An apparatus for dewatering lake bottom sludge

Abstract

The present invention provides a device for dewatering lake bottom sludge, which relates to the technology of dewatering lake bottom sludge and includes: a mud inlet tray, which includes a bottom part and an inclined part. A plurality of mud inlet openings penetrate vertically through the bottom surface of the bottom part, and the lower ends of the mud inlet openings are coaxially connected with drain pipes; an upper sludge pressing bin, which is movably arranged coaxially with the drain pipes, and a first sieve plate is arranged at the lower end of the upper sludge pressing bin; a lower sludge pressing bin, which is movably arranged coaxially below the upper sludge pressing bin, a second sieve plate is arranged at the upper end of the lower sludge pressing bin, water passing vertical pipes are connected to the lower ends of the lower sludge pressing bin, gas valves are arranged on the water passing vertical pipes, and water passing flexible hoses are connected to the lower ends of the water passing vertical pipes; a drainage bin, which is arranged below the lower sludge pressing bin, and the water passing flexible hoses are all connected to the drainage bin; a mud receiving bin, which is arranged below the drain pipes, the upper part of the mud receiving bin is open, a sliding opening penetrates through the bottom of the mud receiving bin, and the lower sludge pressing bin is coaxially and slidably fitted in the sliding opening. The present invention can effectively reduce the water content of the produced dried sludge, improve the sludge dewatering efficiency and the water output rate, and has strong practicability.

Description

Technical Field

[0001] This application relates to the field of sludge treatment, particularly to the technology of lake bottom sludge dewatering, and specifically to a device for dewatering lake bottom sludge. Background Art

[0002] Generally, when an artificial lake is set downstream of the drainage outlet of a sewage treatment facility, the function of the artificial lake is generally to purify the trace residual pollutants carried in the water discharged from the sewage treatment facility as an ecosystem. However, due to its limited purification ability, some pollutants that cannot be purified will be deposited at the bottom of the lake. After a long time, lake bottom sludge that affects the biodiversity in the artificial lake will be formed. These polluted lake bottom sludges need to be cleaned regularly. After these lake bottom sludges are cleaned out, they generally need to be dewatered to obtain dried sludge and water without sludge. The dried sludge can be used as a soil conditioner, biofuel, building materials, etc., and the water without sludge can be used as clean water after further purification, thereby improving the utilization rate of lake bottom sludge. Currently, traditional lake bottom sludge dewatering devices generally use a pressure filtration method for dewatering, that is, the water in the sludge is squeezed out by extrusion. However, due to the limited pressure exerted by the hydraulic system and the limited amount of sludge treated in a single dewatering process, the water content of the dried sludge produced by this method is relatively high, the efficiency of sludge dewatering is low, and the water outlet rate of the sludge is low. Summary of the Invention

[0003] To solve the above-mentioned defects of related prior arts, this application provides a device for dewatering lake bottom sludge, which can effectively reduce the water content of the produced dried sludge, improve the sludge dewatering efficiency and water outlet rate, and has strong practicability.

[0004] To achieve the above object, the present invention adopts the following technologies:

[0005] A device for dewatering lake bottom sludge, comprising:

[0006] A sludge inlet tray, including a bottom and an inclined part with their tray surfaces connected. The connection between the tray surfaces of the bottom and the inclined part forms an obtuse angle. A plurality of sludge inlets penetrate vertically through the bottom tray surface. The lower ends of the sludge inlets are coaxially connected to dewatering pipes. The inner diameter of the dewatering pipes matches the size of the sludge inlets, and the lower ends of the dewatering pipes are open.

[0007] An upper sludge pressing chamber, the number of which matches the number of sludge inlets and is movably arranged coaxially with the dewatering pipes one by one. The outer diameter of the upper sludge pressing chamber matches the inner diameter of the dewatering pipes. A first sieve plate is provided at the lower end of the upper sludge pressing chamber, and the air pressure inside the upper sludge pressing chamber is adjustable.

[0008] The lower pressing mud bin, the quantity of which matches the mud inlet and is coaxially arranged below the upper pressing mud bin one by one and movably arranged, the outer diameter of the lower pressing mud bin matches the inner diameter of the dewatering pipe, a second sieve plate is arranged at the upper end of the lower pressing mud bin, the air pressure inside the lower pressing mud bin is adjustable, water passing vertical pipes are connected to the lower ends of the lower pressing mud bins, gas valves are arranged on the water passing vertical pipes, and water passing flexible hoses are connected to the lower ends of the water passing vertical pipes;

[0009] The drainage bin is arranged below the lower pressing mud bin, and the water passing flexible hoses are all connected to the drainage bin;

[0010] The mud receiving bin is arranged below the dewatering pipe. The upper part of the mud receiving bin is open. The bottom of the mud receiving bin is axially penetrated along the dewatering pipe with sliding openings whose quantity matches the dewatering pipe, and the lower pressing mud bins are coaxially and slidably matched with the sliding openings one by one;

[0011] The mounting plate is arranged on the installation plane of the device. The drainage bin is arranged on the mounting plate. The mounting plate is provided with a first support rod and a third support rod. The first support rod is connected with a support frame. The mud receiving bin is installed on the support frame. The support frame is provided with a second support rod. The second support rod is connected with a support plate. The third support rod is connected with the mud inlet plate.

[0012] Further, the mud receiving bin includes a bottom plate, vertical columns, end bins, pressing plates, and side plates. The plate surface of the bottom plate is perpendicular to the axial direction of the dewatering pipe. The sliding openings penetrate through the bottom plate along the axial direction of the dewatering pipe. One end of the bottom plate is connected to the support frame. There are two vertical columns, which are respectively arranged at the two corners of the upper surface of one end of the bottom plate along the height direction of the bottom plate. The bottom surface of the end bin is connected to the upper surface of the other end of the bottom plate. The end bin matches the vertical columns in height. The upper part of the end bin is open. A third sieve plate is arranged on the side surface of the end bin connected to the upper surface of the bottom plate. The plate surface of the pressing plate is perpendicular to the length direction of the bottom plate. The pressing plate is movably arranged along the length direction of the bottom plate. The rectangular space formed between the two vertical columns matches the projection of the pressing plate in the length direction of the bottom plate. There are two side plates, and their plate surfaces are both perpendicular to the width direction of the bottom plate. The two side plates are both movably arranged along the width direction of the bottom plate. The rectangular space formed between one side of the side surface of the end bin facing the bottom plate and the same-side vertical column matches the projections of the two side plates in the width direction of the bottom plate. The thickness of the side plates matches the dimension of the vertical columns in the width direction of the bottom plate. A cover plate is arranged between the mud receiving bin and the dewatering pipe. The plate surface of the cover plate is parallel to the plate surface of the bottom plate. The cover plate is movably arranged along the width direction and height direction of the bottom plate. The lower surface of the cover plate is used for sealing contact with the upper ends of the vertical columns, end bins, pressing plates, and side plates. A drain pipe is connected to the bottom surface of the end bin, and the drain pipe is connected to the drainage bin.

[0013] Further, a conveying track is arranged below one side of the bottom plate. The conveying track leads to the roasting bin. The roasting bin is arranged on the mounting plate and is used for roasting the sludge on the conveying track.

[0014] Further, a first linear cylinder is arranged on the support frame along the length direction of the bottom plate, and the driving shaft of the first linear cylinder is connected to the pressing plate.

[0015] Further, a first electric lead screw is provided on the support frame along the width direction of the bottom plate. The first electric lead screw is engaged with a first mating block, and the first mating block is connected to a gantry. Both ends of the gantry are located outside both sides of the bottom plate respectively. Driving rods are connected to both ends of the gantry, and the driving rods are respectively connected to the opposite surfaces of the two side plates.

[0016] Further, a second electric lead screw is provided on the support plate along the width direction of the bottom plate. The second electric lead screw is engaged with a second mating block, and a second linear cylinder is provided on the second mating block along the height direction of the bottom plate. The driving shaft of the second linear cylinder is connected to the upper surface of the cover plate.

[0017] Further, air vent pipes are connected to the upper ends of the upper sludge pressing bins. The air vent pipes are all communicated with the same first air chamber. The first air chamber is arranged to move axially along the dewatering pipe. The lower ends of the side walls of the lower sludge pressing bins are all communicated with first air supply hoses. The first air supply hoses are all communicated with the same second air chamber. The second air chamber is arranged on the mounting plate. The second air chamber is communicated with a short pipe, and the short pipe is communicated with a gas distribution chamber. The gas distribution chamber is installed on the support frame. A gas distribution disc is arranged to move coaxially in the gas distribution chamber. The size of the gas distribution disc matches the inner diameter of the gas distribution chamber. The other end of the gas distribution chamber is communicated with a second air supply hose, and the second air supply hose is communicated to the first air chamber.

[0018] Further, a fixed rod is connected to the support plate, and the fixed rod is connected to a fixing plate. A third linear cylinder is provided on the fixing plate along the axial direction of the dewatering pipe. The driving shaft of the third linear cylinder is connected to the first air chamber.

[0019] Further, an opening is formed through the other end of the gas distribution chamber. A fourth linear cylinder is provided on the support plate along the axial direction of the gas distribution chamber. The driving shaft of the fourth linear cylinder passes through the opening and is coaxially connected to the gas distribution disc. The size of the driving shaft of the fourth linear cylinder matches the size of the opening.

[0020] Further, a fifth linear cylinder is provided on the mounting plate along the axial direction of the dewatering pipe. The driving shaft of the fifth linear cylinder is connected to a driving frame, and the lower sludge pressing bins are all installed on the driving frame.

[0021] The beneficial effects of the present invention are as follows:

[0022] The sludge falling from the sludge inlet tray into the dewatering pipe is dehydrated by using a plurality of upper sludge pressing bins and lower sludge pressing bins. The water in the sludge is pressed into the lower sludge pressing bins by the extrusion of the upper sludge pressing bins and the lower sludge pressing bins, and the water in the sludge is further driven into the lower sludge pressing bins by the air pressure difference between the upper sludge pressing bins and the lower sludge pressing bins, effectively reducing the water content of the dried sludge and improving the sludge dewatering efficiency and water outlet rate. Description of the Drawings

[0023] Figure 1 It is a three-dimensional schematic diagram of the lake bottom sludge dewatering treatment device of the embodiment of the present application.

[0024] Figure 2 It is a partial perspective view of the mud inlet tray, upper mud pressing bin, lower mud pressing bin, and mud receiving bin of the embodiment of the present application.

[0025] Figure 3 It is a partial perspective cross-sectional view of the upper mud pressing bin, lower mud pressing bin, and water discharge pipe of the embodiment of the present application.

[0026] Figure 4 It is an enlarged perspective view of the mud receiving bin of the embodiment of the present application.

[0027] Figure 5 It is an enlarged perspective view of the conveying track, support frame, and support plate of the embodiment of the present application.

[0028] Figure 6 It is a perspective view of another angle of the lake bottom sludge dewatering treatment device of the embodiment of the present application.

[0029] Figure 7 It is a partial perspective cross-sectional view of the air distribution bin of the embodiment of the present application.

[0030] Markings in the figure: 1 - mud inlet tray, 11 - bottom, 12 - inclined part, 13 - mud inlet, 14 - water discharge pipe, 2 - upper mud pressing bin, 21 - first sieve plate, 22 - ventilation pipe, 23 - first air chamber, 24 - second gas transmission hose, 25 - third linear cylinder, 3 - lower mud pressing bin, 31 - second sieve plate, 32 - water passing vertical pipe, 33 - water passing hose, 34 - gas valve, 35 - first gas transmission hose, 36 - second air chamber, 37 - short pipe, 38 - fifth linear cylinder, 39 - drive frame, 4 - drainage bin, 5 - mud receiving bin, 51 - sliding opening, 52 - bottom plate, 53 - vertical column, 54 - end bin, 55 - pressing plate, 56 - side plate, 57 - third sieve plate, 58 - cover plate, 59 - drain pipe, 510 - first linear cylinder, 511 - first electric screw rod, 512 - first mating block, 513 - portal frame, 514 - drive rod, 515 - second electric screw rod, 516 - second mating block, 517 - second linear cylinder, 6 - mounting plate, 61 - first support rod, 62 - support frame, 63 - second support rod, 64 - support plate, 65 - fixing rod, 66 - fixing plate, 67 - third support rod, 7 - conveying track, 71 - roasting bin, 8 - air distribution bin, 81 - air distribution cake, 82 - fourth linear cylinder. Detailed implementation manners

[0031] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the following will describe the embodiments of the present invention in detail with reference to the accompanying drawings. However, the embodiments described herein are only a part of the embodiments of the present invention, not all of the embodiments.

[0032] As Figure 1 and Figure 2As shown in the figure, this embodiment provides a device for dewatering lake bottom sludge, which includes a sludge inlet tray 1, an upper sludge pressing bin 2, a lower sludge pressing bin 3, a drainage bin 4, a sludge receiving bin 5, and a mounting plate 6.

[0033] Specifically, as Figure 1 and Figure 2 shown, the sludge inlet tray 1 includes a bottom part 11 and an inclined part 12 with their tray surfaces connected. The connection between the tray surfaces of the bottom part 11 and the inclined part 12 forms an obtuse angle. Six sludge inlet openings 13 penetrate vertically through the tray surface of the bottom part 11. In this example, the six sludge inlet openings 13 are arranged in an array along the length direction of the bottom part 11; the lower ends of the sludge inlet openings 13 are coaxially connected to dewatering pipes 14 respectively. The inner diameter of the dewatering pipes 14 matches the size of the sludge inlet openings 13, and the lower ends of the dewatering pipes 14 are open. The sludge inlet tray 1 is used to carry the sludge to be dewatered, and the inclined part 12 is used to make the sludge to be dewatered in the sludge inlet tray 1 slide towards the bottom part 11, so as to enter the dewatering pipes 14.

[0034] Specifically, as Figure 2 and Figure 3 shown, the number of the upper sludge pressing bins 2 matches that of the sludge inlet openings 13, and they are movably arranged coaxially with the dewatering pipes 14 one by one. The outer diameter of the upper sludge pressing bins 2 matches the inner diameter of the dewatering pipes 14, so that when the upper sludge pressing bins 2 move into the dewatering pipes 14, the contact surface between their outer walls and the inner walls of the dewatering pipes 14 has airtightness; a first sieve plate 21 is provided at the lower end of the upper sludge pressing bin 2, and the first sieve plate 21 is used to realize the solid-liquid separation of the sludge; the air pressure inside the upper sludge pressing bin 2 is adjustable.

[0035] Specifically, as Figure 2 and Figure 3 shown, the number of the lower sludge pressing bins 3 matches that of the sludge inlet openings 13, and they are movably arranged coaxially below the upper sludge pressing bins 2 one by one. The outer diameter of the lower sludge pressing bins 3 matches the inner diameter of the dewatering pipes 14, so that when the lower sludge pressing bins 3 move into the dewatering pipes 14, the contact surface between their outer walls and the inner walls of the dewatering pipes 14 has airtightness; a second sieve plate 31 is provided at the upper end of the lower sludge pressing bin 3, and the second sieve plate 31 is used to realize the solid-liquid separation of the sludge; the air pressure inside the lower sludge pressing bin 3 is adjustable. The lower ends of the lower sludge pressing bins 3 are all connected to vertical water pipes 32, and a gas valve 34 is used to control the gas and liquid flow in the vertical water pipes 32; the lower ends of the vertical water pipes 32 are all connected to water hoses 33.

[0036] Specifically, as Figure 2 shown, the drainage bin 4 is arranged below the lower sludge pressing bin 3, and the water hoses 33 are all connected to the drainage bin 4. The water hoses 33 are used to combine with the vertical water pipes 32 to introduce the water body in the lower sludge pressing bin 3 into the drainage bin 4. The drainage bin 4 is used to temporarily store the water body without sludge generated after dewatering and send it to the subsequent water purification process.

[0037] Specifically, as Figure 2 and Figure 4As shown in the figure, the mud receiving bin 5 is arranged below the dewatering pipe 14. The upper part of the mud receiving bin 5 is open. A sliding opening 51 that matches the number of dewatering pipes 14 in the axial direction is penetrated through the bottom of the mud receiving bin 5. The lower pressing mud bin 3 is coaxially and slidably fitted into the sliding opening 51 one by one. The mud receiving bin 5 is used to receive the dried sludge produced by the device.

[0038] Specifically, as Figure 1 and Figure 2 shown in the figure, the mounting plate 6 is arranged on the installation plane of the device. The drainage bin 4 is arranged on the mounting plate 6. The mounting plate 6 is provided with a first support rod 61 and a third support rod 67. The first support rod 61 is connected with a support frame 62. The mud receiving bin 5 is installed on the support frame 62. The support frame 62 is provided with a second support rod 63. The second support rod 63 is connected with a support plate 64. The third support rod 67 is connected to the mud inlet tray 1 for supporting the mud inlet tray 1.

[0039] During operation, the upper end of the lower pressing mud bin 3 is extended into the dewatering pipe 14. The sludge is sent into the mud inlet tray 1 by using conveying equipment such as a pumping device. The sludge slides from the inclined part 12 to the bottom part 11 and enters the dewatering pipe 14 to fill the space inside the dewatering pipe 14 above the upper end of the lower pressing mud bin 3. The gas valve 34 is opened, and the air pressure in the upper pressing mud bin 2 is controlled to be constant and the upper pressing mud bin 2 is moved downward. The upper pressing mud bin 2 first contacts the surface of the sludge on the bottom part 11. The upper pressing mud bin 2 is continuously moved downward so that the upper pressing mud bin 2 enters the dewatering pipe 14. At this time, the sludge in the dewatering pipe 14 is squeezed by the upper pressing mud bin 2, and the water in it enters the lower pressing mud bin 3 through the second sieve plate 31 and enters the drainage bin 4 through the water passing vertical pipe 32 and the water passing flexible pipe 33. When the upper pressing mud bin 2 and the lower pressing mud bin 3 press the sludge to a certain extent, the gas valve 34 is closed, the air pressure in the upper pressing mud bin 2 is increased and the air pressure in the lower pressing mud bin 3 is decreased. The remaining water in the dewatering pipe 14 is driven by the air pressure difference to enter the lower pressing mud bin 3 through the second sieve plate 31. At this time, the further dehydration of the sludge is completed. The air pressure in the upper pressing mud bin 2 is balanced and the lower pressing mud bin 3 is moved downward so that the upper surface of the second sieve plate 31 is flush with the inner bottom surface of the mud receiving bin 5. At this time, the dried sludge after dehydration enters the mud receiving bin 5. The sludge in the mud receiving bin 5 can be taken out by using a mechanical material taking device or manually, and the upper pressing mud bin 2 and the lower pressing mud bin 3 are moved to perform the next dehydration treatment. With such a design, the sludge is dehydrated twice through extrusion and air pressure difference, effectively reducing the water content of the finally produced dried sludge and improving the sludge dehydration efficiency.

[0040] Preferably, as Figure 1 、 Figure 2 、 Figure 4As shown in the figure, the mud receiving bin 5 includes a bottom plate 52, vertical columns 53, end bins 54, pressing plates 55, and side plates 56. The surface of the bottom plate 52 is perpendicular to the axial direction of the dewatering pipe 14. The sliding opening 51 penetrates through the bottom plate 52 along the axial direction of the dewatering pipe 14. One end of the bottom plate 52 is connected to the support frame 62. There are two vertical columns 53, which are respectively arranged at the two corners of the upper surface of one end of the bottom plate 52 along the height direction of the bottom plate 52. The bottom surface of the end bin 54 is connected to the upper surface of the other end of the bottom plate 52. The end bin 54 matches the height of the vertical column 53. This matching is used to ensure that a rectangular space can be formed between one side of the side of the end bin 54 facing the bottom plate 52 and the same-side vertical column 53. The upper part of the end bin 54 is open. A third sieve plate 57 is arranged on the side surface of the end bin 54 connected to the upper surface of the bottom plate 52. The third sieve plate 57 is used to realize the solid-liquid separation of the sludge. The surface of the pressing plate 55 is perpendicular to the length direction of the bottom plate 52. The pressing plate 55 is arranged to move along the length direction of the bottom plate 52. The rectangular space formed between the two vertical columns 53 matches the projection of the pressing plate 55 in the length direction of the bottom plate 52. Such a design is used to ensure that when the pressing plate 55 moves between the vertical columns 53, the contact surfaces of the pressing plate 55 with the vertical columns 53 and the bottom plate 52 are all liquid-tight. There are two side plates 56, and their surfaces are both perpendicular to the width direction of the bottom plate 52. The two side plates 56 are both arranged to move along the width direction of the bottom plate 52. The rectangular space formed between one side of the side of the end bin 54 facing the bottom plate 52 and the same-side vertical column 53 matches the projections of the two side plates 56 in the width direction of the bottom plate 52. Such a design is used to ensure that when the two side plates 56 respectively move to between the two sides of the side of the end bin 54 facing the bottom plate 52 and the same-side vertical columns 53, the contact surfaces of the side plates 56 with the vertical columns 53, the bottom plate 52, and the side edges of the side of the end bin 54 facing the bottom plate 52 are all liquid-tight. The thickness of the side plates 56 matches the dimension of the vertical columns 53 in the width direction of the bottom plate 52. Such a design is used to ensure that when the two side plates 56 respectively move to between the two sides of the side of the end bin 54 facing the bottom plate 52 and the same-side vertical columns 53, the contact surfaces of the pressing plate 55 with the side plates 56 and the bottom plate 52 during the movement are all liquid-tight. A cover plate 58 is arranged between the mud receiving bin 5 and the dewatering pipe 14. The surface of the cover plate 58 is parallel to the surface of the bottom plate 52. The cover plate 58 is arranged to move along the width direction and the height direction of the bottom plate 52. The lower surface of the cover plate 58 is used to contact the upper ends of the vertical columns 53, the end bins 54, the pressing plates 55, and the side plates 56, and its contact surface is liquid-tight. The bottom surface of the end bin 54 is connected to a drain pipe 59, and the drain pipe 59 is connected to the drainage bin 4.

[0041] During operation, the initial position of the pressing plate 55 is between the vertical columns 53, the initial positions of the side plates 56 are respectively between the two sides of the side of the end bin 54 facing the bottom plate 52 and the same-side vertical column 53, and the initial position of the cover plate 58 is outside one side of the bottom plate 52. When the upper sludge pressing bin 2 and the lower sludge pressing bin 3 complete the dehydration operation of the sludge, the lower sludge pressing bin 3 drives the dried sludge into the sludge receiving bin 5. When the upper surface of the second sieve plate 31 is flush with the inner bottom surface of the sludge receiving bin 5, move the cover plate 58 so that the lower surface of the cover plate 58 contacts the upper ends of the vertical columns 53, the end bin 54, the pressing plate 55, and the side plates 56. Move the pressing plate 55, and the pressing plate 55 pushes the dried sludge to move and pushes the dried sludge to the third sieve plate 57. Continue to move the pressing plate 55, and the pressing plate and the third sieve plate 57 will squeeze the dried sludge. The remaining moisture in the dried sludge enters the end bin 54 through the third sieve plate 57 and enters the drainage bin 4 through the drain pipe 59. After the squeezing is completed, move the side plates 56 simultaneously to push the sludge out from one side of the bottom plate 52; since the dehydration treatment of the sludge by the upper sludge pressing bin 2 and the lower sludge pressing bin 3 is vertical extrusion, the pressing plate 55 and the second sieve plate 31 are provided to further squeeze and dehydrate the dried sludge that has completed dehydration in the horizontal direction. Such a design further reduces the water content of the dried sludge and improves the sludge dehydration efficiency.

[0042] Preferably, as Figure 1 , Figure 4 , Figure 5 shown, a conveying track 7 is provided below one side of the bottom plate 52. The conveying track 7 is used to receive the dried sludge pushed out from one side of the bottom plate 52 by the side plate 56 and convey the dried sludge; the conveying track 7 leads to a roasting bin 71. The roasting bin 71 is arranged on the mounting plate 6 and is used to roast the sludge on the conveying track 7 to further reduce the water content of the dried sludge.

[0043] Preferably, as Figure 5 shown, a first linear cylinder 510 is arranged on the support frame 62 along the length direction of the bottom plate 52. The driving shaft of the first linear cylinder 510 is connected to the pressing plate 55, and the first linear cylinder 510 is used to drive the pressing plate 55 to move.

[0044] Preferably, as Figure 4 and Figure 5 shown, a first electric lead screw 511 is arranged on the support frame 62 along the width direction of the bottom plate 52. The first electric lead screw 511 is matched with a first matching block 512. The first matching block 512 is connected to a gantry 513. The two ends of the gantry 513 are respectively outside the two sides of the bottom plate 52. Both ends of the gantry 513 are connected with driving rods 514. The driving rods 514 are respectively connected to the opposite surfaces of the two side plates 56. The first electric lead screw 511 is used to drive the side plates 56 to move through the first matching block 512, the gantry 513, and the driving rods 514.

[0045] Preferably, as Figure 4and Figure 5 As shown in Figure 5 , a second electric lead screw 515 is provided on the support plate 64 along the width direction of the bottom plate 52. The second electric lead screw 515 is engaged with a second mating block 516. A second linear cylinder 517 is provided on the second mating block 516 along the height direction of the bottom plate 52. The driving shaft of the second linear cylinder 517 is connected to the upper surface of the cover plate 58. The second electric lead screw 515 is used to drive the cover plate 58 to move along the width direction of the bottom plate 52, and the second linear cylinder 517 is used to drive the cover plate 58 to move along the height direction of the bottom plate 52.

[0046] Preferably, as Figure 2 、 Figure 6 、 Figure 7 As shown in Figure 7 , the upper ends of the upper sludge pressing bins 2 are all connected with ventilation pipes 22. The ventilation pipes 22 are all communicated with the same first air chamber 23. The first air chamber 23 is arranged to move axially along the dehydrating pipe 14. The lower ends of the side walls of the lower sludge pressing bins 3 are all communicated with first air supply hoses 35. The first air supply hoses 35 are all communicated with the same second air chamber 36. The second air chamber 36 is arranged on the mounting plate 6. The second air chamber 36 is communicated with a short pipe 37. The short pipe 37 is communicated with a gas distribution chamber 8. The gas distribution chamber 8 is installed on the support frame 62. A gas distribution cake 81 is coaxially movable in the gas distribution chamber 8. The size of the gas distribution cake 81 matches the inner diameter of the gas distribution chamber 8, so as to make the contact surface between the gas distribution cake 81 and the inner wall of the gas distribution chamber 8 airtight; the other end of the gas distribution chamber 8 is communicated with a second air supply hose 24, and the second air supply hose 24 is communicated to the first air chamber 23.

[0047] During operation, when it is necessary to keep the air pressure in the upper sludge pressing bin 2 unchanged, that is, to control the gas distribution cake 81 to be stationary; when it is necessary to increase the air pressure in the upper sludge pressing bin 2 and decrease the air pressure in the lower sludge pressing bin 3, that is, to move the gas distribution cake towards the second air supply hose 24; when it is necessary to adjust the air pressure in the upper sludge pressing bin 2, open the gas valve 34 to make the gas valve 34 flow and move the gas distribution cake, then the air pressure in the upper sludge pressing bin 2 can be adjusted. Such a design can complete the adjustment of the air pressure in the upper sludge pressing bin 2 and the lower sludge pressing bin 3 without a gas pump.

[0048] Preferably, as Figure 1 and Figure 2 As shown in Figure 2 , a fixed rod 65 is connected to the support plate 64. The fixed rod 65 is connected with a fixing plate 66. A third linear cylinder 25 is provided on the fixing plate 66 along the axial direction of the dehydrating pipe 14. The driving shaft of the third linear cylinder 25 is connected to the first air chamber 23. The third linear cylinder 25 is used to drive the upper sludge pressing bin 2 to move coaxially with the dehydrating pipe 14 through the first air chamber 23 and the ventilation pipe 22.

[0049] Preferably, as Figure 7As shown, the other end of the air distribution bin 8 is provided with an opening. Along the axial direction of the air distribution bin 8 on the support plate 64, a fourth linear cylinder 82 is provided. The driving shaft of the fourth linear cylinder 82 passes through the opening and is coaxially connected to the air distribution disc 81. The size of the driving shaft of the fourth linear cylinder 82 matches the size of the opening. Here, the match means that the contact surface between the driving shaft of the fourth linear cylinder 82 and the opening has airtightness; the fourth linear cylinder 82 is used to drive the air distribution disc 81 to move.

[0050] Preferably, as Figure 1 and Figure 2 shown, on the mounting plate 6, a fifth linear cylinder 38 is provided along the axial direction of the dehydrating pipe 14. The driving shaft of the fifth linear cylinder 38 is connected to a driving frame 39. The lower pressing mud bin 3 is installed on the driving frame 39. The fifth linear cylinder 38 is used to drive the lower pressing mud bin 3 to move coaxially with the upper pressing mud bin 2 through the driving frame 39.

[0051] The above are only the preferred embodiments of the present application and are not used to limit the present application. Obviously, those skilled in the art can make various changes and deformations to the present application without departing from the spirit and scope of the present application.

Claims

1. A device for dewatering lake bottom sludge, characterized in that, Comprising: The mud inlet tray (1) includes a bottom part (11) and an inclined part (12) with their tray surfaces connected. The connection of the tray surfaces of the bottom part (11) and the inclined part (12) forms an obtuse angle. A plurality of mud inlet openings (13) penetrate vertically through the tray surface of the bottom part (11). The lower ends of the mud inlet openings (13) are coaxially connected to drain pipes (14). The inner diameter of the drain pipes (14) matches the size of the mud inlet openings (13). The lower ends of the drain pipes (14) are open. The upper mud pressing bin (2), the quantity of which matches that of the mud inlet openings (13), is movably arranged coaxially with the drain pipes (14) one by one. The outer diameter of the upper mud pressing bin (2) matches the inner diameter of the drain pipes (14). A first sieve plate (21) is provided at the lower end of the upper mud pressing bin (2). The air pressure inside the bin of the upper mud pressing bin (2) is adjustable. The lower mud pressing bin (3), the quantity of which matches that of the mud inlet openings (13), is movably arranged coaxially below the upper mud pressing bin (2) one by one. The outer diameter of the lower mud pressing bin (3) matches the inner diameter of the drain pipes (14). A second sieve plate (31) is provided at the upper end of the lower mud pressing bin (3). The air pressure inside the bin of the lower mud pressing bin (3) is adjustable. The lower ends of the lower mud pressing bins (3) are all connected to vertical water pipes (32). A gas valve (34) is provided on the vertical water pipes (32). The lower ends of the vertical water pipes (32) are all connected to water hoses (33). The drainage bin (4) is arranged below the lower mud pressing bin (3). The water hoses (33) are all connected to the drainage bin (4). The mud receiving bin (5) is arranged below the drain pipes (14). The upper part of the mud receiving bin (5) is open. The bottom of the mud receiving bin (5) is axially penetrated along the drain pipes (14) with sliding openings (51) whose quantity matches that of the drain pipes (14). The lower mud pressing bins (3) are coaxially and slidably matched with the sliding openings (51) one by one. The mounting plate (6) is arranged on the mounting plane of the device. The drainage bin (4) is arranged on the mounting plate (6). A first support rod (61) and a third support rod (67) are provided on the mounting plate (6). The first support rod (61) is connected to a support frame (62). The mud receiving bin (5) is mounted on the support frame (62). A second support rod (63) is provided on the support frame (62). The second support rod (63) is connected to a support plate (64). The third support rod (67) is connected to the mud inlet tray (1). The upper ends of the upper mud pressing bins (2) are all connected to air pipes (22). The air pipes (22) are all connected to the same first air chamber (23). The first air chamber (23) is movably arranged along the axis of the drain pipes (14). The lower ends of the side walls of the lower mud pressing bins (3) are all connected to first air supply hoses (35). The first air supply hoses (35) are all connected to the same second air chamber (36). The second air chamber (36) is arranged on the mounting plate (6). The second air chamber (36) is connected to a short pipe (37). The short pipe (37) is connected to a gas distribution chamber (8). The gas distribution chamber (8) is mounted on the support frame (62). A gas distribution disc (81) is movably arranged coaxially inside the gas distribution chamber (8). The size of the gas distribution disc (81) matches the inner diameter of the gas distribution chamber (8). The other end of the gas distribution chamber (8) is connected to a second air supply hose (24). The second air supply hose (24) is connected to the first air chamber (23). A fixing rod (65) is connected to the support plate (64), the fixing rod (65) is connected to a fixing plate (66), a third linear cylinder (25) is arranged on the fixing plate (66) along the axial direction of the water discharge pipe (14), and the driving shaft of the third linear cylinder (25) is connected to the first air chamber (23); The other end of the air distribution chamber (8) is provided with an opening in a penetrating manner. A fourth linear cylinder (82) is arranged on the support plate (64) along the axial direction of the air distribution chamber (8). The driving shaft of the fourth linear cylinder (82) passes through the opening and is coaxially connected to the air distribution cake (81). The size of the driving shaft of the fourth linear cylinder (82) matches the size of the opening.

2. The lake bottom sludge dewatering treatment device according to claim 1, wherein The mud receiving bin (5) includes a bottom plate (52), vertical columns (53), end bins (54), a pressing plate (55), and side plates (56). The plate surface of the bottom plate (52) is perpendicular to the axial direction of the water discharge pipe (14). A sliding opening (51) penetrates through the bottom plate (52) along the axial direction of the water discharge pipe (14). One end of the bottom plate (52) is connected to the support frame (62). There are two vertical columns (53), which are respectively arranged at the two corners of the upper surface of one end of the bottom plate (52) along the height direction of the bottom plate (52). The bottom surface of the end bin (54) is connected to the upper surface of the other end of the bottom plate (52). The end bin (54) matches the height of the vertical column (53). The upper part of the end bin (54) is open. A third sieve plate (57) is arranged on the side surface where the end bin (54) is connected to the upper surface of the bottom plate (52). The plate surface of the pressing plate (55) is perpendicular to the length direction of the bottom plate (52). The pressing plate (55) is arranged to move along the length direction of the bottom plate (52). The rectangular space formed between the two vertical columns (53) matches the projection of the pressing plate (55) in the length direction of the bottom plate (52). There are two side plates (56), and their plate surfaces are both perpendicular to the width direction of the bottom plate (52). The two side plates (56) are both arranged to move along the width direction of the bottom plate (52). The rectangular space formed between one side of the side surface of the end bin (54) facing the bottom plate (52) and the same-side vertical column (53) matches the projections of the two side plates (56) in the width direction of the bottom plate (52). The thickness of the side plate (56) matches the dimension of the vertical column (53) in the width direction of the bottom plate (52). A cover plate (58) is arranged between the mud receiving bin (5) and the water discharge pipe (14). The plate surface of the cover plate (58) is parallel to the plate surface of the bottom plate (52). The cover plate (58) is arranged to move along the width direction and height direction of the bottom plate (52). The lower surface of the cover plate (58) is used for sealing contact with the upper ends of the vertical column (53), the end bin (54), the pressing plate (55), and the side plate (56). A drain pipe (59) is communicated with the bottom surface of the end bin (54), and the drain pipe (59) is communicated to the drainage bin (4).

3. The sludge dewatering treatment device for lake bottom according to claim 2, wherein A conveying track (7) is arranged below one side of the bottom plate (52), and the conveying track (7) leads to a roasting bin (71). The roasting bin (71) is arranged on the mounting plate (6) and is used for roasting the sludge on the conveying track (7).

4. A lake bottom sludge dewatering treatment device according to claim 2, characterized in that, A first linear cylinder (510) is arranged on the support frame (62) along the length direction of the bottom plate (52), and the driving shaft of the first linear cylinder (510) is connected to the pressing plate (55).

5. The bottom sludge dewatering treatment device according to claim 2, characterized in that, A first electric lead screw (511) is provided on the support frame (62) along the width direction of the bottom plate (52). The first electric lead screw (511) is engaged with a first mating block (512). The first mating block (512) is connected to a portal frame (513). Both ends of the portal frame (513) are located outside both sides of the bottom plate (52). Both ends of the portal frame (513) are connected to drive rods (514), and the drive rods (514) are respectively connected to the opposite surfaces of the two side plates (56).

6. The sludge dewatering treatment device for lake bottom according to claim 2, wherein, A second electric lead screw (515) is provided on the support plate (64) along the width direction of the bottom plate (52). The second electric lead screw (515) is engaged with a second mating block (516). A second linear cylinder (517) is provided on the second mating block (516) along the height direction of the bottom plate (52). The drive shaft of the second linear cylinder (517) is connected to the upper surface of the cover plate (58).

7. The sludge dewatering treatment device for lake bottom according to claim 1, wherein A fifth linear cylinder (38) is provided on the mounting plate (6) along the axial direction of the drain pipe (14). The drive shaft of the fifth linear cylinder (38) is connected to a drive frame (39), and the lower pressing mud bin (3) is mounted on the drive frame (39).

Images