A pneumatic ecological dredging device

Abstract

This invention relates to the field of sludge cleaning technology, specifically to a pneumatic ecological sludge cleaning device. It includes a pneumatic pump and a feeding device. The feeding device supplies bottom sludge into the pneumatic pump. An air inlet pipe is connected to the end of the pneumatic pump. The pneumatic pump contains a piston plate, a partition plate, and a sorting plate. During the sludge feeding stage, the sorting plate separates the sludge from the gravel fed into the pneumatic pump and guides the gravel to adhere to the inner wall of the pneumatic pump. The sorting plate separates the sludge and gravel mixture, while guiding the gravel into the collection area. The partition plate separates the accumulated sludge from the gravel, preventing them from mixing. During the sludge discharge stage, the piston plate acts as a power source, driving the discharge cylinder to move laterally and pushing the gravel out of the collection area. This avoids impact between the gravel and the sludge pipe, effectively reducing wear on the inner wall of the sludge pipe and extending its service life. This ensures smooth sludge discharge while allowing the equipment to operate without stopping, significantly improving sludge discharge efficiency.

Description

Technical Field

[0001] This invention relates to the field of sludge removal technology, and more specifically, to a pneumatic ecological sludge removal device. Background Technology

[0002] With the development of the times, the pollution of existing lakes is becoming increasingly serious, with silt containing a large amount of salt, heavy metals and organic pollutants. The nutrients such as nitrogen and phosphorus in the silt can also cause excessive algae growth. Therefore, silt has serious harm to water bodies and soil. Silt is divided into a soft layer on the surface and a hard layer in the depth. Existing dredging equipment can usually only clean the surface layer of silt, so existing equipment has the problem of not thoroughly cleaning the silt and the debris in the silt.

[0003] Chinese Patent Publication No. CN119507514A discloses a dredging device and method, relating to the field of dredging technology. The device includes a walking frame, with a silt pre-piercing and obstacle-clearing mechanism, an obstacle-clearing and conveying mechanism, an upper silt spiral collecting mechanism, and a lower silt loosening plow arranged sequentially along the walking direction of the frame. The silt pre-piercing and obstacle-clearing mechanism is used to clear obstacles and pierce the silt layer. The obstacle-clearing and conveying mechanism is used to transport the obstacles cleared by the silt pre-piercing and obstacle-clearing mechanism upwards above the water surface. The upper silt spiral collecting mechanism is used to collect the upper silt from both sides of the walking frame towards the middle. The lower silt loosening plow is used to turn over the lower silt pierced by the silt pre-piercing and obstacle-clearing mechanism from both sides of the walking frame towards the middle. The walking frame is equipped with a confluence hood that at least partially covers the upper silt spiral collecting mechanism and the lower silt loosening plow. A silt suction pump is provided at the top of the confluence hood to suction and remove the silt.

[0004] Because the sludge sucked into the pump contains hard materials such as gravel, the gravel enters the sludge pipe along with the sludge during the pumping process and makes a hard impact with the pipe wall, causing wear on the inner wall of the sludge pipe and affecting its service life. Moreover, after the equipment has been working for a period of time, the accumulated stones in the pump body need to be cleaned, which affects the continuity of sludge removal. Summary of the Invention

[0005] This invention provides a pneumatic ecological dredging device, which utilizes a sorting plate to separate a mixture of silt and gravel, while simultaneously guiding the gravel into the collection zone. A dividing plate separates the accumulated silt from the gravel, preventing them from mixing. During the dredging stage, a piston plate acts as a power source, driving the discharge cylinder to move laterally and push the gravel out of the collection zone, thereby solving the problems mentioned in the background art, namely:

[0006] To achieve the above objectives, the pneumatic ecological dredging device includes a pneumatic pump and a feeding device. The feeding device is used to supply bottom sludge into the pneumatic pump. An air inlet pipe is connected to the end of the pneumatic pump. The pneumatic pump has a piston plate, a partition plate, and a sorting plate inside. During the sludge feeding stage, the sorting plate is used to separate the sludge and gravel transported into the pneumatic pump and guide the gravel to adhere to the inner wall of the pneumatic pump.

[0007] A discharge mechanism is located below the sorting plate. The discharge mechanism includes a dividing plate and a discharge cylinder. The dividing plate is used to intercept the crushed stone and guide it to the front end of the discharge cylinder. The discharge cylinder is movably installed inside the dividing plate. During the sludge removal stage, the piston plate moves laterally as a power source to drive the discharge cylinder to push the crushed stone out of the pneumatic pump, thereby achieving automatic cleaning of the accumulated crushed stone and ensuring the continuity of sludge removal.

[0008] In the above technical solution, during the sludge inlet stage, the outlet check valve is closed and the inlet check valve is open, and the sludge is pumped into the pneumatic pump. Conversely, the outlet check valve is open and the inlet check valve is closed, and the sludge is discharged from the pneumatic pump.

[0009] Secondly, the discharge cylinder passes through the partition plate, and a push rod is coaxially connected to the discharge cylinder. The far end of the push rod is in contact with the piston plate. The pneumatic pump corresponding to the discharge cylinder has a discharge pipe on its outside. A drainage box pointing to the inner wall of the pneumatic pump is connected to the outside of the partition plate. A one-way valve is provided at the connection between the drainage box and the partition plate to allow water in the collection area to be sprayed onto the sludge in the sludge area.

[0010] That is, during the sludge removal stage, the piston plate presses out the mixture of sludge and sewage in the pneumatic pump, and the clean water sprayed from the drainage box blows the sludge apart. Under pressure, the sludge is discharged in the opposite direction through the sorting plate. Finally, the sludge is discharged from the outside of the pneumatic pump through the pipeline. During this process, the piston plate pushes the discharge cylinder through the push rod to push the crushed stone to the discharge pipe, and then discharges it from the pneumatic pump through the discharge pipe, thus realizing the automatic discharge of crushed stone.

[0011] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0012] The system uses a sorting plate to separate the sludge from the crushed stone mixture, while guiding the crushed stone into the collection area. The dividing plate separates the accumulated sludge from the crushed stone, preventing them from mixing. During the sludge discharge stage, a piston plate is used as a power source to drive the discharge cylinder to move laterally and push the crushed stone out of the collection area, avoiding collisions between the crushed stone and the sludge pipe. This effectively reduces wear on the inner wall of the sludge pipe and extends its service life. It can ensure the smooth discharge of sludge and enable the equipment to operate without stopping, significantly improving the sludge discharge efficiency. Attached Figure Description

[0013] Figure 1 This is a perspective view of the overall structure of the present invention;

[0014] Figure 2 This is a cross-sectional schematic diagram of the internal structure of the pneumatic pump of the present invention;

[0015] Figure 3 This is a three-dimensional view of the internal structure of the pneumatic pump of the present invention, partially cut away.

[0016] Figure 4 This is a schematic diagram illustrating the siltation principle of the present invention;

[0017] Figure 5 This is an exploded view of the sorting plate and partition plate of the present invention;

[0018] Figure 6 This is a schematic diagram of the connection structure between the dividing plate and the discharge cylinder of the present invention;

[0019] Figure 7 This is a schematic diagram illustrating the sludge removal principle of the present invention;

[0020] Figure 8 For the present invention Figure 7 A magnified structural diagram at point A in the diagram.

[0021] The meanings of the labels in the diagram are as follows:

[0022] 100. Pneumatic pump; 101. Feeding device; 102. Sludge discharge pipe; 103. Sludge inlet and outlet pipes;

[0023] 110. Air inlet pipe; 111. Baffle plate; 111a. Crushed stone zone; 111b. Sludge zone; 112. Sorting plate; 112a. Aggregate zone; 113. Isolation plate; 114. Tension spring; 115. Discharge pipe;

[0024] 120. Piston plate;

[0025] 130. Discharge mechanism; 131. Dividing plate; 132. Discharge cylinder; 133. Push rod; 134. Drainage box; 135. Check valve. Detailed Implementation

[0026] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0027] Because the sludge sucked into the pump contains hard materials such as gravel, these gravel enters the sludge pipe along with the sludge during pumping, causing hard impacts with the pipe wall, resulting in wear on the inner wall of the sludge pipe and affecting its service life. Furthermore, after a period of operation, the accumulated stones in the pump body require shutdown for cleaning, affecting the continuity of sludge removal. This invention provides a pneumatic ecological sludge removal device. (See attached image) Figures 1-3 As shown, the device includes a pneumatic pump 100 and a feeding device 101. The feeding device 101 is used to supply bottom sludge into the pneumatic pump 100. The feeding device 101 is connected in sequence to a sludge discharge pipe 102 and a sludge inlet / outlet pipe 103. An outlet check valve and an inlet check valve (the upper end is the outlet check valve and the lower end is the inlet check valve) are installed in the sludge discharge pipe 102 located at the connection between the sludge discharge pipe 102 and the sludge inlet / outlet pipe 103. During the sludge feeding stage, the outlet check valve is closed and the inlet check valve is opened, and the sludge is pumped into the pneumatic pump 100. Conversely, the outlet check valve is opened and the inlet check valve is closed, and the sludge is discharged from the pneumatic pump 100.

[0028] Secondly, the pneumatic pump 100 is connected to an air inlet pipe 110 at its end. The pneumatic pump 100 has a piston plate 120, a partition plate 111, and a sorting plate 112 inside. During the sludge feeding stage, the end of the mud inlet / outlet pipe 103 is connected to the inside of the pneumatic pump 100, and the connection between the mud inlet / outlet pipe 103 and the pneumatic pump 100 is higher than the top of the sorting plate 112 in the horizontal direction. The purpose is that when the mud inlet / outlet pipe 103 transports sludge into the pneumatic pump 100, the sludge and gravel pumped into the pneumatic pump 100 can fall above the sorting plate 112. The sorting plate 112 is used to separate the sludge and gravel transported into the pneumatic pump 100 and guide the gravel to adhere to the inner wall of the pneumatic pump 100.

[0029] That is, when the compressed air entering the pneumatic pump 100 through the air inlet pipe 110 is discharged, this process is the sludge inlet stage. The piston plate 120 moves in the direction shown as b1, discharging the compressed air from the air inlet pipe 110. Under the action of water pressure, the sludge is forced into the pneumatic pump 100. Conversely, in the sludge discharge stage, the piston plate 120 moves in the direction of a1, and the sludge is discharged from the pneumatic pump 100. The above is the sludge removal process, specifically shown below:

[0030] When sludge enters the pneumatic pump 100, the sorting plate 112 is higher in the middle and lower at both ends, extending smoothly outward from the middle to both ends. The sorting plate 112, together with the partition plate 111, divides the inner cavity of the pneumatic pump 100 into a gravel zone 111a and a sludge zone 111b. The gravel zone 111a is used to accommodate gravel adhering to the wall, while the sludge zone 111b accommodates the sludge that has passed through the sorting plate 112. (See reference...) Figure 4 As shown, silt accumulates on the bottom wall of the pneumatic pump 100, while the gravel intercepted by the sorting plate 112 rolls along the sorting plate 112 until it adheres to the inner wall of the pneumatic pump 100. At this point, it is combined with... Figure 5As shown, a partition plate 113 is rotatably mounted at the end of the sorting plate 112 to block the accumulated stones. A tension spring 114 is elastically connected to the inner wall of the pneumatic pump 100. Under normal conditions, the tension spring 114 is in a stretched state, meaning the accumulated stones are restricted by the partition plate 113, preventing them from mixing with the silt in the silt zone 111b during the siltation stage. Therefore, during the siltation stage, the sorting plate 112 separates the silt from the stone mixture and guides the separated stones towards the inner wall of the pneumatic pump 100, thus achieving initial separation of the silt and stones.

[0031] It is worth noting that this application only shows one set of equipment. In actual use, multiple sets of equipment can be combined. That is, multiple devices can be alternately inflated and deflated in sequence to form a continuous process of mud inlet and mud outlet. In addition, the pneumatic pump 100 can also be mounted on a walking device and driven by the walking device to move on the bottom of the water to achieve automatic dredging.

[0032] Furthermore, a discharge mechanism 130 is provided below the sorting plate 112. The discharge mechanism 130 is located below the end of the sorting plate 112 and includes a dividing plate 131 and a discharge cylinder 132. The dividing plate 131 is used to intercept the crushed stone and guide it to the front end of the discharge cylinder 132. The discharge cylinder 132 is movably disposed within the dividing plate 131. During the sludge removal stage, the piston plate 120 is used to move laterally as a power source to drive the discharge cylinder 132 to push the crushed stone out of the pneumatic pump 100, thereby achieving automatic cleaning of the accumulated crushed stone and ensuring the continuity of sludge removal.

[0033] One end of the dividing plate 131 is fixed to the bottom of the sorting plate 112, and the other end is fixed to the inner wall of the pneumatic pump 100. The dividing plate 131, the sorting plate 112, and the pneumatic pump 100 together form a collection area 112a for crushed stone feeding. When the crushed stone on the isolation plate 113 reaches the preset discharge amount, the isolation plate 113 guides the crushed stone into the sorting plate 112 for discharge cylinder 132 to push it out. On the other hand, combined with Figure 6 As shown, during the feeding stage, the discharge cylinder 132 forms a barrier for the crushed stone guided to the collection zone 112a, thereby limiting the fall of crushed stone from the discharge cylinder 132 to the front end of the discharge cylinder 132 during the secondary mixing and retreat of sludge and crushed stone. The discharge cylinder 132 passes through the partition plate 111 and is coaxially connected to a push rod 133. The distal end of the push rod 133 is in contact with the piston plate 120. The pneumatic pump 100 corresponding to the discharge cylinder 132 has a discharge pipe 115 on its exterior (see reference). Figure 3 (as shown)

[0034] In this way, when the dividing plate 131 retracts into the pneumatic pump 100, under the action of water pressure, the water outside the pneumatic pump 100 flows through the discharge pipe 115 into the dividing plate 131. At the same time, the mixture of silt and crushed stone is separated by the sorting plate 112. Since the isolation plate 113 is in a closed state at this time, the pressure in the collection zone 112a increases, combined with... Figure 7 As shown, the outer side of the dividing plate 131 is connected to a drainage box 134 pointing to the inner wall of the pneumatic pump 100. A one-way valve 135 is provided at the connection between the drainage box 134 and the dividing plate 131, which allows water from the collection area 112a to be sprayed onto the sludge in the sludge area 111b. When the front end of the dividing plate 131 moves to the connection between the one-way valve 135 and the dividing plate 131, water from the collection area 112a is sprayed out from the drainage box 134. The sprayed water disperses the sludge accumulated in the sludge area 111b, so that the sludge can be discharged during the sludge removal stage. As the amount of crushed stone on the isolation plate 113 increases, the pressure in the collection area 112a and the crushed stone area 111a remains stable. The weight of the crushed stone on the isolation plate 113 overcomes the elastic potential energy of the tension spring 114, and the isolation plate 113 guides the crushed stone into the collection area 112a (see reference). Figure 8 (as shown)

[0035] Next, in the sludge removal stage, the piston plate 120 presses out the mixture of sludge and sewage in the pneumatic pump 100, and the clean water sprayed from the drainage box 134 blows the sludge apart. Under pressure, the sludge is discharged in the opposite direction through the sorting plate 112. Finally, the sludge is discharged from the outside of the pneumatic pump 100 through the pipeline. During this process, the piston plate 120 pushes the discharge cylinder 132 through the push rod 133 to push the crushed stone to the discharge pipe 115, and then discharges it from the pneumatic pump 100 through the discharge pipe 115, realizing the automatic discharge of crushed stone.

[0036] At the same time, return to Figure 7 As shown, during the sludge removal stage, the water flow in the sludge zone 111b can also reverse the flow of water through the filter holes on the sorting plate 112, preventing the filter holes from becoming clogged and affecting the separation effect of sludge and gravel during the next sludge intake.

[0037] In other words, the sorting plate 112 separates the sludge and crushed stone mixture, while guiding the crushed stone into the collection area 112a. The dividing plate 131 separates the accumulated sludge and crushed stone to prevent them from mixing. During the sludge discharge stage, the piston plate 120 is used as a power source to drive the discharge cylinder 132 to move laterally and push the crushed stone out of the collection area 112a, avoiding collision between the crushed stone and the sludge pipe, effectively reducing the wear of the inner wall of the sludge pipe and extending its service life. This ensures the smooth discharge of sludge and allows the equipment to work without stopping, significantly improving the sludge discharge efficiency.

[0038] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A pneumatic ecological dredging device, characterized in that: It includes a pneumatic pump (100) and a feeding device (101). The feeding device (101) is used to supply bottom sludge into the pneumatic pump (100). The pneumatic pump (100) is connected to an air inlet pipe (110) at its end. The pneumatic pump (100) has a piston plate (120), a partition plate (111), and a sorting plate (112) inside. During the sludge feeding stage, the sorting plate (112) is used to separate the sludge and gravel transported into the pneumatic pump (100) and guide the gravel to adhere to the inner wall of the pneumatic pump (100). A discharge mechanism (130) is provided below the sorting plate (112). The discharge mechanism (130) is located below the end of the sorting plate (112). The discharge mechanism (130) includes a dividing plate (131) and a discharge cylinder (132). The dividing plate (131) is used to intercept the crushed stone and guide it to the front end of the discharge cylinder (132). The discharge cylinder (132) passes through the partition plate (111). The discharge cylinder (132) is movably arranged inside the dividing plate (131). During the sludge removal stage, the piston plate (120) is used to move laterally as a power source to drive the discharge cylinder (132) to push the crushed stone out of the pneumatic pump (100) so as to realize the automatic cleaning of the accumulated crushed stone.

2. The pneumatic ecological dredging device according to claim 1, characterized in that: Above the feeding device (101) are connected a mud discharge pipe (102) and a mud inlet / outlet pipe (103) in sequence. An outlet check valve and an inlet check valve are installed in the mud discharge pipe (102) located at the connection between the mud discharge pipe (102) and the mud inlet / outlet pipe (103).

3. The pneumatic ecological dredging device according to claim 2, characterized in that: The end of the mud inlet / outlet pipe (103) is connected to the inside of the pneumatic pump (100), and the connection between the mud inlet / outlet pipe (103) and the pneumatic pump (100) is higher than the top of the sorting plate (112) in the horizontal direction.

4. The pneumatic ecological dredging device according to claim 1, characterized in that: The sorting plate (112) is high in the middle and low at both ends, and extends outward smoothly from the middle to both ends. The sorting plate (112) and the partition plate (111) work together to divide the inner cavity of the pneumatic pump (100) into a gravel zone (111a) and a sludge zone (111b). The gravel zone (111a) is used to contain gravel attached to the wall, and the sludge zone (111b) contains sludge that has passed through the sorting plate (112).

5. The pneumatic ecological dredging device according to claim 4, characterized in that: An isolation plate (113) is rotatably provided at the end of the sorting plate (112) to block the piled stones. The isolation plate (113) is elastically connected to the inner wall of the pneumatic pump (100) by a tension spring (114). Under normal conditions, the tension spring (114) is in a stretched state.

6. The pneumatic ecological dredging device according to claim 5, characterized in that: One end of the dividing plate (131) is fixed to the bottom of the sorting plate (112), and the other end is fixed to the inner wall of the pneumatic pump (100). The dividing plate (131), the sorting plate (112) and the pneumatic pump (100) together form a collection area (112a) for crushed stone to be discharged. When the crushed stone on the isolation plate (113) reaches the preset discharge amount, the isolation plate (113) guides the crushed stone into the sorting plate (112) for discharge cylinder (132) to push out.

7. The pneumatic ecological dredging device according to claim 6, characterized in that: During the feeding stage, the discharge cylinder (132) is used to form a barrier for the crushed stone that is led into the collection area (112a) to limit the secondary mixing of silt and crushed stone.

8. The pneumatic ecological dredging device according to claim 7, characterized in that: The discharge cylinder (132) is coaxially connected to a push rod (133), the far end of which is in contact with the piston plate (120), and the pneumatic pump (100) corresponding to the discharge cylinder (132) has a discharge pipe (115) on its outside.

9. The pneumatic ecological dredging device according to claim 8, characterized in that: The outer side of the dividing plate (131) is connected to a drain box (134) pointing to the inner wall of the pneumatic pump (100). A one-way valve (135) is provided at the connection between the drain box (134) and the dividing plate (131) to allow water in the collection area (112a) to be sprayed into the sludge in the sludge area (111b).

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