Anti-blocking feeding device of extruder for environment-friendly powder coating

Abstract

The utility model relates to the field of environment-friendly powder coating production, and discloses an extruder anti-blocking feeding device for environment-friendly powder paints.The extruder anti-blocking feeding device comprises a hopper and a stirring discharging assembly, a discharging port is formed in the bottom of the hopper, the stirring discharging assembly comprises a rotating shaft, a stirring cutter and a driver, and the rotating shaft is transversely and rotationally connected to the hopper; the stirring cutter is fixedly connected to the rotating shaft and arranged in the hopper, and the driver drives the rotating shaft to drive the stirring cutter to rotate in the vertical plane in the hopper. The stirring cutter comprises a cutter body and a connecting plate, the cutter body is connected to the connecting plate, the connecting plate is connected to the rotating shaft, and the width of the cutter body is larger than that of the connecting plate so that a material leakage gap can be formed between the cutter body and the rotating shaft. The stirring cutter comprises a cutter body and a connecting plate, the cutter body is connected to the connecting plate, the connecting plate is connected to the rotating shaft, and the width of the cutter body is larger than that of the connecting plate so that a material leakage gap can be formed between the cutter body and the rotating shaft. The powder raw materials are prevented from entering the coating extrusion device from the hopper to be blocked.

Description

Technical Field

[0001] This application relates to the technical field of environmentally friendly powder coating production, and more specifically, to a feeding device for preventing material jamming in an extruder for environmentally friendly powder coatings. Background Art

[0002] During the operation of a powder coating extruder, raw materials such as powder raw materials (e.g., resin, additives, and pigments and fillers) are mixed and stirred, and then transported to the feeding port of the extrusion screw of the extruder. When the powder raw materials enter the extrusion screw, they are in a molten state. The reflux of water vapor generated at the feeding port of the extrusion screw easily causes the powder raw materials to bridge and jam in the hopper, resulting in the inability of the raw material powder in the hopper to be discharged normally. The extrusion screw is prone to idling and wear, shortening the service life of the extrusion screw.

[0003] For example, Patent CN216182648U (Application No.: CN202122467093.7) provides a powder coating extrusion device, which includes a device box body. One side of the device box body is movably connected to a feeding cover plate through a rotating pin. The rotating pin is arranged on the inner wall of the device box body. The feeding cover plate is used to control the opening and closing of the feeding port. It also includes: a crushing mechanism, which includes a turntable, spring columns, and cutting blades. The turntable is arranged in the device box body and is used to drive the crushing mechanism to rotate. The spring columns are evenly distributed inside the turntable. The cutting blades are connected to the ends of the spring columns away from the turntable and are used to cut the coating to prevent the coating from not becoming powdery; and a feeding roller, which is arranged in the device box body and is used to extrude the powder coating from the device box body. The powder coating extrusion device in Patent CN216182648U can crush the coating through the crushing mechanism, but it cannot solve the problem that the powder raw materials are prone to jamming when entering the coating extrusion device from the hopper. Summary of the Utility Model

[0004] The purpose of this application is to provide a feeding device for preventing material jamming in an extruder for environmentally friendly powder coatings, which solves the technical problem that the powder raw materials are prone to jamming when entering the coating extrusion device from the hopper, and achieves the technical effect of avoiding the jamming of the powder raw materials when entering the coating extrusion device from the hopper.

[0005] A feeding device for preventing material jamming in an extruder for environmentally friendly powder coatings provided by an embodiment of this application includes a hopper and a stirring and feeding assembly. The bottom of the hopper is provided with a discharge port. The stirring and feeding assembly includes a rotating shaft, stirring blades, and a driver. The rotating shaft is horizontally rotatably connected to the hopper. The stirring blades are fixedly connected to the rotating shaft and are arranged inside the hopper. The driver drives the rotating shaft to drive the stirring blades to rotate in the vertical plane inside the hopper.

[0006] In a possible implementation, the stirring blade includes a blade body and a connecting plate. The blade body is connected to the connecting plate, and the connecting plate is connected to the rotating shaft. The width of the blade body is greater than that of the connecting plate to form a material leakage gap between the blade body and the rotating shaft.

[0007] In another possible implementation, the bottom of the hopper is conical. The blade body has a first bevel edge and a second bevel edge. There is a gap between the first bevel edge, the second bevel edge and the bottom of the hopper. The inclination angles of the first bevel edge and the second bevel edge are the same as the inclination angle of the bottom of the hopper.

[0008] In another possible implementation, the cross-section of the connecting plate is diamond-shaped, and the cross-section of the connecting plate gradually shrinks from the rotating shaft to the cross-section of the blade body.

[0009] In another possible implementation, the cross-section of the connecting plate gradually shrinks proportionally from the rotating shaft to the cross-section of the blade body.

[0010] In another possible implementation, the cross-section of the blade body is diamond-shaped, and the thickness of the blade body gradually decreases from the connecting plate to the end of the blade body.

[0011] In another possible implementation, a discharge pipe is connected to the discharge port, and the end of the blade body extends into the discharge pipe.

[0012] In another possible implementation, the driver includes a motor and a speed reducer, and the motor is connected to the rotating shaft through the speed reducer.

[0013] In another possible implementation, the rotational speed of the driver driving the stirring blade is 5 to 10 r / min.

[0014] In another possible implementation, the ratio of the width of the material leakage gap to the length of the blade body in the radial direction of the rotating shaft is 0.2 to 0.8.

[0015] The beneficial effects of the embodiments of the present application compared with the prior art are as follows:

[0016] The embodiments of the present application provide a feeding device for preventing material jamming in an extruder for environmental protection powder coatings, including a hopper and a stirring and feeding assembly. The bottom of the hopper is provided with a discharge port. The stirring and feeding assembly includes a rotating shaft, a stirring blade and a driver. The rotating shaft is horizontally rotatably connected to the hopper. The stirring blade is fixedly connected to the rotating shaft and is arranged in the hopper. The driver drives the rotating shaft to drive the stirring blade to rotate in the vertical plane in the hopper. The feeding device for preventing material jamming in the extruder in the embodiments of the present application drives the rotating shaft to drive the stirring blade to rotate in the vertical plane in the hopper through the driver, which can promote the free fall of the raw material powder in the hopper, avoid the bridging and jamming of the raw material powder in the hopper, and improve the effect of extruding and discharging the raw material powder. Description of the Drawings

[0017] To more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0018] Figure 1 Schematic structural diagram of a feeding device for preventing material jamming in an extruder for environmentally friendly powder coatings provided by an embodiment of the present application;

[0019] Figure 2 Schematic side view structural diagram of a stirring blade provided by an embodiment of the present application;

[0020] Figure 3 Schematic cross-sectional structural diagram of a stirring blade at the connecting plate provided by an embodiment of the present application;

[0021] Figure 4 Schematic cross-sectional structural diagram of a stirring blade at the blade body provided by an embodiment of the present application;

[0022] In the figure, 1, hopper; 11, discharge port; 12, discharge pipe; 2, stirring and feeding assembly; 21, rotating shaft; 22, stirring blade; 221, blade body; 221a, first bevel edge; 221b, second bevel edge; 222, connecting plate; 223, material leakage gap; 23, driver; 231, motor; 232, reducer. Detailed implementation manners

[0023] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application more clearly understood, the present application will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0024] It should be noted that when a component or structure is referred to as "fixed to" or "arranged on" another component or structure, it can be directly on the other component or structure or indirectly on the other component or structure. When a component or structure is referred to as "connected to" another component or structure, it can be directly connected to the other component or structure or indirectly connected to the other component or structure.

[0025] It should be understood that the orientation or positional relationship indicated by terms such as "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or a component or structure referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present application.

[0026] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present application, the meaning of "a plurality" is two or more unless otherwise specifically defined.

[0027] The powder coating extrusion device in the prior art can crush the coating through a crushing mechanism, but it cannot solve the problem that the powder raw material is prone to jamming when entering the coating extrusion device from the hopper.

[0028] For the above reasons, the embodiment of the present application provides a feeding device for preventing jamming of an extruder for environmental protection powder coatings, including a hopper and a stirring and feeding component. An outlet is provided at the bottom of the hopper. The stirring and feeding component includes a rotating shaft, a stirring blade, and a driver. The rotating shaft is horizontally rotatably connected to the hopper. The stirring blade is fixedly connected to the rotating shaft and is arranged inside the hopper. The driver drives the rotating shaft to drive the stirring blade to rotate in the vertical plane inside the hopper. The feeding device for preventing jamming of the extruder in the embodiment of the present application drives the rotating shaft to drive the stirring blade to rotate in the vertical plane inside the hopper through the driver, which can promote the free fall of the raw material powder in the hopper, avoid bridging and jamming of the raw material powder in the hopper, and improve the effect of extruding the raw material powder.

[0029] In some scenarios, a feeding device for preventing jamming of an extruder for environmental protection powder coatings in the embodiment of the present application can be applied to the extrusion production of coating powder, and can avoid bridging and jamming of coating powder on the hopper of the coating powder extruder.

[0030] The following specifically describes a feeding device for preventing jamming of an extruder for environmental protection powder coatings provided by the embodiment of the present application with specific examples.

[0031] Figure 1It is a schematic flow chart of a feeding device for preventing material jamming in an extruder for environmentally friendly powder coatings provided by an embodiment of the present application. As shown in Figure 1, the feeding device for preventing material jamming in an extruder for environmentally friendly powder coatings includes a hopper 1 and a stirring and feeding assembly 2. The bottom of the hopper 1 is provided with a discharge port 11. The stirring and feeding assembly 2 includes a rotating shaft 21, stirring blades 22 and a driver 23. The rotating shaft 21 is horizontally rotatably connected to the hopper 1. The stirring blades 22 are fixedly connected to the rotating shaft 21 and are arranged inside the hopper 1. The driver 23 drives the rotating shaft 21 to drive the stirring blades 22 to rotate in the vertical plane inside the hopper 1.

[0032] As Figure 1 shown, the hopper 1 is used to hold the raw material powder of the environmentally friendly powder coating. The stirring and feeding assembly 2 is used to promote the feeding of the raw material powder in the hopper 1. The bottom of the hopper 1 is provided with a discharge port 11, and the discharge port 11 is used as the falling port of the raw material powder.

[0033] As Figure 1 shown, the stirring and feeding assembly 2 includes a rotating shaft 21, stirring blades 22 and a driver 23. The rotating shaft 21, the stirring blades 22 and the driver 23 cooperate with each other to complete the automatic feeding of the raw material powder. The rotating shaft 21 is horizontally rotatably connected to the hopper 1, so that the rotating shaft 21 can rotate in the vertical plane inside the hopper 1.

[0034] As Figure 1 shown, the stirring blades 22 are fixedly connected to the rotating shaft 21 and are arranged inside the hopper 1. The driver 23 drives the rotating shaft 21 to drive the stirring blades 22 to rotate in the vertical plane inside the hopper 1, so that when the stirring blades 22 rotate, they can promote the falling of the raw material powder in the hopper 1 and avoid the bridging of the raw material powder in the hopper 1.

[0035] The beneficial effects brought by the above implementation method are that when the stirring blades rotate, they can promote the falling of the raw material powder in the hopper, avoid the bridging of the raw material powder in the hopper, can stir the raw material powder up and down in the hopper, improve the smoothness effect of the raw material powder during feeding, can avoid the phenomenon of coking particles caused by the idling friction of the extruder screw, and improve the stability of the product.

[0036] In some implementation methods, the stirring blade 22 includes a blade body 221 and a connecting plate 222. The blade body 221 is connected to the connecting plate 222, and the connecting plate 222 is connected to the rotating shaft 21. The width of the blade body 221 is greater than the width of the connecting plate 222 to form a material leakage gap 223 between the blade body 221 and the rotating shaft 21.

[0037] As Figure 1 shown, the stirring blade 22 includes a blade body 221 and a connecting plate 222. The blade body 221 is used to directly stir the raw material powder, and the connecting plate 222 is used to connect the blade body 221 and the rotating shaft 21.

[0038] AsFigure 1 As shown, the cutter body 221 is connected to the connecting plate 222, the connecting plate 222 is connected to the rotating shaft 21, and the width of the cutter body 221 is greater than the width of the connecting plate 222 to form a material leakage gap 223 between the cutter body 221 and the rotating shaft 21. Thus, the raw material powder can be transferred on both sides of the cutter body 221 through the material leakage gap 223 in the hopper 1, reducing the resistance when the cutter body 221 stirs the raw material powder.

[0039] Structurally, there is a gap between the cutter body 221 and the hopper 1. The caked raw material powder can be extruded and crushed through the gap between the cutter body 221 and the hopper 1, preventing the raw material powder from bridging and caking.

[0040] The beneficial effects brought by the above implementation are that the resistance when the cutter body stirs the raw material powder can be reduced through the material leakage gap, and the stirring cutter 22 can be prevented from jamming during rotation.

[0041] The beneficial effects brought by the above implementation also lie in that the caked raw material powder can be extruded and crushed through the gap between the cutter body and the hopper, improving the effect of preventing the raw material powder from bridging and caking.

[0042] In some implementations, the bottom of the hopper 1 is conical. The cutter body 221 has a first inclined edge 221a and a second inclined edge 221b. There is a gap between the first inclined edge 221a, the second inclined edge 221b and the bottom of the hopper 1, and the inclination angles of the first inclined edge 221a and the second inclined edge 221b are the same as the inclination angle of the bottom of the hopper 1.

[0043] As Figure 1 shown, structurally, the bottom of the hopper 1 is conical. The cutter body 221 has a first inclined edge 221a and a second inclined edge 221b. There is a gap between the first inclined edge 221a, the second inclined edge 221b and the bottom of the hopper 1, and the inclination angles of the first inclined edge 221a and the second inclined edge 221b are the same as the inclination angle of the bottom of the hopper 1, enabling the first inclined edge 221a, the second inclined edge 221b and the hopper 1 to cooperate with each other to ensure the force uniformity of the first inclined edge 221a and the second inclined edge 221b when extruding the raw material powder.

[0044] The beneficial effects brought by the above implementation are that the forces on the first inclined edge and the second inclined edge are uniform when extruding the raw material powder, improving the stability of the stirring cutter during operation.

[0045] In some implementations, the cross-section of the connecting plate 222 is diamond-shaped, and the cross-section of the connecting plate 222 gradually shrinks from the rotating shaft 21 to the cross-section of the cutter body 221.

[0046] Figure 2 This is a schematic side view structure diagram of a stirring cutter provided by an embodiment of the present application.Figure 3 The cross-sectional structure diagram of a stirring blade at the connecting plate provided by an embodiment of the present application is shown as Figures 1 to 3 shown. The cross-section of the connecting plate 222 is diamond-shaped, and the raw material powder can move from the middle of the connecting plate 222 to the side of the connecting plate 222, which can reduce the resistance when the connecting plate 222 passes through the raw material powder.

[0047] Structurally, the cross-section of the connecting plate 222 gradually shrinks from the rotating shaft 21 to the cross-section of the blade body 221, so that the resistance of the raw material powder on the connecting plate 222 to the blade body 221 gradually decreases from the rotating shaft 21 to the direction of the blade body 221, and the resistance of the raw material powder to the connecting plate 222 is increased.

[0048] The beneficial effects brought by the above implementation method are that the cross-section of the connecting plate is diamond-shaped, and the cross-section of the connecting plate gradually shrinks from the rotating shaft to the cross-section of the blade body, reducing the resistance when the connecting plate passes through the raw material powder.

[0049] In some implementation methods, the cross-section of the connecting plate 222 gradually shrinks in equal proportion from the rotating shaft 21 to the cross-section of the blade body 221.

[0050] Structurally, the cross-section of the connecting plate 222 gradually shrinks in equal proportion from the rotating shaft 21 to the cross-section of the blade body 221, ensuring the uniformity of the resistance of the raw material powder at each position of the connecting plate 222. At the same time, the surface of the connecting plate is a smooth structure, improving the smoothness when the raw material powder passes through the connecting plate.

[0051] The beneficial effects brought by the above implementation method are that the uniformity of the resistance of the raw material powder at each position of the connecting plate is ensured, and the service life of the connecting plate is increased.

[0052] The beneficial effects brought by the above implementation method also lie in that the cross-section of the connecting plate gradually shrinks in equal proportion from the rotating shaft to the cross-section of the blade body, the surface of the connecting plate is a smooth structure, increasing the resistance when the raw material powder passes through the connecting plate, reducing the wear of the raw material powder on the connecting plate, and increasing the service life of the connecting plate.

[0053] In some implementation methods, the cross-section of the blade body 221 is diamond-shaped, and the thickness of the blade body 221 gradually decreases from the connecting plate 222 to the end of the blade body 221.

[0054] Figure 4 The cross-sectional structure diagram of a stirring blade at the blade body provided by an embodiment of the present application is shown as Figure 4 shown. The cross-section of the blade body 221 is diamond-shaped, and the thickness of the blade body 221 gradually decreases from the connecting plate 222 to the end of the blade body 221, so that the raw material powder can move from the middle of the blade body 221 to the side of the blade body 221, reducing the resistance of the raw material powder to the blade body 221.

[0055] The beneficial effect brought by the above implementation is that the raw material powder can move from the middle of the tool body towards the side of the tool body, reducing the resistance of the raw material powder to the tool body.

[0056] In some implementations, a discharge pipe 12 is connected to the discharge port 11, and the end of the tool body 221 extends into the discharge pipe 12.

[0057] Structurally, as Figure 1 shown, a discharge pipe 12 is connected to the discharge port 11, and the end of the tool body 221 extends into the discharge pipe 12, so that the raw material powder in the discharge pipe 12 can also avoid bridging through the extrusion of the end of the tool body 221, improving the flow rate of the raw material powder when flowing through the hopper.

[0058] The beneficial effect brought by the above implementation is that bridging can be avoided through the extrusion of the end of the tool body in the discharge pipe, improving the flow rate of the raw material powder.

[0059] In some implementations, the driver 23 includes a motor 231 and a speed reducer 232, and the motor 231 is connected to the rotating shaft 21 through the speed reducer 232.

[0060] As Figure 1 shown, structurally, the driver 23 includes a motor 231 and a speed reducer 232, and the motor 231 is connected to the rotating shaft 21 through the speed reducer 232. The speed reducer 232 can reduce the rotational speed when the motor 231 drives the stirring tool 22 to rotate, and can prevent the raw material powder from being thrown out of the hopper 1 when the rotational speed of the stirring tool 22 is too fast.

[0061] The beneficial effect brought by the above implementation is that it can prevent the raw material powder from being thrown out of the hopper when the rotational speed of the stirring tool is too fast, improving the use effect of the device.

[0062] In some implementations, the rotational speed of the driver 23 driving the stirring tool 22 is 5 to 10 r / min.

[0063] During operation, the rotational speed of the driver 23 driving the stirring tool 22 is 5 to 10 r / min, making the rotational speed of the stirring tool 22 relatively slow, and preventing the raw material powder from being thrown out of the hopper when the rotational speed of the stirring tool is too fast.

[0064] In some implementations, the ratio of the width of the material leakage gap 223 to the length of the tool body 221 in the radial direction of the rotating shaft 21 is 0.2 to 0.8.

[0065] As Figure 1As shown, structurally, the ratio of the width D1 of the material leakage gap 223 to the length D2 of the cutter body 221 in the radial direction of the rotating shaft 21 is 0.2 to 0.8. The reasonable ratio of the width D1 of the material leakage gap 223 to the length D2 of the cutter body 221 in the radial direction of the rotating shaft 21 can be determined according to the size of the hopper 1. By adjusting the size of the width of the material leakage gap 223, the stirring and pulverizing effect of the raw material powder can be ensured, and the resistance received by the cutter body 221 can be ensured to be within a reasonable range.

[0066] Exemplarily, the ratio of the width D1 of the material leakage gap 223 to the length D2 of the cutter body 221 in the radial direction of the rotating shaft 21 can be 0.2, 0.4, 0.6 or 0.8.

[0067] The beneficial effect brought by the above implementation manner is that by adjusting the size of the width of the material leakage gap, the stirring and pulverizing effect of the raw material powder can be ensured, and the resistance received by the cutter body can be ensured to be within a reasonable range.

[0068] The above are only the preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An anti-jamming feeding device for an extruder of environmentally friendly powder coatings, characterized in that: The invention comprises a hopper (1) and a stirring and discharging assembly (2). The bottom of the hopper (1) is provided with a discharging port (11). The stirring and discharging assembly (2) comprises a rotating shaft (21), a stirring blade (22) and a driver (23). The rotating shaft (21) is connected to the hopper (1) in a transversely rotatable manner. The stirring blade (22) is fixedly connected to the rotating shaft (21) and is arranged in the hopper (1). The driver (23) drives the rotating shaft (21) to drive the stirring blade (22) to rotate in a vertical plane in the hopper (1).

2. The anti-jamming feeding device for an extruder according to claim 1, characterized in that: The stirring blade (22) comprises a blade body (221) and a connecting plate (222), wherein the blade body (221) is connected to the connecting plate (222), and the connecting plate (222) is connected to the rotating shaft (21), and the width of the blade body (221) is greater than the width of the connecting plate (222) so as to form a material leakage gap (223) between the blade body (221) and the rotating shaft (21).

3. The anti-jamming feeding device for an extruder as claimed in claim 2, characterized in that: The bottom of the hopper (1) is conical, and the blade body (221) has a first bevel (221a) and a second bevel (221b), a gap is provided between the first bevel (221a), the second bevel (221b) and the bottom of the hopper (1), and the inclination angles of the first bevel (221a), the second bevel (221b) and the bottom of the hopper (1) are the same.

4. The anti-jamming feeding device for an extruder as claimed in claim 3, characterized in that: The cross section of the connecting plate (222) is rhombus-shaped, and the cross section of the connecting plate (222) gradually decreases from the rotating shaft (21) toward the cross section of the blade body (221).

5. The anti-jamming feeding device for an extruder as claimed in claim 4, characterized in that: The cross section of the connecting plate (222) gradually decreases in equal proportion from the rotating shaft (21) to the cross section of the blade body (221).

6. The anti-jamming feeding device for an extruder as claimed in claim 5, characterized in that: The cross section of the blade body (221) is rhombus-shaped, and the thickness of the blade body (221) gradually decreases from the connecting plate (222) to the end of the blade body (221).

7. The anti-jamming feeding device for an extruder as claimed in claim 6, characterized in that: The discharge port (11) is connected to a discharge pipe (12), and the end of the blade body (221) extends into the discharge pipe (12).

8. The anti-jamming feeding device for an extruder as claimed in claim 7, characterized in that: The driver (23) includes a motor (231) and a reducer (232), and the motor (231) is connected to the rotating shaft (21) via the reducer (232).

9. The anti-jamming feeding device for an extruder as claimed in claim 8, characterized in that: The driver (23) drives the stirring blade (22) at a rotation speed of 5 to 10 r / min.

10. The anti-jamming feeding device for an extruder according to claim 9, characterized in that: The ratio of the width of the leakage gap (223) to the length of the blade body (221) in the radial direction of the rotating shaft (21) is 0.2 to 0.8.

Images