Tail water dredging device

Abstract

The utility model provides a tail water desilting device which comprises a desilting pump, a fixing base of an annular structure is installed on the outer side of a shell of the desilting pump, annular grooves are formed in the upper end face and the lower end face of the fixing base respectively, and limiting bodies matched with the annular grooves are arranged on a rotating sleeve, so that movable connection is formed, and the rotating sleeve is installed on the outer side of the shell of the desilting pump in a rotatable mode. A stirring assembly is mounted on the outer side of the rotating sleeve, and a rotating driving mechanism is arranged between the fixed seat and the rotating sleeve; in the working process, the rotating sleeve is driven to rotate through the rotating driving mechanism, then the stirring assembly is driven to rotate along with the rotating sleeve, sludge around the shell of the dredging pump can be stirred in an all-around mode, and compared with the prior art, the stirring range is expanded through the stirring assembly, and the stirring efficiency is greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of hydropower station equipment technology, and in particular to a tailrace dredging device. Background Technology

[0002] A hydroelectric power station, also known as a hydropower plant, is a facility that converts the potential and kinetic energy of water into electrical energy. Its basic production process involves drawing water from a high point in a river or other reservoir, using the water's pressure or flow velocity to drive a turbine, converting gravitational potential and kinetic energy into mechanical energy. The turbine then drives a generator, converting the mechanical energy into electrical energy. After a hydroelectric power station is built, repeated flood discharges, scouring, and damage to the downstream river channel, along with the effects of various hydraulic structures and topography, cause significant siltation in the tailrace and downstream river channel. This raises the tailrace water level, affecting the power output of the generating units.

[0003] The implementation of tailrace dredging at hydropower stations effectively lowers the riverbed elevation, ensuring smooth flood discharge and further enhancing flood control capabilities. Furthermore, the lowered riverbed allows for a relative increase in the height of existing protective dikes, raising flood control standards. Simultaneously, the rise in tailrace level significantly impacts the power generation head; timely dredging of silt in the tailrace channel ensures a more stable and smooth flow of water for power generation, ultimately improving power generation efficiency. Existing dredging equipment uses a mixing device bolted to the outside of the dredging pump casing, limiting its working range to specific areas and preventing mixing of other areas around the pump casing. Utility Model Content

[0004] The purpose of this utility model is to provide a tailwater dredging device. A rotary drive mechanism drives a rotating sleeve to rotate, which in turn causes the agitator to rotate with the sleeve, thereby agitating the sludge around the casing of the dredging pump. Compared to existing technologies, this expands the agitation range and significantly improves agitation efficiency. To achieve the above technical features, this utility model achieves its purpose as follows:

[0005] A tailwater dredging device includes a dredging pump. A fixed seat with an annular structure is installed on the outer side of the housing of the dredging pump. A rotating sleeve is rotatably installed on the outer side of the fixed seat. A rotation drive mechanism is provided between the fixed seat and the rotating sleeve. The rotation drive mechanism is used to drive the rotating sleeve to rotate. An agitator is installed on the outer side of the rotating sleeve.

[0006] The stirring assembly comprises multiple sets, which are evenly distributed along the circumference of the rotating sleeve.

[0007] The dredging pump is equipped with a lifting ring on top.

[0008] The rotary drive mechanism includes an internal gear ring disposed inside the rotating sleeve, and a drive gear meshing with the internal gear ring is mounted on the fixed base. The drive gear is connected to the output shaft of the first motor.

[0009] The first motor is a submersible motor.

[0010] The stirring assembly includes a shaft mounted on the outside of the rotating sleeve, and a plurality of stirring rods are arranged on the circumference of the shaft.

[0011] The rotating sleeve is provided with a mounting base on its outer side, the shaft is rotatably connected to the mounting base, and the output shaft of the second motor is connected to the shaft.

[0012] The second motor is a submersible motor.

[0013] The present invention has the following beneficial effects:

[0014] 1. A fixed base is installed on the outside of the dredging pump. A rotating sleeve is rotatably installed on the outside of the fixed base. The rotating sleeve is driven to rotate by a rotary drive mechanism, which in turn drives the agitator to rotate with the rotating sleeve. This allows the sludge around the casing of the dredging pump to be agitated. Compared with the existing technology, this expands the agitation range and greatly improves the agitation efficiency.

[0015] 2. A mounting base is provided on the outside of the rotating sleeve, and the shaft is rotatably connected to the mounting base. The output shaft of the second motor is connected to the shaft. The second motor drives the shaft to rotate, which further improves the working efficiency of the stirring assembly. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0017] Figure 1 An external view of a tailwater dredging device provided in an embodiment of this utility model;

[0018] Figure 2 A partial structural cross-sectional view of a tailwater dredging device provided in an embodiment of this utility model;

[0019] Figure 3 Provided for the embodiments of this utility model Figure 2 A partial view in the middle;

[0020] Figure 4 This is a schematic diagram of the internal structure of the rotating sleeve provided in an embodiment of the present utility model;

[0021] Figure 5 A schematic diagram of the structure of the fixing base provided in the embodiment of this utility model;

[0022] In the diagram: 1. Dredging pump; 2. Fixed base; 2a. Ring groove; 2b. Mounting groove; 3. Rotating sleeve; 3a. Limiting body; 4. Agitator assembly; 4a. Shaft; 5. Lifting ring; 6. Internal gear ring; 7. Drive gear; 8. First motor; 9. Mounting base; 10. Second motor. Detailed Implementation

[0023] The embodiments of this utility model will be further described below with reference to the accompanying drawings.

[0024] See appendix Figure 1-5 A tailwater dredging device includes a dredging pump 1. A ring-shaped fixed seat 2 is installed on the outer side of the casing of the dredging pump 1. The upper and lower end faces of the fixed seat 2 are respectively provided with ring grooves 2a. A rotating sleeve 3 is provided with a limiting body 3a that cooperates with the ring grooves 2a, thereby forming a movable connection, so that the rotating sleeve 3 is rotatably installed on the outer side of the casing of the dredging pump 1. An agitator 4 is installed on the outer side of the rotating sleeve 3. A rotary drive mechanism is provided between the fixed seat 2 and the rotating sleeve 3. During operation, the rotary drive mechanism drives the rotating sleeve 3 to rotate, thereby driving the agitator 4 to rotate with the rotating sleeve 3. Compared with the prior art, the agitator in this application can perform all-round agitation treatment on the sludge around the casing of the dredging pump 1, expanding the agitation range and greatly improving the agitation efficiency.

[0025] In one embodiment, the stirring assembly 4 includes multiple sets, which are evenly distributed along the circumference of the rotating sleeve 3. The stirring efficiency is improved by setting multiple sets of stirring assemblies 4.

[0026] In one embodiment, the top of the dredging pump 1 is equipped with a lifting ring 5 for the transportation of the device of this application.

[0027] In one embodiment, the rotary drive mechanism includes an internal gear ring 6 disposed inside the rotating sleeve 3. The fixed base 2 has a mounting groove 2b on its circumference. A drive gear 7 that meshes with the internal gear ring 6 is installed in the mounting groove 2b. The drive gear 7 is connected to the output shaft of the first motor 8. The first motor 8 drives the drive gear 7 to rotate, thereby driving the internal gear ring 6 and the rotating sleeve 3 to rotate. This drives the stirring assembly 4 installed on the outside of the rotating sleeve 3 to rotate and stir the sludge around the housing of the dredging pump 1. The above structure is simple, stable and reliable.

[0028] In one implementation, the first motor 8 is a submersible motor with an IP68 protection rating.

[0029] In one embodiment, the stirring assembly 4 includes a shaft 4a mounted on the outside of the rotating sleeve 3, and a plurality of stirring rods 4b are arranged on the circumference of the shaft 4a.

[0030] In one embodiment, the rotating sleeve 3 is provided with a mounting base 9 on its outer side, the shaft 4a is rotatably connected to the mounting base 9, and the output shaft of the second motor 10 is connected to the shaft 4a. By setting the second motor, the shaft 4a is driven to rotate, which further improves the working efficiency of the stirring assembly.

[0031] In one embodiment, the second motor 10 is a submersible motor with an IP68 protection rating.

Claims

1. A device for dredging tailwater, characterized in that: The device includes a dredging pump, wherein a ring-shaped fixed base is installed on the outer side of the pump housing, and a rotating sleeve is rotatably installed on the outer side of the fixed base. A rotation drive mechanism is provided between the fixed base and the rotating sleeve, and the rotation drive mechanism is used to drive the rotating sleeve to rotate. An agitator is installed on the outer side of the rotating sleeve.

2. A device for dredging tail water according to claim 1, characterized in that: The stirring assembly comprises multiple sets, which are evenly distributed along the circumference of the rotating sleeve.

3. A device for dredging tail water according to claim 1, characterized in that: The dredging pump is equipped with a lifting ring on top.

4. The tailwater dredging device according to claim 1, characterized in that: The rotary drive mechanism includes an internal gear ring disposed inside the rotating sleeve, and a drive gear meshing with the internal gear ring is mounted on the fixed base. The drive gear is connected to the output shaft of the first motor.

5. The tailwater dredging device according to claim 4, characterized in that: The first motor is a submersible motor.

6. A device for dredging tail water according to claim 1, characterized in that: The stirring assembly includes a shaft mounted on the outside of the rotating sleeve, and a plurality of stirring rods are arranged on the circumference of the shaft.

7. A device for dredging tail water according to claim 6, characterized in that: The rotating sleeve is provided with a mounting base on its outer side, the shaft is rotatably connected to the mounting base, and the output shaft of the second motor is connected to the shaft.

8. A device for dredging tail water according to claim 7, characterized in that: The second motor is a submersible motor.

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