Novel double-screw extruder

Abstract

The utility model relates to the related technical field of extruders, and discloses a novel double-screw extruder which comprises a double-threaded-rod extruder main body, the top of the double-threaded-rod extruder main body is fixedly connected with a feeding port, the outer side of the double-threaded-rod extruder main body is fixedly connected with a communicating pipe, and the communicating pipe is fixedly connected with a discharging port. A mounting plate is fixedly connected to the outer side of the double-threaded-rod extruder body, an exhaust fan is fixedly connected to the top of the mounting plate, a conveying pipe is fixedly connected to the output end of the exhaust fan, a shell is fixedly connected to the end, away from the exhaust fan, of the conveying pipe, and a baffle is slidably connected to the interior of the shell. According to the double-threaded-rod extruder disclosed by the utility model, by arranging the double-threaded-rod extruder main body, the feeding opening, the communicating pipe, the mounting plate, the exhaust fan, the conveying pipe, the shell, the baffle and the like, waste gas in the processing process can be treated, and an activated carbon filter element can be conveniently and quickly replaced; the environment pollution caused by exhaust gas emission due to the reduction of the exhaust gas treatment efficiency caused by the poor filtering effect of the activated carbon filter element after long-time use is prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of extruders, in particular to a new type of twin-screw extruder. Background Art

[0002] The new type of twin-screw extruder is an efficient plastic processing equipment, with large production capacity and high production speed, which can quickly complete the production of a large number of plastic products, improving production efficiency. It rotates two mutually meshing screws in the barrel to realize the heating, melting, mixing and extrusion of plastic materials.

[0003] In the prior art, the twin-screw bar extruder mainly relies on the interaction of two screws. The positive screw is responsible for transporting plastic particles from the feed inlet to the screw junction. During this process, the plastic is gradually heated, melted and fully mixed with the heat in the environment. The reverse screw further heats and melts the partially melted plastic and pushes it to the mold through the design of the shielding rotor to form the required plastic products. When the twin-screw bar melts and mixes plastic particles, toxic waste gas will be generated, and these waste gases cannot be collected and treated, resulting in environmental pollution after being discharged.

[0004] In view of the above problems, a new type of twin-screw extruder is proposed to solve the above problems. Content of the Utility Model

[0005] In order to make up for the above deficiencies, the utility model provides a new type of twin-screw extruder, aiming to improve the problem that the toxic waste gas generated when the twin-screw bar melts and mixes plastic particles in the prior art cannot be collected and treated, resulting in environmental pollution after being discharged.

[0006] In order to achieve the above purpose, the utility model adopts the following technical scheme: A new type of twin-screw extruder, including the main body of the twin-screw bar extruder, a feeding port is fixedly connected to the top of the main body of the twin-screw bar extruder, a communicating pipe is fixedly connected to the outside of the main body of the twin-screw bar extruder, a mounting plate is fixedly connected to the outside of the main body of the twin-screw bar extruder, an exhaust fan is fixedly connected to the top of the mounting plate, a conveying pipe is fixedly connected to the output end of the exhaust fan, one end of the conveying pipe away from the exhaust fan is fixedly connected to a housing, a baffle is slidably connected to the inside of the housing, a telescopic pipe is fixedly connected to the outside of the baffle, an activated carbon filter element is slidably connected to the inside of the housing, two outer shells are fixedly connected to the outside of the housing, a sliding rod is fixedly connected to the inside of the outer shell, a spring is sleeved on the outside of the sliding rod, a plug is slidably connected to the outside of the sliding rod, a rotating frame is fixedly connected to the outside of the plug, a rotating block is rotatably connected to the inside of the rotating frame, a button is rotatably connected to the top of the rotating block, and an auxiliary feeding assembly is arranged on the top of the main body of the twin-screw bar extruder, and the auxiliary feeding assembly is used to prevent the feeding port from being blocked.

[0007] As a further description of the above technical solution:

[0008] The auxiliary feeding assembly includes a support frame, the bottom of the support frame is fixedly connected to the top of the double-screw extruder main body, a motor is fixedly connected to the outside of the top of the support frame, a turntable is fixedly connected to the output end of the motor, an eccentric shaft is fixedly connected to the outside of the turntable, a connecting block is rotatably connected to the outside of the eccentric shaft, a connecting rod is rotatably connected to the inside of the connecting block, and an impact block is fixedly connected to the end of the connecting rod away from the connecting block.

[0009] As a further description of the above technical solution:

[0010] One end of the connecting pipe away from the double-screw extruder main body is fixedly connected to the input end of the exhaust fan, and the bottom of the exhaust fan is fixedly connected to the top of the mounting plate.

[0011] As a further description of the above technical solution:

[0012] One end of the spring is fixedly connected to the inner wall of the housing, and the other end of the spring is fixedly connected to the outside of the plug block.

[0013] As a further description of the above technical solution:

[0014] The outside of the plug block is slidably connected to the inside of the housing, and the plug block penetrates through the housing and is inserted into the inside of the baffle.

[0015] As a further description of the above technical solution:

[0016] The outside of the button is slidably connected to the inside of the housing.

[0017] As a further description of the above technical solution:

[0018] A fixed buckle is fixedly connected to the outside of the top of the support frame, and the outside of the connecting rod is slidably connected to the inside of the fixed buckle.

[0019] As a further description of the above technical solution:

[0020] The outside of the turntable is rotatably connected to the outside of the support frame.

[0021] The utility model has the following beneficial effects:

[0022] 1. In the present utility model, by using an exhaust fan, the exhaust fan extracts the waste gas generated inside the double-screw extruder main body through a connecting pipe, and then conveys the waste gas to the activated carbon filter element inside the housing through a conveying pipe for filtration and purification. Press the button, the button drives the rotating block, the rotating block drives the rotating frame, the rotating frame drives the insertion block to slide outside the sliding rod to compress the spring, the spring generates elastic force, and at the same time the insertion block slides out from inside the baffle. Hold the telescopic pipe and remove the baffle to be able to take out the activated carbon filter element, which realizes the ability to handle the waste gas in the processing process, conveniently and quickly replace the activated carbon filter element, prevent the filtration effect from deteriorating due to long-term use of the activated carbon filter element, resulting in a reduction in the efficiency of waste gas treatment, and prevent environmental pollution after the waste gas is discharged.

[0023] 2. In the present utility model, start the motor. The motor drives the turntable to rotate, the turntable drives the eccentric shaft, the eccentric shaft drives the connecting block to rotate, the connecting block drives the connecting rod to move linearly, and the connecting rod drives the impact block to impact the feeding port, which realizes the ability to impact the feeding port during feeding to make the feeding port vibrate, so that the materials inside the feeding port can quickly fall into the double-screw extruder main body and prevent the feeding port from being blocked. Description of the Drawings

[0024] Figure 1 Is a three-dimensional view of a new type of double-screw extruder proposed by the present utility model;

[0025] Figure 2 Is a structural schematic diagram of the conveying pipe of a new type of double-screw extruder proposed by the present utility model;

[0026] Figure 3 Is Figure 2 The enlarged view at A in

[0027] Figure 4 Is Figure 2 The enlarged view at B in

[0028] Legend Explanation:

[0029] 1. Double-screw extruder main body; 2. Feeding port; 3. Fixed buckle; 4. Connecting pipe; 5. Exhaust fan; 6. Conveying pipe; 7. Housing; 8. Baffle; 9. Telescopic pipe; 10. Activated carbon filter element; 11. Installation plate; 12. Outer shell; 13. Sliding rod; 14. Spring; 15. Insertion block; 16. Rotating frame; 17. Rotating block; 18. Button; 19. Support frame; 20. Motor; 21. Turntable; 22. Eccentric shaft; 23. Connecting block; 24. Connecting rod; 25. Impact block. Detailed Embodiments

[0030] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0031] Referring to Figures 1 - 3 , an embodiment provided by the present invention: a novel twin-screw extruder, including a twin-screw extruder main body 1, a feeding port 2 is fixedly connected to the top of the twin-screw extruder main body 1, a connecting pipe 4 is fixedly connected to the outside of the twin-screw extruder main body 1, a mounting plate 11 is fixedly connected to the outside of the twin-screw extruder main body 1, a suction fan 5 is fixedly connected to the top of the mounting plate 11, a conveying pipe 6 is fixedly connected to the output end of the suction fan 5, one end of the conveying pipe 6 away from the suction fan 5 is fixedly connected to a housing 7, a baffle 8 is slidably connected inside the housing 7, a telescopic pipe 9 is fixedly connected to the outside of the baffle 8, an activated carbon filter element 10 is slidably connected inside the housing 7, two outer shells 12 are fixedly connected to the outside of the housing 7, a slide bar 13 is fixedly connected inside the outer shell 12, a spring 14 is sleeved on the outside of the slide bar 13, a plug 15 is slidably connected to the outside of the slide bar 13, a rotating frame 16 is fixedly connected to the outside of the plug 15, a rotating block 17 is rotatably connected inside the rotating frame 16, a button 18 is rotatably connected to the top of the rotating block 17, and an auxiliary feeding assembly is arranged at the top of the twin-screw extruder main body 1, and the auxiliary feeding assembly is used to prevent the feeding port 2 from being blocked.

[0032] Specifically, the twin-screw extruder main body 1, which is the core part of the extruder, is usually composed of two parallel screws that rotate in a closed cylinder to push and mix plastic materials. The feeding port 2 is located at the top of the twin-screw extruder main body 1 and is used to input plastic particles or powders. The connecting pipe 4 is connected to the twin-screw extruder main body 1 and is used to convey gases or liquids to assist the plastic processing process. The mounting plate 11 is fixed to the side of the twin-screw extruder main body 1 and is used to support other components or connect to other devices. The suction fan 5 is installed on the mounting plate 11 and is used to extract the waste gases or fumes generated during the processing to purify the working environment. The conveying pipe 6 leads out from the suction fan 5 and is used to guide the discharged gases or liquids to a designated place. The housing 7 contains a baffle 8 and an activated carbon filter element 10, which are used to filter and purify the gases of the twin-screw extruder main body 1. The outer shell 12 is fixed to the outside of the housing 7 and is used to protect the internal components or provide additional structural support. The slide bar 13 supports the sliding of the plug 15 to prevent the spring 14 from shifting. The plug 15 is used to prevent the baffle 8 from falling off. The rotating frame 16 and the rotating block 17 cooperate with the button 18 to drive the plug 15 to move.

[0033] Referring to Figure 2 andFigure 4 , the auxiliary feeding assembly includes a support frame 19, the bottom of the support frame 19 is fixedly connected to the top of the double-screw extruder main body 1, the outside of the top of the support frame 19 is fixedly connected with a motor 20, the output end of the motor 20 is fixedly connected with a turntable 21, the outside of the turntable 21 is fixedly connected with an eccentric shaft 22, the outside of the eccentric shaft 22 is rotatably connected with a connecting block 23, the inside of the connecting block 23 is rotatably connected with a connecting rod 24, and one end of the connecting rod 24 away from the connecting block 23 is fixedly connected with an impact block 25.

[0034] Specifically, the support frame 19 is used to support and install other components. The output end of the motor 20 is fixed with a turntable 21 to drive the turntable 21 to rotate. The turntable 21 is connected to the motor 20, receives the power of the motor 20, and drives the subsequent mechanical components through its rotation. The eccentric shaft 22 is connected to the turntable 21. Due to its eccentric design, it can generate a reciprocating linear motion when rotating. The connecting block 23 is connected to the eccentric shaft 22, and the inside is rotatably connected with a connecting rod 24. Following the rotational movement of the eccentric shaft 22, one end of the connecting rod 24 is rotatably connected inside the connecting block 23 and is driven by the connecting block 23, and one end is fixed with an impact block 25. The impact block 25 is the end part of the connecting rod 24, and it performs a reciprocating motion under the drive of the connecting rod 24 to impact the feeding port 2, causing the feeding port 2 to vibrate so that the internal material can quickly enter the working area of the double-screw extruder main body 1.

[0035] Refer to Figures 1 - 4 , one end of the connecting pipe 4 away from the double-screw extruder main body 1 is fixedly connected to the input end of the exhaust fan 5, and the bottom of the exhaust fan 5 is fixedly connected to the top of the mounting plate 11. One end of the spring 14 is fixedly connected to the inner wall of the housing 12, and the other end of the spring 14 is fixedly connected to the outside of the plug 15. The outside of the plug 15 is slidably connected inside the housing 12, and the plug 15 passes through the housing 7 and is inserted into the baffle 8. The outside of the button 18 is slidably connected inside the housing 12. The outside of the top of the support frame 19 is fixedly connected with a fixed buckle 3, and the outside of the connecting rod 24 is slidably connected inside the fixed buckle 3. The outside of the turntable 21 is rotatably connected to the outside of the support frame 19.

[0036] Specifically, the connecting pipe 4 is fixed to the input end of the exhaust fan 5 to facilitate the exhaust fan 5 to extract the waste gas inside the double-screw extruder main body 1. The bottom of the exhaust fan 5 is fixed to the top of the mounting plate 11 to enable the exhaust fan 5 to be installed. One end of the spring 14 is fixed to the inner wall of the housing 12, and the other end is fixed to the outside of the plug 15 to enable the spring 14 to provide elastic force and tensile force. The plug 15 slides inside the housing 12 and passes through the housing 7 and is inserted into the baffle 8 to limit the baffle 8 inside the plug 15 to prevent the baffle 8 from falling off. The button 18 slides inside the housing 12 to facilitate pressing the button 18. The fixed buckle 3 is fixed to the outside of the top of the support frame 19, and the fixed buckle 3 supports the connecting rod 24. The outside of the turntable 21 rotates on the outside of the support frame 19 to enable the turntable 21 to rotate stably.

[0037] Working principle: When using a double-screw extruder, materials are added into the interior of the double-screw extruder main body 1 through the feeding port 2. The motor 20 is started, and the motor 20 drives the turntable 21 to rotate. The turntable 21 rotates the eccentric shaft 22, the eccentric shaft 22 drives the connecting block 23, the connecting block 23 drives the connecting rod 24 to make a reciprocating motion, the connecting rod 24 drives the impact block 25, and the impact block 25 impacts the feeding port 2, causing the feeding port 2 to vibrate and enabling the materials inside the feeding port 2 to quickly enter the interior of the double-screw extruder main body 1, preventing the feeding port 2 from being blocked. The waste gas generated during the working process of the double-screw extruder main body 1 is extracted through the connecting pipe 4 by the exhaust fan 5 and then conveyed through the conveying pipe 6 to the activated carbon filter element 10 inside the housing 7 for filtration and purification. When the activated carbon filter element 10 needs to be replaced, the button 18 is pressed. The button 18 drives the rotating block 17, the rotating block 17 drives the rotating frame 16, and the rotating frame 16 drives the plug 15 to slide on the outer periphery of the sliding rod 13 to compress the spring 14. The spring 14 generates an elastic force, and when the plug 15 is driven, it slides out from inside the baffle 8. At this time, hold the telescopic pipe 9 and remove the baffle 8, replace the activated carbon filter element 10. After the replacement is completed, press the button 18 in the same way, install the baffle 8, release the button 18, and the elastic force generated by the spring 14 pushes the plug 15 to insert into the baffle 8 to prevent the baffle 8 from falling off.

[0038] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A novel twin-screw extruder, comprising a twin-screw extruder body (1), characterized in that: The top of the double-threaded rod extruder body (1) is fixedly connected with a feeding port (2), the outer side of the double-threaded rod extruder body (1) is fixedly connected with a connecting pipe (4), the outer side of the double-threaded rod extruder body (1) is fixedly connected with a mounting plate (11), the top of the mounting plate (11) is fixedly connected with an exhaust fan (5), the output end of the exhaust fan (5) is fixedly connected with a conveying pipe (6), the end of the conveying pipe (6) away from the exhaust fan (5) is fixedly connected with a shell (7), the inside of the shell (7) is slidably connected with a baffle (8), the outside of the baffle (8) is fixedly connected with a telescopic pipe (9), the inside of the shell (7) is slidably connected with a An activated carbon filter element (10), wherein two outer shells (12) are fixedly connected to the outside of the shell (7), a slide rod (13) is fixedly connected inside the outer shell (12), a spring (14) is sleeved on the outside of the slide rod (13), an insert block (15) is slidably connected to the outside of the slide rod (13), a rotating frame (16) is fixedly connected to the outside of the insert block (15), a rotating block (17) is rotatably connected inside the rotating frame (16), a button (18) is rotatably connected to the top of the rotating block (17), and an auxiliary feeding component is arranged on the top of the double-threaded rod extruder body (1), and the auxiliary feeding component is used to prevent the feeding port (2) from being blocked.

2. A novel twin-screw extruder according to claim 1, characterized in that: The auxiliary feeding component comprises a support frame (19), the bottom of the support frame (19) is fixedly connected to the top of the double-threaded rod extruder body (1), the outer side of the top of the support frame (19) is fixedly connected to a motor (20), the output end of the motor (20) is fixedly connected to a turntable (21), the outer side of the turntable (21) is fixedly connected to an eccentric shaft (22), the outer side of the eccentric shaft (22) is rotatably connected to a connecting block (23), the inside of the connecting block (23) is rotatably connected to a connecting rod (24), and the end of the connecting rod (24) away from the connecting block (23) is fixedly connected to an impact block (25).

3. A novel twin-screw extruder according to claim 1, characterized in that: One end of the connecting pipe (4) away from the double-threaded rod extruder body (1) is fixedly connected to the input end of the exhaust fan (5), and the bottom of the exhaust fan (5) is fixedly connected to the top of the mounting plate (11).

4. A novel twin-screw extruder according to claim 1, characterized in that: One end of the spring (14) is fixedly connected to the inner wall of the outer shell (12), and the other end of the spring (14) is fixedly connected to the outside of the plug (15).

5. A novel twin-screw extruder according to claim 1, characterized in that: The outer side of the plug block (15) is slidably connected to the inside of the outer shell (12); the plug block (15) passes through the shell (7) and is plugged into the inside of the baffle (8).

6. A novel twin-screw extruder according to claim 1, characterized in that: The outer side of the button (18) is slidably connected to the inside of the housing (12).

7. A novel twin-screw extruder according to claim 2, characterized in that: A fixing buckle (3) is fixedly connected to the outer side of the top of the support frame (19), and the outer side of the connecting rod (24) is slidably connected to the inside of the fixing buckle (3).

8. A novel twin-screw extruder according to claim 2, characterized in that: The outer side of the rotating disk (21) is rotatably connected to the outer side of the supporting frame (19).

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