Muddy large foundation pit drainage sand filter device
By combining the design of the filtration and vibration components, the problem of filter clogging is solved, achieving efficient filtration and cleaning of sediment and ensuring water cleanliness.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ANHUI ZHONGCHUNWEI CONSTRUCTION ENGINEERING CO LTD
- Filing Date
- 2025-08-18
- Publication Date
- 2026-07-14
AI Technical Summary
In existing cement and sand filtration devices for large-scale foundation pit drainage in silty soil, the filter screen is easily clogged by fine impurities and silt, affecting the filtration effect.
The design combines a filtration component and a vibration component. The filtration component filters out mud and sand through a filter cartridge, while the vibration component uses a cleaning brush and protrusions to dynamically clean the filter screen and prevent clogging.
It improves filtration efficiency, ensures water cleanliness, and achieves filtration effect through motor drive, avoiding filter clogging and ensuring continuous cleaning effect.
Smart Images

Figure CN224485148U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of foundation pit drainage technology, specifically a cement sand filtration device for pumping out large silty foundation pits. Background Technology
[0002] Large-scale silty foundation pits refer to pits with an excavation depth of 5 meters or more, characterized by complex geological conditions and a sensitive surrounding environment, requiring special support and construction measures. When using pumping equipment to extract water containing silt from large-scale silty foundation pits, suspended solid particles such as silt, soil, and other impurities are removed through a filtration device to ensure water cleanliness and prevent blockage of pipes and equipment.
[0003] According to a Chinese patent publication (CN219440973U), a large-scale cement and sand filtration device for pumping out silt from a foundation pit includes an outer filter plate, a partition filter plate, and an inner filter plate arranged coaxially from the outside to the inside. The bottoms of the outer filter plate, partition filter plate, and inner filter plate are embedded in the bottom of a water collection tank. A primary filter chamber filled with ceramsite is formed between the outer filter plate and the partition filter plate, and a secondary filter chamber filled with crushed stone is formed between the partition filter plate and the inner filter plate. This invention can effectively filter a large amount of suspended impurities and silt, treating the silty water medium into a conventional water medium, improving pumping efficiency, and reducing the maintenance and replacement costs of the centrifugal pump.
[0004] However, existing devices still have the following problems: when filtering water, fine impurities and silt easily clog the filter screen pores, affecting the filtration effect. Therefore, a silt-based large-scale foundation pit drainage and silt filtration device is proposed. Utility Model Content
[0005] The purpose of this invention is to provide a cement and sand filtration device for pumping out large silty foundation pits, in order to solve the problems mentioned in the background art.
[0006] To achieve the above objectives, this utility model provides the following technical solution: a filtration device for pumping out cement sand from a large silty foundation pit, comprising a treatment box;
[0007] Four support legs are fixedly connected to the bottom of the processing box;
[0008] The water inlet trough and the waste discharge trough, which extend through the left and right sides of the treatment box into the interior of the treatment box, are fixed respectively.
[0009] The treatment box is equipped with two valves installed inside the water inlet tank and the waste discharge tank, and a filter assembly and a vibration assembly are installed inside the treatment box.
[0010] The vibration component is located on the surface of the filter component.
[0011] Preferably, the filtration assembly includes a filter cartridge located inside the processing chamber. A support rod is fixedly connected to the bottom surface of the filter cartridge, and the bottom end of the support rod is fixedly connected to the bottom surface inside the processing chamber. A connecting plate is fixedly connected to the side surface inside the processing chamber, and a through groove is formed on the top surface of the connecting plate. A baffle is provided between the connecting plate and the filter cartridge. A water suction pipe is provided above the filter cartridge, and the top surface of the water suction pipe extends through the top surface inside the filter cartridge, the baffle, the through groove, and the top surface inside the processing chamber to the top of the processing chamber. The surface of the water suction pipe is respectively connected to shafts. The support is rotatably connected to the inner wall of the filter cylinder and the inner wall of the treatment box. The inner wall of the baffle is fixedly connected to the surface of the water pump. A water pump is fixedly connected to the top surface of the treatment box. A suction pipe is fixedly connected to the left end of the water pump inlet pipe. The bottom end of the suction pipe extends through the top surface of the water pump pipe into the inside of the water pump pipe. The surface of the suction pipe is rotatably connected to the inner wall of the water pump pipe through a bearing seat. Cleaning brushes are provided on both the left and right sides of the filter cylinder. The adjacent surfaces of the two cleaning brushes are slidably connected to the surface of the filter cylinder. The top surface of the baffle is slidably connected to the bottom surface of the connecting plate.
[0012] Preferably, a motor is fixedly connected to the top surface of the treatment box, and the bottom end of the motor output rod extends through the top surface of the treatment box into the interior of the treatment box. A first gear is fixedly sleeved on the surface of the motor output rod, and a second gear is fixedly sleeved on the surface of the water pumping pipe. The side of the first gear meshes with the side of the second gear. A connecting rod is provided between the second gear and the baffle. The upper and lower end faces of the connecting rod are fixedly connected to the bottom surface of the second gear and the top surface of the baffle, respectively. The surface of the filter cartridge is cleaned by rotating the cleaning brush.
[0013] Preferably, the vibration assembly includes an L-shaped plate fixedly connected to the bottom surface of the baffle. A sliding rod, a connecting block, and a spring are disposed on the inner side of the L-shaped plate. The left side of the connecting block is fixedly connected to the right side of the cleaning brush. The bottom end of the sliding rod slides through the top surface of the connecting block and extends below it. The top and bottom ends of the sliding rod are fixedly connected to the bottom surface of the baffle and the inner bottom surface of the L-shaped plate, respectively. The spring is sleeved on the surface of the sliding rod, and its upper and lower ends are fixedly connected to the bottom surface of the connecting block and the inner bottom surface of the L-shaped plate, respectively. A first protrusion is fixedly connected to the bottom surface of the cleaning brush, and a second protrusion is fixedly connected to the inner bottom surface of the treatment box. The force of the spring causes the cleaning brush to vibrate, thereby shaking off the sand and gravel adhering to the cleaning brush.
[0014] Preferably, the top surface of the water pumping pipe is configured as a closed opening.
[0015] Preferably, four connecting rods are provided and are evenly wrapped around the surface of the water pumping pipe, and the connecting rods provide support for the baffle.
[0016] Preferably, the first protrusion and the second protrusion are adapted to each other, so that the first protrusion can squeeze and drive the cleaning brush to move upward.
[0017] Compared with the prior art, the beneficial effects of this utility model are:
[0018] 1. This silty large-scale foundation pit drainage cement sand filtration device effectively filters water containing silt and sand through a filter assembly and a filter cylinder to ensure water quality cleanliness. At the same time, the motor drives the water pumping pipe and cleaning brush to rotate, realizing the dynamic cleaning of the filter cylinder surface by the cleaning brush, preventing the filter screen from clogging, thereby improving filtration efficiency.
[0019] 2. This silty large-scale foundation pit drainage and cement sand filtration device uses a vibration component. During the rotation of the cleaning brush, the interaction between the first and second protrusions generates vibration, effectively shaking off the mud, sand, and impurities attached to the cleaning brush. This prevents the mud, sand, and impurities on the cleaning brush from affecting the cleaning effect of the filter cylinder. At the same time, through the cooperation of the sliding rod and the spring, the elastic force of the spring allows the cleaning brush to quickly return to its original position during vibration, thereby maintaining close contact between the cleaning brush and the surface of the filter cylinder and ensuring continuous cleaning effect. Attached Figure Description
[0020] Figure 1 This is a front sectional perspective view of the present invention;
[0021] Figure 2 This is a perspective view of the overall main view of this utility model;
[0022] Figure 3 This is a rear perspective view of the entire utility model;
[0023] Figure 4 This is a perspective view of the filter cartridge of this utility model;
[0024] Figure 5 This utility model Figure 1 Enlarged 3D view of area A in the middle.
[0025] In the diagram: 1. Processing box; 2. Support leg; 3. Water inlet tank; 4. Waste discharge tank; 5. Valve; 60. Filter assembly; 601. Filter cylinder; 602. Support rod; 603. Water pump; 604. Water suction pipe; 605. Motor; 606. First gear; 607. Second gear; 608. Connecting plate; 609. Baffle; 6010. Connecting rod; 6011. Cleaning brush; 6012. Vibration assembly; 61. L-shaped plate; 611. First protrusion; 612. Second protrusion; 613. Slide rod; 614. Spring; 615. Connecting block; 616. Detailed Implementation
[0026] 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.
[0027] Example 1: Please refer to Figure 1 - Figure 5 This utility model provides a technical solution: a silty large foundation pit drainage cement sand filtration device, including a treatment box 1;
[0028] Four support legs 2 are fixedly connected to the bottom surface of the processing box 1;
[0029] The water inlet trough 3 and the waste discharge trough 4, which extend through the left and right sides of the treatment box 1 and into the interior of the treatment box 1, are fixed respectively.
[0030] And two valves 5 are respectively installed inside the water inlet tank 3 and the waste discharge tank 4. The treatment box 1 is equipped with a filter assembly 60 and a vibration assembly 61.
[0031] Vibration component 61 is located on the surface of filter component 60.
[0032] The filter assembly 60 includes a filter cylinder 601 located inside the processing box 1. A support rod 602 is fixedly connected to the bottom surface of the filter cylinder 601. The bottom end of the support rod 602 is fixedly connected to the bottom surface inside the processing box 1. A connecting plate 609 is fixedly connected to the side surface inside the processing box 1. A through groove is formed on the top surface of the connecting plate 609. A baffle 6010 is provided between the connecting plate 609 and the filter cylinder 601. A water suction pipe 603 is provided above the filter cylinder 601. The top surface of the water suction pipe 603 extends through the top surface inside the filter cylinder 601, the baffle 6010, the through groove, and the top surface inside the processing box 1 to the top of the processing box 1. The surface of the water suction pipe 603 is connected to the processing box 1 via bearing seats. The inner wall of the filter cylinder 601 is rotatably connected to the inner wall of the treatment box 1. The inner wall of the baffle 6010 is fixedly connected to the surface of the water pump 603. A water pump 604 is fixedly connected to the top surface of the treatment box 1. A suction pipe 605 is fixedly connected to the left end of the water inlet pipe of the water pump 604. The bottom end of the suction pipe 605 extends through the top surface of the water pump 603 and into the interior of the water pump 603. The surface of the suction pipe 605 is rotatably connected to the inner wall of the water pump 603 through a bearing seat. Cleaning brushes 6012 are provided on both the left and right sides of the filter cylinder 601. The adjacent surfaces of the two cleaning brushes 6012 are slidably connected to the surface of the filter cylinder 601. The top surface of the baffle 6010 is slidably connected to the bottom surface of the connecting plate 609.
[0033] A motor 606 is fixedly connected to the top surface of the treatment box 1. The bottom end of the output rod of the motor 606 extends through the top surface of the treatment box 1 into the interior of the treatment box 1. A first gear 607 is fixedly sleeved on the surface of the output rod of the motor 606, and a second gear 608 is fixedly sleeved on the surface of the water pumping pipe 603. The side of the first gear 607 meshes with the side of the second gear 608. A connecting rod 6011 is provided between the second gear 608 and the baffle 6010. The upper and lower end faces of the connecting rod 6011 are fixedly connected to the bottom surface of the second gear 608 and the top surface of the baffle 6010, respectively. Through the filter assembly 60, the filter cylinder 601 effectively filters the water containing sediment, ensuring water quality cleanliness. At the same time, the motor 606 drives the water pumping pipe 603 and the cleaning brush 6012 to rotate, realizing the dynamic cleaning of the surface of the filter cylinder 601 by the cleaning brush 6012, preventing the filter screen from clogging, thereby improving the filtration efficiency.
[0034] The top surface of the 603 water pipe is designed to be closed.
[0035] There are four connecting rods 6011, which are evenly wrapped around the surface of the water pumping pipe 603.
[0036] Example 2: Based on Example 1, a preferred embodiment of the silty large-scale foundation pit drainage cement sand filtration device provided by this utility model is as follows: Figure 1 - Figure 5 As shown: The vibration assembly 61 includes an L-shaped plate 611 fixedly connected to the bottom surface of the baffle 6010. A slide rod 614, a connecting block 616, and a spring 615 are arranged inside the L-shaped plate 611. The left side of the connecting block 616 is fixedly connected to the right side of the cleaning brush 6012. The bottom end of the slide rod 614 slides through the top surface of the connecting block 616 and extends below the connecting block 616. The top and bottom ends of the slide rod 614 are fixedly connected to the bottom surface of the baffle 6010 and the inner bottom surface of the L-shaped plate 611, respectively. The spring 615 is sleeved on the surface of the slide rod 614. The upper and lower ends of the spring 615 are fixedly connected to the bottom surface of the connecting block 616 and the inner bottom surface of the L-shaped plate 611, respectively. The bottom surface of the cleaning brush 6012 is fixedly connected to the first... A first protrusion 612 and a second protrusion 613 are fixedly connected to the bottom surface inside the treatment box 1. Through the vibration assembly 61, the cleaning brush 6012 vibrates during rotation due to the interaction between the first protrusion 612 and the second protrusion 613. This effectively shakes off the mud and impurities attached to the cleaning brush 6012, preventing the mud and impurities on the cleaning brush 6012 from affecting the cleaning effect of the filter cartridge 601. At the same time, through the cooperation of the slide rod 614 and the spring 615, the elastic force of the spring 615 allows the cleaning brush 6012 to quickly return to its original position during vibration, thereby maintaining close contact between the cleaning brush 6012 and the surface of the filter cartridge 601 and ensuring a continuous cleaning effect.
[0037] The first protrusion 612 and the second protrusion 613 are adapted to each other.
[0038] In use, open valve 5 in water inlet trough 3 and start water pump 604. Water from the large foundation pit enters treatment tank 1 through water inlet trough 3. After being filtered by filter cartridge 601, the filtered water enters water pumping pipe 603 and is pumped out through suction pipe 605. Mud and impurities remain in treatment tank 1. Start motor 606. The output rod of motor 606 drives the connected first gear 607 to rotate. The first gear 607 drives the meshing second gear 608 to rotate, causing connecting rod 6011 to rotate and drive baffle 6010 to rotate. This causes cleaning brush 6012 to rotate to clean impurities and mud adhering to the surface of filter cartridge 601.
[0039] When the cleaning brush 6012 rotates, it drives the first protrusion 612 to rotate. When the first protrusion 612 contacts the second protrusion 613, the first protrusion 612 is squeezed, causing the cleaning brush 6012 to move upward and drive the connecting block 616 to slide on the slide rod 614. The connecting block 614 pulls the spring 615. When the first protrusion 612 and the second protrusion 613 are no longer in contact, the force of the spring 615 drives the connecting block 616 to move downward, thereby causing the cleaning brush 6012 to vibrate, thus cleaning away the mud and impurities attached to the cleaning brush 6012. After filtration, the valve 5 in the discharge tank 4 is opened and the valve 5 in the water inlet tank 3 is closed, thereby discharging the mud and impurities in the treatment tank 1.
[0040] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A filtration device for pumping out cement sand from a large silty foundation pit, comprising a treatment box (1); Four support legs (2) are fixedly connected to the bottom of the processing box (1); The water inlet trough (3) and the waste discharge trough (4) extending through the left and right sides of the treatment box (1) into the interior of the treatment box (1) are fixed respectively; And two valves (5) respectively installed inside the water inlet tank (3) and the waste discharge tank (4), characterized in that: The processing box (1) is equipped with a filter assembly (60) and a vibration assembly (61); The vibration component (61) is located on the surface of the filter component (60).
2. The silty large-scale foundation pit drainage and cement sand filtration device according to claim 1, characterized in that: The filter assembly (60) includes a filter cylinder (601) located inside the processing box (1). A support rod (602) is fixedly connected to the bottom surface of the filter cylinder (601). The bottom end of the support rod (602) is fixedly connected to the bottom surface inside the processing box (1). A connecting plate (609) is fixedly connected to the side surface inside the processing box (1). A through groove is opened on the top surface of the connecting plate (609). A baffle (6010) is provided between the connecting plate (609) and the filter cylinder (601). A water pumping pipe (603) is provided above the filter cylinder (601). The top surface of the water pumping pipe (603) extends through the top surface inside the filter cylinder (601), the baffle (6010), the through groove, and the top surface inside the processing box (1) to the top of the processing box (1). The surface of the water pumping pipe (603) is respectively connected by bearings. The seat is rotatably connected to the inner wall of the filter cylinder (601) and the inner wall of the treatment box (1). The inner wall of the baffle (6010) is fixedly connected to the surface of the water pump (603). The top surface of the treatment box (1) is fixedly connected to the water pump (604). The left end of the water pump (604) inlet pipe is fixedly connected to the suction pipe (605). The bottom end of the suction pipe (605) extends through the top surface of the water pump (603) and into the water pump (603). The surface of the suction pipe (605) is rotatably connected to the inner wall of the water pump (603) through the bearing seat. The left and right sides of the filter cylinder (601) are provided with cleaning brushes (6012). The two cleaning brushes (6012) are slidably connected to the surface of the filter cylinder (601) with their adjacent surfaces respectively. The top surface of the baffle (6010) is slidably connected to the bottom surface of the connecting plate (609).
3. The silty large-scale foundation pit drainage and cement sand filtration device according to claim 2, characterized in that: A motor (606) is fixedly connected to the top surface of the processing box (1). The bottom end of the output rod of the motor (606) extends through the top surface of the processing box (1) and into the interior of the processing box (1). A first gear (607) is fixedly sleeved on the surface of the output rod of the motor (606). A second gear (608) is fixedly sleeved on the surface of the water pumping pipe (603). The side of the first gear (607) meshes with the side of the second gear (608). A connecting rod (6011) is provided between the second gear (608) and the baffle (6010). The upper and lower end faces of the connecting rod (6011) are fixedly connected to the bottom surface of the second gear (608) and the top surface of the baffle (6010), respectively.
4. The silty large-scale foundation pit drainage and cement sand filtration device according to claim 2, characterized in that: The vibration assembly (61) includes an L-shaped plate (611) fixedly connected to the bottom surface of the baffle (6010). A slide rod (614), a connecting block (616), and a spring (615) are provided on the inner side of the L-shaped plate (611). The left side of the connecting block (616) is fixedly connected to the right side of the cleaning brush (6012). The bottom end of the slide rod (614) slides through the top surface of the connecting block (616) and extends below the connecting block (616). The top and bottom surfaces are fixedly connected to the bottom surface of the baffle (6010) and the inner bottom surface of the L-shaped plate (611), respectively. The spring (615) is sleeved on the surface of the slide rod (614). The upper and lower surfaces of the spring (615) are fixedly connected to the bottom surface of the connecting block (616) and the inner bottom surface of the L-shaped plate (611), respectively. The bottom surface of the cleaning brush (6012) is fixedly connected to the first protrusion (612), and the bottom surface inside the processing box (1) is fixedly connected to the second protrusion (613).
5. The silty large-scale foundation pit drainage and cement sand filtration device according to claim 2, characterized in that: The top surface of the pumping pipe (603) is designed to be closed.
6. The silty large-scale foundation pit drainage and cement sand filtration device according to claim 3, characterized in that: Four connecting rods (6011) are provided and are evenly wrapped around the surface of the water pumping pipe (603).
7. The silty large-scale foundation pit drainage and cement sand filtration device according to claim 4, characterized in that: The first protrusion (612) and the second protrusion (613) are adapted to each other.