Double-screw powder coating extruder

Abstract

The utility model discloses a double-screw powder coating extruder. The double-screw powder coating extruder comprises a feeding box, the feeding box comprises a feeding hole; a feeding assembly is arranged in the feeding box; a conveying channel is arranged at the bottom of the feeding assembly. The extrusion box is located at the bottom of the feeding box; the feeding box is communicated with the extrusion box through a conveying channel; an extrusion assembly is arranged in the extrusion box; a power assembly is arranged on the rear side of the extrusion box; a discharge hole is formed in the front side of the extrusion box; the extrusion assembly comprises a screw rod group; the screw rod group comprises a first screw rod and a second screw rod which are arranged in the extrusion box in parallel; the spiral blades on the first screw rod and the second screw rod are arranged in a mirror image manner; the rear end of the screw set is connected with the output end of the power assembly. By arranging the double screws which rotate reversely, the extrusion effect can be improved while raw materials are extruded out, the double screws can extrude the raw materials firstly, and then due to the fact that the double screws rotate outwards at the same time, the tearing effect on the raw materials is achieved, and mixing of multiple raw materials is better improved.

Description

Technical Field

[0001] The utility model relates to the technical field of powder coatings, in particular to a twin-screw powder coating extruder. Background Art

[0002] Powder coating is a solid powdered synthetic resin coating composed of solid resin and raw materials such as pigments, fillers and additives. During the production process of powder coating, corresponding extrusion equipment is required to extrude the raw materials of powder coating in preparation for subsequent cooling and tableting.

[0003] The commonly used extrusion equipment is a single screw extruder, which uses the conveying effect of the screw to extrude the raw materials. When the spiral blade rotates, the raw materials such as resin, filler, and additives are pushed and moved by the spiral blade. Before extrusion, the extrusion strength formed by the single screw is insufficient, resulting in low extrusion efficiency and uneven mixing of raw materials. Utility Model Content

[0004] The utility model aims to solve the problem of uneven mixing of raw materials and provides a twin-screw powder coating extruder.

[0005] A twin-screw powder coating extruder, comprising

[0006] A feed box; the feed box includes a feed port; a feed assembly is disposed in the feed box; a conveying channel is disposed at the bottom of the feed assembly;

[0007] Extrusion box; the extrusion box is located at the bottom of the feed box; the feed box is connected to the extrusion box through a conveying channel; an extrusion assembly is arranged in the extrusion box; a power assembly is arranged at the rear side of the extrusion box; a discharge port is arranged at the front side of the extrusion box;

[0008] The extrusion assembly includes a screw group; the screw group includes a first screw and a second screw arranged in parallel in an extrusion box; the spiral blades on the first screw and the second screw are arranged in mirror image; the rear end of the screw group is connected to the output end of the power assembly;

[0009] The power assembly includes a main motor; the output end of the main motor is connected to a reducer; the output end of the reducer is connected to a first main shaft; a first gear is sleeved on the first main shaft; a second main shaft is arranged parallel to one side of the first main shaft; a second gear is arranged on the second main shaft; the first gear and the second gear are meshed with each other; the output end of the first main shaft is connected to the first screw through a coupling; the output end of the second main shaft is connected to the second screw through a coupling.

[0010] Furthermore, the feed assembly includes an inclined slot located at the lower side of the feed port; two rotating wheels are arranged in parallel at the lower side of the inclined slot; a first driving motor is connected to one end of the rotating wheel; and the first driving motor is arranged on the outside of the feed box.

[0011] Furthermore, the two rotating wheels rotate in opposite directions.

[0012] Furthermore, the conveying channel is configured as a conical barrel; the top of the conveying channel is located at the bottom of the feed box; and the bottom of the conveying channel is located at the top of the extrusion box.

[0013] Furthermore, the extrusion box is provided with two sections, which are connected by bolts.

[0014] Furthermore, support feet are provided at the bottom of the extrusion box.

[0015] Furthermore, a fixed box is arranged at the front end of the extrusion box; two bearing seats are arranged in the fixed box; and the ends of the first screw and the second screw are both arranged in the bearing seats.

[0016] The beneficial effects of the utility model are:

[0017] By setting up counter-rotating twin screws, the extrusion effect can be increased while the raw materials are extruded. The twin screws can extrude the raw materials first, and then due to the simultaneous outward rotation, the raw materials can be torn apart, thereby better increasing the mixing of multiple raw materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of the utility model;

[0019] Figure 2 is a side sectional view;

[0020] Figure 3 It is a plan cross-sectional view.

[0021] In the figure, 1. feed box; 11. feed port; 12. feed assembly; 121. chute; 122. rotating wheel; 123. first drive motor; 13. conveying channel; 2. extrusion box; 21. extrusion assembly; 211. screw group; 2111. first screw; 2112. second screw; 22. power assembly; 221. main motor; 222. reducer; 223. first main shaft; 2231. first gear; 224. second main shaft; 2241. second gear; 23. discharge port; 24. support foot; 25. fixed box. DETAILED DESCRIPTION

[0022] The following describes the implementation of the present invention through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific implementations, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the following embodiments and features in the embodiments can be combined with each other without conflict.

[0023] It should be noted that the illustrations provided in the following embodiments are only schematic illustrations of the basic concept of the present invention, and thus the drawings only show components related to the present invention rather than being drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component may be changed at will, and the component layout may also be more complicated.

[0024] Example 1

[0025] like Figures 1 to 3 As shown:

[0026] A twin-screw powder coating extruder, comprising

[0027] A feed box 1; the feed box 1 comprises a feed port 11; a feed assembly 12 is arranged in the feed box 1; a conveying channel 13 is arranged at the bottom of the feed assembly 12;

[0028] Extrusion box 2; the extrusion box 2 is located at the bottom of the feed box 1; the feed box 1 is connected to the extrusion box 2 through the conveying channel 13; an extrusion assembly 21 is arranged in the extrusion box 2; a power assembly 22 is arranged at the rear side of the extrusion box 2; a discharge port 23 is arranged at the front side of the extrusion box 2;

[0029] The extrusion assembly 21 includes a screw group 211; the screw group 211 includes a first screw 2111 and a second screw 2112 arranged in parallel in the extrusion box 2; the spiral blades on the first screw 2111 and the second screw 2112 are arranged in mirror image; the rear end of the screw group 211 is connected to the output end of the power assembly 22;

[0030] The power assembly 22 includes a main motor 221; the output end of the main motor 221 is connected to a reducer 222; the output end of the reducer 222 is connected to a first main shaft 223; a first gear 2231 is sleeved on the first main shaft 223; a second main shaft 224 is parallelly arranged on one side of the first main shaft 223; a second gear 2241 is arranged on the second main shaft 224; the first gear 2231 and the second gear 2241 are meshed with each other; the output end of the first main shaft 223 is connected to the first screw 2111 through a coupling; the output end of the second main shaft 224 is connected to the second screw 2112 through a coupling.

[0031] The feed assembly 12 includes an inclined slot 121 located at the lower side of the feed port 11; two rotating wheels 122 are arranged in parallel at the lower side of the inclined slot 121; one end of the rotating wheel 122 is connected to a first driving motor 123; the first driving motor 123 is arranged outside the feed box 1.

[0032] The purpose of setting up this scheme is to pre-treat the mixed raw materials and increase the extrusion effect.

[0033] The two rotating wheels 122 rotate in opposite directions.

[0034] The conveying channel 13 is configured as a conical barrel; the top of the conveying channel 13 is located at the bottom of the feed box 1; and the bottom of the conveying channel 13 is located at the top of the extrusion box 2.

[0035] The extrusion box 2 is provided with two sections, which are connected by bolts.

[0036] The bottom of the extrusion box 2 is provided with supporting feet 24 .

[0037] A fixing box 25 is disposed at the front end of the extrusion box 2; two bearing seats are disposed in the fixing box 25; and the ends of the first screw rod 2111 and the second screw rod 2112 are both disposed in the bearing seats.

[0038] By setting up counter-rotating twin screws, the extrusion effect can be increased while the raw materials are extruded. The twin screws can extrude the raw materials first, and then due to the simultaneous outward rotation, the raw materials can be torn apart, thereby better increasing the mixing of multiple raw materials.

[0039] The above-mentioned embodiments only express the specific implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the utility model. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model.

Claims

1. A twin-screw powder coating extruder, characterized in that: include A feed box (1); the feed box (1) comprises a feed port (11); a feed assembly (12) is arranged in the feed box (1); a conveying channel (13) is arranged at the bottom of the feed assembly (12); An extrusion box (2); the extrusion box (2) is located at the bottom of the feed box (1); the feed box (1) is connected to the extrusion box (2) through a conveying channel (13); an extrusion assembly (21) is arranged in the extrusion box (2); a power assembly (22) is arranged at the rear side of the extrusion box (2); and a discharge port (23) is arranged at the front side of the extrusion box (2); The extrusion assembly (21) comprises a screw group (211); the screw group (211) comprises a first screw (2111) and a second screw (2112) which are arranged in parallel in the extrusion box (2); the spiral blades on the first screw (2111) and the second screw (2112) are arranged in a mirror image; the rear end of the screw group (211) is connected to the output end of the power assembly (22); The power assembly (22) comprises a main motor (221); the output end of the main motor (221) is connected to a reducer (222); the output end of the reducer (222) is connected to a first main shaft (223); a first gear (2231) is sleeved on the first main shaft (223); a second main shaft (224) is arranged parallel to one side of the first main shaft (223); a second gear (2241) is arranged on the second main shaft (224); the first gear (2231) and the second gear (2241) are meshed with each other; the output end of the first main shaft (223) is connected to a first screw (2111) via a coupling; and the output end of the second main shaft (224) is connected to a second screw (2112) via a coupling.

2. A twin-screw powder coating extruder according to claim 1, characterized in that: The feed assembly (12) comprises an inclined slot (121) located at the lower side of the feed port (11); two rotating wheels (122) are arranged in parallel at the lower side of the inclined slot (121); a first driving motor (123) is connected to one end of the rotating wheel (122); and the first driving motor (123) is arranged outside the feed box (1).

3. A twin-screw powder coating extruder according to claim 2, characterized in that: The two rotating wheels (122) rotate in opposite directions.

4. A twin-screw powder coating extruder according to claim 1, characterized in that: The conveying channel (13) is configured as a conical barrel; the top of the conveying channel (13) is located at the bottom of the feed box (1); and the bottom of the conveying channel (13) is located at the top of the extrusion box (2).

5. A twin-screw powder coating extruder according to claim 1, characterized in that: The extrusion box (2) is provided with two sections which are connected by bolts.

6. A twin-screw powder coating extruder according to claim 1, characterized in that: The bottom of the extrusion box (2) is provided with supporting feet (24).

7. A twin-screw powder coating extruder according to claim 1, characterized in that: A fixed box (25) is arranged at the front end of the extrusion box (2); two bearing seats are arranged in the fixed box (25); and the ends of the first screw rod (2111) and the second screw rod (2112) are both arranged in the bearing seats.

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