A device for rapidly cooling powder particles and granules

Abstract

The utility model provides a kind of powder particle, granule rapid cooling device, including cooling tower and air flow mechanism, the cooling cavity is formed in the cooling tower, the upper and lower ends of the cooling tower are respectively with the input valve and output valve that communicate in the cooling cavity, the cooling cavity is equipped with a plurality of first cooling pipe and a plurality of second cooling pipe, the first cooling pipe, the second cooling pipe both ends pass through the cooling tower side wall and form opening, the first cooling pipe, the second cooling pipe surface distribution has a plurality of micropore;The air flow mechanism inputs cold air into the opening in each first cooling pipe both ends, and from the micropore of the first cooling pipe, the powder particle, granule in cooling cavity is input, the air in powder particle, granule is passed through the micropore and enters the second cooling pipe, and the hot air in the second cooling pipe is extracted by the air flow mechanism, realizes the heat dissipation effect to powder particle, granule.

Description

Technical Field

[0001] This utility model belongs to the field of granular material cooling, specifically relating to a rapid cooling device for powders and granules. Background Technology

[0002] In the booming development of industries such as chemical engineering, construction, and new materials, granular materials, including powders and other particles, are extremely common as intermediate or final products. These materials typically require cooling to meet manufacturing or packaging requirements. Existing granular material cooling equipment usually uses water cooling, inserting pipes filled with cold water into the hot granules. The flow of water carries away the heat from the accumulated hot granules. However, in practical applications, this method is limited by the characteristics of the granules. For example, when the thermal conductivity of the granules is very low, even with a large flow of water per unit time, the temperature of the granules near the pipe wall can only be reduced, and it cannot uniformly and efficiently cool the entire area of ​​hot granules to below the process-specified temperature in a short time. Utility Model Content

[0003] (1) Technical problems to be solved This invention provides a rapid cooling device for powders and granules, which aims to solve the problem that water cooling cannot uniformly and efficiently reduce the temperature of high-temperature granular materials in the entire area to below the temperature specified by the process in a short time.

[0004] (2) Technical solution This utility model provides a rapid cooling device for powders and granules, including a cooling tower and an air flow mechanism. The cooling tower has a cooling chamber for containing powders, granules, and other granular materials. The upper and lower ends of the cooling tower have an input valve and an output valve that communicate with the cooling chamber, respectively. The cooling chamber is provided with a plurality of first cooling pipes and a plurality of second cooling pipes. The two ends of the first cooling pipes and the second cooling pipes pass through the side wall of the cooling tower to form openings. The surfaces of the first cooling pipes and the second cooling pipes are distributed with a plurality of micropores for air circulation between the granular materials and the first cooling pipes and the second cooling pipes. The airflow mechanism introduces cold air into the openings at both ends of each of the first cooling pipes, and introduces granular material into the cooling chamber through the micropores of the first cooling pipes. The air in the granular material enters the second cooling pipe through the micropores, and the hot air in the second cooling pipe is extracted by the airflow mechanism.

[0005] Preferably, the diameter of the micropores is 0.15-0.5 mm.

[0006] Preferably, the first cooling pipe is distributed longitudinally and transversely within the cooling tower, and the second cooling pipe is also distributed longitudinally and transversely within the cooling tower.

[0007] Preferably, the outer wall of the cooling tower is provided with a first manifold and a second manifold that communicate with the airflow mechanism, and the opening of each of the first cooling pipes communicates with the inside of the first manifold and the opening of the second cooling pipe communicates with the inside of the second manifold.

[0008] Preferably, a partition is provided between the first busbar sleeve and the second busbar sleeve.

[0009] Preferably, the airflow mechanism includes an air supply section and an extraction section. The air supply section is used to supply air into the openings at both ends of the first cooling pipe. The working end of the extraction section is connected to a washing tank, which is filled with water. One end of the washing tank is connected to the openings at both ends of the second cooling pipe through a connecting pipe.

[0010] Preferably, the washing tank is equipped with a drain valve at the bottom.

[0011] Preferably, the air supply unit is an industrial air cooler, and the extraction unit is a vacuum pump.

[0012] Preferably, the top of the cooling tower is provided with an inspection port that connects to the cooling chamber.

[0013] Preferably, the cooling tower is equipped with a level gauge at the top and a thermocouple at the bottom.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: In operation, hot granular material is introduced into the cooling chamber of the cooling tower through the inlet valve. Once the granular material in the cooling chamber reaches a certain volume, the inlet valve is closed and sealed. At this time, a capillary network is formed in the granular material. Cold air is then introduced into the first cooling pipe through the openings at both ends of the first cooling pipe via the air flow mechanism. The cold air is introduced into the capillary network formed in the granular material through the micropores on the surface of the first cooling pipe, and the air in the capillary network in the granular material is pushed towards the micropores of the second cooling pipe. At the same time, the air flow mechanism draws the air out of the second cooling pipe through the openings at both ends, creating a negative pressure state in the second cooling pipe. This causes the hot air in the capillary network in the granular material to be drawn into the second cooling pipe and then drawn out by the air flow mechanism, thus achieving the heat dissipation effect on the granular material. Attached Figure Description

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

[0016] Figure 2 This is a schematic diagram of the structure of the first cooling pipe of this utility model.

[0017] Figure 3 This is a schematic diagram of the structure of the second cooling pipe of this utility model.

[0018] Figure 4 This is a schematic diagram of the structure of the first busbar jacket of this utility model.

[0019] Figure 5 This is a schematic diagram of the structure of the second busbar jacket of this utility model.

[0020] Figure label: Cooling tower 1, inspection port 10, level gauge 101, thermocouple 102, partition 103, cooling chamber 11, input valve 111, output valve 112, first cooling pipe 113, second cooling pipe 114, micropore 12, first manifold jacket 13, second manifold jacket 14, air flow mechanism 2, connecting pipe 20, air supply section 21, extraction section 22, washing tank 23, drain valve 231. Detailed Implementation

[0021] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0022] like Figures 1-5 As shown, this utility model provides a rapid cooling device for powders and granules, including a cooling tower 1 and an air flow mechanism 2. The cooling tower 1 has a cooling chamber 11 for containing powders, granules and other granular materials. The upper and lower ends of the cooling tower 1 are respectively provided with an input valve 111 and an output valve 112 communicating with the cooling chamber 11. The cooling chamber 11 is provided with a plurality of first cooling pipes 113 and a plurality of second cooling pipes 114. The two ends of the first cooling pipes 113 and the second cooling pipes 114 pass through the side wall of the cooling tower 1 to form openings. The surfaces of the first cooling pipes 113 and the second cooling pipes 114 are distributed with a plurality of micropores 12 for air circulation between the granular materials and the cooling pipes. The airflow mechanism 2 introduces cold air into the openings at both ends of each of the first cooling pipes 113, and introduces granular material into the cooling chamber 11 through the micropores 12 of the first cooling pipes 113. The air in the granular material enters the second cooling pipe 114 through the micropores 12, and the hot air in the second cooling pipe 114 is extracted by the airflow mechanism 2.

[0023] Furthermore, such as Figures 1-5 As shown, the diameter of the micropores 12 is 0.15-0.5 mm. The first cooling pipes 113 are distributed longitudinally and transversely within the cooling tower 1, and the second cooling pipes 114 are also distributed longitudinally and transversely within the cooling tower 1.

[0024] Specifically, in use, hot granular material is introduced into the cooling chamber 11 inside the cooling tower 1 through the inlet valve 111. After the granular material in the cooling chamber 11 reaches a certain volume, the inlet valve 111 is closed and sealed. At this time, a capillary channel network with a porosity of 30%-40% is formed in the granular material, with an average pore size of 0.1-0.3 mm. At this time, cold air is introduced into the first cooling pipe 113 through the openings at both ends of the first cooling pipe 113 by the air flow mechanism 2. The cold air passes through the micropores 12 on the surface of the first cooling pipe 113. Air is introduced into the capillary network formed within the granular material, pushing the air within the capillary network towards the micropores 12 of the second cooling pipe 114. Simultaneously, the air within the second cooling pipe 114 is extracted from its two ends through the extraction section 22. The extraction section 22 can be a vacuum pump of the prior art. The extraction section 22 creates a negative pressure state within the granular material and the second cooling pipe 114. This negative pressure state reaches at least 1 kg, typically 1 kg, generating negative pressure while maintaining good airflow. The output power required for the extraction section 22 to generate a larger negative pressure is lower than that required for 1 kg, resulting in better economic efficiency. This allows hot air within the capillary network of the granular material to be drawn into the second cooling pipe 114 and extracted through the airflow mechanism 2. Taking molding sand as an example, since the micropores 12 are typically between 0.15-0.5 mm, while the diameter of the molding sand requiring cooling is between 2-4 mm, sand particles will not fall into the second cooling pipe 114 through the micropores 12. Sand particles smaller than 0.15-0.5 mm in diameter will pass through the micropores 12. The air falls into the second cooling pipe 114 and is extracted through the openings at both ends of the second cooling pipe 114. In addition, according to the standard molding sand specified in GB / T2684, the air permeability is ≥120. The airflow moves at high speed in a turbulent manner in the capillary network in the molding sand, and its flow velocity is 0.4-0.8m / s. When the air flow mechanism 2 extracts the air in the second cooling pipe 114 and increases the vacuum degree in the second cooling pipe 114 to -0.06MPa, the airflow velocity increases by 120%, achieving a higher heat dissipation efficiency.

[0025] It is worth noting that, such as Figures 1-5As shown, each first cooling pipe 113 is distributed longitudinally and transversely within the cooling cavity 11. The longitudinally distributed first cooling pipes 113 combine to form a first plane, and the transversely distributed first cooling pipes 113 combine to form a second plane. Both the first and second planes are parallel to the horizontal plane, and the first and second planes are staggered from the top to the bottom of the cooling cavity 11. Each second cooling pipe 114 is also distributed longitudinally and transversely within the cooling cavity 11. The longitudinally distributed second cooling pipes 114 combine to form a first plane, and the transversely distributed second cooling pipes 114 combine to form a second plane. Both the first and second planes are parallel to the horizontal plane, and the first and second planes are staggered from the top to the bottom of the cooling cavity 11. This arrangement effectively segments the granular material within the cooling cavity 11, shortens the length of the capillary channels within the granular material, and allows the granular material between the first and second planes to be subjected to airflow and suction from multiple directions, resulting in smoother airflow within the capillary network and higher heat dissipation efficiency.

[0026] Furthermore, such as Figures 1-5 As shown, the outer wall of the cooling tower 1 is provided with a first manifold 13 and a second manifold 14 that communicate with the airflow mechanism 2. The opening of each of the first cooling pipes 113 communicates with the inside of the first manifold 13, and the opening of each of the second cooling pipes 114 communicates with the inside of the second manifold 14. A partition 103 is provided between the first manifold 13 and the second manifold 14.

[0027] Specifically, such as Figures 1-5 As shown, the first manifold 13 has an inlet connected to the air supply end of the air flow mechanism 2, and the second manifold 14 has an outlet connected to the air outlet end of the air flow mechanism 2. Air is supplied to the inlet by the air flow mechanism 2, filling the first manifold 13 and the first cooling pipe 113 with air. The air is then cooled by the micro-holes 12 on the first cooling pipe 113. The air flow mechanism 2 then extracts air from the second cooling pipe 114 and the second manifold 14 through the outlet, cooling the air inside the second cooling pipe 114 and the first cooling pipe 113. A negative pressure is formed inside the second manifold 14, causing the air inside the granular material to pass through the micropores 12 of the second cooling pipe 114 and enter the second cooling pipe 114. After passing through the second manifold 14, it is output from the outlet. The partition 103 makes the first manifold 13 and the second manifold 14 independent of each other. The first manifold 13 and the second manifold 14 reduce the number of pipes connected to the outer wall of the cooling tower 1, and can increase the number of the first cooling pipe 113 and the second cooling pipe 114, thereby improving the air delivery and exhaust speed of the cooling tower 1 and improving the cooling efficiency.

[0028] Furthermore, such as Figures 1-5As shown, the airflow mechanism 2 includes an air supply section 21 and an extraction section 22. The air supply section 21 supplies air to the openings at both ends of the first cooling pipe 113. The working end of the extraction section 22 is connected to a washing tank 23, which is filled with water. One end of the washing tank 23 is connected to the openings at both ends of the second cooling pipe 114 via a connecting pipe 20. A drain valve 231 is provided at the bottom of the washing tank 23. The air supply section 21 is an industrial air cooler, and the extraction section 22 is a vacuum pump.

[0029] Based on the above, such as Figures 1-5 As shown, the air supply unit 21 is connected to the inlet of the first manifold jacket 13 via the connecting pipe 20. Airflow is blown out through the air supply unit 21, and after passing through the connecting pipe 20, the airflow enters the first manifold jacket 13 and then the first cooling pipe 113. It is worth noting that the air supply unit 21 can be an existing industrial air cooler, used to input airflow at or below room temperature into the first manifold jacket 13 to achieve a cooling effect on particulate matter. The extraction unit 22 extracts air from the second cooling pipe 114 and the second manifold jacket 14. The extracted airflow first passes through the washing tank 23, reducing the diameter of the airflow... Micro-dust particles of 0.15-0.5mm are discharged into the water in the washing tank 23 and then discharged through the extraction part 22, reducing dust in the extracted air and protecting the hygiene of the production environment. The extraction part 22 can be a vacuum pump in the prior art. In addition, the connecting pipe 20 connecting the washing tank 23 and the second manifold jacket 14 can extend downward into the washing tank 23 and be lower than the water surface in the washing tank 23, so that air is discharged into the water and then extracted to the vacuum pump for discharge. When cleaning the dust settled in the washing tank 23, the settled dust is discharged by draining the drain valve 231 at the bottom of the washing tank 23, thus achieving the effect of draining.

[0030] Furthermore, such as Figures 1-5 As shown, the top of the cooling tower 1 is provided with an inspection port 10 that connects to the cooling chamber 11. The top of the cooling tower 1 is provided with a level gauge 101, and the bottom is provided with a thermocouple 102.

[0031] Specifically, such as Figures 1-5 As shown, hot granular material is input into the cooling chamber 11 from the input valve 111 at the top of the cooling tower 1 until the granular material accumulates and is detected by the level gauge 101. At this time, the input valve 111 stops inputting granular material, and the temperature of the granular material is detected by the thermocouple. When the granular material cools down to the specified temperature, the output valve 112 is opened to output the granular material. The input valve 111 and the output valve 112 mentioned above can be solenoid valves in the prior art. The level gauge 101 and the thermocouple 102 are both in the prior art. The level gauge 101 is used to detect the height of the top surface of the granular material, and the thermocouple is used to detect the temperature of the granular material. They will not be described in detail here.

[0032] The following is a detailed explanation of the working principle of this utility model; In use, hot granular material is introduced into the cooling chamber 11 inside the cooling tower 1 through the input valve 111. After the granular material in the cooling chamber 11 reaches a certain volume, the input valve 111 is closed and sealed. At this time, a capillary network is formed in the granular material. At this time, cold air is introduced into the first cooling pipe 113 through the openings at both ends of the first cooling pipe 113 by the air flow mechanism 2. The cold air is introduced into the capillary network formed in the granular material through the micropores 12 on the surface of the first cooling pipe 113, and the air in the capillary network in the granular material is pushed towards the micropores 12 of the second cooling pipe 114. At the same time, the air in the second cooling pipe 114 is drawn out from the openings at both ends by the air flow mechanism 2, so that the second cooling pipe 114 is in a negative pressure state. The hot air in the capillary network in the granular material is drawn into the second cooling pipe 114 and drawn out by the air flow mechanism 2, thereby achieving the heat dissipation effect on the granular material. The output valve 112 is opened to discharge the cooled granular material, thereby achieving the discharge effect.

[0033] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style of the specification is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other implementations that can be understood by those skilled in the art.

[0034] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A rapid cooling device for powders and granules, characterized in that: The device includes a cooling tower (1) and an airflow mechanism (2). The cooling tower (1) has a cooling chamber (11) for containing granular materials such as powder and granules. The upper and lower ends of the cooling tower (1) are respectively equipped with an input valve (111) and an output valve (112) that communicate with the cooling chamber (11). The cooling chamber (11) is provided with a plurality of first cooling pipes (113) and a plurality of second cooling pipes (114). The two ends of the first cooling pipes (113) and the second cooling pipes (114) pass through the side wall of the cooling tower (1) to form openings. The surfaces of the first cooling pipes (113) and the second cooling pipes (114) are provided with a plurality of micropores (12) for airflow between the granular materials and the first cooling pipes (113) and the second cooling pipes (114). The airflow mechanism (2) inputs cold air into the openings at both ends of each of the first cooling pipes (113) and into the granular material in the cooling chamber (11) through the micropores (12) of the first cooling pipes (113). The air in the granular material enters the second cooling pipe (114) through the micropores (12) and the hot air in the second cooling pipe (114) is extracted by the airflow mechanism (2).

2. The rapid cooling device for powders and granules according to claim 1, characterized in that: The diameter of the micropore (12) is 0.15-0.5 mm.

3. The rapid cooling device for powders and granules according to claim 2, characterized in that: The first cooling pipe (113) is distributed longitudinally and transversely within the cooling tower (1), and the second cooling pipe (114) is distributed longitudinally and transversely within the cooling tower (1).

4. The rapid cooling device for powders and granules according to claim 1, characterized in that: The outer wall of the cooling tower (1) is provided with a first confluence jacket (13) and a second confluence jacket (14) that are connected to the air flow mechanism (2). The opening of each of the first cooling pipes (113) is connected to the inside of the first confluence jacket (13), and the opening of the second cooling pipe (114) is connected to the inside of the second confluence jacket (14).

5. The rapid cooling device for powders and granules according to claim 4, characterized in that: A partition (103) is provided between the first busbar sleeve (13) and the second busbar sleeve (14).

6. The rapid cooling device for powders and granules according to claim 1, characterized in that: The airflow mechanism (2) includes an air supply section (21) and an extraction section (22). The air supply section (21) is used to supply air into the openings at both ends of the first cooling pipe (113). The working end of the extraction section (22) is connected to a washing tank (23). The washing tank (23) is filled with water. One end of the washing tank (23) is connected to the openings at both ends of the second cooling pipe (114) through a connecting pipe (20).

7. The rapid cooling device for powders and granules according to claim 6, characterized in that: The washing tank (23) is equipped with a drain valve (231) at the bottom.

8. The rapid cooling device for powders and granules according to claim 6, characterized in that: The air supply unit (21) is an industrial air cooler, and the extraction unit (22) is a vacuum pump.

9. The rapid cooling device for powders and granules according to claim 1, characterized in that: The top of the cooling tower (1) is provided with an inspection port (10) that is connected to the cooling chamber (11).

10. The rapid cooling device for powders and granules according to claim 1, characterized in that: The cooling tower (1) is equipped with a level gauge (101) at the top and a thermocouple (102) at the bottom.

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