Self-floating water pumping device for foundation pit

Abstract

The application relates to the technical field of water pumping devices, and discloses a self-floating water pumping device for a foundation pit, which comprises a floating structure and a water pumping pump. The water pumping pump has a water inlet and a water outlet, the water inlet is submerged in the water body of a water collecting pit, the water outlet is connected with a water pumping pipe, and the water pumping pipe extends to the outside of the foundation pit. The floating structure comprises a plurality of floating boxes and a hollow mounting rack, and the floating boxes are connected to the mounting rack. The middle part of the mounting rack is concave downward to form a hollow concave area, and the floating boxes have a plurality of balance cavities. The floating boxes have good buoyancy and the balance cavities are designed to ensure that the floating boxes float on the water level. The concave area is arranged on the mounting rack, the water pumping pump is arranged on the concave area, the top of the water pumping pump is lower than the bottom of the floating box, and when the water pumping pump works, the water pumping pump is submerged in the water body and located above the bottom of the water collecting pit. Therefore, the accumulated water in the foundation pit can be pumped out of the foundation pit in time without manual adjustment, and the overall operation is simple.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of water pumping devices, in particular to a self-floating water pumping device for foundation pits. BACKGROUND

[0002] At present, in deep foundation pit engineering, a large amount of rainwater flows into the foundation pit in the rainy season, and the accumulated water in the foundation pit needs to be pumped out of the foundation pit in time. A water pump is usually used to pump out the accumulated water in the foundation pit.

[0003] Referring to Figure 1 In the prior art, in order to pump out the accumulated water in the foundation pit in time, a water collecting pit 101 is usually excavated at a low-lying place at the bottom of the foundation pit 100, a steel pipe tripod 10 is erected above the water collecting pit 101, a hand-operated hoist 20 is installed, and then a water pump 200 is hoisted to a position above the bottom of the water collecting pit 101 by the hand-operated hoist 20, and the position of the water pump 200 is adjusted up and down by manually adjusting the hand-operated hoist 20 to make the water pump 200 immersed in the water level and located above the bottom of the water collecting pit 101. The water pump 200 is started, and the accumulated water in the water collecting pit 101 is pumped out to the top drainage ditch 300 outside the pit. However, in order to ensure the position of the water pump 200 and prevent the water pump 200 from being burned out, the depth of the water pump 200 needs to be repeatedly raised or lowered manually, which consumes a lot of manpower and has the problem of incomplete pumping. SUMMARY

[0004] The present application relates to the technical field of water pumping devices, in particular to a self-floating water pumping device for foundation pits.

[0005] The present application is implemented as follows: a self-floating water pumping device for a foundation pit, comprising a floating structure arranged in a water collecting pit at the bottom of the foundation pit and a water pump arranged on the floating structure; the water pump has a water inlet and a water outlet, the water inlet is immersed in the water body of the water collecting pit, the water outlet is connected with a water pumping pipe, the lower end of the water pumping pipe is connected to the water outlet, and the upper end of the water pumping pipe extends to a top drainage ditch outside the foundation pit from bottom to top.

[0006] The floating structure comprises a plurality of floating boxes and a horizontally arranged and hollow mounting rack, the plurality of floating boxes are arranged along the circumference of the mounting rack and connected to the mounting rack, the middle part of the mounting rack is recessed downward to form a hollow recessed area, the water pump is arranged in the recessed area, and the top of the water pump is lower than the bottom of the floating box.

[0007] The floating box has a submerged bottom submerged in the water body of the sump, which extends upwardly concave to form a plurality of balance cavities, the lower part of the balance cavity is submerged in the water body of the sump, and the upper part of the balance cavity is located above the water body of the sump.

[0008] Optionally, a horizontal connecting beam is connected between the ends of adjacent floating boxes.

[0009] Optionally, a plurality of connecting beams are connected between the ends of adjacent floating boxes, and the plurality of connecting beams are arranged at intervals along the height of the floating box.

[0010] Optionally, the outer periphery of the mounting frame extends outwardly with a horizontal part, and a plurality of floating boxes are connected to the horizontal part.

[0011] Optionally, the horizontal part is connected to the bottom of the floating box.

[0012] Optionally, the bottom of the floating box is flat.

[0013] Optionally, the floating box comprises a metal outer skin box having a closed internal cavity filled with plastic foam.

[0014] Optionally, the width of the concave area gradually decreases in the upward direction, and the water pump is abutted at the bottom of the concave area from top to bottom.

[0015] Optionally, a buffer sleeve having a buffer cavity is connected to the water inlet of the water pump; the inner end of the buffer cavity has an inner connecting end, and the outer end of the buffer cavity has an outer connecting end; the inner connecting end is connected to the water inlet of the water pump, and the outer connecting end is connected to a water inlet pipe.

[0016] A plurality of water pumping holes are provided on the side wall of the water inlet pipe, the plurality of water pumping holes are arranged at intervals along the length direction of the water inlet pipe and spirally along the circumferential direction of the water inlet pipe; a plurality of floating balls are connected to the water inlet pipe and suspended in the water body of the sump, the plurality of floating balls are arranged at intervals along the length direction of the water inlet pipe, and the plurality of floating balls and the water inlet pipe are suspended in the water body of the sump and arranged below the water inlet of the water pump.

[0017] Optionally, the bottom of the buffer cavity extends downwardly to form a filter cavity, a grid is provided between the filter cavity and the buffer cavity, the water inlet pipe communicates with the filter cavity through the outer connecting end, and the buffer cavity communicates with the water inlet through the inner connecting end.

[0018] The water body drawn in by the water inlet pipe enters the filter cavity, returns to the buffer cavity from bottom to top through the filter cavity, and then enters the water inlet of the water pump through the buffer cavity.

[0019] Compared with the prior art, the self-floating water pumping device applied to the foundation pit provided by the application can ensure that the floating box floats on the water level through the good buoyancy of the floating box and the design of the balance cavity, and the recessed area is arranged on the mounting frame, the water pump is arranged on the recessed area, and the top of the water pump is lower than the bottom of the floating box, so that when the water pump works, the water pump is immersed in the water body and located above the bottom of the water collecting pit, without manual adjustment, the accumulated water in the foundation pit can be pumped out of the foundation pit in time, and the overall operation is simple. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 is a construction schematic view of the water pumping device construction applied to the foundation pit in the prior art;

[0021] Figure 2 is a construction schematic view of the self-floating water pumping device construction applied to the foundation pit provided by the application;

[0022] Figure 3 is a top view schematic view of the self-floating water pumping device applied to the foundation pit provided by the application;

[0023] Figure 4 is a front view schematic view of the self-floating water pumping device applied to the foundation pit provided by the application;

[0024] Figure 5 is a front view schematic view of the water pump provided by the application;

[0025] Figure 6 is a cross-sectional view of the buffer sleeve provided by the application. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical scheme and advantages of the application more clear, the application is further described in detail below in combination with the drawings and examples. It should be understood that the specific examples described herein are only used to explain the application and do not limit the application.

[0027] The implementation of the application is described in detail below in combination with specific examples.

[0028] The same or similar reference numerals in the drawings of the embodiments correspond to the same or similar components; in the description of the application, it should be understood that the orientations or positional relationships indicated by the terms "upper", "lower", "left", "right" and the like are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore the terms describing the positional relationship in the drawings are only used for exemplary description, and cannot be understood as a limitation of the patent, for those skilled in the art, the specific meanings of the above terms can be understood according to the specific circumstances.

[0029] Referring to Figures 1-6 the preferred embodiments provided by the present application.

[0030] The self-floating water pumping device for foundation pit provided by the present application comprises a floating structure arranged in a water collecting pit 101 at the bottom of the foundation pit 100 and a water pumping device 200 arranged on the floating structure.

[0031] The floating structure comprises a plurality of floating boxes 220 and a horizontally arranged mounting frame 230 in a hollow shape, the plurality of floating boxes 220 are arranged along the circumference of the mounting frame 230 and connected to the mounting frame 230, and the middle part of the mounting frame 230 is concave downward to form a hollow concave area 231, the water pumping device 200 is arranged in the concave area 231, and the top of the water pumping device 200 is lower than the bottom of the floating box 220.

[0032] The floating box 220 has an immersed bottom submerged in the water body of the water collecting pit 101, the immersed bottom is concave upward to form a plurality of balance cavities 221, the lower part of the balance cavity 221 is submerged in the water body of the water collecting pit 101, and the upper part of the balance cavity 221 is above the water body of the water collecting pit 101.

[0033] The self-floating water pumping device for foundation pit provided by the above-mentioned application can ensure that the floating box 220 floats on the water level through the good buoyancy of the floating box 220 and the design of the balance cavity 221, and the concave area 231 is arranged on the mounting frame 230, the water pumping device 200 is arranged on the concave area 231, and the top of the water pumping device 200 is lower than the bottom of the floating box 220, so that when the water pumping device 200 works, the water pumping device 200 is submerged in the water body and located above the bottom of the water collecting pit 101, without manual adjustment, the accumulated water in the foundation pit can be pumped out of the foundation pit in time, and the overall operation is simple.

[0034] The end parts of the adjacent floating boxes 220 are connected by the horizontally arranged connecting beams 240, so that the deformation of the floating boxes 220 on both sides during hoisting is prevented, and the overall structure connection is more stable.

[0035] The end parts of the adjacent floating boxes 220 are connected by a plurality of connecting beams 240, and the plurality of connecting beams 240 are arranged along the height of the floating box 220, so that the deformation of the floating boxes 220 on both sides during hoisting is prevented, and the plurality of connecting beams 240 can form a more stable stable structure.

[0036] The outer periphery of the mounting frame 230 extends outwardly with a horizontal portion 232, and a plurality of floating boxes 220 are connected to the horizontal portion 232. In this way, the horizontal portion 232 is provided for the installation of the floating boxes 220, and ensures that the floating boxes 220 are fixedly connected to the mounting frame 230.

[0037] The horizontal portion 232 is connected to the bottom of the floating box 220. In this way, the horizontal portion 232 is connected to the floating box 220 in a lifting manner, and since the floating box 220 itself has a downward force, this connection manner can make the connection between the floating box 220 and the mounting frame 230 more stable.

[0038] The bottom of the floating box 220 is flat. In this way, the center of buoyancy and the center of gravity of the floating box 220 are better calculated, and it is ensured that the floating box 220 can float on the water level.

[0039] The floating box 220 includes a metal outer box, which has a closed internal cavity filled with plastic foam. In this way, the outer box itself is hollow, which has a large water displacement volume and a small mass on the water surface, and thus can float on the water surface. Moreover, the internal cavity of the outer box is filled with plastic foam, which has a small density and a very light mass, and thus has a very small burden on the outer box. Moreover, the plastic foam can prevent external water from entering the internal cavity of the outer box when the outer box is damaged, so as to cause the floating box 220 to sink. The plastic foam itself has no gap to absorb water, and thus can block water.

[0040] The width of the recessed area 231 gradually decreases along the upward direction, and the water pump 200 is abutted to the bottom of the recessed area 231 along the upward direction. Since the cross section of the water pump 200 is oval, the recessed area 231 is oval-shaped, which is more suitable for placing the water pump 200.

[0041] The water inlet 201 of the water pump 200 is connected with a buffer sleeve 250, which has a buffer cavity. The inner end of the buffer cavity is provided with an inner connecting end, and the outer end of the buffer cavity is provided with an outer connecting end. The inner connecting end is connected to the water inlet 201 of the water pump 200, and the outer connecting end is connected with a water inlet pipe 260.

[0042] The sidewall of the water inlet pipe 260 is provided with a plurality of water suction holes 261, which are arranged along the length direction of the water inlet pipe 260 and spirally arranged along the circumferential direction of the water inlet pipe 260. A plurality of suspension balls 262 are connected to the water inlet pipe 260, which are suspended in the water body of the water collecting pit 101. The plurality of suspension balls 262 are arranged along the length direction of the water inlet pipe 260, and the water inlet pipe 260 and the plurality of suspension balls 262 are suspended in the water body of the water collecting pit 101, and are arranged lower than the water inlet 201 of the water pump 200.

[0043] In this way, the water inlet pipe 260 can be suspended in the water body, and the water inlet pipe 260 can be ensured to be below the water body and above the bottom of the sump 101, so as to avoid burning the water pump 200 and sucking the silt at the bottom of the sump 101.

[0044] The bottom of the buffer cavity extends downward and is formed with a filter cavity 251, a grid net 252 is arranged between the filter cavity 251 and the buffer cavity, the water inlet pipe 260 is communicated with the filter cavity 251 through an outer connecting end, and the buffer cavity is communicated with the water inlet 201 through an inner connecting end.

[0045] The water sucked by the water inlet pipe 260 enters the filter cavity 251 and returns to the buffer cavity from bottom to top, and then enters the water inlet 201 of the water pump 200.

[0046] The filter cavity 251 can be provided to leave part of the large particles of the substances in the filter cavity 251, and the grid net 252 can intercept part of the large particles of the substances, so that the filter cavity 251 can play a filtering role.

[0047] The above only describes the preferred embodiments of the present application and is not used to limit the present application, and any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A self-floating water pumping device for use in a foundation pit, characterized by, The application relates to a floating structure arranged in a water collecting pit at the bottom of a foundation pit and a water pump arranged on the floating structure; the water pump has a water inlet and a water outlet, the water inlet is immersed in the water body of the water collecting pit, the water outlet is connected with a water pumping pipe, the lower end of the water pumping pipe is connected with the water outlet, and the upper end of the water pumping pipe extends upwards from the lower end to a top drainage ditch outside the foundation pit. The floating structure comprises a plurality of floating boxes and a horizontally-arranged and hollow mounting rack, the floating boxes are arranged in a circumferential direction of the mounting rack and connected with the mounting rack, the middle part of the mounting rack is concave downwards to form a hollow concave area, the water pump is arranged in the concave area, and the top of the water pump is lower than the bottom of the floating box. The floating box has an immersed bottom immersed in the water body of the water collecting pit, the immersed bottom is concave upwards to form a plurality of balance cavities, the lower part of the balance cavity is immersed in the water body of the water collecting pit, and the upper part of the balance cavity is above the water body of the water collecting pit. The water inlet of the water pump is connected with a buffer sleeve, the buffer sleeve has a buffer cavity, the inner end of the buffer cavity has an inner connecting end, the outer end of the buffer cavity has an outer connecting end, the inner connecting end is connected with the water inlet of the water pump, and the outer connecting end is connected with a water inlet pipe. A plurality of water pumping holes are arranged on the side wall of the water inlet pipe in a length direction of the water inlet pipe and in a circumferential direction of the water inlet pipe, a plurality of suspension balls are connected with the water inlet pipe and suspended in the water body of the water collecting pit, the suspension balls are arranged in the length direction of the water inlet pipe, the water inlet pipe and the suspension balls are suspended in the water body of the water collecting pit and arranged below the water inlet of the water pump. The bottom of the buffer cavity extends downwards to form a filter cavity, a grating net is arranged between the filter cavity and the buffer cavity, the water inlet pipe is in communication with the filter cavity through the outer connecting end, and the buffer cavity is in communication with the water inlet through the inner connecting end. The water body pumped by the water inlet pipe enters the filter cavity, returns to the buffer cavity from the lower part to the upper part of the filter cavity, and then enters the water inlet of the water pump.

2. The self-floating water pumping device for foundation pit according to claim 1, wherein, The end parts between adjacent floating boxes are connected with horizontally-arranged connecting beams.

3. The self-floating water pumping device for foundation pit according to claim 2, wherein, The end parts between adjacent floating boxes are connected with a plurality of connecting beams arranged in a height direction of the floating box.

4. The self-floating water pumping device for foundation pit according to claim 1, wherein The outer periphery of the mounting rack extends outwards to form a horizontal part, and the floating boxes are connected with the horizontal part.

5. The self-floating water pumping device for foundation pit according to claim 4, wherein, The horizontal part is connected with the bottom of the floating box.

6. The self-floating water pumping device for foundation pit according to claim 1, wherein The bottom of the floating box is flat.

7. The self-floating water pumping device for foundation pit according to claim 1, wherein The floating box comprises a metal outer skin box with a closed internal cavity filled with plastic foam.

8. The self-floating water pumping device for foundation pit according to claim 1, wherein, The width of the concave area gradually decreases in a top-to-bottom direction, and the water pump abuts against the bottom of the concave area from top to bottom.

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