Double-screw extruder for manufacturing polyvinyl chloride particles

Abstract

The utility model discloses a twin-screw extruder for manufacturing polyvinyl chloride particles, which relates to the technical field of extruders and comprises a feed hopper, a collecting barrel is slidably connected to the outside of the feed hopper, handles are fixedly mounted at two ends of the collecting barrel respectively, and the collecting barrel is connected with the feed hopper. Each connecting mechanism comprises a fixing block, a connecting groove, a fixing screw rod, a connecting block and a threaded hole, the collecting barrel is arranged, the connecting block outside the collecting barrel is inserted into the connecting groove, at the moment, the fixing screw rod is rotated to be in threaded connection with the interior of the threaded hole, and the connecting block is fixed into the connecting groove; when materials flow out of the feeding hopper due to manual errors, the materials are collected by the collecting barrel, and when work is finished or more materials exist in the collecting barrel, the materials are accumulated in the collecting barrel, so that workers can conveniently clean the materials, the situation that the materials are scattered everywhere on a production site is avoided, and the workload and difficulty of cleaning are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of extruders, in particular to a twin-screw extruder for producing polyvinyl chloride particles. Background Art

[0002] Existing polyvinyl chloride particles, abbreviated as PVC particles, are a physical form of polyvinyl chloride (PVC) resin, usually produced through the polymerization reaction of vinyl chloride monomer. In the manufacturing process of PVC particles, the twin-screw extruder is one of the key equipment. The staff feeds the raw materials into the twin-screw extruder through the feed hopper. Inside the extruder, the raw materials are subjected to strong shearing and mixing, and are heated to an appropriate temperature to promote the polymerization reaction. As the screw rotates and advances, the raw materials are gradually converted into a molten PVC mixture and eventually extruded into slender particles or strips. The twin-screw extruder consists of several parts, including a transmission device, a feeding device, a barrel and screws. There are two screws, and the two parallel screws are placed in a barrel with an "∞"-shaped cross-section.

[0003] When putting raw materials into the feed hopper, if the amount of material put in is too much and exceeds the carrying capacity of the feed hopper, the material will overflow and fall on the equipment or the ground. The staff needs to clean it up. At the same time, some raw materials are small in size, which increases the workload and difficulty of cleaning. Utility Model Content

[0004] (1) Technical problems solved

[0005] In response to the shortcomings of the existing technology, the utility model provides a twin-screw extruder for the production of polyvinyl chloride particles, which solves the technical problems that if the amount of material fed is too much and exceeds the carrying capacity of the feed hopper, the material overflows and falls on the equipment or the ground, which requires staff to clean up. At the same time, some raw materials are small in size, which increases the cleaning workload and difficulty.

[0006] (2) Technical solution

[0007] In order to achieve the above objectives, the present invention is implemented through the following technical solutions:

[0008] A twin-screw extruder for producing polyvinyl chloride particles includes a feed hopper, the outside of the feed hopper is slidably connected to a collecting cylinder, both ends of the collecting cylinder are fixedly installed with handles, both ends of the feed hopper are provided with connecting mechanisms, each connecting mechanism includes a fixed block, a connecting groove, a fixed screw, a connecting block and a threaded hole, the fixed block is fixedly installed on the outside of the feed hopper, the connecting groove is opened on the outside of the fixed block, the fixed screw is movably connected to the inside of the connecting groove, the connecting block is slidably connected to the inside of the connecting groove, the threaded hole is provided on the outside of the connecting block, and the fixed screw is threadedly connected to the inside of the threaded hole.

[0009] A through hole is provided on the outside of each fixing block, and a fixing screw is movably connected to the inside of the connecting groove through the through hole. A mounting groove is provided on the outside of each connecting block, and a mounting block is clamped inside each mounting groove. A threaded hole is provided on the outside of the mounting block, and a push plate is slidably connected to the inside of each mounting groove, and the push plate fits the surface of the mounting block.

[0010] Preferably, a built-in groove is provided inside each installation groove, a built-in plate is slidably connected to the inside of each built-in groove, and the built-in plate is fixedly installed on the outside of the push plate.

[0011] Preferably, an opening is formed on the outside of each connecting block, and the fixing screw is movably connected to the inside of the opening.

[0012] (3) Beneficial effects

[0013] 1. By setting up a collecting barrel and cooperating with a fixing screw, insert the connecting block outside the collecting barrel into the inside of the connecting groove. At this time, rotate the fixing screw so that the fixing screw is threadedly connected to the inside of the threaded hole to fix the connecting block inside the connecting groove. When the material flows out of the feed hopper due to human error, the material is collected by the collecting barrel. When the work is completed or there is a lot of material in the collecting barrel, it is convenient for the staff to clean up the material because the material is accumulated in the collecting barrel, avoiding the situation where the material is scattered all over the production site, thereby reducing the workload and difficulty of cleaning.

[0014] 2. By setting the mounting block and matching the threaded hole, when the threaded hole is damaged, the push plate is pushed to move the mounting block out of the mounting slot. At this time, the user can completely pull the mounting block out of the mounting slot. At this time, the mounting block is removed. When installing a new threaded hole, the new mounting block is inserted into the mounting slot, which facilitates the quick replacement of the threaded hole and improves work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention and to implement it according to the contents of the specification, the following is a detailed description of the preferred embodiments of the present invention in conjunction with the accompanying drawings.

[0016] Figure 1 It is a structural diagram of the utility model;

[0017] Figure 2 For this utility model Figure 1 Structural diagram of the middle feed hopper;

[0018] Figure 3 For this utility model Figure 1 Structural diagram of the middle collecting tube;

[0019] Figure 4 For this utility model Figure 3The structural diagram of the connection block;

[0020] Figure 5 For this utility model Figure 4 Structural diagram of the middle push plate.

[0021] Legend: 1. Feed hopper; 2. Collecting cylinder; 3. Fixing block; 4. Connecting groove; 5. Fixing screw; 6. Connecting block; 7. Threaded hole; 8. Handle; 9. Mounting groove; 10. Mounting block; 11. Push plate; 12. Built-in groove; 13. Built-in plate; 14. Opening; 15. Through hole. DETAILED DESCRIPTION

[0022] The embodiment of the present application provides a twin-screw extruder for the production of polyvinyl chloride particles, which effectively solves the technical problem that if the amount of material added is too much and exceeds the carrying capacity of the feed hopper 1, the material overflows and falls on the equipment or the ground, and the staff needs to clean it up. At the same time, some raw materials are small in size, which increases the cleaning workload and difficulty. Example

[0023] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 The technical solution in the embodiment of the present application effectively solves the technical problem that if the amount of material added exceeds the carrying capacity of the feed hopper 1 and causes material overflow, the material falls on the equipment or the ground, and the staff needs to clean it up. At the same time, some raw materials are small in size, which increases the cleaning workload and cleaning difficulty. The overall idea is as follows:

[0024] In view of the problems existing in the prior art, the utility model provides a twin-screw extruder for the production of polyvinyl chloride particles, which includes a feed hopper 1, the outside of the feed hopper 1 is slidably connected to a collecting cylinder 2, the collecting cylinder 2 can be made of a transparent material, which is convenient for the staff to observe the situation in the collecting cylinder 2, and both ends of the collecting cylinder 2 are fixedly installed with handles 8, the handles 8 are concave, and both ends of the feed hopper 1 are provided with connecting mechanisms, each connecting mechanism includes a fixed block 3, a connecting groove 4, a fixed screw 5, a connecting block 6 and a threaded hole 7, the fixed block 3 is fixedly installed on the outside of the feed hopper 1, the connecting groove 4 is opened on the outside of the fixed block 3, and the fixed screw 5 is movably connected to the inside of the connecting groove 4. The connecting block 6 is slidably connected to the inside of the connecting groove 4, the threaded hole 7 is set on the outside of the connecting block 6, and the fixed screw 5 is threadedly connected to the inside of the threaded hole 7. By setting the collecting cylinder 2 and cooperating with the fixed screw 5, the connecting block 6 on the outside of the collecting cylinder 2 is inserted into the inside of the connecting groove 4. At this time, the fixed screw 5 is rotated so that the fixed screw 5 is threadedly connected to the inside of the threaded hole 7 to fix the connecting block 6 to the inside of the connecting groove 4. When the material flows out of the feed hopper 1 due to human error, the material is collected by the collecting cylinder 2. When the work is completed or there is a lot of material in the collecting cylinder 2, it is convenient for the staff to clean up the material because the material is accumulated in the collecting cylinder 2, which avoids the situation where the material is scattered everywhere in the production site, thereby reducing the workload and difficulty of cleaning.

[0025] A through hole 15 is formed on the outside of each fixing block 3 , and the fixing screw 5 is movably connected to the inside of the connecting groove 4 through the through hole 15 , so that the fixing screw 5 enters the inside of the connecting groove 4 .

[0026] The outside of each connecting block 6 is provided with a mounting groove 9, and the inside of each mounting groove 9 is clamped with a mounting block 10. The threaded hole 7 is provided on the outside of the mounting block 10 to facilitate the replacement of the threaded hole 7. The inside of each mounting groove 9 is slidably connected with a push plate 11, and the push plate 11 fits the surface of the mounting block 10 for easy pushing and installation. A built-in groove 12 is provided inside each mounting groove 9, and the inside of each built-in groove 12 is slidably connected with a built-in plate 13. The built-in plate 13 is fixedly mounted on the outside of the push plate 11 to prevent the push plate 11 from being disconnected from the mounting groove 9. By setting the mounting block 10 and cooperating with the threaded hole 7, when the threaded hole 7 is damaged, the push plate 11 is pushed to push the mounting block 10 out of the inside of the mounting groove 9. At this time, the user can completely pull the mounting block 10 out of the inside of the mounting groove 9. At this time, the mounting block 10 is disassembled, and when installing a new threaded hole 7, the new mounting block 10 is inserted into the inside of the mounting groove 9, which is convenient for quick replacement of the threaded hole 7 and improves work efficiency.

[0027] An opening 14 is formed on the outside of each connecting block 6 , and the fixing screw 5 is movably connected to the inside of the opening 14 , so that the fixing screw 5 enters the internal structure of the installation groove 9 .

[0028] Working principle:

[0029] In the first step, insert the mounting block 10 into the mounting groove 9. At this time, slide the collecting cylinder 2 to the outside of the feed hopper 1. At this time, insert the connecting block 6 into the connecting groove 4. At this time, insert the fixing screw 5 into the connecting groove 4 through the through hole 15. At this time, rotate the fixing screw 5 to thread it into the threaded hole 7 to fix the connecting block 6 inside the connecting groove 4.

[0030] In the second step, when the material splashes out of the stirring mechanism of the feed hopper 1 or flows out of the feed hopper 1 due to human error, the material is collected by the collecting barrel 2. When the work is almost completed, the material in the collecting barrel 2 is taken out and the material re-enters the interior of the feed hopper 1. When the work is completed, the fixing screw 5 is rotated to release the connection between the fixing screw 5 and the threaded hole 7. At this time, hold the handle 8 to drive the collection barrel 2 to release the connection with the feed hopper 1. At this time, the collection barrel 2 can be disassembled and cleaned.

[0031] Finally, it should be noted that the above embodiments are merely examples for the purpose of illustrating the present invention and are not intended to limit the embodiments. Those skilled in the art will readily appreciate that other variations or modifications based on the above description are possible. It is not necessary and impossible to provide an exhaustive list of all possible embodiments. However, any obvious variations or modifications arising therefrom remain within the scope of protection of the present invention.

Claims

1. A twin-screw extruder for producing polyvinyl chloride particles, comprising a feed hopper (1), characterized in that: The outside of the feed hopper (1) is slidably connected to a collecting cylinder (2), both ends of the collecting cylinder (2) are fixedly mounted with handles (8), and both ends of the feed hopper (1) are provided with connecting mechanisms; Each connecting mechanism comprises a fixing block (3), a connecting groove (4), a fixing screw (5), a connecting block (6) and a threaded hole (7); The fixing block (3) is fixedly mounted on the outside of the feed hopper (1), the connecting groove (4) is opened on the outside of the fixing block (3), the fixing screw (5) is movably connected to the inside of the connecting groove (4), the connecting block (6) is slidably connected to the inside of the connecting groove (4), the threaded hole (7) is provided on the outside of the connecting block (6), and the fixing screw (5) is threadedly connected to the inside of the threaded hole (7).

2. A twin-screw extruder for producing polyvinyl chloride particles as claimed in claim 1, characterized in that: Each of the fixing blocks (3) is provided with a through hole (15) on its exterior; The fixing screw (5) is movably connected to the interior of the connecting groove (4) through the through hole (15).

3. The twin-screw extruder for producing polyvinyl chloride particles according to claim 1, wherein: Each of the connecting blocks (6) is provided with a mounting groove (9) on the outside, and a mounting block (10) is clamped inside each mounting groove (9); The threaded hole (7) is formed outside the mounting block (10).

4. A twin-screw extruder for producing polyvinyl chloride particles as claimed in claim 3, characterized in that: Each of the mounting slots (9) is slidably connected to a push plate (11); The push plate (11) is fitted with the surface of the mounting block (10).

5. A twin-screw extruder for producing polyvinyl chloride particles as claimed in claim 3, characterized in that: Each of the mounting slots (9) is provided with a built-in slot (12), and each built-in slot (12) is slidably connected to a built-in plate (13); The built-in plate (13) is fixedly mounted on the outside of the push plate (11).

6. A twin-screw extruder for producing polyvinyl chloride particles as claimed in claim 1, characterized in that: Each of the connecting blocks (6) is provided with an opening (14) on the outside; The fixing screw (5) is movably connected inside the opening (14).

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