Cooling device for chemical raw materials

Abstract

A cooling device for chemical raw materials comprises a cooling tank, a fan cooling mechanism and a follow-up stirring mechanism, a hollow cooling chamber is arranged in the cooling tank, the upper portion of the cooling tank is provided with a feeding port and an air dispersing port which are communicated with the cooling chamber, the lower portion of the cooling tank is connected with a discharging pipe communicated with the cooling chamber, and the fan cooling mechanism comprises a motor, a driving shaft and fan blades. The motor is arranged on the outer side of the upper portion of the cooling tank, the fan blades are arranged on the upper portion in the cooling chamber, the driving shaft vertically and rotatably penetrates through the side wall of the upper portion of the cooling tank, the upper end of the driving shaft is connected with the driving end of the motor, and the lower end of the driving shaft is connected with the fan blades. The motor drives the driving shaft to drive the fan blades to rotate and simultaneously drives the follow-up stirring mechanism to rotate so as to cool and stir the chemical raw materials injected into the cooling chamber. Therefore, the cooling efficiency of the chemical raw materials is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of material cooling, in particular to a cooling device suitable for liquid or granular chemical raw materials. Background Art

[0002] The production of chemical raw materials is usually accompanied by high temperatures, and the chemical raw materials need to be cooled after they are produced before they can be packaged and stored or used for chemical production. For liquid or granular chemical raw materials, a common cooling method in traditional production processes is to allow the chemical raw materials to cool naturally, but the natural cooling of chemical raw materials takes a lot of time, resulting in low cooling efficiency and affecting the efficiency of the overall production process. Therefore, how to provide a cooling device suitable for liquid or granular chemical raw materials has become one of the technical problems that need to be solved in this field. Utility Model Content

[0003] The technical problem to be solved by this technical solution is how to provide a cooling device suitable for liquid or granular chemical raw materials to improve the cooling efficiency of the chemical raw materials.

[0004] In order to solve the above technical problems, the present technical scheme provides a cooling device for chemical raw materials, which comprises: a cooling tank, a fan cooling mechanism and a follow-up stirring mechanism, wherein the interior of the cooling tank has a hollow cooling chamber, the upper part of the cooling tank has a feed port and an air outlet communicated with the cooling chamber, the lower part of the cooling tank is connected with a discharge pipe communicated with the cooling chamber, and the fan cooling mechanism comprises: a motor, a drive shaft and fan blades, the motor is installed on the outer side of the upper part of the cooling tank, the fan blades are arranged in the upper part of the cooling chamber, the drive shaft is vertically and rotatably penetrated through the side wall of the upper part of the cooling tank and the upper end of the drive shaft is connected to the driving end of the motor, the lower end of the drive shaft is connected to the fan blades, the follow-up stirring mechanism is arranged in the cooling chamber and connected to the drive shaft, the motor drives the drive shaft to drive the fan blades to rotate, and at the same time also drives the follow-up stirring mechanism to rotate, so as to cool and stir the chemical raw materials injected into the cooling chamber. Accordingly, after the chemical raw materials are injected into the cooling chamber in the cooling tank through the feed port, the high-temperature chemical raw materials can be quickly cooled down under the action of the cold air flow generated by the rotation of the fan blades, and the temperature distribution of the chemical raw materials can be made more uniform under the stirring action of the follow-up stirring mechanism and the heat of the chemical raw materials can be dissipated. The heat released by the chemical raw materials is discharged through the air outlet, thereby improving the cooling efficiency of the chemical raw materials.

[0005] As another implementation of the technical solution, the cooling tank is in the shape of a vertical cylinder, the feed port and the air outlet are respectively opened on the upper end wall of the cooling tank and communicate with the cooling chamber inside the cooling tank, the motor is installed on the outside of the central position of the upper end wall of the cooling tank, the drive shaft is vertically and rotatably penetrated through the central position of the upper end wall through the bearing and its two ends are respectively connected to the drive end and the fan blade of the motor, and the discharge pipe is connected to the outside of the central position of the lower end wall of the cooling tank and communicates with the cooling chamber. Accordingly, the cylindrical cooling tank is more conducive to the operation of each component.

[0006] As another implementation of the technical solution, the follow-up stirring mechanism includes: a plurality of driving rods, a driving ring, a plurality of connecting rods, a follow-up ring, a plurality of supporting rods, a rotating rod and a plurality of stirring rods, wherein the plurality of driving rods are horizontally arranged at the same distance and radially arranged in the upper part of the cooling chamber, and the ends of the plurality of driving rods close to each other are fixedly connected to the part of the driving shaft located above the fan blades, and the ends of the plurality of driving rods far away from each other are fixedly connected to the inner ring surface of the driving ring, and the plurality of connecting rods are vertically arranged at the same distance in the cooling chamber and adjacent to the inner side wall of the cooling chamber, and the upper ends of the plurality of connecting rods are fixedly connected to the lower ring surface of the driving ring, and the plurality of connecting rods The lower ends of the plurality of support rods are fixedly connected to the upper ring surface of the follower ring, the plurality of support rods are horizontally arranged at the same distance and radially arranged in the lower part of the cooling chamber, and the ends of the plurality of support rods that are far away from each other are fixedly connected to the inner ring surface of the follower ring, the rotating rod is vertically arranged in the cooling chamber along the axis of the cooling tank, the lower end of the rotating rod is fixedly connected to the ends of the plurality of support rods that are close to each other, the plurality of stirring rods are divided into multiple groups and are fixedly arranged on the rotating rod at the same distance from top to bottom, each group of stirring rods includes multiple stirring rods that are horizontally arranged at the same distance and radially arranged, and the ends of the plurality of stirring rods in each group that are close to each other are fixedly connected to the rotating rod. Accordingly, through the sequential transmission of the driving rod, the driving ring, the connecting rod, the follower ring, the support rod and the rotating rod, the motor can drive the driving shaft to indirectly drive the stirring rod to stir, thereby improving the utilization rate of the motor and making the structure of the cooling device more compact.

[0007] As another implementation of the technical solution, a scraper is fixedly provided on one side of the connecting rods facing the inner wall, and the scraper contacts the inner wall. Thus, chemical raw materials can be effectively prevented from adhering to the inner wall, so as to ensure the cleanliness of the inner wall of the cooling tank, thereby avoiding contamination and corrosion of the inner wall by chemical raw materials.

[0008] As another implementation of the technical solution, the follow-up stirring mechanism further includes: a supporting ring, the lower ring surface of the supporting ring is fixedly mounted on the inner side of the lower end wall of the cooling tank, and the lower ring surface of the follow-up ring is movably arranged on the upper ring surface of the supporting ring. Accordingly, the arrangement of the supporting ring can reduce the load of the driving shaft, strengthen the structural strength of the follow-up stirring mechanism, and increase the stirring stability of the follow-up stirring mechanism.

[0009] As another implementation of the technical solution, the lower end wall is gradually concave from its periphery to its central position, and the discharge pipe is connected to the outer side of the lowest position of the concave lower end wall and communicates with the cooling chamber. Accordingly, the concave lower end wall is more conducive to the collection of liquid or granular chemical raw materials and discharge through the discharge pipe, and can effectively prevent the chemical raw materials from remaining on the lower end wall.

[0010] As another implementation of the technical solution, the discharge pipe is provided with a valve, so as to facilitate the control of the discharge.

[0011] As another implementation of the technical solution, the cooling device further includes: a diffuser sliding cover, which is mainly composed of a sliding part and a cover body, the sliding part is arranged on the outer side of the upper part of the cooling tank and is located beside the diffuser, the cover body is movably connected to the sliding part, the edge of the diffuser protrudes to form a circle of edge part, the cover body is limited by the sliding part and moves and contacts with the edge part to completely or partially cover the diffuser. Accordingly, the cover body can be opened during the cooling of the chemical raw materials, so that the diffuser is unobstructed and the high-temperature heat in the cooling chamber is discharged; and the cover body is closed when the cooling device is not in use, so that the diffuser is completely covered by the cover body, and the edge of the diffuser is in contact with the cover body to improve the sealing of the cover, thereby effectively preventing foreign dust and other impurities from entering the cooling chamber and keeping the cooling chamber clean.

[0012] As another implementation of the present technical solution, the sliding part is composed of two fixed blocks, two limiting rods and a moving block. The two fixed blocks are fixedly arranged at a distance on the outer side of the upper part of the cooling tank and are located beside the air diffusion port. The two limiting rods are fixedly arranged between the two fixed blocks in parallel and at a distance so that a limiting slide groove is formed between the two limiting rods and their lower parts, and the axis of the limiting slide groove is in line with the center of the air diffusion port. The moving block is slidably embedded in the limiting slide groove. The cover body is composed of an outer frame and a shielding plate. The outer frame corresponds to the shape of the air diffusion port, and one side of the outer frame is fixedly combined with the moving block. The shielding plate is fixedly arranged in the outer frame. The moving block is limitedly moved in the limiting slide groove to drive the shielding plate to contact the edge of the port and completely or partially block the air diffusion port. Accordingly, the sliding operation of the cover body is facilitated to block or partially block the air diffusion port.

[0013] As another implementation of the technical solution, a plurality of vertical support legs are evenly arranged at the bottom of the cooling tank, so that the cooling tank can be raised to facilitate the arrangement of the discharge pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the appearance of the cooling device for chemical raw materials of the utility model;

[0015] Figure 2 It is a side half-section schematic diagram of a cooling tank in the cooling device for chemical raw materials of the utility model;

[0016] Figure 3 It is a structural schematic diagram of the air diffusion port sliding cover in the utility model.

[0017] Explanation of symbols in the accompanying drawings: 1 cooling device for chemical raw materials; 10 cooling tank; 11 cooling chamber; 12 feed inlet; 13 air outlet; 14 discharge pipe; 15 supporting leg; 20 fan cooling mechanism; 21 motor; 22 driving shaft; 23 fan blade; 30 follow-up stirring mechanism; 31 driving rod; 32 driving ring; 33 connecting rod; 331 scraper; 34 follow-up ring; 35 supporting rod; 36 rotating rod; 37 stirring rod; 38 supporting ring; 40 air outlet slide cover; 41 fixed block; 42 limiting rod; 43 moving block; 44 limiting slide; 45 outer frame; 46 shielding plate. DETAILED DESCRIPTION

[0018] The detailed description and technical contents of the present invention are described below with reference to the accompanying drawings. However, the accompanying drawings are only provided for reference and description and are not intended to limit the present invention.

[0019] In the context of this specification, any two or more embodiments of the present invention may be arbitrarily combined, and the technical solution thus formed belongs to part of the original disclosure of this specification and also falls within the protection scope of the present invention.

[0020] like Figure 1 and Figure 2 Shown is a schematic diagram of a specific embodiment of a cooling device for chemical raw materials of the utility model. The cooling device 1 for chemical raw materials (hereinafter referred to as cooling device 1) includes a cooling tank 10, a fan cooling mechanism 20 and a follow-up stirring mechanism 30. Among them, the interior of the cooling tank 10 has a hollow cooling chamber 11, the upper part of the cooling tank 10 has a feed port 12 and an air outlet 13 communicated with the cooling chamber 11, and the lower part of the cooling tank 10 is connected to a discharge pipe 14 communicated with the cooling chamber 11. In addition, a plurality of vertical support legs 15 can be evenly arranged at the lower part of the cooling tank 10 so as to elevate the cooling tank 10 and facilitate the setting of the discharge pipe 14, and a valve (not shown in the figure) can also be arranged on the discharge pipe 14 to facilitate the control of the discharge. Figure 2As shown, the fan cooling mechanism 20 includes a motor 21, a drive shaft 22 and a fan blade 23, wherein the motor 21 is installed on the outer side of the upper part of the cooling tank 10, the fan blade 23 is arranged in the upper part of the cooling chamber 11, the drive shaft 22 is vertically and rotatably penetrated through the side wall of the upper part of the cooling tank 10, and the upper end of the drive shaft 22 is connected to the driving end of the motor 21, and the lower end of the drive shaft 22 is connected to the fan blade 23. The follow-up stirring mechanism 30 is arranged in the cooling chamber 11 and connected to the drive shaft 22. Accordingly, the fan blade 23 can be driven to rotate by driving the drive shaft 22 through the motor 21, and at the same time, the follow-up stirring mechanism 30 can also be driven to rotate, so as to cool and stir the chemical raw materials injected into the cooling chamber 11 at the same time.

[0021] Specifically, combined Figure 1 As shown, the cooling tank 10 in this embodiment is in the shape of a vertically arranged cylinder, and the feed port 12 and the air diffuser 13 are respectively opened on the upper end wall of the cooling tank 10 and communicate with the cooling chamber 11 inside the cooling tank 10. The motor 21 is installed on the outside of the central position of the upper end wall of the cooling tank 10. The drive shaft 22 is vertically and rotatably penetrated in the central position of the upper end wall through a bearing (not shown in the figure), and the two ends of the drive shaft 22 are respectively connected to the drive end of the motor 21 and the fan blade 23. The discharge pipe 14 is connected to the outside of the central position of the lower end wall of the cooling tank 10 and communicates with the cooling chamber 11.

[0022] Furthermore, combined with Figure 2As shown, the follow-up stirring mechanism 30 in this embodiment includes several driving rods 31, a driving ring 32, several connecting rods 33, a follow-up ring 34, several supporting rods 35, a rotating rod 36 and several stirring rods 37, wherein as shown in the figure, the number of the driving rods 31, the connecting rods 33 and the supporting rods 35 are all 4, and the number of the stirring rods 37 is 12. The number of the above components is only for illustration, and in actual application, the number of the above components can be flexibly set according to actual operation needs, and the utility model does not limit this. The several driving rods 31 are horizontally arranged at the upper part of the cooling chamber 11 with the same distance and radially spaced, and the end portions of the several driving rods 31 close to each other are fixedly connected to the part of the driving shaft 22 located above the fan blades 23, and the end portions of the several driving rods 31 away from each other are fixedly connected to the inner ring surface of the driving ring 32. The plurality of connecting rods 33 are vertically arranged in the cooling chamber 11 at the same distance and adjacent to the inner wall of the cooling chamber 11, and the upper ends of the plurality of connecting rods 33 are fixedly connected to the lower ring surface of the driving ring 32, and the lower ends of the plurality of connecting rods 33 are fixedly connected to the upper ring surface of the follower ring 34. The plurality of supporting rods 35 are horizontally arranged in the lower part of the cooling chamber 11 at the same distance and radially, and the ends of the plurality of supporting rods 35 that are far from each other are fixedly connected to the inner ring surface of the follower ring 34. The rotating rod 36 is vertically arranged in the cooling chamber 11 along the axis of the cooling tank 10, and the lower end of the rotating rod 36 is fixedly connected to the ends of the plurality of supporting rods 35 that are close to each other. The plurality of stirring rods 37 are divided into a plurality of groups and are fixedly arranged on the rotating rod 36 at the same distance from top to bottom. Each group of stirring rods includes a plurality of stirring rods 37 which are arranged horizontally at the same distance and radially, and one end of each group of the plurality of stirring rods 37 close to each other is fixedly connected to the rotating rod 36. Accordingly, through the sequential transmission of the driving rod 31, the driving ring 32, the connecting rod 33, the follower ring 34, the supporting rod 35 and the rotating rod 36, the motor 21 can drive the driving shaft 22 to indirectly drive the stirring rod 37 to stir the chemical raw material, thereby not only improving the utilization rate of the motor 21, but also making the structure of the cooling device 1 more compact.

[0023] Furthermore, the several connecting rods 33 may be fixedly provided with vertical strip-shaped scrapers 331 on one side of the inner wall of the cooling tank 10, and the scrapers 331 are in contact with the inner wall. The setting of the scrapers 331 can effectively prevent chemical raw materials from adhering to the inner wall to ensure the cleanliness of the inner wall of the cooling tank 10, thereby avoiding contamination and corrosion of the inner wall by chemical raw materials.

[0024] Furthermore, the follower stirring mechanism 30 may also include a supporting ring 38, the lower ring surface of the supporting ring 38 is fixedly mounted on the inner side of the lower end wall of the cooling tank 10, and the lower ring surface of the follower ring 34 is movably arranged on the upper ring surface of the supporting ring 38. The arrangement of the supporting ring 38 can not only reduce the load-bearing burden of the drive shaft 22, but also strengthen the structural strength of the follower stirring mechanism 30, and can increase the stability of the stirring of the follower stirring mechanism 30. In addition, a guide portion (not shown in the figure) may be provided between the lower ring surface of the follower ring and the upper ring surface of the supporting ring. The guide portion may be a circle of guide grooves formed by a depression of the lower ring surface of the follower ring or the upper ring surface of the supporting ring, and a circle of engaging portions formed by the upper ring surface of the supporting ring or the lower ring surface of the follower ring protruding relative to the guide groove. The guide portion is constituted by the guide groove and the engaging portion being movably embedded in each other; or a circle of embedding grooves are correspondingly provided on the lower ring surface of the follower ring and the upper ring surface of the supporting ring, and the lower ring surface of the follower ring and the upper ring surface of the supporting ring are matched with each other, and guide balls are provided in the matched embedding grooves to constitute the guide portion. The utility model may also constitute the guide portion in other structural forms, which is not limited to this.

[0025] like Figure 3 Combined with Figure 1As shown, the cooling device 1 of this embodiment may also include a diffuser sliding cover 40. The diffuser sliding cover 40 is mainly composed of a sliding part and a cover body, wherein the sliding part is arranged on the outer side of the upper part of the cooling tank 10 and is located beside the diffuser 13, and the cover body is movably connected to the sliding part. The edge of the diffuser 13 is protruded to form a circle of edge part (not shown in the figure), and the cover body is limited by the sliding part and moves and contacts with the edge part to completely or partially cover the diffuser 13. In this way, the cover body can be opened during the cooling of the chemical raw materials, so that the diffuser 13 is not blocked and the high-temperature heat in the cooling chamber is discharged; and the cover body is closed when the cooling device 1 is not in use, so that the diffuser 13 is completely blocked by the cover body, and the edge of the diffuser 13 is in contact with the cover body to improve the sealing of the shielding, thereby effectively preventing foreign dust and other impurities from entering the cooling chamber 11 and keeping the cooling chamber 11 clean. In more detail, the sliding part is composed of two fixed blocks 41, two limiting rods 42 and a moving block 43. The two fixed blocks 41 are fixedly arranged at a distance on the outer side of the upper part of the cooling tank 10 and located beside the diffuser port 13. The two limiting rods 42 are fixedly arranged between the two fixed blocks 41 in parallel and at a distance, so that a limiting slot 44 is formed between the two limiting rods 42 and at their lower parts, and the axis of the limiting slot 44 is colinear with the center of the diffuser port 13. The moving block 43 is slidably embedded in the limiting slot 44, and the lower part of the moving block 43 is formed into an inverted T shape corresponding to the structure of the limiting slot 44 so as to be embedded in the limiting slot 44. The cover body is composed of an outer frame 45 and a shielding plate 46. The shape of the outer frame 45 is set to correspond to the shape of the diffuser port 13, and one side of the outer frame 45 is fixedly combined with the moving block 43, and the shielding plate 46 is fixedly arranged in the outer frame 45. The moving block 43 moves within the limiting sliding groove 44 to drive the shielding plate 46 to contact the edge of the opening and completely or partially shield the air diffusion opening 13 .

[0026] As another embodiment of the utility model (not shown in the figure), the lower end wall of the cooling tank can be gradually concave from its periphery to its central position, and the discharge pipe is connected to the outer side of the lowest position of the concave lower end wall and communicates with the cooling chamber. The concave lower end wall is more conducive to the collection of liquid or granular chemical raw materials and their discharge through the discharge pipe, and can effectively prevent the chemical raw materials from remaining on the lower end wall.

[0027] To sum up, when the cooling device of the utility model is used to cool liquid or granular chemical raw materials, after the chemical raw materials are injected into the cooling chamber in the cooling tank through the feed port, the high-temperature chemical raw materials can be quickly cooled down under the action of the cold air flow generated by the rotation of the fan blades. At the same time, under the stirring action of the follow-up stirring mechanism, the temperature distribution of the chemical raw materials can be made more uniform and the chemical raw materials can be further dissipated of heat. The heat released by the chemical raw materials is discharged through the air outlet, thereby improving the cooling efficiency of the chemical raw materials.

[0028] The above are only preferred embodiments of the present invention and are not intended to limit the patent scope of the present invention. Other equivalent changes made using the patent concept of the present invention should all fall within the patent protection scope of the present invention.

Claims

1. A cooling device for chemical raw materials, comprising: A cooling tank and a fan cooling mechanism, wherein the interior of the cooling tank is provided with a hollow cooling chamber, the upper portion of the cooling tank is provided with a feed port and an air dispersion port which are communicated with the cooling chamber, the lower portion of the cooling tank is connected with a discharge pipe which is communicated with the cooling chamber, and the fan cooling mechanism comprises: a motor, a drive shaft and fan blades, the motor is installed on the outer side of the upper portion of the cooling tank, the fan blades are arranged at the upper portion of the cooling chamber, the drive shaft is vertically and rotatably penetrates the side wall of the upper portion of the cooling tank, and the upper end portion of the drive shaft is connected to the drive end of the motor, and the lower end portion of the drive shaft is connected to the fan blades, and is characterized in that the cooling device further comprises: a follow-up stirring mechanism, the follow-up stirring mechanism is arranged in the cooling chamber and connected to the drive shaft, the motor drives the drive shaft to drive the fan blades to rotate, and at the same time also drives the follow-up stirring mechanism to rotate, so as to cool and stir the chemical raw materials injected into the cooling chamber.

2. The cooling device according to claim 1, characterized in that: The cooling tank is in the shape of a vertically arranged cylinder, the feed port and the air diffusion port are respectively opened on the upper end wall of the cooling tank and communicate with the cooling chamber inside the cooling tank, the motor is installed on the outside of the central position of the upper end wall of the cooling tank, the drive shaft is vertically and rotatably penetrated through the central position of the upper end wall through a bearing and its two ends are respectively connected to the driving end of the motor and the fan blades, the discharge pipe is connected to the outside of the central position of the lower end wall of the cooling tank and communicates with the cooling chamber.

3. The cooling device according to claim 2, characterized in that: The follow-up stirring mechanism includes: a plurality of driving rods, a driving ring, a plurality of connecting rods, a follow-up ring, a plurality of supporting rods, a rotating rod and a plurality of stirring rods, wherein the plurality of driving rods are horizontally arranged at the same distance and radially arranged in the upper part of the cooling chamber, and the ends of the plurality of driving rods close to each other are fixedly connected to the part of the driving shaft located above the fan blades, and the ends of the plurality of driving rods far away from each other are fixedly connected to the inner annular surface of the driving ring, and the plurality of connecting rods are vertically arranged at the same distance and arranged in the cooling chamber and adjacent to the inner side wall of the cooling chamber, and the upper ends of the plurality of connecting rods are fixedly connected to the lower annular surface of the driving ring, and the lower ends of the plurality of connecting rods are fixedly connected to the follow-up stirring mechanism. The upper ring surface of the moving ring is fixedly connected, the several support rods are horizontally arranged at the same distance and radially in the lower part of the cooling chamber, and the ends of the several support rods away from each other are fixedly connected to the inner ring surface of the following ring, the rotating rod is vertically arranged in the cooling chamber along the axis of the cooling tank, the lower end of the rotating rod is fixedly connected to the ends of the several support rods close to each other, the several stirring rods are divided into multiple groups and fixedly arranged on the rotating rod at the same distance from top to bottom, each group of stirring rods includes multiple stirring rods arranged horizontally at the same distance and radially, and the ends of the multiple stirring rods of each group close to each other are fixedly connected to the rotating rod.

4. The cooling device according to claim 3, characterized in that: A scraper is fixedly provided on one side of the plurality of connecting rods facing the inner wall, and the scraper is in contact with the inner wall.

5. The cooling device according to claim 3, characterized in that: The follow-up stirring mechanism also includes: a supporting ring, the lower ring surface of the supporting ring is fixedly mounted on the inner side of the lower end wall of the cooling tank, and the lower ring surface of the follow-up ring is movably arranged on the upper ring surface of the supporting ring.

6. The cooling device according to claim 2, characterized in that: The lower end wall is gradually concave from its periphery to its central position, and the discharge pipe is connected to the outer side of the lowest position of the concave lower end wall and communicates with the cooling chamber.

7. The cooling device according to claim 6, characterized in that: The discharge pipe is provided with a valve.

8. The cooling device according to claim 1, characterized in that: Also includes: The air diffusion port sliding cover is mainly composed of a sliding portion and a cover body, the sliding portion is arranged on the outer side of the upper part of the cooling tank and is located beside the air diffusion port, the cover body is movably connected to the sliding portion, the edge of the air diffusion port is protruding to form a circle of edge portion, the cover body is limited by the sliding portion and moves and contacts with the edge portion to completely or partially cover the air diffusion port.

9. The cooling device according to claim 8, characterized in that: The sliding part is composed of two fixed blocks, two limiting rods and a moving block, the two fixed blocks are fixedly arranged at a distance on the outer side of the upper part of the cooling tank and are located beside the air diffusion port, the two limiting rods are fixedly arranged between the two fixed blocks in parallel and at intervals so that a limiting slide groove is formed between the two limiting rods and at their lower parts, and the axis of the limiting slide groove is colinear with the center of the air diffusion port, the moving block is slidably embedded in the limiting slide groove, the cover body is composed of an outer frame and a baffle plate, the outer frame corresponds to the shape of the air diffusion port, and one side of the outer frame is fixedly combined with the moving block, and the baffle plate is fixedly arranged in the outer frame, and the moving block is limitedly moved in the limiting slide groove to drive the baffle plate to contact the edge of the mouth and completely or partially block the air diffusion port.

10. The cooling device according to claim 1, characterized in that: A plurality of vertical supporting legs are evenly arranged at the lower part of the cooling tank.

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