Double-screw extruder for biodegradable tableware

Abstract

The utility model discloses a double-screw extruder for biodegradable tableware, and particularly relates to the technical field of equipment for the biodegradable tableware, the double-screw extruder comprises an equipment main body, two groups of screw mechanisms are rotatably mounted in the equipment main body, a feeding mechanism is fixedly mounted at the top of the equipment main body, each screw mechanism comprises a main shaft, and the main shaft is fixedly mounted on the equipment main body. And a plurality of threaded elements are slidably mounted on the outer wall of the main shaft. According to the double-screw extruder for the biodegradable tableware, a locking ball is extruded into a locking groove through the outer wall of a sliding rod, and a locking sleeve is fixed into a first mounting sleeve through cooperation between the locking groove and the locking ball; the thread element and the stirring element or other elements are fixedly installed on the outer wall of the main shaft through the fixing cap and the sliding sleeve, in the process, force far away from the locking ball is provided for the sliding rod through the spring, and the problems that when technological parameters need to be adjusted, the whole screw needs to be replaced, cost is high, and time is consumed are solved in the mode that various elements are flexibly replaced.

Description

Technical Field

[0001] This utility model relates to the technical field of equipment for biodegradable tableware, specifically a twin-screw extruder for biodegradable tableware. Background Technology

[0002] Biodegradable tableware refers to tableware that can decompose into harmless substances such as water, carbon dioxide, and biomass in the natural environment through the action of microorganisms. These products aim to reduce the long-term environmental pollution caused by traditional plastic tableware. With technological advancements and increased societal emphasis on sustainable development, biodegradable tableware is gradually becoming an important option in the disposable products sector.

[0003] Twin-screw extruders are highly efficient plastic processing equipment capable of handling a variety of materials, widely used in the manufacture of biodegradable tableware. These machines have two meshing screws rotating within a common barrel, providing superior mixing, plasticizing, and conveying performance. Twin-screw extruders are one of the ideal choices for producing high-quality biodegradable tableware, not only improving production efficiency but also ensuring product uniformity and consistency. With increasing environmental awareness and technological advancements, this type of equipment will play an increasingly important role in the field of sustainable materials processing.

[0004] In existing twin-screw extruders, the internal screw is usually a single piece. While this meets the usage requirements to some extent, it has been found in actual use that once the design of the integral screw is determined, it is difficult to change. When it is necessary to adjust the process parameters or adapt to different material characteristics, the entire screw needs to be replaced, which is not only costly but also time-consuming. Utility Model Content

[0005] The purpose of this invention is to provide a twin-screw extruder for biodegradable tableware to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a twin-screw extruder for biodegradable tableware, comprising a main body, two sets of screw mechanisms rotatably mounted inside the main body, a feeding mechanism fixedly mounted on the top of the main body, each screw mechanism including a main shaft, a plurality of threaded elements slidably mounted on the outer wall of the main shaft, a first mounting sleeve threadedly connected inside the main shaft, a locking groove provided inside the first mounting sleeve, a locking sleeve movably mounted inside the first mounting sleeve, a sliding rod slidably mounted inside the locking sleeve, a plurality of locking balls movably mounted inside the locking sleeve, an unlocking groove provided on the outer wall of the sliding rod, a spring sleeved on the outer wall of the sliding rod, and the spring movably mounted inside the locking sleeve.

[0007] Preferably, a sliding sleeve is slidably installed on the outer wall of the first mounting sleeve, and a fixing cap is fixedly installed on the outer wall of the locking sleeve.

[0008] Preferably, two sets of heating rods are fixedly installed inside the main body of the device, the main shaft is rotatably installed on the outer wall of the heating rods, and a stirring element is movably installed on the outer wall of the main shaft.

[0009] Preferably, a first motor is fixedly installed on the top of the main body of the device, and the output shaft of the first motor is fixedly connected to one side of the screw mechanism through a coupling.

[0010] Preferably, the feeding mechanism includes a mixing tank, a second mounting sleeve is rotatably mounted inside the mixing tank, a feeding hopper is fixedly mounted on the top of the second mounting sleeve, a spreading disc is fixedly mounted inside the second mounting sleeve, a mixing disc is rotatably mounted on the outer wall of the second mounting sleeve, the mixing disc is rotatably mounted inside the mixing tank, a plurality of mixing blades are fixedly mounted on the bottom of the mixing disc, a first bevel gear is rotatably mounted on the top of the mixing tank, a second bevel gear is fixedly mounted on the outer wall of the second mounting sleeve, and a third bevel gear is fixedly mounted on the outer wall of the mixing disc. The second bevel gear meshes with the top of the first bevel gear, and the third bevel gear meshes with the bottom of the first bevel gear.

[0011] Preferably, a second motor is fixedly installed on the top of the main body of the equipment, and the output shaft of the second motor is fixedly connected to one side of the first bevel gear through a coupling.

[0012] Preferably, a pusher screw is fixedly connected to the bottom of the second mounting sleeve.

[0013] Compared with the prior art, the beneficial effects of this utility model are: the twin-screw extruder for biodegradable tableware;

[0014] 1. The locking ball is pressed into the locking groove by the outer wall of the sliding rod. The locking sleeve is fixed inside the first mounting sleeve by the cooperation between the locking groove and the locking ball. The threaded element, stirring element or other elements are fixedly installed on the outer wall of the main shaft by the fixing cap and the sliding sleeve. When it is necessary to replace the element, simply press the sliding rod to release the locking groove and the locking ball to complete the unlocking. In the above process, the spring provides a force away from the locking ball to the sliding rod. By flexibly replacing various elements, the problem of needing to replace the entire screw when adjusting process parameters or adapting to different material characteristics, which is costly and time-consuming, is solved.

[0015] The screw mechanism is heated from the inside by heating rods, which, together with the main body of the equipment, heats the outside of the screw mechanism, so that the raw materials can be melted quickly and the production efficiency can be improved. The first motor provides power for the rotation of the screw mechanism, and the stirring element stirs the material on the outer wall of the screw mechanism to improve the mixing effect.

[0016] 2. The first bevel gear, the second bevel gear, and the third bevel gear are engaged to drive the second mounting sleeve and the mixing plate to rotate in opposite directions. The material enters the inner wall of the second mounting sleeve through the feed hopper and is then sprinkled into the top of the mixing tank through the spreading plate and then falls naturally. During this process, the material is stirred by the cooperation between the mixing plate and the mixing blades. The material is premixed before entering the main body of the equipment to ensure that the various components are more evenly distributed.

[0017] The second motor powers the rotation of the first bevel gear, and the pusher screw provides a stable material flow rate, ensuring that the material enters the main body of the equipment at a constant speed and avoiding production fluctuations caused by uneven feeding. Attached Figure Description

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

[0019] Figure 2 This is a cross-sectional view of the structure of this utility model;

[0020] Figure 3 This is a partial structural schematic diagram of the screw mechanism of this utility model;

[0021] Figure 4 This utility model Figure 3 Enlarged view of point A in the middle;

[0022] Figure 5 This is a schematic diagram of the feeding mechanism of this utility model.

[0023] In the diagram: 1. Main body of the equipment; 2. Screw mechanism; 201. Main shaft; 202. First mounting sleeve; 203. Locking groove; 204. Locking sleeve; 205. Sliding rod; 206. Locking ball; 207. Unlocking groove; 208. Spring; 209. Fixing cap; 210. Sliding sleeve; 211. Threaded element; 3. Feeding mechanism; 301. Mixing tank; 302. Second mounting sleeve; 303. Feed hopper; 304. Spreading disc; 305. Mixing disc; 306. Mixing blade; 307. First bevel gear; 308. Second bevel gear; 309. Third bevel gear; 310. Pushing screw; 4. First motor; 5. Second motor; 6. Mixing element; 7. Heating rod. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Please see Figure 1-4 This utility model provides a technical solution: a twin-screw extruder for biodegradable tableware, comprising a main body 1, two sets of screw mechanisms 2 rotatably mounted inside the main body 1, and a feeding mechanism 3 fixedly mounted on the top of the main body 1. Each screw mechanism 2 includes a main shaft 201, with several threaded elements 211 slidably mounted on the outer wall of the main shaft 201. A first mounting sleeve 202 is threadedly connected inside the main shaft 201. A locking groove 203 is provided inside the first mounting sleeve 202. A locking sleeve 204 is movably mounted inside the first mounting sleeve 202. A sliding rod 205 is slidably mounted inside the locking sleeve 204. Several locking balls 206 are movably mounted inside the locking sleeve 204. A release groove 207 is provided on the outer wall of the sliding rod 205. A spring 208 is sleeved on the outer wall of the sliding rod 205. The first mounting sleeve 202 is slidably mounted on the outer wall of the first mounting sleeve 202, and the locking sleeve 204 is fixedly mounted on the outer wall of the locking sleeve 204. Two sets of heating rods 7 are fixedly mounted inside the main body 1. The main shaft 201 is rotatably mounted on the outer wall of the heating rods 7. The stirring element 6 is movably mounted on the outer wall of the main shaft 201. The heating rods 7 heat the screw mechanism 2 from the inside, which works in conjunction with the main body 1 to heat the outside of the screw mechanism 2, so that the raw materials melt quickly and improve production efficiency. The stirring element 6 stirs the material on the outer wall of the screw mechanism 2 to improve the mixing effect. The first motor 4 is fixedly mounted on the top of the main body 1. The output shaft of the first motor 4 is fixedly connected to one side of the screw mechanism 2 through a coupling. The first motor 4 provides power for the rotation of the screw mechanism 2.

[0026] The specific implementation method is as follows: the locking ball 206 is pressed into the locking groove 203 by the outer wall of the slide rod 205. The locking sleeve 204 is fixed inside the first mounting sleeve 202 by the cooperation between the locking groove 203 and the locking ball 206. The threaded element 211 and the stirring element 6 or other elements are fixedly installed on the outer wall of the main shaft 201 by the fixing cap 209 and the slide sleeve 210. When it is necessary to replace the element, simply press the slide rod 205 to release the locking groove 207 from the locking ball 206 to complete the unlocking. In the above process, the spring 208 provides a force away from the locking ball 206 to the slide rod 205. By flexibly replacing various elements, the problem of needing to replace the entire screw when adjusting process parameters or adapting to different material characteristics, which is costly and time-consuming, is solved.

[0027] Please see Figure 1-5This utility model provides a technical solution: a twin-screw extruder for biodegradable tableware, wherein the feeding mechanism 3 includes a mixing tank 301, a second mounting sleeve 302 is rotatably mounted inside the mixing tank 301, a feeding hopper 303 is fixedly mounted on the top of the second mounting sleeve 302, a spreading disc 304 is fixedly mounted inside the second mounting sleeve 302, a mixing disc 305 is rotatably mounted on the outer wall of the second mounting sleeve 302, the mixing disc 305 is rotatably mounted inside the mixing tank 301, a plurality of mixing blades 306 are fixedly mounted on the bottom of the mixing disc 305, a first bevel gear 307 is rotatably mounted on the top of the mixing tank 301, and a second bevel gear is fixedly mounted on the outer wall of the second mounting sleeve 302. 308. A third bevel gear 309 is fixedly installed on the outer wall of the mixing plate 305. The second bevel gear 308 is meshed with the top of the first bevel gear 307, and the third bevel gear 309 is meshed with the bottom of the first bevel gear 307. A second motor 5 is fixedly installed on the top of the main body 1. The output shaft of the second motor 5 is fixedly connected to one side of the first bevel gear 307 through a coupling. The second motor 5 provides power for the rotation of the first bevel gear 307. A pusher screw 310 is fixedly connected to the bottom of the second mounting sleeve 302. The pusher screw 310 provides a stable material flow rate to ensure that the material enters the main body 1 at a constant speed and avoids production fluctuations caused by uneven feeding.

[0028] The specific implementation method is as follows: the cooperation between the first bevel gear 307, the second bevel gear 308, and the third bevel gear 309 drives the second mounting sleeve 302 and the mixing plate 305 to rotate in opposite directions. The material enters the inner wall of the second mounting sleeve 302 through the feed hopper 303 and is then sprinkled into the top of the mixing tank 301 through the spreading plate 304 and then falls naturally. During this process, the material is stirred by the cooperation between the mixing plate 305 and the mixing blade 306. The material is premixed before entering the main body 1 of the equipment to ensure that the various components such as polymers, fillers, and additives are more evenly distributed.

[0029] Working principle: When using this biodegradable twin-screw extruder for tableware, the locking ball 206 is squeezed into the locking groove 203 through the outer wall of the slide bar 205. The locking sleeve 204 is fixed inside the first mounting sleeve 202 through the cooperation between the locking groove 203 and the locking ball 206. The threaded element 211 and the stirring element 6 or other elements are fixedly installed on the outer wall of the main shaft 201 through the fixing cap 209 and the slide sleeve 210. When it is necessary to replace the element, simply press the slide bar 205 to release the locking groove 207 from the locking ball 206 to complete the unlocking. In the above process, the spring 208 provides a force away from the locking ball 206 to the slide bar 205. By flexibly replacing various elements, the problem of needing to replace the entire screw when adjusting process parameters or adapting to different material characteristics, which is costly and time-consuming, is solved.

[0030] The screw mechanism 2 is heated from the inside by the heating rod 7, which works in conjunction with the external heating of the screw mechanism 2 by the main body of the equipment 1 to quickly melt the raw materials and improve production efficiency. The first motor 4 provides power for the rotation of the screw mechanism 2, and the stirring element 6 stirs the material on the outer wall of the screw mechanism 2 to improve the mixing effect.

[0031] The first bevel gear 307, the second bevel gear 308, and the third bevel gear 309 work together to drive the second mounting sleeve 302 and the mixing plate 305 to rotate in opposite directions. The material enters the inner wall of the second mounting sleeve 302 through the feed hopper 303 and is then sprinkled into the top of the mixing tank 301 through the spreading plate 304 and then falls naturally. During this process, the material is stirred by the cooperation between the mixing plate 305 and the mixing blade 306. The material is premixed before entering the main body of the equipment 1 to ensure that the various components such as polymers, fillers, and additives are more evenly distributed.

[0032] The second motor 5 provides power to rotate the first bevel gear 307, and the pusher screw 310 provides a stable material flow rate, ensuring that the material enters the main body of the equipment 1 at a constant speed and avoiding production fluctuations caused by uneven feeding.

[0033] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A twin-screw extruder for biodegradable tableware, comprising a main body (1), wherein two sets of screw mechanisms (2) are rotatably mounted inside the main body (1), and a feeding mechanism (3) is fixedly mounted on the top of the main body (1), characterized in that: The screw mechanism (2) includes a main shaft (201), a plurality of threaded elements (211) are slidably mounted on the outer wall of the main shaft (201), a first mounting sleeve (202) is threadedly connected to the inside of the main shaft (201), a locking groove (203) is provided inside the first mounting sleeve (202), a locking sleeve (204) is movably mounted inside the first mounting sleeve (202), a slide rod (205) is slidably mounted inside the locking sleeve (204), a plurality of locking balls (206) are movably mounted inside the locking sleeve (204), an unlocking groove (207) is provided on the outer wall of the slide rod (205), and a spring (208) is sleeved on the outer wall of the slide rod (205), and the spring (208) is movably mounted inside the locking sleeve (204).

2. The twin-screw extruder for biodegradable tableware according to claim 1, characterized in that, The outer wall of the first mounting sleeve (202) is slidably mounted with a sliding sleeve (210), and the outer wall of the locking sleeve (204) is fixedly mounted with a fixing cap (209).

3. The twin-screw extruder for biodegradable tableware according to claim 1, characterized in that, Two sets of heating rods (7) are fixedly installed inside the main body (1) of the equipment. The main shaft (201) is rotatably installed on the outer wall of the heating rods (7). A stirring element (6) is movably installed on the outer wall of the main shaft (201).

4. The twin-screw extruder for biodegradable tableware according to claim 1, characterized in that, The top of the main body (1) of the equipment is fixedly installed with a first motor (4), and the output shaft of the first motor (4) is fixedly connected to one side of the screw mechanism (2) through a coupling.

5. A twin-screw extruder for biodegradable tableware according to claim 1, characterized in that, The feeding mechanism (3) includes a mixing tank (301), a second mounting sleeve (302) is rotatably mounted inside the mixing tank (301), a feeding hopper (303) is fixedly mounted on the top of the second mounting sleeve (302), a dispensing disc (304) is fixedly mounted inside the second mounting sleeve (302), and a mixing disc (305) is rotatably mounted on the outer wall of the second mounting sleeve (302). The mixing disc (305) is rotatably mounted inside the mixing tank (301). 5) Several stirring blades (306) are fixedly installed at the bottom of the stirring tank (301). A first bevel gear (307) is rotatably installed at the top of the stirring tank (301). A second bevel gear (308) is fixedly installed on the outer wall of the second mounting sleeve (302). A third bevel gear (309) is fixedly installed on the outer wall of the stirring plate (305). The second bevel gear (308) is meshed with the top of the first bevel gear (307), and the third bevel gear (309) is meshed with the bottom of the first bevel gear (307).

6. A twin-screw extruder for biodegradable tableware according to claim 1, characterized in that, A second motor (5) is fixedly installed on the top of the main body (1) of the equipment. The output shaft of the second motor (5) is fixedly connected to one side of the first bevel gear (307) through a coupling.

7. A twin-screw extruder for biodegradable tableware according to claim 5, characterized in that, The bottom of the second mounting sleeve (302) is fixedly connected to a pusher screw (310).

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