Chemical solution crystallization device

Abstract

The utility model relates to a chemical solution crystallizing device which comprises a crystallizing tank, a discharging barrel arranged at the bottom of the crystallizing tank, a rectangular filtering box arranged at the bottom of the discharging barrel, a liquid collecting box arranged at the bottom of the filtering box and a stirring mechanism arranged in the crystallizing tank, the top and the bottom of the outer wall of the stirring shaft are each provided with a pair of connecting rods, first spiral stirring blades are arranged between the two pairs of connecting rods and the stirring shaft, second spiral stirring blades are arranged on the outer wall of the stirring shaft, a plurality of wavy stirring plates are arranged on the lower portions of the upper connecting rods and the lower portions of the scraping plates, and electric heating wires are arranged in the stirring plates. And a solution circulating mechanism is arranged between the liquid collecting box and the crystallizing tank. According to the utility model, a solution is stirred more sufficiently, so that the solution is heated uniformly; the crystals and the solution can be separated in time when the crystallized solution is discharged, the crystals are convenient to collect and take out, and the residual solution is convenient to return to a crystallizing tank to be crystallized again.

Description

Technical Field

[0001] The utility model relates to the field of chemical product processing, in particular to a crystallization device for chemical solutions. Background Art

[0002] A crystallization device refers to a device that uses evaporation of part of the solvent to achieve supersaturation of the solution for crystal precipitation. Generally, crystallization devices adopt various types such as internal circulation type, external circulation type, evaporation type, fluidized bed type, etc.

[0003] The Chinese utility model patent with the publication number CN211158669U discloses a crystallization device for chemical solution crystallization. Through the combination of a discharge pipe, a heating pipe and a feed pipe, the chemical solution can be introduced into the crystallization tank. Through the gas guide pipe, the high-temperature water vapor generated during the crystallization operation of the chemical solution can be introduced into the preheating tank, and further, the chemical solution inside the heating pipe can be preheated, saving energy while improving the crystallization efficiency of the chemical solution. Through the combination of a liquid pump, a through pipe and a nozzle, the water generated by liquefying the water vapor in the preheating tank can be pumped out and introduced into the crystallization tank for cleaning operation, which is convenient, fast and water-saving. Through the combination of a rotating rod, a stirring rod and a scraping plate, while the stirring rod rotates to accelerate the crystallization of the chemical solution, the scraping plate can automatically clean the inner wall of the crystallization tank, preventing the crystals after evaporation from adhering to the bottom inner wall of the crystallization tank and facilitating the collection of crystals.

[0004] However, this solution still has the following problems: an electric heating wire is arranged at the lower part of the inner wall of the crystallization tank, and the stirring rod is straight, so the stirring direction of the solution is single and the problem of uneven heating is likely to occur. At the same time, when the crystallized solution is discharged, the crystals and the remaining solution cannot be separated in time and need to be separated separately, which is rather troublesome, and the remaining solution may still contain solutes that have not been completely crystallized and lacks a circulating crystallization measure. Summary of the Invention

[0005] The utility model aims to solve the deficiencies of the prior art and provides a crystallization device for chemical solutions.

[0006] To achieve the above object, the present utility model adopts the following technical solutions: A chemical solution crystallization device, comprising a crystallization tank, one end of the top of the crystallization tank is provided with a preheating tank, the bottom of the crystallization tank is provided with a discharge tube, the bottom of the discharge tube is provided with a rectangular filter tank, the bottom of the filter tank is provided with a liquid collection tank, one side of the top of the preheating tank is provided with a liquid inlet box, and one side of the inner bottom is provided with a liquid outlet box communicating with the inside of the crystallization tank. Inside the preheating tank, a number of serpentine liquid guide pipes are arranged side by side from front to back, and the top inlet of the liquid guide pipe is connected to the bottom of the liquid inlet box, and the bottom outlet is connected to the top of the liquid outlet box. A gas guide pipe is connected between the crystallization tank and the preheating tank; inside the inner wall of the crystallization tank, there is a heating cavity, and an electric heating pipe is laid in the heating cavity. Inside the crystallization tank, there is a stirring mechanism, and the stirring mechanism includes a stirring shaft. The top of the stirring shaft is rotatably connected to the inner top of the crystallization tank. At the top and bottom of the outer wall of the stirring shaft, there is a pair of connecting rods respectively. Between the two pairs of connecting rods and the stirring shaft, there is a first spiral stirring blade. On the outer wall of the stirring shaft, there is a second spiral stirring blade. At the outer ends of the connecting rods on the same side of the stirring shaft, there are scraping plates contacting the inner wall of the crystallization tank. Below the upper connecting rod and the scraping plate, there are a number of wavy stirring plates, and electric heating wires are arranged inside the stirring plates. At the top of the crystallization tank, there is a power mechanism for driving the stirring shaft to rotate; a valve is arranged inside the discharge tube, a drawer-type filter tank is slidably arranged inside the filter tank, and a solution circulation mechanism is arranged between the liquid collection tank and the crystallization tank.

[0007] Specifically, support rods connecting to the inner wall of the preheating tank are provided at the top and bottom of the liquid guide pipe.

[0008] Specifically, a water inlet is provided on one side of the preheating tank, a first pump body is provided on one side of the top of the crystallization tank, a water inlet pipe connecting to the bottom of one side of the preheating tank and a water outlet pipe connecting to the top of the crystallization tank are provided on the first pump body.

[0009] Specifically, a cross-shaped rod is provided at the top inner wall of the discharge tube, and the bottom of the stirring shaft is rotatably connected to the center of the cross-shaped rod.

[0010] Specifically, the power mechanism includes a motor. An inverted U-shaped mounting frame is provided at the top of the crystallization tank, the motor is mounted on the top of the mounting frame, and the top of the stirring shaft and the main shaft of the motor respectively penetrate into the mounting frame and are driven by a belt.

[0011] Specifically, sliding blocks are provided on both sides of the filter tank, sliding grooves corresponding to the sliding blocks are provided on the inner wall of the filter tank, the sliding blocks are slidably arranged in the sliding grooves, and a baffle is provided on the front side of the filter tank, and a handle is provided on the baffle.

[0012] Specifically, the solution circulation mechanism includes a second pump body. A liquid inlet pipe connecting to the liquid collection tank and a liquid return pipe connecting to the crystallization tank are provided on the second pump body, and a liquid discharge port is provided at the bottom of one side of the liquid collection tank.

[0013] The beneficial effects of the present utility model are as follows: Both the stirring plate and the inner wall of the crystallization tank of the present utility model are provided with a heating function. Moreover, the arrangement of the first spiral stirring blade and the second spiral stirring blade enables the solution to be stirred more fully, so that the solution is heated evenly. At the same time, the arrangement of the filter box, the filter tank, the liquid collection tank, and the solution circulation mechanism enables the crystal and the solution to be separated in time when the crystallized solution is discharged, and the crystal is convenient to collect and take out, and the remaining solution is convenient to return to the crystallization tank for recrystallization, and the overall use is flexible and convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a schematic diagram of the internal structure of the present utility model;

[0015] Figure 2 is a schematic diagram of the external structure of the present utility model;

[0016] In the figure: 1 - crystallization tank; 2 - preheating box; 3 - discharge tube; 4 - filter box; 5 - liquid collection tank; 6 - liquid inlet box; 7 - liquid outlet box; 8 - liquid guiding tube; 9 - support rod; 10 - air guiding tube; 11 - water inlet; 12 - first pump body; 13 - water inlet pipe; 14 - water outlet pipe; 15 - electric heating tube; 16 - stirring shaft; 17 - connecting rod; 18 - first spiral stirring blade; 19 - second spiral stirring blade; 20 - scraper; 21 - stirring plate; 22 - filter tank; 23 - cross-shaped rod; 24 - motor; 25 - mounting bracket; 26 - baffle; 27 - handle; 28 - second pump body; 29 - liquid return pipe; 30 - liquid discharge port;

[0017] The following will be described in detail with reference to the embodiments of the present utility model with reference to the accompanying drawings. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] The present utility model will be further described below in conjunction with the accompanying drawings and embodiments:

[0019] As Figure 1 - Figure 2 shown, a chemical solution crystallization device includes a crystallization tank 1. One end of the top of the crystallization tank 1 is provided with a preheating box 2. The bottom of the crystallization tank 1 is provided with a discharge tube 3. The bottom of the discharge tube 3 is provided with a rectangular filter box 4. The bottom of the filter box 4 is provided with a liquid collection tank 5. One side of the top of the preheating box 2 is provided with a liquid inlet box 6. One side of the inner bottom is provided with a liquid outlet box 7 communicating with the inside of the crystallization tank 1. Inside the preheating box 2, a number of serpentine liquid guiding tubes 8 are arranged side by side from front to back. Moreover, the top inlet of the liquid guiding tube 8 is connected to the bottom of the liquid inlet box 6, and the bottom outlet is connected to the top of the liquid outlet box 7. The top and bottom of the liquid guiding tube 8 are provided with support rods 9 connected to the inner wall of the preheating box 2. An air guiding tube 10 is connected between the crystallization tank 1 and the preheating box 2; One side of the preheating box 2 is provided with a water inlet 11. One side of the top of the crystallization tank 1 is provided with a first pump body 12. The first pump body 12 is provided with a water inlet pipe 13 connected to the bottom of one side of the preheating box 2, and a water outlet pipe 14 connected to the top of the crystallization tank 1; A number of fixing rods are connected between the liquid collection tank 5 and the crystallization tank 1 to enhance stability.

[0020] Inside the inner wall of the crystallization tank 1, there is a heating chamber, and an electric heating tube 15 is laid in the heating chamber. Inside the crystallization tank 1, there is a stirring mechanism. The stirring mechanism includes a stirring shaft 16. The top of the stirring shaft 16 is rotatably connected to the inner top of the crystallization tank 1. There is a valve in the discharge tube 3. At the top of the inner wall of the discharge tube 3, there is a cross-shaped rod 23. The bottom of the stirring shaft 16 and the center of the cross-shaped rod 23 are rotatably connected. At the top and bottom of the outer wall of the stirring shaft 16, there is a pair of connecting rods 17 respectively. Between the two pairs of connecting rods 17 and the stirring shaft 16, there is a first spiral stirring blade 18. On the outer wall of the stirring shaft 16, there is a second spiral stirring blade 19. At the outer end of the connecting rod 17 on the same side of the stirring shaft 16, there is a scraping plate 20 in contact with the inner wall of the crystallization tank 1. Below the upper connecting rod 17 and the scraping plate 20, there are several wavy stirring plates 21. Inside the stirring plate 21, there is an electric heating wire. At the top of the crystallization tank 1, there is a power mechanism for driving the stirring shaft 16 to rotate; the power mechanism includes a motor 24. At the top of the crystallization tank 1, there is an inverted U-shaped mounting frame 25. The motor 24 is installed on the top of the mounting frame 25. The top of the stirring shaft 16 and the main shaft of the motor 24 respectively penetrate into the mounting frame 25 and are driven by a belt.

[0021] Inside the filter box 4, there is a drawer-type filter slot 22 slidingly arranged. On both sides of the filter slot 22, there are sliders. On the inner wall of the filter box 4, there are chutes corresponding to the sliders. The sliders are slidably arranged in the chutes. And at the front side of the filter slot 22, there is a baffle 26. On the baffle 26, there is a handle 27.

[0022] Between the liquid collecting box 5 and the crystallization tank 1, there is a solution circulation mechanism. The solution circulation mechanism includes a second pump body 28. On the second pump body 28, there is a liquid inlet pipe connected to the liquid collecting box 5 and a return liquid pipe 29 connected to the crystallization tank 1. At the bottom on one side of the liquid collecting box 5, there is a liquid discharge port 30.

[0023] When the utility model works, the solution is dispersed into each liquid guiding pipe 8 through the liquid inlet box 6, and then enters the crystallization tank 1 through the liquid outlet box 7. The stirring shaft 16 rotates under the action of the motor 24. The first spiral stirring blade 18, the second spiral stirring blade 19, and the stirring plate 21 rotate to stir the solution in the crystallization tank 1. The scraping plate 20 scrapes the inner wall of the crystallization tank 1. The solution is stirred up and down, left and right in the crystallization tank 1, and the stirring is more sufficient. At the same time, both the inner wall of the crystallization tank 1 and the stirring plate 21 can be heated, so that the solution is heated more evenly. The hot gas evaporated enters the preheating box 2 through the air guide pipe 10 to preheat the liquid guiding pipe 8. When discharging liquid, the precipitated crystals are filtered out through the filter slot 22, and the remaining solution enters the liquid collecting box 5 and enters the crystallization tank 1 again through the second pump body 28 for secondary crystallization. When cleaning, the first pump body 12 pumps the water in the preheating box 2 into the crystallization tank 1, and just start the stirring shaft 16.

[0024] The stirring plate 21 of the present utility model and the inner wall of the crystallization tank 1 are both provided with a heating function. Moreover, the arrangement of the first spiral stirring blade 18 and the second spiral stirring blade 19 makes the solution stirring more sufficient, so that the solution is heated evenly. At the same time, the arrangement of the filter box 4, the filter tank 22, the liquid collection tank 5, and the solution circulation mechanism enables the crystal and the solution to be separated in time when the crystallized solution is discharged, and the crystal is convenient to collect and take out, and the remaining solution is convenient to return to the crystallization tank 1 for recrystallization, and the overall use is flexible and convenient.

[0025] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present utility model.

[0026] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present utility model, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically defined.

[0027] In the present utility model, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed", etc. should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection, an electrical connection or communication with each other; it may be directly connected, or indirectly connected through an intermediate medium, and it may be the internal communication of two elements or the interaction relationship between two elements, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0028] The above has described the present utility model exemplarily with reference to the drawings. Obviously, the specific implementation of the present utility model is not limited by the above methods. As long as various improvements are made by adopting the method concept and technical solution of the present utility model, or directly applied to other occasions without improvement, they are all within the protection scope of the present utility model.

Claims

1. A chemical solution crystallization device, comprising a crystallization tank (1), wherein a preheating box (2) is provided at one end of the top of the crystallization tank (1), characterized in that: A discharge barrel (3) is provided at the bottom of the crystallizer (1), a rectangular filter box (4) is provided at the bottom of the discharge barrel (3), a liquid collecting box (5) is provided at the bottom of the filter box (4), a liquid inlet box (6) is provided at one side of the top of the preheating box (2), a liquid outlet box (7) connected to the inside of the crystallizer (1) is provided at one side of the inner bottom, a plurality of serpentine liquid guide tubes (8) are arranged side by side from front to back inside the preheating box (2), the top inlet of the liquid guide tube (8) is connected to the bottom of the liquid inlet box (6), the bottom outlet is connected to the top of the liquid outlet box (7), and an air guide tube (10) is connected between the crystallizer (1) and the preheating box (2); a heating chamber is provided inside the inner wall of the crystallizer (1), an electric heating tube (15) is laid in the heating chamber, a stirring mechanism is provided inside the crystallizer (1), the stirring mechanism comprises a stirring shaft (16), the top of the stirring shaft (16) is rotatably connected to the crystallizer A pair of connecting rods (17) are provided at the top of the inner part of the tank (1), the top and bottom of the outer wall of the stirring shaft (16), a first spiral stirring blade (18) is provided between the two pairs of connecting rods (17) and the stirring shaft (16), a second spiral stirring blade (19) is provided on the outer wall of the stirring shaft (16), a scraper (20) is provided at the outer end of the connecting rod (17) on the same side of the stirring shaft (16) to contact the inner wall of the crystallization tank (1), a stirring plate (21) with a plurality of wavy lines is provided below the upper connecting rod (17) and the scraper (20), an electric heating wire is provided inside the stirring plate (21), and a power mechanism for driving the stirring shaft (16) to rotate is provided at the top of the crystallization tank (1); a valve is provided in the discharge barrel (3), a drawer-type filter tank (22) is slidably provided in the filter box (4), and a solution circulation mechanism is provided between the liquid collecting box (5) and the crystallization tank (1).

2. A chemical solution crystallization device according to claim 1, characterized in that: Support rods (9) connected to the inner wall of the preheating box (2) are provided at the top and bottom of the liquid guiding tube (8).

3. A chemical solution crystallization device according to claim 1, characterized in that: A water inlet (11) is provided on one side of the preheating box (2), a first pump body (12) is provided on one side of the top of the crystallization tank (1), and the first pump body (12) is provided with a water inlet pipe (13) connected to the bottom of one side of the preheating box (2), and a water outlet pipe (14) connected to the top of the crystallization tank (1).

4. A chemical solution crystallization device according to claim 1, characterized in that: A cross-shaped rod (23) is provided at the top of the inner wall of the discharge cylinder (3), and the bottom of the stirring shaft (16) is rotatably connected to the center of the cross-shaped rod (23).

5. A chemical solution crystallization device according to claim 1, characterized in that: The power mechanism comprises a motor (24); an inverted U-shaped mounting frame (25) is arranged on the top of the crystallization tank (1); the motor (24) is mounted on the top of the mounting frame (25); the top of the stirring shaft (16) and the main shaft of the motor (24) are respectively inserted into the mounting frame (25) and driven by a belt.

6. A chemical solution crystallization device according to claim 1, characterized in that: Slide blocks are provided on both sides of the filter tank (22), and slide grooves corresponding to the slide blocks are provided on the inner wall of the filter box (4). The slide blocks are slidably arranged in the slide grooves, and a baffle plate (26) is provided on the front side of the filter tank (22), and a handle (27) is provided on the baffle plate (26).

7. A chemical solution crystallization device according to claim 1, characterized in that: The solution circulation mechanism comprises a second pump body (28), the second pump body (28) is provided with a liquid inlet pipe connected to the liquid collecting box (5) and a liquid return pipe (29) connected to the crystallization tank (1), and a liquid discharge port (30) is provided at the bottom of one side of the liquid collecting box (5).

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