Crystallizer

Abstract

The utility model relates to a crystallizer which comprises a tank body, a heat exchange tube is arranged in the tank body, an annular heat exchange cavity is arranged between the inner wall and the outer wall of the heat exchange tube, and the heat exchange tube is further connected with a water inlet and a water outlet which are both communicated with the heat exchange cavity. When the heat exchanger is used, a heat exchange medium enters the heat exchange cavity from the water inlet and flows out from the water outlet, so that the heat exchange tube is heated / cooled, the heat exchange tube exchanges heat with materials, the inner surface area and the outer surface area of the heat exchange tube are larger, the heat exchange effect is better, and crystals on the surface of the heat exchange tube are also convenient to remove.

Description

Technical Field

[0001] The utility model relates to the field of crystallization, in particular to the technical field of crystallizers, and specifically refers to a crystallizer. Background Art

[0002] A crystallizer is a kind of container. Traditional crystallizers have jackets on their walls or coils inside to heat or cool the solution. Crystallizers can be used as evaporation crystallizers or cooling crystallizers. To increase the intensity of crystal production, a stirrer can be added to the container. Crystallizers can be used for continuous or intermittent operation.

[0003] However, when viscous materials need to be crystallized, if a traditional crystallizer with a coil inside is used, crystals can easily crystallize onto the outer surface of the coil, causing the gaps between the coils to be blocked by crystals, making it difficult to clean, and the materials at the bottom of the tank are difficult to be fully mixed by the agitator. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a crystallizer, which uses a heat exchange tube to replace a serpentine tube, thereby facilitating the cleaning of crystals on the heat exchange tube, and simultaneously adding a stirring fan to stir the material on the bottom of the tank body, thereby facilitating full mixing of the material.

[0005] The utility model is realized through the following technical scheme: a crystallizer, comprising a tank body, wherein a heat exchange tube is arranged in the tank body, an annular heat exchange cavity is opened between the inner wall and the outer wall of the heat exchange tube, and the heat exchange tube is also connected with a water inlet and a water outlet both connected with the heat exchange cavity.

[0006] When the utility model is in use, the heat exchange medium enters the heat exchange cavity from the water inlet and flows out from the water outlet, thereby heating / cooling the heat exchange tube, allowing the heat exchange tube to exchange heat with the material. The inner and outer surface areas of the heat exchange tube are larger, the heat exchange effect is better, and the crystals on the surface of the heat exchange tube are also easy to remove.

[0007] Preferably, a guide plate is further provided in the heat exchange chamber, and the guide plate extends spirally upward.

[0008] This preferred solution increases the contact area between the heat exchange medium and the heat exchange tube by setting the guide plate, and provides a guiding effect on the flow of the heat exchange medium.

[0009] Preferably, two stirring rods which are arranged opposite to each other and extend downward are fixedly connected to the stirring shaft in the tank body, the bottom ends of the stirring rods extend outwardly at an angle, and a stirring fan is also fixedly connected to the inner side surface of the stirring rods, and a plurality of through holes are formed on the stirring fan.

[0010] This preferred solution facilitates stirring of the material on the bottom surface of the tank body by providing a stirring rod and a stirring fan.

[0011] Preferably, the inner bottom surface of the tank body is provided with a protrusion located directly below the stirring shaft and protruding upward, the tank body is provided with two discharge ports, the two discharge ports are evenly arranged along the circumference of the protrusion, and the protrusion is located between two stirring fans.

[0012] When this preferred solution is in use, since the discharge port in the existing tank body is located directly below the stirring shaft, and the stirring fan cannot stir the material directly below the stirring shaft during stirring, the setting of the protrusion allows the material directly below the stirring shaft to flow along the protrusion toward the circumference of the protrusion, and then flow into the stirring range of the stirring fan, thereby facilitating the stirring of the material. At the same time, the setting of the two discharge ports also facilitates the rapid discharge of the material.

[0013] Preferably, the bottom surface of the stirring fan is adapted to and extends onto the inner bottom surface of the tank body, and the discharge port is located between the stirring fan and the protrusion.

[0014] When the preferred solution is in use, the stirring fan is extended to the inner bottom surface of the tank body, so as to facilitate sufficient stirring of the material located on the bottom surface of the tank body.

[0015] Preferably, the top surface of the protrusion is a spherical surface, the spherical surface and the inner bottom surface of the tank body are a plurality of arc surfaces arranged in sequence along the circumferential direction and connected, and the discharge port is located at the connection between the arc surface and the inner bottom surface of the tank body.

[0016] This preferred solution provides a smooth transition between the protrusion and the bottom surface of the tank body by setting the arc surface, thereby facilitating the material to fall from the protrusion to the bottom surface of the tank body. By setting the position of the discharge port, the discharge port is located at the lowest point of the bottom surface of the tank body, thereby reducing the residual material on the bottom surface of the tank body.

[0017] The beneficial effects of the utility model are as follows: the heat exchange tube is used to replace the serpentine tube, and the heat exchange medium enters the heat exchange chamber from the water inlet and flows out from the water outlet, thereby realizing heating / cooling the heat exchange tube, making the heat exchange tube and the material exchange heat, the inner and outer surface areas of the heat exchange tube are larger, the heat exchange effect is better, and the crystals on the surface of the heat exchange tube are also easy to remove; since the discharge port in the existing tank body is located directly below the stirring shaft, and the stirring fan cannot stir the material directly below the stirring shaft during stirring, the protrusion is set so that the material directly below the stirring shaft flows along the protrusion to the circumference of the protrusion, and then flows into the stirring range of the stirring fan, which is convenient for stirring the material. At the same time, the setting of the two discharge ports is also convenient for rapid discharge of the material. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of the utility model;

[0019] As shown in the figure:

[0020] 1. Tank body, 2. Heat exchange tube, 3. Guide plate, 4. Stirring shaft, 5. Water outlet, 6. Water inlet, 7. Stirring rod, 8. Stirring fan, 9. Protrusion, 10. Discharge port. DETAILED DESCRIPTION

[0021] In order to clearly illustrate the technical features of this solution, this solution is described below through a specific implementation method.

[0022] See attached Figure 1 The utility model is a crystallizer, comprising a tank body 1, wherein a heat exchange tube 2 is arranged in the tank body 1, an annular heat exchange cavity is opened between the inner wall and the outer wall of the heat exchange tube 2, and the heat exchange tube 2 is also connected with a water inlet 6 and a water outlet 5 both connected with the heat exchange cavity, the water inlet 6 is located below the water outlet 5, and a guide plate 3 is also arranged in the heat exchange cavity, and the guide plate 3 extends spirally upward.

[0023] Two stirring rods 7 are fixedly connected to the stirring shaft 4 in the tank body 1. The bottom ends of the stirring rods 7 extend outwardly at an angle. A stirring fan 8 is also fixedly connected to the inner side surface of the stirring rods 7. The stirring fan 8 is provided with a plurality of through holes.

[0024] The inner bottom surface of the tank body 1 is provided with a protrusion 9 located directly below the stirring shaft 4 and protruding upward, the top surface of the protrusion 9 is a spherical surface, and the spherical surface and the inner bottom surface of the tank body 1 are a plurality of arc surfaces arranged in sequence along the circumferential direction. The tank body 1 is provided with two discharge ports 10, and the two discharge ports 10 are evenly arranged along the circumference of the protrusion 9. The protrusion 9 is located between the two stirring fans 8, and the discharge port 10 is located at the connection between the arc surface and the inner bottom surface of the tank body 1.

[0025] The bottom surface of the stirring fan 8 is adapted to the inner bottom surface of the tank body 1 and extends to the inner bottom surface of the tank body 1 , and the discharge port 10 is located between the stirring fan 8 and the protrusion 9 .

[0026] When the utility model is in use, the heat exchange tube 2 is used to replace the serpentine tube. The heat exchange medium enters the heat exchange chamber from the water inlet 6 and flows out from the water outlet 5, thereby heating / cooling the heat exchange tube 2, allowing the heat exchange tube 2 to exchange heat with the material. The inner and outer surface areas of the heat exchange tube 2 are larger, the heat exchange effect is better, and the crystals on the surface of the heat exchange tube 2 are also easy to remove. Since the discharge port 10 in the existing tank body 1 is located directly below the stirring shaft 4, and the stirring fan 8 cannot stir the material directly below the stirring shaft 4 during stirring, the protrusion 9 is set to make the material directly below the stirring shaft 4 flow along the protrusion 9 toward the circumference of the protrusion 9, and thus flow into the stirring range of the stirring fan 8, thereby facilitating the stirring of the material. At the same time, the setting of the two discharge ports 10 is also convenient for the rapid discharge of the material.

[0027] Of course, the above description is not limited to the above examples. The technical features not described in the present invention can be achieved by or by adopting the existing technology, which will not be repeated here. The above embodiments and drawings are only used to illustrate the technical scheme of the present invention and are not limitations of the present invention. The present invention is described in detail with reference to the preferred implementation methods. Ordinary technicians in this field should understand that the changes, modifications, additions or substitutions made by ordinary technicians in this technical field within the essential scope of the present invention do not deviate from the purpose of the present invention and should also fall within the scope of protection of the claims of the present invention.

Claims

1. A crystallizer, comprising a tank body (1), characterized in that: The tank body (1) is provided with a heat exchange tube (2), an annular heat exchange cavity is provided between the inner wall and the outer wall of the heat exchange tube (2), and the heat exchange tube (2) is also connected with a water inlet (6) and a water outlet (5) both of which are in communication with the heat exchange cavity; A guide plate (3) is also provided in the heat exchange cavity, and the guide plate (3) extends spirally upwards.

2. The crystallizer according to claim 1, characterized in that: Two stirring rods (7) arranged opposite to each other and extending downward are fixedly connected to the stirring shaft (4) in the tank body (1). The bottom ends of the stirring rods (7) extend outwardly at an angle. A stirring fan (8) is also fixedly connected to the inner side surface of the stirring rods (7). The stirring fan (8) is provided with a plurality of through holes.

3. The crystallizer according to claim 2, characterized in that: The inner bottom surface of the tank body (1) is provided with a protrusion (9) located directly below the stirring shaft (4) and protruding upwards. The tank body (1) is provided with two discharge ports (10), and the two discharge ports (10) are evenly arranged along the circumference of the protrusion (9). The protrusion (9) is located between the two stirring fans (8).

4. The crystallizer according to claim 3, characterized in that: The bottom surface of the stirring fan (8) is adapted to the inner bottom surface of the tank body (1) and extends to the inner bottom surface of the tank body (1), and the discharge port (10) is located between the stirring fan (8) and the protrusion (9).

5. The crystallizer according to claim 3, characterized in that: The top surface of the protrusion (9) is a spherical surface, and the spherical surface and the inner bottom surface of the tank body (1) are a plurality of arc surfaces that are sequentially arranged and connected along the circumferential direction, and the discharge port (10) is located at the connection between the arc surface and the inner bottom surface of the tank body (1).

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