A mud pump device for a cutter suction dredger

Abstract

The present invention relates to the technical field of mud pumps, and discloses a mud pump device for a cutter suction dredger, including a mud pump device, wherein the mud pump device includes a mud pump body, an output pipe is installed on the side of the mud pump body, an input pipe is installed on the mud pump body at a position away from the output pipe, a delivery pipe is installed on the side of the input pipe, a debris removal mechanism is installed on the delivery pipe at a position away from the input pipe, a compressed air supply device is installed on the side of the debris removal mechanism, and a metal adsorption device is installed on the bottom of the debris removal mechanism. The present invention is provided with a debris removal mechanism, which is conducive to the scraping and cleaning of impurities to the inside of a storage cylinder for storage management, so as to achieve the effect of automatically cleaning the residual impurities on the surface of the filter plate. The present invention is provided with a metal adsorption device, which is conducive to the staff to recover metal impurities, ensure that the electromagnet can normally perform the metal impurity adsorption operation, and avoid the metal impurities from damaging the crushing device and the mud pump device.

Description

Technical Field

[0001] The present invention relates to the technical field of slurry pumps, and more particularly to a slurry pump device for a cutter suction dredger. Background Art

[0002] The slurry pump is one of the devices for dredging of a cutter suction dredger. The common slurry pump mainly consists of mechanisms such as a pump head, a sealing system assembly, a bearing assembly, a bracket, and a power supply device. The specific working process of the slurry pump for dredging is as follows: When the slurry pump starts to work, the power supply device drives the impeller to rotate in the pump casing. The rotation of the impeller generates centrifugal force, causing a vacuum to form in the central part of the impeller. Then, the slurry is sucked into the center of the slurry pump through the suction pipeline. As the impeller continues to rotate, the slurry is thrown away from the impeller by the centrifugal force and shoots in all directions. The slurry flows in the pump casing and is discharged from the slurry pump through the outlet pipeline. The flow rate and pressure of the slurry pump can be achieved by adjusting factors such as the rotational speed of the impeller, the shape and size of the pump casing.

[0003] During the use of the slurry pump on the cutter suction dredger, various large impurities appear at the bottom of the river silt, which causes certain damage to the components of the slurry pump. To avoid the above situation, a crushing device is installed at the inlet of the suction pipeline to perform crushing operations on the large impurities to prevent the large impurities from damaging the internal components of the slurry pump. However, there are a certain amount of metal impurities in the river bottom silt, which causes certain damage to the crushing device. In the prior art, there is no preventive treatment for this phenomenon, resulting in certain damage to the crushing device and the slurry pump, and thus causing certain economic losses. At the same time, during the operation of the crushing device, some impurities may not be crushed thoroughly, so large impurities enter the internal of the slurry pump, causing certain damage to the components of the slurry pump. To avoid the above situation, a filter plate is installed inside the suction pipeline to filter large impurities. However, the large impurities accumulate on the surface of the filter plate, affecting the filtering effect of the filter plate and reducing the working efficiency of the slurry pump. Summary of the Invention

[0004] In order to overcome the above-mentioned defects of the prior art, the present invention provides a slurry pump device for a cutter suction dredger to solve the problems existing in the above background art.

[0005] The present invention provides the following technical solutions: A slurry pump device for a cutter suction dredger, including a slurry pump device. The slurry pump device includes a slurry pump main body. An output pipeline is installed on the side of the slurry pump main body. An input pipeline is installed at a position of the slurry pump main body far from the output pipeline. A conveying pipeline is installed on the side of the input pipeline. An impurity removal mechanism is installed at a position of the conveying pipeline far from the input pipeline. A compressed air supply device is installed on the side of the impurity removal mechanism. A metal adsorption device is installed at the bottom of the impurity removal mechanism.

[0006] Furthermore, the impurity removal mechanism includes an impurity removal device. An annular frame is installed on the inner wall of the impurity removal device. A filter plate is movably sleeved on the inner wall of the annular frame. A first extrusion column is installed on the top of the filter plate. The outer wall of the top of the first extrusion column is movably sleeved with a first hollow column. A first spring is installed on the top of the first extrusion column. A first sensor is installed on the inner wall of the first hollow column near the first spring.

[0007] Furthermore, an outer shell is installed on the outer wall of the impurity removal device near the filter plate. A first electric control lifting column is installed on the inner wall of the outer shell. A first partition board is installed on the inner wall of the outer shell near the first electric control lifting column. A telescopic scraping plate is installed on the side of the first electric control lifting column. The telescopic scraping plate is composed of two sets of scraping support plates sleeved together. A long spring is installed inside the telescopic scraping plate, which is beneficial to driving the telescopic scraping plate to be in a stretched state. When the telescopic scraping plate contacts the filter plate, it scrapes and cleans the residual impurities on the surface of the filter plate. A storage cylinder is installed on the side of the impurity removal device. A baffle is installed on the inner wall of the top of the storage cylinder. There are torsion spring devices at both ends of the baffle, which is beneficial to driving the rotating baffle to return to its original position.

[0008] Furthermore, a main conveying pipe is installed through the bottom of the impurity removal device. A crushing device is installed on the inner wall of the bottom of the main conveying pipe to crush the impurities.

[0009] Furthermore, the compressed air supply device includes an air pump. A first conveying hose is installed at the output end of the air pump. A second conveying hose is installed at the position of the first conveying hose far from the air pump. A Y-shaped pipe is installed at the bottom of the second conveying hose. Two solenoid valves are installed at the bottom of the Y-shaped pipe. An auxiliary conveying pipe is installed on the inner wall of the Y-shaped pipe near one of the solenoid valves.

[0010] Furthermore, the metal adsorption device includes a circular plate. A transmission rod is connected through the outer wall of the circular plate. A telescopic column is installed on the side of the transmission rod. The telescopic column is composed of multiple sets of hollow columns sleeved together. The compressed air supply device generates compressed air and conveys it into the telescopic column to drive the telescopic column to be in a stretched state. A servo motor is installed on the outer wall of the telescopic column far from the transmission rod, and the servo motor drives the telescopic column to rotate.

[0011] Furthermore, a hollow plate is installed at the bottom of the telescopic column. An extrusion plate is sleeved on the inner wall of the hollow plate. An electromagnet is installed at the bottom of the extrusion plate. A power supply device is installed at the top of the extrusion plate. The power supply device inputs a fixed amount of current to the electromagnet to control the electromagnet to generate magnetic attraction. A compressed air ring is installed on the outer wall of the hollow plate. Second springs are installed at the four corners of the top of the extrusion plate. An extrusion support rod is installed at the top of the extrusion plate near the power supply device, and a second sensor is arranged at the top of the extrusion support rod.

[0012] Technical effects and advantages of the present invention:

[0013] 1. By providing an impurity removal mechanism in the present invention, it is beneficial for the impurities that are not thoroughly pulverized to stay on the surface of the filter plate. Driven by the sludge flowing inside the main conveying pipe, the uncrushed impurities apply an extrusion force to the filter plate. When the weight of the impurities staying on the surface of the filter plate exceeds the rated value, the extrusion force generated by the impurities will drive the filter plate and the first extrusion column to contact the first sensor, so as to detect that the amount of impurities on the surface of the filter plate exceeds the rated value. Control the input current of the first electric control lifting column, control the telescopic scraping plate to move out of the interior of the housing, and under the action of the long spring, drive the telescopic scraping plate to be in the stretching device, so as to scrape and clean the impurities on the surface of the filter plate. The impurities after cleaning are driven by the telescopic scraping plate, and through the extrusion baffle, drive the baffle to be in the open state, so as to convey the scraped and cleaned impurities into the storage cylinder for storage management, so as to achieve the function of automatically cleaning the residual impurities on the surface of the filter plate.

[0014] 2. By providing a metal adsorption device in the present invention, when the metal impurities adsorbed on the surface of the electromagnet exceed the rated value, it drives the extrusion plate and the extrusion support rod to move downward, and the extrusion support rod no longer contacts the second sensor. At this time, it is judged that the metal impurities adsorbed on the surface of the electromagnet exceed the rated value. The input current of the servo motor drives the telescopic column to rotate, and at the same time, the compressed air supply device inputs compressed air into the telescopic column and the compressed air ring, driving the compressed air ring to be in the inflated state, so as to generate buoyancy and assist the hollow plate to move towards the impurity removal device. At the same time, the telescopic column is in the stretched state, which is beneficial to control the hollow plate to move near the impurity removal device, facilitating the staff to recycle the metal impurities and ensuring that the electromagnet can normally perform the metal impurity adsorption operation, avoiding damage to the pulverizing device and the mud pump device caused by metal impurities. Description of the drawings

[0015] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0016] Figure 2 It is a schematic diagram of the overall structure of the impurity removal mechanism of the present invention.

[0017] Figure 3 It is a schematic sectional view of the overall structure of the impurity removal device of the present invention.

[0018] Figure 4 It is a schematic sectional view of the overall structure of the housing of the present invention.

[0019] Figure 5 It is a schematic diagram of the overall structure of the storage cylinder of the present invention.

[0020] Figure 6 It is a schematic sectional view of the overall structure of the annular frame of the present invention.

[0021] Figure 7 This is a schematic cross-sectional view of the overall structure of the first hollow column of the present invention.

[0022] Figure 8 This is a schematic view of the overall structure of the circular plate of the present invention.

[0023] Figure 9 This is a schematic cross-sectional view of the overall structure of the telescopic column of the present invention.

[0024] Figure 10 This is a schematic cross-sectional view of the overall structure of the hollow plate of the present invention.

[0025] The reference numerals are: 1, mud pump device; 101, mud pump main body; 102, output pipeline; 103, input pipeline; 104, conveying pipeline; 2, impurity removal mechanism; 201, impurity removal device; 202, storage cylinder; 2021, baffle; 203, outer shell; 2031, first electric control lifting column; 2032, first partition board; 2033, telescopic scraping plate; 204, main conveying pipe; 205, annular frame; 206, filter plate; 207, first hollow column; 208, first extrusion column; 209, first spring; 210, first inductor; 3, compressed air supply device; 301, air pump; 302, first conveying hose; 303, second conveying hose; 304, Y-shaped pipe; 305, auxiliary conveying pipe; 4, metal adsorption device; 401, circular plate; 402, telescopic column; 403, servo motor; 404, transmission rod; 405, hollow plate; 406, extrusion plate; 407, electromagnet; 408, compressed air ring; 409, extrusion support rod; 410, second inductor; 411, power supply device; 412, second spring. Detailed implementation manners

[0026] Next, the technical solutions in the present invention will be clearly and completely described in conjunction with the accompanying drawings in the present invention. In addition, the forms of the various structures described in the following embodiments are merely examples, and a mud pump device for a cutter suction dredger according to the present invention is not limited to the various structures described in the following embodiments. All other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present invention.

[0027] Refer to Figure 1 and Figure 2, the present invention provides a slurry pump device for a cutter suction dredger, including a slurry pump device 1. The slurry pump device 1 includes a slurry pump main body 101. An output pipeline 102 is installed on the side of the slurry pump main body 101. An input pipeline 103 is installed at a position of the slurry pump main body 101 far from the output pipeline 102. A conveying pipeline 104 is installed on the side of the input pipeline 103. An impurity removal mechanism 2 is installed at a position of the conveying pipeline 104 far from the input pipeline 103. A compressed air supply device 3 is installed on the side of the impurity removal mechanism 2. A metal adsorption device 4 is installed at the bottom of the impurity removal mechanism 2.

[0028] In the embodiment of the present application, the specific working process of this part of the embodiment is as follows: The cutter suction dredger moves to a designated area. The slurry pump main body 101 inputs current to generate a silt adsorption force, which is conveyed to the inside of the impurity removal mechanism 2 through the input pipeline 103 and the conveying pipeline 104 for silt adsorption operation. During the adsorption process, the metal adsorption device 4 adsorbs metal impurities in the designated area to prevent the metal impurities from damaging the crushing device inside the impurity removal mechanism 2.

[0029] Referring to Figures 1 to 7 As shown, the present invention provides a slurry pump device for a cutter suction dredger. The impurity removal mechanism 2 includes an impurity removal device 201. An annular frame 205 is installed on the inner wall of the impurity removal device 201. A filter plate 206 is movably sleeved on the inner wall of the annular frame 205. A first extrusion column 208 is installed on the top of the filter plate 206. A first hollow column 207 is movably sleeved on the outer wall of the top of the first extrusion column 208. A first spring 209 is installed on the top of the first extrusion column 208. A first sensor 210 is installed on the inner wall of the first hollow column 207 near the first spring 209;

[0030] An outer shell 203 is installed on the outer wall of the impurity removal device 201 near the filter plate 206. A first electric control lifting column 2031 is installed on the inner wall of the outer shell 203. A first partition plate 2032 is installed on the inner wall of the outer shell 203 near the first electric control lifting column 2031. A telescopic scraping plate 2033 is installed on the side of the first electric control lifting column 2031. The telescopic scraping plate 2033 is composed of two sets of scraping support plates sleeved. A long spring is installed inside the telescopic scraping plate 2033, which is beneficial to driving the telescopic scraping plate 2033 to be in a stretched state. When the telescopic scraping plate 2033 contacts the filter plate 206, it scrapes and cleans the impurities staying on the surface of the filter plate 206. A storage cylinder 202 is installed on the side of the impurity removal device 201. A baffle 2021 is installed on the inner wall of the top of the storage cylinder 202. Torsion spring devices are arranged at both ends of the baffle 2021, which is beneficial to driving the rotating baffle 2021 to return to its original position;

[0031] A main conveying pipe 204 is installed through the bottom of the impurity removal device 201, and a crushing device is installed on the inner wall of the bottom of the main conveying pipe 204 to crush impurities.

[0032] Both sides of the telescopic scraping plate 2033 are arc-shaped, which is beneficial for the telescopic scraping plate 2033 to move to the inner wall of the housing 203.

[0033] In the embodiment of the present application, the specific working process of this part of the application embodiment is as follows: The sludge pump device 1 generates a sludge adsorption force and transports it to the inside of the main conveying pipe 204 through the impurity removal device 201 to adsorb the sludge at the bottom of the river. The impurities in the sludge are crushed by the crushing device to avoid damage to the sludge pump device 1 caused by large impurities. At the same time, the uncrushed impurities stay on the surface of the filter plate 206. Driven by the sludge flowing inside the main conveying pipe 204, the uncrushed impurities apply an extrusion force to the filter plate 206. When the weight of the impurities staying on the surface of the filter plate 206 exceeds the rated value, the extrusion force generated by the impurities will drive the filter plate 206 and the first extrusion column 208 to contact the first inductor 210, so as to detect that the amount of impurities on the surface of the filter plate 206 exceeds the rated value. Control the input current of the first electric control lifting column 2031, and control the telescopic scraping plate 2033 to move out of the inside of the housing 203. Under the action of the long spring, drive the telescopic scraping plate 2033 to be in a stretched state, so as to scrape and clean the impurities on the surface of the filter plate 206. The cleaned impurities are driven by the telescopic scraping plate 2033 to drive the baffle plate 2021 to be in an open state through the extrusion baffle 2021, so as to convey the scraped and cleaned impurities to the inside of the storage cylinder 202 for storage management, so as to achieve the effect of automatically cleaning the residual impurities on the surface of the filter plate 206.

[0034] Refer to Figure 2 And Figures 8 to 9 As shown in the figure, the present invention provides a sludge pump device for a cutter suction dredger. The compressed air supply device 3 includes an air pump 301. The output end of the air pump 301 is installed with a first conveying hose 302. The first conveying hose 302 is installed with a second conveying hose 303 at a position far from the air pump 301. The bottom of the second conveying hose 303 is installed with a Y-shaped pipe 304. The bottom of the Y-shaped pipe 304 is installed with two groups of solenoid valves. An auxiliary conveying pipe 305 is installed on the inner wall of the Y-shaped pipe 304 near one group of solenoid valves.

[0035] In the embodiment of the present application, the specific working process of this part of the application embodiment is as follows: The air pump 301 generates compressed air and inputs it into the metal adsorption device 4 through the first conveying hose 302, the second conveying hose 303, the Y-shaped pipe 304 and the auxiliary conveying pipe 305, which is beneficial for the cleaned metal impurities to rise to the position of the impurity removal device 201, facilitating the cleaning operation of the staff.

[0036] Reference Figure 1 And Figures 8 to 10 As shown, the present invention provides a slurry pump device for a cutter suction dredger. The metal adsorption device 4 includes a circular plate 401. A transmission rod 404 is connected through the outer wall of the circular plate 401. A telescopic column 402 is installed on the side of the transmission rod 404. The telescopic column 402 is composed of a plurality of sets of hollow columns sleeved together. The compressed air supply device 3 generates compressed air and conveys it to the inside of the telescopic column 402 to drive the telescopic column 402 to be in a stretched state. A servo motor 403 is installed on the outer wall of the telescopic column 402 at a position far from the transmission rod 404, and the servo motor 403 drives the telescopic column 402 to perform a rotating operation;

[0037] A hollow plate 405 is installed at the bottom of the telescopic column 402. An extrusion plate 406 is sleeved on the inner wall of the hollow plate 405. An electromagnet 407 is installed at the bottom of the extrusion plate 406. A power supply device 411 is installed at the top of the extrusion plate 406. The power supply device 411 inputs a fixed amount of current to the electromagnet 407 to control the electromagnet 407 to generate magnetic suction. A compressed air ring 408 is installed on the outer wall of the hollow plate 405. Four second springs 412 are installed at the four corners of the top of the extrusion plate 406. An extrusion support rod 409 is installed at the top of the extrusion plate 406 near the power supply device 411, and a second sensor 410 is arranged at the top of the extrusion support rod 409.

[0038] In the embodiment of the present application, the specific working process of this part of the application embodiment is as follows: When the slurry pump device 1 performs dredging operations, the power supply device 411 controls the electromagnet 407 to generate magnetism to perform magnetic adsorption and recovery operations on metal impurities near the main delivery pipe 204. When the metal impurities adsorbed on the surface of the electromagnet 407 exceed the rated value, it drives the extrusion plate 406 and the extrusion support rod 409 to move downward, and the extrusion support rod 409 no longer contacts the second sensor 410. At this time, it is judged that the metal impurities adsorbed on the surface of the electromagnet 407 exceed the rated value. The servo motor 403 inputs current to drive the telescopic column 402 to rotate 180 degrees. At the same time, the compressed air supply device 3 inputs compressed air to the telescopic column 402 and the compressed air ring 408 to drive the compressed air ring 408 to be in an inflated state to generate buoyancy to assist the hollow plate 405 to move towards the impurity removal device 201. At the same time, the telescopic column 402 is in a stretched state, which is beneficial to controlling the hollow plate 405 to move near the impurity removal device 201, facilitating the staff to recover metal impurities, ensuring that the electromagnet 407 can normally perform metal impurity adsorption operations, avoiding damage to the crushing device and the slurry pump device 1 caused by metal impurities, and at the same time, the recovered metal impurities can also provide additional economic sources for the staff.

[0039] The specific working process of the present application is as follows:

[0040] Step 1: The cutter suction dredger moves to the designated area. The main mud pump 101 inputs current to generate a silt adsorption force, which is conveyed through the input pipeline 103 and the conveying pipeline 104 to the inside of the impurity removal mechanism 2 for silt adsorption operation. During the adsorption process, the metal adsorption device 4 adsorbs metal impurities in the designated area to prevent the metal impurities from damaging the crushing device inside the impurity removal mechanism 2;

[0041] Step 2: The mud pump device 1 generates a silt adsorption force and conveys it through the impurity removal device 201 to the inside of the main conveying pipe 204 for adsorbing the silt at the river bottom. The impurities in the silt are crushed by the crushing device to prevent large impurities from damaging the mud pump device 1. At the same time, the unthoroughly crushed impurities stay on the surface of the filter plate 206. Driven by the silt flowing inside the main conveying pipe 204, the uncrushed impurities apply a squeezing force to the filter plate 206. When the weight of the impurities staying on the surface of the filter plate 206 exceeds the rated value, the squeezing force generated by the impurities will drive the filter plate 206 and the first extrusion column 208 to contact the first inductor 210, so as to detect that the amount of impurities on the surface of the filter plate 206 exceeds the rated value. Control the input current of the first electric control lifting column 2031 to control the telescopic scraping plate 2033 to move out of the inside of the housing 203. Under the action of the long spring, drive the telescopic scraping plate 2033 to be in a stretched state, so as to perform scraping and cleaning operations on the impurities on the surface of the filter plate 206. The cleaned impurities are driven by the telescopic scraping plate 2033 to drive the extrusion baffle 2021 through the extrusion baffle 2021 to drive the baffle 2021 to be in an open state, so as to convey the scraped and cleaned impurities to the inside of the storage cylinder 202 for storage management, so as to achieve the function of automatically cleaning the residual impurities on the surface of the filter plate 206;

[0042] Step 3: The air pump 301 generates compressed air and inputs it into the metal adsorption device 4 through the first conveying hose 302, the second conveying hose 303, the Y-shaped pipe 304 and the auxiliary conveying pipe 305, which is beneficial to the cleaned metal impurities rising to the position of the impurity removal device 201, facilitating the cleaning operation of the staff;

[0043] When the dredging pump device 1 performs dredging operations, the power supply device 411 controls the electromagnet 407 to generate magnetism for magnetic adsorption and recovery of metal impurities near the main delivery pipe 204. When the metal impurities adsorbed on the surface of the electromagnet 407 exceed the rated value, the extrusion plate 406 and the extrusion support rod 409 are driven to move downward, and the extrusion support rod 409 no longer contacts the second inductor 410. At this time, it is determined that the metal impurities adsorbed on the surface of the electromagnet 407 exceed the rated value. The input current of the servo motor 403 drives the telescopic column 402 to rotate 180 degrees. At the same time, the compressed air supply device 3 inputs compressed air into the telescopic column 402 and the compressed air ring 408, driving the compressed air ring 408 to be in an inflated state to generate buoyancy, assisting the hollow plate 405 to move towards the impurity removal device 201. At the same time, the telescopic column 402 is in a stretched state, which is beneficial to controlling the hollow plate 405 to move near the impurity removal device 201, facilitating the staff to recover metal impurities, ensuring that the electromagnet 407 can normally perform metal impurity adsorption operations, avoiding damage to the crushing device and the dredging pump device 1 caused by metal impurities, and at the same time, the recovered metal impurities can also provide additional economic sources for the staff.

[0044] Finally, the following points should be noted: First, in the description of this application, it should be noted that unless otherwise specified and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense, which can be mechanical connection or electrical connection, or the internal connection of two components, and can be directly connected. "Up", "down", "left", "right", etc. are only used to represent relative position relationships. When the absolute position of the object being described changes, the relative position relationship may change;

[0045] Second: In the drawings of the disclosed embodiments of the present invention, only the structures related to the disclosed embodiments are involved. Other structures can refer to the general design. Without conflict, the same embodiment and different embodiments of the present invention can be combined with each other;

[0046] Finally: The above are only the preferred embodiments of the present invention and are not used to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A mud pump device for a cutter suction dredger, comprising a mud pump device (1), characterized in that: The mud pump device (1) comprises a mud pump body (101), an output pipe (102) is installed on the side of the mud pump body (101), an input pipe (103) is installed on the mud pump body (101) at a position away from the output pipe (102), a delivery pipe (104) is installed on the side of the input pipe (103), a debris removal mechanism (2) is installed on the delivery pipe (104) at a position away from the input pipe (103), a compressed air supply device (3) is installed on the side of the debris removal mechanism (2), and a metal adsorption device (4) is installed at the bottom of the debris removal mechanism (2); The metal adsorption device (4) comprises a circular plate (401), the outer wall of the circular plate (401) is penetrated by a transmission rod (404), a telescopic column (402) is installed on the side of the transmission rod (404), the telescopic column (402) is composed of a plurality of hollow columns connected in a sleeve, the compressed air supply device (3) generates compressed air and delivers it to the inside of the telescopic column (402), driving the telescopic column (402) to be in a stretched state, and a servo motor (403) is installed on the outer wall of the telescopic column (402) at a position away from the transmission rod (404), and the servo motor (403) drives the telescopic column (402) to rotate; A hollow plate (405) is installed at the bottom of the telescopic column (402), an extrusion plate (406) is sleeved on the inner wall of the hollow plate (405), an electromagnet (407) is installed at the bottom of the extrusion plate (406), a power supply device (411) is installed on the top of the extrusion plate (406), the power supply device (411) inputs a quantitative current to the electromagnet (407) to control the electromagnet (407) to generate a magnetic attraction force, a compression air ring (408) is installed on the outer wall of the hollow plate (405), second springs (412) are installed at the four corners of the top of the extrusion plate (406), an extrusion support rod (409) is installed at the top of the extrusion plate (406) near the power supply device (411), and a second sensor (410) is arranged on the top of the extrusion support rod (409).

2. A dredge pump device for a cutter suction dredger according to claim 1, characterized in that: The impurity removal mechanism (2) comprises an impurity removal device (201), an annular frame (205) is installed on the inner wall of the impurity removal device (201), a filter plate (206) is movably sleeved on the inner wall of the annular frame (205), a first extrusion column (208) is installed on the top of the filter plate (206), a first hollow column (207) is movably sleeved on the outer wall of the top of the first extrusion column (208), a first spring (209) is installed on the top of the first extrusion column (208), and a first sensor (210) is installed on the inner wall of the first hollow column (207) at a position close to the first spring (209).

3. A dredge pump device for a cutter suction dredger according to claim 2, characterized in that: The outer wall of the impurity removal device (201) is provided with a shell (203) at a position close to the filter plate (206); the inner wall of the shell (203) is provided with a first electrically-controlled lifting column (2031); the inner wall of the shell (203) is provided with a first partition (2032) at a position close to the first electrically-controlled lifting column (2031); a telescopic scraping plate (2033) is provided on the side of the first electrically-controlled lifting column (2031); the telescopic scraping plate (2033) is composed of two groups of scraping support plates sleeved together; the telescopic scraping plate (2033) is provided with a first partition (2032) at a position close to the first electrically-controlled lifting column (2031); 3) A long spring is installed inside, which is conducive to driving the telescopic scraping plate (2033) to be in a stretched state. The telescopic scraping plate (2033) contacts the filter plate (206) to scrape and clean the residual impurities on the surface of the filter plate (206). The impurity removal device (201) is installed on the side of the storage cylinder (202), and the inner wall of the top of the storage cylinder (202) is installed with a baffle (2021). Torsion spring devices are arranged at both ends of the baffle (221), which is conducive to driving the baffle (2021) in a rotating state to return to its original position.

4. A dredge pump device for a cutter suction dredger according to claim 2, characterized in that: A main conveying pipe (204) is installed through the bottom of the impurity removal device (201), and a crushing device is installed on the inner wall of the bottom of the main conveying pipe (204) to crush the impurities.

5. A dredge pump device for a cutter suction dredger according to claim 1, characterized in that: The compressed air providing device (3) comprises an air pump (301), a first delivery hose (302) is installed at the output end of the air pump (301), a second delivery hose (303) is installed at a position away from the air pump (301) on the first delivery hose (302), a Y-shaped tube (304) is installed at the bottom of the second delivery hose (303), two groups of solenoid valves are installed at the bottom of the Y-shaped tube (304), and an auxiliary delivery tube (305) is installed on the inner wall of the Y-shaped tube (304) at a position close to one group of solenoid valves.

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