Bidirectional sludge feeding pneumatic pump and dredging method thereof
By designing a two-way mud inlet pneumatic pump and switching the working and non-working modes of mud inlet passages using the opening and closing mechanism, the problem that existing pneumatic pumps cannot achieve continuous operation is solved, and the working efficiency and time utilization are significantly improved.
Patent Information
- Application Number
- CN202411546201.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-01
- Publication Date
- 2025-03-07
AI Technical Summary
The existing pneumatic pumps cannot achieve continuous operation during the dredging construction process, and cannot be dredged during the reverse traction process, resulting in low time utilization and low working efficiency, which increases the construction cycle and cost.
A two-way mud inlet pneumatic pump is designed, with a first mud inlet passage and a second mud inlet passage, and the switching between two states is achieved through the opening and closing mechanism. When one side channel is working, the other side channel is in a non-working state and remains normally closed.
It is realized that the pneumatic pump can still perform dredging operations during reverse traction, extending the actual effective working time, improving work efficiency, and reducing dredging costs and construction cycle.
Smart Images
Figure CN119572452A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to dredging and desilting equipment, and in particular to a pneumatic desilting pump with a bidirectional mud inlet and a desilting method thereof. Background Art
[0002] As we all know, pneumatic dredging pumps are widely used in underwater environmental dredging projects. They use compressed air as a power source to press out the mud that has entered the pump body under the action of water level pressure difference. However, the current pneumatic pumps cannot perform continuous dredging operations during the actual dredging construction process, and the time utilization rate is low, which greatly reduces the actual working efficiency of the pneumatic pumps.
[0003] The front end of the current pneumatic pump is equipped with a mud inlet, which is responsible for collecting and transporting the dredged silt into the pump body of the pneumatic pump. When the pneumatic pump is used for dredging operations, the dredging process of anchor pulling and strip-shaped zoning construction is adopted. First, the dredging area is divided into several strips of dredging belts according to the width of the pneumatic pump mud inlet, and then the pneumatic pump is lowered into the silt layer at the starting dredging position of the first dredging belt through a hanger or a cantilever, and then the pneumatic pump is pulled forward by the anchor chain. The silt at the front end of the pneumatic pump enters the pump body through the mud inlet under the suction and pushing action of the pneumatic pump. When the pneumatic pump moves forward to the end position of the first dredging belt, it is necessary to pull the pneumatic pump out of the mud surface, and then reversely pull the pneumatic pump to the starting position of dredging, and then move sideways to another adjacent dredging belt, and lower the pneumatic pump into the silt to start dredging in the second dredging belt from the starting position of the adjacent dredging belt. During the entire process of reverse traction of the pneumatic pump, the pneumatic pump is in a non-working state and cannot perform dredging operations. After the silt in each dredging belt is cleared to the end, it takes dozens of minutes to pull the pneumatic pump in the reverse direction to the starting position before the next dredging operation can be started. The time spent on this reverse pulling of the pneumatic pump accounts for as much as 30%-40% of the entire pneumatic pump dredging working time, which makes the time that the pneumatic pump is actually used for actual dredging per unit working time low, greatly reducing the effective working time and actual utilization efficiency of the pneumatic pump, and increasing the construction period and operating cost of pneumatic pump dredging. For this reason, a dredging equipment and dredging method that can extend the actual effective working time of the existing pneumatic pump and improve the working efficiency of the existing pneumatic pump is needed. Summary of the invention
[0004] The purpose of the present invention is to provide a bidirectional mud-feeding pneumatic pump and a dredging method thereof in view of the above problems. The bidirectional mud-feeding pneumatic pump has a simple structure and is easy to manufacture. It can realize bidirectional continuous dredging during the dredging operation. During the process of pulling the pneumatic pump in the reverse direction, the pneumatic pump can still perform normal dredging operations, which greatly increases the actual effective working time of the pneumatic pump and improves the actual working efficiency of the pneumatic pump.
[0005] The objective of the present invention is achieved through the following technical solutions: A bidirectional mud-feeding pneumatic pump, comprising a hollow pump body, a mud-feeding channel opened on the side wall of the pump body, and an opening and closing mechanism that can open or close the mud-feeding channel, characterized in that: the mud-feeding channel comprises a first mud-feeding channel and a second mud-feeding channel, the first mud-feeding channel and the second mud-feeding channel are respectively located on the corresponding two side walls of the pump body; the mud-feeding channel has two states, a working state and a non-working state, and when one of the mud-feeding channels is in a working state, the other mud-feeding channel must be in a non-working state.
[0006] Furthermore, the bidirectional mud-feeding pneumatic pump is characterized in that: when the mud-feeding channel faces the mud that needs to be dredged, it is in a working state, and when the mud-feeding channel faces away from the mud that needs to be dredged, it is in a non-working state.
[0007] Furthermore, the bidirectional mud-feeding pneumatic pump is characterized in that, in a non-operating state, the mud-feeding channel is always kept normally closed under the action of the opening and closing mechanism.
[0008] Furthermore, the bidirectional mud-feeding pneumatic pump is characterized in that the opening and closing mechanism is one of an electric valve, a pneumatic valve or a hydraulic valve.
[0009] Furthermore, the bidirectional mud-feeding pneumatic pump is characterized in that the opening and closing mechanism includes a one-way valve and an actuator.
[0010] Furthermore, the bidirectional mud-feeding pneumatic pump is characterized in that the one-way valve remains normally closed under the limiting action of the actuator.
[0011] Furthermore, the bidirectional mud-feeding pneumatic pump is characterized in that the one-way valve opens or closes the mud-feeding channel under the push-pull action of the actuator.
[0012] Furthermore, the bidirectional mud-feeding pneumatic pump is characterized in that the one-way valve is a flap valve or a ball valve.
[0013] Furthermore, the dredging method of the bidirectional mud-feeding pneumatic pump is characterized in that: within a given dredging operation range, the dredging area is divided into a plurality of strip dredging belts according to the suction width of the pneumatic pump; during dredging, the pneumatic pump is first lowered to the starting position of the first dredging belt, and the dredging sludge is sucked in a straight line from the starting position to the ending position in the first dredging belt; when the pneumatic pump is advanced to the ending position of the first dredging belt, the pneumatic pump is laterally translated into the adjacent second dredging belt, and the corresponding position of the second dredging belt adjacent to the ending position of the first dredging belt becomes the dredging starting position of the second dredging belt, and the pneumatic pump starts to advance dredging in the second dredging belt in the opposite direction; after the sludge in the second dredging belt is cleared, the dredging is switched to the adjacent third dredging belt in the same way as above, and so on until all the sludge in the dredging area is cleared.
[0014] Furthermore, the dredging method of the bidirectional mud-feeding pneumatic pump is characterized in that: when the pneumatic pump is pushed forward and dredged in a straight line in the dredging belt, the first mud-feeding channel facing the dredging direction is in a working state, and the second mud-feeding channel facing away from the dredging direction is in a non-working state, and the second mud-feeding channel is always in a closed state in the non-working state. The working process of the first mud-feeding channel in a working state is as follows: when the pump body moves forward in a straight line in the dredging belt, the first mud-feeding channel is opened, and the mud in the forward direction of the pneumatic pump is sucked into the pump body through the mud inlet and the first mud-feeding channel; after the mud fills the pump body, the first mud-feeding channel is closed, and the air compressor injects high-pressure air into the pump body through the vent pipe to push the mud out of the pump body through the mud discharge pipe; after the mud in the pump body is emptied, the high-pressure air in the pump body is discharged from the vent pipe, and then the first mud-feeding channel is opened again, and the mud at the front end of the pump body enters the pump body again to start the next mud-feeding and discharging process. When the silt in one dredging belt is cleared, the pump body moves laterally to another adjacent dredging belt to start dredging. The second dredging channel begins to face the dredging direction and is in a working state to perform the above-mentioned working process; the first dredging channel begins to face away from the dredging direction and is in a non-working state and remains in a normally closed state.
[0015] The bidirectional mud-feeding pneumatic pump of the present invention can realize bidirectional continuous dredging operation in actual dredging and desilting projects. During the process of reverse traction of the pneumatic pump, the pneumatic pump can still perform normal dredging operations, which greatly increases the actual effective working time of the pneumatic pump, improves the actual working efficiency of the pneumatic pump, reduces the actual cost of dredging by the pneumatic pump, and shortens the dredging construction period of the pneumatic pump. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 It is a structural stereogram of embodiment 1 of the present invention.
[0017] Figure 2 It is a partial sectional right view of embodiment 1 of the present invention.
[0018] Figure 3 It is a front view of embodiment 1 of the present invention.
[0019] Figure 4 It is a top view of embodiment 1 of the present invention.
[0020] Figure 5 It is a structural stereogram of embodiment 2 of the present invention.
[0021] Figure 6 It is a partial sectional right view of embodiment 2 of the present invention.
[0022] Figure 7 It is a front view of embodiment 2 of the present invention.
[0023] Figure 8 It is a top view of embodiment 2 of the present invention.
[0024] Fig. 9 It is a structural stereogram of embodiment 3 of the present invention.
[0025] Fig.10 It is a right view of embodiment 3 of the present invention.
[0026] Fig.11 It is a front view of embodiment 3 of the present invention.
[0027] Fig.12 It is a top view of embodiment 3 of the present invention. DETAILED DESCRIPTION
[0028] The present invention will be further described below in conjunction with the accompanying drawings.
[0029] Example 1, see attached Figure 1-4 The bidirectional mud-feeding pneumatic pump comprises a hollow pump body 1, mud-feeding channels 2.1 and 2.2 provided on the front and rear side walls of the pump body 1, and a mud inlet 6 formed by extending the mud-feeding channels. The mud-feeding channels 2.1 and 2.2 are provided with flap-type one-way valves 3.1. The front and rear side walls of the pump body 1 are also provided with cylinders 3.2. When the piston rod 3.2.1 in the cylinder 3.2 is extended, the cover plate of the one-way valve 3.1 can be pressed against the sealing surface of the mud-feeding channel 2.1 or 2.2, thereby closing the mud-feeding channel 2.1 or 2.2. A vent pipe 4 and a mud-discharging pipe 5 extend from the top of the pump body 1. The mud inlet channel 2.1 or 2.2 has two states: working state and non-working state. When one of the mud inlet channels is in the non-working state, the piston rod 3.2.1 always presses the cover plate of the one-way valve 3.1 on the mud inlet channel against the sealing surface of the mud inlet channel to keep the mud inlet channel normally closed; when one of the mud inlet channels is in the working state, the corresponding piston rod 3.2.1 retracts into the cylinder 3.2; when one of the mud inlet channels is in the working state, the other mud inlet channel must be in the non-working state.
[0030] When performing dredging operations, within a given dredging operation range, the dredging area is divided into a number of strip dredging belts according to the width of the mud inlet 6 of the bidirectional mud inlet pneumatic pump; during dredging, the pneumatic pump is first lowered to the starting position of the first dredging belt, and the sludge is sucked straightly from the starting position to the ending position in the first dredging belt; when the pneumatic pump is pushed to the ending position of the first dredging belt, the pneumatic pump is laterally translated to the adjacent second dredging belt, and the corresponding position of the second dredging belt adjacent to the ending position of the first dredging belt becomes the dredging starting position of the second dredging belt, and the pneumatic pump starts to push the dredging in the second dredging belt in the opposite direction; after the sludge in the second dredging belt is cleared, the dredging is switched to the third dredging belt in the same way as above, and so on until all the sludge in the dredging area is cleared.
[0031] When the bidirectional mud-feeding pneumatic pump is pushed forward and dredged in a straight line in the dredging belt, the first mud-feeding channel 2.1 facing the dredging direction is first in a working state, and the corresponding piston rod 3.2.1 is retracted into the cylinder 3.2; the second mud-feeding channel 2.2 facing away from the dredging direction is in a non-working state, and the cover plate of the one-way valve 3.1 in the second mud-feeding channel 2.2 is always pressed against the sealing surface of the second mud-feeding channel 2.2 under the push of the piston rod 3.2.1, so that the second mud-feeding channel 2.2 is always in a closed state. The working process of the first mud inlet channel 2.1 in the working state is as follows: when the pump body 1 moves straight forward in the dredging belt, the cover plate of the one-way valve 3.1 on the first mud inlet channel 2.1 is opened under the action of the pressure difference between the inside and outside of the pump body 1, the first mud inlet channel 2.1 is opened, and the mud in the forward direction of the pneumatic pump is sucked into the pump body 1 through the mud inlet port 6 and the first mud inlet channel 2.1; after the mud fills the pump body 1, the cover plate of the one-way valve 3.1 on the first mud inlet channel 2.1 closes the first mud inlet channel 2.1 under the action of its own gravity, and the air compressor injects high-pressure air into the pump body 1 through the vent pipe 4 to push the mud out of the pump body 1 through the mud discharge pipe 5; after the sludge in the pump body 1 is emptied, the high-pressure air in the pump body 1 is discharged from the vent pipe 4, at this time, the cover plate of the one-way valve 3.1 on the first mud inlet channel 2.1 is opened again under the action of the pressure difference between the inside and outside of the pump body 1, and the mud at the front end of the pump body 1 enters the pump body 1 again to start the next mud inlet and discharge process. When the silt in one dredging belt is cleared, the pump body 1 moves laterally to another adjacent dredging belt to start dredging, and the second silt inlet channel 2.2 begins to face the dredging direction and is in a working state to perform the working process of the above working state; the first silt inlet channel 2.1 begins to face away from the dredging direction and is in a non-working state and remains in a normally closed state.
[0032] Example 2, see attached Figure 5-8 , a two-way mud inlet pneumatic pump, the one-way valve 3.1 is a ball valve, and the sealing ball in the one-way valve 3.1 can seal the sealing surface of the corresponding mud inlet channel under the extrusion of the piston rod 3.2.1. The rest of the structure and dredging process refer to Example 1.
[0033] Example 3, see attached Figure 9-12 The bidirectional mud inlet pneumatic pump comprises a hollow pump body 1, mud inlet channels 2.1 and 2.2 opened on the front and rear side walls of the pump body 1, and a mud inlet port 6 formed by extending the mud inlet channels. The mud inlet channels 2.1 and 2.2 are provided with electric control valves 3; the vent pipe 4 and the mud discharge pipe 5 extend from the top of the pump body 1. The mud inlet channel 2.1 or 2.2 has two states: working state and non-working state. When one of the mud inlet channels is in the non-working state, the electric control valve 3 is always closed, so that the mud inlet channel remains normally closed; when one of the mud inlet channels is in the working state, the other mud inlet channel must be in the non-working state.
[0034] When the bidirectional mud-feeding pneumatic pump is pushed forward and dredged in a straight line in the dredging belt, the first mud-feeding channel 2.1 facing the dredging direction is first in a working state, and the second mud-feeding channel 2.2 facing away from the dredging direction is in a non-working state; the electric control valve 3 on the second mud-feeding channel 2.2 in a non-working state is always closed, so that the second mud-feeding channel 2.2 is always in a closed state. The working process of the first mud inlet channel 2.1 in the working state is as follows: when the pump body 1 moves straight forward in the dredging belt, the electric control valve 3 on the first mud inlet channel 2.1 is opened, and the first mud inlet channel 2.1 is opened, and the mud in the forward direction of the pneumatic pump is sucked into the pump body 1 through the mud inlet port 6 and the first mud inlet channel 2.1; after the mud fills the pump body 1, the electric control valve 3 on the first mud inlet channel 2.1 is closed, and the air compressor injects high-pressure air into the pump body 1 through the vent pipe 4 to push the silt out of the pump body 1 through the mud discharge pipe 5; after the silt in the pump body 1 is emptied, the high-pressure air in the pump body 1 is discharged from the vent pipe 4, and at this time the electric control valve 3 on the first mud inlet channel 2.1 is opened again, and the mud at the front end of the pump body 1 enters the pump body 1 again to start the next mud inlet and discharge process. When the silt in one dredging belt is cleared, the pump body 1 moves laterally to another adjacent dredging belt to start dredging, and the second silt inlet channel 2.2 begins to face the dredging direction and is in a working state to perform the working process of the above working state; the first silt inlet channel 2.1 begins to face away from the dredging direction and is in a non-working state and remains in a normally closed state.
[0035] Although the present invention has been described in detail using specific embodiments, it will be apparent to those skilled in the art that various changes can be made without departing from the spirit and scope of the present invention.
Claims
1. A two-way mud-feeding pneumatic pump, comprising a hollow pump body (1), a mud-feeding channel (2) provided on a side wall of the pump body, and an opening and closing mechanism (3) capable of opening or closing the mud-feeding channel (2), characterized in that: The mud inlet channel (2) comprises a first mud inlet channel (2.1) and a second mud inlet channel (2.2), the first mud inlet channel (2.1) and the second mud inlet channel (2.2) being respectively located on two corresponding side walls of the pump body (1); the mud inlet channel (2) has two states, a working state and a non-working state, and when one of the mud inlet channels is in a working state, the other mud inlet channel must be in a non-working state.
2. The bidirectional mud-feeding pneumatic pump according to claim 1, characterized in that: When the mud inlet channel (2) faces the mud that needs to be dredged, it is in a working state, and when the mud inlet channel (2) faces away from the mud that needs to be dredged, it is in a non-working state.
3. The bidirectional mud-feeding pneumatic pump according to claim 1, characterized in that: In a non-working state, the mud inlet channel (2) is always kept normally closed under the action of the opening and closing mechanism (3).
4. The bidirectional mud-feeding pneumatic pump according to claim 1, characterized in that: The opening and closing mechanism (3) is an electric valve, a pneumatic valve or a hydraulic valve.
5. The bidirectional mud-feeding pneumatic pump according to claim 1, characterized in that: The opening and closing mechanism (3) comprises a one-way valve (3.1) and an actuator (3.2).
6. The bidirectional mud-feeding pneumatic pump according to claim 5, characterized in that: The one-way valve (3.1) remains normally closed under the limiting action of the actuator (3.2).
7. The bidirectional mud-feeding pneumatic pump according to claim 5, characterized in that: The one-way valve (3.1) opens or closes the mud inlet channel (2) under the push and pull action of the actuator (3.2).
8. The bidirectional mud-feeding pneumatic pump according to claim 5, characterized in that: The one-way valve (3.1) is a flap valve or a ball valve.
9. The dredging method of the bidirectional mud-feeding pneumatic pump according to claim 1, characterized in that: In a given dredging operation range, the dredging area is divided into several strip dredging belts according to the suction width of the pneumatic pump; during dredging, the pneumatic pump is first lowered to the starting position of the first dredging belt, and the sludge is sucked straightly from the starting position to the ending position in the first dredging belt; when the pneumatic pump is pushed to the ending position of the first dredging belt, the pneumatic pump is laterally translated to the adjacent second dredging belt, and the corresponding position of the second dredging belt adjacent to the ending position of the first dredging belt becomes the dredging starting position of the second dredging belt, and the pneumatic pump starts to push the dredging in the opposite direction in the second dredging belt; after the sludge in the second dredging belt is cleared, the dredging is switched to the adjacent third dredging belt in the same way as above, and so on until all the sludge in the dredging area is cleared.
10. The dredging method of the bidirectional mud-feeding pneumatic pump according to claim 9, characterized in that: When the pneumatic pump is pushed forward in the dredging belt to dredge straight, the first dredging channel (2.1) facing the dredging direction is in a working state, and the second dredging channel (2.2) facing away from the dredging direction is in a non-working state. In the non-working state, the second dredging channel (2.2) is always in a closed state. The working process of the first mud inlet channel (2.1) in the working state is as follows: when the pump body (1) moves straight forward in the dredging belt, the first mud inlet channel (2.1) is opened, and the mud in the forward direction of the pneumatic pump is sucked into the pump body (1) through the mud inlet port (6) and the first mud inlet channel (2.1); after the mud fills the pump body (1), the first mud inlet channel (2.1) is closed, and the air compressor injects high-pressure air into the pump body (1) through the vent pipe (4) to push the mud out of the pump body (1) through the mud discharge pipe (5); after the mud in the pump body (1) is emptied, the high-pressure air in the pump body (1) is discharged from the vent pipe (4), and then the first mud inlet channel (2.1) is opened again, and the mud at the front end of the pump body (1) enters the pump body (1) again to start the next mud inlet and discharge process. When the silt in one silt removal zone is completely removed, the pump body (1) is laterally translated to another adjacent silt removal zone to start silting, and the second silt inlet channel (2.2) begins to face the silt removal direction and is in a working state to perform the above-mentioned working process; the first silt inlet channel (2.1) begins to face away from the silt removal direction and is in a non-working state to remain in a normally closed state.