Multi-inner-pit foundation pit drainage equipment

Abstract

The utility model discloses multi-inner-pit foundation pit drainage equipment, which relates to the technical field of building construction and comprises a water suction pump, a first drainage pipeline and a second drainage pipeline, the first drainage pipeline and the second drainage pipeline are respectively connected to two ends of the water suction pump, and the other end of the second drainage pipeline extends to the bottom of a water collecting well. The first drainage pipeline fixedly communicates with a plurality of connecting branch pipes at equal intervals in the length direction of the first drainage pipeline, third water pumping pipes are detachably installed at the ends, away from the first drainage pipeline, of the connecting branch pipes, the corresponding number of third water pumping pipes can be selectively connected according to the specific number of the foundation pits, drainage can be conveniently conducted on the multiple foundation pits at the same time, and the drainage efficiency is improved; and a self-sealing water pumping head is installed at the end, away from the first water drainage pipeline, of the third water pumping pipe, during water drainage, when accumulated water in the foundation pit where the self-sealing water pumping head is located is drained to the preset surplus, the third water pumping pipe where the self-sealing water pumping head is located is sealed by the self-sealing water pumping head, and smooth water drainage of other foundation pits is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of building construction technology, and in particular to a drainage device for multi-pit foundation pits. Background Technology

[0002] Excavation pit drainage is a major challenge during rainy season construction. Prolonged water accumulation in the pit not only alters the soil properties of the pit walls, significantly reducing the soil's resistance to sliding and severely affecting the pit's stability, but can also lead to major production safety accidents. Furthermore, prolonged water immersion in already poured foundations can impair the development of concrete strength, posing a potential safety hazard to the building's quality.

[0003] Since traditional continuous pumping not only tests the electrical equipment's ability to work safely in rainy and humid environments, but also poses a burden on energy consumption, the siphon phenomenon is generally used for continuous drainage of the foundation pit.

[0004] For example, patent publication number CN207974129U provides an energy-saving drainage system for foundation pits, including a sump, a suction pipe, a vacuum pump, a siphon controller, and an outlet pipe. The sump is located inside the foundation pit. One end of the suction pipe is located inside the sump, and the other end is connected to the vacuum pump located outside the foundation pit. One end of the outlet pipe is connected to the vacuum pump, and the other end is located inside a fire well. A siphon controller is installed on the outlet pipe. Speed ​​sensors are installed on both sides of the siphon controller. An electrically controlled stop valve is also installed on the part of the outlet pipe along the water outlet direction. The electrically controlled stop valve is located outside the speed sensors outside the siphon controller. When the vacuum pump is turned on to pump water, when the water head on one side of the fire well is lower than the water head inside the foundation pit, the water can spontaneously flow into the fire well through the siphon phenomenon. At this time, the vacuum pump is turned off, and the pumping process will continue.

[0005] Based on the above search and analysis of existing technologies, it has been found that existing foundation pit drainage devices similar to those disclosed above generally require the installation of multiple sets of such drainage equipment when draining multiple foundation pits, which is cumbersome to operate. Therefore, a multi-pit foundation pit drainage device is proposed to improve the above-mentioned problems. Utility Model Content

[0006] The purpose of this application is to provide a drainage device for multiple internal pit foundations to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this application provides the following technical solution: a multi-pit foundation drainage device, including a water pump and a first drainage pipe and a second drainage pipe respectively connected to both ends of the water pump. The other end of the second drainage pipe extends to the bottom of the sump. The first drainage pipe is fixedly connected to multiple connecting branch pipes at equal intervals along its length. A third water pumping pipe is detachably installed at the end of the connecting branch pipe away from the first drainage pipe.

[0008] The end of the third pumping pipe furthest from the first drainage pipe is equipped with a self-sealing pumping head. The self-sealing pumping head is located at the bottom of the pit. When the water in the pit where the self-sealing pumping head is located is drained to the preset remaining amount, the third pumping pipe where the self-sealing pumping head is located is sealed by the self-sealing pumping head.

[0009] As a further supplement to this solution, a connecting sleeve is rotatably installed at the end of the third pumping pipe away from the self-sealing pumping head, and the connecting sleeve is threadedly connected to the connecting branch pipe.

[0010] As a further supplement to this solution, the end of the connecting branch pipe furthest from the first drainage pipe is threaded with a sealing cap.

[0011] As a further supplement to this scheme, a bend is fixed to the end of the third pumping pipe away from the connecting sleeve, and a fourth pumping pipe is fixed horizontally to the other end of the bend. A self-sealing pumping head is vertically fixed and connected to the end of the fourth pumping pipe.

[0012] As a further supplement to this solution, the self-sealing pump head includes a filter cylinder, a float, a counterweight sealing block, and a guide slide bar;

[0013] The filter cylinder is fixed to the fourth water pumping pipe, and the bottom end of the filter cylinder is provided with a through hole that connects to the fourth water pumping pipe. The guide slide rod is vertically fixed to the inner side of the filter cylinder, the float is slidably sleeved on the outer side of the guide slide rod, and the counterweight sealing block is fixed to the bottom end of the float and is adapted to the bottom through hole of the filter cylinder.

[0014] As a further supplement to this plan, a fixing plate is installed on the side end of the fourth pumping pipe, and the fixing plate is fixed to the bottom of the foundation pit by ground nails.

[0015] In summary, the technical effects and advantages of this utility model are as follows:

[0016] 1. In this utility model, a corresponding number of third pumping pipes can be connected according to the specific number of foundation pits. The ends of the multiple third pumping pipes away from the first drainage pipe are extended to the inner bottom of the multiple foundation pits. The water pump, in conjunction with the third pumping pipes, the first drainage pipe, and the second drainage pipe, pumps the water in the foundation pits into the collection well. After the water pumping is stable, the pumping pump is turned off. Then, the water in the foundation pits is continuously pumped into the collection well by the natural siphon phenomenon. This makes it convenient to drain multiple foundation pits at the same time, which not only improves the drainage efficiency but also reduces the labor intensity of personnel.

[0017] 2. In this utility model, a self-sealing pump head is installed at the end of the third pumping pipe away from the first drainage pipe. The self-sealing pump head is located at the bottom of the pit. When the water in the pit where the self-sealing pump head is located is discharged to the preset remaining amount, the third pumping pipe where the self-sealing pump head is located is sealed by the self-sealing pump head, ensuring smooth drainage of other pits. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the planar structure in this embodiment;

[0020] Figure 2 This is a schematic diagram of the three-dimensional structure in this embodiment;

[0021] Figure 3 This is a cross-sectional view of the self-sealing pump head in this embodiment.

[0022] In the diagram: 1. Water pump; 2. First drainage pipe; 201. Connecting branch pipe; 202. Sealing cap; 3. Second drainage pipe; 4. Fixing plate; 5. Third pumping pipe; 501. Connecting sleeve; 502. Bend; 503. Fourth pumping pipe; 6. Self-sealing pumping head; 61. Filter cylinder; 62. Float; 63. Counterweight sealing block; 64. Guide slide rod. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Example: Reference Figures 1-3 The multi-pit foundation drainage device shown includes a water pump 1 and a first drainage pipe 2 and a second drainage pipe 3 respectively connected to both ends of the water pump 1. The other end of the second drainage pipe 3 extends to the bottom of the sump, and the bottom surface of the sump is lower than the bottom surface of the foundation pit. The first drainage pipe 2 is fixedly connected to multiple connecting branch pipes 201 at equal intervals along its length. A third pumping pipe 5 is detachably installed at the end of the connecting branch pipe 201 away from the first drainage pipe 2.

[0025] Depending on the number of foundation pits, a corresponding number of third pumping pipes 5 can be connected. The ends of the multiple third pumping pipes 5 that are away from the first drainage pipe 2 are extended to the inner bottom of the multiple foundation pits. The water pump 1, together with the third pumping pipes 5, the first drainage pipe 2 and the second drainage pipe 3, is used to pump the water in the foundation pits into the collection well. After the water pumping is stable, the water pump 1 is turned off. Then, the water in the foundation pits can be continuously pumped into the collection well by the natural siphon phenomenon.

[0026] Considering that the amount of water accumulated in each pit and the drainage speed may be different, a self-sealing pump head 6 is installed at the end of the third pumping pipe 5 away from the first drainage pipe 2. The self-sealing pump head 6 is located at the bottom of the pit. When the water in the pit where the self-sealing pump head 6 is located is drained to the preset remaining amount, the third pumping pipe 5 where the self-sealing pump head 6 is located is sealed by the self-sealing pump head 6.

[0027] The end of the third pumping pipe 5 away from the self-sealing pumping head 6 is fitted with a connecting sleeve 501, which is threadedly connected to the connecting branch pipe 201 to facilitate the disassembly and assembly of the third pumping pipe 5. At the same time, the end of the connecting branch pipe 201 away from the first drainage pipe 2 is threadedly connected with a sealing cap 202 to facilitate the sealing of the connecting branch pipe 201.

[0028] To prevent excessive bending of the third water pipe 5 from causing drainage problems, a bend 502 is fixed to the end of the third water pipe 5 away from the connecting sleeve 501. The other end of the bend 502 is horizontally fixed to the fourth water pipe 503, and the self-sealing water pump head 6 is vertically fixed to the end of the fourth water pipe 503.

[0029] Regarding the self-sealing water pump head 6, specifically, the self-sealing water pump head 6 includes a filter cylinder 61 (filter holes not shown in the figure), a float 62, a counterweight sealing block 63, and a guide slide rod 64. The filter cylinder 61 is fixedly installed with the fourth water pumping pipe 503, and the bottom end of the filter cylinder 61 is provided with a through hole that communicates with the fourth water pumping pipe 503. The guide slide rod 64 is vertically fixed to the inner side of the filter cylinder 61, the float 62 is slidably sleeved on the outer side of the guide slide rod 64, and the counterweight sealing block 63 is fixed to the bottom end of the float 62 and is adapted to the bottom through hole of the filter cylinder 61.

[0030] When there is a lot of water in the foundation pit, the float 62 floats at the top of the filter cylinder 61 with the counterweight sealing block 63 under its own buoyancy. The water can pass smoothly through the through hole at the bottom of the filter cylinder 61 and be pumped into the collection well through the fourth pumping pipe 503, the third pumping pipe 5, the first drainage pipe 2 and the second drainage pipe 3 in sequence. When the water level in the foundation pit drops to the position close to the through hole at the bottom of the filter cylinder 61, the float 62 loses its buoyancy and the counterweight sealing block 63 moves down to seal the through hole at the bottom of the filter cylinder 61. The negative pressure inside the fourth pumping pipe 503 is used to seal the fourth pumping pipe 503.

[0031] In order to ensure that the self-sealing pump head 6 is placed stably and vertically, a fixing plate 4 is installed on the side end of the fourth pump pipe 503. The fixing plate 4 is fixed to the bottom of the pit by ground nails.

[0032] The working principle of this utility model is as follows: Select and connect a corresponding number of third pumping pipes 5 according to the specific number of foundation pits. Extend the ends of the multiple third pumping pipes 5 away from the first drainage pipe 2 to the inner bottom of the multiple foundation pits. Fix them to the bottom of the foundation pits with fixing plates 4 and ground nails. Use the pumping pump 1 in conjunction with the third pumping pipes 5, the first drainage pipe 2 and the second drainage pipe 3 to pump the water in the foundation pits to the collection well. After the water pumping is stable, turn off the pumping pump 1. Then, the water in the foundation pits can be continuously pumped to the collection well by natural siphon phenomenon.

[0033] When there is a lot of water in the foundation pit, the float 62 floats at the top of the filter cylinder 61 with the counterweight sealing block 63 under its own buoyancy. The water can pass smoothly through the through hole at the bottom of the filter cylinder 61 and be pumped into the collection well through the fourth pumping pipe 503, the third pumping pipe 5, the first drainage pipe 2 and the second drainage pipe 3 in sequence. When the water level in the foundation pit drops to the position close to the through hole at the bottom of the filter cylinder 61, the float 62 loses its buoyancy and the counterweight sealing block 63 moves down to seal the through hole at the bottom of the filter cylinder 61. The negative pressure inside the fourth pumping pipe 503 is used to seal the fourth pumping pipe 503.

[0034] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model 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 utility model should be included within the protection scope of the present utility model.

Claims

1. A multi-pit foundation drainage device, comprising a water pump (1) and a first drainage pipe (2) and a second drainage pipe (3) respectively connected to both ends of the water pump (1), wherein the other end of the second drainage pipe (3) extends to the bottom of a sump, characterized in that, The first drainage pipe (2) is fixedly connected to multiple connecting branch pipes (201) at equal intervals along its length direction. The end of the connecting branch pipe (201) away from the first drainage pipe (2) is detachably installed with a third water pumping pipe (5). The third pumping pipe (5) is equipped with a self-sealing pumping head (6) at the end away from the first drainage pipe (2). The self-sealing pumping head (6) is located at the bottom of the pit. When the water in the pit where the self-sealing pumping head (6) is located is drained to a preset remaining amount, the third pumping pipe (5) where the self-sealing pumping head (6) is located is sealed by the self-sealing pumping head (6).

2. The multi-internal pit drainage device according to claim 1, characterized in that: The end of the third pumping pipe (5) away from the self-sealing pumping head (6) is rotatably fitted with a connecting sleeve (501), and the connecting sleeve (501) is threadedly connected to the connecting branch pipe (201).

3. The multi-internal pit drainage device according to claim 2, characterized in that: The end of the connecting branch pipe (201) away from the first drainage pipe (2) is threaded with a sealing cap (202).

4. A multi-pit foundation drainage device according to claim 2, characterized in that: The end of the third pumping pipe (5) away from the connecting sleeve (501) is fixed with a bend (502), and the other end of the bend (502) is horizontally fixed with a fourth pumping pipe (503). The self-sealing pumping head (6) is vertically fixed and connected to the end of the fourth pumping pipe (503).

5. A multi-pit foundation drainage device according to claim 4, characterized in that: The self-sealing pump head (6) includes a filter cylinder (61), a float (62), a counterweight sealing block (63), and a guide slide rod (64); The filter cylinder (61) is fixedly connected to the fourth water pumping pipe (503), and the bottom end of the filter cylinder (61) is provided with a through hole that communicates with the fourth water pumping pipe (503). The guide slide rod (64) is vertically fixed to the inner side of the filter cylinder (61), the float (62) is slidably sleeved on the outer side of the guide slide rod (64), and the counterweight sealing block (63) is fixed to the bottom end of the float (62) and is adapted to the bottom through hole of the filter cylinder (61).

6. A multi-pit foundation drainage device according to claim 4, characterized in that: The fourth pumping pipe (503) is equipped with a fixing plate (4) on its side end, and the fixing plate (4) is fixed to the bottom of the pit by ground nails.

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