Foundation pit dewatering equipment

Abstract

The utility model discloses a kind of foundation pit dewatering equipment, belong to foundation pit dewatering technical field, including steel wire rope, two steel wire ropes are fixedly connected with lower connecting plate and the upper connecting plate located above lower connecting plate, the side wall of lower connecting plate and upper connecting plate opposite is all installed with touch switch, the upper fixed connection of floating plate is located between lower connecting plate and upper connecting plate and is matched with touch switch platen.The utility model is set by floating plate, lower connecting plate, upper connecting plate, touch switch and platen, floating plate floats on water surface, can be lifted along with water level, so when floating plate is lifted along with water level height, platen is lifted between two touch switches, when liquid level reaches minimum, platen contacts touch switch on lower connecting plate, and submersible pump is closed, and in liquid level rises and causes platen to contact touch switch on upper connecting plate, and submersible pump is opened, and water is pumped out, to realize automatic start-stop, reduce manpower input, and it is more reliable.

Description

Technical Field

[0001] This utility model relates to a foundation pit dewatering device, belonging to the field of foundation pit dewatering technology. Background Technology

[0002] Dewatering of foundation pits, also known as foundation pit drainage or foundation pit decanting, refers to the process of lowering the groundwater level in and around the foundation pit during underground engineering construction to ensure construction safety and smooth progress. The purpose of foundation pit dewatering is to create a dry working environment and prevent groundwater from affecting construction, such as causing soil liquefaction, foundation pit collapse, and a decrease in foundation bearing capacity. Common foundation pit dewatering methods include open ditch drainage, wellpoint dewatering, cutoff wall methods, and deep well dewatering. Deep well dewatering involves drilling deep wells near or inside the foundation pit and using pumps to extract groundwater.

[0003] Application CN202422020951.7 discloses a foundation pit dewatering construction structure, belonging to the field of building construction technology. The foundation pit dewatering construction structure includes a dewatering well and a filter box installed within the dewatering well. The filter box includes a pumping tank and a filter barrel fixedly installed on the pumping tank. The filter barrel has an inlet, and a side wall portion of the pumping tank extends into the filter barrel to form a filter outlet. A filter screen is installed at the filter outlet. A water pump is installed inside the pumping tank, and the outlet of the water pump is connected to a drain pipe through the pumping tank. The beneficial effect of this application is that it provides a foundation pit dewatering construction structure that facilitates filtering and removing blockages from the dewatering well.

[0004] The device still has the following problems. In order to prevent settlement, the pit dewatering needs to be stopped after the water level is lowered to a certain level. This requires frequent start-ups and shutdowns, which requires personnel to monitor the device constantly, which is a waste of manpower.

[0005] Therefore, this utility model proposes a new solution. Utility Model Content

[0006] The main purpose of this utility model is to provide a foundation pit dewatering device to overcome the shortcomings of the existing technology.

[0007] The objective of this utility model can be achieved by adopting the following technical solution:

[0008] A foundation pit dewatering device includes a dewatering well, an installation frame installed at the wellhead, a winch installed above the installation frame, two steel wire ropes installed at the bottom of the winch, a counterweight connected to the bottom ends of the two steel wire ropes, a float plate slidably installed between the two steel wire ropes, a submersible pump installed in the middle of the dewatering well below the float plate, a water outlet pipe connected to the output end of the submersible pump, a lower connecting plate and an upper connecting plate fixedly connected between the two steel wire ropes, touch switches installed on the opposite sidewalls of the lower and upper connecting plates, and a pressure plate fixedly connected above the float plate, located between the lower and upper connecting plates and cooperating with the touch switches.

[0009] Preferably, the top of the counterweight is fixedly connected to a lug that is connected to the wire rope.

[0010] Preferably, the float plate, the lower connecting plate, and the upper connecting plate are all provided with through holes in the middle for installing the water outlet pipe.

[0011] Preferably, both ends of the lower connecting plate and the upper connecting plate are fixedly connected to sleeves that are fitted onto the outer wall of the wire rope. The outer wall of the sleeve is provided with a screw hole, and a compression bolt is installed on the inner side of the screw hole.

[0012] Preferably, the float comprises two semi-floating plates fixedly connected by fixing bolts.

[0013] Preferably, a filter frame is fixedly connected to the bottom of the float, and the submersible pump is installed inside the filter frame. The filter frame includes two halves that are respectively fixedly connected to the bottom of the semi-floating board.

[0014] Preferably, a support rod is fixedly connected to the top of each of the two semi-floating plates, and a screw is fixedly connected to the top of the support rod. The pressure plate is movably installed between the two screws, and a nut located on the top of the pressure plate is installed on the outer wall of the screw.

[0015] Preferably, a hexagonal countersunk hole is provided on one side of the semi-floating plate, and a circular countersunk hole is provided on the other side of the semi-floating plate.

[0016] Preferably, both ends of the float are fitted with sliding tubes that are sleeved on the outer wall of the wire rope, and the upper and lower ends of the sliding tubes are fixedly connected with fixing plates located on the upper and lower surfaces of the float.

[0017] Preferably, the float plate has mounting holes that mate with the slide tube.

[0018] The beneficial technical effects of this utility model are as follows: According to the foundation pit dewatering equipment of this utility model:

[0019] 1. With the setup of a float plate, lower connecting plate, upper connecting plate, touch switches, and pressure plate, the float plate floats on the water surface and can rise and fall with the water level. Therefore, as the float plate rises and falls with the water level, the pressure plate rises and falls between two touch switches. When the liquid level reaches the lowest point, the pressure plate contacts the touch switch on the lower connecting plate to shut off the submersible pump. When the liquid level rises, the pressure plate contacts the touch switch on the upper connecting plate to start the submersible pump to pump water, thereby achieving automatic start and stop, reducing manual labor and being relatively reliable.

[0020] 2. The winch and wire rope are used to guide the movement. A counterweight is connected to the bottom of both wire ropes to keep them vertical, thus ensuring that the float can slide up and down. When maintenance is required, the winch can be used to wind up the wire rope to raise the bottom components to the wellhead for easy maintenance. Attached Figure Description

[0021] Figure 1 This is a cross-sectional view of the overall structure according to a preferred embodiment of the present invention;

[0022] Figure 2 This is a schematic diagram of the overall structure according to a preferred embodiment of the present invention;

[0023] Figure 3 This is a schematic diagram of a wire rope connection structure according to a preferred embodiment of the present invention;

[0024] Figure 4 This is an exploded view of a wire rope connection structure according to a preferred embodiment of the present invention;

[0025] Figure 5 This is a schematic diagram of a floating plate structure according to a preferred embodiment of the present invention;

[0026] Figure 6 This is a schematic diagram of a sleeve structure according to a preferred embodiment of the present invention.

[0027] In the diagram: 1. Dewatering well; 2. Mounting frame; 3. Winch; 4. Wire rope; 5. Counterweight; 6. Float; 7. Submersible pump; 8. Outlet pipe; 9. Lower connecting plate; 10. Upper connecting plate; 11. Touch switch; 12. Pressure plate; 13. Hanging lug; 14. Sleeve; 15. Screw hole; 16. Extrusion bolt; 17. Fixing bolt; 601. Semi-floating plate; 602. Hexagonal countersunk hole; 603. Circular countersunk hole; 18. Filter frame; 181. Half frame; 19. Support rod; 20. Screw; 21. Nut; 22. Sliding tube; 23. Fixing plate; 24. Mounting hole. Detailed Implementation

[0028] To enable those skilled in the art to understand the technical solution of this utility model more clearly, the present utility model will be further described in detail below with reference to the embodiments and accompanying drawings, but the implementation of this utility model is not limited thereto.

[0029] like Figures 1-6 As shown, the foundation pit dewatering equipment provided in this embodiment includes a dewatering well 1, an installation frame 2 installed at the wellhead of the dewatering well 1, a winch 3 installed above the installation frame 2, two steel wire ropes 4 installed at the bottom of the winch 3, a counterweight 5 connected to the bottom ends of the two steel wire ropes 4, a float 6 slidably installed between the two steel wire ropes 4, a submersible pump 7 installed in the middle of the dewatering well 1 below the float 6, a water outlet pipe 8 connected to the output end of the submersible pump 7, a lower connecting plate 9 and an upper connecting plate 10 fixedly connected between the two steel wire ropes 4, a touch switch 11 installed on the opposite sidewalls of the lower connecting plate 9 and the upper connecting plate 10, and a pressure plate 12 fixedly connected above the float 6 between the lower connecting plate 9 and the upper connecting plate 10 and cooperating with the touch switch 11. With the arrangement of float plate 6, lower connecting plate 9, upper connecting plate 10, touch switch 11, and pressure plate 12, float plate 6 floats on the water surface and rises and falls with the water level. Therefore, as float plate 6 rises and falls with the water level, pressure plate 12 moves between the two touch switches 11. When the liquid level reaches its lowest point, pressure plate 12 contacts touch switch 11 on lower connecting plate 9, shutting off submersible pump 7. When the liquid level rises, pressure plate 12 contacts touch switch 11 on upper connecting plate 10, starting submersible pump 7 to pump water, thus achieving automatic start and stop, reducing manual labor, and is relatively reliable. There are two installation methods for submersible pump 7, one of which is direct installation in dewatering well 1. Located below the float 6, another option is to fix it to the bottom of the float 6. When installed at the bottom of the float 6, it can rise and fall with the float 6 and will not sink to the bottom of the dewatering well 1, thereby reducing the blockage of the submersible pump 7 by bottom silt. With the setting of winch 3 and wire rope 4, the wire rope 4 plays a guiding role. The bottom ends of the two wire ropes 4 are connected to counterweights 5, which can keep the wire ropes 4 vertical, thereby ensuring that the float 6 can slide up and down. When maintenance is required, the bottom components can be raised to the wellhead by winding the wire rope 4 with winch 3 for easy maintenance. It should be noted that the touch switch 11 used in this application is a waterproof touch switch.

[0030] In this embodiment, as Figure 1 , Figure 2 and Figure 3 As shown, the top of the counterweight 5 is fixedly connected to a lug 13 that is interconnected with the wire rope 4. The float 6, the lower connecting plate 9, and the upper connecting plate 10 all have through holes in the middle for installing the water outlet pipe 8. The lug 13 facilitates the loading and unloading of the counterweight 5.

[0031] In this embodiment, as Figure 3 , Figure 4 and Figure 6 As shown, both ends of the lower connecting plate 9 and the upper connecting plate 10 are fixedly connected to sleeves 14 that are fitted onto the outer wall of the wire rope 4. Screw holes 15 are provided on the outer wall of the sleeves 14, and clamping bolts 16 are installed inside the screw holes 15. Through the arrangement of the sleeves 14, screw holes 15, and clamping bolts 16, the positions of the lower connecting plate 9 and the upper connecting plate 10 can be adjusted as needed, thereby adjusting the positions of the two touch switches 11, and consequently, adjusting the depth of the pit dewatering.

[0032] In this embodiment, as Figure 3 , Figure 4 and Figure 5 As shown, the float plate 6 includes two semi-floating plates 601 fixedly connected by fixing bolts 17. One side of each semi-floating plate 601 has a hexagonal countersunk hole 602, and the other side has a circular countersunk hole 603. The float plate 6, comprising two semi-floating plates 601 fixedly connected by fixing bolts 17, allows for quick assembly and disassembly. The hexagonal countersunk hole 602 and the circular countersunk hole 603 facilitate the installation and removal of the fixing bolts 17.

[0033] In this embodiment, as Figure 3 , Figure 4 and Figure 5 As shown, a filter frame 18 is fixedly connected to the bottom of the float plate 6, and the submersible pump 7 is installed inside the filter frame 18. The filter frame 18 includes two half-frames 181 that are respectively fixedly connected to the bottom of the semi-floating plate 601. When the submersible pump 7 is installed at the bottom of the float plate 6, the filter frame 18 at the bottom of the float plate 6 is used to place the submersible pump 7, which can filter mud and sand and prevent the submersible pump 7 from being blocked and damaged. The filter frame 18 includes two half-frames 181 that are respectively fixedly connected to the bottom of the semi-floating plate 601, so it can be opened with the float plate 6, thereby facilitating the installation, removal and maintenance of the submersible pump 7.

[0034] In this embodiment, as Figure 3 , Figure 4 and Figure 5 As shown, support rods 19 are fixedly connected to the top of each of the two semi-floating plates 601, and screws 20 are fixedly connected to the top of the support rods 19. A pressure plate 12 is movably installed between the two screws 20, and a nut 21 located on the top of the pressure plate 12 is installed on the outer wall of the screws 20. The support rods 19, screws 20, and nut 21 facilitate the installation of the pressure plate 12.

[0035] In this embodiment, as Figure 3 , Figure 4 and Figure 5As shown, both ends of the float plate 6 are equipped with sliding tubes 22 that are sleeved on the outer wall of the wire rope 4. The upper and lower ends of the sliding tubes 22 are fixedly connected to fixing plates 23 located on the upper and lower surfaces of the float plate 6. The float plate 6 has mounting holes 24 that mate with the sliding tubes 22. The sliding tubes 22 reduce resistance, allowing the float plate 6 to float smoothly up and down, while also preventing wear caused by frequent lifting and lowering.

[0036] In this embodiment, as Figures 1-6 As shown in the figure, the working process of the foundation pit dewatering equipment provided in this embodiment is as follows:

[0037] Step 1: The water level in the dewatering well 1 rises, causing the float 6 to rise, so that the pressure plate 12 contacts the touch switch 11 on the connecting plate 10, and the submersible pump 7 is turned on to pump water.

[0038] Step 2: As the water level drops, the float 6 descends, and the pressure plate 12 contacts the touch switch 11 on the lower connecting plate 9 to shut off the submersible pump 7 and stop pumping water.

[0039] Step 3: When maintenance is required, start the winch 3, and use the winch 3 to wind up the wire rope 4 to raise the bottom components to the wellhead for maintenance.

[0040] Contents not described in detail in this specification are existing technologies known to those skilled in the art. Standard parts used in this invention can all be purchased commercially, and irregularly shaped parts can be custom-made according to the description and drawings. The specific connection methods for each part all employ conventional methods such as bolts, rivets, and welding, which are already mature technologies. The machinery, parts, and equipment all use conventional models from the prior art, and the circuit connections also employ conventional connection methods from the prior art, which will not be detailed here.

[0041] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A foundation pit dewatering device, comprising a dewatering well (1), wherein an installation frame (2) is installed at the wellhead of the dewatering well (1), a winch (3) is installed above the installation frame (2), and two steel wire ropes (4) are installed at the bottom of the winch (3), characterized in that, The bottom ends of the two wire ropes (4) are connected to a counterweight (5). A float (6) is slidably installed between the two wire ropes (4). A submersible pump (7) is installed in the middle of the dewatering well (1) and located below the float (6). The output end of the submersible pump (7) is connected to a water outlet pipe (8). A lower connecting plate (9) and an upper connecting plate (10) located above the lower connecting plate (9) are fixedly connected between the two wire ropes (4). Touch switches (11) are installed on the opposite side walls of the lower connecting plate (9) and the upper connecting plate (10). A pressure plate (12) located between the lower connecting plate (9) and the upper connecting plate (10) and cooperating with the touch switch (11) is fixedly connected above the float (6).

2. The foundation dewatering apparatus of claim 1, wherein, The top of the counterweight (5) is fixedly connected to a lug (13) that is connected to the wire rope (4).

3. The foundation dewatering apparatus of claim 1, wherein, The middle of the float plate (6), the lower connecting plate (9) and the upper connecting plate (10) are all provided with through holes for installing the water outlet pipe (8).

4. The foundation dewatering apparatus of claim 1, wherein, Both ends of the lower connecting plate (9) and the upper connecting plate (10) are fixedly connected to a sleeve (14) sleeved on the outer wall of the wire rope (4). A screw hole (15) is opened on the outer wall of the sleeve (14), and a compression bolt (16) is installed on the inner side of the screw hole (15).

5. The foundation dewatering apparatus of claim 1, wherein, The float (6) comprises two semi-floating plates (601) fixedly connected by fixing bolts (17).

6. The foundation dewatering apparatus of claim 5, wherein, A filter frame (18) is fixedly connected to the bottom of the float (6), and the submersible pump (7) is installed inside the filter frame (18). The filter frame (18) includes two half-frames (181) that are respectively fixedly connected to the bottom of the semi-floating board (601).

7. The foundation dewatering apparatus of claim 5, wherein, The top of each of the two semi-floating plates (601) is fixedly connected to a support rod (19), and the top of the support rod (19) is fixedly connected to a screw (20). The pressure plate (12) is movably installed between the two screws (20), and a nut (21) located on the top of the pressure plate (12) is installed on the outer wall of the screw (20).

8. The foundation dewatering apparatus of claim 5, wherein, A hexagonal countersunk hole (602) is provided on one side of the semi-floating plate (601), and a circular countersunk hole (603) is provided on the other side of the semi-floating plate (601).

9. The foundation dewatering apparatus of claim 1, wherein, Both ends of the float (6) are fitted with sliding tubes (22) that are sleeved on the outer wall of the wire rope (4). The upper and lower ends of the sliding tubes (22) are fixedly connected with fixing plates (23) located on the upper and lower sides of the float (6).

10. A foundation pit dewatering device according to claim 9, characterized in that, The float plate (6) is provided with mounting holes (24) that cooperate with the slide tube (22).

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