Sludge taking method and device for sludge lagoon

Abstract

The present application relates to a sludge taking method and device for sludge pool. The bottom of the sludge taking device is provided with a horizontal rotating disc, the center of the rotating disc is provided with a through hole penetrating up and down, the suction pipe of the sludge pump is inserted into and penetrates through the through hole from top to bottom, the bottom surface of the rotating disc is provided with a plurality of sludge plates, the plurality of sludge plates are uniformly distributed along the same circumference with the center of the rotating disc as the center, or are uniformly distributed along several circumferences with the center of the rotating disc as the center and different radii. The sludge taking method uses the above-mentioned sludge taking device, in the process of the sludge pump sucking sludge, through the rotation of the rotating disc, the sludge plates are used to disturb the sludge within a certain range around the suction pipe, so that the sludge flows to the vicinity of the suction port of the suction pipe, and the suction range is expanded. The present application can realize continuous sludge taking in the region, and effectively improve the working efficiency of sludge taking.

Description

Technical Field

[0001] This invention relates to a method for removing sludge from sludge ponds and a sludge removal device for sludge ponds that can be used for such a method, belonging to the field of environmental protection equipment technology. Background Technology

[0002] Traditional sludge removal devices for sludge ponds mainly consist of a float and a sludge pump. The sludge pump is fixedly mounted on the float, with its suction pipe positioned vertically or inclined downwards. The suction port of the suction pipe is located below the float. In operation, the device is placed in the sludge pond and floats on the sludge surface via the float. A high-pressure water jet is used to agitate the sludge near the device, creating a slurry suitable for pumping. The pump then draws this slurry. However, due to the viscosity and poor flowability of sludge, traditional devices often only remove the sludge / slurry near the suction port, leaving the surrounding sludge unable to flow to the port and forming a pool, severely hindering sludge removal efficiency. Furthermore, traditional devices lack a self-propelled mechanism. After removing sludge from one area of ​​the sludge pond, manual labor is required to move the device to another area using a cable. It is time-consuming, laborious, and dangerous, and can easily leave blind spots for pulling. Summary of the Invention

[0003] To overcome the above-mentioned defects of the prior art, the present invention provides a method and apparatus for removing sludge from a sludge pond, which can disturb the sludge within a certain range around the suction pipe of the sludge pump, causing it to flow to the vicinity of the suction port of the suction pipe, thereby achieving continuous sludge removal and effectively improving sludge removal efficiency.

[0004] The technical solution of the present invention to achieve the above-mentioned objective is as follows: a method for removing sludge from a sludge pond, wherein the bottom of the sludge removal device is provided with a horizontal turntable, and the center of the turntable is provided with a through hole running vertically through it. The suction pipe of the sludge pump is inserted from top to bottom and passes through the through hole. The bottom surface of the turntable is provided with multiple mud-pulling plates, which are evenly distributed along the same circumference with the center of the turntable as the center, or evenly distributed along several circumferences with different radii with the center of the turntable as the center. During the process of the sludge pump sucking up sludge, the rotation of the turntable can disturb the sludge in a certain range around the suction pipe of the sludge pump, causing it to flow to the vicinity of the suction port of the suction pipe.

[0005] Preferably, the surface of the mud-removing plate is inclined at 30°-45° in a clockwise or counterclockwise direction (meaning that the surface of the mud-removing plate is inclined at 30°-45° in a clockwise or counterclockwise direction relative to the vertical plane formed by the vertical center line of the mud-removing plate and the axis of the turntable), for example, 30°, 40° or 45°.

[0006] Furthermore, the mud-removing plate is inclined from top to bottom and from outside to inside.

[0007] Preferably, the height of the suction port of the suction pipe protruding from the bottom surface of the turntable is not greater than the vertical height of the mud-removing plate.

[0008] Furthermore, the distance between the suction port of the suction pipe and the bottom surface of the turntable is less than the vertical height of the mud-removing plate.

[0009] Preferably, the mud-removing plate is plate-shaped (flat plate-shaped) and is vertically arranged on the turntable.

[0010] The sludge removal device for the sludge pond can be used as the sludge removal device for any of the sludge removal methods disclosed in this invention. It operates using any of the sludge removal methods disclosed in this invention, including:

[0011] The pontoon is two parallel cylindrical pontoons or one annular pontoon, and a connecting frame is provided between the two cylindrical pontoons or in the annular space of the annular pontoon.

[0012] The base plate is horizontally fixed on the bottom surface of the connecting frame;

[0013] A turntable is horizontally rotatably connected to the bottom surface of the base plate and is equipped with a rotation drive motor;

[0014] A sludge pump is fixedly mounted on the connecting frame or the base plate. The base plate and the turntable have a through hole running vertically through the center. The sludge pump's suction pipe is inserted from top to bottom and passes through the through hole.

[0015] Multiple mud-removing plates are disposed on the bottom surface of the turntable, evenly distributed along the same circumference centered on the center of the turntable, or evenly distributed along several circumferences with different radii centered on the center of the turntable.

[0016] Preferably, the surface of the mud-removing plate is inclined at 30°-45° in a clockwise or counterclockwise direction (meaning that the surface of the mud-removing plate is inclined at 30°-45° in a clockwise or counterclockwise direction relative to the vertical plane formed by the vertical center line of the mud-removing plate and the axis of the turntable), for example, 30°, 40° or 45°.

[0017] Furthermore, the mud-removing plate is inclined from top to bottom and from outside to inside.

[0018] The suction port of the suction pipe is located below the turntable, with a gap between it and the bottom surface of the turntable.

[0019] Preferably, the height of the suction port of the suction pipe protruding from the bottom surface of the turntable is not greater than the vertical height of the mud-removing plate.

[0020] Furthermore, the distance between the suction port of the suction pipe and the bottom surface of the turntable is less than the vertical height of the mud-removing plate.

[0021] Preferably, the mud-removing plate is plate-shaped (flat plate-shaped) and is vertically arranged on the turntable.

[0022] Preferably, the bottom of the mud-removing plate is pointed.

[0023] Preferably, the pontoon or the bottom plate is provided with a travel drive mechanism.

[0024] The propulsion drive mechanism can be a propulsion propeller or a mudwheel, the propulsion propeller or mudwheel being equipped with a drive motor, or the propulsion drive mechanism can be a jet propulsion unit.

[0025] Preferably, the pontoon or the bottom plate is further provided with a steering drive mechanism.

[0026] The steering drive mechanism can be a steering propeller or a mudwheel, the steering propeller or mudwheel being equipped with a drive motor, or the steering drive mechanism can be a jet propulsion system.

[0027] Remote control devices can be installed for the turntable, the sludge pump, the travel drive mechanism, and the steering drive mechanism based on existing technologies.

[0028] Preferably, the outlet of the sludge pump is connected to a sludge conveying pipe.

[0029] The beneficial effects of this invention are:

[0030] 1. Due to the arrangement of the turntable and the mud-dispensing plate, during the process of the sludge pump sucking up sludge, the turntable can be rotated and the mud-dispensing plate can be used to stir (or agitate) the sludge, continuously moving the sludge around the suction pipe to below the center of the turntable, that is, to the vicinity of the suction port of the suction pipe, and then being sucked away by the sludge pump. This achieves continuous sludge removal within the area, effectively improving the efficiency of sludge removal and avoiding the situation where the sludge pump can only suck up the sludge near the suction port of the suction pipe due to the poor fluidity of the sludge, while the sludge around the suction pipe is difficult to flow to the vicinity of the suction port, resulting in an excessively dilute sludge concentration.

[0031] 2. Due to the inclined surface of the mud-dispensing plate, when the turntable rotates along the inclined direction of the mud-dispensing plate (clockwise or counterclockwise), the surface of the mud-dispensing plate applies a thrust perpendicular to the plate surface to the silt in front of its rotation direction. The direction of the thrust is between the tangential direction of the circumference of the mud-dispensing plate and the radial direction of the mud-dispensing plate on the turntable. This facilitates the smooth and rapid dispensing of the silt around the suction pipe to the vicinity of the suction port of the suction pipe. Because the mud-dispensing plate is inclined downwards and inwards on the turntable, when the mud-dispensing plate dispenses the silt, it increases the tendency of the silt to flow inwards and downwards (towards the center of the turntable), which helps the silt to flow smoothly and quickly to the vicinity of the suction port of the suction pipe.

[0032] 3. Due to the setting of the travel drive mechanism, after the sludge removal device completes the sludge removal work in a certain area of ​​the sludge tank, the sludge removal device can be moved to the next area in the sludge tank by controlling the travel drive mechanism (usually controlled by remote control) to carry out the sludge removal work. There is no need for manual pulling of the sludge removal device in the sludge tank by cables, which saves time and effort, has high safety, eliminates dead corners in sludge removal, and helps to improve work efficiency. Attached Figure Description

[0033] Figure 1 This is a top view of one embodiment of the mud-collecting device of the present invention;

[0034] Figure 2 yes Figure 1 A bottom view;

[0035] Figure 3 yes Figure 1 Side view;

[0036] Figure 4 This is a top view of another embodiment of the mud-collecting device of the present invention;

[0037] Figure 5 yes Figure 4 A bottom view;

[0038] Figure 6 yes Figure 4 Side view. Detailed Implementation

[0039] All directional indications (e.g., up, down, front, back, top, bottom, inside, outside, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship between the components in a certain specific posture (as shown in the figure) and do not constitute a limitation on the actual use direction. If the specific posture changes, the directional indication will also change accordingly.

[0040] This invention discloses a method for removing sludge from a sludge pond. Using any of the sludge removal devices disclosed in this invention as its sludge removal apparatus, the sludge is removed from the sludge pond via the sludge removal device and its associated sludge pump. The bottom of the sludge removal device has a horizontal turntable with a through hole running vertically through its center. The suction pipe of the sludge pump is inserted from top to bottom through the through hole, with its suction port located below the turntable. Multiple sludge-dispensing plates are provided on the bottom surface of the turntable. These plates are either evenly distributed along the same circumference centered on the turntable, or evenly distributed along several circumferences of different radii centered on the turntable. In the application of the sludge removal device, the mud-pushing plate is inserted downwards into the sludge. During the sludge pump's suction of the sludge, the rotation of the turntable uses the mud-pushing plate to continuously move the sludge around the suction pipe to below the center of the turntable, that is, to the vicinity of the suction port of the suction pipe, and then the sludge is pumped away by the sludge pump. This achieves continuous sludge removal within the area, effectively improving the efficiency of sludge removal and avoiding the situation where the sludge pump can only pump away the sludge near the suction port of the suction pipe due to the poor fluidity of the sludge, while the sludge around the suction pipe is difficult to flow to the vicinity of the suction port, resulting in an excessively dilute sludge concentration.

[0041] The surface of the mud-dispensing plate is preferably inclined at 30°-45° in a clockwise or counterclockwise direction (meaning the surface of the mud-dispensing plate is inclined at 30°-45° relative to the vertical plane formed by the vertical center line of the mud-dispensing plate and the axis of the turntable), for example, 30°, 40°, or 45°. With this configuration, when the turntable rotates along the inclined direction (clockwise or counterclockwise) of the mud-dispensing plate, the surface of the mud-dispensing plate applies a thrust perpendicular to the surface of the plate to the silt in front of its rotation direction. The direction of the thrust is between the tangent direction of the circumference of the mud-dispensing plate and the radial direction of the mud-dispensing plate on the turntable, which facilitates the smooth and rapid dispensing of the silt around the suction pipe to the vicinity of the suction port of the suction pipe.

[0042] The mud-dispensing plate is preferably inclined from top to bottom and from outside to inside on the bottom surface of the turntable. When the mud-dispensing plate dispenses the sludge, it can increase the tendency of the sludge to flow inward and downward (towards the center of the turntable), which helps the sludge to flow smoothly and quickly to the vicinity of the suction port of the suction pipe.

[0043] The height of the suction port of the suction pipe protruding from the bottom surface of the turntable is no greater than the vertical height of the mud-dispelling plate, and preferably less than the vertical height of the mud-dispelling plate. This helps the mud-dispelling plate to move the silt around the suction pipe to below the suction port, making it easier to suck up the silt.

[0044] The mud-removing plate is typically plate-shaped (flat) and is vertically mounted on the turntable.

[0045] See Figure 1-6 The present invention also discloses a sludge removal device for a sludge pond using the aforementioned sludge removal method, comprising a float 1, a bottom plate 2, a turntable 3, and a sludge pump 4. The floats are either two parallel cylindrical floats or one annular float, used to support the sludge removal device floating on the sludge surface within the sludge pond. A connecting frame 5 is provided between the two cylindrical floats or within the annular space of the annular float. The connecting frame can be a frame structure made of a rigid material, such as stainless steel, aluminum alloy, or plastic steel. Preferably, the connecting frame is horizontally connected to the vertical center of the floats. The bottom plate is horizontally fixed to the bottom surface of the connecting frame, and the bottom plate can be square or circular. The turntable is circular and horizontally rotatably connected to the bottom surface of the base plate (e.g., via bearings). The turntable is equipped with a rotation drive motor for driving its rotation. When the base plate is square, the diameter of the turntable is smaller than the distance between two opposite sides of the base plate, and the turntable is concentrically connected to the base plate. When the base plate is circular, the diameter of the turntable is smaller than the diameter of the base plate, and the turntable is coaxially connected to the base plate. The materials of the base plate and the turntable can be the same as the material of the connecting frame. The bottom surface of the turntable is not lower than the lowest point of the outer wall of the pontoon, and is usually higher than the lowest point of the outer wall of the pontoon. The base plate and the turntable have a through hole 6 that runs vertically through and connects to each other. The sludge pump is fixedly mounted on the connecting frame or the base plate, usually on the top surface of the connecting frame or the base plate. The suction pipe 7 of the sludge pump is inserted from top to bottom and passes through the through hole. The suction pipe can be inserted vertically or at an angle through the through hole. The suction port of the suction pipe is located below the turntable, with a gap between it and the bottom surface of the turntable, and its position is lower than the lowest point of the outer wall of the float. When the sludge removal device floats on the surface of the sludge in the sludge tank, the suction port of the suction pipe can be inserted into the sludge to suck up the sludge. The bottom surface of the turntable is provided with vertical mud-dispensing plates 8. The mud-dispensing plates are plate-shaped (flat), and there are multiple mud-dispensing plates. The multiple mud-dispensing plates are evenly distributed along the same circumference with the center of the turntable as the center, or evenly distributed along several circumferences with different radii with the center of the turntable as the center. The bottom edge of the mud-dispensing plate is lower than the lowest point of the outer wall of the float. When the mud-collecting device floats on the surface of the silt, the mud-dispensing plate can be inserted downward into the silt. During the process of the sludge pump sucking up the silt, the turntable can be driven to rotate, and the mud-dispensing plates can be used to stir (or agitate) the silt. The silt around the suction pipe is continuously moved to the area below the center of the turntable, that is, to the vicinity of the suction port of the suction pipe, and then sucked away by the sludge pump, thereby realizing the continuous mud collection in the area.

[0046] The surface of the mud-removing plate is preferably inclined at 30°-45° in a clockwise or counterclockwise direction (meaning that the surface of the mud-removing plate is inclined at 30°-45° in a clockwise or counterclockwise direction relative to the vertical plane formed by the vertical center line of the mud-removing plate and the axis of the turntable), for example, 30°, 40° or 45°.

[0047] The plurality of mud-removing plates are preferably distributed along several circles of different radii centered on the bottom surface of the turntable (the mud-removing plates distributed along the circles should avoid interference with the suction pipe during the arrangement process), for example, along two or three circles centered on the center of the turntable. The mud-removing plates on each circle are evenly arranged on the circle, and among the mud-removing plates on two adjacent circles, the inclination angle (in the clockwise or counterclockwise direction) of the mud-removing plate on the inner circle is greater than the inclination angle of the mud-removing plate on the outer circle. For example, the inclination angle of the mud-removing plate on the inner circle is 45°, and the inclination angle of the mud-removing plate on the outer circle is 30°. Among the mud-removing plates on two adjacent circles, the height of the mud-removing plate on the outer circle protruding from the bottom surface of the turntable is preferably greater than the height of the mud-removing plate on the inner circle protruding from the bottom surface of the turntable. Multiple mud-dispensing plates can also be arranged in an arc-shaped spiral on the bottom surface of the turntable, from the outside in (towards the center of the turntable). With this arrangement, when the turntable rotates along the inclined direction of the mud-dispensing plates, the mud-dispensing plates on the circumference can gradually move the silt around the suction pipe towards the center of the turntable (near the suction port of the suction pipe) in layers, avoiding any interruption or discontinuity in the flow of silt during the mud-dispensing process, thus preventing any impact on the efficiency of mud removal.

[0048] The mud-removing plate is preferably inclined from top to bottom and from outside to inside on the bottom surface of the turntable.

[0049] The height of the suction port of the suction pipe protruding from the bottom surface of the turntable is no greater than the vertical height of the mud-dispelling plate, and preferably less than the vertical height of the mud-dispelling plate. This arrangement helps the mud-dispelling plate to move the silt around the suction pipe to below the suction port, making it easier to suck up the silt.

[0050] The bottom of the mud-removing plate is preferably pointed, which makes it easier for the mud-removing plate to be inserted into the silt. This avoids the mud-removing plate being difficult to insert due to the silt being too viscous, which would cause the mud-removing plate to support the main body of the mud-removing device on the viscous silt and prevent the mud-removing work from being carried out smoothly.

[0051] The mud-dispelling plate can also be in the shape of an arc, with the direction of its arc apex opposite to its clockwise or counterclockwise tilt direction. This helps to dispel the silt inward and reduce the tendency and amount of silt to flow outward during the dispelling process.

[0052] Preferably, the bottom surface of the turntable is provided with a vertically downward-extending annular protective cover or net. The mud-dispensing plate is located inside the protective cover or net (within the annular space of the protective cover or net), and the height of the protective cover or net protruding from the bottom surface of the turntable is greater than the height of the mud-dispensing plate protruding from the bottom surface of the turntable. This arrangement can protect the mud-dispensing plate and prevent it from being damaged by contact with the bottom.

[0053] Preferably, the pontoon or the bottom plate is equipped with a travel drive mechanism, which can be a propeller or mud wheel 9, and the propeller or mud wheel is equipped with a drive motor. Alternatively, the travel drive mechanism can be a jet propulsion unit, which is equipped with an air source, which can be a compressed air tank. The air source is usually located outside the sludge tank and connected to the jet propulsion unit via an air pipe. The travel drive mechanism can also be other existing drive mechanisms suitable for propelling the sludge removal device across the sludge surface. With this configuration, after the sludge removal device completes sludge removal in a certain area of ​​the sludge tank, the travel drive mechanism can be controlled (usually remotely) to move the sludge removal device to the next area in the sludge tank to carry out sludge removal work. This eliminates the need for manual pulling of the sludge removal device with ropes, saving time and effort, ensuring high safety, eliminating blind spots in sludge removal, and improving work efficiency.

[0054] Preferably, the pontoon or the bottom plate is provided with a steering drive mechanism. The steering drive mechanism is preferably the same as the travel drive mechanism, such as a propeller, mud wheel, or jet propulsion. When the steering drive mechanism is a steering propeller or mud wheel 10, the axle of the steering propeller or mud wheel can be perpendicular to the axle of the travel propeller. When the steering drive mechanism is a jet propulsion, the jet propulsion direction of the jet propulsion used for steering the mud-collecting device can be perpendicular to the jet propulsion direction of the jet propulsion used for traveling the mud-collecting device.

[0055] Based on existing technology, remote control devices can be set up for the turntable, the sludge pump, the travel drive mechanism and the steering drive mechanism to facilitate remote control of the sludge removal operation by the staff.

[0056] The outlet of the sludge pump can be connected to a sludge conveying pipe for transporting the sludge pumped by the sludge pump to the target location. The sludge conveying pipe is usually a flexible hose.

[0057] Unless otherwise specified or further limited to one preferred or optional technical means being another, the preferred and optional technical means disclosed in this invention can be arbitrarily combined to form several different technical solutions.

Claims

1. A method of taking sludge from a sludge lagoon, characterized in that The bottom of the sludge taking device is provided with a horizontal rotating disc, the center of the rotating disc is provided with a through hole penetrating from top to bottom, a suction pipe of a sludge pump is inserted into and penetrates through the through hole from top to bottom, the bottom surface of the rotating disc is provided with a plurality of sludge pushing plates, the plurality of sludge pushing plates are uniformly distributed along a plurality of circumferences with different radii and with the center of the rotating disc as the center, or the plurality of sludge pushing plates are arranged in an arc spiral shape from outside to inside on the bottom surface of the rotating disc, the sludge pushing plates are arranged in a slope from top to bottom and from outside to inside on the bottom surface of the rotating disc, and in the sludge pushing plates on the adjacent two circumferences, the inclination angle of the plate surface of the sludge pushing plate on the inner side circumference is greater than the inclination angle of the plate surface of the sludge pushing plate on the outer side circumference, in the sludge pushing plates on the adjacent two circumferences, the height of the sludge pushing plate on the outer side circumference protruding from the bottom surface of the rotating disc is greater than the height of the sludge pushing plate on the inner side circumference protruding from the bottom surface of the rotating disc, the sludge pushing plate is in an arc shape, the direction of the arc top is opposite to the direction of the clockwise or counterclockwise inclination, in the process of the sludge pump sucking sludge, through the rotation of the rotating disc, the sludge around the suction pipe is continuously pushed to the vicinity of the suction port of the suction pipe by the sludge pushing plate, and then is sucked away by the sludge pump, so that the continuous sludge taking in the region is realized, the plate surface of the sludge pushing plate applies a thrust perpendicular to the plate surface to the sludge in front of the rotation direction of the sludge pushing plate during the rotation, the direction of the thrust is between the tangent direction of the circumference where the sludge pushing plate is located and the radial direction of the sludge pushing plate on the rotating disc, so that the situation that the sludge pump can only suck away the sludge near the suction port of the suction pipe due to the poor flowability of the sludge, and the sludge around the suction pipe is difficult to flow to the vicinity of the suction port, and the sludge taking concentration is too dilute, is avoided.

2. The method of claim 1, wherein The plate surface of the sludge pushing plate is inclined by 30-45 degrees in the clockwise or counterclockwise direction.

3. The method of claim 1 or 2, wherein The height of the suction port of the suction pipe protruding from the bottom surface of the rotating disc is not greater than the vertical height of the sludge pushing plate.

4. A sludge taking device for sludge lagoons, characterized in that It comprises: a float, which is two parallel columnar floats or one annular float, a connecting frame is arranged between the two columnar floats or in the annular space of the annular float; a bottom plate, which is horizontally fixed on the bottom surface of the connecting frame; a rotating disc, which is horizontally connected to the bottom surface of the bottom plate and is provided with a rotating drive motor; a sludge pump, which is fixed on the connecting frame or the bottom plate, a through hole penetrating from top to bottom is arranged in the center of the bottom plate and the rotating disc, and a suction pipe of the sludge pump is inserted into and penetrates through the through hole from top to bottom; The number of the mud plates is multiple, which are arranged on the bottom surface of the rotating disc. The multiple mud plates are uniformly distributed along several circumferences with different radii and the center of the rotating disc as the center, or the multiple mud plates are arranged in an arc spiral shape from outside to inside on the bottom surface of the rotating disc. The mud plates are arranged in a slope manner from top to bottom and from outside to inside on the bottom surface of the rotating disc. In the two adjacent circumferences, the inclination angle of the plate surface of the mud plate on the inner circumference is greater than that of the mud plate on the outer circumference. In the two adjacent circumferences, the height of the mud plate on the outer circumference protruding from the bottom surface of the rotating disc is greater than that of the mud plate on the inner circumference. The mud plate is in an arc shape, the direction of the arc top is opposite to the direction of the slope along the clockwise or counterclockwise direction. When rotating, the plate surface of the mud plate applies a thrust force perpendicular to the plate surface to the sludge in front of the rotating direction of the plate surface. The direction of the thrust force is between the tangent direction of the circumference where the mud plate is located and the radial direction of the mud plate on the rotating disc.

5. The sludge collecting device of the sludge pool according to claim 4, wherein The plate surface of the mud plate is inclined by 30-45 degrees along the clockwise or counterclockwise direction.

6. A sludge removal device for a lagoon according to any one of claims 4-5, characterized in that The floating barrel or the bottom plate is provided with a traveling driving mechanism.

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