A screw extrusion device for preparing spray coating powder

Abstract

This utility model relates to the field of spray powder preparation technology and discloses a screw extrusion device for preparing spray powder. The screw extrusion device includes a base plate, an extrusion cylinder fixedly mounted on the upper surface of the base plate, a processing tank fixedly mounted on the upper surface of the base plate, and a discharge pipe connected to the bottom end of the processing tank, which is connected to the extrusion cylinder. Multiple support frames are fixedly mounted on the upper surface of the processing tank, and a storage tank is provided on the upper surface of each support frame. Four weighing sensors are fixedly mounted between the lower surface of each storage tank and the corresponding upper surface of the support frame. A blocking component is provided inside each storage tank, and a discharge pipe is connected to the lower surface of each storage tank. This device can quantitatively add and mix the raw materials for preparing spray powder and perform rapid processing during use.

Description

Technical Field

[0001] This utility model relates to the field of spray powder preparation technology, specifically a screw extrusion device for preparing spray powder. Background Technology

[0002] A powder coating screw extrusion unit is a device that heats and melts powder coatings, then pushes them out evenly and cools them to form a shape through the rotation of a screw. In practical applications, these powder coating screw extrusion units can effectively improve the production quality and efficiency of powder coatings, providing strong equipment support for powder coating production.

[0003] A search revealed an extrusion device for powder coating production, published under publication number CN 222590632 U. This device, belonging to the field of powder coating production technology, includes a base with a fixed frame at its top. A mixing tank is fixedly connected to the top of the fixed frame, and a heating ring is fixedly connected to the outer wall of the mixing tank. A stirring mechanism is installed inside the mixing tank, comprising an inner rod and an outer rod. The inner rod is rotatably connected to the inside of the outer rod, and a pair of scraper rods are fixedly connected to the outside of the outer rod, slidably connected to the inner wall of the mixing tank. This powder coating production extrusion device, through the interaction of a motor, rotating shaft, bevel gears, bevel gears, inner rod, extrusion head, bevel gear, outer rod, scraper rods, stirring rod, auger blades, and discharge pipe, achieves thorough mixing of the powder raw materials and prevents clogging during material feeding.

[0004] However, the above-mentioned device still has some shortcomings in use. It does not have a dedicated quantitative dispensing structure. The addition of raw materials (especially various additives) depends on manual premixing or rough measurement, which can easily lead to fluctuations in the final powder performance due to ratio errors, such as incomplete curing and coating color difference. Utility Model Content

[0005] To address the shortcomings of existing technologies, this invention provides a screw extrusion device for preparing spray coating powder. It solves the problems of the lack of a dedicated quantitative dispensing structure, the reliance on manual premixing or rough metering for the addition of raw materials (especially various additives), and the resulting fluctuations in the final powder performance due to ratio errors, such as incomplete curing and coating color differences.

[0006] This utility model provides the following technical solution: a screw extrusion device for preparing spray powder, including a base plate, an extrusion cylinder fixedly installed on the upper surface of the base plate, a processing barrel fixedly installed on the upper surface of the base plate, and a discharge pipe connected to the bottom end of the processing barrel, the discharge pipe being connected to the extrusion cylinder;

[0007] Multiple support frames are fixedly installed on the upper surface of the processing barrel. Each support frame has a storage barrel on its upper surface. Four weighing sensors are fixedly installed between the lower surface of each storage barrel and the upper surface of the corresponding support frame. Each storage barrel has a blocking component inside. Each storage barrel has a discharge pipe connected to its lower surface. The bottom end of each discharge pipe is connected to the processing barrel.

[0008] A heating ring is fixedly installed on the surface of the processing tank, and a stirring assembly is installed inside the processing tank.

[0009] Preferred technical solution 1: The stirring assembly includes a stirring rod rotatably mounted on the top wall inside the processing tank, two rows of stirring plates are fixedly connected to the surface of the stirring rod, a first motor is fixedly mounted on the upper surface of the processing tank, and the output end of the first motor passes through the processing tank and is fixedly connected to the stirring rod.

[0010] Preferred technical solution 2: A scraper is fixedly connected to one end of each of the two rows of stirring plates, and both scrapers are in contact with the inner wall of the processing tank. The bottom end of the stirring rod extends into the interior of the discharge pipe and is fixedly connected to a conveying auger.

[0011] Preferred technical solution 3: The blocking component includes an inclined plate fixedly installed on the inner wall of the storage tank. The surface of the inclined plate is provided with a groove. A baffle is slidably fitted inside the groove. A set of electric push rods is fixedly connected to the side of the storage tank. The output ends of the set of electric push rods all extend into the interior of the groove and are fixedly connected to the baffle.

[0012] Preferred technical solution four: A discharge auger is rotatably installed on one side wall of the extrusion cylinder, and a second motor is fixedly connected to the surface of the extrusion cylinder. The output end of the second motor extends into the interior of the extrusion cylinder and is fixedly connected to the discharge auger.

[0013] Preferred technical solution five: Each of the support frames has a movable groove on its surface, and each of the discharge pipes is a corrugated flexible hose, which can move inside the movable groove.

[0014] Compared with the prior art, this utility model provides a screw extrusion device for preparing spray powder, which has the following beneficial effects: In use, the base material and various additives and color additives required for making spray powder are stored in the storage tank. Then, by controlling the electric push rod on one side of the storage tank containing the base material to retract, the baffle retracts into the empty slot, so that the base material inside is discharged from the discharge pipe and transported to the processing tank. At the same time, the weight of the storage tank is monitored by a weighing sensor. When the weight of the discharged base material reaches a predetermined value, the electric push rod extends and drives the baffle to extend from the empty slot, so as to block the material and prevent the base material from falling further, thus completing the quantitative addition of the base material. Then, in the same way, various additives in other storage tanks are quantitatively added into the processing tank in a certain proportion to achieve quantitative addition of various raw materials.

[0015] Then, the forward rotation of the first motor drives the stirring rod and stirring plate to mix the various raw materials inside the processing tank. At the same time, the heating ring heats the raw materials inside the processing tank, turning them into a liquid state. After the raw materials are processed, the reverse rotation of the first motor drives the conveying auger to rotate, discharging the liquid raw materials inside the processing tank from the discharge pipe into the extrusion cylinder to avoid blockage during discharge. Then, the rotation of the second motor drives the discharge auger to extrude the raw materials, which is convenient and fast.

[0016] This device allows for the quantitative addition and mixing of raw materials for preparing spray powder, and enables rapid processing. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 This is a structurally exploded view of the storage tank and processing tank of this utility model.

[0019] Figure 3 This is a cross-sectional view of the internal structure of the storage bin of this utility model;

[0020] Figure 4 This is a cross-sectional view of the internal structure of the processing tank of this utility model;

[0021] Figure 5 This is a cross-sectional view of the internal structure of the extrusion cylinder of this utility model.

[0022] In the diagram: 1. Base plate; 2. Extrusion cylinder; 3. Processing tank; 4. Discharge pipe; 5. Storage tank; 6. Weighing sensor; 7. Heating ring; 8. Discharge pipe; 9. Stirring rod; 10. Stirring plate; 11. First motor; 12. Scraper; 13. Conveying auger; 14. Inclined plate; 15. Empty trough; 16. Baffle; 17. Electric push rod; 18. Discharge auger; 19. Second motor; 20. Movable trough; 21. Support frame. Detailed Implementation

[0023] Please see Figure 1-5 ,

[0024] Example 1: A screw extrusion device for preparing spray powder includes a base plate 1, an extrusion cylinder 2 fixedly installed on the upper surface of the base plate 1, a processing barrel 3 fixedly installed on the upper surface of the base plate 1, and a discharge pipe 4 connected to the bottom end of the processing barrel 3, which is connected to the extrusion cylinder 2.

[0025] Multiple support frames 21 are fixedly installed on the upper surface of the processing tank 3. Each support frame 21 has a storage tank 5 on its upper surface. Four weighing sensors 6 are fixedly installed between the lower surface of each storage tank 5 and the upper surface of the corresponding support frame 21. Each storage tank 5 has a blocking component inside. Each storage tank 5 has a discharge pipe 8 connected to its lower surface. The bottom end of each discharge pipe 8 is connected to the processing tank 3.

[0026] A heating ring 7 is fixedly installed on the surface of the processing tank 3, and a stirring assembly is installed inside the processing tank 3.

[0027] Example 2: The difference between this example and Example 1 is that the stirring assembly includes a stirring rod 9 rotatably mounted on the top wall inside the processing tank 3. Two rows of stirring plates 10 are fixedly connected to the surface of the stirring rod 9. A first motor 11 is fixedly mounted on the upper surface of the processing tank 3. The output end of the first motor 11 passes through the connected processing tank 3 and is fixedly connected to the stirring rod 9, which facilitates the mixing of the raw materials inside the processing tank 3.

[0028] Example 3: The difference between this example and Example 1 is that each of the two rows of stirring plates 10 is fixedly connected to a scraper 12 at one end, and both scrapers 12 are in contact with the inner wall of the processing tank 3. The bottom end of the stirring rod 9 extends into the inside of the discharge pipe 4 and is fixedly connected to a conveying auger 13 to prevent the raw materials from adhering to the inner wall of the processing tank 3, and at the same time facilitate the discharge of the raw materials from the discharge pipe 4 to avoid blockage.

[0029] Example 4: The difference between this example and Example 1 is that the blocking component includes an inclined plate 14 fixedly installed on the inner wall of the storage tank 5. The surface of the inclined plate 14 is provided with a slot 15. A baffle 16 is slidably fitted inside the slot 15. A set of electric push rods 17 are fixedly connected to the side of the storage tank 5. The output ends of the set of electric push rods 17 all extend into the interior of the slot 15 and are fixedly connected to the baffle 16.

[0030] Example 5: The difference between this example and Example 1 is that a discharge auger 18 is rotatably installed on one side wall inside the extrusion cylinder 2, and a second motor 19 is fixedly connected to the surface of the extrusion cylinder 2. The output end of the second motor 19 extends into the interior of the extrusion cylinder 2 and is fixedly connected to the discharge auger 18.

[0031] Example 6: The difference between this example and Example 1 is that each support frame 21 has a movable groove 20 on its surface, and each discharge pipe 8 is a corrugated flexible hose that can move inside the movable groove 20.

[0032] In summary, this screw extrusion device for preparing spray powder, during use, stores the base material, various additives, and color additives required for making the spray powder in the storage tank 5. Then, by controlling the retraction of the electric push rod 17 on one side of the storage tank 5 containing the base material, the baffle 16 retracts into the empty trough 15, causing the base material inside to be discharged from the discharge pipe 8 and transported to the processing tank 3. At the same time, the weight of the storage tank 5 is monitored by the weighing sensor 6. When the weight of the discharged base material reaches a predetermined value, the electric push rod 17 extends, causing the baffle 16 to extend from the empty trough 15, blocking the material and preventing the base material from falling further, thus completing the quantitative addition of the base material. Then, in the same way, various additives from other storage tanks 5 are quantitatively added into the processing tank 3 in a certain proportion to achieve quantitative addition of various raw materials.

[0033] Then, the forward rotation of the first motor 11 drives the stirring rod 9 and the stirring plate 10 to mix the various raw materials inside the processing tank 3. At the same time, the heating ring 7 heats the raw materials inside the processing tank 3, and the raw materials inside the processing tank 3 will become liquid. After the raw materials are processed, the reverse rotation of the first motor 11 drives the conveying auger 13 to rotate, and discharges the liquid raw materials inside the processing tank 3 from the discharge pipe 4 into the extrusion cylinder 2 to avoid blockage during discharge. Then, the rotation of the second motor 19 drives the discharge auger 18 to rotate and extrude the raw materials, which is convenient and fast.

[0034] This device allows for the quantitative addition and mixing of raw materials for preparing spray powder, and enables rapid processing.

Claims

1. A screw extrusion device for the production of a spray powder, comprising a base plate (1), characterized in that: An extrusion cylinder (2) is fixedly installed on the upper surface of the base plate (1), and a processing barrel (3) is fixedly installed on the upper surface of the base plate (1). A discharge pipe (4) is connected to the bottom end of the processing barrel (3), and the discharge pipe (4) is connected to the extrusion cylinder (2). The upper surface of the processing tank (3) is fixedly equipped with multiple support frames (21), and each support frame (21) is provided with a storage tank (5) on its upper surface. Four weighing sensors (6) are fixedly installed between the lower surface of each storage tank (5) and the upper surface of the corresponding support frame (21). Each storage tank (5) is provided with a blocking component inside. Each storage tank (5) is connected to a discharge pipe (8) on its lower surface. The bottom end of each discharge pipe (8) is connected to the processing tank (3). A heating ring (7) is fixedly installed on the surface of the processing tank (3), and a stirring assembly is provided inside the processing tank (3).

2. A screw extrusion device for producing a spray powder according to claim 1, characterized in that: The stirring assembly includes a stirring rod (9) rotatably mounted on the top wall inside the processing tank (3). Two rows of stirring plates (10) are fixedly connected to the surface of the stirring rod (9). A first motor (11) is fixedly mounted on the upper surface of the processing tank (3). The output end of the first motor (11) passes through the processing tank (3) and is fixedly connected to the stirring rod (9).

3. A screw extrusion device for producing a spray powder according to claim 2, characterized in that: Each of the two rows of stirring plates (10) is fixedly connected to one end of a scraper (12), and both scrapers (12) are in contact with the inner wall of the processing tank (3). The bottom end of the stirring rod (9) extends into the interior of the discharge pipe (4) and is fixedly connected to a conveying auger (13).

4. A screw extrusion device for producing a spray powder according to claim 1, characterized in that: The blocking assembly includes an inclined plate (14) fixedly installed on the inner wall of the storage bin (5). The surface of the inclined plate (14) is provided with a slot (15). A baffle (16) is slidably fitted inside the slot (15). A set of electric push rods (17) is fixedly connected to the side of the storage bin (5). The output ends of the set of electric push rods (17) extend into the interior of the slot (15) and are fixedly connected to the baffle (16).

5. A screw extrusion device for producing a spray powder according to claim 1, characterized in that: A discharge auger (18) is rotatably mounted on one side wall inside the extrusion cylinder (2). A second motor (19) is fixedly connected to the surface of the extrusion cylinder (2). The output end of the second motor (19) extends into the interior of the extrusion cylinder (2) and is fixedly connected to the discharge auger (18).

6. A screw extrusion device for producing a spray powder according to claim 1, characterized in that: Each of the support frames (21) has a movable groove (20) on its surface, and each of the discharge pipes (8) is a corrugated hose, which can move inside the movable groove (20).

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