Deep foundation pit drainage equipment
By introducing cleaning and filtration mechanisms and isolation mechanisms into the deep foundation pit drainage equipment, the problem of sludge re-attaching is solved, achieving automated cleaning and convenient maintenance.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JSTI GRP INSPECTION & CERTIFICATION CO LTD
- Filing Date
- 2025-07-17
- Publication Date
- 2026-06-19
AI Technical Summary
During the cleaning process of existing deep foundation pit drainage equipment, sludge is easily re-adhered to the inner cover, affecting the cleaning effect and causing the waterproof cylinder to need frequent cleaning.
A deep foundation pit drainage device was designed, comprising a cleaning and filtration mechanism and an isolation mechanism. The cleaning and filtration mechanism achieves automatic sludge cleaning through multi-stage filter plates and motor-driven cleaning brushes, while the isolation mechanism uses a detachable isolation frame to initially filter large stones and debris.
It achieves automated sludge cleaning, avoids sludge re-attachment, improves cleaning effect, and simplifies the equipment maintenance process.
Smart Images

Figure CN224378923U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of deep foundation pit drainage technology, specifically a deep foundation pit drainage device. Background Technology
[0002] An excavation pit is the space below ground level excavated for the construction of a building's foundation and basement. Because the construction process of an excavation pit is relatively long, and the subsequent building construction process is also very long, if rainy weather occurs during the construction process, a large amount of water will accumulate in the excavation pit. Therefore, drainage work needs to be done after the excavation pit is constructed, which requires the use of deep excavation pit drainage equipment.
[0003] According to a patent application published on the Internet (authorization announcement CN 222375465 U), a deep foundation pit drainage device is described as follows: "A deep foundation pit drainage device includes an isolation cover, an inner cover welded to the bottom of the inner side of the isolation cover, three spiral grooves opened on the outer surface of the inner cover, a rotating ring embedded at the top of the inner cover, three sliders welded to the inner side of the rotating ring, the sliders slidingly embedded in the inner side of the spiral grooves, a rotating groove opened on the outer side of the rotating ring, and a push plate embedded in the inner side of the rotating groove on the outer side of the rotating ring."
[0004] Regarding the above description, the applicant believes the following issues exist:
[0005] In operation, the water pump draws water through the inlet pipe, which then draws water into the outlet pipe. The outlet pipe then draws water into the inner cover through a connecting joint. The inner cover absorbs the water that has been preliminarily filtered by the isolation cover, thus achieving the effect of pumping water outward. During pumping, the isolation cover filters and blocks large stones and other impurities in the pit, while also separating the silt from the inner cover. However, in actual use, the device cleans the inner cover using a waterproof cylinder. During the cleaning process, some sludge remains between the isolation cover and the inner cover, making it easy for a large amount of sludge to re-adhere to the inner cover after cleaning. This necessitates the waterproof cylinder to continuously clean the inner cover, affecting the cleaning effect. Therefore, an improved deep pit drainage device is needed. Utility Model Content
[0006] The purpose of this invention is to provide a deep foundation pit drainage device to solve the problems mentioned in the background art.
[0007] To achieve the above objectives, this utility model provides the following technical solution: a deep foundation pit drainage device, comprising a box body, an inspection door fixedly connected to the front of the box body, a clean water tank fixedly connected to the inner side of the top of the box body, a high-lift submersible pump fixedly connected inside the clean water tank, an ultrasonic level gauge fixedly connected to the inner right wall of the clean water tank, a drain pipe fixedly connected to the top of the clean water tank, a cleaning and filtering mechanism fixedly connected to the bottom of the clean water tank, a control valve provided at the bottom of the cleaning and filtering mechanism, an inlet pipe fixedly connected to the bottom of the control valve, and an isolation mechanism provided outside the inlet pipe;
[0008] The cleaning and filtering mechanism includes a cleaning component and a filtering component, wherein the filtering component is disposed outside the cleaning component;
[0009] The filtration assembly includes a filter box, which is fixedly connected between the clean water tank and the tank body. A drain pipe is fixedly connected to the bottom of the filter box, and a connecting pipe is fixedly connected to the bottom of the filter box. An end cap is fixedly connected to the front of the filter box, and a fine filter plate is fixedly connected to the back of the end cap. An activated carbon filter plate is fixedly connected to the bottom of the fine filter plate, and a second fine filter plate is fixedly connected to the bottom of the activated carbon filter plate. A coarse filter plate is fixedly connected to the back of the end cap, which facilitates multi-stage filtration of the pit water.
[0010] Preferably, the fine filter plate one, activated carbon filter plate, fine filter plate two, and coarse filter plate are all inserted into the filter box, and the control valve is fixedly connected to the bottom of the connecting pipe, so that each filter plate is placed in the corresponding position.
[0011] Preferably, the cleaning assembly includes a motor, which is fixedly connected to the back of the filter box. A rotating column is fixedly connected to the output end of the motor. A first bevel gear is fixedly connected to the front of the rotating column. A connecting plate is fixedly connected to the inner side of the back of the filter box. A fixing sleeve is fixedly connected to the front of the connecting plate. A second bevel gear is rotatably connected inside the fixing sleeve. A spiral conveying blade is fixedly connected to the bottom of the second bevel gear. A third bevel gear is rotatably connected inside the fixing sleeve. A cleaning brush is fixedly connected to the top of the third bevel gear. A sealing gasket is inserted inside the filter box to facilitate cleaning of sludge inside the filter box and cleaning of the coarse filter plate.
[0012] Preferably, the first bevel gear is rotatably connected inside the fixed sleeve, and the first bevel gear meshes with the second bevel gear, and the third bevel gear meshes with the first bevel gear, so as to synchronously drive the cleaning brush and the spiral conveyor blade to rotate.
[0013] Preferably, a groove is provided at the position corresponding to the drain pipe and the spiral conveying blade, and the spiral conveying blade is rotatably connected in the groove. The top of the cleaning brush is in contact with the bottom of the coarse filter plate, and the back of the sealing gasket is in contact with the front of the rotating column, which facilitates cleaning of the coarse filter plate.
[0014] Preferably, the isolation mechanism includes a connecting sleeve, which is fixedly connected to the back of the water inlet pipe. A locking block is slidably connected to the inner side of the connecting sleeve, and a spring is fixedly connected between the locking block and the water inlet pipe. An isolation frame is inserted into the outside of the water inlet pipe, and a locking sleeve is fixedly connected to the top of the isolation frame, which facilitates the later disassembly of the isolation frame to clean the internal sludge.
[0015] Preferably, a slot is provided at the position corresponding to the card sleeve and the card block, and the card block is inserted into the slot to facilitate fixing the isolation frame.
[0016] Compared with the prior art, this utility model provides a deep foundation pit drainage device, which has the following beneficial effects:
[0017] 1. This deep foundation pit drainage equipment uses a cleaning and filtration mechanism, especially a coarse filter plate, for initial filtration. Water flowing through the activated carbon filter plate then passes through the fine filter plate into the clean water tank. A high-lift submersible pump pressurizes the water, which is then discharged through a drain pipe to the outside of the foundation pit, thus achieving drainage. During the overall operation of the device, after a preset time, the sludge enters the filter box. When sludge settles at the bottom of the filter box, the motor is activated to discharge the sludge from inside the filter box. This process prevents a large amount of sludge from re-adhering to the inner cover after cleaning, thereby improving the cleaning effect.
[0018] 2. This deep foundation pit drainage equipment uses an isolation mechanism to perform preliminary filtration through its isolation frame, thereby intercepting large stones and debris inside the foundation pit. During later maintenance, the isolation frame and the water inlet pipe can be disassembled by manually pulling the locking block, making it easy to clean the sludge between the water inlet pipe and the isolation frame. Attached Figure Description
[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0020] Figure 1 This is a schematic diagram of the appearance and structure of this utility model;
[0021] Figure 2 This is a front sectional view of the present invention.
[0022] Figure 3 This is a schematic diagram of the left side structure of the cleaning and filtering mechanism of this utility model;
[0023] Figure 4 This is a schematic diagram of the unfolded structure of the cleaning component of this utility model on the left side;
[0024] Figure 5 This is a schematic diagram of the unfolded structure of the filter assembly of this utility model on the left side;
[0025] Figure 6 This is a schematic diagram of the unfolded structure of the isolation mechanism of this utility model on the left side.
[0026] In the diagram: 1. Housing; 2. Drain pipe; 3. Control valve; 4. Inlet pipe; 5. Isolation mechanism; 6. Inspection door; 7. Cleaning and filtration mechanism; 8. Clean water tank; 9. Ultrasonic level gauge; 10. High-lift submersible pump; 71. Cleaning assembly; 72. Filtration assembly; 711. Motor; 712. Rotating column; 713. Sealing gasket; 714. Bevel gear one; 715. Bevel gear two; 716. Spiral conveyor blade; 717. Bevel gear three; 718. Cleaning brush; 719. Connecting plate; 7110. Fixing sleeve; 721. Filter box; 722. Sewage pipe; 723. Connecting pipe; 724. End cap; 725. Fine filter plate one; 726. Activated carbon filter plate; 727. Fine filter plate two; 728. Coarse filter plate; 51. Connecting sleeve; 52. Spring; 53. Locking block; 54. Locking sleeve; 55. Isolation frame. Detailed Implementation
[0027] 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.
[0028] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances. Example
[0029] Based on existing technology, this device cleans its inner cover using a waterproof cylinder. However, during the cleaning process, some sludge remains between the isolation cover and the inner cover, making it easy for a large amount of sludge to re-adhere to the inner cover after cleaning. This necessitates continuous cleaning of the inner cover by the waterproof cylinder, affecting the cleaning effect. Please refer to [link to relevant documentation]. Figure 1-6 This utility model provides a technical solution: a deep foundation pit drainage device, including a box body 1, an inspection door 6 fixedly connected to the front of the box body 1, a clean water tank 8 fixedly connected to the inner side of the top of the box body 1, a high-lift submersible pump 10 fixedly connected inside the clean water tank 8, an ultrasonic level gauge 9 fixedly connected to the inner right side of the clean water tank 8, a drain pipe 2 fixedly connected to the top of the clean water tank 8, a cleaning and filtering mechanism 7 fixedly connected to the bottom of the clean water tank 8, a control valve 3 set at the bottom of the cleaning and filtering mechanism 7, a water inlet pipe 4 fixedly connected to the bottom of the control valve 3, and an isolation mechanism 5 set outside the water inlet pipe 4;
[0030] The cleaning and filtration mechanism 7 includes a cleaning component 71 and a filter component 72, with the filter component 72 disposed outside the cleaning component 71;
[0031] The filter assembly 72 includes a filter box 721, which is fixedly connected between the clean water tank 8 and the tank body 1. A drain pipe 722 is fixedly connected to the bottom of the filter box 721, and a connecting pipe 723 is fixedly connected to the bottom of the filter box 721. An end cap 724 is fixedly connected to the front of the filter box 721, and a fine filter plate 725 is fixedly connected to the back of the end cap 724. An activated carbon filter plate 726 is fixedly connected to the bottom of the fine filter plate 725, and a fine filter plate 727 is fixedly connected to the bottom of the activated carbon filter plate 726. A coarse filter plate 728 is fixedly connected to the back of the end cap 724, which facilitates multi-stage filtration of the pit water.
[0032] Furthermore, fine filter plate 725, activated carbon filter plate 726, fine filter plate 727, and coarse filter plate 728 are all inserted into the filter box 721, and control valve 3 is fixedly connected to the bottom of connecting pipe 723, so that each filter plate can be set in the corresponding position.
[0033] Furthermore, the cleaning assembly 71 includes a motor 711, which is fixedly connected to the back of the filter box 721. A rotating column 712 is fixedly connected to the output end of the motor 711. A bevel gear 714 is fixedly connected to the front of the rotating column 712. A connecting plate 719 is fixedly connected to the inner side of the back of the filter box 721. A fixing sleeve 7110 is fixedly connected to the front of the connecting plate 719. A bevel gear 715 is rotatably connected inside the fixing sleeve 7110. A spiral conveying blade 716 is fixedly connected to the bottom of the bevel gear 715. A bevel gear 717 is rotatably connected inside the fixing sleeve 7110. A cleaning brush 718 is fixedly connected to the top of the bevel gear 717. A sealing gasket 713 is inserted inside the filter box 721 to facilitate cleaning of the sludge inside the filter box 721 and cleaning of the coarse filter plate 728.
[0034] Furthermore, bevel gear 714 is rotatably connected inside the fixed sleeve 7110, and bevel gear 714 meshes with bevel gear 715, and bevel gear 717 meshes with bevel gear 714, so as to synchronously drive the cleaning brush 718 and the spiral conveying blade 716 to rotate.
[0035] Furthermore, a groove is provided at the corresponding position of the drain pipe 722 and the spiral conveying blade 716, and the spiral conveying blade 716 is rotatably connected in the groove. The top of the cleaning brush 718 is in contact with the bottom of the coarse filter plate 728, and the back of the sealing gasket 713 is in contact with the front of the rotating column 712, which facilitates cleaning of the coarse filter plate 728. Sealing rings are engaged at the connection between the housing 1 and the maintenance door 6, and at the connection between the filter box 721 and the end cover 724. The connection between the housing 1 and the maintenance door 6, and the connection between the filter box 721 and the end cover 724 are all fixedly connected by bolts. Example
[0036] Given the current limitations of existing technologies in isolating large rocks and debris, please refer to [link / reference needed]. Figure 6 Furthermore, in conjunction with Embodiment 1, the isolation mechanism 5 includes a connecting sleeve 51, which is fixedly connected to the back of the water inlet pipe 4. A locking block 53 is slidably connected to the inner side of the connecting sleeve 51. A spring 52 is fixedly connected between the locking block 53 and the water inlet pipe 4. An isolation frame 55 is inserted into the outside of the water inlet pipe 4. A locking sleeve 54 is fixedly connected to the top of the isolation frame 55, which facilitates the later disassembly of the isolation frame 55 to clean the internal sludge.
[0037] Furthermore, a slot is provided at the corresponding position of the card sleeve 54 and the card block 53, and the card block 53 is inserted into the slot to facilitate fixing the isolation frame 55.
[0038] In actual operation, when the device is in use, the control method of this utility model is controlled by manually starting and stopping the switch. The wiring diagram of the power element and the supply of power are common knowledge in the field. Since this utility model is mainly used to protect mechanical devices, the control method and wiring layout will not be explained in detail. The control method of this utility model is automatic control through a controller. The control circuit of the controller can be implemented by simple programming by those skilled in the art. The supply of power is also common knowledge in the field. Since this utility model is mainly used to protect mechanical devices, the control method and circuit connection will not be explained in detail.
[0039] First, the housing 1 and its connected components are completely submerged in the water in the foundation pit. The length of the drain pipe 2 is increased as needed. During operation, the high-lift submersible pump 10 is started and adjusted by the control valve 3. The water in the foundation pit is initially filtered by the isolation frame 55 of the isolation mechanism 5, thereby intercepting large stones and debris inside the foundation pit. Subsequently, the water in the foundation pit flows into the filter box 721 through the inlet pipe 4 and is further filtered by the cleaning filter mechanism 7, especially the coarse filter plate 7. The water undergoes initial filtration at 28, followed by filtration through fine filter plate 727. Simultaneously, as the water flows through fine filter plate 727, activated carbon filter plate 726 adsorbs odors and harmful substances. Next, the water passing through activated carbon filter plate 726 passes through fine filter plate 725 and enters the clear water tank 8. Then, a high-lift submersible pump 10 pressurizes the water, causing it to be discharged outside the pit through drain pipe 2, thus achieving the drainage function. Furthermore, during the overall operation of the device, when the device has been in operation for a preset time... Then, it enters the filter box 721. When the sludge settles at the bottom of the filter box 721, and the motor 711 is started, the rotating column 712 is driven to rotate synchronously by the motor 711. During the rotation of the rotating column 712, the first bevel gear 714 is driven to rotate synchronously, and the first bevel gear 714 drives the third bevel gear 717 to rotate synchronously. The third bevel gear 717 drives the cleaning brush 718 to rotate synchronously. Then, the cleaning brush 718 scrapes the sludge below the coarse filter plate 728. At the same time, the bevel gear... 714 synchronously drives bevel gear 715 to rotate, which in turn drives spiral conveyor blade 716 to rotate. This allows the sludge inside filter box 721 to be discharged from the drain pipe 722. During later maintenance, simply pull the locking block 53 manually to completely disengage it from the sleeve 54, and then pull down the isolation frame 55 to disassemble the isolation frame 55 from the inlet pipe 4, making it easier to clean the sludge between the inlet pipe 4 and the isolation frame 55.
[0040] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.
Claims
1. A deep foundation pit drainage apparatus comprising a box (1), characterized in that: The front of the box (1) is fixedly connected to an inspection door (6), the top inner side of the box (1) is fixedly connected to a clean water tank (8), the inside of the clean water tank (8) is fixedly connected to a high-lift submersible pump (10), the right inner wall of the clean water tank (8) is fixedly connected to an ultrasonic level gauge (9), the top of the clean water tank (8) is fixedly connected to a drain pipe (2), the bottom of the clean water tank (8) is fixedly connected to a cleaning and filtering mechanism (7), the bottom of the cleaning and filtering mechanism (7) is provided with a control valve (3), the bottom of the control valve (3) is fixedly connected to a water inlet pipe (4), and the outside of the water inlet pipe (4) is provided with an isolation mechanism (5). The cleaning and filtering mechanism (7) includes a cleaning component (71) and a filtering component (72), wherein the filtering component (72) is disposed outside the cleaning component (71); The filter assembly (72) includes a filter box (721), which is fixedly connected between the clean water tank (8) and the box body (1). A drain pipe (722) is fixedly connected to the bottom of the filter box (721), and a connecting pipe (723) is fixedly connected to the bottom of the filter box (721). An end cap (724) is fixedly connected to the front of the filter box (721), and a fine filter plate (725) is fixedly connected to the back of the end cap (724). An activated carbon filter plate (726) is fixedly connected to the bottom of the fine filter plate (725), and a fine filter plate (727) is fixedly connected to the bottom of the activated carbon filter plate (726). A coarse filter plate (728) is fixedly connected to the back of the end cap (724).
2. The deep foundation pit drainage device according to claim 1, characterized in that: The fine filter plate one (725), activated carbon filter plate (726), fine filter plate two (727), and coarse filter plate (728) are all inserted into the filter box (721), and the control valve (3) is fixedly connected to the bottom of the connecting pipe (723).
3. The deep foundation pit drainage device according to claim 1, characterized in that: The cleaning assembly (71) includes a motor (711), which is fixedly connected to the back of the filter box (721). A rotating column (712) is fixedly connected to the output end of the motor (711). A bevel gear (714) is fixedly connected to the front of the rotating column (712). A connecting plate (719) is fixedly connected to the inner side of the back of the filter box (721). A fixing sleeve (7110) is fixedly connected to the front of the connecting plate (719). A bevel gear (715) is rotatably connected inside the fixing sleeve (7110). A spiral conveying blade (716) is fixedly connected to the bottom of the bevel gear (7115). A bevel gear (717) is rotatably connected inside the fixing sleeve (7110). A cleaning brush (718) is fixedly connected to the top of the bevel gear (717). A sealing gasket (713) is inserted inside the filter box (721).
4. A deep foundation pit drainage device according to claim 3, characterized in that: The first bevel gear (714) is rotatably connected inside the fixed sleeve (7110), and the first bevel gear (714) meshes with the second bevel gear (715), and the third bevel gear (717) meshes with the first bevel gear (714).
5. A deep foundation pit drainage device according to claim 3, characterized in that: The drain pipe (722) has a groove at the corresponding position of the spiral conveying blade (716), and the spiral conveying blade (716) is rotatably connected in the groove. The top of the cleaning brush (718) is in contact with the bottom of the coarse filter plate (728), and the back of the sealing gasket (713) is in contact with the front of the rotating column (712).
6. A deep foundation pit drainage device according to claim 1, characterized in that: The isolation mechanism (5) includes a connecting sleeve (51), which is fixedly connected to the back of the water inlet pipe (4). A locking block (53) is slidably connected to the inner side of the connecting sleeve (51). A spring (52) is fixedly connected between the locking block (53) and the water inlet pipe (4). An isolation frame (55) is inserted into the outside of the water inlet pipe (4). A locking sleeve (54) is fixedly connected to the top of the isolation frame (55).
7. A deep foundation pit drainage device according to claim 6, characterized in that: The sleeve (54) and the card block (53) are provided with slots at corresponding positions, and the card block (53) is inserted into the slot.