Multi-effect evaporation crystallization classification and recovery device

Abstract

The utility model discloses a kind of multi-effect evaporation crystallization classification recovery devices, it is related to crystallization recovery technical field, including multi-effect evaporation crystallization mechanism, the multi-effect evaporation crystallization mechanism includes support frame, the inside fixed connection of support frame has the evaporation tank of internal setting steam cavity and material cavity, the surface of the evaporation tank is provided with heating steam input port;Vibration mechanism, the vibration mechanism includes storage tank.The utility model is provided with multi-effect evaporation crystallization mechanism, adopt communicating tube series evaporation tank, make previous effect secondary steam as next effect heating heat source, in the while of improving heat utilization rate, reducing energy consumption, through discharge pump, crystallization material is stably transported to classification mechanism, guarantee material processing continuity, the setting of vibration mechanism, through the spring elastic vibration of vibration motor drive receiving cage, cooperate with the layout of outer convex arc cage bottom and discharge hole, effectively disperse adhesion crystal and promote uniform unloading, avoid the screening jamming caused by density difference.

Description

Technical Field

[0001] This utility model relates to the field of crystallization recovery technology, specifically to a multi-effect evaporation crystallization classification and recovery device. Background Technology

[0002] In the fields of chemical engineering, pharmaceuticals, environmental protection, and resource recycling, multi-effect evaporation crystallization technology is often used to treat high-concentration solutions to achieve solute recovery and solvent recycling. For example, in scenarios such as mother liquor treatment in chemical production, wastewater desalination, and lithium extraction from salt lake brine, it is necessary to concentrate the solution by evaporation to allow the solute to crystallize and be recovered, in order to meet environmental protection requirements and improve resource utilization.

[0003] In actual production, when processing crystalline mixtures with various particle sizes and densities, the traditional recovery devices often lack a classification design, resulting in crystal recovery purity that cannot meet the requirements and causing certain inconveniences. Therefore, a multi-effect evaporation crystallization classification and recovery device is proposed. Utility Model Content

[0004] This invention provides a multi-effect evaporation crystallization classification and recovery device to solve the problem mentioned in the background art that when processing crystalline mixtures containing various particle sizes and density differences, the recovery devices of traditional devices often lack a classification design, resulting in the crystal recovery purity failing to meet the requirements.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0006] A multi-effect evaporation crystallization classification and recovery device includes a multi-effect evaporation crystallization mechanism, which includes a support frame. An evaporation tank with an internal steam chamber and a material chamber is fixedly connected inside the support frame. A heating steam inlet is provided on the surface of the evaporation tank. A vibration mechanism includes a storage tank. A spring is fixedly connected to the top of the storage tank. A receiving cage is fixedly connected to the top of the spring. A discharge hole is opened at the bottom of the inner cavity of the receiving cage. A classification mechanism includes a screening cage. Assembly screws are threadedly connected to the surface of the screening cage. A sieve plate is fixedly connected to the inner wall of the screening cage.

[0007] A further improvement of the present invention is that the vibration mechanism further includes a discharge trough, which is located below the discharge hole. The top of the discharge trough is fixedly connected to the bottom of the receiving cage. A vibration motor is provided at the bottom of the receiving cage. A drain port is provided on the surface of the storage tank.

[0008] A further improvement of this utility model is that: a gathering plate with a through hole in the middle is fixedly connected below the sieve plate and on the inner wall of the screening cage; and a temporary storage groove is fixedly connected to the upper surface of the screening cage.

[0009] A further improvement of this utility model is that: a discharge port is provided at the bottom of the inner cavity of the temporary storage tank, multiple sets of sorting mechanisms are provided, and the sieve holes of the sieve plate gradually decrease from top to bottom.

[0010] A further improvement of this utility model is that the bottom of the inner cavity of the receiving cage is set as an outwardly convex arc shape, and the top of the receiving cage is inserted into the bottom of the screening cage.

[0011] A further improvement of the present invention is that the multi-effect evaporation crystallization mechanism further includes a steam outlet, both the heating steam inlet and the steam outlet are connected to the interior of the steam chamber, and a feeding port is provided at the top of the inner cavity of the evaporator.

[0012] A further improvement of this utility model is that: a connecting pipe is provided at the top of the inner cavity of the evaporator, one end of the connecting pipe is connected to the heating steam inlet of another multi-effect evaporation crystallization mechanism, and a discharge pipe equipped with a discharge pump is provided at the bottom of the inner cavity of the evaporator, one end of the discharge pipe is located above the sorting mechanism.

[0013] Due to the adoption of the above technical solution, the technological progress achieved by this utility model compared to the prior art is as follows:

[0014] This invention provides a multi-effect evaporation crystallization classification and recovery device. Through the multi-effect evaporation crystallization mechanism, evaporators are connected in series via connecting pipes, allowing the secondary steam from the previous effect to serve as the heating source for the next effect. This improves heat utilization and reduces energy consumption. Simultaneously, a discharge pump stably delivers the crystallized material to the classification mechanism, ensuring continuous material processing. The vibration mechanism, driven by a vibration motor, uses a spring-driven elastic vibration of the receiving cage. Combined with the convex arc-shaped cage bottom and discharge hole layout, this effectively disperses adhered crystals and promotes uniform feeding, avoiding screening jams caused by density differences. The classification mechanism features multiple sets of sieve plates with progressively smaller apertures, combined with a gathering plate to guide the material through in an orderly manner, achieving gradient screening of crystals of different particle sizes. This significantly improves recovery purity and makes the device easier to use. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0016] Figure 2 This is a side view of the present invention.

[0017] Figure 3 This is a bottom view schematic diagram of the classification mechanism of this utility model;

[0018] Figure 4 This is a schematic diagram of the vibration mechanism structure of this utility model;

[0019] Figure 5 This is a schematic diagram of the classification mechanism of this utility model.

[0020] In the diagram: 11. Storage tank; 12. Spring; 13. Receiving cage; 14. Discharge hole; 15. Discharge trough; 16. Vibration motor; 17. Drain outlet; 21. Screening cage; 22. Assembly screws; 23. Screen plate; 24. Gathering plate; 25. Temporary storage tank; 26. Discharge outlet; 31. Support frame; 32. Evaporator; 33. Heating steam inlet; 34. Steam outlet; 35. Connecting pipe; 36. Discharge pipe. Detailed Implementation

[0021] The present invention will be further described in detail below with reference to embodiments:

[0022] Example 1

[0023] like Figure 1-5 As shown, this utility model provides a multi-effect evaporation crystallization classification and recycling device, including a multi-effect evaporation crystallization mechanism, which includes a support frame 31, an evaporator 32 with a steam chamber and a material chamber fixedly connected inside the support frame 31, and a heating steam inlet 33 on the surface of the evaporator 32; a vibration mechanism, which includes a storage tank 11, a spring 12 fixedly connected to the top of the storage tank 11, a receiving cage 13 fixedly connected to the top of the spring 12, and a discharge hole 14 opened at the bottom of the inner cavity of the receiving cage 13; and a classification mechanism, which includes a screening cage 21, an assembly screw 22 threadedly connected to the surface of the screening cage 21, and a screen plate 23 fixedly connected to the inner wall of the screening cage 21.

[0024] In this embodiment, the solution to be treated is injected into the material chamber through the top feed port of the evaporator 32, and the heating steam enters the steam chamber through the heating steam inlet 33 to indirectly heat the solution. The secondary steam generated by evaporation is transported through the connecting pipe 35 to the heating steam inlet 33 of the next effect evaporator 32 for recycling, so as to realize the heat utilization of multi-effect evaporation in stages.

[0025] Example 2

[0026] like Figure 1-5 As shown, based on Embodiment 1, this utility model provides a technical solution: Preferably, the vibration mechanism further includes a discharge trough 15, which is located below the discharge hole 14. The top of the discharge trough 15 is fixedly connected to the bottom of the receiving cage 13. A vibration motor 16 is provided at the bottom of the receiving cage 13. A drain port 17 is provided on the surface of the storage tank 11. A gathering plate 24 with a through hole in the middle is fixedly connected below the sieve plate 23 and on the inner wall of the screening cage 21. A temporary storage tank 25 is fixedly connected to the upper surface of the screening cage 21. A discharge port 26 is provided at the bottom of the inner cavity of the temporary storage tank 25. Multiple sets of sorting mechanisms are provided, and the sieve holes of the sieve plate 23 gradually decrease from top to bottom.

[0027] In this embodiment, the concentrated crystallized suspension is sent by the discharge pump through the discharge pipe 36 to the temporary storage tank 25 of the classification mechanism, and falls into the screening cage 21 through the discharge port 26. At the same time, the vibration motor 16 at the bottom of the receiving cage 13 is started, and the receiving cage 13 is driven to vibrate at high frequency through the spring 12, so that the classification mechanism vibrates at high frequency. Multiple sets of screen plates 23 with decreasing screen holes from top to bottom in multiple screening cages 21 perform gradient screening of materials.

[0028] Example 3

[0029] like Figure 1-5 As shown, based on Embodiment 1, this utility model provides a technical solution: Preferably, the bottom of the inner cavity of the receiving cage 13 is configured as an outwardly convex arc shape, the top of the receiving cage 13 is inserted into the bottom of the screening cage 21, the multi-effect evaporation crystallization mechanism also includes a steam output port 34, the heating steam input port 33 and the steam output port 34 are both connected to the inside of the steam chamber, the top of the inner cavity of the evaporator 32 is provided with a feeding port, the top of the inner cavity of the evaporator 32 is provided with a connecting pipe 35, one end of the connecting pipe 35 is connected to the heating steam input port 33 in another multi-effect evaporation crystallization mechanism, the bottom of the inner cavity of the evaporator 32 is provided with a discharge pipe 36 equipped with a discharge pump, and one end of the discharge pipe 36 is located above the sorting mechanism.

[0030] In this embodiment, the falling crystals are concentrated and guided to the center of the next sieve plate 23 by the gathering plate 24 below each sieve plate 23. Crystals of different particle sizes are finally discharged along the discharge port 26. The mother liquor enters the storage tank 11 and is discharged through the drain port 17. It can be returned to the evaporator 32 for recycling through the external pipeline. In addition, the sieve plate 23 of the screening cage 21 can be quickly replaced by the assembly screws 22. The bottom plug-in connection between the receiving cage 13 and the screening cage 21 facilitates maintenance. The whole set of equipment realizes efficient closed-loop processing from evaporation and concentration, vibration dispersion to multi-stage screening, which significantly improves the efficiency and purity of crystal recovery.

[0031] The working principle of this multi-effect evaporation crystallization classification and recovery device will be explained in detail below.

[0032] like Figure 1-5As shown, the solution to be treated is injected into the material chamber from the top feed port of the evaporator 32. Heating steam enters the steam chamber through the heating steam inlet 33 to indirectly heat the solution. The secondary steam generated by evaporation is transported to the heating steam inlet 33 of the next-effect evaporator 32 through the connecting pipe 35 for recycling, realizing the cascade utilization of heat from multi-effect evaporation. The concentrated crystallized suspension is sent by the discharge pump through the discharge pipe 36 to the temporary storage tank 25 of the classification mechanism, and falls into the screening cage 21 through the discharge port 26. At the same time, the vibration motor 16 at the bottom of the receiving cage 13 is started, which drives the receiving cage 13 to vibrate at high frequency through the spring 12, causing the classification mechanism to vibrate at high frequency. Multiple screening cages 21 The sieve plates 23 with multiple sets of sieve holes decreasing from top to bottom perform gradient screening of materials. The gathering plate 24 below each sieve plate 23 concentrates and guides the falling crystals to the center of the next sieve plate 23. Crystals of different particle sizes are finally discharged through the discharge port 26. The mother liquor enters the storage tank 11 and is discharged through the drain port 17. It can be returned to the evaporator 32 for recycling through an external pipeline. In addition, the sieve plates 23 of the screening cage 21 can be quickly replaced by the assembly screws 22. The bottom plug-in connection between the receiving cage 13 and the screening cage 21 facilitates maintenance. The whole set of equipment realizes efficient closed-loop processing from evaporation and concentration, vibration dispersion to multi-stage screening, which significantly improves the efficiency and purity of crystal recovery.

[0033] The present invention has been described in detail above. However, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, any modifications or improvements that do not depart from the spirit of the present invention are within the protection scope of the present invention.

Claims

1. A multi-effect evaporative crystallization fractionation recovery apparatus, characterized by: include A multi-effect evaporation crystallization mechanism, comprising a support frame (31), wherein an evaporator (32) having a steam chamber and a material chamber inside is fixedly connected inside the support frame (31), and a heating steam inlet (33) is provided on the surface of the evaporator (32); Vibration mechanism, the vibration mechanism includes a storage tank (11), a spring (12) is fixedly connected to the top of the storage tank (11), a receiving cage (13) is fixedly connected to the top of the spring (12), and a discharge hole (14) is opened at the bottom of the inner cavity of the receiving cage (13). The sorting mechanism includes a screening cage (21), the surface of which is threaded with assembly screws (22), and the inner wall of which is fixedly connected with a screen plate (23).

2. A multi-effect evaporation crystallization classification recovery device according to claim 1, characterized in that: The vibration mechanism also includes a discharge trough (15), which is located below the discharge hole (14). The top of the discharge trough (15) is fixedly connected to the bottom of the receiving cage (13). A vibration motor (16) is provided at the bottom of the receiving cage (13). A drain port (17) is provided on the surface of the storage tank (11).

3. A multi-effect evaporation crystallization classification recovery device according to claim 1, characterized in that: A gathering plate (24) with a through hole in the middle is fixedly connected to the inner wall of the screening cage (21) below the sieve plate (23), and a temporary storage groove (25) is fixedly connected to the upper surface of the screening cage (21).

4. A multi-effect evaporation crystallization classification recovery device according to claim 3, characterized in that: The bottom of the inner cavity of the temporary storage tank (25) is provided with a discharge port (26), the sorting mechanism is provided with multiple sets, and the sieve holes of the sieve plate (23) gradually decrease from top to bottom.

5. The multi-effect evaporation crystallization classification recovery apparatus according to claim 1, characterized in that: The bottom of the inner cavity of the receiving cage (13) is set to be an outwardly convex arc shape, and the top of the receiving cage (13) is inserted into the bottom of the screening cage (21).

6. The multi-effect evaporation crystallization classification and recovery device according to claim 1, characterized in that: The multi-effect evaporation crystallization mechanism also includes a steam outlet (34), and both the heating steam inlet (33) and the steam outlet (34) are connected to the inside of the steam chamber. A feeding port is provided at the top of the inner cavity of the evaporator (32).

7. The multi-effect evaporation crystallization classification and recovery device according to claim 6, characterized in that: The top of the inner cavity of the evaporator (32) is provided with a connecting pipe (35), one end of which is connected to the heating steam inlet (33) in another multi-effect evaporation crystallization mechanism. The bottom of the inner cavity of the evaporator (32) is provided with a discharge pipe (36) equipped with a discharge pump, one end of which is located above the sorting mechanism.

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