Efficient filter for drainage of foundation pit

Abstract

The utility model relates to the technical field of foundation pit drainage, in particular to a high-efficiency filter for foundation pit drainage, which comprises a first filter pipe and a second filter pipe, the outer surface of the first filter pipe is fixedly connected with a corrugated groove, and the lower part of the outer surface of the first filter pipe is provided with a plurality of first permeable holes; a plurality of vertically-through second water permeable holes are formed in the lower end of the first filter pipe, an upper cover is clamped to the upper end of the first filter pipe, a vertically-through penetrating hole is formed in the middle of the upper end of the upper cover, and arc-shaped plates are fixedly connected to the left portion and the right portion of the outer surface of the upper cover; and threaded holes penetrating left and right are formed in the middles of the inner side faces of the two arc-shaped plates correspondingly, and threaded rods are in threaded connection with the interiors of the two threaded holes correspondingly. According to the high-efficiency filter for drainage of the foundation pit, the lower end of the second filter pipe is movably connected with the lower inner wall surface of the first filter pipe through the bearing, so that the situation that a worker consumes time and energy to frequently replace a dense screen is avoided, and the convenience is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of foundation pit drainage, in particular to a high-efficiency filter for foundation pit drainage. Background Art

[0002] There are many ways to dewater the foundation pit, such as well point dewatering, pipe well dewatering, and open ditch drainage. However, for projects with high water levels, the cost of well point dewatering is high, and if pipe well dewatering is used, it is difficult to lower the depth of some parts to 500mm below the foundation pit. Therefore, for projects with pile foundations, self-priming pumps can be used for drainage. This drainage method does not affect the subsequent processes, and there is no need to excavate the foundation pit and then release the water pump to pump water, which affects the subsequent processes.

[0003] A Chinese patent with authorization announcement number CN215329977U discloses a foundation pit drainage filter device, including an outer wide corrugated pipe, a plastic hollow inner pipe movably inserted inside the outer wide corrugated pipe, a filtering device for filtering is provided at the bottom end of the plastic hollow inner pipe, a closing mechanism for closing the plastic hollow inner pipe and the outer wide corrugated pipe is provided at the top end of the plastic hollow inner pipe, and a drainage hose extending to near the bottom side of the plastic hollow inner pipe is movably inserted inside the closing mechanism.

[0004] However, the above-mentioned disclosed solutions have the following shortcomings: 1. In the above-mentioned patent, a fine mesh is set to prevent mud, sand, etc. in the soil from entering the drainage hose, but in actual working applications, fine mud and sand will clog the fine mesh after the device has worked for a long time, and the fine mesh needs to be replaced frequently, which reduces convenience; 2. In the above-mentioned patent, a limiting inner ring is used to prevent the plastic hollow inner tube from slipping out from under the outer wide corrugated tube, but when the self-priming pump is working, the water flow is turbulent, and the limiting inner ring cannot complete the limiting fixation, and may even be swung in the plastic hollow inner tube with the water flow, affecting work efficiency. Utility Model Content

[0005] The main purpose of the utility model is to provide a high-efficiency filter for foundation pit drainage, which can effectively solve the problems in the background technology.

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0007] A high-efficiency filter for foundation pit drainage comprises a first filter tube and a second filter tube, wherein the outer surface of the first filter tube is fixedly connected with a corrugated groove, a plurality of first water-permeable holes are opened at the lower part of the outer surface of the first filter tube, a plurality of second water-permeable holes penetrating up and down are opened at the lower end of the first filter tube, an upper cover is clamped at the upper end of the first filter tube, an interpenetrating hole penetrating up and down is opened at the middle part of the upper end of the upper cover, an arc plate is fixedly connected to the left and right parts of the outer surface of the upper cover, a threaded hole penetrating left and right is opened at the middle part of the inner side surface of the two arc plates, screws are threadedly connected in the two threaded holes, the inner sides of the two screws are fixedly connected with a limiting plate, the outer sides of the two screws are fixedly connected with a handle, a plurality of third water-permeable holes are opened at the lower part of the outer surface of the second filter tube, and a plurality of sponges are fixedly connected to the outer surface of the second filter tube.

[0008] Preferably, the lower end of the second filter tube is movably connected to the lower inner wall surface of the first filter tube through a bearing.

[0009] Preferably, the second filter tube is consistent with the first filter tube in shape but different in size.

[0010] Preferably, anti-slip pads are provided on the inner sides of the two limiting plates.

[0011] Preferably, the two limiting plates are combined into a circle.

[0012] Preferably, the outer side surfaces of a plurality of the sponges are movably connected to the inner wall of the lower tube of the first filter tube.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] 1. In the utility model, by setting a second filter tube, the lower end of the second filter tube is movably connected to the lower inner wall surface of the first filter tube through a bearing. When the self-priming pump sucks water, it drives the underwater water flow to surge. The second filter tube rotates in the first filter tube following the water flow. The sponge on the outer surface rotates and wipes the inner wall surface of the first filter tube to clean the mud and sand in the first water permeable holes and the second water permeable holes on the outer surface of the first filter tube, thereby avoiding the staff from wasting time and energy to frequently replace the dense mesh, and the convenience is improved.

[0015] 2. In the utility model, the inner sides of two arc-shaped plates are fixedly connected to the upper cover, the self-priming pump is connected to the drainage hose, the drainage hose is inserted into the second filter tank through the insertion hole, and the handle is manually rotated to make the threaded rod rotate in the threaded hole to drive the two limit plates to rotate until it is tightly attached to the drainage hose, further completing the limit fixation, so that the stability of the device is further improved to prevent the drainage hose from slipping out in the rushing water flow. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the overall structure of a high-efficiency filter for foundation pit drainage according to the utility model;

[0017] Figure 2 It is a structural schematic diagram of the bottom view of the first filter tank of a high-efficiency filter for foundation pit drainage of the utility model;

[0018] Figure 3 This is a schematic diagram of the structure of the screw connection and splitting of a high-efficiency filter for foundation pit drainage of the utility model;

[0019] Figure 4 The utility model is a schematic diagram of the structure of the second filter tube of the high efficiency filter for foundation pit drainage being disassembled.

[0020] In the figure: 1. first filter tube; 2. corrugated groove; 3. first water permeable hole; 4. second water permeable hole; 5. upper cover; 6. interlaced hole; 7. arc plate; 8. threaded hole; 9. screw; 10. limit plate; 11. handle; 12. second filter tube; 13. third water permeable hole; 14. sponge. DETAILED DESCRIPTION

[0021] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0022] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0023] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0024] See also Figure 1-4 , the utility model provides a technical solution:

[0025] A high-efficiency filter for foundation pit drainage comprises a first filter tube 1 and a second filter tube 12, wherein a corrugated groove 2 is fixedly connected to the outer surface of the first filter tube 1, a plurality of first water permeable holes 3 are opened at the lower part of the outer surface of the first filter tube 1, a plurality of second water permeable holes 4 penetrating up and down are opened at the lower end of the first filter tube 1, an upper cover 5 is clamped at the upper end of the first filter tube 1, a through hole 6 penetrating up and down is opened in the middle of the upper end of the upper cover 5, an arc plate 7 is fixedly connected to the left and right parts of the outer surface of the upper cover 5, a threaded hole 8 penetrating left and right is opened in the middle of the inner side surfaces of the two arc plates 7, screws 9 are threadedly connected in the two threaded holes 8, the inner sides of the two screws 9 are fixedly connected to a limiting plate 10, the outer sides of the two screws 9 are fixedly connected to a handle 11, a plurality of third water permeable holes 13 are opened at the lower part of the outer surface of the second filter tube 12, and a plurality of sponges 14 are fixedly connected to the outer surface of the second filter tube 12.

[0026] In this embodiment, the lower end of the second filter tube 12 is movably connected to the lower inner wall of the first filter tube 1 through a bearing; when the self-priming pump sucks water, the underwater water flow is rapid, and the second filter tube 12 rotates in the first filter tube 1 following the water flow, and the sponge 14 on the outer surface rotates and wipes the inner wall of the first filter tube 1 to clean the mud and sand in the first filter tube 1, thereby avoiding blockage. The second filter tube 12 is consistent with the first filter tube 1 in shape but inconsistent in size; the inner sides of the two limit plates 10 are both provided with anti-slip pads; the two limit plates 10 are combined into a circle, and the two rotating screws 9 are rotated until the two limit plates 10 tightly surround the drainage hose, so that the stability of the device is further improved to avoid the drainage hose slipping out in the rapid water flow; the outer sides of several sponges 14 are movably connected to the inner wall of the lower tube of the first filter tube 1.

[0027] It should be noted that the utility model is a high-efficiency filter for foundation pit drainage. In the specific use process, a foundation pit is first excavated on the foundation pit surface with a higher water level, and then the filter device is buried in the foundation pit, and then the soil is backfilled and compacted to make it flat. Then, the drainage hose is connected to the self-priming pump and placed inside the second filter tube 12 through the insertion hole 6. The water source is sucked into the second filter tube 12 through the first permeable hole 3, the second permeable hole 4 and the third permeable hole 13 to absorb and drain. The lower end of the second filter tube 12 is movably connected to the lower inner wall of the first filter tube 1 through a bearing. When the self-priming pump absorbs water, the underwater water flow is rapid, and the second filter tube 12 rotates in the first filter tube 1 following the water flow. The sponge 14 is rotated and wiped on the inner wall of the first filter tube 1 to clean the mud and sand in the first water permeable hole 3 and the second water permeable hole 4 of the first filter tube 1, thereby avoiding the staff from wasting time and energy to frequently replace the dense mesh, and the convenience is improved. The inner side surfaces of the two arc-shaped plates 7 are fixedly connected to the upper cover 5, and the self-priming pump is connected to the drainage hose. The drainage hose is inserted into the second filter tube 12 through the insertion hole 6. The handle 11 is manually rotated to make the screw 9 rotate in the threaded hole 8 to drive the two limit plates 7 to rotate until it is tightly attached to the drainage hose, thereby further completing the limit fixation, so that the stability of the device is further improved, and the drainage hose can be prevented from slipping out in the rushing water flow.

[0028] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A high efficiency filter for foundation pit drainage, comprising a first filter tube (1) and a second filter tube (12), characterized in that: The first filter tube (1) is fixedly connected to a corrugated groove (2) on its outer surface, a plurality of first water permeable holes (3) are provided at the lower portion of the outer surface of the first filter tube (1), a plurality of second water permeable holes (4) are provided at the lower end of the first filter tube (1), an upper cover (5) is clamped at the upper end of the first filter tube (1), a through hole (6) is provided at the middle portion of the upper end of the upper cover (5), and an arc-shaped plate (7) is fixedly connected to the left and right portions of the outer surface of the upper cover (5), and two The middle part of the inner side surface of the arc-shaped plate (7) is provided with threaded holes (8) passing through to the left and right, the two threaded holes (8) are threadedly connected with screw rods (9), the inner sides of the two screw rods (9) are fixedly connected with a limit plate (10), the outer sides of the two screw rods (9) are fixedly connected with a handle (11), the lower part of the outer surface of the second filter tube (12) is provided with a plurality of third water-permeable holes (13), and the outer surface of the second filter tube (12) is fixedly connected with a plurality of sponges (14).

2. A high efficiency filter for foundation pit drainage according to claim 1, characterized in that: The lower end of the second filter tube (12) is movably connected to the lower inner wall surface of the first filter tube (1) via a bearing.

3. A high efficiency filter for foundation pit drainage according to claim 1, characterized in that: The second filter tube (12) and the first filter tube (1) have the same shape but different sizes.

4. A high efficiency filter for foundation pit drainage according to claim 1, characterized in that: The inner sides of the two limiting plates (10) are both provided with anti-slip pads.

5. The high efficiency filter for foundation pit drainage according to claim 1, characterized in that: The two limiting plates (10) are combined to form a circle.

6. A high efficiency filter for foundation pit drainage according to claim 1, characterized in that: The outer side surfaces of a plurality of the sponges (14) are movably connected to the inner wall of the lower tube of the first filter tube (1).

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