Dewatering device for deep foundation pit in silt geology

Abstract

The utility model discloses a silt geology deep foundation pit dewatering device which comprises a supporting frame, a winding device is installed on the upper side of the supporting frame, a lifting rope is connected to the bottom of the winding device, and a dewatering structure is connected to one end of the bottom of the lifting rope. The device has the beneficial effects that a dewatering structure is adopted in the technical scheme, before foundation pit construction, the connecting cylinder can be fed into the foundation pit through the winding device, water in the foundation pit is pumped and dewatered through the water suction pump, meanwhile, the outer filter cylinder and the inner filter cylinder are matched, the water in the foundation pit can be filtered, and the water in the foundation pit can be recycled. And clods and hard objects are prevented from entering the water suction pump, the service life of the water suction pump is prolonged, the protection performance of the device is improved through the four protection assemblies, and the service life of the device is further prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of foundation pit dewatering, in particular to a dewatering device for a deep foundation pit in silt sand geology. Background Art

[0002] Foundation pit dewatering refers to the dewatering work done when the groundwater level is higher than the bottom of the excavation during foundation pit excavation to ensure that the foundation pit can be constructed under dry conditions and to prevent slope instability, foundation sand flow, pit bottom uplift, pit bottom pipe bursting and reduced foundation bearing capacity.

[0003] Most of the existing technologies use a pump placed inside the foundation pit to pump out the groundwater in the foundation pit, thereby achieving the purpose of dewatering the foundation pit. However, during the process, the pump is prone to collide with the inner wall of the foundation pit, causing damage to the pump. At the same time, some mud and hard objects enter the pump during the pumping process, causing damage to the pump and affecting the service life of the pump.

[0004] Based on the above problems, there may already be technical means in the current technology to solve the above technical solutions. This case intends to provide an alternative or replacement technical means. Utility Model Content

[0005] To achieve the above purpose, the utility model is implemented by the following technical scheme: a dewatering device for deep foundation pit in silt sand geology, comprising a support frame, a hoisting device is installed on the upper side of the support frame, a lifting rope is connected to the bottom of the hoisting device, and a dewatering structure is connected to one end of the bottom of the lifting rope, and the dewatering structure includes:

[0006] A connecting tube, a fixing frame, two limiting grooves, a connecting block, two fixing bolts, two plug-in blocks, an inner filter cartridge, a first limiting ring, a bottom plate, an outer filter cartridge, a second limiting ring, a water pump, a drain pipe and four protective components;

[0007] The fixing frame is installed on the top of the connecting tube, the two limiting grooves are opened on the inner wall of the lower side of the connecting tube, the top of the connecting block is plugged into the bottom of the connecting tube, the two plug-in blocks are respectively installed on the upper side of the connecting block, the two plug-in blocks are plugged into the two limiting grooves, the two fixing bolts are threadedly connected to the lower side of the connecting tube, the top of the inner filter tube is connected to the bottom of the connecting block, the first limiting ring is installed on the bottom of the connecting block, the bottom of the outer filter tube is connected to the top of the bottom plate, the second limiting ring is installed on the top of the bottom plate, the top of the outer filter tube is plugged into the bottom of the first limiting ring, the bottom of the inner filter tube is plugged into the top of the second limiting ring, the bottom of the water pump is connected to the top of the bottom plate, one end of the drain pipe is connected to the water pump, and the other end passes through the connecting pipe, the connecting tube and the fixing frame, and the four protective components are installed on the outside of the connecting tube.

[0008] Preferably, one of the four protection components comprises: two spring rods and an arc block;

[0009] One end of the two spring rods is connected to the outer side of the connecting tube, and the other end is connected to the inner side of the arc block.

[0010] Preferably, the limiting groove is configured as an inverted L-shape.

[0011] Preferably, a groove is provided in the middle portion of the connecting block.

[0012] Preferably, a connecting bolt is provided at the insertion point between the outer filter cartridge and the first limiting ring.

[0013] Preferably, a lifting ring is provided on the top of the fixing frame, a hook is provided at one end of the lifting rope, and the hook is connected to the lifting ring.

[0014] Beneficial Effects

[0015] The utility model provides a dewatering device for deep foundation pits in silt sand geology, which has the following beneficial effects: the technical solution adopts a dewatering structure, and before the foundation pit construction, the connecting tube can be sent into the interior of the foundation pit by using a winch device, and the water inside the foundation pit can be extracted and dewatered by using a water pump. At the same time, the outer filter cartridge and the inner filter cartridge cooperate to filter the water inside the foundation pit, preventing mud and hard objects from entering the water pump, thereby increasing the service life of the water pump, and four protective components are used to increase the protection of the device, further increasing the service life of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the main structure of a silt geological deep foundation pit dewatering device described in the utility model.

[0017] Figure 2 This is a schematic diagram of the disassembled structure of a silt geological deep foundation pit dewatering device described in the utility model.

[0018] Figure 3 The utility model is a schematic diagram of the top view of the structure of a dewatering device for a deep foundation pit in silt geological conditions.

[0019] Figure 4 It is a partially enlarged structural schematic diagram of a silt geological deep foundation pit dewatering device described in the utility model.

[0020] In the figure: 1, support frame, 2, hoisting device, 3, lifting rope, 4, connecting tube, 5, fixing frame, 6, limiting groove, 7, connecting block, 8, fixing bolt, 9, plug-in block, 10, inner filter cartridge, 11, first limiting ring, 12, bottom plate, 13, outer filter cartridge, 14, second limiting ring, 15, water pump, 16, drain pipe, 17, spring rod, 18, arc block, 19, connecting bolt. DETAILED DESCRIPTION

[0021] Based on the embodiments of the present utility model, all other embodiments obtained by ordinary technicians in the field without making any creative work shall fall within the scope of protection of the present utility model. Example

[0022] See also Figure 1-4 ,The utility model provides a technical solution: a dewatering device for deep foundation pit in silt sand geology;

[0023] This case aims to provide a device that is conducive to the dewatering of deep foundation pits in silt sand geology. The existing dewatering devices have poor protection. At the same time, during the dewatering process, mud and hard objects are easy to enter the pump, affecting the service life of the pump.

[0024] Based on the above problems, the components in this case include a support frame 1, a hoisting device 2 is installed on the upper side of the support frame 1, a lifting rope 3 is connected to the bottom of the hoisting device 2, and a precipitation structure is connected to one end of the bottom of the lifting rope 3. The precipitation structure includes:

[0025] Connecting cylinder 4, fixing frame 5, two limiting grooves 6, connecting block 7, two fixing bolts 8, two plug-in blocks 9, inner filter cylinder 10, first limiting ring 11, bottom plate 12, outer filter cylinder 13, second limiting ring 14, water pump 15, drain pipe 16 and four protective components;

[0026] The fixing frame 5 is installed on the top of the connecting tube 4, two limiting grooves 6 are opened on the inner wall of the lower side of the connecting tube 4, the top of the connecting block 7 is plugged with the bottom of the connecting tube 4, the two plug-in blocks 9 are respectively installed on the upper side of the connecting block 7, the two plug-in blocks 9 are plugged with the two limiting grooves 6, the two fixing bolts 8 are threadedly connected with the lower side of the connecting tube 4, the top of the inner filter cartridge 10 is connected with the bottom of the connecting block 7, the first limiting ring 11 is installed at the bottom of the connecting block 7, the bottom of the outer filter cartridge 13 is connected with the top of the bottom plate 12, the second limiting ring 14 is installed at the top of the bottom plate 12, the top of the outer filter cartridge 13 is plugged with the bottom of the first limiting ring 11, the bottom of the inner filter cartridge 10 is plugged with the top of the second limiting ring 14, the bottom of the water pump 15 is connected with the top of the bottom plate 12, one end of the drain pipe 16 is connected to the water pump 15, and the other end passes through the connecting pipe, the connecting tube 4 and the fixing frame 5, and four protective components are installed on the outside of the connecting tube 4;

[0027] Four protection components, one of which includes: two spring rods 17 and an arc block 18;

[0028] One end of the two spring rods 17 is connected to the outside of the connecting tube 4, and the other end is connected to the inside of the arc block 18;

[0029] It should be noted that before the dewatering operation is carried out on the deep foundation pit of silt sand geology, the top of the connecting block 7 is first plugged into the bottom of the connecting tube 4. At this time, the two plug-in blocks 9 are plugged into the two limit grooves 6. Then the connecting block 7 is rotated counterclockwise to make the plug-in block 9 move laterally inside the limit groove 6, thereby completing the connection between the connecting tube 4 and the connecting block 7. At this time, the groove in the middle part of the connecting block 7 corresponds to the position of the two fixing bolts 8. At this time, the operator rotates the two fixing bolts 8 to allow one end of the fixing bolt 8 to be inserted into the groove, thereby increasing the tightness of the connection between the connecting tube 4 and the connecting block 7. Then the first The limiting ring 11, the outer filter cartridge 13, the second limiting ring 14, and the inner filter cartridge 10 are correspondingly plugged, and the connecting bolts 19 are used to increase the tightness of the connection between the first limiting ring 11 and the outer filter cartridge 13. After the connection is completed, the hook is connected to the lifting ring, and the hoisting device 2 on the upper side of the support frame 1 is used to put the connecting tube 4 and other components into the foundation pit. Through the cooperation of the water pump 15 and the drainage pipe 16, the purpose of deep foundation pit dewatering can be achieved. The outer filter cartridge 13 and the inner filter cartridge 10 filter the water inside the foundation pit to prevent mud and hard objects from entering the water pump 15, thereby increasing the service life of the water pump 15.

[0030] It should be emphasized that when the connecting tube 4 and other components are placed inside the foundation pit, they will collide with the inner wall of the foundation pit. At this time, the two spring rods 17 and the arc block 18 cooperate to protect the outer side of the connecting tube 4 and absorb the impact force generated by the collision, so as to achieve the purpose of increasing the service life of the device. After the precipitation operation is completed, the operator can separate the first limiting ring 11, the outer filter cartridge 13, the second limiting ring 14 and the inner filter cartridge 10 from each other and clean them to prevent the gap between the inner filter cartridge 10 and the outer filter cartridge 13 from accumulating mud and sand, which will affect the subsequent precipitation operation.

[0031] The upper side of the fixed frame 5 is connected to one end of the lifting rope 3 through a hook and a lifting ring. The hoisting device 2 is mainly composed of a motor, a gear box and a hoisting roller. With the lifting rope 3, the connection tube 4 can be raised and lowered at the bottom of the foundation pit.

[0032] Based on the above technical scheme, this case can achieve the purpose of dewatering deep foundation pits in silt sand geology, and in the process of dewatering, the water inside the foundation pit can be filtered to prevent mud and hard objects from entering the water pump 15, thereby increasing the service life of the water pump 15. In the process of the connecting tube 4 entering the foundation pit, the spring rod 17 and the arc block 18 cooperate to protect the connecting tube 4 to prevent damage to components such as the connecting tube 4. The case has the characteristics of long service life and safe use.

[0033] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A dewatering device for deep foundation pit in silt sand geology, comprising a support frame, a hoisting device is installed on the upper side of the support frame, a lifting rope is connected to the bottom of the hoisting device, and a dewatering structure is connected to one end of the bottom of the lifting rope, characterized in that: The precipitation structure comprises: A connecting tube, a fixing frame, two limiting grooves, a connecting block, two fixing bolts, two plug-in blocks, an inner filter cartridge, a first limiting ring, a bottom plate, an outer filter cartridge, a second limiting ring, a water pump, a drain pipe and four protective components; The fixing frame is installed on the top of the connecting tube, the two limiting grooves are opened on the inner wall of the lower side of the connecting tube, the top of the connecting block is plugged into the bottom of the connecting tube, the two plug-in blocks are respectively installed on the upper side of the connecting block, the two plug-in blocks are plugged into the two limiting grooves, the two fixing bolts are threadedly connected to the lower side of the connecting tube, the top of the inner filter tube is connected to the bottom of the connecting block, the first limiting ring is installed on the bottom of the connecting block, the bottom of the outer filter tube is connected to the top of the bottom plate, the second limiting ring is installed on the top of the bottom plate, the top of the outer filter tube is plugged into the bottom of the first limiting ring, the bottom of the inner filter tube is plugged into the top of the second limiting ring, the bottom of the water pump is connected to the top of the bottom plate, one end of the drain pipe is connected to the water pump, and the other end passes through the connecting pipe, the connecting tube and the fixing frame, and the four protective components are installed on the outside of the connecting tube.

2. A dewatering device for deep foundation pit in silt geological conditions according to claim 1, characterized in that: One of the four protection components comprises: two spring rods and an arc block; One end of the two spring rods is connected to the outer side of the connecting tube, and the other end is connected to the inner side of the arc block.

3. The dewatering device for deep foundation pit in silt geological conditions according to claim 1 is characterized in that: The limiting groove is set to be an inverted L-shape.

4. The dewatering device for deep foundation pit in silt sand geology according to claim 1 is characterized in that: A groove is provided in the middle part of the connecting block.

5. The dewatering device for deep foundation pit in silt sand geology according to claim 1 is characterized in that: A connecting bolt is provided at the insertion point between the outer filter cartridge and the first limiting ring.

6. The dewatering device for deep foundation pit in silt sand geology according to claim 1 is characterized in that: A lifting ring is arranged on the top of the fixing frame, a hook is arranged at one end of the lifting rope, and the hook is connected with the lifting ring.

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