Foundation pit drainage device

Abstract

The utility model discloses a foundation pit drainage device, and belongs to the technical field of foundation pit drainage. A foundation pit drainage device comprises a protective cover, a plurality of filter holes are formed in the lower portion of the protective cover, an impeller is rotationally connected into the upper portion of the protective cover, a connecting shaft is fixedly connected to the impeller, one end of the connecting shaft penetrates out of the protective cover and is fixedly connected with a scraper, a plurality of arc-shaped plates are annularly and slidably connected into the lower portion of the protective cover at equal intervals, and a guide wheel is in transmission connection to the connecting shaft. The guide wheels are used for driving the arc-shaped plate to move to be attached to the protective cover. Water flow drives the impeller to rotate when passing through the protective cover, the connecting shaft drives the scraping plate to rotate quickly to drive the guide wheel to rotate intermittently at low speed, the arc-shaped plate abuts against the inner wall of the protective cover when the guide wheel abuts against the wedge-shaped block, the filtering holes in the position lose suction force, and therefore the scraping plate can effectively scrape away sundries in the position, and the cleaning effect is good.

Description

Technical Field

[0001] The present application relates to the technical field of foundation pit drainage, and more specifically, to a foundation pit drainage device. Background Art

[0002] Foundation pit drainage refers to a series of drainage measures taken in construction projects to prevent water accumulation in foundation pits. The purpose of foundation pit drainage is to ensure the dryness of the interior of the foundation pit and prevent the moisture inside the foundation pit from affecting the structure and quality of the building. When the foundation pit is draining, debris will be drawn into the water pipe, causing the water pipe to be blocked or the water pump to be damaged. The patent document with the prior art publication number CN219722095U provides a foundation pit drainage device. The device can clean the debris on the filter cartridge by setting a cleaning mechanism to avoid soil or debris adhering to the filter hole, which affects the subsequent use of the filter cartridge.

[0003] In view of the above-mentioned related technologies, the inventor believes that since the suction force generated by the filter cartridge when pumping water absorbs the debris in the hole, it is difficult for the cleaning mechanism moving up and down to effectively clean the debris in the hole. Therefore, we propose a foundation pit drainage device. Utility Model Content

[0004] In order to improve the problems raised in the above background technology, the present application provides a foundation pit drainage device, which adopts the following technical solution:

[0005] A foundation pit drainage device comprises a protective cover connected to a water pipe, a plurality of filter holes are provided at the lower portion of the protective cover, an impeller is rotatably connected in the upper portion of the protective cover, a connecting shaft is fixedly connected to the impeller, one end of the connecting shaft passes through the protective cover and is fixedly connected to a scraper, a plurality of arc plates are slidably connected in a circular shape with equal intervals in the lower portion of the protective cover, the outer curvature of the arc plates is the same as the inner curvature of the protective cover, a guide wheel is transmission-connected to the connecting shaft, and the guide wheel is used to drive the arc plates to move until they are in contact with the protective cover.

[0006] By adopting the above technical solution, water flows into the protective cover and drives the impeller to rotate, and the connecting shaft drives the guide wheel and the scraper to rotate. After the guide wheel drives the arc plate to move until it abuts against the inner wall of the protective cover, the filter holes in the contact part of the protective cover and the arc plate cannot absorb water, thereby losing suction, so that the scraper can effectively scrape off the debris on the filter holes.

[0007] Optionally, the edges and corners of the arc-shaped plate are slidably connected with limit rods, the limit rods are fixedly connected to the protective cover, and a wedge block is fixedly connected to the arc-shaped plate, and the guide wheel is in rolling contact with the wedge block.

[0008] By adopting the above technical solution, when the guide wheel contacts the inclined surface of the wedge block, the arc plate slides straight through the limit rod until it abuts against the inner wall of the protective cover, so that the filter hole at the abutment point of the protective cover and the arc plate loses suction, which helps the scraper to scrape away the debris there.

[0009] Optionally, an incomplete gear is fixedly connected to the connecting shaft, an inner ring gear is disposed outside the incomplete gear, a plurality of transmission gears are meshedly connected between the incomplete gear and the inner ring gear, and the guide wheel is fixedly connected to the inner ring gear.

[0010] By adopting the above technical solution, the incomplete gear intermittently meshes with the transmission gear, thereby driving the inner ring gear to rotate intermittently, so that the guide wheel intermittently contacts the multiple wedge blocks.

[0011] Optionally, the inner ring gear is rotatably connected to a limit frame fixedly connected to the protective cover, and the transmission gear is rotatably connected to the protective cover via a rotating shaft. A limit assembly is connected to the rotating shaft, and the limit assembly is used to limit the steering of the transmission gear.

[0012] By adopting the above technical solution, the limiting component enables the transmission gear to rotate in one direction, thereby preventing the transmission gear from rotating in the opposite direction when the incomplete gear is no longer engaged with the transmission gear.

[0013] Optionally, the limiting assembly includes a ratchet fixedly connected to the rotating shaft, a clamping block is abutted on one side of the ratchet, the clamping block is slidably connected to the protective cover, and the clamping block is elastically connected to the protective cover via a spring.

[0014] By adopting the above technical solution, the spring drives the clamping block to abut against the ratchet wheel, so that the transmission gear connected to the ratchet wheel can only rotate in one direction, thereby avoiding reverse rotation.

[0015] In summary, the present application includes at least one of the following beneficial technical effects:

[0016] 1. When water flows through the protective cover, it drives the impeller to rotate, the shaft drives the scraper to rotate quickly, and the first stage drives the guide wheel to rotate slowly and intermittently. When the guide wheel abuts against the wedge block, the arc plate abuts against the inner wall of the protective cover, so that the filter hole loses suction, so that the scraper can effectively scrape off the debris there, and the cleaning effect is good.

[0017] 2. The inner ring gear drives the guide wheel to rotate intermittently through the cooperation of the incomplete gear and the transmission gear, so that the multiple arc plates are in contact with the protective cover in sequence, so that the protective cover can always maintain an effective pumping state. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the overall structure of a foundation pit drainage device according to an embodiment of the present application;

[0019] Figure 2 A schematic top view of a protective cover and an arc-shaped plate structure of a foundation pit drainage device according to an embodiment of the present application;

[0020] Figure 3 A schematic diagram of the anatomical structure of a protective cover of a foundation pit drainage device according to an embodiment of the present application;

[0021] Figure 4 This is a schematic diagram of the connecting shaft and guide wheel structure of a foundation pit drainage device according to an embodiment of the present application;

[0022] Figure 5 This is a schematic diagram of the structure of a limiting component of a foundation pit drainage device according to an embodiment of the present application;

[0023] Explanation of the numbers in the figure: 1. Protective cover; 2. Filter hole; 3. Impeller; 4. Coupling; 5. Scraper; 6. Arc plate; 7. Limit rod; 8. Incomplete gear; 9. Inner ring gear; 10. Transmission gear; 11. Guide wheel; 12. Wedge block; 13. Rotating shaft; 14. Limit frame; 15. Limit assembly; 1501. Ratchet; 1502. Block; 1503. Spring. DETAILED DESCRIPTION

[0024] The present application is further described in detail below in conjunction with the accompanying drawings.

[0025] Reference Figure 1-5 The present application includes a protective cover 1 connected to a water pipe, a plurality of filtering holes 2 are opened at the lower part of the protective cover 1, an impeller 3 is rotatably connected in the upper part of the protective cover 1, a connecting shaft 4 is fixedly connected to the impeller 3, one end of the connecting shaft 4 passes through the protective cover 1 and is fixedly connected to a scraper 5, a plurality of arc plates 6 are slidably connected in an annular manner with equal intervals in the lower part of the protective cover 1, the outer curvature of the arc plate 6 is the same as the inner curvature of the protective cover 1, a guide wheel 11 is transmission-connected to the connecting shaft 4, the guide wheel 11 is used to drive the arc plate 6 to move to fit with the protective cover 1, the water pump generates suction in the protective cover 1 through the water pipe to pump water from the foundation pit, the water flow enters the protective cover 1 and drives the impeller 3 to rotate, the connecting shaft 4 drives the guide wheel 11 and the scraper 5 to rotate, and the guide wheel 11 drives the arc plate 6 to move to abut against the inner wall of the protective cover 1, the filtering holes 2 of the contact part of the protective cover 1 and the arc plate 6 cannot absorb water, thereby losing suction, so that the scraper 5 can effectively scrape off the debris on the filtering holes 2.

[0026] Reference Figure 2 , Figure 3The edges and corners of the arc plate 6 are slidably connected with limit rods 7, the limit rods 7 are fixedly connected to the protective cover 1, and a wedge block 12 is fixedly connected to the arc plate 6. The guide wheel 11 is in rolling contact with the wedge block 12. When the guide wheel 11 is in contact with the inclined surface of the wedge block 12, the arc plate 6 slides straight through the limit rod 7 until it abuts against the inner wall of the protective cover 1, so that the filter hole 2 at the abutment between the protective cover 1 and the arc plate 6 loses suction, which helps the scraper 5 to scrape off the debris there.

[0027] When the guide wheel 11 cancels the contact with the wedge block 12, the water flows into the protective cover 1 and drives the arc plate 6 to automatically reset.

[0028] Reference Figure 4 An incomplete gear 8 is fixedly connected to the connecting shaft 4, an inner ring gear 9 is arranged outside the incomplete gear 8, a plurality of transmission gears 10 are meshed and connected between the incomplete gear 8 and the inner ring gear 9, a guide wheel 11 is fixedly connected to the inner ring gear 9, and the incomplete gear 8 is symmetrically provided with protruding arc-shaped racks on both sides. The incomplete gear 8 is intermittently meshed with the transmission gear 10 to drive the inner ring gear 9 to rotate intermittently, so that the guide wheel 11 intermittently contacts with the plurality of wedge blocks 12.

[0029] Reference Figure 4 The inner ring gear 9 is rotatably connected to the limit frame 14 fixedly connected to the protective cover 1, and the transmission gear 10 is rotatably connected to the protective cover 1 through the rotating shaft 13. A limiting component 15 is connected to the rotating shaft 13. The limiting component 15 is used to limit the steering of the transmission gear 10. The limiting component 15 allows the transmission gear 10 to rotate in one direction, which can prevent the transmission gear 10 from rotating in the opposite direction when the incomplete gear 8 is disengaged from the transmission gear 10.

[0030] Reference Figure 4 The diameter of the incomplete gear 8 is smaller than that of the transmission gear 10, so that the incomplete gear 8 and the transmission gear 10 are in a decelerated motion, thereby reducing the movement frequency of the arc plate 6, on the one hand, allowing the protective cover 1 to effectively pump water, and on the other hand, reducing the wear rate of the structure.

[0031] Reference Figure 5 The limiting assembly 15 includes a ratchet 1501 fixedly connected to the rotating shaft 13, and a clamping block 1502 is abutted on one side of the ratchet 1501. The clamping block 1502 is slidably connected to the protective cover 1, and the clamping block 1502 is elastically connected to the protective cover 1 through a spring 1503. The spring 1503 drives the clamping block 1502 to abut against the ratchet, so that the transmission gear 10 connected to the ratchet 1501 can only rotate in one direction to avoid reverse rotation.

[0032] The implementation principle of a foundation pit drainage device in an embodiment of the present application is as follows: a protective cover 1 is placed in a water-stagnant place in a foundation pit, a water pump pumps water to generate suction in the protective cover 1, and the accumulated water is pumped out. When the water flows through the impeller 3, it drives the connecting shaft 4 to rotate, and the connecting shaft 4 drives the scraper 5 to rotate rapidly. The incomplete gear 8 intermittently meshes with the transmission gear 10, thereby driving the inner ring gear 9 to rotate intermittently, so that the guide wheel 11 intermittently contacts with multiple wedge blocks 12. When the guide wheel 11 contacts the inclined surface of the wedge block 12, the arc plate 6 slides straight through the limit rod 7 until it abuts against the inner wall of the protective cover 1, so that the filter hole 2 at the abutment between the protective cover 1 and the arc plate 6 loses suction, which helps the scraper 5 to scrape off the debris there.

Claims

1. A foundation pit drainage device, characterized in that: The invention comprises a protective cover (1) connected to a water pipe, wherein a plurality of filtering holes (2) are provided at the lower part of the protective cover (1), an impeller (3) is rotatably connected to the upper part of the protective cover (1), a connecting shaft (4) is fixedly connected to the impeller (3), one end of the connecting shaft (4) passes through the protective cover (1) and is fixedly connected to a scraper (5), a plurality of arc plates (6) are slidably connected to the lower part of the protective cover (1) in an annular shape at equal intervals, the outer curvature of the arc plates (6) is the same as the inner curvature of the protective cover (1), and a guide wheel (11) is drivingly connected to the connecting shaft (4), and the guide wheel (11) is used to drive the arc plates (6) to move to fit with the protective cover (1).

2. A foundation pit drainage device according to claim 1, characterized in that: The corners of the arc plate (6) are slidably connected to limit rods (7), the limit rods (7) are fixedly connected to the protective cover (1), and a wedge block (12) is fixedly connected to the arc plate (6), and the guide wheel (11) is in rolling contact with the wedge block (12).

3. A foundation pit drainage device according to claim 1, characterized in that: An incomplete gear (8) is fixedly connected to the connecting shaft (4); an inner ring gear (9) is disposed on the outer shell of the incomplete gear (8); a plurality of transmission gears (10) are meshingly connected between the incomplete gear (8) and the inner ring gear (9); and the guide wheel (11) is fixedly connected to the inner ring gear (9).

4. A foundation pit drainage device according to claim 3, characterized in that: The inner ring gear (9) is rotationally connected to a limit frame (14) fixedly connected to the protective cover (1), and the transmission gear (10) is rotationally connected to the protective cover (1) via a rotating shaft (13). A limit assembly (15) is connected to the rotating shaft (13), and the limit assembly (15) is used to limit the steering of the transmission gear (10).

5. A foundation pit drainage device according to claim 4, characterized in that: The limiting assembly (15) comprises a ratchet (1501) fixedly connected to the rotating shaft (13); a clamping block (1502) is abutted against one side of the ratchet (1501); the clamping block (1502) is slidably connected to the protective cover (1); and the clamping block (1502) is elastically connected to the protective cover (1) via a spring (1503).

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