Foundation pit dewatering device with filtering function

Abstract

The application discloses a foundation pit dewatering device with a filtering function and relates to the technical field of foundation pit dewatering, which comprises a surrounding steel cylinder, a compaction mechanism, a drainage mechanism, a positioning foot rod and a stirring mechanism, the surrounding steel cylinder is connected with the inner wall of a foundation pit, the bottom of the surrounding steel cylinder is provided with the positioning foot rod, the bottom end of the positioning foot rod is inserted into the foundation pit, the top of the surrounding steel cylinder is provided with the compaction mechanism, the top of the compaction mechanism is provided with the drainage mechanism, and the inside of the compaction mechanism is provided with the stirring mechanism. Through the setting of the surrounding steel cylinder, the positioning foot rod and the compaction mechanism, the hydraulic cylinder is elongated, the lower pressing plate at the bottom end of the hydraulic cylinder is driven to move, the bottom layer of the foundation pit at the bottom of the surrounding steel cylinder is compacted, the influence of underground seepage water on the loose soil layer is reduced, the amount of silt carried in the underground seepage water is reduced, the space at the bottom of the surrounding steel cylinder is pressurized by the movable baffle, and the compaction effect of the device on the bottom of the foundation pit is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of foundation pit dewatering, in particular to a foundation pit dewatering device with filtering function. BACKGROUND

[0002] Foundation pit engineering refers to ground excavation and earthwork treatment for the construction of underground buildings or other engineering needs during the construction process. Foundation pit engineering plays an important role in construction and provides necessary conditions and support for the construction of underground buildings. However, complex groundwater geological conditions pose certain risks to foundation pit engineering, including excavation and support of soft soil foundation construction, especially plastic silt foundation construction. The soil has high water content and is soft, and construction equipment often gets stuck in the soil after entering the site, affecting construction progress. Slow soil consolidation, high water content and high fluidity pose certain safety hazards to the project.

[0003] After the excavation of the foundation pit, water in the soil layer infiltrates, causing water accumulation in the foundation pit, affecting the strength of the foundation pit, and direct water pumping by the water pump is easily affected by sand and gravel in the foundation pit, causing water pump pipeline blockage and other problems. At the same time, the water body carries silt and is discharged integrally, increasing the labor consumption of foundation pit backfilling, so it is necessary to use a dewatering device to remove water from the foundation pit. SUMMARY

[0004] The purpose of the present application is to provide a foundation pit dewatering device with filtering function to solve the problems raised in the background art.

[0005] To solve the above technical problems, the present application provides the following technical solutions:

[0006] A foundation pit dewatering device with filtering function, comprising a surrounding steel cylinder, a compaction mechanism, a drainage mechanism, a positioning foot rod and a stirring mechanism.

[0007] The surrounding steel cylinder is connected to the inner wall of the foundation pit, the bottom of the surrounding steel cylinder is provided with a positioning foot rod, the bottom end of the positioning foot rod is inserted into the foundation pit, the top of the surrounding steel cylinder is provided with a compaction mechanism, the top of the compaction mechanism is provided with a drainage mechanism, and the inside of the compaction mechanism is provided with a stirring mechanism.

[0008] The compaction mechanism comprises a support clasp connected with the top of the enclosure steel cylinder, the bottom of the support clasp is provided with a hydraulic cylinder, one end of the hydraulic cylinder is provided with a positioning spring, the bottom end of the positioning spring is provided with a movable baffle, the bottom end of the hydraulic cylinder is provided with a connecting ring plate, the center of the connecting ring plate is provided with a conical filter screen, the bottom of the connecting ring plate is provided with a connecting sleeve rod, and the bottom end of the connecting sleeve rod is provided with a pressing bottom plate. The hydraulic cylinder is elongated, the pressing bottom plate at the bottom end of the hydraulic cylinder is moved, the bottom layer of the foundation pit at the bottom of the enclosure steel cylinder is compacted, the influence of underground seepage water on the loose soil layer is reduced, the amount of silt carried in the underground seepage water is reduced, the strength of the foundation pit is improved, and the movable baffle is synchronously pressed down by the hydraulic cylinder while the pressing bottom plate moves downward, the space at the bottom of the enclosure steel cylinder is pressurized by the movable baffle, the pressure balance of the bottom of the foundation pit is achieved, the continuous seepage of the bottom of the foundation pit is reduced, and the compaction effect of the pressing bottom plate on the bottom layer of the foundation pit is improved.

[0009] The drainage mechanism comprises a water tank connected with the upper surface of the support clasp, the top of the water tank is provided with a curved pipe, the curved pipe is provided as a U-shaped pipe, one end of the curved pipe away from the water tank is provided with a conduit, the bottom end of the conduit is provided with a water inlet, and the water inlet is connected with the conical filter screen. When the hydraulic cylinder is elongated, the pressure at the bottom of the movable baffle in the enclosure steel cylinder is increased, so that the water in the bottom of the foundation pit enters the water inlet through the filtration of the conical filter screen, the filtered water flows into the water tank through the conduit and the curved pipe, the U-shaped arrangement of the curved pipe accelerates the drainage of the water in the conical filter screen by using the siphon effect, the water is stored in the water tank, the utilization rate of natural resources of the device is improved, and the environmental friendliness of the device is improved.

[0010] The stirring mechanism comprises a gear set connected with the bottom of the connecting ring plate, the bottom of the gear set is provided with a fan blade, the fan blade is connected with the outer wall of the conical filter screen, the bottom of the connecting ring plate is provided with a mesh plate, the mesh plate is provided with a plurality of mesh plates, the mesh plates are annularly distributed about the center point of the connecting ring plate, and one side of the mesh plate is attached to the inner wall of the enclosure steel cylinder. The fan blade is driven to rotate by the gear set, the fan blade stirs the water between the pressing bottom plate and the connecting ring plate, the water is moved outward by the centrifugal force generated by rotation, the large-diameter sand and stones with large mass in the water are moved outward, the sand and stones are filtered through the annularly distributed mesh plates outside the fan blade, the blockage of the sand and stones to the water filtration of the conical filter screen is reduced, the outer wall of the conical filter screen is scraped and washed while the fan blade rotates, and the water filtration efficiency of the conical filter screen is improved.

[0011] The gear set comprises a power gear connected with a connecting ring plate, one side of the power gear is provided with a driving motor, the driving motor on one side of the power gear is connected with the upper surface of the connecting ring plate, the power gear on one side is engaged with a gear ring, the gear ring is connected with the bottom of the connecting ring plate, the bottom of the gear ring is connected with a fan blade, one side of the gear ring is engaged with a transmission gear, the transmission gear is provided with a plurality of transmission gears, and the transmission gears are annularly distributed about the center point of the gear ring. Start the driving motor on one side of the power gear to rotate, the power gear drives the gear ring on one side to rotate, the gear ring drives the fan blade to rotate, the water body is filtered through the conical filter screen by the rotation of the fan blade, the separation of the water body and the silt is accelerated, and the working efficiency of the device is improved.

[0012] The lower pressing bottom plate comprises a hole plate and a fan-shaped baffle, the upper surface of the hole plate is connected with the bottom of the connecting sleeve rod, a plurality of through holes are annularly and equidistantly formed in the upper surface of the hole plate, the fan-shaped baffle is connected with the bottom of the hole plate through a bearing, the center point of the fan-shaped baffle coincides with that of the hole plate, and a fixed motor is arranged on one side of the fan-shaped baffle through a center rotating shaft. The fan-shaped baffle is driven to rotate by the fixed motor on one side of the fan-shaped baffle, the size of the through hole on one side of the hole plate is adjusted, the particle size capable of passing through the lower pressing bottom plate is controlled, when the foundation pit bottom is pressed down by the hydraulic cylinder, the cement mixture at the bottom of the foundation pit is first filtered preliminarily by the lower pressing bottom plate, the working pressure of the conical filter screen is reduced, the size of the through hole at the bottom of the hole plate is adjusted according to the different soil qualities, and the applicability of the device is improved.

[0013] The connecting sleeve rod comprises a positioning clamping rod and a movable sleeve, the bottom end of the movable sleeve is connected with the upper surface of the hole plate, one end of the positioning clamping rod is connected with the inner wall of the movable sleeve, the inner wall of the movable sleeve is provided with a clamping block, one end of the positioning clamping rod is provided with a buffer spring, one end of the buffer spring is connected with the inner wall of the movable sleeve, one end of the positioning clamping rod is provided with a fixed clamping ring, the upper surface of the fixed clamping ring is connected with the buffer spring, the top end of the buffer spring is connected with the inner wall of the movable sleeve, and a threaded groove is formed in the end of the positioning clamping rod close to the movable sleeve. While the lower pressing bottom plate is compacted downward by the hydraulic cylinder, the hole plate in the lower pressing bottom plate pushes the movable sleeve upward, so that the positioning clamping rod slides along the inner wall of the movable sleeve, the positioning clamping rod drives the fixed clamping ring to move, the buffer spring is stretched in cooperation with the movable sleeve, and the clamping block arranged on the inner wall of the movable sleeve slides along the vertical sliding groove in the threaded groove. Buffering the compaction of the foundation pit by the lower pressing bottom plate reduces the loss of the durability of the device.

[0014] The top end of the positioning clamping rod is connected with the transmission gear, the positioning clamping rod is provided with a plurality of positioning clamping rods, and the thread grooves opened at the bottom ends of the positioning clamping rods are in the same direction. The driving motor drives the power gear to rotate, so that the power gear drives the meshing gear ring to rotate, the gear ring drives the transmission gear to rotate, the transmission gear drives the positioning clamping rod to rotate along the inner wall of the movable sleeve, then the clamping block slides along the thread groove, and the clamping block falls along the vertical sliding groove after moving to the top of the thread groove, is buffered through the extrusion buffer spring, drives the movable sleeve to move up and down at the same time, drives the bottom pressing plate at the bottom to vibrate up and down through the movable sleeve, adjusts the size of the through hole through the rotation of the fan-shaped baffle on one side of the hole plate, screens the sand on the upper surface of the pressing plate, fills the sand with a smaller particle size in the pit bottom, and then lays the sand with a larger particle size on the upper layer to form a natural filter layer, compacts the lower pressing plate, reduces the amount of small particle size silt carried by the secondary seepage of the pit, and reduces the workload of the pit maintenance.

[0015] Compared with the prior art, the beneficial effects achieved by the present application are:

[0016] 1. By arranging the enclosing steel cylinder, the positioning foot rod and the compaction mechanism, the hydraulic cylinder is elongated, the pressing plate at the bottom end of the hydraulic cylinder is moved, the bottom layer of the foundation pit at the bottom of the enclosing steel cylinder is compacted, the influence of underground seepage on the loose soil layer is reduced, the amount of silt carried in the underground seepage is reduced, the strength of the foundation pit is improved, the hydraulic cylinder drives the movable baffle to move downward at the same time, the movable baffle pressurizes the space at the bottom of the enclosing steel cylinder, balances the pressure at the bottom of the foundation pit, reduces the continuous seepage at the bottom of the foundation pit, and improves the compaction effect of the device on the bottom of the foundation pit.

[0017] 2. By arranging the enclosing steel cylinder, the positioning foot rod, the compaction mechanism and the drainage mechanism, the pressure at the bottom of the movable baffle in the enclosing steel cylinder is increased when the hydraulic cylinder is elongated, so that the water in the bottom of the foundation pit is filtered by the conical filter screen and enters the water inlet, the filtered water flows into the water tank through the conduit and the curved pipe, the U-shaped arrangement of the curved pipe utilizes the siphon effect to accelerate the discharge of water in the conical filter screen, and the water is stored in the water tank, thereby improving the utilization rate of natural resources of the device, improving the environmental protection of the device, and reducing the influence of water on the strength of the foundation pit.

[0018] 3、Through the setting of the enclosing steel cylinder, the positioning foot rod, the compaction mechanism, the drainage mechanism and the stirring mechanism, the positioning clamping rod is driven to rotate along the inner wall of the movable sleeve through the transmission gear, the clamping block slides along the threaded groove, the clamping block moves to the top of the threaded groove and then falls along the vertical sliding groove, is buffered through the extrusion buffer spring, the lower pressing plate is lifted and vibrated, the size of the through hole is adjusted by rotating the fan-shaped baffle on one side of the hole plate, the sand and stone on the upper surface of the lower pressing plate is screened, the smaller particle size of the sand and stone is backfilled to the bottom of the foundation pit, and then the sand and stone with larger particle size is laid to the upper layer to form a natural filter layer, the amount of silt carried out by the secondary water seepage of the foundation pit is reduced, the workload of the maintenance of the foundation pit is reduced, and the strength of the foundation pit is further improved. BRIEF DESCRIPTION OF DRAWINGS

[0019] The accompanying drawings are included to provide a further understanding of the application, and are incorporated in and constitute a part of the specification, illustrate embodiments of the application, and together with the description serve to explain the application, and do not limit the application. In the drawings:

[0020] Figure 1 is a structural schematic diagram of the application;

[0021] Figure 2 is a front cross-sectional structural schematic diagram of the application;

[0022] Figure 3 is a compaction mechanism and drainage mechanism connection structure schematic diagram of the application;

[0023] Figure 4 is a drainage mechanism cross-sectional structure schematic diagram of the application;

[0024] Figure 5 is a lower pressing plate perspective structure schematic diagram of the application;

[0025] Figure 6 is a stirring mechanism cross-sectional structure schematic diagram of the application;

[0026] Figure 7 is a stirring mechanism structure schematic diagram of the application;

[0027] Figure 8 is a connecting sleeve rod structure schematic diagram of the application.

[0028] In the drawings:

[0029] 1、Enclosing steel cylinder;

[0030] 2, compaction mechanism; 201, support clasp; 202, hydraulic cylinder; 203, positioning spring; 204, movable baffle; 205, connecting ring plate; 206, conical filter screen; 207, connecting sleeve rod; 2071, positioning clamping rod; 2072, movable sleeve; 2073, clamping block; 2074, buffer spring; 2075, fixed clasp; 2076, threaded groove; 208, lower pressing bottom plate; 2081, hole plate; 2082, fan-shaped baffle;

[0031] 3, drainage mechanism; 301, water tank; 302, curved pipe; 303, conduit; 304, water inlet;

[0032] 4, positioning foot rod;

[0033] 5, stirring mechanism; 501, gear set; 5011, power gear; 5012, gear ring; 5013, transmission gear; 502, fan blade; 503, mesh plate. DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0035] Please refer to Figures 1-8 The present application provides technical solutions:

[0036] A foundation pit dewatering device with filtering function, comprising a surrounding steel cylinder 1, a compaction mechanism 2, a drainage mechanism 3, a positioning foot rod 4 and a stirring mechanism 5.

[0037] The surrounding steel cylinder 1 is connected with the inner wall of the foundation pit, the bottom of the surrounding steel cylinder 1 is provided with the positioning foot rod 4, the bottom end of the positioning foot rod 4 is inserted into the foundation pit, the top of the surrounding steel cylinder 1 is provided with the compaction mechanism 2, the top of the compaction mechanism 2 is provided with the drainage mechanism 3, and the inside of the compaction mechanism 2 is provided with the stirring mechanism 5.

[0038] The compaction mechanism 2 comprises a support clasp 201 connected with the top of the enclosure steel cylinder 1, the bottom of the support clasp 201 is provided with a hydraulic cylinder 202, one end of the hydraulic cylinder 202 is provided with a positioning spring 203, the bottom end of the positioning spring 203 is provided with a movable baffle plate 204, the bottom end of the hydraulic cylinder 202 is provided with a connecting ring plate 205, the center of the connecting ring plate 205 is provided with a conical filter screen 206, the bottom of the connecting ring plate 205 is provided with a connecting sleeve rod 207, the bottom end of the connecting sleeve rod 207 is provided with a pressing bottom plate 208. The hydraulic cylinder 202 is elongated, and the pressing bottom plate 208 at the bottom end of the hydraulic cylinder 202 is moved to compact the foundation pit bottom layer at the bottom of the enclosure steel cylinder 1, reduce the influence of underground seepage water on the loose soil layer, reduce the amount of silt carried in the underground seepage water, improve the strength of the foundation pit, and the hydraulic cylinder 202 drives the movable baffle plate 204 to be pressed synchronously while the hydraulic cylinder 202 drives the movable baffle plate 204 to move downward, the movable baffle plate 204 pressurizes the space at the bottom of the enclosure steel cylinder 1, balances the pressure at the bottom of the foundation pit, reduces the continuous seepage at the bottom of the foundation pit, and improves the compaction effect of the pressing bottom plate 208 on the bottom layer of the foundation pit.

[0039] The pressing bottom plate 208 comprises a hole plate 2081 and a fan-shaped baffle plate 2082, the upper surface of the hole plate 2081 is connected with the bottom of the connecting sleeve rod 207, a plurality of through holes are arranged on the upper surface of the hole plate 2081 in a ring shape and at equal intervals, the fan-shaped baffle plate 2082 is connected with the bottom of the hole plate 2081 through a bearing, the center point of the fan-shaped baffle plate 2082 coincides with that of the hole plate 2081, and a fixed motor is arranged on one side of the fan-shaped baffle plate 2082 through a center rotating shaft. The fixed motor on one side of the fan-shaped baffle plate 2082 drives the fan-shaped baffle plate 2082 to rotate, adjusts and controls the size of the through hole on one side of the hole plate 2081, controls the particle size that can pass through the pressing bottom plate 208, and when the foundation pit bottom is pressed by the hydraulic cylinder 202, the cement mixture at the bottom of the foundation pit is first preliminarily filtered by the pressing bottom plate 208, the working pressure of the conical filter screen 206 is reduced, the size of the through hole at the bottom of the hole plate 2081 is adjusted and controlled according to the different soil qualities, and the applicability of the device is improved.

[0040] The connecting sleeve rod 207 comprises a positioning clamping rod 2071 and a movable sleeve 2072, the bottom end of the movable sleeve 2072 is connected with the upper surface of the hole plate 2081, one end of the positioning clamping rod 2071 is connected with the inner wall of the movable sleeve 2072, the inner wall of the movable sleeve 2072 is provided with a clamping block 2073, one end of the positioning clamping rod 2071 is provided with a buffer spring 2074, one end of the buffer spring 2074 is connected with the inner wall of the movable sleeve 2072, one end of the positioning clamping rod 2071 is provided with a fixed clamping ring 2075, the upper surface of the fixed clamping ring 2075 is connected with the buffer spring 2074, the top end of the buffer spring 2074 is connected with the inner wall of the movable sleeve 2072, the end of the positioning clamping rod 2071 close to the movable sleeve 2072 is provided with a threaded groove 2076, the first end and the last end of the threaded groove 2076 are connected through a vertical sliding groove, the clamping block 2073 is connected with the threaded groove 2076, the positioning clamping rod 2071 is provided with a plurality of, the threaded grooves 2076 provided at the bottom end of the positioning clamping rod 2071 are in the same direction. While the lower pressing plate 208 is pressed down by the hydraulic cylinder 202, the hole plate 2081 in the lower pressing plate 208 pushes the movable sleeve 2072 upwards, so that the positioning clamping rod 2071 slides along the inner wall of the movable sleeve 2072, the positioning clamping rod 2071 drives the fixed clamping ring 2075 to move, and the buffer spring 2074 is stretched in cooperation with the movable sleeve 2072, and the clamping block 2073 provided on the inner wall of the movable sleeve 2072 slides along the vertical sliding groove in the threaded groove 2076, so as to buffer the compaction of the foundation pit by the lower pressing plate 208, and reduce the loss of the durability of the device.

[0041] The drainage mechanism 3 comprises a water tank 301, the water tank 301 is connected with the upper surface of the support clamping ring 201, the top of the water tank 301 is provided with a curved pipe 302, the curved pipe 302 is provided as a U-shaped pipe, one end of the curved pipe 302 away from the water tank 301 is provided with a conduit 303, the bottom end of the conduit 303 is provided with a water inlet 304, the water inlet 304 is connected with the conical filter screen 206. While the hydraulic cylinder 202 is elongated, the pressure at the bottom of the movable baffle 204 in the enclosure steel cylinder 1 is increased, so that the water in the bottom of the foundation pit enters the water inlet 304 through the filtration of the conical filter screen 206, the filtered water flows into the water tank 301 through the conduit 303 and the curved pipe 302, through the U-shaped arrangement of the curved pipe 302, the water in the conical filter screen 206 is accelerated to be discharged by using the siphon effect, and the water is stored in the water tank 301, so as to improve the utilization rate of natural resources of the device and improve the environmental protection of the device.

[0042] The stirring mechanism 5 comprises a gear set 501 connected with the bottom of the connecting ring plate 205, the bottom of the gear set 501 is provided with a fan blade 502 connected with the outer wall of the conical filter screen 206, the bottom of the connecting ring plate 205 is provided with a screen plate 503, the screen plate 503 is provided with a plurality of screen plates, the screen plate 503 is annularly distributed about the center point of the connecting ring plate 205, and one side of the screen plate 503 is attached to the inner wall of the enclosure steel cylinder 1. The fan blade 502 is driven to rotate by the gear set 501, the fan blade 502 stirs the water body between the pressing bottom plate 208 and the connecting ring plate 205, the water body is moved outward by the centrifugal force generated by rotation, the sand and stones with large particle size in the water body are filtered by the screen plate 503 annularly distributed outside the fan blade 502, the blocking of the sand and stones to the water filtering of the conical filter screen 206 is reduced, and the outer wall of the conical filter screen 206 is scraped and washed while the fan blade 502 rotates, so that the water filtering efficiency of the conical filter screen 206 is improved.

[0043] The gear set 501 comprises a power gear 5011 connected with the connecting ring plate 205, one side of the power gear 5011 is provided with a driving motor, the driving motor on one side of the power gear 5011 is connected with the upper surface of the connecting ring plate 205, one side of the power gear 5011 is engaged with a gear ring 5012, the gear ring 5012 is connected with the bottom of the connecting ring plate 205, the bottom of the gear ring 5012 is connected with the fan blade 502, one side of the gear ring 5012 is engaged with a transmission gear 5013, the transmission gear 5013 is provided with a plurality of transmission gears, and the transmission gears 5013 are annularly distributed about the center point of the gear ring 5012. The driving motor on one side of the power gear 5011 is started to rotate, the power gear 5011 drives the gear ring 5012 engaged on one side to rotate, the gear ring 5012 drives the fan blade 502 to rotate, the water body is accelerated to pass through the conical filter screen 206 for filtering by the rotation of the fan blade 502, the separation of the water body and the silt by the device is accelerated, and the working efficiency of the device is improved.

[0044] The top end of the positioning clamping rod 2071 is connected with the transmission gear 5013. The driving motor drives the power gear 5011 to rotate, so that the power gear 5011 drives the meshing gear ring 5012 to rotate, the gear ring 5012 drives the transmission gear 5013 to rotate, the transmission gear 5013 drives the positioning clamping rod 2071 to rotate along the inner wall of the movable sleeve 2072, then the clamping block 2073 slides along the threaded groove 2076, and after the clamping block 2073 moves to the top of the threaded groove 2076, the clamping block 2073 falls along the vertical sliding groove, is buffered through the extrusion buffer spring 2074, drives the movable sleeve 2072 to move up and down, drives the lower pressing plate 208 at the bottom to vibrate up and down through the movable sleeve 2072, adjusts the size of the through hole through the rotation of the fan-shaped baffle 2082 on one side of the hole plate 2081, screens the sand on the upper surface of the pressing plate 208, fills the smaller particle size sand in the backfill of the foundation pit, and then lays the larger particle size sand on the upper layer to form a natural filter layer, compacts the lower pressing plate 208, reduces the amount of small particle size silt brought out when the foundation pit is secondarily infiltrated, and reduces the workload of the foundation pit maintenance.

[0045] The working principle of the present application is as follows:

[0046] First, the positioning foot rod 4 arranged at the bottom of the enclosure steel cylinder 1 is inserted into the foundation pit, so that the relative position of the enclosure steel cylinder 1 and the foundation pit is fixed, and the water seepage at the bottom of the enclosure steel cylinder 1 is treated.

[0047] The hydraulic cylinder 202 is elongated, and drives the lower pressing plate 208 at the bottom end of the hydraulic cylinder 202 to move, so as to compact the bottom layer of the foundation pit at the bottom of the enclosure steel cylinder 1; while the hydraulic cylinder 202 drives the lower pressing plate 208 to move downward, the movable baffle 204 is synchronously pressed downward by the hydraulic cylinder 202, the space at the bottom of the enclosure steel cylinder 1 is pressurized by the movable baffle 204, the pressure balance of the bottom of the foundation pit is achieved, the continuous water seepage of the bottom of the foundation pit is reduced, and the compaction effect of the lower pressing plate 208 on the bottom layer of the foundation pit is improved.

[0048] Meanwhile, the pressure at the bottom of the movable baffle 204 in the enclosure steel cylinder 1 is increased, so that the water in the foundation pit enters the water inlet 304 through the filtering of the conical filter screen 206; under the action of pressure, the filtered water flows into the water tank 301 through the conduit 303 and the curved pipe 302; the U-shaped arrangement of the curved pipe 302 accelerates the discharge of the water in the conical filter screen 206 by using the siphon effect, and the water is stored in the water tank 301.

[0049] When the water at the bottom of the foundation pit passes through the conical filter screen 206, the drive motor on one side of the power gear 5011 is started to rotate, the power gear 5011 drives the meshing gear ring 5012 on one side to rotate, the gear ring 5012 drives the fan blade 502 to rotate, and the rotation of the fan blade 502 accelerates the water passing through the conical filter screen 206 for filtering, the fan blade 502 scrapes and washes along the outer wall of the conical filter screen 206, reduces the blockage of the conical filter screen 206 by the silt, and accelerates the separation of the water and the silt;

[0050] When the bottom of the foundation pit is compacted by the lower pressing plate 208, the fixed motor on one side of the fan-shaped baffle 2082 drives the fan-shaped baffle 2082 to rotate, the size of the through hole on one side of the hole plate 2081 is adjusted, the particle size that can pass through the lower pressing plate 208 is controlled, when the foundation pit bottom is pressed down by the hydraulic cylinder 202, the cement mixture at the bottom of the foundation pit is first filtered by the lower pressing plate 208, the working pressure of the conical filter screen 206 is reduced, the size of the through hole at the bottom of the hole plate 2081 is adjusted according to the different soil, the water containing impurities is flowed to the space between the lower pressing plate 208 and the connecting ring plate 205, the water is rotated by rotating the fan blade 502, the sand and stone with large mass in the water is separated from the conical filter screen 206 by centrifugal force, the sand and stone with large mass in the water is separated from the center of the enclosing steel cylinder 1 by centrifugal force, the mesh plate 503 is attached to the inner wall of the enclosing steel cylinder 1, the water is rotated by rotating the fan blade 502, the sand and stone with large mass outside the water is filtered and blocked by the mesh plate 503 cooperating with the inner wall of the enclosing steel cylinder 1, and the pressure of the sand and stone with large mass on the water filtering of the conical filter screen 206 is reduced;

[0051] When the water at the bottom of the foundation pit flows to the upper surface of the hole plate 2081 through the through hole of the hole plate 2081 by the pressing bottom plate 208, the sector-shaped baffle 2082 is rotated to close the through hole on the hole plate 2081, and the water between the pressing bottom plate 208 and the connecting ring plate 205 is absorbed by the drainage mechanism 3, then the hydraulic cylinder 202 is retracted to lift the mud on the upper surface of the pressing bottom plate 208, and then the driving motor is started to drive the power gear 5011 to rotate, so that the power gear 5011 drives the meshing gear ring 5012 to rotate, the gear ring 5012 drives the transmission gear 5013 to rotate, the transmission gear 5013 drives the positioning clamping rod 2071 to rotate along the inner wall of the movable sleeve 2072, then the clamping block 2073 slides along the threaded groove 2076, and the clamping block 2073 moves to the top of the threaded groove 2076 and then falls along the vertical sliding slot, is buffered by the extrusion buffer spring 2074, and at the same time drives the movable sleeve 2072 to move up and down, drives the bottom pressing bottom plate 208 to vibrate up and down through the movable sleeve 2072, adjusts the size of the through hole by rotating the sector-shaped baffle 2082 on one side of the hole plate 2081, and screens the sand and stone on the upper surface of the pressing bottom plate 208. The sand and stone with smaller particle size are backfilled to the bottom of the foundation pit, and then the sand and stone with larger particle size are laid on the upper layer to form a natural filter layer, and the lower pressing bottom plate 208 is compacted to reduce the amount of small particle size mud brought out when the foundation pit is secondarily infiltrated.

[0052] When the movable sleeve 2072 drives the bottom pressing bottom plate 208 to vibrate up and down, the vibration is transmitted to the connecting ring plate 205 through the positioning clamping rod 2071, and the mesh plate 503, the fan blade 502 and the conical filter screen 206 at the bottom of the connecting ring plate 205 are vibrated, so that the sand particles adhered to the mesh plate 503, the fan blade 502 and the conical filter screen 206 are cleaned.

[0053] After the sand and stone are laid on the bottom of the foundation pit, the sector-shaped baffle 2082 is rotated to close the through hole on the hole plate 2081 in the pressing bottom plate 208, and then the elongated hydraulic cylinder 202 drives the pressing bottom plate 208 to compact the bottom layer of the foundation pit.

[0054] When the pressing bottom plate 208 is compacted downward by the hydraulic cylinder 202, the hole plate 2081 in the pressing bottom plate 208 pushes the movable sleeve 2072 upward, so that the positioning clamping rod 2071 slides along the inner wall of the movable sleeve 2072, the positioning clamping rod 2071 drives the fixed clamping ring 2075 to move, stretches the buffer spring 2074 in cooperation with the movable sleeve 2072, and at the same time the clamping block 2073 arranged on the inner wall of the movable sleeve 2072 slides along the vertical sliding slot in the threaded groove 2076. The buffer spring 2074 buffers the compaction of the pressing bottom plate 208 to the foundation pit, the relative position of the threaded groove 2076 on the positioning clamping rod 2071 and the clamping block 2073 on the inner wall of the movable sleeve 2072 is adjusted by rotating the positioning clamping rod 2071, and the relative position of the pressing bottom plate 208 and the connecting ring plate 205 is controlled.

[0055] It should be noted that the relationship terms, such as first and second, and the like, are used only to differentiate one entity or action from another, and do not necessarily require or imply any actual relationship or order between or among such entities or actions. Moreover, the terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0056] Finally, it should be noted that the above-described embodiments are merely possible implementations of the present application, and thus are not used to limit the present application. Although the present application has been described in detail with reference to the foregoing embodiments, the technical solutions recorded in the foregoing embodiments can still be modified or equivalent replaced by a person skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A ground foundation pit dewatering device with filtering function, characterized in that: It comprises a surrounding steel cylinder (1), a compaction mechanism (2), a drainage mechanism (3), a positioning foot rod (4) and a stirring mechanism (5); The surrounding steel cylinder (1) is connected with the inner wall of the foundation pit, the bottom of the surrounding steel cylinder (1) is provided with the positioning foot rod (4), the bottom end of the positioning foot rod (4) is inserted into the foundation pit, the top of the surrounding steel cylinder (1) is provided with the compaction mechanism (2), the top of the compaction mechanism (2) is provided with the drainage mechanism (3), and the inside of the compaction mechanism (2) is provided with the stirring mechanism (5); The compaction mechanism (2) comprises a supporting clasp (201), the supporting clasp (201) is connected with the top of the surrounding steel cylinder (1), the bottom of the supporting clasp (201) is provided with a hydraulic cylinder (202), one end of the hydraulic cylinder (202) is provided with a positioning spring (203), the bottom end of the positioning spring (203) is provided with a movable baffle (204), the bottom end of the hydraulic cylinder (202) is provided with a connecting ring plate (205), the center of the connecting ring plate (205) is provided with a conical filter screen (206), the bottom of the connecting ring plate (205) is provided with a connecting sleeve rod (207), and the bottom end of the connecting sleeve rod (207) is provided with a lower pressing bottom plate (208). The stirring mechanism (5) comprises a gear set (501), the gear set (501) is connected with the bottom of the connecting ring plate (205), the bottom of the gear set (501) is provided with a fan blade (502), the fan blade (502) is connected with the outer wall of the conical filter screen (206), the bottom of the connecting ring plate (205) is provided with a mesh plate (503), a plurality of mesh plates (503) are arranged, the mesh plates (503) are annularly distributed about the center point of the connecting ring plate (205), and one side of the mesh plate (503) is attached to the inner wall of the surrounding steel cylinder (1).

2. The ground pit dewatering device with filtering function according to claim 1, characterized in that: The drainage mechanism (3) comprises a water tank (301), the water tank (301) is connected with the upper surface of the supporting clasp (201), the top of the water tank (301) is provided with a curved pipe (302), the curved pipe (302) is arranged in a U-shaped pipe, one end, away from the water tank (301), of the curved pipe (302) is provided with a guide pipe (303), the bottom end of the guide pipe (303) is provided with a water inlet (304), and the water inlet (304) is connected with the conical filter screen (206).

3. The ground pit dewatering device with filtering function according to claim 2, characterized in that: The gear set (501) includes a power gear (5011) connected with the connecting ring plate (205), one side of the power gear (5011) is provided with a driving motor, the driving motor on one side of the power gear (5011) is connected with the upper surface of the connecting ring plate (205), the power gear (5011) is engaged with a gear ring (5012) on one side, the gear ring (5012) is connected with the bottom of the connecting ring plate (205), the bottom of the gear ring (5012) is connected with a fan blade (502), the gear ring (5012) is engaged with a transmission gear (5013) on one side, the transmission gear (5013) is provided with a plurality of transmission gears (5013), and the transmission gears (5013) are annularly distributed about the center point of the gear ring (5012).

4. The ground pit dewatering device with filtering function according to claim 3, characterized in that: The lower pressing bottom plate (208) includes a hole plate (2081) and a fan-shaped baffle (2082), the upper surface of the hole plate (2081) is connected with the bottom of the connecting sleeve rod (207), a plurality of through holes are annularly and equidistantly formed in the upper surface of the hole plate (2081), the fan-shaped baffle (2082) is connected with the bottom of the hole plate (2081) through a bearing, the center point of the fan-shaped baffle (2082) coincides with that of the hole plate (2081), and the fan-shaped baffle (2082) is provided with a fixed motor on one side through a central rotating shaft.

5. The ground pit dewatering device with filtering function according to claim 4, characterized in that: The connecting sleeve rod (207) includes a positioning clamping rod (2071) and a movable sleeve (2072), the bottom end of the movable sleeve (2072) is connected with the upper surface of the hole plate (2081), one end of the positioning clamping rod (2071) is connected with the inner wall of the movable sleeve (2072), the inner wall of the movable sleeve (2072) is provided with a clamping block (2073), one end of the positioning clamping rod (2071) is provided with a buffer spring (2074), one end of the buffer spring (2074) is connected with the inner wall of the movable sleeve (2072), one end of the positioning clamping rod (2071) is provided with a fixed clamping ring (2075), the upper surface of the fixed clamping ring (2075) is connected with the buffer spring (2074), the top end of the buffer spring (2074) is connected with the inner wall of the movable sleeve (2072), a threaded groove (2076) is formed in the end of the positioning clamping rod (2071) close to the movable sleeve (2072), the first end and the last end of the threaded groove (2076) are communicated through a vertical sliding groove, and the clamping block (2073) is connected with the threaded groove (2076).

6. The ground pit dewatering device with filtering function according to claim 5, characterized in that: The top end of the positioning clamping rod (2071) is connected with the transmission gear (5013), the positioning clamping rod (2071) is provided with a plurality of positioning clamping rods (2071), and the threaded grooves (2076) formed in the bottom ends of the positioning clamping rods (2071) are in the same direction.

Images