A foundation pit drainage unit for building construction
By incorporating a conical tube, filter screen, and steel ball structure into the inlet pipe, the problem of inlet pipe blockage was solved, achieving efficient water pumping and motor protection, thus ensuring construction safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-30
- Publication Date
- 2026-06-02
AI Technical Summary
The inlet pipes of existing pumping and drainage units used in construction are easily blocked by mud and clods, which reduces water intake efficiency and affects construction progress and safety.
It adopts a conical cylinder structure, with a filter screen and irregularly distributed protrusions and steel balls inside the conical cylinder. The rotation of the conical cylinder causes the soil clumps to rub and grind into fine sand by friction with the steel balls, avoiding blockage. The inner wall of the conical cylinder is sealed with bearings to prevent untreated water from flowing through, and the motor protection box prevents motor damage.
It effectively prevents soil clogging of the water inlet pipe, maintains efficient water pumping, ensures construction safety and progress, and protects motor equipment.
Smart Images
Figure CN224315190U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of drainage pumping units, specifically a foundation pit drainage pumping unit used in building construction. Background Technology
[0002] In the construction process, drainage of the foundation pit is a crucial step. Water accumulation in the pit not only affects the construction progress but can also threaten the stability of the pit slope and even lead to safety accidents. Therefore, timely removal of water from the pit using pumping units is a key measure to ensure construction safety and smooth progress. Existing pumping units for construction typically include pumping equipment, drainage pipes, power supply, and a control system. The pumping equipment generally uses submersible pumps.
[0003] In the prior art, a submersible pump is equipped with an inlet pipe at one end and a drain port at the other end. The drain port is connected to the drain pipe during use. The inlet pipe is generally made of metal pipe with a large number of mesh holes on its surface to prevent mud clogging the inside of the submersible pump.
[0004] However, simply using a perforated metal pipe to block soil clods from entering the water inlet pipe can easily cause soil clods to accumulate outside the perforated area, clogging the perforation and reducing water intake efficiency. Utility Model Content
[0005] The purpose of this invention is to provide a foundation pit dewatering unit for building construction, 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 foundation pit pumping and drainage unit for building construction, comprising: an inlet pipe, one end of which is provided with a liquid inlet, and the other end of which is provided with a liquid outlet; a conical cylinder is rotatably connected inside the inlet pipe; one end of the conical cylinder is provided with a conical cylinder liquid inlet, and the other end of the conical cylinder is provided with a conical cylinder liquid outlet; a filter screen is fixed in the conical cylinder liquid outlet; several sets of protrusions are provided on the inner wall surface of the conical cylinder; and a large number of steel balls are filled in the conical cylinder.
[0007] Preferably, the conical cylinder has one end with a liquid inlet near the liquid inlet, the conical cylinder has a hollow frustum-shaped structure, the inner and outer wall diameters of the liquid inlet end of the conical cylinder are both smaller than the inner and outer wall diameters of the liquid outlet end of the conical cylinder, and the diameter of the steel ball is larger than the mesh size of the filter screen.
[0008] Preferably, sealed bearings are provided at both ends of the side wall of the conical cylinder, and the outer ring of the sealed bearing is fixed to the pipe wall of the water inlet pipe.
[0009] Preferably, several groups of the protrusions are irregularly distributed on the inner wall of the conical cylinder.
[0010] Preferably, a gear groove is formed on the surface of the water inlet pipe, and an intermediate gear is rotatably connected in the gear groove.
[0011] Preferably, a motor is fixed on the surface of the water inlet pipe, and a drive gear is fixed on the drive shaft of the motor.
[0012] Preferably, a driven gear is fixedly fitted on the outer wall of the conical cylinder, the driven gear meshes with the intermediate gear, and the intermediate gear meshes with the driving gear.
[0013] Preferably, a motor protection box is fixed on the surface of the water inlet pipe, the motor is fixed in the motor protection box, and a battery is also fixed in the motor protection box.
[0014] Compared with the prior art, the beneficial effects of this utility model are:
[0015] The present invention proposes a foundation pit pumping and drainage unit for building construction. Soil lumps entering the water inlet pipe through the inlet port then enter the conical cylinder through the inlet end. The soil lumps in the water are blocked by a filter screen. Then, as the conical cylinder rotates, protrusions on the inner wall surface push steel balls and soil lumps together to rotate. Because the size and distribution of the protrusions are irregular, the soil lumps and steel balls also move irregularly within the conical cylinder, resulting in frequent friction between them. During this friction, the soil lumps are ground into sand with a diameter smaller than the mesh size of the filter screen, preventing further blockage of the submersible pump. The sand then passes through the filter screen along with the water and is discharged from the outlet. As water enters the submersible pump, it is pumped out of the foundation pit through the pump's drain pipe, thus preventing soil lumps from clogging the inlet pipe. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the structure of this utility model;
[0017] Figure 2 This is a schematic cross-sectional view of the present invention.
[0018] Figure 3 for Figure 2 Enlarged schematic diagram of the structure at point A in the middle.
[0019] In the diagram: 1. Water inlet pipe; 2. Liquid inlet; 3. Liquid outlet; 4. Conical cylinder; 5. Liquid inlet end of conical cylinder; 6. Liquid outlet end of conical cylinder; 7. Filter screen; 8. Driven gear; 9. Gear groove; 10. Intermediate gear; 11. Driven gear; 12. Motor; 13. Sealed bearing; 14. Protrusion; 15. Motor protection box; 16. Battery. Detailed Implementation
[0020] To make the objectives, technical solutions, and advantages of this utility model clear and complete, the embodiments of this utility model will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only some, not all, embodiments of this utility model, and are merely used to explain the embodiments of this utility model. They are not intended to limit the embodiments of this utility model. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.
[0021] Example 1: Please refer to Figures 1 to 3 This utility model provides a technical solution: a foundation pit pumping and drainage unit for building construction, comprising: an inlet pipe 1, one end of the inlet pipe 1 is provided with a liquid inlet 2, the other end of the inlet pipe 1 is provided with a liquid outlet 3, a conical cylinder 4 is rotatably connected inside the inlet pipe 1, one end of the conical cylinder 4 is provided with a conical cylinder liquid inlet end 5, the other end of the conical cylinder 4 is provided with a conical cylinder liquid outlet end 6, a filter screen 7 is fixed in the conical cylinder liquid outlet end 6, a number of protrusions 14 are provided on the inner wall surface of the conical cylinder 4, and a large number of steel balls are filled in the conical cylinder 4.
[0022] In actual use, the mud lumps that enter the water inlet pipe 1 through the inlet 2 enter the conical cylinder 4 through the inlet end 5 of the conical cylinder. The mud lumps in the water are blocked by the filter screen 7. Then, under the rotation of the conical cylinder 4, the protrusions 14 on the inner wall surface of the conical cylinder 4 push the steel balls in the conical cylinder 4 to rotate together with the mud lumps. Since the size and distribution of the protrusions 14 are irregular, the mud lumps and steel balls also move irregularly in the conical cylinder 4, which causes frequent friction between the mud lumps and steel balls. During the friction process, the mud lumps are ground into mud and sand with a diameter smaller than the mesh size of the filter screen 7, so that they will no longer cause blockage to the submersible pump. Then, they pass through the mesh of the filter screen 7 together with the water and are discharged from the outlet 3. As the water enters the submersible pump, it is pumped out of the pit through the drain pipe of the submersible pump, avoiding the mud lumps from causing blockage to the water inlet pipe 1.
[0023] Example 2: Based on Example 1, in order to prevent the steel ball from falling out of the conical cylinder 4, the conical cylinder 4 is provided with one end of the conical cylinder inlet 5 close to the inlet 2. The conical cylinder 4 has a hollow frustum-shaped structure. The inner and outer wall diameters of the conical cylinder inlet 5 are smaller than the inner and outer wall diameters of the conical cylinder outlet 6. The diameter of the steel ball is larger than the mesh diameter of the filter screen 7.
[0024] The conical cylinder 4 is designed as a hollow truncated cone structure. The inner and outer diameters of the liquid inlet end 5 of the conical cylinder are smaller than the inner and outer diameters of the liquid outlet end 6 of the conical cylinder. Therefore, when water flows into the conical cylinder 4 from the liquid inlet end 5, the water flow exerts a pushing force on the steel ball, which is close to the filter screen 7. Since the diameter of the steel ball is larger than the mesh size of the filter screen 7, it will not come out of the conical cylinder 4 from the liquid outlet end 6, thus achieving the purpose of preventing the steel ball from coming out of the conical cylinder 4.
[0025] Example 3: Based on Example 2, in order to drive the conical cylinder 4 to rotate, a gear groove 9 is opened on the surface of the water inlet pipe 1, and an intermediate gear 10 is rotatably connected in the gear groove 9. A motor 12 is fixed on the surface of the water inlet pipe 1, and a drive gear 11 is fixed on the drive shaft of the motor 12. A driven gear 8 is sleeved and fixed on the outer wall of the conical cylinder 4. The driven gear 8 meshes with the intermediate gear 10, and the intermediate gear 10 meshes with the drive gear 11.
[0026] When the conical cylinder 4 needs to rotate, the motor 12 is turned on to drive the drive gear 11 to rotate. The drive gear 11 then drives the driven gear 8 to rotate through the intermediate gear 10 in the gear groove 9. The driven gear 8 then drives the conical cylinder 4 to rotate.
[0027] Example 4: Based on Example 3, in order to prevent untreated water from passing through the filter screen 7 from the gear groove 9 and into the water inlet pipe 1, sealed bearings 13 are provided at both ends of the side wall of the conical cylinder 4, and the outer ring of the sealed bearing 13 is fixed to the pipe wall of the water inlet pipe 1.
[0028] The two sets of sealed bearings 13 set at both ends of the conical cylinder 4 act as a barrier to the water in the inlet pipe 1, so that the water in the inlet pipe 1 can only flow through this section of the inlet pipe 1 through the conical cylinder 4, thereby achieving the purpose of preventing untreated water from passing through the gear groove 9 and the filter screen 7 into the inlet pipe 1.
[0029] Example 5: In order to protect the motor 12, a motor protection box 15 is fixed on the surface of the water inlet pipe 1, the motor 12 is fixed in the motor protection box 15, and the battery 16 is also fixed in the motor protection box 15.
[0030] The motor 12 is fixed in the motor protection box 15, thereby isolating the motor 12 from the outside world and preventing water from damaging the motor 12. At the same time, the battery 16 is also fixed in the motor protection box 15, which provides waterproof protection for the motor 16 and supplies power to the motor 12.
[0031] In actual use, the mud lumps that enter the water inlet pipe 1 through the inlet 2 then enter the conical cylinder 4 through the inlet end 5. The mud lumps in the water are blocked by the filter screen 7. Then, as the conical cylinder 4 rotates, the protrusions 14 on the inner wall surface of the conical cylinder 4 push the steel balls in the conical cylinder 4 to rotate together with the mud lumps. Since the size and distribution of the protrusions 14 are irregular, the mud lumps and steel balls also move irregularly in the conical cylinder 4, resulting in frequent friction between the mud lumps and steel balls. During the friction process, the mud... The soil clods are ground into mud and sand with a diameter smaller than the mesh size of filter screen 7, thus preventing clogging of the submersible pump. The mud and sand then pass through the mesh of filter screen 7 along with the water, and are discharged from drain port 3. As water enters the submersible pump, it is pumped out of the pit through the pump's drain pipe, preventing soil clods from clogging the inlet pipe 1. The conical cylinder 4 is designed as a hollow frustum-shaped structure. The inner and outer diameters of the inlet end 5 are smaller than the inner and outer diameters of the outlet end 6. Therefore, when water flows into the conical cylinder 4 from the inlet end 5,… The water flow exerts a pushing force on the steel balls, bringing them closer to the filter screen 7. Since the diameter of the steel balls is larger than the mesh size of the filter screen 7, they will not detach from the conical cylinder 4 at the discharge end 6, thus preventing the steel balls from falling out of the conical cylinder 4. When the conical cylinder 4 needs to rotate, the motor 12 starts, driving the drive gear 11 to rotate. The drive gear 11 then drives the driven gear 8 to rotate via the intermediate gear 10 in the gear groove 9. The driven gear 8 then drives the conical cylinder 4 to rotate. Two sets of sealed bearings 13 are installed at both ends of the conical cylinder 4. The conical tube 4 acts as a barrier to prevent water from flowing through the inlet pipe 1, allowing the water to flow only through this section of the inlet pipe 1. This prevents untreated water from passing through the gear groove 9 and the filter screen 7 into the inlet pipe 1. The motor 12 is fixed in the motor protection box 15, which isolates the motor 12 from the outside world and prevents water from damaging the motor 12. At the same time, the battery 16 is also fixed in the motor protection box 15, which provides waterproof protection for the motor 16 and supplies power to the motor 12.
[0032] 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 these 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 foundation pit dewatering unit for building construction, comprising: The water inlet pipe (1) has an inlet port (2) at one end and an outlet port (3) at the other end. The water inlet pipe (1) is characterized in that a conical cylinder (4) is rotatably connected inside the water inlet pipe (1). A conical cylinder inlet end (5) is provided at one end of the conical cylinder (4), and a conical cylinder outlet end (6) is provided at the other end of the conical cylinder (4). A filter screen (7) is fixed in the conical cylinder outlet end (6). Several sets of protrusions (14) are provided on the inner wall surface of the conical cylinder (4). The conical cylinder (4) is filled with a large number of steel balls.
2. The foundation pit pumping and drainage unit for building construction according to claim 1, characterized in that: The conical cylinder (4) has a conical cylinder inlet end (5) with one end close to the inlet port (2). The conical cylinder (4) has a hollow truncated cone structure. The inner and outer wall diameters of the conical cylinder inlet end (5) are smaller than the inner and outer wall diameters of the conical cylinder outlet end (6). The diameter of the steel ball is larger than the mesh aperture of the filter screen (7).
3. A foundation pit pumping and drainage unit for building construction according to claim 2, characterized in that: The tapered cylinder (4) has sealed bearings (13) at both ends of its sidewall. The outer ring of the sealed bearing (13) is fixed to the wall of the water inlet pipe (1).
4. A foundation pit pumping and drainage unit for building construction according to claim 3, characterized in that: Several groups of protrusions (14) are irregularly distributed on the inner wall of the conical cylinder (4).
5. A foundation pit pumping and drainage unit for building construction according to claim 4, characterized in that: The surface of the water inlet pipe (1) is provided with a gear groove (9), and an intermediate gear (10) is rotatably connected in the gear groove (9).
6. A foundation pit pumping and drainage unit for building construction according to claim 5, characterized in that: A motor (12) is fixed on the surface of the water inlet pipe (1), and a drive gear (11) is fixed on the drive shaft of the motor (12).
7. A foundation pit pumping and drainage unit for building construction according to claim 6, characterized in that: A passive gear (8) is fixedly fitted on the outer wall of the conical cylinder (4). The passive gear (8) meshes with the intermediate gear (10), and the intermediate gear (10) meshes with the driving gear (11).
8. A foundation pit pumping and drainage unit for building construction according to claim 7, characterized in that: A motor protection box (15) is fixed on the surface of the water inlet pipe (1), and the motor (12) is fixed in the motor protection box (15). A battery (16) is also fixed in the motor protection box (15).