Efficient filtering device for foundation pit dewatering in groundwater-rich section

Abstract

The utility model discloses a kind of underground water rich section foundation pit dewatering efficient filter devices, specifically related to foundation pit dewatering field, including well point pipe, one end of well point pipe is fixedly connected with filter tube, the end of filter tube away from well point pipe is fixedly connected with cast iron head, and the outer wall of filter tube is fixedly installed with filter screen;Installation component, installation component is used to assist staff to bury and remove filter device, and installation component is connected with well point pipe, the utility model is set by spiral thread, first threaded sleeve, connecting rod, taper piece and annular airbag, can assist staff to install and fix filter device, so that filter device is centrally suspended and set in the inside of well point hole position.

Description

Technical Field

[0001] This utility model relates to the field of foundation pit dewatering technology, and more specifically, to a high-efficiency filtration device for foundation pit dewatering in areas with abundant groundwater. Background Technology

[0002] Dewatering of foundation pits refers to the dewatering work carried out when the groundwater level is higher than the bottom of the excavation pit during excavation, and groundwater will continuously seep into the pit. In order to ensure that the foundation pit can be constructed under dry conditions, and to prevent slope instability, quicksand in the foundation, pit bottom heave, piping at the bottom of the pit, and a decrease in the bearing capacity of the foundation, wellpoint dewatering is a type of foundation pit dewatering. This method involves burying filter pipes around the foundation pit and using pumping equipment to continuously extract groundwater, so as to lower the groundwater level below the bottom of the foundation pit and ensure that the foundation pit is dry.

[0003] Existing technology requires workers to insert the filter pipe centered into the well point borehole during installation, and then fill the space between the filter pipe and the well point borehole with clean coarse sand as a filter layer to prevent soil collapse and clogging of the filter screen. However, the well point borehole is 0.5 to 1 meter deeper than the bottom of the filter pipe during installation. This necessitates workers suspending the filter pipe in the center of the well point borehole until the coarse sand is filled and provides support and filtration. This installation method is not only time-consuming and labor-intensive, but also requires multiple workers to complete the installation. Therefore, designing a highly efficient filtration device for dewatering in foundation pits in areas with abundant groundwater is a problem that needs to be solved. Utility Model Content

[0004] To overcome the aforementioned deficiencies of the prior art, embodiments of this utility model provide a high-efficiency filtration device for dewatering foundation pits in areas with abundant groundwater. Through the arrangement of spiral threads, a first threaded sleeve, a connecting rod, a conical component, and an annular air bladder, the device can be installed and fixed by workers, allowing it to be centrally suspended inside the well point borehole, thereby solving the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a high-efficiency filtration device for dewatering foundation pits in areas with abundant groundwater, comprising a wellpoint pipe, a filter pipe fixedly connected to one end of the wellpoint pipe, a cast iron head fixedly connected to the end of the filter pipe away from the wellpoint pipe, and a filter screen fixedly installed on the outer wall of the filter pipe; and an installation component, which assists workers in burying and dismantling the filtration device, and is connected to the wellpoint pipe.

[0006] In a preferred embodiment, the mounting assembly includes a spiral pattern formed on the outer wall of the wellpoint tube, the outer wall of the spiral pattern being threadedly connected to a first threaded sleeve, a connecting rod being fixedly connected to the outer wall of the first threaded sleeve near the filter tube, and a tapered member being fixedly connected to the end of the connecting rod away from the first threaded sleeve.

[0007] In a preferred embodiment, the outer wall of the conical member is fixedly connected to a first bending member and a second bending member, and an annular airbag is provided between the first bending member and the second bending member, the annular airbag being sleeved on the outer wall of the conical member.

[0008] In a preferred embodiment, the outer wall of the first threaded sleeve is threadedly connected to a second threaded sleeve, and a connecting ring is fixedly connected to the end of the second threaded sleeve away from the connecting rod. A sealing element is fixedly connected to the outer wall of the connecting ring.

[0009] In a preferred embodiment, the sealing element is disposed inside the conical element, and a sealing gasket is disposed between the conical element and the sealing element, the sealing gasket being fixedly installed on the outer wall of the sealing element.

[0010] In a preferred embodiment, an arc-shaped locking block is slidably connected inside the connecting ring. The arc-shaped locking block has anti-slip texture on the side near the well point pipe. An arc-shaped inclined groove is formed inside the arc-shaped locking block. A pull rod is inserted into the connecting ring and the arc-shaped inclined groove. The end of the pull rod away from the arc-shaped inclined groove abuts against the inner wall of the seal.

[0011] In a preferred embodiment, a gripping rod is fixedly connected between the connecting ring and the seal.

[0012] The technical effects and advantages of this utility model are as follows:

[0013] 1. The spiral pattern, first threaded sleeve, connecting rod, conical part and annular airbag can help the staff to install and fix the filter device, so that the filter device is centrally suspended inside the well point hole.

[0014] 2. By using conical parts, annular airbags, seals and gaskets, workers can be assisted in sealing the outlet of the well point to prevent air leakage and affect the effect of the filtration device in extracting groundwater.

[0015] 3. The use of arc-shaped locking blocks, arc-shaped inclined grooves, and pull rods can help staff quickly dismantle the filter device after use. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0017] Figure 2This is a cross-sectional view of the filter structure of this utility model.

[0018] Figure 3 This is a schematic diagram of the installation component structure of this utility model.

[0019] Figure 4 This is a first-view sectional view of the mounting component of this utility model.

[0020] Figure 5 This utility model Figure 4 Enlarged view of the structure of part A.

[0021] Figure 6 This is a second-view sectional view of the mounting component of this utility model.

[0022] The attached diagram is labeled as follows: 1. Wellpoint pipe; 2. Filter pipe; 3. Cast iron head; 4. Filter screen; 5. Spiral thread; 6. First threaded sleeve; 7. Connecting rod; 8. Conical part; 9. First bending part; 10. Second bending part; 11. Annular airbag; 12. Second threaded sleeve; 13. Connecting ring; 14. Seal; 15. Sealing gasket; 16. Arc-shaped locking block; 17. Arc-shaped inclined groove; 18. Pull rod; 19. Holding 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] Refer to the instruction manual appendix Figure 1-3 ,like Figure 1 and Figure 2 As shown in the figure, an efficient filtration device for dewatering foundation pits in areas with abundant groundwater according to an embodiment of this utility model includes a wellpoint pipe 1, a filter pipe 2 fixedly connected to one end of the wellpoint pipe 1, a cast iron head 3 fixedly connected to the end of the filter pipe 2 away from the wellpoint pipe 1, and a filter screen 4 fixedly installed on the outer wall of the filter pipe 2. The filtration device (wellpoint pipe 1, filter pipe 2, cast iron head 3, and filter screen 4) is prior art, and its working principle is disclosed as prior art, so it will not be described in detail. An installation component is used to assist workers in burying and removing the filtration device, and the installation component is connected to the wellpoint pipe 1.

[0025] Furthermore, such as Figures 3 to 6As shown, the installation assembly includes a spiral pattern 5 formed on the outer wall of the well point pipe 1. A first threaded sleeve 6 is threadedly connected to the outer wall of the spiral pattern 5. A connecting rod 7 is fixedly connected to the outer wall of the first threaded sleeve 6 near the filter pipe 2. A conical part 8 is fixedly connected to the end of the connecting rod 7 away from the first threaded sleeve 6. A first bending part 9 and a second bending part 10 are fixedly connected to the outer wall of the conical part 8. The first bending part 9 and the second bending part 10 are integral with the conical part 8 and are formed by bending. An annular airbag 11 is provided between the first bending part 9 and the second bending part 10. The annular airbag 11 is sleeved on the outer wall of the conical part 8. A second threaded sleeve 12 is threadedly connected to the outer wall of the first threaded sleeve 6. A connecting ring 13 is fixedly connected to the end of the second threaded sleeve 12 away from the connecting rod 7. A sealing element 14 is fixedly connected to the outer wall of the connecting ring 13. The sealing element 14 is located inside the conical part 8. A sealing gasket 15 is provided between the conical part 8 and the sealing element 14. The sealing gasket 15 is fixedly installed on the outer wall of the sealing element 14.

[0026] Furthermore, such as Figures 3 to 6 As shown, an arc-shaped locking block 16 is slidably connected inside the connecting ring 13. The side of the arc-shaped locking block 16 near the well point pipe 1 has anti-slip texture. An arc-shaped inclined groove 17 is formed inside the arc-shaped locking block 16. A pull rod 18 is inserted into the connecting ring 13 and the arc-shaped inclined groove 17. The end of the pull rod 18 away from the arc-shaped inclined groove 17 abuts against the inner wall of the sealing member 14. A gripping rod 19 is fixedly connected between the connecting ring 13 and the sealing member 14.

[0027] The working principle of the technical solution provided by this utility model is as follows:

[0028] When the worker needs to install the filter device, firstly, rotate the first threaded sleeve 6 to the end of the spiral 5 near the filter tube 2, causing the first threaded sleeve 6 to move the corresponding component together. Then, the worker inserts the filter tube 2 of the filter device into the well point hole until the annular air bladder 11 on the outer wall of the conical part 8 is stuck at the top of the well point hole. Because the conical part 8 and the annular air bladder 11 on the outer wall are conical, the filter tube 2 is positioned in the center of the well point hole. Then, the worker can rotate the well point tube 1, causing the well point tube 1 to spiral down along the inside of the first threaded sleeve 6 through the spiral 5 until the filter tube 2 is... After the well point pipe 1 descends to a distance of 0.5 to 1m from the bottom of the well point, it stops. At this point, the filter device is initially fixed inside the well point. Then, the workers can rotate the second threaded sleeve 12 to disengage it from the outer wall of the first threaded sleeve 6, and use the holding rod 19 to drive the connecting ring 13, the second threaded sleeve 12, and other connected components to rise, stopping the sealing of the inner wall of the conical part 8. At this point, the workers can fill the well point with coarse sand through the conical part 8 to form a filter layer, which supports and fixes the filter device and performs preliminary filtration of the extracted groundwater to prevent the groundwater extracted by the filter device from carrying silt and affecting the stability of the foundation pit.

[0029] Furthermore, after the workers have filled the coarse sand, the second threaded sleeve 12 can be reconnected to the first threaded sleeve 6 via threads until the second threaded sleeve 12 drives the sealing gasket 15 on the sealing element 14 to adhere and fix it to the inner wall of the conical part 8 through the connecting ring 13 (the coarse sand at the contact point between the conical part 8 and the sealing gasket 15 needs to be cleaned). This seals the inner wall of the conical part 8. At this time, the gap between the outer wall of the conical part 8 and the well point is sealed by the deformation of the annular airbag 11, and the inner wall of the conical part 8 is sealed. The outlet of the well point is sealed by the sealing element 14 and the sealing gasket 15. If there is air leakage at the sealing point between the annular airbag 11 on the outer wall of the conical part 8 and the well point, yellow clay can be applied to the annular airbag 11 and the well point to seal the leaking point a second time. This prevents air leakage when the subsequent filter device extracts groundwater, which would affect the extraction of groundwater. It also avoids workers from filling the top of the coarse sand layer at the well point with too much yellow clay to seal the well point, which would affect the subsequent disassembly of the filter device.

[0030] Furthermore, when the filter device is no longer in use and needs to be removed, the second threaded sleeve 12 can be rotated to disengage from the outer wall of the first threaded sleeve 6. Then, the pull rod 18 can be rotated relative to the connecting ring 13, causing the pull rod 18 to slide along the inside of the arc-shaped groove 17. This allows the pull rod 18 to push the arc-shaped locking block 16 to slide along the inside of the connecting ring 13 until the side of the arc-shaped locking block 16 with anti-slip texture abuts against the outer wall of the filter device 10 and stops. At this point, under the action of the pull rod 18, the arc-shaped locking block 16 is fixed to the outer wall of the well point pipe 1. The operator can then fix the conical part 8 and rotate the holding rod 19, causing the holding rod 19 to drive the arc-shaped locking block 16 to rotate through the connecting ring 13. This, in turn, causes the arc-shaped locking block 16 to drive the well point pipe 1 to rotate, allowing the well point pipe 1 to pass through the spiral... The spiral 5 rises spirally along the inside of the first threaded sleeve 6, causing the well point tube 1 to gradually detach from the inside of the well point hole. When the well point tube 1 is a certain distance away from the well point hole and the holding rod 19 is a certain height above the ground, the operator can pull the pull rod 18 to reset it, stopping the pull rod 18 from fixing the arc-shaped locking block 16 and the arc-shaped locking block 16 from fixing the well point tube 1. At this time, the operator can adjust the position of the connecting ring 13, the arc-shaped locking block 16, and the holding rod 19 on the outer wall of the well point tube 1, and then repeat the above steps until the first threaded sleeve 6 of the filter device is moved to the end of the spiral 5 near the well point tube 1 by spiral relative movement. At this time, the operator can pull the filter device together with the installation components out of the inside of the well point hole to achieve the effect of quickly removing the filter device.

[0031] Finally, the following points should be noted: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection", and "linkage" should be interpreted broadly, and can be mechanical or electrical connections, or internal connections between two components, or direct connections. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may change.

[0032] Secondly: The accompanying drawings of the embodiments disclosed in this utility model only involve the structures involved in the embodiments disclosed in this utility model. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this utility model can be combined with each other.

[0033] Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. 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 high-efficiency filtration device for dewatering foundation pits in areas with abundant groundwater, comprising wellpoint pipes (1), characterized in that: A filter pipe (2) is fixedly connected to one end of the well point pipe (1), and a cast iron head (3) is fixedly connected to the end of the filter pipe (2) away from the well point pipe (1). A filter screen (4) is fixedly installed on the outer wall of the filter pipe (2). The installation component is used to assist workers in burying and removing the filter device, and the installation component is connected to the well point pipe (1).

2. The high-efficiency filtration device for dewatering foundation pits in areas with abundant groundwater as described in claim 1, characterized in that: The installation assembly includes a spiral pattern (5) formed on the outer wall of the well point pipe (1). The outer wall of the spiral pattern (5) is connected to a first threaded sleeve (6) by a thread. A connecting rod (7) is fixedly connected to the outer wall of the first threaded sleeve (6) near the filter pipe (2). A tapered piece (8) is fixedly connected to the end of the connecting rod (7) away from the first threaded sleeve (6).

3. The high-efficiency filtration device for dewatering foundation pits in areas with abundant groundwater as described in claim 2, characterized in that: The outer wall of the conical part (8) is fixedly connected to a first bending part (9) and a second bending part (10). An annular airbag (11) is provided between the first bending part (9) and the second bending part (10), and the annular airbag (11) is sleeved on the outer wall of the conical part (8).

4. The high-efficiency filtration device for dewatering foundation pits in areas with abundant groundwater as described in claim 2, characterized in that: The outer wall of the first threaded sleeve (6) is connected to a second threaded sleeve (12) by a thread. The end of the second threaded sleeve (12) away from the connecting rod (7) is fixedly connected to a connecting ring (13). The outer wall of the connecting ring (13) is fixedly connected to a sealing element (14).

5. The high-efficiency filtration device for dewatering foundation pits in areas with abundant groundwater as described in claim 4, characterized in that: The sealing element (14) is disposed inside the conical element (8), and a sealing gasket (15) is disposed between the conical element (8) and the sealing element (14). The sealing gasket (15) is fixedly installed on the outer wall of the sealing element (14).

6. The high-efficiency filtration device for dewatering foundation pits in areas with abundant groundwater as described in claim 4, characterized in that: The connecting ring (13) is slidably connected to an arc-shaped locking block (16). The arc-shaped locking block (16) has anti-slip texture on the side near the well point pipe (1). The arc-shaped locking block (16) has an arc-shaped groove (17) inside. A pull rod (18) is inserted into the connecting ring (13) and the arc-shaped groove (17). The end of the pull rod (18) away from the arc-shaped groove (17) abuts against the inner wall of the seal (14).

7. The high-efficiency filtration device for dewatering foundation pits in areas with abundant groundwater as described in claim 4, characterized in that: A gripping rod (19) is fixedly connected between the connecting ring (13) and the sealing element (14).

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