Low-disturbance well water tank sludge cleaning device and water tank cleaning method

Abstract

This invention discloses a low-disturbance underground water tank mud cleaning device. The device includes a frame, a traveling assembly, a first housing, a cleaning assembly, a suction assembly, and a first plate. The traveling assembly is connected to the frame. The first housing is connected to the frame body, and a working chamber is located on the side of the first housing near the bottom of the water tank. Both the cleaning assembly and the suction assembly are connected to the first housing. The cleaning assembly is located at the front end of the working chamber, and the suction assembly is located at the rear end of the working chamber. The first plate is located between the cleaning assembly and the suction assembly. One end of the first plate is hinged to the first housing, and an adjustment assembly is located between the other end of the first plate and the first housing. This low-disturbance underground water tank mud cleaning device can reduce disturbance to the mud in the water tank, improve the mud cleaning effect, reduce the water content of the mud, facilitate subsequent mud transportation, and reduce the power requirements of the suction equipment.

Description

Technical Field

[0001] This invention belongs to the technical field of underground equipment in coal mines, specifically relating to a low-disturbance underground water tank mud cleaning device and water tank cleaning method. Background Technology

[0002] Coal mine underground water tanks play an important role in preventing mine flooding. As the gushing water carries a large amount of solid particles such as coal slurry and slag into the water tank, the effective water storage capacity of the underground water tank gradually decreases. Therefore, it is necessary to clean the solid matter accumulated in the water tank regularly to avoid the water tank being unable to be put into use in time under the condition of large water inflow, which would directly threaten the safe production of the mine.

[0003] In related technologies, cleaning equipment directly sucks up the coal slime deposited at the bottom of the water tank or sucks it up after collection. Because the suction port is in a relatively open position, it causes significant disturbance to the slime. If the travel speed of the cleaning equipment and the suction speed are mismatched, it can easily lead to direct suction of water, affecting subsequent slime transportation. Furthermore, because the slime contains fine-particle coal slime that adheres to the bottom of the water tank, high-powered suction equipment is required for operation, placing high demands on the underground equipment. Summary of the Invention

[0004] The present invention aims to at least partially solve one of the technical problems in the related art.

[0005] Therefore, embodiments of the present invention propose a low-disturbance downhole water tank mud cleaning device, which can reduce disturbance to the mud in the water tank, improve the mud cleaning effect, reduce the water content of the mud, facilitate the subsequent transportation of the mud, and reduce the power requirements of the suction equipment.

[0006] An embodiment of the present invention also proposes a method for cleaning a water tank.

[0007] A low-disturbance downhole water tank mud cleaning device according to an embodiment of the present invention includes:

[0008] frame;

[0009] A walking assembly is connected to the frame and is used to drive the frame to move within the water tank;

[0010] A first housing, which is connected to the frame, has a working chamber on the side of the first housing near the bottom of the water tank;

[0011] The machine includes a shoveling assembly and a suction assembly, both of which are connected to the first housing. In the traveling direction of the frame, the shoveling assembly is located at the front end of the working chamber and is used to excavate the mud and sludge at the bottom of the water tank so that the mud and sludge are removed from the bottom of the water tank. The suction assembly is located at the rear end of the working chamber and is used to clean out the mud and sludge in the working chamber.

[0012] A first plate is disposed in the working chamber and is located between the cleaning assembly and the suction assembly. One end of the first plate is hinged to the first housing, and the other end of the first plate has an adjustment assembly between it and the first housing. The adjustment assembly is used to adjust the angle between the first plate and the first housing.

[0013] The low-disturbance downhole water tank mud cleaning device of the present invention can reduce disturbance to the mud in the water tank, improve the mud cleaning effect, reduce the water content of the mud, facilitate the subsequent transportation of the mud, and reduce the power requirements of the suction equipment.

[0014] In some embodiments, the working chamber includes a first chamber, and the excavation assembly is disposed within the first chamber. The excavation assembly includes:

[0015] A first rotating shaft is located in the first interior chamber, and both ends of the first rotating shaft are hinged to the first housing.

[0016] Multiple material teeth, the multiple material teeth are divided into multiple material tooth groups, each material tooth group includes multiple material teeth arranged axially spaced along the first rotating shaft, and the multiple material tooth groups are arranged circumferentially spaced along the first rotating shaft.

[0017] A first driving unit is disposed on the first housing and is connected to the first rotating shaft via a transmission.

[0018] In some embodiments, at least a portion of the toothed teeth in the toothed tooth assembly includes a first rod and a second rod, the first rod extending radially along the first rotating shaft and having one end connected to the first rotating shaft, the other end of the first rod connected to the middle of the second rod, the second rod extending axially along the first rotating shaft, and the second rods of a plurality of teeth in the same toothed tooth assembly being spaced apart; and / or

[0019] At least a portion of the toothed gear assembly includes a third rod and a fourth rod. The third rod extends radially along the first rotating shaft, with one end connected to the first rotating shaft and the other end connected to the middle of the fourth rod. The fourth rod extends axially along the first rotating shaft. The fourth rods of multiple teeth in the same toothed gear assembly are coaxial and connected end-to-end; and / or

[0020] The tooth assembly includes multiple first tooth assemblies and multiple second tooth assemblies, wherein the tooth dimension in the first tooth assemblies in the radial direction of the first rotating shaft is larger than the tooth dimension in the second tooth assemblies in the radial direction of the first rotating shaft; and / or

[0021] Some of the teeth in the tooth group are offset from at least one other group of teeth in the tooth group in the circumferential direction of the first rotating shaft.

[0022] In some embodiments, the working chamber includes a second chamber having a rear baffle at one end of the second chamber remote from the cleaning assembly, and the suction assembly includes:

[0023] Multiple second plates are spaced apart along a first direction to form multiple material collection cavities in the second chamber. The cross-sectional area of ​​the material collection cavities gradually decreases from one end closer to the cleaning assembly to the end farther away from the cleaning assembly. The first direction is perpendicular to the travel direction of the frame.

[0024] Multiple suction pipes are connected to the first housing, and the suction ports of the multiple suction pipes are connected to the multiple collection chambers one by one. The suction ports are connected to the end of the collection chamber away from the cleaning component.

[0025] In some embodiments, the suction assembly further includes a material conveying component, which includes a second housing, a material conveying screw, and a second driving part. The second housing is connected to the first housing, the material conveying screw is rotatably connected inside the second housing, and the second driving part is disposed on the second housing and is drively connected to the material conveying screw.

[0026] The second housing has a feed end and a discharge end. The feed end is connected to the collection chamber, and the discharge end is connected to the suction port of the suction pipe.

[0027] In some embodiments, the inner diameter of the second housing gradually decreases from the feed end to the discharge end, and the conveying screw is a variable diameter screw.

[0028] In some embodiments, the working chamber includes a third chamber disposed between the first chamber and the second chamber, and the first plate is disposed in the third chamber;

[0029] The adjustment assembly includes a third drive unit, which is disposed on the first housing. The actuating end of the third drive unit is connected to the first plate to drive the first plate to reciprocate relative to the first housing.

[0030] In some embodiments, a third plate is further included, one end of which is hinged to the first housing, and the other end of which is provided with an elastic element between itself and the first housing. The hinged end of the first plate and the first housing is disposed near the cleaning assembly, and the hinged end of the third plate and the first housing is disposed near the suction assembly; and / or

[0031] The third chamber has a conical end away from the bottom of the water tank, and the end of the third chamber away from the bottom of the water tank has a connecting opening; and / or

[0032] The first plate is provided with a plurality of first through holes; and / or

[0033] The first housing has a plurality of second through holes on the side wall corresponding to the third chamber.

[0034] In some embodiments, the traveling assembly includes a traveling frame, track wheels, and a traveling drive unit. The track wheels are mounted on the frame, the traveling frame is positioned above the water tank, the traveling frame has a track, the track wheels are supported on the track and movable along the track, the traveling drive unit is mounted on the traveling frame, and the traveling drive unit is kinetically connected to the track wheels to drive the frame to travel on the track; and / or

[0035] The low-disturbance downhole water tank sludge cleaning device further includes a lifting assembly, which is disposed between the frame and the first housing. The lifting assembly is used to drive the first housing to move vertically relative to the frame; and / or

[0036] The low-disturbance downhole water tank sludge cleaning device also includes a detection system and a control system. The detection system includes a first detection component and a second detection component. The first detection component is used to detect the concentration of sludge pumped out of the suction assembly. The second detection component is used to detect the angle between the first plate and the first shell. The control system is used to acquire the detection signals of the first detection component and the second detection component and control the traveling speed of the walking assembly and the discharge rate of the suction assembly.

[0037] According to the water tank cleaning method of the present invention, the water tank is cleaned using the low-disturbance downhole water tank mud cleaning device described in any of the above embodiments. The water tank cleaning method includes the following steps:

[0038] S1. If the thickness of mud in the water tank exceeds the first threshold, the low-disturbance downhole water tank mud cleaning device is activated.

[0039] S2. The walking component moves at a first speed, and the suction component pumps out the mud and sludge from the working chamber at a first displacement, and the included angle between the first plate and the first shell is A.

[0040] S3. Obtain the concentration of the sludge pumped out by the suction assembly, and determine whether the sludge concentration is between the first concentration and the second concentration, wherein the first concentration is less than the second concentration;

[0041] S4. If the sludge concentration is less than the first concentration, increase the traveling speed of the walking component, and / or increase the angle between the first plate and the first shell, and / or decrease the discharge capacity of the suction component; if the sludge concentration is greater than the first concentration, decrease the traveling speed of the walking component, and / or decrease the angle between the first plate and the first shell, and / or increase the discharge capacity of the suction component.

[0042] S5. Repeat steps S3 and S4 until the mud and sludge in the water tank are completely removed. Attached Figure Description

[0043] Figure 1 This is a schematic diagram of the structure of the low-disturbance downhole water tank mud cleaning device according to an embodiment of the present invention.

[0044] Figure 2 This is a schematic diagram of the structure of a low-disturbance downhole water tank mud cleaning device from another perspective of an embodiment of the present invention.

[0045] Figure 3 yes Figure 2 A magnified structural diagram of part A in the middle.

[0046] Figure 4 This is a cross-sectional structural schematic diagram of the low-disturbance downhole water tank mud cleaning device according to an embodiment of the present invention.

[0047] Figure 5 yes Figure 4 A schematic diagram of the structure in the BB direction.

[0048] Figure 6 This is a schematic diagram of the material conveying component according to an embodiment of the present invention.

[0049] Figure 7 This is a schematic diagram of the working state of the low-disturbance downhole water tank mud cleaning device according to an embodiment of the present invention.

[0050] Figure 8 This is a flowchart of a water tank cleaning method according to an embodiment of the present invention.

[0051] Figure label:

[0052] 1. Rack;

[0053] 2. First housing; 21. Working chamber; 211. First chamber; 212. Second chamber; 213. Third chamber; 22. Connecting port; 23. First through hole; 24. Second through hole;

[0054] 3. Excavation assembly; 31. First rotating shaft; 32. Material teeth; 321. First rod; 322. Second rod; 323. Third rod; 324. Fourth rod; 33. First drive unit;

[0055] 4. Suction assembly; 41. Second plate; 42. Collection chamber; 43. Suction pipe; 44. Conveying component; 441. Second housing; 442. Conveying screw; 443. Second drive unit;

[0056] 5. First plate; 51. Adjustment assembly;

[0057] 6. Third plate; 61. Elastic component;

[0058] 7. Lifting assembly;

[0059] 81. Track; 82. Track wheel. Detailed Implementation

[0060] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0061] like Figures 1-7 As shown, the low-disturbance downhole water tank mud cleaning device according to an embodiment of the present invention includes a frame 1 and a walking assembly. The walking assembly is connected to the frame 1 and is used to drive the frame 1 to move inside the water tank. The frame 1 can travel directly to the bottom of the water tank through the walking assembly, or a track 81 can be set on the side wall or above the water tank, and the frame 1 is supported on the track 81 by the walking assembly.

[0062] A first housing 2 is connected to the frame 1. The first housing 2 has a working chamber 21 on the side near the bottom of the water tank. It should be understood that the working chamber 21 faces the bottom of the water tank. During the sludge cleaning and suction of the bottom of the water tank, the sludge is cleaned and suctioned in the working chamber 21 to reduce the disturbance to the sludge and water outside the working chamber 21.

[0063] Optionally, the low-disturbance downhole water tank mud cleaning device has a travel direction, a height direction, and a width direction. The travel direction is the left-right direction shown in the figure, the height direction is the up-down direction shown in the figure, and the width direction is the front-back direction shown in the figure. The opening of the working chamber 21 faces the bottom of the water tank, and the working chamber 21 has an opening in front of the travel direction to facilitate the entry of mud into the working chamber 21. The working chamber 21 has a side plate on the side in the width direction and a rear baffle plate at the rear in the travel direction.

[0064] The low-disturbance downhole water tank mud cleaning device of this invention embodiment also includes a cleaning component 3 and a suction component 4. Both the cleaning component 3 and the suction component 4 are connected to the first housing 2. In the traveling direction of the frame 1, the cleaning component 3 is located at the front end of the working chamber 21 and is used to excavate the mud at the bottom of the water tank so that the mud is removed from the bottom of the water tank. The suction component 4 is located at the rear end of the working chamber 21 and is used to clean and drain the mud in the working chamber 21.

[0065] It should be noted that the cleaning component 3 is used to separate the mud from the bottom of the water tank, which facilitates the subsequent suction operation. The cleaned mud can enter the working chamber 21 in a timely manner, reducing the diffusion of mud and facilitating further aggregation of the separated mud, improving the suction effect, reducing the water content in the mud, and finally being sucked out of the working chamber 21 by the suction component 4.

[0066] Furthermore, by controlling the travel speed of the low-disturbance downhole water tank mud cleaning device and the suction efficiency of the suction component 4, the mud can accumulate in the working chamber and form a certain amount of compression, reducing the water content, while improving the suction efficiency of the suction component 4.

[0067] A first plate 5 is provided in the working chamber, located between the excavation component 3 and the suction component 4. One end of the first plate 5 is hinged to the first housing 2, and the other end of the first plate 5 is connected to the first housing 2 via an adjustment component 51. The adjustment component 51 is used to adjust the angle between the first plate 5 and the first housing 2. It should be understood that the first plate 5 is used to adjust the size of the space between the excavation component 3 and the suction component 4, thereby adjusting the density of the sludge. The first plate 5 also has an active pressing function. By moving the adjustment component 51 back and forth at a certain frequency, the first plate 5 is driven to swing back and forth relative to the first housing 2, which can keep the sludge in the working chamber in a peristaltic state. While ensuring that the water content in the sludge remains unchanged, the concentration of the sludge is made more uniform, which is convenient for the suction component 4 to suction. This avoids problems such as some sludge having too low a concentration, which is inconvenient for subsequent transportation operations, and some sludge having too high a concentration, which causes suction difficulties and pipe blockage.

[0068] The low-disturbance downhole water tank mud cleaning device of the present invention can reduce disturbance to the mud in the water tank, improve the mud cleaning effect, reduce the water content of the mud, facilitate the subsequent transportation of the mud, and reduce the power requirements of the suction equipment.

[0069] like Figures 1-4 As shown, in some embodiments, the working chamber 21 includes a first chamber 211, and the cleaning assembly 3 is disposed in the first chamber 211. The cleaning assembly 3 includes a first rotating shaft 31, a plurality of material teeth 32, and a first driving part 33. The first rotating shaft 31 is disposed in the first chamber 211, and both ends of the first rotating shaft 31 are hinged to the first housing 2. The plurality of material teeth 32 are divided into a plurality of material teeth 32 groups. Each material teeth 32 group includes a plurality of material teeth 32 arranged axially spaced along the first rotating shaft 31. The plurality of material teeth 32 groups are arranged circumferentially spaced along the first rotating shaft 31. The first driving part 33 is disposed on the first housing 2 and is drively connected to the first rotating shaft 31.

[0070] It should be understood that, in the direction of travel, the first chamber 211 is located at the front end of the working chamber 21. The sludge first enters the first chamber 211 and is broken into blocks by the material teeth 32 inside the first chamber 211. The first drive unit 33 is a motor, which is located on the first housing 2 and connected to the first rotating shaft 31, and drives the first rotating shaft 31 to rotate. The material teeth 32 are divided into multiple groups of material teeth 32, which are arranged circumferentially along the first rotating shaft 31. The multiple material teeth 32 in each group of material teeth 32 are arranged axially along the first rotating shaft 31. Driven by the first rotating shaft 31, the multiple material teeth 32 divide the sludge entering the first chamber 211 into blocks. After entering the working chamber 21, the sludge can be compacted under the action of the first plate 5, and the concentration can be relatively uniform under the kneading action of the first plate 5.

[0071] like Figures 1-4 As shown, in some embodiments, at least some of the tooth groups 32 include a first rod 321 and a second rod 322. The first rod 321 extends radially along the first rotating shaft 31, and one end of the first rod 321 is connected to the first rotating shaft 31. The other end of the first rod 321 is connected to the middle of the second rod 322. The second rod 322 extends axially along the first rotating shaft 31. The second rods 322 of the multiple teeth 32 in the same tooth group 32 are spaced apart.

[0072] In other words, the material tooth 32 includes a first rod 321 and a second rod 322. The first rod 321 and the second rod 322 are arranged in a T-shape. The cross-section of the first rod 321 and the second rod 322 can be conical. The first rod 321 and the second rod 322 are used to cut the mud and will not cause large displacement disturbance to the mud. Therefore, the mud after being cut by the first rod 321 and the second rod 322 will still appear in roughly the original position, but gaps will appear in the mud layer, thus forming mud blocks.

[0073] Furthermore, at least some of the tooth groups 32 include a third rod 323 and a fourth rod 324. The third rod 323 extends radially along the first rotating shaft 31, and one end of the third rod 323 is connected to the first rotating shaft 31. The other end of the third rod 323 is connected to the middle of the fourth rod 324. The fourth rod 324 extends axially along the first rotating shaft 31. The fourth rods 324 of multiple teeth 32 in the same tooth group 32 are coaxial and connected end to end.

[0074] It should be noted that, in order to fully separate the mud layer from the bottom of the water tank, the fourth rod 324 in at least one set of material teeth 32 in this embodiment of the invention is coaxial and connected end to end, so that the mud layer along the axial length of the first rotating shaft 31 can be separated from the bottom of the water tank through the fourth rod 324.

[0075] like Figures 1-4 As shown, in some embodiments, the tooth group 32 includes multiple first tooth groups 32 and multiple second tooth groups 32. The tooth 32 in the first tooth group 32 has a larger radial dimension than the tooth 32 in the second tooth group 32. That is, the difference in the radial dimension of the tooth 32 in the first tooth group 32 and the second tooth group 32 allows for segmentation of the mud layer in the thickness direction. This ensures that the mud layer is arranged piece by piece not only axially along the first shaft 31 but also in the thickness direction, facilitating compaction and uniform kneading of the mud layer under the action of the first plate 5, reducing the volume of individual mud pieces, and facilitating suction.

[0076] In some embodiments, the teeth 32 in some groups of toothed teeth 32 are offset from the teeth 32 in at least one group of toothed teeth 32 in the circumferential direction of the first rotating shaft 31. It should be understood that, in order to avoid the toothed teeth 32 only cutting and separating a portion of the mud layer in the axial direction of the first rotating shaft 31, resulting in a portion of the mud layer still adhering to the bottom of the water tank, the toothed teeth 32 in some groups of toothed teeth 32 in this embodiment of the invention are offset from the teeth 32 in the circumferential direction of the first rotating shaft 31. When the first rotating shaft 31 rotates one revolution, the toothed teeth 32 can be used to cut and separate all the mud layer in the axial direction of the first rotating shaft 31 from the bottom of the water tank.

[0077] like Figures 1-5As shown, in some embodiments, the working chamber 21 includes a second chamber 212, the end of the second chamber 212 away from the excavation component 3 has a rear baffle, the suction component 4 includes a plurality of second plates 41 and a plurality of suction pipes 43, the plurality of second plates 41 are spaced apart along a first direction to form a plurality of collection cavities 42 in the second chamber 212, the cross-sectional area of ​​the collection cavities 42 gradually decreases from the end near the excavation component 3 to the end away from the excavation component 3, the first direction is perpendicular to the traveling direction of the frame 1; the plurality of suction pipes 43 are connected to the first housing 2, the suction ports of the plurality of suction pipes 43 are connected to the plurality of collection cavities 42 one by one, and the suction ports are connected to the end of the collection cavity 42 away from the excavation component 3.

[0078] Multiple second plates 41 are installed in the second chamber 212, forming multiple collection cavities 42 within the second chamber 212. The second plates 41 are paired up, and two second plates 41 are arranged in a V-shape to form a group of second plates 41. A collection cavity 42 is formed between two adjacent groups of second plates 41. The collection cavity 42 can allow the mud and sludge entering the second chamber 212 to collect towards the suction port, thereby improving the suction effect of the suction pipe 43.

[0079] The suction assembly 4 includes a suction pump, which is used to create a negative pressure in the suction pipe 43 to pump out the sludge; or, the suction assembly 4 includes a spiral shaft and spiral blades disposed on the spiral shaft, the spiral shaft and spiral blades are disposed in the suction pipe 43, the spiral shaft is driven to rotate by a motor, and the spiral blades are used to pump out the sludge.

[0080] like Figures 1-5 As shown, in some embodiments, the suction assembly 4 further includes a material conveying component 44, which includes a second housing 441, a material conveying screw 442, and a second drive unit 443. The second housing 441 is connected to the first housing 2, the material conveying screw 442 is rotatably connected inside the second housing 441, and the second drive unit 443 is disposed on the second housing 441 and is drively connected to the material conveying screw 442. The second housing 441 has an inlet end and an outlet end. The inlet end is connected to the collection chamber 42, and the outlet end is connected to the suction port of the suction pipe 43.

[0081] It should be understood that, in order to improve the suction effect of sludge, a conveying component 44 is provided between the suction pipe 43 and the collection chamber 42 in this embodiment of the invention. The conveying screw 442 is used to pump the sludge to the suction port of the suction pipe 43, thereby reducing the power of the suction component 4 and avoiding empty suction at the suction port.

[0082] like Figure 6As shown, the inner diameter of the second housing 441 gradually decreases from the feed end to the discharge end, and the conveying screw 442 is a variable diameter screw. That is to say, the conveying component 44 adopts variable diameter conveying, which can improve the density of the sludge. When the sludge moves in the second housing 441, it can be gradually squeezed by the variable diameter conveying screw 442, reducing the water content in the sludge.

[0083] In some embodiments, the working chamber includes a third chamber 213, which is located between the first chamber 211 and the second chamber 212. The first plate 5 is located within the third chamber 213. The adjusting assembly 51 includes a third driving part, which is located on the first housing 2. The actuating end of the third driving part is connected to the first plate 5 to drive the first plate 5 to reciprocate relative to the first housing 2. The third driving part is a cylinder, an electric push rod, or a hydraulic cylinder. The reciprocating motion of the third driving part causes the first plate 5 to reciprocate relative to the first housing 2, which can press and knead the sludge, thereby making the sludge concentration relatively uniform.

[0084] like Figures 1-5 As shown, in some embodiments, the low-disturbance downhole water tank sludge cleaning device further includes a third plate 6. One end of the third plate 6 is hinged to the first housing 2, and an elastic element 61 is provided between the other end of the third plate 6 and the first housing 2. The hinged end of the first plate 5 and the first housing 2 is located near the cleaning assembly 3, and the hinged end of the third plate 6 and the first housing 2 is located near the suction assembly 4. With the third plate 6 near the suction assembly 4 and the first plate 5 near the cleaning assembly 3, after the first plate 5 presses and kneads the sludge, the sludge is then compacted by the third plate 6. The third plate 6 can be passively oscillating, thereby adjusting the feeding speed and pressure to the suction port and reducing the fluctuation of the sludge feeding amount during the sludge suction process.

[0085] The elastic element 61 can be a columnar spring.

[0086] like Figures 1-5 As shown, in some embodiments, the end of the third chamber 213 furthest from the bottom of the water tank is conical, and a connecting port 22 is provided at the end of the third chamber 213 furthest from the bottom of the water tank. The first plate 5 and the third plate 6 are arranged in the third chamber 213, and can be arranged in a figure-eight shape without interfering with each other, so that the sludge in the third chamber 213 is conical. The connecting port 22 can allow water to enter or exit during the movement of the first plate 5 and the third plate 6, so that the third chamber 213 is in a balanced state. It can also reduce the fluctuation of the third chamber 213 under the action of the first plate 5 and the third plate 6 by the action of water entering and exiting through the connecting port 22. The conical arrangement of the third chamber 213 can also prevent the sludge from spreading out.

[0087] Optionally, the first plate 5 is provided with a plurality of first through holes 23 to reduce the resistance encountered by the first plate 5 during the swinging process.

[0088] Optionally, a plurality of second through holes 24 are provided on the side wall of the first housing 2 corresponding to the third chamber 213. The second through holes 24 can improve the communication between the third chamber 213 and the water outside the first housing 2, reduce the water damping on the side of the first plate 5 and the third plate 6 away from the bottom of the water tank, and improve the flexibility of the movement of the first plate 5 and the third plate 6.

[0089] like Figures 1-7 As shown, in some embodiments, the walking assembly includes a walking frame, track wheels 82, and a walking drive unit. The track wheels 82 are mounted on the frame 1, and the walking frame is positioned above the water tank. The walking frame has a track 81, and the track wheels 82 are supported on the track 81 and movable along the track 81. The walking drive unit is mounted on the walking frame and is connected to the track wheels 82 to drive the frame 1 to move along the track 81. The track 81 can be a circular track 81. After the low-disturbance downhole water tank sludge cleaning device travels around the circular track 81 once, it can complete the cleaning of the entire water tank, avoiding the need for the low-disturbance downhole water tank sludge cleaning device to move back and forth or frequently adjust its posture.

[0090] Alternatively, the traveling component is a traveling trolley, and the frame 1 is connected to the traveling trolley.

[0091] like Figures 1-4 As shown, in some embodiments, the low-disturbance downhole water tank sludge cleaning device further includes a lifting assembly 7, which is disposed between the frame 1 and the first housing 2. The lifting assembly 7 is used to drive the first housing 2 to move vertically relative to the frame 1. For example, a first sleeve is provided on the frame 1, and a second sleeve is provided on the first housing 2. The first sleeve and the second sleeve are sleeved together to form the lifting assembly 7. The lifting assembly 7 also includes a lifting drive unit, which can be a cylinder, a hydraulic cylinder, or an electric push rod.

[0092] In some embodiments, the low-disturbance downhole water tank sludge cleaning device further includes a detection system and a control system. The detection system includes a first detection component and a second detection component. The first detection component is used to detect the concentration of sludge pumped out of the suction assembly 4, and the second detection component is used to detect the angle between the first plate 5 and the first housing 2. The control system is used to acquire the detection signals of the first detection component and the second detection component and control the traveling speed of the walking assembly and the discharge volume of the suction assembly 4.

[0093] The first detection component can be a concentration sensor to measure the sludge concentration, or a moisture content sensor to indirectly measure the moisture content in the sludge, thereby indirectly obtaining the sludge concentration. It can also be used to take samples at regular intervals and make visual judgments or instrumental tests on the samples to ensure that the pumped sludge is easy to process in subsequent steps.

[0094] The second detection component is an angle sensor, which can also detect the stroke of the adjustment component 51 to obtain the included angle between the first plate 5 and the first housing 2.

[0095] The control system can be a PLC control system, which can automatically control multiple water tanks.

[0096] like Figure 8 As shown, the water tank cleaning method according to an embodiment of the present invention utilizes the low-disturbance downhole water tank mud cleaning device in any of the above embodiments to clean the water tank. The water tank cleaning method includes the following steps:

[0097] S1. When the thickness of mud in the water tank exceeds the first threshold, the low-disturbance underground water tank mud cleaning device is activated. The thickness of mud in the water tank can be detected by operators periodically or by installing detection equipment, such as an ultrasonic rangefinder. When the thickness of mud deposits in the water tank exceeds the first threshold, the low-disturbance underground water tank mud cleaning device is activated.

[0098] Optionally, the first threshold can be 200mm-500mm, for example, the first threshold is 200mm, 231mm, 260mm, 330mm, 410mm, 465mm or 500mm. It can also be determined according to the percentage of the total depth of the water tank. For example, when the mud thickness exceeds 1 / 15 to 1 / 10 of the total depth h of the water tank, mud cleaning is carried out. The specific value of the first threshold can be 1 / 15h, 1 / 14h, 1 / 12h or 1 / 10h.

[0099] S2. The traveling assembly moves at a first speed, and the suction assembly 4 pumps out the sludge from the working chamber at a first displacement, with the angle between the first plate 5 and the first housing 2 being A. It should be understood that the traveling assembly and the suction assembly 4 operate with the first speed and the first displacement as initial parameters, and the initial angle between the first plate 5 and the first housing 2 is A.

[0100] Based on the first threshold of sludge thickness, the first speed of the walking component, the first displacement of the suction component 4, and the included angle A between the first plate 5 and the first shell 2 are reasonably determined to ensure stable operation and meet the requirements of the work.

[0101] S3. Obtain the concentration of the sludge pumped out by the suction component 4, and determine whether the sludge concentration is between the first and second concentrations, where the first concentration is less than the second concentration. In the early stages of operation, the sludge concentration is affected by various factors. If the sludge has excessive viscosity, severe clumping, and poor fluidity, it will lead to low sludge pumping efficiency and easily cause pipe blockage. During operation, as the sludge cleaning work continues, the thickness and remaining amount of sludge will change, and the sludge pumping concentration is prone to decrease. If the original parameters are used, subsequent sludge treatment will be difficult. If the sludge in the water tank is not completely pumped out, the cleaning cycle of the water tank will be short, and the sludge at the bottom of the water tank will more easily adsorb particulate matter in the water.

[0102] In this embodiment of the invention, by detecting the mud concentration, the concentration of the pumped mud is ensured to be between the first and second concentrations, at which point the low-disturbance downhole water tank mud cleaning device can operate normally.

[0103] S4. If the sludge concentration is less than the first concentration, increase the traveling speed of the walking component, and / or increase the angle between the first plate 5 and the first housing 2, and / or decrease the discharge rate of the suction component 4; if the sludge concentration is greater than the first concentration, decrease the traveling speed of the walking component, and / or decrease the angle between the first plate 5 and the first housing 2, and / or increase the discharge rate of the suction component 4.

[0104] It should be understood that when the sludge concentration is less than the first concentration, the amount of sludge in the working chamber 21 can be increased by increasing the traveling speed of the walking component to meet the discharge requirements of the suction component 4. Alternatively, the effective space of the third chamber 213 can be reduced by increasing the included angle between the first plate 5 and the first shell 2. Or, the discharge rate of the suction component 4 can be reduced to decrease the sludge discharge speed and ensure that the concentration of the discharged sludge meets the requirements.

[0105] Correspondingly, when the sludge concentration is greater than the second concentration, the amount of sludge in the working chamber 21 can be reduced by decreasing the travel speed of the walking component to meet the discharge requirements of the suction component 4. Alternatively, the effective space of the third chamber 213 can be increased by reducing the included angle between the first plate 5 and the first shell 2. Furthermore, the discharge speed of the suction component 4 can be increased to ensure that the concentration of the discharged sludge meets the requirements.

[0106] S5. Repeat steps S3 and S4 until the mud in the water tank is cleaned. During the operation, the mud concentration is periodically or in real time, so that the low-disturbance downhole water tank mud cleaning device automatically adjusts the operating parameters to improve the efficiency and effectiveness of the operation.

[0107] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0108] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0109] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0110] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0111] In this invention, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0112] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A low-disturbance well water tank mud cleaning device, characterized in that, include: frame; A walking assembly is connected to the frame and is used to drive the frame to move within the water tank; A first housing, which is connected to the frame, has a working chamber on the side of the first housing near the bottom of the water tank; The machine includes a shoveling assembly and a suction assembly, both of which are connected to the first housing. In the traveling direction of the frame, the shoveling assembly is located at the front end of the working chamber and is used to excavate the mud and sludge at the bottom of the water tank so that the mud and sludge are removed from the bottom of the water tank. The suction assembly is located at the rear end of the working chamber and is used to clean out the mud and sludge in the working chamber. A first plate is disposed in the working chamber and is located between the excavation assembly and the suction assembly. One end of the first plate is hinged to the first housing, and the other end of the first plate has an adjustment assembly between it and the first housing. The adjustment assembly is used to adjust the angle between the first plate and the first housing.

2. The low-disturbance downhole water tank mud cleaning device according to claim 1, characterized in that, The working chamber includes a first chamber, and the excavation assembly is disposed within the first chamber. The excavation assembly includes: A first rotating shaft is located in the first interior chamber, and both ends of the first rotating shaft are hinged to the first housing. Multiple material teeth, the multiple material teeth are divided into multiple material tooth groups, each material tooth group includes multiple material teeth arranged axially spaced along the first rotating shaft, and the multiple material tooth groups are arranged circumferentially spaced along the first rotating shaft. A first driving unit is disposed on the first housing and is connected to the first rotating shaft via a transmission.

3. The low-disturbance downhole water tank mud cleaning device according to claim 2, characterized in that, At least a portion of the toothed gear assembly includes a first rod and a second rod, the first rod extending radially along the first rotating shaft, with one end of the first rod connected to the first rotating shaft and the other end of the first rod connected to the middle of the second rod, the second rod extending axially along the first rotating shaft, and the second rods of a plurality of teeth in the same toothed gear assembly being spaced apart; and / or At least a portion of the toothed gear assembly includes a third rod and a fourth rod. The third rod extends radially along the first rotating shaft, with one end connected to the first rotating shaft and the other end connected to the middle of the fourth rod. The fourth rod extends axially along the first rotating shaft. The fourth rods of multiple teeth in the same toothed gear assembly are coaxial and connected end-to-end; and / or The tooth assembly includes multiple first tooth assemblies and multiple second tooth assemblies, wherein the tooth dimension in the first tooth assemblies in the radial direction of the first rotating shaft is larger than the tooth dimension in the second tooth assemblies in the radial direction of the first rotating shaft; and / or Some of the teeth in the tooth group are offset from at least one other group of teeth in the tooth group in the circumferential direction of the first rotating shaft.

4. The low-disturbance downhole water tank mud cleaning device according to claim 2, characterized in that, The working chamber includes a second chamber, the end of the second chamber away from the cleaning assembly having a rear baffle, and the suction assembly includes: Multiple second plates are spaced apart along a first direction to form multiple material collection cavities in the second chamber. The cross-sectional area of ​​the material collection cavities gradually decreases from one end closer to the cleaning assembly to the end farther away from the cleaning assembly. The first direction is perpendicular to the travel direction of the frame. Multiple suction pipes are connected to the first housing, and the suction ports of the multiple suction pipes are connected to the multiple collection chambers one by one. The suction ports are connected to the end of the collection chamber away from the cleaning component.

5. The low-disturbance downhole water tank mud cleaning device according to claim 4, characterized in that, The suction assembly further includes a material conveying component, which includes a second housing, a material conveying screw, and a second driving part. The second housing is connected to the first housing, the material conveying screw is rotatably connected inside the second housing, and the second driving part is disposed on the second housing and is drively connected to the material conveying screw. The second housing has a feed end and a discharge end. The feed end is connected to the collection chamber, and the discharge end is connected to the suction port of the suction pipe.

6. The low-disturbance downhole water tank mud cleaning device according to claim 5, characterized in that, The inner diameter of the second housing gradually decreases from the feed end to the discharge end, and the conveying screw is a variable diameter screw.

7. The low-disturbance downhole water tank mud cleaning device according to claim 4, characterized in that, The working chamber includes a third chamber, which is located between the first chamber and the second chamber, and the first plate is located in the third chamber; The adjustment assembly includes a third drive unit, which is disposed on the first housing. The actuating end of the third drive unit is connected to the first plate to drive the first plate to reciprocate relative to the first housing.

8. The low-disturbance downhole water tank mud cleaning device according to claim 7, characterized in that, It also includes a third plate, one end of which is hinged to the first housing, and the other end of which is provided with an elastic element between itself and the first housing. The hinge end of the first plate and the first housing is located near the cleaning assembly, and the hinge end of the third plate and the first housing is located near the suction assembly; and / or The third chamber has a conical end away from the bottom of the water tank, and the end of the third chamber away from the bottom of the water tank has a connecting opening; and / or The first plate is provided with a plurality of first through holes; and / or The first housing has a plurality of second through holes on the side wall corresponding to the third chamber.

9. The low-disturbance downhole water tank mud cleaning device according to any one of claims 1-8, characterized in that, The walking assembly includes a walking frame, track wheels, and a walking drive unit. The track wheels are mounted on the frame, the walking frame is mounted above the water tank, the walking frame has a track, the track wheels are supported on the track and can move along the track, and the walking drive unit is mounted on the walking frame and is connected to the track wheels to drive the frame to move on the track. and / or The low-disturbance downhole water tank sludge cleaning device further includes a lifting assembly, which is disposed between the frame and the first housing. The lifting assembly is used to drive the first housing to move vertically relative to the frame; and / or The low-disturbance downhole water tank sludge cleaning device also includes a detection system and a control system. The detection system includes a first detection component and a second detection component. The first detection component is used to detect the concentration of sludge pumped out of the suction assembly. The second detection component is used to detect the angle between the first plate and the first shell. The control system is used to acquire the detection signals of the first detection component and the second detection component and control the traveling speed of the walking assembly and the discharge rate of the suction assembly.

10. A method for cleaning a water tank, characterized in that, The water tank is cleaned using the low-disturbance downhole water tank mud cleaning device as described in any one of claims 1-9, and the water tank cleaning method includes the following steps: S1. If the thickness of mud in the water tank exceeds the first threshold, the low-disturbance downhole water tank mud cleaning device is activated. S2. The walking component moves at a first speed, and the suction component pumps out the mud and sludge from the working chamber at a first displacement, and the included angle between the first plate and the first shell is A. S3. Obtain the concentration of the sludge pumped out by the suction assembly, and determine whether the sludge concentration is between the first concentration and the second concentration, wherein the first concentration is less than the second concentration; S4. If the sludge concentration is less than the first concentration, increase the traveling speed of the walking component, and / or increase the angle between the first plate and the first shell, and / or decrease the discharge capacity of the suction component; if the sludge concentration is greater than the first concentration, decrease the traveling speed of the walking component, and / or decrease the angle between the first plate and the first shell, and / or increase the discharge capacity of the suction component. S5. Repeat steps S3 and S4 until the mud and sludge in the water tank are completely removed.

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