Cooling device used after powder coating processing and extrusion

Abstract

The utility model provides a cooling device used after powder coating processing extrusion, and relates to the technical field of powder coating processing, the cooling device comprises an extrusion device, a cooling box and a conveying belt, the top of the cooling box is communicated with an extrusion head of the extrusion device, the extrusion head is located in the cooling box, and the cooling box is provided with a water tank, a water pump and a spraying assembly. A refrigerator is arranged between the water tank and the cooling box, the water tank communicates with a water pump, the water pump communicates with the spraying assembly, through grooves are formed in the conveying belts, and the multiple conveying belts are arranged in the cooling box in the height direction at equal intervals in a staggered mode; the cooling device can effectively prolong the cooling time and further improve the cooling effect when the powder coating subjected to melt extrusion is cooled, meanwhile, water used after spraying cooling can be subjected to secondary cooling in time, the cooled water flows back into the water tank again to be recycled, impurities can be effectively removed while recycling is conducted, the concept of environmental protection is met, and the device is suitable for popularization and application. And water is saved.

Description

Technical Field

[0001] The utility model relates to the technical field of powder coating processing, in particular to a cooling device used for powder coating processing after extrusion. Background Art

[0002] Thermosetting powder coatings use thermosetting resins as film-forming materials, and add curing agents that react with crosslinking reactions to form insoluble and infusible hard coatings after heating. Since the resin used in thermosetting powder coatings is a prepolymer with a low degree of polymerization and a low molecular weight, the coating has good leveling properties and good decorative properties. Moreover, after curing, low molecular weight prepolymers can form network-crosslinked macromolecules, so the coating has good corrosion resistance and mechanical properties.

[0003] At present, the temperature of powder coating after being extruded from the melt extrusion equipment is relatively high, which is not conducive to the subsequent processing steps and needs to be cooled down. The current cooling is generally carried out by water cooling or air cooling.

[0004] Announcement No. CN218366409U proposes a thermosetting powder coating extruder with a cooling mechanism. The device achieves double cooling of the molten extruded material through a nozzle and a cold air blower, and the cooling effect is good. However, the device does not recycle the cooling water, and water is seriously wasted during the cooling process. The cooling effect needs to be further improved. Utility Model Content

[0005] The purpose of the utility model is to solve the problems raised in the above background technology, and then propose a cooling device for powder coating after extrusion processing.

[0006] The technical solution adopted by the utility model to solve its technical problems is:

[0007] A cooling device for powder coating after extrusion processing comprises an extrusion device, a cooling box and a conveyor belt. The top of the cooling box is connected to an extrusion head of the extrusion device and the extrusion head is inside the cooling box. A water tank, a water pump and a spray assembly are arranged on the cooling box. A refrigerator is arranged between the water tank and the cooling box and the water tank is connected to the water pump, which is connected to the spray assembly. A through groove is arranged on the conveyor belt. Several conveyor belts are arranged equidistantly and staggered in the height direction in the cooling box. The output end of the conveyor belt at the bottom is connected to an inclined material discharge trough, one end of which is outside the cooling box. A water storage tank is arranged at the bottom end of the cooling box. The water storage tank is connected to a filter on one side of the cooling box, the filter is connected to a circulation pump arranged on one side of the water storage tank, the circulation pump is connected to a heat exchanger fixed on the cooling box, and the heat exchanger is connected to the water tank.

[0008] This device can effectively prolong the cooling time and thus improve the cooling effect when cooling the molten extruded powder coating. At the same time, it can timely perform secondary cooling on the water used for spray cooling, and return it to the water tank for recycling after cooling. It can effectively remove impurities during recycling, which is in line with the concept of environmental protection and saves water.

[0009] Furthermore, a plurality of water leakage holes are provided on the bottom surface of the feed chute.

[0010] The above scheme can reduce the probability of water flowing to the outside of the cooling box during the spray cooling process through the water leakage hole.

[0011] Furthermore, a cooling air blower is arranged on the water tank, and the cooling air blower is connected to a ventilation pipe located at the bottom end of the water tank.

[0012] The above scheme can assist in further cooling while circulating water is introduced into the water tank through the air cooler, so as to ensure that the subsequent spray water meets the cooling temperature requirements and the cooling effect is better.

[0013] Furthermore, a plurality of heat dissipation holes are provided on the upper surface of the cooling box.

[0014] Furthermore, the cooling box is provided with a flow pipe connected to a plurality of heat dissipation holes, and one end of the flow pipe is connected to a condenser fixed on the cooling box.

[0015] The above scheme can discharge the high-temperature steam generated during the cooling process out of the cooling box through the heat dissipation holes, and then liquefy the outflowing high-temperature steam into small droplets through the condenser and then collect them in the collection container, thus avoiding the situation where a large amount of hot air is dissipated into the surrounding environment.

[0016] Furthermore, a liquid level sensor is arranged in the water tank.

[0017] The above scheme can detect the water volume in the water tank in real time through the liquid level sensor. When the water volume drops to the lower limit height of the liquid level sensor, it will feedback the signal to the controller, and then the controller will control the circulation pump and the heat exchanger to start the impurity removal cooling circulation process of the cooling wastewater.

[0018] Compared with the prior art, the beneficial effects of the utility model are:

[0019] Compared with the existing technology, this device can effectively prolong the cooling time and thus improve the cooling effect when cooling the molten extruded powder coating. At the same time, it can timely perform secondary cooling on the water used for spray cooling, and return it to the water tank for recycling after cooling. It can effectively remove impurities during recycling, which is in line with the concept of environmental protection and saves water. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1It is a schematic diagram of the overall structure of the utility model;

[0021] Reference numerals:

[0022] 1. Extruder head; 2. Cooling box; 21. Conveyor belt; 22. Feed chute; 23. Water storage tank; 24. Water tank; 25. Water pump; 26. Air cooler; 27. Heat dissipation hole; 28. Circulation pipe; 29. ​​Condenser; 31. Filter; 32. Circulation pump; 4. Heat exchanger. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. The utility model is further described in combination with the drawings and embodiments:

[0024] like Figure 1 As shown, a cooling device for powder coating after extrusion processing includes an extrusion device, a cooling box 2 and a conveyor belt 21. The top of the cooling box 2 is connected to the extrusion head 1 of the extrusion device and the extrusion head 1 is inside the cooling box 2. The other structures of the extrusion device except the extrusion head 1 are not shown in the figure. The cooling box 2 is provided with a water tank 24, a water pump 25 and a spray assembly inside the cooling box. A refrigerator is provided between the water tank 24 and the cooling box 2 and the water tank 24 is connected to the water pump 25. The water pump 25 is connected to the spray assembly. A through groove is provided on the conveyor belt 21. The above-mentioned extrusion device, water tank, water pump, spray assembly, conveyor belt and refrigerator are all disclosed in the thermosetting powder coating extruder with cooling mechanism proposed in the announcement number CN218366409U, and the same structure is used without improvement;

[0025] Specifically, a number of conveyor belts 21 are equidistantly and staggeredly arranged on the two inner walls of the cooling box 2 in the height direction. The output end of the lowest conveyor belt 21 is connected to an inclined discharge chute 22. One end of the discharge chute 22 is outside the cooling box 2. A water storage tank 23 is arranged at the bottom end of the interior of the cooling box 2. The water storage tank 23 is connected to a filter 31 on one side of the cooling box 2. The filter 31 is connected to a circulation pump 32 arranged on one side thereof. The circulation pump 32 is connected to a heat exchanger 4 fixed on the cooling box 2, and the heat exchanger 4 is connected to the water tank 24.

[0026] Specifically, a plurality of water leakage holes are provided on the bottom surface of the feed chute 22, which are not shown in the figure. The water leakage holes can reduce the probability of water flowing to the outside of the cooling box 2 during the spray cooling process.

[0027] In a further refinement of the embodiment of the utility model, a liquid level sensor is provided in the water tank 24, which is not shown in the figure. The water amount in the water tank 24 can be detected in real time by the liquid level sensor. When the water amount drops to the lower limit height of the liquid level sensor, a signal is fed back to the controller, and then the controller controls the circulation pump 32 and the heat exchanger 4 to start the impurity removal cooling circulation process of the cooling wastewater.

[0028] It should be noted that the extrusion equipment, the refrigerator, the conveyor belt 21, the water pump 25, the circulation pump 32 and the heat exchanger 4 are all electrically connected to the controller, which is not shown in the figure.

[0029] The workflow of this utility model:

[0030] First, the powder coating is melted and extruded through the extrusion equipment. Then, the molten material is extruded from the extruder head 1 and falls onto the top conveyor belt 21 to start uniform transmission. At this time, the controller controls the water pump 25 to extract the cooled water from the water tank 24 to the spray assembly. Then, the spray assembly can spray and cool the material efficiently. As the spraying proceeds, the material will be transferred to the lower conveyor belt 21 and continue to move. Since water can flow down from the through groove of the conveyor belt 21, it can contact the powder coating multiple times during the material transfer process to achieve cooling. The cooling effect of the material is good. Finally, the material is transferred from the bottom conveyor belt 21 to the feed trough 22 and finally to the fixed area outside the cooling box 2 to complete the collection, and then the next step of processing can be carried out;

[0031] As the cooling progresses, the water in the water tank 24 gradually decreases, and the water in the water storage tank 23 gradually increases. Then the controller controls the circulation pump 32 to work and then pumps the water in the water storage tank 23 into the filter 31 for impurity removal. After the impurity removal is completed, the water is passed into the heat exchanger 4 for effective cooling. After the cooling is completed, the water is finally re-passed into the water tank 24 for recycling. It should be noted that the refrigerator is synchronously turned on when the circulation pump 32 is working, and then the water circulated into the water tank 24 is double-cooled to ensure that the water temperature of the subsequent spraying meets the standard and effectively cools the extruded powder coating;

[0032] Compared with the existing technology, this device can effectively prolong the cooling time and thus improve the cooling effect when cooling the molten extruded powder coating. At the same time, it can timely perform secondary cooling on the water used for spray cooling, and return it to the water tank for recycling after cooling. It can effectively remove impurities during recycling, which is in line with the concept of environmental protection and saves water.

[0033] In some embodiments, Figure 1As shown, a cooling fan 26 is provided on the water tank 24, and the cooling fan 26 is connected to a ventilation pipe at the bottom end of the water tank 24, and the ventilation pipe is not shown in the figure; this embodiment can assist in further cooling while circulating water is passed into the water tank 24 through the cooling fan 26, so as to ensure that the subsequent spraying water meets the cooling temperature requirements and the cooling effect is better.

[0034] In other embodiments, Figure 1 As shown, the upper surface of the cooling box 2 is provided with a plurality of heat dissipation holes 27 and a flow pipe 28 connected to the heat dissipation holes 27, one end of the flow pipe 28 is connected to a condenser 29 fixed on the cooling box 2, and a collecting container is placed below the output end of the condenser 29, which is not shown in the figure; this embodiment can allow the high-temperature steam generated during the cooling process to be discharged from the cooling box 2 through the heat dissipation holes 27, and then the outflowing high-temperature steam is liquefied into small droplets through the condenser 29 and then collected in the collecting container, thereby preventing a large amount of hot air from being dissipated into the surrounding environment.

[0035] The above shows and describes the basic principles, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions in the specification are only to illustrate the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the protection required by the utility model. The scope of protection required by the utility model is defined by the attached claims and their equivalents.

Claims

1. A cooling device for powder coating after extrusion processing, comprising an extrusion device, a cooling box (2) and a conveyor belt (21), wherein the top of the cooling box (2) is connected to an extrusion head (1) of the extrusion device and the extrusion head (1) is located inside the cooling box (2), a water tank (24), a water pump (25) and a spray assembly are arranged on the cooling box (2), a refrigerator is arranged between the water tank (24) and the cooling box (2) and the water tank (24) is connected to the water pump (25), the water pump (25) is connected to the spray assembly, and a through groove is arranged on the conveyor belt (21), characterized in that: A plurality of conveyor belts (21) are arranged in an equidistant and staggered manner in the height direction in the cooling box (2); the output end of the conveyor belt (21) at the bottom is connected to an inclined material discharge chute (22); one end of the material discharge chute (22) is located outside the cooling box (2); a water storage tank (23) is arranged at the bottom end of the cooling box (2); the water storage tank (23) is connected to a filter (31) located on one side of the cooling box (2); the filter (31) is connected to a circulation pump (32) arranged on one side thereof; the circulation pump (32) is connected to a heat exchanger (4) fixed on the cooling box (2); and the heat exchanger (4) is connected to the water tank (24).

2. A cooling device for powder coating after extrusion processing according to claim 1, characterized in that: A plurality of water leakage holes are provided on the bottom surface of the feed chute (22).

3. A cooling device for powder coating after extrusion processing according to claim 1, characterized in that: The water tank (24) is provided with a cooling fan (26), and the cooling fan (26) is connected to a ventilation pipe located at the bottom end of the water tank (24).

4. The cooling device for powder coating after extrusion processing according to claim 1, characterized in that: A plurality of heat dissipation holes (27) are provided on the upper surface of the cooling box (2).

5. A cooling device for powder coating after extrusion processing according to claim 4, characterized in that: The cooling box (2) is provided with a flow pipe (28) connected to a plurality of heat dissipation holes (27); one end of the flow pipe (28) is connected to a condenser (29) fixedly mounted on the cooling box (2).

6. The cooling device for powder coating after extrusion processing according to claim 1, characterized in that: A liquid level sensor is arranged in the water tank (24).

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