fixed maintenance period, or the reservoir is difficult to have the opportunity of stopping water, the normal use of the reservoir can be influenced during cleaning, and therefore, the device for cleaning the sludge at the bottom of the reservoir is very necessary under the condition that the normal use of the reservoir is not influenced.

Disclosure of Invention

The invention aims to provide a pool sludge discharging and dredging device which does not influence the normal use of a reservoir, aiming at the defects of the prior art.

The problem of the invention is realized by the following technical scheme:

a device for discharging and dredging sludge in a water pool comprises a siphon, a vacuum pump, a slurry pump, a sludge discharge pipe and a sludge collection barrel with the height larger than the water depth of the water pool, wherein the sludge collection barrel is arranged in the water pool needing dredging; the siphon comprises an upper water pipe positioned outside the sludge collecting barrel and a lower water pipe positioned inside the sludge collecting barrel, the upper ends of the upper water pipe and the lower water pipe are connected and then connected with an air suction port of a vacuum pump through a valve, the lower end of the upper water pipe is opposite to sludge at the bottom of the reservoir, and the lower end of the lower water pipe extends to the bottom of the sludge collecting barrel; the slurry pump is placed in the slurry collecting barrel, the head end of the slurry discharge pipe is connected with the slurry discharge port of the slurry pump, and the tail end of the slurry discharge pipe is located outside the reservoir.

According to the device for discharging sludge and dredging in the water tank, the lower end of the upper water pipe is provided with the downward water inlet bell mouth, the upper-lower radius ratio of the water inlet bell mouth is 1:2-1:5, and the height of the water inlet bell mouth is 1-3 times of the radius of the upper water pipe.

Above-mentioned pond sludge discharge desilting device, the downcomer is vertical pipe, the contained angle of upper hose and vertical direction is 15 ~ 30.

In the device for removing mud and dredging in the water tank, 2-4 sewer pipes and 4 water supply pipes of the siphon are arranged.

Above-mentioned pond mud discharging sediment removal device, the difference of the height of collection mud bucket and the cistern depth of water is less than or equal to 7.0m.

Above-mentioned pond mud discharging desilting device, the distance of horn mouth to cistern bottom of intaking is 500mm, the downcomer is 500mm to the distance of album mud bucket bottom.

According to the device for discharging and dredging the sludge in the water pool, the cross section of the sludge collecting barrel is rectangular, and the length of the short side of the rectangle is larger than or equal to the product of the inner diameter of the sewer pipe and the number of the sewer pipes.

In the device for discharging and dredging the sludge in the water pool, the cross section of the sludge collecting barrel is circular, and the inner diameter of the sludge collecting barrel is larger than or equal to the product of the inner diameter of the sewer pipe and the number of the sewer pipes.

The invention uses the siphon to suck the slurry at the bottom of the reservoir into the slurry collecting barrel, and then uses the slurry pump in the slurry collecting barrel to discharge the slurry. The device is used for discharging mud without emptying the water tank, so that the normal use of the water storage tank is not influenced. In addition, the invention also has the advantages of simple structure, low cost, convenient operation and the like, and has great popularization value.

Drawings

The invention will be further described with reference to the accompanying drawings.

FIG. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic representation of the use of the present invention.

The reference numbers in the figures are: 1. the device comprises a water inlet bell mouth, 2, a water feeding pipe, 3, a water discharging pipe, 4, a mud collecting barrel, 5, a vacuum pump, 6, a slurry pump, 7, a valve, 8, a reservoir, 9, a mud conveying vehicle, 10 and a mud discharging pipe.

Detailed Description

The invention provides a water tank sludge discharging and dredging device, which can realize the non-stop water cleaning of sludge deposition of structures such as a water collecting tank, a water storage tank and the like which have high requirements on the quality of discharged water and have no sludge discharging facilities, can discharge the sludge uniformly and efficiently, is suitable for a deep water tank with the water depth of more than 3.5 meters, has the water content of the discharged sludge of 95-99 percent, and can realize sludge-water separation through further dehydration, drying and other treatments.

Referring to fig. 1, the invention mainly comprises a siphon, a mud collecting barrel 4, a vacuum pump 5, a slurry pump 6, a valve 7 and a mud pipe 10, wherein the siphon comprises an upper water pipe 2 and a lower water pipe 3 which are connected with each other, and the lower end of the upper water pipe 2 is provided with a water inlet bell mouth 1.

The water inlet bell mouth 1 is a steel bell mouth with a small upper part and a big lower part, the ratio of the upper radius to the lower radius is 1:2-1:5, the height is 1-3 times of the radius of the upper mouth (namely the radius of the water feeding pipe), and the water inlet bell mouth is used for collecting sludge at the bottom of the pool and keeping the flow rate of the upward-suction sludge smooth. The upper-lower radius ratio of the bell mouth in the embodiment is 1:3, the height is 2 times of the radius of the water feeding pipe, and the radius of the water feeding pipe is 25mm.

The upper water pipe 2 and the lower water pipe 3 are steel pipelines, wherein the lower water pipe 3 is a vertical pipe, the included angle between the upper water pipe 2 and the vertical direction is 15-30 degrees, the inclined direction is that the upper water pipe 2 and the lower water pipe 3 are gradually far away from the sludge collecting barrel 4 from top to bottom, the upper water pipe 2 and the upper end of the lower water pipe 3 are connected in a welding mode, and the air tightness requirement is strict. In the embodiment, the distance between the upper water pipe 2 and the lower water pipe 3 and the bottom of the tank is 500mm, the upper part of the upper water pipe is 300mm higher than the upper edge of the sludge collecting barrel, and the upper water pipe and the sludge collecting barrel are connected by a bracket.

The cross section of the mud collecting barrel 4 is circular or rectangular, the wall of the steel barrel is tight and waterproof, and the height of the mud collecting barrel in the embodiment is 5.5m. The water depth of the reservoir is 5.0m.

The vacuum pump 5 is used for exhausting and lifting water for the siphon before the equipment is put into operation so as to ensure that no air exists in the upper water pipe 2 and the lower water pipe 3, and a valve 7 on an air inlet pipe of the vacuum pump 5 is required to be airtight. In practical application, the irrigation pipe and the bottom valve can replace the vacuum pump.

The type of the slurry pump 6 is matched with the sludge lifting amount of the siphon, and the flow rate of the slurry pump 6 is 10% -20% of the maximum sludge lifting amount of the siphon, so that the phenomenon that the liquid level in the sludge collection barrel is lowered too fast to cause the sewer pipe to expose the liquid level and enter air is avoided. The slurry pump can be optionally additionally provided with variable frequency control. The pump package selected in this embodiment is a submerged slurry pump with a frequency conversion device.

The working process of the invention is as follows:

the mud collecting barrel is sunk by pre-watering in the mud collecting barrel, and after the mud collecting barrel is sunk to the bottom of the pool, the water inlet bell mouth at the lower end of the upper water pipe is arranged at a proper position at the bottom of the pool. The vacuum pump is started to pump air, the siphon is closed tightly after being filled with water, the vacuum pump is rapidly stopped, the slurry pump is started, the liquid level in the sludge collection barrel is reduced, when the height difference of the inner liquid level and the outer liquid level of the sludge collection barrel reaches the siphon requirement, the siphon starts to pump sludge at the bottom of the reservoir into the sludge collection barrel, and then the sludge entering the sludge collection barrel is discharged out through the slurry pump, so that the non-stop and non-blind area desilting of the water tank is realized.

Claims

1. A device for discharging sludge and dredging in a water pool is characterized by comprising a siphon, a vacuum pump (5), a slurry pump (6), a sludge discharge pipe (10) and a sludge collection barrel (4) with the height larger than the water depth of a water reservoir, wherein the sludge collection barrel (4) is arranged in the water reservoir (8) needing dredging; the siphon comprises an upper water pipe (2) positioned outside the sludge collection barrel (4) and a lower water pipe (3) positioned inside the sludge collection barrel (4), the upper ends of the upper water pipe and the lower water pipe are connected and then connected with an air suction port of the vacuum pump (5) through a valve (7), the lower end of the upper water pipe (2) is opposite to sludge at the bottom of the reservoir (8), and the lower end of the lower water pipe (3) extends to the bottom of the sludge collection barrel (4); the slurry pump (6) is placed in the slurry collecting barrel (4), the head end of the slurry discharge pipe (10) is connected with a slurry discharge port of the slurry pump (6), and the tail end of the slurry discharge pipe is positioned outside the reservoir (8); the slurry pump (6) is matched with the slurry lifting amount of the siphon, and the flow of the slurry pump (6) is 10-20% of the maximum slurry lifting amount of the siphon.

2. The pond sludge discharging and dredging device as claimed in claim 1, wherein the lower end of the upper water pipe (2) is provided with a downward water inlet bell mouth (1), the upper-lower radius ratio of the water inlet bell mouth (1) is 1:2-1:5, and the height is 1-3 times of the radius of the upper water pipe (2).

3. The device for removing sludge in a water pool as claimed in claim 1 or 2, wherein the lower water pipe (3) is a vertical pipe, and the included angle between the upper water pipe (2) and the vertical direction is 15-30 degrees.

4. A pond sludge discharge and dredging device according to claim 3, wherein 2-4 sewer pipes (3) and upper pipes (2) of the siphon are arranged.

5. A pond sludge discharge and dredging device according to claim 4, characterized in that the difference between the height of the sludge collecting barrel (4) and the depth of the reservoir water is less than or equal to 7.0m.

6. The device for removing sludge in a water pool as claimed in claim 2, wherein the distance from the water inlet bell mouth (1) to the bottom of the water pool is 500mm, and the distance from the sewer pipe (3) to the bottom of the sludge collecting barrel (4) is 500mm.

7. The device for removing the sludge in the water pool according to claim 6, wherein the cross section of the sludge collecting barrel (4) is a rectangle, and the length of the short side of the rectangle is greater than or equal to the product of the inner diameter of the downcomer (3) and the number of the downcomers (3).

8. The device for removing sludge in a water pool as claimed in claim 6, wherein the cross section of the sludge collecting barrel (4) is circular, and the inner diameter of the sludge collecting barrel is greater than or equal to the product of the inner diameter of the sewer pipes (3) and the number of the sewer pipes (3).