Heat recovery lift agitator

Abstract

The utility model discloses a kind of heat recovery promotion mixing tanks, including solution tank, and heat preservation layer and heat preservation protective layer are respectively arranged from inside to outside on the outer peripheral wall of solution tank, heat tracing coil is arranged in heat preservation layer, and heat tracing coil spiral winding is on the outer peripheral wall of solution tank, the volute is arranged at the central bottom of solution tank, and through hole is respectively arranged on the bottom peripheral wall of volute, and motor reducer is installed in the top of solution tank by horizontal support, the lower end of motor reducer connecting stirring promotion shaft, and the lower end of stirring promotion shaft extends to the volute by packing seal, and lifting stirring impeller is arranged at the lower end of stirring promotion shaft in volute, one outlet pipeline is connected on the top side of volute, and outlet pipeline is inclined to extend the tank wall of solution tank, and circulation pipeline is connected on the outlet pipeline outside solution tank, and circulation pipeline upper end extends to the upper portion of solution tank by bending, and blow-off vent valve is arranged at the bottom of solution tank.

Description

Technical Field

[0001] This utility model pertains to solid-liquid mixing equipment, specifically a heat recovery lifting and stirring tank. Background Technology

[0002] Traditional mixers, as a common mixing device, are widely used in chemical, food, and pharmaceutical industries. They primarily utilize a motor-driven rotating shaft, which in turn rotates blades or paddles within a container. During rotation, the blades or paddles exert shearing, impact, and convection forces on the materials, achieving rapid mixing and uniform dispersion. The mixed material is then pumped to the next process unit. Summary of the Invention

[0003] The purpose of this invention is to provide a heat recovery lifting mixing tank. By optimizing the structure and design of the mixer, the mixing efficiency is greatly improved, and the traditional material conveying pump is eliminated. The device is simple to operate, consumes little energy, and has low production costs.

[0004] The specific technical solution is as follows: A heat recovery lifting and stirring tank includes a solution tank, a heating coil, a stirring and lifting shaft, a motor reducer, an outlet pipe, and a circulation pipe. The outer peripheral wall of the solution tank is provided with an insulation layer and an insulation protection layer from the inside out. The heating coil is installed inside the insulation layer and is coiled around the outer peripheral wall of the solution tank. The lower end of the heating coil is the heat source inlet, and the upper end is the heat source outlet. The volute is located at the center bottom of the solution tank, and through holes are provided on the bottom peripheral wall of the volute. The motor reducer is installed inside the top of the solution tank via a horizontal support. The lower end of the shaft of the speed reducer is connected to the stirring and lifting shaft. The lower end of the stirring and lifting shaft extends into the volute through a packing seal. Inside the volute, the lower end of the stirring and lifting shaft is equipped with a stirring impeller. An outlet pipe is connected to one side of the top of the volute. The outlet pipe extends upwards out of the wall of the solution tank. A circulation pipe is connected to the outlet pipe on the outside of the solution tank. The upper end of the circulation pipe extends upwards and bends into the upper part of the solution tank. A pneumatic circulation control valve is installed on the circulation pipe, and a pneumatic outlet control valve is installed on the outlet pipe. A sludge discharge and venting valve is installed at the bottom of the solution tank.

[0005] The materials in the mixing tank are heated by a recyclable heat source (such as steam, hot water, or heat transfer oil) to accelerate the dissolution and mixing process. A motor-driven reducer drives the lifting impeller to rotate and stir the mixture. At this time, the material outlet control valve is closed and the circulation pipeline control valve is opened. The mixture is then lifted from the bottom to the top of the tank by the lifting impeller, achieving mixing in both circumferential and vertical directions. After stirring is complete, the material outlet control valve is opened again and the circulation pipeline control valve is closed, and the material is then moved to the next process unit.

[0006] Compared with the prior art, the advantages of this utility model are: compared with traditional stirring, it realizes mixing motion in two dimensions, namely the circumferential direction and the vertical direction, resulting in higher mixing efficiency; after stirring, it can be lifted to the target position without pumping; it can operate efficiently, stably and continuously; it has built-in insulation to prevent heat loss; and its simple structure makes it easy to disassemble, install and maintain. Attached Figure Description

[0007] Figure 1 This is a perspective view of the present utility model; Figure 2 This is a schematic diagram of the front cross-sectional structure of this utility model; Figure 3 This is a perspective view of the stirring impeller of this utility model.

[0008] In the diagram: 1. Motor reducer; 2. Agitator lifting shaft; 3. Horizontal support; 4. Solution tank; 5. Heating coil; 6. Insulation layer; 7. Insulation protection layer; 8. Drain valve; 9. Volute; 10. Lifting agitator impeller; 11. Outlet pipeline; 12. Pneumatic outlet control valve; 13. Circulation pipeline; 14. Pneumatic circulation pipeline control valve. Detailed Implementation

[0009] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0010] like Figure 1 , 2 As shown in Figure 3, a heat recovery lifting and stirring tank includes a solution tank 4, a heating coil 5, a stirring and lifting shaft 2, a motor reducer 1, an outlet pipe 11, and a circulation pipe 13. The outer peripheral wall of the solution tank 4 is provided with an insulation layer 6 and an insulation protection layer 7 from the inside out. The heating coil 5 is installed inside the insulation layer 6, and is coiled and wound around the outer peripheral wall of the solution tank 4. The lower end of the heating coil 5 is the heat source inlet, and the upper end is the heat source outlet. The volute 9 is located at the center bottom of the solution tank 4, and through holes 15 are provided on the bottom peripheral wall of the volute 9. The motor reducer 1 is installed inside the top of the solution tank 4 via a horizontal support 3. The lower end of the shaft of the reducer 1 is connected to the stirring and lifting shaft 2. The lower end of the stirring and lifting shaft 2 extends into the volute 9 through a packing seal. The stirring and lifting shaft 2 inside the volute 9 is equipped with a lifting and stirring impeller 10. One side of the top of the volute 9 is connected to an outlet pipe 11. The outlet pipe 11 extends upward and out of the tank wall of the solution tank 4. The outlet pipe 11 outside the solution tank 4 is connected to a circulation pipe 13. The upper end of the circulation pipe 13 extends upward and bends into the upper part of the solution tank 4. A pneumatic circulation pipe control valve 14 is installed on the circulation pipe 13, and a pneumatic outlet control valve 12 is installed on the outlet pipe 11. A sludge discharge and venting valve 8 is installed at the bottom of the solution tank 4.

[0011] The heat recovery referred to in this utility model refers to the recovery and utilization of waste heat in the entire process unit, with the aim of accelerating the material dissolution and mixing process. The bottom flange interface of the heating coil 5 is the heat source inlet, and the top flange interface is the heat source outlet. An insulation layer 6 is installed on the outside of the coil, and a protective layer 7 is installed outside the insulation layer.

[0012] The volute 9 is fixed to the bottom of the solution tank 4, and the through hole 15 at the bottom of the volute allows the liquid medium to enter; a packing seal is installed at the top of the volute to ensure the lifting head.

[0013] The lifting impeller 10 in this invention has the synergistic effect of centrifugal force and lift: Lifting agitator impellers generate centrifugal force and lift through rotation, causing materials to circulate and be lifted within the tank. The core mechanism utilizes the impeller's rotation to create axial flow of material, drawing it in from the bottom and throwing it out, thus achieving a lifting effect. For example, lifting agitator impellers typically have larger diameters, ranging from 240mm to 1000mm, and moderate rotational speeds of 211r / min to 530r / min to ensure sufficient centrifugal force and lift.

[0014] The relationship between adjusting the clearance of the impeller 10 and the lifting height is improved: The gap between the impeller and the base plate must be strictly controlled within the range of 6-10mm to optimize material intake and lifting efficiency. An excessively large gap will reduce suction capacity, while an excessively small gap may cause mechanical wear or blockage. This design feature directly affects the lifting height; for example, the maximum lifting height can reach 1.2m.

[0015] Enhance the disc-vortex structure and negative pressure suction of the impeller 10: Elevator impellers often employ a disc-vortex design, whose blade structure generates strong axial dispersion capabilities during rotation, creating a negative pressure zone in the hollow part of the impeller to provide kinetic energy for material intake. This design is particularly suitable for scenarios where the material's gravity flow difference is insufficient or pumping is not advisable, directly achieving material conveying through the impeller's suction capacity.

[0016] Enhance the adaptability and versatility of the mixing impeller 10: The lifting agitator impeller combines mixing and conveying functions, making it suitable for material handling needs of varying scales. For example, the TBJ series lifting agitator tanks have effective volumes ranging from 0.9m³ to 20.5m³ and lifting heights from 350mm to 750mm, meeting diverse process requirements. Furthermore, its structural design facilitates maintenance, and users can adjust parameters such as impeller clearance and rotational speed according to actual needs.

[0017] In summary, the lifting impeller 10 achieves efficient lifting and uniform mixing of materials through centrifugal force, lift, fluid guide assistance, and negative pressure suction. Its design flexibility and adaptability make it widely used in mining, chemical and other fields.

[0018] Equipment operation process: The motor reducer 1 drives the lifting and stirring shaft 2 and the lifting and stirring impeller 10 to rotate and stir. At this time, the pneumatic outlet control valve 12 is closed and the pneumatic circulation pipeline control valve 14 is opened. The mixed material is then lifted from the bottom of the tank to the top of the tank by the lifting and stirring impeller 10, realizing the mixing motion in both the circumferential and vertical directions. After stirring is completed, the pneumatic outlet control valve 12 is opened and the pneumatic circulation pipeline control valve 14 is closed, and the material is then lifted to the next process unit.

Claims

1. A heat recovery lifting and stirring tank, comprising a solution tank (4), a heating coil (5), a stirring and lifting shaft (2), a motor reducer (1), an outlet pipeline (11), and a circulation pipeline (13), characterized in that: The outer peripheral wall of the solution tank (4) is provided with an insulation layer (6) and an insulation protection layer (7) from the inside out. A heat tracing coil (5) is installed inside the insulation layer (6). The heat tracing coil (5) is coiled around the outer peripheral wall of the solution tank (4). The lower end of the heat tracing coil (5) is the heat source inlet, and the upper end of the heat tracing coil (5) is the heat source outlet. A volute (9) is installed at the bottom center of the solution tank (4). Through holes (15) are provided on the bottom peripheral wall of the volute (9). A motor reducer (1) is installed in the top of the solution tank (4) through a horizontal bracket (3). The lower end of the shaft of the motor reducer (1) is connected to the stirring and lifting shaft (2). The lower end of the stirring and lifting shaft (2) The packing seal extends into the volute (9). The stirring and lifting shaft (2) inside the volute (9) is equipped with a lifting and stirring impeller (10) at the lower end. An outlet pipe (11) is connected to one side of the top of the volute (9). The outlet pipe (11) extends upward and out of the tank wall of the solution tank (4). A circulation pipe (13) is connected to the outlet pipe (11) outside the solution tank (4). The upper end of the circulation pipe (13) extends upward and bends to the upper part of the solution tank (4). A pneumatic circulation pipe control valve (14) is installed on the circulation pipe (13), and a pneumatic outlet control valve (12) is installed on the outlet pipe (11). A sludge discharge valve (8) is installed at the bottom of the solution tank (4).

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