Piston type pneumatic dredging pump

Abstract

The utility model relates to a piston type pneumatic dredging pump which comprises a dredging box, a piston and a driving mechanism A, the piston divides the dredging box into a dredging bin and a backflushing bin, the dredging bin communicates with a sludge inlet pipe and a sludge discharge pipe, a one-way check valve A with an opening facing the dredging box is arranged in the sludge inlet pipe, and a one-way check valve B with an opening away from the dredging box is arranged in the sludge discharge pipe; the backflushing bin communicates with a water inlet pipe and a water drainage pipe, the water inlet pipe communicates with the mud inlet pipe, a one-way check valve C with an opening facing the dredging box is arranged in the water inlet pipe, and a one-way check valve D with an opening away from the dredging box is arranged in the water drainage pipe; filter screens are rotatably arranged at the ends, away from the desilting box, of the drainage pipe and the sludge inlet pipe, and a driving mechanism B for driving the filter screens to rotate is arranged on the desilting box; it is ensured that one of the desilting bin and the back-flushing bin in the desilting box pumps water and the other one drains water through the piston, the filter screen is back-flushed through the back-flushing bin and the drainage pipe, the filter screen is prevented from being blocked, the desilting efficiency is prevented from being affected, and the device is simple, efficient, safe and reliable.

Description

Technical Field

[0001] This utility model relates to the field of dredging pump technology, and in particular to a piston-type pneumatic dredging pump. Background Technology

[0002] A dredging pump is a pump specifically designed to remove silt and sediment from rivers, lakes, reservoirs, sewers, and other similar environments. A piston-type pneumatic dredging pump is a dredging device widely used in underwater environmental dredging projects. It uses pneumatic drive technology to drive a piston to reciprocate within a cylinder, thereby drawing mud from the water into the cylinder and discharging it to the surface.

[0003] To prevent impurities carried in the mud from clogging the dredging pump, a filter device is often installed in the mud inlet pipe. However, there are many kinds of impurities in the water. Larger impurities such as dead branches and leaves and aquatic plants can easily adhere to the filter device, causing it to become clogged and seriously affecting the dredging efficiency.

[0004] Therefore, a piston-type pneumatic sludge cleaning pump that can automatically clean impurities from the outside of the filter device is needed. Utility Model Content

[0005] This utility model addresses the shortcomings of existing technologies by providing a piston-type pneumatic sludge pump that ensures that one of the sludge-cleaning chambers and the backflushing chamber in the sludge-cleaning box is pumping water while the other is draining water. The backflushing chamber and the drain pipe backflushing the filter screen prevent the filter screen from clogging and affecting the sludge-cleaning efficiency. This pump is simple, efficient, safe, reliable, and easy to operate.

[0006] This utility model is achieved through the following technical solution: a piston-type pneumatic sludge pump is provided, including a sludge cleaning box, a piston slidingly disposed inside the sludge cleaning box, and a drive mechanism A for driving the piston to reciprocate; the sludge cleaning box is connected to an inlet pipe and a outlet pipe, the inlet pipe is provided with a one-way check valve A with its opening facing the sludge cleaning box, and the outlet pipe is provided with a one-way check valve B with its opening facing away from the sludge cleaning box; the piston divides the sludge cleaning box into a sludge cleaning chamber and a backflushing chamber, the sludge cleaning chamber is connected to the inlet pipe and the outlet pipe, and the backflushing chamber is connected to an inlet pipe and an outlet pipe. The water pipe, inlet pipe, and sludge inlet pipe are connected. The inlet pipe is equipped with a one-way check valve C with its opening facing the sludge removal box, and the drain pipe is equipped with a one-way check valve D with its opening facing away from the sludge removal box. A filter screen is installed at the end of the drain pipe and the sludge inlet pipe away from the sludge removal box, and the sludge removal box is equipped with a drive mechanism B that drives the filter screen to rotate. A piston ensures that one of the sludge removal chambers and the backflushing chamber in the sludge removal box pumps water while the other drains water. The backflushing chamber and the drain pipe backflush the filter screen to prevent it from clogging and affecting the sludge removal efficiency.

[0007] As an optimization, the drive mechanism B includes push plates that are hinged to the filter screen via snap fasteners and arranged sequentially around the rotation axis of the filter screen. The hinge axis of the push plates intersects or is not in the same plane as the rotation axis of the filter screen. The snap fasteners have slots extending around the hinge axis of the push plates. The angle formed by one end of the slot and the perpendicular line of the filter screen is greater than the angle formed by the other end of the slot and the perpendicular line of the filter screen, and the angles formed by both ends of the slot and the perpendicular line of the filter screen are less than 90°. The angle of the push plates is automatically adjusted according to the direction of water flow through the slots of the snap fasteners, so that the water flows through the push plates and drives the filter screen to rotate, automatically replacing the backwashing part of the filter screen.

[0008] As an optimization, the clips and push plates are located on the side of the filter screen facing the drain pipe and mud inlet pipe; this prevents aquatic plants and other impurities from getting tangled in the clips and push plates and affecting the rotation of the filter screen.

[0009] As an optimization, the side of the filter screen away from the drain pipe and sludge inlet pipe is a conical structure, and the top of the conical structure is away from the drain pipe and sludge inlet pipe; under the action of water flow, the conical structure automatically cleans the impurities attached to the filter screen.

[0010] The beneficial effects of this utility model are as follows: the piston ensures that one of the sludge-cleaning chambers and the backflushing chamber in the sludge-cleaning box pumps water while the other drains water. The backflushing chamber and the drain pipe backflush the filter screen to prevent the filter screen from clogging and affecting the sludge-cleaning efficiency. The buckle groove automatically adjusts the angle of the push plate according to the water flow direction, so that the water flows through the push plate and drives the filter screen to rotate, automatically replacing the backflushing part of the filter screen. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of this utility model;

[0012] Figure 2 for Figure 1 A schematic diagram of the structure at point A;

[0013] Figure 3 This is an exploded view of the push plate and buckle of this utility model;

[0014] Figure 4 This is a diagram showing the push plate of this utility model in use;

[0015] As shown in the figure:

[0016] 1. Sludge removal box; 2. Piston; 3. Drive mechanism A; 4. Sludge inlet pipe; 5. One-way check valve A; 6. Sludge discharge pipe; 7. One-way check valve B; 8. Water inlet pipe; 9. One-way check valve C; 10. Drain pipe; 11. One-way check valve D; 12. Filter screen; 13. Drive mechanism B; 101. Sludge removal chamber; 102. Backflushing chamber; 1301. Buckle; 1302. Push plate. Detailed Implementation

[0017] To clearly illustrate the technical features of this solution, the following detailed implementation method will be used to explain the solution.

[0018] like Figure 1 The piston-type pneumatic sludge pump of this utility model includes a sludge-cleaning box 1, a piston 2 slidingly disposed inside the sludge-cleaning box 1, and a drive mechanism A3 for driving the piston 2 to reciprocate. The sludge-cleaning box 1 is connected to a sludge inlet pipe 4 and a sludge outlet pipe 6. A one-way check valve A5 with its opening facing the sludge-cleaning box 1 is disposed inside the sludge inlet pipe 4, and a one-way check valve B7 with its opening facing away from the sludge-cleaning box 1 is disposed inside the sludge outlet pipe 6. The piston 2 divides the sludge-cleaning box 1 into a sludge-cleaning chamber 101 and a backflushing chamber 102. 101 connects the sludge inlet pipe 4 and the sludge outlet pipe 6. The backwash chamber 102 is connected to the water inlet pipe 8 and the drain pipe 10. The water inlet pipe 8 and the sludge inlet pipe 4 are connected. The water inlet pipe 8 is equipped with a one-way check valve C9 with its opening facing the sludge cleaning box 1. The drain pipe 10 is equipped with a one-way check valve D11 with its opening facing away from the sludge cleaning box 1. The drain pipe 10 and the sludge inlet pipe 4 are equipped with a filter screen 12 at the ends away from the sludge cleaning box 1. The sludge cleaning box 1 is equipped with a drive mechanism B13 that drives the filter screen 12 to rotate.

[0019] The drive mechanism A3 is existing technology and can be a cylinder; the piston 2 and the inner wall of the sludge removal box 1 are fitted together; the connection between the water inlet pipe 8 and the mud inlet pipe 4 is located on the side of the one-way check valve A5 near the mud inlet.

[0020] Start drive mechanism A3, which drives piston 2 toward backflushing chamber 102. The pressure in sludge chamber 101 decreases, and one-way check valve B7 closes. Sludge in the water passes through filter screen 12 into sludge inlet pipe 4, and then through one-way check valve A5 into sludge chamber 101. Larger impurities in the sludge remain on the outside of filter screen 12. At the same time, the pressure in backflushing chamber 102 increases, and one-way check valve C9 closes. Water in backflushing chamber 102 passes through one-way check valve D11 into drain pipe 10, and then through filter screen 12 to backflush the impurities on the outside of filter screen 12. The impurities on the outside of filter screen 12 are removed from filter screen 12. Start drive mechanism B13, which drives filter screen 12 to rotate. The parts of sludge inlet pipe 4 and drain pipe 10 that contact filter screen 12 are constantly alternating.

[0021] When the drive mechanism A3 is activated, the piston 2 moves toward the sludge chamber 101, increasing the pressure inside the sludge chamber 101. The one-way check valve A5 closes, and the sludge in the sludge chamber 101 passes through the one-way check valve B7 into the sludge discharge pipe 6 and is discharged to the water surface. At the same time, the pressure inside the backwash chamber 102 decreases, and the one-way check valve D11 closes. The sludge in the water passes through the filter screen 12 into the inlet pipe 8 and then through the one-way check valve C9 into the backwash chamber 102. Larger impurities in the sludge remain on the outside of the filter screen 12.

[0022] like Figure 1, Figure 2 , Figure 3 and Figure 4 The drive mechanism B13 shown includes push plates 1302 that are hinged to the filter screen 12 via a snap fastener 1301 and arranged sequentially around the rotation axis of the filter screen 12. The hinge axis of the push plate 1302 intersects or is not in the same plane as the rotation axis of the filter screen 12. The snap fastener 1301 has a slot extending around the hinge axis of the push plate 1302. The angle formed by one end of the slot and the perpendicular line of the filter screen 12 is greater than the angle formed by the other end of the slot and the perpendicular line of the filter screen 12, and the angles formed by both ends of the slot and the perpendicular line of the filter screen 12 are respectively less than 90°. With the hinge axis of the push plate 1302 as the center, the angles formed by both ends of the slot and the perpendicular line of the filter screen 12 are respectively greater than or equal to 0°, that is, the angle formed by the push plate 1302 and the filter screen 12 is greater than 0° and less than or equal to 90°. At the same time, the rotation range of the push plate 1302 in the slot is always on the same side as the perpendicular line of the filter screen 12 and the hinge axis of the push plate 1302.

[0023] Water flows through the filter screen 12 and enters the mud inlet pipe 4. Under the action of the water flow, the angle between the push plate 1302 and the filter screen 12 within the coverage area of ​​the mud inlet pipe 4 reaches its maximum value. Water flows through the filter screen 12 and is discharged. Under the action of the water flow, the angle between the push plate 1302 and the filter screen 12 within the coverage area of ​​the drain pipe 10 reaches its minimum value. The pushing force on the push plate 1302 within the coverage area of ​​the drain pipe 10 is greater than the pushing force on the push plate 1302 within the coverage area of ​​the mud inlet pipe 4, and the filter screen 12 rotates under the action of the push plate 1302.

[0024] like Figure 1 and Figure 2 The buckle 1301 and push plate 1302 shown are located on the side of the filter screen 12 facing the drain pipe 10 and the mud inlet pipe 4; to prevent water plants and other impurities from getting tangled on the buckle 1301 and push plate 1302 and affecting the rotation of the filter screen 12.

[0025] like Figure 1 and Figure 2 The filter screen 12 shown has a conical structure on the side away from the drain pipe 10 and the mud inlet pipe 4, and the top of the conical structure is away from the drain pipe 10 and the mud inlet pipe 4.

[0026] Water flows through the filter screen 12 and enters the mud inlet pipe 4 or the water inlet pipe 8. Impurities on the outside of the filter screen 12 slide along the conical surface under the action of the water flow and gradually detach from the filter screen 12.

[0027] In actual production, the drive mechanism A3 is activated, which drives the piston 2 to move toward the backflushing chamber 102. The pressure in the sludge removal chamber 101 decreases, the one-way check valve B7 closes, and the mud in the water passes through the filter screen 12 into the mud inlet pipe 4, and then through the one-way check valve A5 into the sludge removal chamber 101. Larger impurities in the mud remain on the outside of the filter screen 12. At the same time, the pressure in the backflushing chamber 102 increases, the one-way check valve C9 closes, and the water in the backflushing chamber 102 passes through the one-way check valve D11 into the drain pipe 10, and then through the filter screen 12 to backflush the impurities on the outside of the filter screen 12. The impurities on the outside of the filter screen 12 are removed from the filter screen 12.

[0028] Water flows through the filter screen 12 and into the mud inlet pipe 4. Under the action of the water flow, the angle between the push plate 1302 and the filter screen 12 within the coverage area of ​​the mud inlet pipe 4 reaches its maximum value. Water flows through the filter screen 12 and is discharged. Under the action of the water flow, the angle between the push plate 1302 and the filter screen 12 within the coverage area of ​​the drain pipe 10 reaches its minimum value. The pushing force on the push plate 1302 within the coverage area of ​​the drain pipe 10 is greater than the pushing force on the push plate 1302 within the coverage area of ​​the mud inlet pipe 4. The filter screen 12 rotates under the action of the push plate 1302, and the parts of the mud inlet pipe 4 and the drain pipe 10 that contact the filter screen 12 are constantly alternating.

[0029] When the drive mechanism A3 is activated, the piston 2 moves toward the sludge chamber 101, increasing the pressure inside the sludge chamber 101. The one-way check valve A5 closes, and the sludge in the sludge chamber 101 passes through the one-way check valve B7 into the sludge discharge pipe 6 and is discharged to the water surface. At the same time, the pressure inside the backwash chamber 102 decreases, and the one-way check valve D11 closes. The sludge in the water passes through the filter screen 12 into the inlet pipe 8 and then through the one-way check valve C9 into the backwash chamber 102. Larger impurities in the sludge remain on the outside of the filter screen 12.

[0030] Water flows through the filter screen 12 and enters the mud inlet pipe 4 or the water inlet pipe 8. Impurities on the outside of the filter screen 12 slide along the conical surface under the action of the water flow and gradually detach from the filter screen 12.

[0031] Of course, the above description is not limited to the examples above. Technical features of this utility model not described can be implemented by or using existing technology, and will not be repeated here. The above embodiments and drawings are only used to illustrate the technical solution of this utility model and are not intended to limit this utility model. This utility model has been described in detail with reference to preferred embodiments. Those skilled in the art should understand that any changes, modifications, additions or substitutions made by those skilled in the art within the scope of this utility model do not depart from the spirit of this utility model and should also fall within the protection scope of the claims of this utility model.

Claims

1. A piston-type pneumatic sludge pump, comprising a sludge-cleaning box (1), a piston (2) slidingly disposed inside the sludge-cleaning box (1), and a drive mechanism A (3) for driving the piston (2) to reciprocate; the sludge-cleaning box (1) is connected to a sludge inlet pipe (4) and a sludge outlet pipe (6), a one-way check valve A (5) with its opening facing the sludge-cleaning box (1) is disposed inside the sludge inlet pipe (4), and a one-way check valve B (7) with its opening facing away from the sludge-cleaning box (1) is disposed inside the sludge outlet pipe (6); characterized in that: Piston (2) divides sludge box (1) into sludge chamber (101) and backflushing chamber (102). Sludge chamber (101) is connected to mud inlet pipe (4) and mud outlet pipe (6). Backflushing chamber (102) is connected to water inlet pipe (8) and water outlet pipe (10). Water inlet pipe (8) and mud inlet pipe (4) are connected. Water inlet pipe (8) is equipped with a one-way check valve C (9) with its opening facing sludge box (1). Water outlet pipe (10) is equipped with a one-way check valve D (11) with its opening facing away from sludge box (1). Filter screen (12) is provided at the end of water outlet pipe (10) and mud inlet pipe (4) away from sludge box (1). Drive mechanism B (13) for driving filter screen (12) to rotate is provided on sludge box (1).

2. The piston-type pneumatic sludge pump according to claim 1, characterized in that: The drive mechanism B (13) includes a push plate (1302) that is hinged to the filter screen (12) by a buckle (1301) and arranged in sequence around the rotation axis of the filter screen (12). The hinge axis of the push plate (1302) intersects or is not in the same plane as the rotation axis of the filter screen (12). The buckle (1301) has a slot extending around the hinge axis of the push plate (1302). The angle formed by one end of the slot and the perpendicular line of the filter screen (12) is greater than the angle formed by the other end of the slot and the perpendicular line of the filter screen (12). The angles formed by both ends of the slot and the perpendicular line of the filter screen (12) are less than 90° respectively.

3. The piston-type pneumatic sludge pump according to claim 2, characterized in that: The clip (1301) and push plate (1302) are located on the side of the filter screen (12) facing the drain pipe (10) and the mud inlet pipe (4).

4. The piston-type pneumatic sludge pump according to claim 1, characterized in that: The side of the filter screen (12) away from the drain pipe (10) and the mud inlet pipe (4) is a conical structure, and the top of the conical structure is away from the drain pipe (10) and the mud inlet pipe (4).

Images