A homogenizing device for dehydrating river and lake bottom mud

Abstract

The present invention discloses a homogenizing device for dewatering river and lake bottom mud, comprising a tank body, an agitator, a water flow distributor, a first disturber and a second disturber. The tank body is a cylindrical body with an upper opening, and a material discharge port is formed on one side of the lower part; the agitator is arranged in the tank body, and a reduction motor provides rotational power; at least three water flow distributors are arranged in the circumferential direction of the inner wall of the tank body; the first disturber is arranged at the outer end edge of the agitator, and is used to strengthen the disturbance of the liquid at the bottom of the tank body; the second disturber is arranged at the bottom center of the tank body, and disturbs the solid phase material accumulated at the bottom. The device stirs fully, is clean and environmentally friendly, fast and efficient, and can stir river and lake bottom mud and powdered medicine fully, and there is no residue in the stirring center.

Description

Technical Field

[0001] The invention relates to the technical field of ecological dredging of rivers and lakes, and in particular to a homogenizing device for dehydrating river and lake bottom mud. Background Art

[0002] In the field of ecological dredging and management of rivers and lakes, the plate and frame dewatering process of sediment is widely used. The process mainly includes: flocculation reaction, homogenization reaction, plate and frame filter pressing, residual water treatment and other links. Among them, the homogenization reaction is crucial and directly affects the subsequent dewatering efficiency. Generally speaking, in the plate and frame dewatering field of river and lake sediment, a certain area of ​​​​site is required to arrange the homogenization tank for the mixing reaction of sediment and conditioning agents. This method increases the floor area of ​​​​the project, and at the same time, the environmental protection performance on site is poor, and the homogenization tank needs to be cleaned regularly. Therefore, there is an urgent need for a homogenization device that can not only fully homogenize the sediment and the agent, but also save floor space and is highly environmentally friendly. Summary of the invention

[0003] The purpose of the present invention is to provide a homogenizing device for dewatering river and lake bottom mud which saves floor space and has high environmental protection.

[0004] To this end, the technical solution of the present invention is as follows:

[0005] A homogenizing device for dewatering river and lake bottom mud comprises a tank body, an agitator, a water flow distributor, a first disturber and a second disturber, wherein the tank body is a cylinder with an upper opening and a material discharge port formed on one side of the lower part; the agitator is arranged in the tank body and is provided with rotational power by a reduction motor; at least three water flow distributors are arranged in the circumferential direction of the inner wall of the tank body, the lower half of the water flow distributor is used to promote the upward flow of liquid objects near the bottom wall of the tank body, and the upper half of the water flow distributor is used for the downward flow of liquid objects near the upper wall of the tank body; the first disturber is arranged at the outer end edge of the agitator to strengthen the disturbance of the liquid at the bottom of the tank body; the second disturber is arranged at the bottom center of the tank body to disturb the solid phase material accumulated at the bottom.

[0006] Preferably, the water flow distributor is an S-shaped plate, vertically mounted on the inner wall of the tank, and the distance between its inner edge and the inner wall of the tank is 2-5 mm. The rotation direction of the agitator makes the circumferential liquid flow direction toward the lower opening side of the S shape.

[0007] More preferably, the water flow distributor is composed of two flat plates with semicircular cross-sections, and the shapes of the two sides of the S-shaped baffle are adapted to the shape of the inner wall of the tank; the angle between the highest point and the lowest point of the S-shaped baffle and the vertical direction is 25 to 35°, and the preferred angle is 30°.

[0008] The first disturber is a rectangular baffle with a width of 5 to 10 cm and a length of 10 to 15 cm. The rectangular baffle is vertically installed at the outer end of each stirring blade of the disturber and is perpendicular to the radial direction.

[0009] Preferably, the second disturber has three symmetrically arranged blades, and the blades are vertically arranged in the shape of plates and their length directions are parallel to the bottom of the tank body, and can rotate with the flow of materials.

[0010] The reduction motor is mounted on a frame, the frame is mounted on a connecting plate, the connecting plate is mounted on a bridge, and the bridge is mounted at the top opening of the tank. In addition, an overflow port is provided on one side of the upper part of the tank; and a reinforcing rib is installed on the outer side of the bottom of the tank.

[0011] In one embodiment of the present invention, the diameter of the tank body is 5m and the height is 4m; the agitator adopts an axial propeller blade with a stirring diameter of 2m, and the distance between the bottom of the stirring blade and the bottom of the tank body is 0.8m; the semicircular diameter of the S-shaped baffle cross-section is 150cm, the distance between the two sides of the S-shaped baffle is 45cm, the height of the S-shaped baffle is 260cm, and the distance from the bottom of the tank body is 60cm.

[0012] Each blade of the second perturbator has a width of 5 to 10 cm, a length of 50 to 75 cm, and a thickness of 0.2 cm.

[0013] In small-scale sediment dewatering projects, the homogenizing device for river and lake sediment dewatering of the present invention can replace the existing homogenizing tank. It has the advantages of sufficient stirring, fast and efficient, and wide application range. It can fully stir river and lake sediment and powdered reagents, and there is no residue in the stirring center. The details are as follows:

[0014] 1. Three water flow distributors are evenly arranged along the circumference of the inner wall of the tank, and their shape is S-shaped. The lower half can promote the upward flow of liquid objects near the side wall of the tank, and the upper half can promote the downward flow of liquid objects near the side wall of the tank, thereby strengthening the axial flow state in the mixing tank, changing the single vortex state of the material in the tank, and improving the mixing degree of the powder agent and the bottom mud. It overcomes the disadvantage of poor mixing effect caused by reduced stirring force near the tank in the prior art.

[0015] 2. The agitator adopts axial propeller blades, and a radial vertical baffle is fixed on the outer end of the agitator blade, which improves the flow state at the bottom of the agitator tank and reduces the accumulation of solid materials at the bottom center of the agitator tank.

[0016] 3. The second disturber installed at the bottom of the tank can rotate with the flow of materials, further reducing the accumulation of solid materials at the bottom center of the mixing tank. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of a homogenizing device for dewatering river and lake sediments of the present invention;

[0018] Figure 2 It is a schematic diagram of the cross-sectional structure of the water flow distributor in the figure.

[0019] In the figure:

[0020] 1. Reduced motor 2. Coupling 3. Frame 4. Connecting plate 5. Bridge

[0021] 6. Agitator 7. Tank 8. Water distributor 9. Stirring blade 10. First disturbance device

[0022] 11. Second perturbator 12. Overflow port 13. Reinforcement rib DETAILED DESCRIPTION

[0023] The structure of the homogenizing device for dewatering river and lake sediments of the present invention is described in detail below with reference to the accompanying drawings.

[0024] Figure 1 The present invention shows an embodiment of a homogenizing device for dewatering river and lake sediments. As shown in the figure, the device comprises: a tank 7, an agitator 6, a water flow distributor 8, a first disturber 10 and a second disturber 11.

[0025] Specifically, the tank body 7 is a cylinder with an opening at the top, and a material discharge port (not shown) is formed on one side of the lower part. The agitator 6 is arranged in the tank body, and the reduction motor 1 provides rotational power. In this embodiment, three water flow distributors 8 are evenly arranged in the circumferential direction of the inner wall of the tank body 7. The lower half of the water flow distributor 8 is used to promote the upward flow of liquid objects near the bottom wall of the tank body, and the upper half is used for the downward flow of liquid objects near the upper wall of the tank body. The first disturber 10 is arranged at the outer end edge of the agitator to strengthen the disturbance of the liquid at the bottom of the tank body. The second disturber 11 is arranged at the bottom center of the tank body to disturb the solid phase material accumulated at the bottom.

[0026] like Figure 2 As shown, the water flow distributor 8 is an S-shaped plate, which is vertically installed on the inner wall of the tank body, and the distance between its inner edge and the inner wall of the tank body is 2-5mm, so as to facilitate the passage of materials close to the inner wall. The rotation direction of the agitator 6 makes the liquid flow direction in the circumferential direction toward the lower opening side of the S shape. This structure enables the lower half of the water flow distributor 8 to promote the upward flow of liquid objects near the side wall of the tank body, and the upper half to promote the downward flow of liquid objects near the side wall of the tank body, thereby strengthening the axial flow state in the stirring tank.

[0027] The S-shaped plate is composed of two flat plates with semicircular cross-sections, and the shapes of the two side edges of the S-shaped plate are adapted to the shape of the inner wall of the tank body (the entire inner edge is close to the inner wall of the tank body); the angle between the highest point and the lowest point of the S-shaped baffle and the vertical direction is 25 to 35°. In this embodiment, the angle is 30°.

[0028] The first disturber 10 is a rectangular baffle with a width of 5 to 10 cm and a length of 10 to 15 cm. The rectangular baffle is vertically installed at the outer end of each stirring blade of the disturber and is perpendicular to the radial direction.

[0029] The second disturber 11 has three symmetrically arranged blades, which are vertically arranged in the shape of plates and whose length direction is parallel to the bottom of the tank body, and can rotate with the flow of materials. Each blade of the second disturber is 5 to 10 cm wide and 50 to 75 cm long. In this embodiment, its thickness is 0.2 cm.

[0030] The reduction motor 1 is mounted on a frame 3, the frame 3 is mounted on a connecting plate 4, the connecting plate 4 is mounted on a bridge 5, and the bridge 5 is mounted at the top opening of the tank body 7. In addition, an overflow port 12 is provided on one side of the upper part of the tank body 7; a reinforcing rib 13 is also installed on the outer side of the bottom of the tank body 7. The reduction motor 1 is connected to the stirring shaft of the stirrer through a coupling 2.

[0031] In this embodiment, the diameter of the tank body is 5m and the height is 4m; the agitator adopts an axial propeller blade with a stirring diameter of 2m, and the distance between the bottom of the stirring blade and the bottom of the tank body is 0.8m; the semicircular diameter of the S-shaped baffle cross-section is 150cm, the distance between the two sides of the S-shaped baffle is 45cm, the height of the S-shaped baffle is 260cm, and the distance from the bottom of the tank body is 60cm.

[0032] When in use, the mud and the medicine enter the tank from the top, and the agitator is started. Under the action of the agitator, the first and second disturbance devices, the mud and the medicine are fully and evenly mixed.

Claims

1. A homogenizing device for dewatering river and lake sediments, characterized in that: The invention comprises a tank, a stirrer, a water flow distributor, a first disturber and a second disturber, The tank body is a cylindrical body with an opening at the top, and a material discharge port is formed on one side of the lower part; The agitator is arranged in the tank body and is provided with rotational power by a reduction motor; At least three water flow distributors are provided in the circumferential direction of the inner wall of the tank body, the lower half of the water flow distributor is used to promote the upward flow of liquid objects near the bottom wall of the tank body, and the upper half of the water flow distributor is used to promote the downward flow of liquid objects near the upper wall of the tank body; The first disturber is arranged at the outer end edge of the stirrer to enhance the disturbance of the liquid at the bottom of the tank; The second disturber is arranged at the bottom center of the tank body to disturb the solid phase material accumulated at the bottom; The first disturber is a rectangular baffle with a width of 5-10 cm and a length of 10-15 cm. The rectangular baffle is vertically installed at the outer end of each stirring blade of the disturber and is perpendicular to the radial direction; The second disturber has three symmetrically arranged blades, each of which is in the shape of a vertically arranged plate and has a length direction parallel to the bottom of the tank body, and can rotate with the flow of the material; The water flow distributor is an S-shaped baffle, the diameter of the tank body is 5m and the height is 4m; the agitator adopts an axial propeller blade, the stirring diameter is 2m, and the distance between the bottom of the stirring blade and the bottom of the tank body is 0.8m; the semicircular diameter of the S-shaped baffle cross section is 150cm, the distance between the two sides of the S-shaped baffle is 45cm, the height of the S-shaped baffle is 260cm, and the distance from the bottom of the tank body is 60cm; each blade of the second disturber is 5~10cm wide, 50~75cm long, and 0.2cm thick.

2. The homogenizing device for dewatering river and lake sediment according to claim 1, characterized in that: The water flow distributor is vertically installed on the inner wall of the tank, and the distance between its inner edge and the inner wall of the tank is 2-5mm. The rotation direction of the agitator makes the liquid flow direction in the circumferential direction toward the lower opening side of the S-shaped baffle.

3. The homogenizing device for dewatering river and lake sediment according to claim 2, characterized in that: The water flow distributor is composed of two flat plates with semicircular cross-sections, and the shapes of its two sides are adapted to the inner wall shape of the tank body; the angle between the line connecting the highest point and the lowest point of the S-shaped baffle and the vertical direction is 25-35°.

4. The homogenizing device for dewatering river and lake sediment according to claim 3, characterized in that: The angle between the line connecting the highest point and the lowest point of the S-shaped baffle and the vertical direction is 30°.

5. The homogenizing device for dewatering river and lake sediment according to claim 1, characterized in that: The reduction motor is mounted on a frame, the frame is mounted on a connecting plate, the connecting plate is mounted on a bridge frame, and the bridge frame is mounted at the top opening of the tank body.

6. The homogenizing device for dewatering river and lake sediment according to claim 1, characterized in that: An overflow port is also arranged on one side of the upper part of the tank body.

7. The homogenizing device for dewatering river and lake sediment according to claim 1, characterized in that: A reinforcing rib is installed on the outer side of the bottom of the tank body.

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