Pneumatic type ecological dredging device

Abstract

The invention relates to the technical field of sludge cleaning, in particular to a pneumatic ecological dredging device. Comprising a pneumatic pump and a feeding device, the feeding device is used for supplying underwater sludge into the pneumatic pump, the end of the pneumatic pump is communicated with an air inlet pipe, a piston plate, a partition plate and a separation plate are arranged in the pneumatic pump, and in the sludge inlet stage, the separation plate is used for separating sludge and gravel conveyed into the pneumatic pump and guiding the gravel to be attached to the inner wall of the pneumatic pump. Sludge and gravel mixtures are separated through the separation plate, meanwhile, gravel is guided into the material collecting area, the boundary plate separates the accumulated sludge and gravel and prevents the sludge and the gravel from being mixed, and in the sludge discharging stage, the piston plate serves as a power source to drive the discharging barrel to transversely move to push out the gravel in the material collecting area, the gravel is prevented from colliding with a sludge pipe, and the sludge pipe is protected. Abrasion of the inner wall of the sludge pipe is effectively reduced, the service life of the sludge pipe is prolonged, smooth discharge of sludge can be guaranteed, non-stop work of equipment can be achieved, and the sludge discharge efficiency is remarkably improved.

Description

Technical Field

[0001] The present invention relates to the technical field of silt cleaning, in particular to a pneumatic ecological silt clearing device. Background Art

[0002] With the development of the times, the pollution of existing lake water bodies has become increasingly serious. The silt contains a large amount of salt, heavy metals and organic pollutants. Nutrients such as nitrogen and phosphorus in the sludge can also cause excessive growth of algae. Therefore, the sludge has serious harm to water bodies and soil. The silt is divided into a soft layer on the surface of the silt and a hard layer deep in the silt. Existing silt removal equipment can usually only clean the silt surface, so the existing equipment may not completely clean the silt and the debris in the silt.

[0003] Chinese patent publication No. CN119507514A proposes a dredging device and a dredging method, which relate to the technical field of dredging, including a traveling frame, wherein a silt pre-puncture obstacle clearing mechanism, an obstacle clearing conveying mechanism, an upper silt spiral collecting mechanism and a lower silt loosening plough are sequentially arranged in the walking direction of the traveling frame, the silt pre-puncture obstacle clearing mechanism is used to clear obstacles and puncture the silt layer, and the obstacle clearing conveying mechanism is used to transport the obstacles cleared by the silt pre-puncture obstacle clearing mechanism upward above the water surface, the upper silt spiral collecting mechanism is used to collect the upper silt from both sides of the traveling frame to the middle, and the lower silt loosening plough is used to turn the lower silt after the silt pre-puncture obstacle clearing mechanism is punctured from both sides of the traveling frame to the middle, and a confluence cover is provided on the traveling frame, which is at least partially covered by the upper silt spiral collecting mechanism and the lower silt loosening plough, and a silt suction pump is provided on the top of the confluence cover to suck away and remove the silt.

[0004] Since the sludge sucked into the pump body contains hard materials such as gravel, the gravel enters the sludge pipe along with the sludge during the pumping process and collides hard 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 stopped and cleaned, affecting the continuity of dredging. Summary of the Invention

[0005] The present invention provides a pneumatic ecological silt removal device, which uses a sorting plate to separate the mixture of silt and gravel, and at the same time guides the gravel into the aggregate area. The dividing plate separates the accumulated silt and gravel to prevent the two from mixing with each other. During the silt removal stage, the piston plate is used as a power source to drive the discharge cylinder to move horizontally to push the gravel out of the aggregate area, thereby solving the problems raised in the above-mentioned background technology, namely: To achieve the above-mentioned purpose, the pneumatic ecological silt removal device includes a pneumatic pump and a feeding device. The feeding device is used to supply underwater silt into the pneumatic pump. The end of the pneumatic pump is connected to an air inlet pipe. The pneumatic pump is internally provided with a piston plate, a partition plate and a sorting plate. During the silt feeding stage, the sorting plate is used to separate the silt and gravel transported into the pneumatic pump and guide the gravel to the inner wall of the pneumatic pump. A discharge mechanism is provided below the sorting plate. The discharge mechanism is located below the end of the sorting plate. The discharge mechanism includes a dividing plate and a discharge barrel. The dividing plate is used to intercept the gravel and guide the gravel to the front end of the discharge barrel. The discharge barrel is movably arranged in the dividing plate. In the silt removal stage, the lateral movement of the piston plate is used as power to drive the discharge barrel to push the gravel out of the pneumatic pump to realize automatic cleaning of the accumulated gravel and ensure the continuity of silt removal.

[0006] In the above technical solution, during the silt inlet stage, the outlet check valve is closed, the inlet check valve is opened, and the silt is pumped into the pneumatic pump. Conversely, the outlet check valve is opened, the inlet check valve is closed, and the silt is discharged from the pneumatic pump. Secondly, the discharge barrel passes through the partition plate, and the discharge barrel is coaxially connected to a push rod. The distal end of the push rod is in contact with the piston plate, and the outside of the pneumatic pump corresponding to the discharge barrel is provided with a discharge pipe; the outside of the dividing plate is connected to a drainage box pointing to the inner wall of the pneumatic pump, and a one-way valve is provided at the connection between the drainage box and the dividing plate for spraying water in the aggregate area to the sludge in the sludge area.

[0007] That is, in the silt discharge stage, the piston plate presses out the silt and sewage mixture in the pneumatic pump, and cooperates with the clean water sprayed from the drainage box to blow away the sludge. Under the action of pressure, the sludge is discharged in reverse through the sorting plate, and finally the silt is discharged from the outside of the pneumatic pump through the pipeline. During this process, the piston plate pushes the discharge barrel through the push rod to push the gravel to the discharge pipe, and then it is discharged from the pneumatic pump through the discharge pipe, realizing the automatic discharge of the gravel.

[0008] Compared with the prior art, the present invention has the following beneficial effects: The sorting plate is used to separate the mixture of silt and gravel, and the gravel is guided into the aggregate area. The boundary plate separates the accumulated silt and gravel to prevent the two from mixing with each other. During the silt discharge stage, the piston plate is used as the power source to drive the discharge barrel to move horizontally to push the gravel in the aggregate area to avoid collision between the gravel and the sludge pipe, effectively reducing the wear of the inner wall of the sludge pipe and extending its service life. It can not only ensure the smooth discharge of sludge, but also realize the non-stop operation of the equipment, significantly improving the silt discharge efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is a three-dimensional diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the internal structure of the pneumatic pump of the present invention; Figure 3 A partially cutaway perspective view of the internal structure of the pneumatic pump of the present invention; Figure 4 This is a schematic diagram of the siltation principle of the present invention; Figure 5 This is a schematic diagram of the explosion structure of the sorting plate and the partition plate of the present invention; Figure 6 This is a schematic diagram of the connection structure between the dividing plate and the discharge barrel of the present invention; Figure 7 This is a schematic diagram of the silt removal principle of the present invention; Figure 8 For the present invention Figure 7 A in the figure is an enlarged structural diagram.

[0010] The meaning of each number in the figure is: 100, pneumatic pump; 101, feeding device; 102, mud discharge pipe; 103, mud inlet and outlet pipes; 110, air inlet pipe; 111, partition plate; 111a, gravel area; 111b, silt area; 112, sorting plate; 112a, aggregate area; 113, isolation plate; 114, tension spring; 115, discharge pipe; 120, piston plate; 130. Discharge mechanism; 131. Dividing plate; 132. Discharge cylinder; 133. Push rod; 134. Drain box; 135. One-way valve. DETAILED DESCRIPTION

[0011] 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.

[0012] Since the sludge sucked by the pump body contains hard materials such as gravel, the gravel enters the sludge pipe along with the sludge during the pumping process and collides with the pipe wall, causing wear on the inner wall of the sludge pipe and shortening 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 stopped for cleaning, which affects the continuity of silt removal. The present invention provides a pneumatic ecological silt removal device, see Figure 1-Figure 3As shown, it includes a pneumatic pump 100 and a feeding device 101. The feeding device 101 is used to supply underwater sludge into the pneumatic pump 100. The feeding device 101 is connected to a sludge discharge pipe 102 and an inlet and outlet sludge pipe 103 in sequence. 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 provided in the sludge discharge pipe 102 at the connection between the sludge discharge pipe 102 and the inlet and outlet sludge pipe 103. During the silt feeding stage, the outlet check valve is closed and the inlet check valve is opened, and the sludge is drawn 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. Secondly, the end of the pneumatic pump 100 is connected to the air inlet pipe 110, and the interior of the pneumatic pump 100 is provided with a piston plate 120, a partition plate 111 and a sorting plate 112. In the silt feeding stage, the end of the mud inlet and outlet pipes 103 is connected to the interior of the pneumatic pump 100, and the connection point between the mud inlet and outlet pipes 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 and outlet pipes 103 transport silt into the interior of the pneumatic pump 100, the silt and gravel drawn into the pneumatic pump 100 can fall above the sorting plate 112. The sorting plate 112 is used to separate the silt and gravel transported to the pneumatic pump 100 and guide the gravel to the inner wall of the pneumatic pump 100. That is, when the air inlet pipe 110 is filled with compressed air and the pneumatic pump 100 is discharged, the process is the silt inlet stage, and the piston plate 120 moves in the direction b1 as shown to discharge the compressed air from the air inlet pipe 110, and the silt is pressed into the pneumatic pump 100 under the action of water pressure. On the contrary, in the silt discharge stage, the piston plate 120 moves in the direction a1, and the silt is discharged from the inside of the pneumatic pump 100. The above is the silt removal process, which is specifically shown as follows: When the sludge enters the pneumatic pump 100, the sorting plate 112 is high in the middle and low at both ends, and extends outward from the middle to both ends in a smooth manner. The sorting plate 112 and the partition plate 111 cooperate to separate the inner cavity of the pneumatic pump 100 into a gravel area 111a and a sludge area 111b. The gravel area 111a is used to accommodate gravel attached to the wall, and the sludge area 111b accommodates sludge that has passed through the sorting plate 112. Figure 4 As shown, the silt accumulates on the bottom wall of the pneumatic pump 100, and the gravel intercepted by the sorting plate 112 rolls along the sorting plate 112 until it fits the inner wall of the pneumatic pump 100. Figure 5As shown, an isolation plate 113 is rotatably mounted at the end of the sorting plate 112 to block the accumulated rocks. A tension spring 114 is elastically connected to the inner wall of the pneumatic pump 100 via the isolation plate 113. Under normal conditions, the tension spring 114 is in a stretched state, meaning that the accumulated rocks are restrained by the isolation plate 113, preventing the rocks from mixing with the silt in the silt zone 111b during the silt inflow phase. Therefore, during the silt inflow phase, the sorting plate 112 separates the silt and rock mixture and guides the separated rock toward the inner wall of the pneumatic pump 100, thereby achieving a preliminary separation of the silt and rock.

[0013] It is worth noting that: this application only shows one set of equipment. In the actual use process, multiple sets of equipment can be used in combination, that is, multiple devices are rotated to inflate and deflate in sequence to form a continuous mud intake and mud discharge process. 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.

[0014] 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. The discharge mechanism 130 includes a dividing plate 131 and a discharge barrel 132. The dividing plate 131 is used to intercept the gravel and guide the gravel to the front end of the discharge barrel 132. The discharge barrel 132 is movably arranged in the dividing plate 131. In the silt removal stage, the lateral movement of the piston plate 120 is used as power to drive the discharge barrel 132 to push the gravel out of the pneumatic pump 100, so as to realize automatic cleaning of the accumulated gravel and ensure the continuity of silt removal.

[0015] Among them, 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 an aggregate area 112a for discharging crushed stones. When the crushed stones on the isolation plate 113 reach a preset discharge volume, the isolation plate 113 guides the crushed stones into the sorting plate 112 for discharge by the discharge cylinder 132. On the other hand, combined with Figure 6 As shown, during the feeding stage, the discharge barrel 132 is used to form a barrier for the gravel guided into the gathering area 112a to limit the secondary mixing and shrinkage of the silt and gravel, so that the gravel on the discharge barrel 132 falls to the front end of the discharge barrel 132. The discharge barrel 132 penetrates the partition plate 111. The discharge barrel 132 is coaxially connected to the 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 barrel 132 has a discharge pipe 115 on the outside (refer to FIG. Figure 3 shown); In this way, when the dividing plate 131 retreats to the inside of the pneumatic pump 100, under the action of water pressure, the water outside the pneumatic pump 100 flows through the discharge pipe 115 to the dividing plate 131. At the same time, the silt and gravel mixture is separated by the sorting plate 112. Since the isolation plate 113 is in a closed state at this time, the pressure in the gathering area 112a increases. 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, and a one-way valve 135 is provided at the connection between the drainage box 134 and the dividing plate 131, for spraying the water in the aggregate area 112a to 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, the water in the aggregate area 112a is sprayed out from the drainage box 134, and the sprayed water disperses the sludge accumulated in the sludge area 111b so that the sludge can be discharged during the silt discharge stage; as the amount of gravel on the isolation plate 113 increases, the pressure in the aggregate area 112a and the gravel area 111a remains stable, the weight of the gravel on the isolation plate 113 overcomes the elastic potential energy of the tension spring 114, and the isolation plate 113 guides the gravel into the aggregate area 112a (refer to Figure 8 shown); Next, the silt removal stage begins. The piston plate 120 presses out the silt and sewage mixture in the pneumatic pump 100, and the clean water sprayed from the drainage box 134 blows away the sludge. Under the action of pressure, the sludge is discharged in the reverse direction through the sorting plate 112, and finally the silt 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 gravel toward the discharge pipe 115. Then, the gravel is discharged from the pneumatic pump 100 through the discharge pipe 115, realizing the automatic discharge of the gravel. At the same time, returning to Figure 7 As shown, during the silt removal stage, the water flow in the silt area 111b can also reversely clear the filter holes on the sorting plate 112, avoiding the clogging of the filter holes when silt enters next time, which affects the separation effect of silt and gravel.

[0016] That is to say, the sorting plate 112 is used to separate the mixture of silt and gravel, and at the same time, the gravel is guided into the aggregate area 112a. The boundary plate 131 separates the accumulated silt and gravel to prevent the two from mixing with each other. In the silt discharge stage, the piston plate 120 is used as a power source to drive the discharge barrel 132 to move horizontally to push out the gravel in the aggregate area 112a, avoiding the collision of the gravel and the sludge pipe, effectively reducing the wear of the inner wall of the sludge pipe, and extending its service life. It can not only ensure the smooth discharge of sludge, but also realize the non-stop operation of the equipment, and significantly improve the silt discharge efficiency.

[0017] The above shows and describes 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 above embodiments and descriptions are merely preferred examples of the present invention and are not intended to limit the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A pneumatic ecological dredging device, characterized by: The invention comprises a pneumatic pump (100) and a feeding device (101), wherein the feeding device (101) is used to supply bottom silt into the inside of the pneumatic pump (100), an air inlet pipe (110) is connected to the end of the pneumatic pump (100), and the inside of the pneumatic pump (100) is provided with a piston plate (120), a partition plate (111) and a sorting plate (112). During the silting stage, the sorting plate (112) is used to separate the silt 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) comprises a boundary plate (131) and a discharge barrel (132). The boundary plate (131) is used to intercept the crushed stones and guide the crushed stones to the front end of the discharge barrel (132). The discharge barrel (132) is movably provided in the boundary plate (131). In the silt removal stage, the piston plate (120) is used to move laterally as a power to drive the discharge barrel (132) to push the crushed stones out of the pneumatic pump (100), thereby realizing automatic cleaning of the accumulated crushed stones.

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

3. The pneumatic ecological dredging device according to claim 2, characterized in that: The end of the mud inlet and outlet pipe (103) is connected to the inside of the pneumatic pump (100), and the connection point between the mud inlet and 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 is characterized in that: The sorting plate (112) is high in the middle and low at both ends, and extends outward from the middle to both ends in a smooth manner. The sorting plate (112) and the partition plate (111) cooperate to separate the inner cavity of the pneumatic pump (100) into a gravel area (111a) and a silt area (111b). The gravel area (111a) is used to accommodate gravel attached to the wall, and the silt area (111b) accommodates silt that passes through the sorting plate (112).

5. The pneumatic ecological dredging device according to claim 4 is characterized in that: An isolation plate (113) is rotatably provided at the end of the sorting plate (112) to block the accumulated stones. The isolation plate (113) is elastically connected to the inner wall of the pneumatic pump (100) via a tension spring (114). Under normal conditions, the tension spring (114) is in a tensioned 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 an aggregate area (112a) for discharging crushed stones. When the crushed stones on the isolation plate (113) reach a preset discharge volume, the isolation plate (113) guides the crushed stones into the sorting plate (112) for discharge by the discharge barrel (132).

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

8. The pneumatic ecological dredging device according to claim 7, characterized in that: The discharge cylinder (132) passes through the partition plate (111), and the discharge cylinder (132) is coaxially connected to a push rod (133). The distal end of the push rod (133) 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 the 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 drainage box (134) directed toward the inner wall of the pneumatic pump (100), and a one-way valve (135) is provided at the connection between the drainage box (134) and the dividing plate (131) for spraying water in the aggregate area (112a) toward the sludge in the sludge area (111b).

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