A construction method for dewatering in deep foundation pits

Abstract

The present invention discloses a construction method for dewatering in deep foundation pits, which includes the following steps: First, build the construction equipment for dewatering in deep foundation pits; Second, move the construction equipment for dewatering in deep foundation pits to a relatively flat position above the foundation pit; Third, fix the construction equipment for dewatering in deep foundation pits; Fourth, lower the pump head; Fifth, start the water pump; Sixth, identify in real time whether the filter box is blocked; Seventh, clean the filter box. By inserting the fixing nails into the soil, the present invention facilitates the stable placement of the equipment body during operation, preventing the equipment body from slipping into the foundation pit where dewatering is being carried out due to the vibration during the operation of the equipment body. The filter box is convenient to disassemble from the surface of the pump head and easy to clean, preventing the pores and grooves on the surface of the filter box from being blocked due to long-term lack of cleaning, thereby preventing the dewatering work of the equipment body from being affected. The liquid level sensor is used to detect the water level in the foundation pit in real time, and the flow transmitter is used to detect the drainage volume of the drain pipe in real time, identifying the situation where the dewatering effect deteriorates in the first time and reducing the occurrence of potential safety hazards.

Description

Technical Field

[0001] The invention belongs to the technical field of foundation pit dewatering, and particularly relates to a construction method for deep foundation pit dewatering. Background Art

[0002] The construction site area of a building is large, and the number of foundation pits is numerous and generally scattered at various positions. The dewatering equipment needs to constantly transfer the construction site. In order to facilitate movement, most of the existing dewatering equipment is equipped with pulleys for movement at the bottom. However, due to the rain erosion of the mud surface on the foundation pit, the mud surface will be relatively slippery. When the dewatering equipment is operating, it will generate vibrations. When the equipment is placed on the relatively slippery mud surface for use, the equipment will be unstable due to the vibrations of the equipment. Even with counterweights added, the effect is still not good. In addition, most of the water-containing foundation pits contain a large amount of crushed stones and slag, causing ordinary water pumps to be easily damaged. It is necessary to filter the crushed stones through a filter screen to prevent the crushed stones from entering the water pump and causing internal damage to the water pump. However, the filter screen usually cannot be disassembled from the pump head for cleaning. After long-term use, the dewatering effect will become poor due to the blockage of the filter screen. Moreover, in the case of a poor dewatering effect, it is difficult for construction workers to detect it in a timely manner, increasing the potential safety hazards during construction. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a construction method for deep foundation pit dewatering aiming at the above-mentioned deficiencies in the prior art. By inserting the fixing nails into the soil, it is convenient to stably place the equipment body during operation, which can play a role in reinforcement and prevent the equipment from sliding into the foundation pit being dewatered due to the vibration of the equipment body during operation. In addition, the filter frame is convenient to disassemble from the surface of the pump head and simple to clean, preventing the pores on the surface of the filter frame from being blocked due to lack of cleaning for a long time, thereby preventing the dewatering work of the equipment body from being affected. The liquid level sensor is used to detect the water level in the foundation pit in real time, and the flow transmitter is used to detect the drainage volume of the drain pipe in real time, identifying the situation of poor dewatering effect in the first time, reducing the occurrence of potential safety hazards, and being convenient for popularization and use.

[0004] To solve the above technical problems, the technical solution adopted by the present invention is: a construction method for deep foundation pit dewatering, characterized in that the method includes the following steps:

[0005] Step 1: Build the deep foundation pit dewatering construction equipment, and the process is as follows:

[0006] Step 101: Fix and install support columns at the bottom end of the equipment body. Moving pulleys are installed at the bottom ends of the support columns. A limit frame is installed at the top end of the equipment body. A lifting plate is installed inside the limit frame. Fixing nails are fixedly installed at the bottom end of the lifting plate. An internally threaded sleeve is inserted inside the limit frame. A threaded rod is inserted inside the internally threaded sleeve. A transmission gear is fixedly installed on the surface of the internally threaded sleeve. A motor box is fixedly installed at the top end of the limit frame. A servo motor is installed inside the motor box. An output gear is fixedly installed on the output shaft of the servo motor.

[0007] Step 102: Fix and install a push frame and a water pump at the top end of the equipment body. An installation seat is installed on the side of the equipment body, and a filter frame is installed at the bottom end of the installation seat.

[0008] Step 103: Install a water absorption sleeve on the side of the water pump. An installation part is installed at the bottom end of the water absorption sleeve. A pump head is installed at the bottom end of the installation seat. A connecting sleeve and a liquid level sensor are installed at the top end of the installation seat. A connecting part is installed at the top end of the connecting sleeve. A fixed clamping block is installed on the side of the installation seat, and a second spring is installed on the side of the fixed clamping block. A disassembly button is inserted into the side of the filter frame, and a third spring is installed on the surface of the disassembly button.

[0009] Step 104: A group of circular holes are opened at the top end of the water pump, and a drain pipe is inserted into the holes. A flow transmitter is arranged on the drain pipe. Internal threads are provided on the inner wall of the installation part. The inner wall of the installation part and the surface of the connecting part are meshed with each other to form a rotating structure. A group of telescopic water pipes are installed inside the water absorption sleeve. A group of circular holes are opened on the side of the bottom end of the installation seat. The fixed clamping block is adapted to the circular holes opened at the bottom end of the installation seat in terms of size.

[0010] Step 105: A controller is installed on the water pump. The signal output ends of the liquid level sensor and the flow transmitter are connected to the input end of the controller. The water pump is controlled by the controller.

[0011] Step Two: Move the deep foundation pit dewatering construction equipment to a relatively flat position above the foundation pit.

[0012] Step Three: Fix the deep foundation pit dewatering construction equipment: The rotation of the servo motor can make the output gear rotate. The rotation of the output gear can make the transmission gear rotate. The rotation of the transmission gear can make the internally threaded sleeve rotate. The rotation of the internally threaded sleeve can make the threaded rod expand and contract. The expansion and contraction of the threaded rod can make the lifting plate rise and fall. Lowering the lifting plate can make the fixing nails move downward. Inserting the fixing nails into the soil can play a fixing role.

[0013] Step 4. Lower the pump head: By rotating the mounting part and the connecting part, the mounting part and the connecting part can be separated, so that the telescopic water pipe installed in the water suction sleeve can be extended, and the pump head equipped with the filter frame can be placed at the bottom of the building sump that needs drainage. At this time, the water level submerges the liquid level sensor.

[0014] Step 5. Start the water pump: Turn on the water pump, and the pump head can pump out the water at the bottom of the sump, thereby performing foundation pit dewatering and drainage.

[0015] Step 6. Real-time identify whether the filter frame is blocked: Use the liquid level sensor to detect the water level in the foundation pit, and use the flow transmitter to detect the drainage volume of the drainage pipe.

[0016] When the liquid level sensor is submerged underwater and the drainage volume of the drainage pipe is within the normal threshold range, the water pump continues to work.

[0017] When the liquid level sensor is submerged underwater while the drainage volume of the drainage pipe decreases, the filter frame is blocked, and step 7 is executed.

[0018] When the liquid level sensor leaks out of the water surface, the controller controls the water pump to stop working.

[0019] Step 7. Clean the filter frame: Lift the filter frame above the foundation pit, clean the filter frame, and then put it back into the sump in the foundation pit, and execute step 5.

[0020] In the above-mentioned construction method for dewatering and drainage of deep foundation pits, it is characterized in that: a lifting rod is inserted inside the push frame, an adjusting knob is installed inside the lifting rod, a first spring is installed on the side of the adjusting knob, a push rod is installed on the surface of the lifting rod, four groups of circular holes are provided on the side of the push frame, and the size of the adjusting knob is adapted to the circular holes provided on the side of the push frame.

[0021] In the above-mentioned construction method for dewatering and drainage of deep foundation pits, it is characterized in that: the inside of the filter frame is a hollow structure, small circular holes are evenly provided on the surface of the filter frame, the pump head can be inserted into the filter frame, a circular groove is provided on the inner wall of the filter frame, the fixed block and the circular groove are mating components, and circular holes are provided on both sides of the filter frame, and the disassembly button can be inserted into the circular holes provided on the side of the filter frame.

[0022] When using step seven, press the disassembly buttons at both ends of the filter frame at the same time so that the disassembly buttons can slide into the inside of the filter frame, and the fixed block can be pressed by the disassembly button. The fixed block can be retracted into the inside of the mounting seat by pressing the fixed block. In this way, the fixed block is no longer engaged in the circular groove opened on the inner wall of the filter frame, so that the filter frame can be removed from the bottom end of the mounting seat. When the filter frame is disassembled and cleaned, the pump head is inserted into the interior of the filter frame, and the fixed block is engaged in the circular groove opened on the inner wall of the filter frame to complete the fixed installation of the filter frame. In this way, the filter frame can be disassembled and cleaned at any time after use for a period of time to prevent the holes and grooves on the surface of the filter frame from being blocked by gravel.

[0023] The above-mentioned deep foundation pit drainage construction method is characterized in that: a group of rectangular holes are opened at the bottom end of the equipment body, the lifting plate is adapted to the size of the rectangular holes opened at the bottom end of the equipment body, a group of rectangular grooves are opened at the top end of the lifting plate, the top end of the lifting plate is connected to the bottom end of the threaded rod, and the surface of the transmission gear and the surface of the output gear form a rotating structure.

[0024] The above-mentioned deep foundation pit drainage construction method is characterized in that: the controller includes a shell and an electronic circuit board arranged in the shell, a microcontroller is integrated on the electronic circuit board, the signal output ends of the liquid level sensor and flow transmitter are connected to the input ends of the microcontroller, and the water pump is controlled by the microcontroller.

[0025] Compared with the prior art, the present invention has the following advantages:

[0026] 1. The present invention facilitates the stable placement of the equipment body during operation by inserting the frame nails into the soil, which can play a reinforcing role and prevent the equipment body from sliding into the foundation pit that is being drained due to vibration during operation, and is easy to promote and use.

[0027] 2. The filter frame of the present invention is easy to disassemble from the surface of the pump head and is simple to clean, which prevents the holes and grooves on the surface of the filter frame from being blocked due to long-term cleaning, thereby preventing the drainage work of the equipment body from being affected. It is reliable, stable and has good use effect.

[0028] 3. The method of the present invention has simple steps. It uses a liquid level sensor to detect the water level in the foundation pit in real time, and uses a flow transmitter to detect the drainage volume of the drainage pipe in real time. It can identify the deterioration of drainage effect in the first time, reduce the occurrence of safety hazards, and facilitate promotion and use.

[0029] The technical solution of the present invention is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1Schematic diagram of the overall structure of the device of the present invention;

[0031] Figure 2 Schematic diagram of the front cross-section of the overall structure of the device of the present invention;

[0032] Figure 3 Schematic diagram of the lifting plate, fixing nails and servo motor of the present invention;

[0033] Figure 4 Schematic diagram of the front cross-section of the pushing frame of the present invention;

[0034] Figure 5 Schematic diagram of the mounting parts, connecting parts and filter box of the present invention;

[0035] Figure 6 For the present invention Figure 5 Schematic diagram of the enlarged structure at position A in;

[0036] Figure 7 Flow chart of the method of the present invention.

[0037] Explanation of reference numerals:

[0038] 1 - Equipment body; 101 - Support column; 102 - Moving pulley;

[0039] 2 - Limit frame; 201 - Lifting plate; 202 - Fixing nail;

[0040] 203 - Internal thread sleeve; 204 - Threaded rod; 205 - Transmission gear;

[0041] 3 - Motor box; 301 - Servo motor; 302 - Output gear;

[0042] 4 - Pushing frame; 401 - Lifting rod; 402 - Adjusting knob;

[0043] 403 - First spring; 404 - Pushing rod; 5 - Water pump;

[0044] 501 - Absorbing sleeve; 502 - Mounting part; 6 - Mounting base;

[0045] 601 - Pump head; 602 - Connecting sleeve; 603 - Connecting part;

[0046] 604 - Fixed clamping block; 605 - Second spring; 7 - Filter box;

[0047] 701 - Dismantling button; 702 - Third spring; 8 - Liquid level sensor. Detailed implementation manners

[0048] As Figures 1 to 7 shown, a deep foundation pit dewatering construction method of the present invention includes the following steps:

[0049] Step 1. Set up the deep foundation pit dewatering construction equipment, and the process is as follows:

[0050] Step 101. Fix and install the support column 101 at the bottom end of the equipment body 1. A moving pulley 102 is installed at the bottom end of the support column 101. A limit frame 2 is installed at the top end of the equipment body 1. A lifting plate 201 is installed inside the limit frame 2. A fixing nail 202 is fixedly installed at the bottom end of the lifting plate 201. An internal thread sleeve 203 is inserted into the limit frame 2. A threaded rod 204 is inserted into the internal thread sleeve 203. A transmission gear 205 is fixedly installed on the surface of the internal thread sleeve 203. A motor box 3 is fixedly installed at the top end of the limit frame 2. A servo motor 301 is installed inside the motor box 3. An output gear 302 is fixedly installed on the output shaft of the servo motor 301;

[0051] Step 102. Fix and install a push frame 4 and a water pump 5 at the top end of the equipment body 1. An installation seat 6 is installed on the side of the equipment body 1, and a filter frame 7 is installed at the bottom end of the installation seat 6;

[0052] Step 103. Install a water absorption sleeve 501 on the side of the water pump 5. An installation part 502 is installed at the bottom end of the water absorption sleeve 501. A pump head 601 is installed at the bottom end of the installation seat 6. A connecting sleeve 602 and a liquid level sensor 8 are installed at the top end of the installation seat 6. A connecting part 603 is installed at the top end of the connecting sleeve 602. A fixed block 604 is installed on the side of the installation seat 6, and a second spring 605 is installed on the side of the fixed block 604. A disassembly button 701 is inserted into the side of the filter frame 7, and a third spring 702 is installed on the surface of the disassembly button 701;

[0053] Step 104. A group of circular holes are opened at the top end of the water pump 5, and a drain pipe is inserted into the holes. A flow transmitter is arranged on the drain pipe. Internal threads are opened on the inner wall of the installation part 502. The inner wall of the installation part 502 is engaged with the surface of the connecting part 603 to form a rotating structure. A group of telescopic water pipes are installed inside the water absorption sleeve 501. A group of circular holes are opened on the bottom side of the installation seat 6. The fixed block 604 is adapted to the size of the circular holes opened at the bottom end of the installation seat 6;

[0054] Step 105. A controller is installed on the water pump 5. The signal output ends of the liquid level sensor 8 and the flow transmitter are connected to the input end of the controller. The water pump 5 is controlled by the controller;

[0055] Step 2. Move the deep foundation pit dewatering construction equipment to a relatively flat position above the foundation pit;

[0056] Step 3. Fix the dewatering construction equipment for the deep foundation pit: The rotation of the servo motor 301 can drive the output gear 302 to rotate. The rotation of the output gear 302 can drive the transmission gear 205 to rotate. The rotation of the transmission gear 205 can drive the internal thread sleeve 203 to rotate. The rotation of the internal thread sleeve 203 can cause the threaded rod 204 to extend and retract. The extension and retraction of the threaded rod 204 can cause the lifting plate 201 to move up and down. Lowering the lifting plate 201 can cause the fixing nail 202 to move downward. Inserting the fixing nail 202 into the soil can play a fixing role;

[0057] Step 4. Lower the pump head: By rotating the mounting part 502 and the connecting part 603, the mounting part 502 and the connecting part 603 can be separated, so that the telescopic water pipe installed in the water absorption sleeve 501 can be extended, and the pump head equipped with the filter frame 7 can be placed at the bottom of the building water pit that needs to be drained. At this time, the water level submerges the liquid level sensor 8;

[0058] Step 5. Start the water pump: Turn on the water pump 5, and the pump head 601 can pump out the water at the bottom of the water pit, so as to carry out dewatering of the foundation pit;

[0059] Step 6. Real-time identify whether the filter frame is blocked: Use the liquid level sensor 8 to detect the water level in the foundation pit, and use the flow transmitter to detect the drainage volume of the drainage pipe;

[0060] When the liquid level sensor 8 is submerged underwater and the drainage volume of the drainage pipe is within the normal threshold range, the water pump 5 continues to work;

[0061] When the liquid level sensor 8 is submerged underwater while the drainage volume of the drainage pipe decreases, the filter frame 7 is blocked, and Step 7 is executed;

[0062] When the liquid level sensor 8 emerges from the water surface, the controller controls the water pump 5 to stop working;

[0063] Step 7. Clean the filter frame: Lift the filter frame 7 above the foundation pit, clean the filter frame 7, and then put it back into the water pit in the foundation pit, and execute Step 5.

[0064] In this embodiment, a lifting rod 401 is inserted into the inside of the pushing frame 4. An adjusting knob 402 is installed inside the lifting rod 401. A first spring 403 is installed on the side of the adjusting knob 402. A pushing rod 404 is installed on the surface of the lifting rod 401. Four groups of circular holes are opened on the side of the pushing frame 4. The size of the adjusting knob 402 is adapted to the circular holes opened on the side of the pushing frame 4.

[0065] In this embodiment, the interior of the filter box 7 is a hollow structure. Fine circular holes are evenly formed on the surface of the filter box 7. The pump head 601 can be inserted into the filter box 7. A circular groove is formed on the inner wall of the filter box 7. The fixed clamping block 604 and the circular groove are mating components. Circular holes are formed on both sides of the filter box 7. The disassembly button 701 can be inserted into the circular holes formed on the side of the filter box 7.

[0066] During use in Step Seven, by simultaneously pressing the disassembly buttons 701 at both ends of the filter box 7, the disassembly buttons 701 can slide into the interior of the filter box 7. The fixed clamping block 604 can be pressed by the disassembly buttons 701. By pressing against the fixed clamping block 604, the fixed clamping block 604 can be contracted into the interior of the mounting seat 6. In this way, the fixed clamping block 604 is no longer engaged with the circular groove formed on the inner wall of the filter box 7, so that the filter box 7 can be detached from the bottom end of the mounting seat 6. After the filter box 7 is detached and cleaned, the pump head 601 is inserted into the interior of the filter box 7, and the fixed clamping block 604 is engaged with the circular groove formed on the inner wall of the filter box 7, thus completing the fixed installation of the filter box 7. In this way, the filter box 7 can be detached and cleaned at any time after being used for a period of time, preventing the holes on the surface of the filter box 7 from being blocked by gravel.

[0067] In this embodiment, a group of rectangular holes are formed at the bottom end of the equipment body 1. The lifting plate 201 is adapted to the size of the rectangular holes formed at the bottom end of the equipment body 1. A group of rectangular grooves are formed at the top end of the lifting plate 201. The top end of the lifting plate 201 is connected to the bottom end of the threaded rod 204. The surface of the transmission gear 205 and the surface of the output gear 302 form a rotating structure.

[0068] In this embodiment, the controller includes a housing and an electronic circuit board disposed in the housing. A microcontroller is integrated on the electronic circuit board. The signal output ends of the liquid level sensor 8 and the flow transmitter are connected to the input end of the microcontroller. The water pump 5 is controlled by the microcontroller.

[0069] During actual use, the microcontroller is an ARM microcontroller or a DSP microcontroller.

[0070] The above are only the preferred embodiments of the present invention and do not impose any limitations on the present invention. Any simple modifications, changes, and equivalent structural changes made to the above embodiments according to the technical essence of the present invention still fall within the protection scope of the technical solution of the present invention.

Claims

1. A construction method for dewatering in deep foundation pits, characterized in that, The method includes the following steps: Step 1: Set up the deep foundation pit dewatering construction equipment, and the process is as follows: Step 101: Fix and install the support column (101) at the bottom end of the equipment body (1). A moving pulley (102) is installed at the bottom end of the support column (101). A limit frame (2) is installed at the top end of the equipment body (1). A lifting plate (201) is installed inside the limit frame (2). A fixing nail (202) is fixedly installed at the bottom end of the lifting plate (201). An internal thread sleeve (203) is inserted into the limit frame (2). A threaded rod (204) is inserted into the internal thread sleeve (203). A transmission gear (205) is fixedly installed on the surface of the internal thread sleeve (203). A motor box (3) is fixedly installed at the top end of the limit frame (2). A servo motor (301) is installed inside the motor box (3). An output gear (302) is fixedly installed on the output shaft of the servo motor (301). Step 102: Fix and install a push frame (4) and a water pump (5) at the top end of the equipment body (1). An installation seat (6) is installed on the side of the equipment body (1), and a filter frame (7) is installed at the bottom end of the installation seat (6). Step 103: Install a water suction sleeve (501) on the side of the water pump (5). An installation part (502) is installed at the bottom end of the water suction sleeve (501). A pump head (601) is installed at the bottom end of the installation seat (6). A connecting sleeve (602) and a liquid level sensor (8) are installed at the top end of the installation seat (6). A connecting part (603) is installed at the top end of the connecting sleeve (602). A fixed clamping block (604) is installed on the side of the installation seat (6), and a second spring (605) is installed on the side of the fixed clamping block (604). A disassembly button (701) is inserted into the side of the filter frame (7), and a third spring (702) is installed on the surface of the disassembly button (701). Step 104: A group of circular holes are opened at the top end of the water pump (5), and a drain pipe is inserted into the holes. A flow transmitter is arranged on the drain pipe. Internal threads are provided on the inner wall of the installation part (502). The inner wall of the installation part (502) meshes with the surface of the connecting part (603) to form a rotating structure. A group of telescopic water pipes are installed inside the water suction sleeve (501). A group of circular holes are opened on the bottom side of the installation seat (6). The fixed clamping block (604) is adapted to the circular holes opened at the bottom end of the installation seat (6) in terms of size. Step 105: A controller is installed on the water pump (5). The signal output ends of the liquid level sensor (8) and the flow transmitter are connected to the input end of the controller. The water pump (5) is controlled by the controller. Step 2: Move the deep foundation pit dewatering construction equipment to a relatively flat position above the foundation pit; Step 3. Fix the deep foundation pit dewatering construction equipment: The rotation of the servo motor (301) can drive the output gear (302) to rotate. The rotation of the output gear (302) can drive the transmission gear (205) to rotate. The rotation of the transmission gear (205) can drive the internal thread sleeve (203) to rotate. The rotation of the internal thread sleeve (203) can cause the threaded rod (204) to extend and retract. The extension and retraction of the threaded rod (204) can cause the lifting plate (201) to move up and down. Lowering the lifting plate (201) can cause the fixing nail (202) to move downward. Inserting the fixing nail (202) into the soil can play a fixing role. Step 4. Lower the pump head: By rotating the mounting part (502) and the connecting part (603), the mounting part (502) and the connecting part (603) can be separated, so that the telescopic water pipe installed in the water suction sleeve (501) can be extended, and the pump head equipped with the filter frame (7) can be placed at the bottom of the building water pit that needs to be drained. At this time, the water level submerges the liquid level sensor (8). Step 5. Start the water pump: Turn on the water pump (5), and the pump head (601) can pump out the water at the bottom of the water pit, so as to carry out foundation pit dewatering. Step 6. Real-time identification of whether the filter frame is blocked: Use the liquid level sensor (8) to detect the water level in the foundation pit, and use the flow transmitter to detect the drainage volume of the drainage pipe. When the liquid level sensor (8) is submerged underwater and the drainage volume of the drainage pipe is within the normal threshold range, the water pump (5) continues to work. When the liquid level sensor (8) is submerged underwater and the drainage volume of the drainage pipe decreases, the filter frame (7) is blocked, and step 7 is executed. When the liquid level sensor (8) leaks out of the water surface, the controller controls the water pump (5) to stop working. Step 7. Clean the filter frame: Lift the filter frame (7) above the foundation pit, clean the filter frame (7), and then put it back into the water pit in the foundation pit, and execute step 5.

2. The dewatering construction method for deep foundation pits according to claim 1, characterized in that: The lifting rod (401) is inserted into the inside of the pushing frame (4). The adjusting knob (402) is installed inside the lifting rod (401). The first spring (403) is installed on the side of the adjusting knob (402). The pushing rod (404) is installed on the surface of the lifting rod (401). Four groups of circular holes are opened on the side of the pushing frame (4). The size of the adjusting knob (402) is adapted to the circular holes opened on the side of the pushing frame (4).

3. A deep foundation pit dewatering construction method according to claim 1, characterized in that: The inside of the filter frame (7) is a hollow structure. Small circular holes are evenly opened on the surface of the filter frame (7). The pump head (601) can be inserted into the filter frame (7). A circular groove is opened on the inner wall of the filter frame (7). The fixed block (604) and the circular groove are mating components. Circular holes are opened on both sides of the filter frame (7). The disassembly button (701) can be inserted into the circular holes opened on the side of the filter frame (7). During use, the disassembly buttons (701) at both ends of the filter frame (7) are pressed simultaneously, so that the disassembly buttons (701) can slide into the interior of the filter frame (7). The disassembly buttons (701) can press the fixed card block (604) against the fixed card block (604). The pressing of the fixed card block (604) against the fixed card block (604) can cause the fixed card block (604) to retract into the interior of the mounting seat (6). In this way, the fixed card block (604) is no longer engaged with the opening on the inner wall of the filter frame (7). The filter frame (7) is fitted into the circular groove of the filter frame (7), thereby enabling the filter frame (7) to be disassembled from the bottom end of the mounting seat (6). After the filter frame (7) is disassembled and cleaned, the pump head (601) is inserted into the interior of the filter frame (7), and the fixing block (604) is engaged with the circular groove provided on the inner wall of the filter frame (7), thereby completing the fixed installation of the filter frame (7). In this way, the filter frame (7) can be disassembled and cleaned at any time after being used for a period of time, thereby preventing the holes and grooves on the surface of the filter frame (7) from being blocked by gravel.

4. A deep foundation pit dewatering construction method according to claim 1, characterized in that: A group of rectangular holes are formed at the bottom of the device body (1); the lifting plate (201) is adapted to the size of the rectangular holes formed at the bottom of the device body (1); a group of rectangular grooves are formed at the top of the lifting plate (201); the top of the lifting plate (201) is connected to the bottom of the threaded rod (204); and the surface of the transmission gear (205) and the surface of the output gear (302) form a rotating structure.

5. A deep foundation pit dewatering construction method according to claim 1, characterized in that: The controller comprises a housing and an electronic circuit board arranged in the housing, wherein a microcontroller is integrated on the electronic circuit board, the signal output ends of the liquid level sensor (8) and the flow transmitter are connected to the input end of the microcontroller, and the water pump (5) is controlled by the microcontroller.

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