Water pump for drainage of foundation pit

Abstract

The utility model discloses a water pump for drainage of a foundation pit, and belongs to the technical field of water pumps. The device comprises a water suction pump, the water inlet end of the water suction pump is fixedly connected with a water inlet pipe, the end, away from the water suction pump, of the water inlet pipe is connected with a protection mechanism, the protection mechanism comprises an annular air bag and an annular installation frame, and the top and the bottom of the annular air bag are provided with an upper fixing ring and a lower fixing ring respectively. Through the structural design of the annular air bag, the top cover, the annular installation frame and the filter screen, after the water inlet pipe and the protection mechanism are assembled, the protection mechanism is placed in water of a foundation pit, normal water pumping operation can be guaranteed, meanwhile, the protection mechanism always floats on the water surface, the water inlet pipe is effectively prevented from making direct contact with the bottom of the foundation pit, and the water pumping efficiency is improved. Therefore, the possibility that impurities such as gravels and silt are sucked into the water inlet pipe is greatly reduced, meanwhile, the problem of blockage caused by the fact that the filter screen sucks the impurities such as the gravels is solved, and continuous and efficient operation of the drainage system is ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to water pump technology field, concretely is a water pump for foundation pit drainage. BACKGROUND

[0002] Foundation pit dewatering refers to when excavating foundation pit, underground water level is higher than excavation bottom surface, underground water will continuously seep into pit, in order to ensure that foundation pit can be constructed under dry conditions, prevent side slope instability, foundation quicksand, pit bottom uplift, pit bottom piping and foundation bearing capacity drop and do dewatering work, in order to effectively discharge the water source seeped from the bottom of foundation pit during foundation pit construction, effectively guarantee the efficiency of foundation pit excavation, need to use water pump to discharge water in foundation pit;

[0003] Traditional water pump extracts accumulated water, usually directly puts the water inlet pipe connected with water pump into foundation pit, the water inlet pipe will contact with the bottom of foundation pit, in use, will suck the gravel on the ground of foundation pit into drainage pipeline, is easy to cause pipeline blockage, or water pump impeller abrasion, makes the service life of water pump decline, therefore, aiming at above situation, proposes a water pump for foundation pit drainage. UTILITY MODEL CONTENTS

[0004] The utility model discloses a water pump for foundation pit drainage, through the structure design of annular air bag, top cap, annular mounting bracket and filter screen, protection mechanism always floats on water surface, effectively avoid that water inlet pipe directly contacts with the bottom of foundation pit, thereby greatly reduce the possibility that gravel, silt and other impurities are sucked into water inlet pipe, solve the problem that gravel on the ground of foundation pit is sucked into drainage pipeline in use of existing device, is easy to cause pipeline blockage, or water pump impeller abrasion.

[0005] The utility model is realized through the following technical schemes:

[0006] The utility model discloses a water pump for foundation pit drainage, including water pump, the water inlet end fixed connection of water pump has water inlet pipe, and the one end of water inlet pipe away from water pump is connected with protection mechanism, and protection mechanism includes annular air bag and annular mounting bracket, and the top and bottom of annular air bag are provided with upper fixed ring and lower fixed ring respectively, and the inner wall of upper fixed ring and lower fixed ring all has internal thread, and the upper fixed ring is screwed with top cap, and the top cap is penetrated and is set with screw hole, and the screw hole is matched with water inlet pipe, and the annular mounting bracket is fixed with filter screen, and the outer wall of annular mounting bracket has second external thread, and the annular mounting bracket is screwed with the internal thread of lower fixed ring inner wall through second external thread.

[0007] Further, the outer wall of the water inlet pipe is provided with a limiting ring, and the limiting ring has two, the radius of the two limiting rings is less than the radius of the screw hole.

[0008] Further, the water inlet pipe is gap-fitted with a connecting sleeve on the outer wall between the two limiting rings, the outer wall of the connecting sleeve is provided with a first external thread, and the outer wall of the connecting sleeve is provided with a stop ring.

[0009] Further, when the water inlet pipe is fitted on the threaded hole, the first external thread is threadedly fitted with the threaded hole, and the stop ring is attached to the top of the top cover.

[0010] Further, the top of the top cover has a circular handle, and the circular handle has two.

[0011] Further, the bottom of the lower fixed ring is annularly arranged with a plurality of protruding rods.

[0012] The utility model has the following beneficial effects:

[0013] The utility model discloses a water inlet pipe and protection mechanism, which are characterized by the following: the protection mechanism comprises a top cover, a filter screen, a limiting ring, a connecting sleeve, a first external thread and a stop ring.

[0014] The utility model discloses a water inlet pipe and protection mechanism, which are characterized by the following: the protection mechanism comprises a top cover, a filter screen, a limiting ring, a connecting sleeve, a first external thread and a stop ring.

[0015] The utility model discloses a water inlet pipe and protection mechanism, which are characterized by the following: the protection mechanism comprises a top cover, a filter screen, a limiting ring, a connecting sleeve, a first external thread and a stop ring.

[0016] Of course, any product implementing the utility model does not necessarily need to achieve all the advantages mentioned above. DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the water pump.

[0018] Figure 2 It is a top structure schematic diagram of the protection mechanism.

[0019] Figure 3 It is a bottom structure schematic diagram of the protection mechanism.

[0020] Figure 4 It is a structure schematic diagram of the connecting sleeve.

[0021] In the figure: 1, water pump; 101, water inlet pipe; 1010, limiting ring; 2, protection mechanism; 201, annular air bag; 202, upper fixed ring; 203, lower fixed ring; 2030, convex rod; 204, top cover; 2040, screw hole; 205, connecting sleeve; 2050, first external thread; 2051, stop ring; 206, annular mounting frame; 207, filter screen. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0023] Please refer to Figures 1-4 The utility model provides a kind of technical scheme: a water pumping machine for foundation pit drainage, including water pump 1, water pump 1 is fixed on rack, the water inlet end of water pump 1 is fixedly connected with water inlet pipe 101, the end of water inlet pipe 101 away from water pump 1 is connected with protection mechanism 2, protection mechanism 2 includes annular air bag 201 and annular mounting frame 206, the top and bottom of annular air bag 201 are provided with upper fixed ring 202 and lower fixed ring 203 respectively, the inner wall of upper fixed ring 202 and lower fixed ring 203 is all with internal thread, upper fixed ring 202 is screwed with top cover 204, top cover 204 is penetrated and is equipped with screw hole 2040, screw hole 2040 is cooperated with water inlet pipe 101.

[0024] Wherein, annular air bag 201 is made of rubber material, annular air bag 201 has inlet pipe, inlet pipe is screwed with sealing cap.

[0025] Correspondingly, in use, the air of annular air bag 201 can guarantee that the lower half of protection mechanism 2 is immersed below water surface, and the upper half is exposed above water surface, so that water inlet pipe 101 is always below water surface, and normal water pumping operation can be carried out.

[0026] Wherein, the top of top cover 204 has circular handle, circular handle has two, by setting handle, top cover 204 can be conveniently removed from upper fixed ring 202.

[0027] Wherein, upper fixed ring 202 and lower fixed ring 203 are made of plastic material, and the inside of upper fixed ring 202 and lower fixed ring 203 is preferably hollow structure.

[0028] The filter screen 207 is fixed on the annular mounting frame 206, and the outer wall of the annular mounting frame 206 is provided with a second external thread. The annular mounting frame 206 is screwed with the internal thread on the inner wall of the lower fixing ring 203.

[0029] The bottom of the lower fixing ring 203 is provided with a plurality of protruding rods 2030 arranged in an annular array. The protruding rods 2030 can be in contact with the bottom of the foundation pit, so that the filter screen 207 always has a gap with the bottom of the foundation pit, preventing impurities from blocking the filter screen 207.

[0030] The annular mounting frame 206 is also made of plastic material, and the filter screen 207 completely covers the annular mounting frame 206. The filter screen 207 can be woven by metal wires, and the bottom of the filter screen 207 is provided with a circular handle for facilitating disassembly of the annular mounting frame 206.

[0031] The outer wall of the water inlet pipe 101 is provided with two limiting rings 1010, and the radii of the two limiting rings 1010 are smaller than the radius of the screw hole 2040, so that the connecting sleeve 205 can be smoothly fitted on the screw hole 2040 while being limited.

[0032] Further, the connecting sleeve 205 is gap-fitted on the outer wall of the water inlet pipe 101 between the two limiting rings 1010. The outer wall of the connecting sleeve 205 is provided with a first external thread 2050, and the outer wall of the connecting sleeve 205 is provided with a stop ring 2051.

[0033] Further, when the water inlet pipe 101 is fitted on the screw hole 2040, the first external thread 2050 is screwed with the screw hole 2040, and the stop ring 2051 is attached to the top of the top cover 204. The water inlet pipe 101 extends downward after being inserted into the screw hole 2040, and has a certain gap with the filter screen 207.

[0034] The connecting sleeve 205 is a plastic column with a circular shape.

[0035] In the embodiment, when in use, the water pump 1 is first carried to a designated position, then the water inlet pipe 101 is connected with the water pump 1, air is injected into the annular air bag 201, then the connecting sleeve 205 is positioned by cooperation of the first external thread 2050 and the screw hole 2040, and then the water inlet pipe 101 inserted into the screw hole 2040 is positioned, the annular air bag 201 is placed into the foundation pit, water in the foundation pit enters the annular channel of the annular air bag 201 through the filter screen 207, and then the water inlet pipe 101 is below the water surface, the power supply of the water pump 1 is connected and the switch of the water pump 1 is turned on to work, the water pump 1 works to discharge water in the foundation pit through the water inlet pipe 101, in the process, the filter screen 207 can prevent gravel and other impurities from interfering with the normal work of the water pump 1, and meanwhile, since the protection mechanism 2 floats on the water surface, the water inlet pipe 101 is not directly in contact with the bottom of the foundation pit, and the clogging of the filter screen 207 is reduced.

[0036] The above disclosed preferred embodiments of the utility model are only used for helping to set forth the utility model. The preferred embodiments do not describe all the details and limit the utility model to the specific embodiments. Apparently, according to the content of the specification, many modifications and changes can be made. The specification selects and specifically describes these embodiments in order to better explain the principle and practical application of the utility model, so that the person skilled in the art can well understand and utilize the utility model. The utility model is limited by the claims and the whole scope and equivalents thereof.

Claims

1. A water pumping machine for foundation pit drainage, comprising a water pumping machine (1), a water inlet pipe (101) is fixedly connected to the water inlet end of the water pumping machine (1), and a protection mechanism (2) is connected to the end of the water inlet pipe (101) away from the water pumping machine (1), characterized in that, The protection mechanism (2) comprises: An annular air bag (201) is provided with an upper fixing ring (202) and a lower fixing ring (203) at the top and bottom respectively, the inner walls of the upper fixing ring (202) and the lower fixing ring (203) are provided with internal threads, a top cover (204) is threadedly connected to the upper fixing ring (202), a threaded hole (2040) is formed through the top cover (204), and a water inlet pipe (101) is connected to the threaded hole (2040); An annular mounting rack (206) is fixedly connected with a filter screen (207), the outer wall of the annular mounting rack (206) is provided with a second external thread, and the annular mounting rack (206) is threadedly connected with the internal thread of the inner wall of the lower fixing ring (203) through the second external thread.

2. The dewatering machine for a foundation pit according to claim 1, characterized by The outer wall of the water inlet pipe (101) is provided with a limiting ring (1010), and there are two limiting rings (1010), the radii of the two limiting rings (1010) are smaller than the radius of the threaded hole (2040).

3. The water pump according to claim 2, wherein The outer wall of the water inlet pipe (101) is provided with a connecting sleeve (205) between the two limiting rings (1010), the outer wall of the connecting sleeve (205) is provided with a first external thread (2050), and the outer wall of the connecting sleeve (205) is provided with a blocking ring (2051).

4. The water pump according to claim 3, wherein When the water inlet pipe (101) is connected to the threaded hole (2040), the first external thread (2050) is threadedly connected with the threaded hole (2040), and the blocking ring (2051) is in contact with the top of the top cover (204).

5. The pit drainage water pump according to claim 4, wherein The top of the top cover (204) is provided with a circular handle, and the circular handle has two.

6. The water pump according to claim 1, wherein The bottom of the lower fixing ring (203) is provided with a convex rod (2030) in an annular array.

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