Settling tank energy-saving device

Abstract

The utility model discloses an energy-saving device for a settling tank, which comprises a chute, a propulsive liquid pump and a liquid inlet driving system, the liquid inlet driving system is in transmission connection with the propulsive liquid pump and is used for driving the propulsive liquid pump, the chute is connected with the side wall of a central feeding cylinder in the settling tank, and one end of the chute close to the wall of the chute is connected with a self-overflow pipe and an underflow pipe. The propulsive liquid pump is installed on the outer side of the chute wall, clear liquid flows into a propulsive liquid inlet of the propulsive liquid pump, a propulsive liquid outlet of the propulsive liquid pump is connected with the side wall of one side of the chute, the clear liquid is pushed into the chute through the propulsive liquid pump, the top of the chute located on the outer side of the chute wall is in a closed state, and the top of the chute located on the inner side of the chute wall is in an open state. And a flocculating agent is added into the chute in the open state. According to the utility model, a flocculating agent, underflow, overflow and dilution clear liquid can be more fully mixed in the chute box body, the mixing effect of materials is enhanced, and the chute box body is compact in overall structural design, convenient to use and high in practicability.

Description

Technical Field

[0001] This utility model relates to the field of solid-liquid separation equipment technology, and in particular to an energy-saving device for settling tanks. Background Technology

[0002] A settling tank is an industrial device that uses the principle of gravity settling to achieve solid-liquid separation. It is mainly used to settle and concentrate solid particles in suspension or to clarify liquid. Its core function is to separate solid particles from liquid in suspension through natural or enhanced settling, and finally obtain concentrated underflow (high concentration of solids) and clarified overflow (clear liquid).

[0003] The existing settling tank feeding system is a Venturi-type two-stage feed pipe. This feed pipe is installed 2m below the liquid surface. Red mud and washing liquid are pumped into the first half, then jetted into the second half after narrowing. Simultaneously, the clear liquid from the narrowing section is carried into the second half for dilution. The diluted mixture then enters the central feed cylinder of the settling tank to complete the red mud settling and separation. However, it has the following disadvantages: 1. The secondary dilution flow rate is uncontrollable; when the red mud and overflow flow rates are low, the jet may not reach the second half of the pipe; 2. When the red mud and overflow flow rates are particularly high, the clear liquid carried in by the jet may be insufficient; 3. The installation position is too low, which is not conducive to the adjustment of the settling tank. Utility Model Content

[0004] The purpose of this invention is to provide an energy-saving device for settling tanks, thereby solving the aforementioned problems in the prior art.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0006] This utility model discloses an energy-saving device for a settling tank, comprising a chute, a propulsion pump, and a liquid inlet drive system. The liquid inlet drive system is connected to the propulsion pump for driving the propulsion pump. The chute is connected to the side wall of the central feed cylinder in the settling tank. One end of the chute near the tank wall is connected to an overflow pipe and an underflow pipe. The propulsion pump is installed on the outside of the tank wall, and the propulsion inlet of the propulsion pump receives clear liquid. The propulsion outlet of the propulsion pump is connected to one side wall of the chute, and the clear liquid is pushed into the chute by the propulsion pump. The top of the chute located on the outside of the tank wall is in a closed state, and the top of the chute located on the inside of the tank wall is in an open state. Flocculant is added to the open chute.

[0007] Furthermore, the sidewalls of the settling tank are respectively provided with overflow pipes and trough pipes, the top of the settling tank is provided with a power system, the output end of the power system extends into the settling tank and is connected to a rake, and the bottom interface of the conical cylinder of the settling tank is connected to an underflow pump.

[0008] Furthermore, the top surface of the chute is at the same horizontal level, and the bottom surface of the chute located inside the chute wall is a sloping structure or a cone shape.

[0009] Furthermore, the total length of the settling tank energy-saving device is 9.6-10m, the width is 0.8-1.3m, the height of the chute at the connection position with the central feed cylinder is 1.9-2.3m, and the height of the chute at the connection position with the tank wall is 1.7m.

[0010] Furthermore, the chute is a three-section distributed load-bearing structure. The top of the connection point between the central feed cylinder and the chute is connected to the outer H-beam of the settling tank via a hanger. The middle of the chute is connected to the radial beam at the top of the settling tank via a hanger. The bottom of the chute located on the outer side of the tank wall and the propellant pump are connected to the large platform in the middle of the settling tank via H-beams.

[0011] Furthermore, the bottom of the chute is trapezoidal or inverted triangular.

[0012] Furthermore, the connection between the propellant inlet and the side wall of the chute is a propellant inlet, which is a square hole with a width of 0.8m and a height of 0.5m.

[0013] Furthermore, the bottom steel plate of the propellant inlet is 20cm lower than the bottom of the overflow pipe.

[0014] Furthermore, a square hole with a height of 1.2m is provided at the connection between the chute and the central feed cylinder.

[0015] Furthermore, the bottom of the propellant inlet is 20-30cm higher than the propellant outlet.

[0016] Compared with the prior art, the beneficial technical effects of this utility model are as follows:

[0017] This utility model's energy-saving settling tank device, through the setting of a chute, a propulsion pump, and a liquid inlet drive system, allows flocculant, underflow, overflow, and diluted clear liquid to mix more thoroughly within the extended chute tank. Furthermore, the trapezoidal or inverted triangular bottom of the chute further enhances the mixing effect of the materials. This solves the problems of uncontrollable secondary dilution flow and insufficient clear liquid brought in by the jet in existing settling tank feeding systems. The overall structure is compact, easy to use, and highly practical. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the settling tank structure in the settling tank energy-saving device of this utility model;

[0020] Figure 2 This is a schematic diagram of the main structure of the settling tank energy-saving device of this utility model;

[0021] Figure 3 This is a top view of the energy-saving device for the settling tank of this utility model;

[0022] Figure 4 This is a schematic diagram of the flow of clear liquid in the settling tank energy-saving device of this utility model;

[0023] Figure 5 This is a structural schematic diagram of the length of the propulsion pump shaft in the settling tank energy-saving device of this utility model.

[0024] Explanation of reference numerals in the attached drawings: 1. Liquid inlet drive system; 2. Overflow pipe; 3. Bottom of overflow pipe; 4. Underflow pipe; 5. Propellant pump; 6. Central feed cylinder; 7. Tank wall; 8. Sluice; 9. Propellant inlet; 10. Propellant outlet; 11. Stainless steel blade; 12. Propellant pump shaft length; 13. Settling tank; 14. Overflow pipe; 15. Outflow pipe; 16. Rake; 17. Underflow pump; 18. Flocculant. Detailed Implementation

[0025] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0026] In the description of this utility model, it should be understood that the terms "length", "width", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0027] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0028] like Figures 1 to 5 As shown, the energy-saving device for the settling tank in this embodiment includes a chute 8, a propulsion pump 5, and a liquid inlet drive system 1. The liquid inlet drive system 1 is connected to the propulsion pump 5 for driving it. The chute 8 is connected to the side wall of the central feed cylinder 6 inside the settling tank 13. The chute 8 is designed to be elongated, allowing for more thorough mixing of flocculant, underflow, overflow, and diluted clear liquid within the chute 8. Preferably, as shown... Figure 3 As shown, the chute 8 is tangentially connected to the central feed cylinder 6.

[0029] And, as Figure 2 As shown, the end of the chute 8 near the tank wall 7 is connected to an overflow pipe 2 and an underflow pipe 4. The propulsion pump 5 is installed on the outside of the tank wall 7, with the propulsion inlet 9 of the propulsion pump 5 receiving clear liquid, and the propulsion outlet 10 of the propulsion pump 5 connected to one side wall of the chute 8. Figure 4 As shown, the clear liquid is pushed into the chute 8 by the propulsion pump 5. The propulsion pump 5 injects the external clear liquid into the side wall of the chute 8 at a certain pressure, forming a fluid shear force, breaking the static mixing mode of flocculant and material, improving the uniformity of flocculant diffusion, and at the same time diluting the high-concentration underflow and reducing viscosity resistance.

[0030] Meanwhile, the top of the chute 8 located on the outside of the tank wall 7 is closed to prevent splashing when the clear liquid is injected, while the top of the chute 8 located on the inside of the tank wall 7 is open, and flocculant 18 is added to the open chute 8.

[0031] Specifically, such as Figure 1 As shown, the sidewalls of the settling tank 13 are respectively provided with an overflow pipe 14 and a trough pipe 15. A power system is provided at the top of the settling tank 13. The output end of the power system extends into the settling tank 13 and is connected to a rake 16. The bottom interface of the conical cylinder of the settling tank 13 is connected to an underflow pump 17.

[0032] In this embodiment, the top surface of the chute 8 is at the same horizontal height, and the bottom surface of the chute 8 located inside the chute wall 7 is a sloping structure or a cone shape. The sloping structure or cone shape of the bottom surface of the chute 8 helps the material to flow down the slope under the action of gravity, while promoting the mixing and reaction between materials.

[0033] Specifically, the total length of the settling tank energy-saving device is 9.6-10m and the width is 0.8-1.3m to ensure that the device can accommodate enough material and meet the processing requirements. The height of the chute 8 connected to the central feed cylinder 6 is 1.9-2.3m, and the height of the chute 8 connected to the tank wall 7 is 1.7m, which helps the material to flow and mix smoothly in the chute 8.

[0034] Furthermore, the chute 8 is a three-section distributed load-bearing structure with a total weight of approximately 5 tons. The top of the connection point between the central feed cylinder 6 and the chute 8 is connected to the top of the settling tank 13 via a hanger rod. The middle of the chute 8 is connected to the top radial beam of the settling tank 13 via a hanger rod. The bottom of the chute 8 located on the outer side of the tank wall 7 and the propulsion pump 5 are connected to the middle large platform of the settling tank 13 via an I-beam. By adopting a three-section distributed load-bearing structure, the weight of the chute 8 is evenly distributed to the main frame of the settling tank 13, avoiding deformation caused by local stress concentration and reducing the interference of vibration on the mixing process.

[0035] To enhance the mixing effect of materials, the bottom of the chute 8 is set as a trapezoid or inverted triangle to promote the uniform distribution and reaction of materials in the chute 8. Preferably, the box structure of the chute 8 is made of 6mm steel plate, and the outside of the chute 8 is reinforced with angle steel to prevent deformation. The two sides of the chute 8 are reinforced with H-beams to ensure its structural strength and stability.

[0036] The connection between the propellant inlet 9 and the side wall of the chute 8 is the propellant inlet. The propellant inlet is a square hole with a width of 0.8m and a height of 0.5m. Furthermore, the bottom steel plate of the propellant inlet is 20cm lower than the bottom of the overflow pipe 3 to avoid direct interference between the clear liquid and the overflow pipe.

[0037] In addition, a square hole with a height of 1.2m is provided at the connection between the chute 8 and the central feed cylinder 6 to facilitate the smooth entry and mixing of materials.

[0038] In this embodiment, the bottom of the propellant inlet 9 is 20-30cm higher than the propellant outlet 10. At this time, gravity can be used to assist the flow of the clear fluid, reduce pumping energy consumption, and avoid energy waste caused by clear fluid backflow.

[0039] like Figure 5 As shown, the overall length of the propulsion pump shaft 12 is no more than 2 meters. Specifically, the length of the propulsion pump shaft 12 includes a frame shaft of 0.8m, a riser of 0.2m, an overflow of 0.6m, a propulsion port of 0.2m, and an impeller length of 0.2m inside the propulsion cylinder. This configuration can make the liquid propulsion force stronger, avoid shaft swaying, and make the operation more stable.

[0040] The liquid inlet drive system 1 includes a motor, a reducer, a shaft, stainless steel blades 11 and a frame. The stainless steel blades 11 are stainless steel downward pressure blades, which are set at the upper part of the propellant inlet. At this time, the stainless steel downward pressure blades are located at the upper part of the propellant inlet. The negative pressure generated by the rotation of the blades accelerates the intake of the clear liquid, and the reverse pressure action forms a directional jet, which enhances the momentum exchange between the clear liquid and the material in the chute 8.

[0041] Optionally, the diameter of the settling tank 13 is 24-30m and the height is 18-24m, and the diameter of the central feed cylinder 6 inside the settling tank 13 is 6-8m and the height is 4.5m.

[0042] This utility model's energy-saving settling tank device, through the setting of a chute, a propulsion pump, and a liquid inlet drive system, allows flocculant, underflow, overflow, and diluted clear liquid to mix more thoroughly within the extended chute tank. Furthermore, the trapezoidal or inverted triangular bottom of the chute further enhances the mixing effect of the materials. This solves the problems of uncontrollable secondary dilution flow and insufficient clear liquid brought in by the jet in existing settling tank feeding systems. The overall structure is compact, easy to use, and highly practical.

[0043] The embodiments described above are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.

Claims

1. A settling tank energy saving device, characterized by, The device comprises a chute, a propellant liquid pump and a liquid inlet driving system, the liquid inlet driving system is in transmission connection with the propellant liquid pump and is used for driving the propellant liquid pump, the chute is connected with the side wall of the central feeding cylinder in the settling tank, one end of the chute close to the tank wall is connected with a self-overflow pipe and a underflow pipe, the propellant liquid pump is installed outside the tank wall, the propellant liquid inlet of the propellant liquid pump flows into clear liquid, the propellant liquid outlet of the propellant liquid pump is connected with the side wall of the chute, the clear liquid is pushed into the chute by the propellant liquid pump, the top of the chute outside the tank wall is in a closed state, the top of the chute inside the tank wall is in an open state, and the chute in the open state is added with a flocculating agent.

2. A device for saving energy in a settling tank according to claim 1, characterized in that The settling tank is provided with an overflow pipe and a chute pipe on the side wall respectively, the top of the settling tank is provided with a power system, the output end of the power system extends into the settling tank and is connected with a rake machine, and the conical cylinder bottom of the settling tank is connected with an underflow pump.

3. A device for saving energy in a settling tank according to claim 1, characterized in that The top surface of the chute is at the same horizontal height, and the bottom surface of the chute inside the tank wall is in a slope structure or a conical shape.

4. A device for saving energy in a settling tank according to claim 3, characterized in that The total length of the energy-saving device of the settling tank is 9.6-10 m, the width is 0.8-1.3 m, the height of the chute at the connecting position with the central feeding cylinder is 1.9-2.3 m, and the height of the chute at the connecting position with the tank wall is 1.7 m.

5. A device for saving energy in a settling tank according to claim 1, characterized in that, The chute is dispersedly supported in three sections, the top of the connecting position of the chute and the central feeding cylinder is connected with the top tank outer I-beam of the settling tank through a hanger, the middle part of the chute is connected with the top radial beam of the settling tank through a hanger, and the bottom of the chute outside the tank wall and the propellant liquid pump are connected with the middle large platform of the settling tank through an I-beam.

6. A device for saving energy in a settling tank according to claim 1, characterized in that The bottom of the chute is trapezoidal or inverted triangular.

7. A device for saving energy in a settling tank according to claim 1, characterized in that The connecting position of the propellant liquid inlet and the side wall of the chute is a propellant liquid inlet, and the propellant liquid inlet is a square hole with a width of 0.8 m and a height of 0.5 m.

8. A device for saving energy in a settling tank according to claim 7, characterized in that The bottom steel plate of the propellant liquid inlet is 20 cm lower than the bottom of the overflow pipe.

9. A device for saving energy in a settling tank according to claim 1, characterized in that, A square hole with a height of 1.2 m is arranged at the connecting position of the chute and the central feeding cylinder.

10. A device for saving energy in a settling tank according to any one of claims 1-9, characterized in that The bottom of the propellant liquid inlet is 20-30 cm higher than the propellant liquid outlet.

11. A device for saving energy in a settling tank according to any one of claims 1-9, characterized in that The shaft length of the propellant liquid pump is within 2 meters.

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