Stirring and pushing double-screw extruder
By designing a retractable discharge port and fixing components, the problem of cleaning the discharge port of a twin-screw extruder was solved, ensuring the cleanliness of the connection between the die and the barrel and improving product quality.
Patent Information
- Application Number
- CN202520090576.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-15
- Publication Date
- 2025-12-16
- Estimated Expiration
- 2035-01-15
AI Technical Summary
Existing twin-screw extruders have difficulty cleaning at the discharge port, and material residue is easily left, affecting the quality of extruded products.
Design a twin-screw extruder with stirring and pushing, featuring a retractable discharge port that is fixed inside the barrel by a fixing component. The sliding and locking blocks work together to achieve sliding and fixing of the slider, facilitating cleaning of the connection between the die and the barrel.
It enables convenient cleaning at the connection between the die and the barrel, prevents material residue, and improves the quality of extruded products.
Smart Images
Figure CN223671783U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of plastic extruders, in particular to a double screw extruder of stirring and pushing. BACKGROUND
[0002] The double screw extruder is developed on the basis of the single screw extruder, has been widely applied to the forming processing of extruded products due to the good feeding performance, mixing plasticizing performance, exhaust performance and extrusion stability, etc. The double screw extruder is composed of a transmission device, a feeding device, a barrel and a screw, etc. The functions of the components are similar to those of the single screw extruder, and the structure is shown in the "schematic diagram of the structure of the double screw extruder". The difference between the double screw extruder and the single screw extruder is that two parallel screws are arranged in the "∞" section barrel. The double screw extruder for profile extrusion is usually tightly meshed and rotates in opposite directions, although a few use the same direction rotating double screw extrusion, which is generally operated at a relatively low screw speed, about 10 r / min. The high-speed meshing same direction rotating double screw extruder is used for compounding, exhaust or as a continuous chemical reactor, and the maximum screw speed range of the extruder is 300-600 r / min. In the use of the existing double screw extruder, the discharge port and other positions are difficult to clean completely, and the material is easy to remain at the connection between the die port and the barrel, which affects the quality of the extruded products. SUMMARY
[0003] The utility model discloses a double screw extruder of stirring and pushing, which is provided with an extensible discharge port fixed in the barrel by a fixing assembly, facilitates the cleaning of the connection between the die port and the barrel, and solves the problem of difficult cleaning and easy material remaining at the connection between the die port and the barrel.
[0004] The utility model is implemented by the following technical solutions:
[0005] The utility model discloses a double screw extruder of stirring and pushing, which comprises a barrel and a sliding block, a "T"-shaped slot is formed in the barrel, a protruding block is arranged at the back of the sliding block, the protruding block is installed in the "T"-shaped slot, a through hole is formed in the barrel, the through hole is communicated with the "T"-shaped slot, a cavity is formed in the barrel, and the cavity is communicated with the "T"-shaped slot and the through hole respectively.
[0006] The fixing assembly comprises a clamping block, the back of the clamping block is fixedly connected with one end of a reset spring, the other end of the reset spring is fixedly connected with the bottom surface of the inner wall of the cavity, and a limiting rod is installed in the through hole.
[0007] Further, the barrel is installed at the top of the machine body, and a die port is installed on the sliding block.
[0008] Further, a blind hole is formed in the protruding block.
[0009] Further, the limiting rod is embedded in the limiting spring, and a check ring is installed on the limiting rod and abuts against one end of the limiting spring.
[0010] Further, the clamping block is a U-shaped block, and two ends of the clamping block extend into the T-shaped groove and the through hole respectively.
[0011] The utility model has the following beneficial effects:
[0012] The utility model discloses two sliding blocks are arranged in the machine body, and the two sliding blocks are used to form the discharge port, and the two sliding blocks can slide in the barrel, when the sliding block contacts with the bottom surface of the T-shaped groove, the sliding block abuts against the clamping block, the clamping block is pushed, and the restriction on the through hole is removed, when the clamping block is completely put into the cavity, the limiting rod in the through hole extends into the blind hole under the action of the limiting spring, the two sliding blocks are fixed in the barrel, the sliding block is convenient to draw out and clean or install the die orifice, and the material is prevented from remaining at the die orifice and the barrel connecting place.
[0013] Of course, implementing any product of the utility model does not necessarily need to achieve all the advantages mentioned above at the same time. BRIEF DESCRIPTION OF DRAWINGS
[0014] Figure 1 It is a structural schematic diagram of an extruder;
[0015] Figure 2 It is a partial sectional structural schematic diagram of an extruder;
[0016] Figure 3 It is a structural schematic diagram of A;
[0017] Figure 4 It is a structural schematic diagram of a sliding block.
[0018] In the drawing: 1, machine body; 2, barrel; 3, sliding block; 4, fixed assembly; 5, die orifice; 201, T-shaped groove; 202, cavity; 203, through hole; 301, protruding block; 302, blind hole; 401, clamping block; 402, reset spring; 403, limiting spring; 404, limiting rod; 405, check ring. DETAILED DESCRIPTION
[0019] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.
[0020] Clearly and completely describe the technical scheme in the embodiments of the utility model with reference to the drawings in the embodiments of the utility model, obviously, the described embodiment is only a part of the embodiment of the utility model, and is not all the embodiment. Based on the embodiment in the utility model, all other embodiments obtained by the ordinary skill in the art without making creative labor belong to the range of protection of the utility model.
[0021] Please refer to Figures 1-4 The utility model provides a technical scheme: a kind of stirring and pushing double screw extruder, including barrel 2 and sliding block 3, barrel 2 is installed at the top of body 1, die 5 is installed on sliding block 3, "T" shaped slot 201 is opened in barrel 2, protruding block 301 is arranged on the back of sliding block 3, protruding block 301 is installed in "T" shaped slot 201, through hole 203 is opened in barrel 2, through hole 203 is communicated with "T" shaped slot 201, cavity 202 is opened in barrel 2, cavity 202 is communicated with "T" shaped slot 201 and through hole 203 respectively.
[0022] In the embodiment, discharge port is composed of two sliding blocks 3, both of the two sliding blocks 3 can slide in barrel 2, so that die 5 can be quickly taken out from barrel 2, and when cleaning work is carried out, the two sliding blocks 3 are pulled out, the sliding block 3 replaces the connecting part of barrel 2 and die 5, the connecting part of die 5 and barrel 2 is conveniently cleaned, so that the connecting part of die 5 and barrel 2 which is difficult to clean can be conveniently cleaned.
[0023] Fixed assembly 4 includes clamping block 401, the back of clamping block 401 is fixedly connected with one end of reset spring 402, the other end of reset spring 402 is fixedly connected with the bottom surface of the inner wall of cavity 202, limit rod 404 is installed in through hole 203, limit rod 404 is embedded in limit spring 403, stop ring 405 is installed on limit rod 404, stop ring 405 abuts against one end of limit spring 403, clamping block 401 is "U" shaped block, both ends of clamping block 401 respectively extend into "T" shaped slot 201 and through hole 203, blind hole 302 is opened in protruding block 301.
[0024] In the embodiment, blind hole 302 is opened in sliding block 3, when sliding block 3 enters barrel 2 and contacts the bottom of barrel 2, sliding block 3 abuts against clamping block 401, clamping block 401 is pushed, clamping block 401 is received in cavity 202, one end of clamping block 401 is away from through hole 203, limit rod 404 installed in through hole 203 extends into blind hole 302 under the action of limit spring 403, clamping block 401 is fixed in barrel 2, sliding block 3 is conveniently pulled out for cleaning or die 5 is installed.
[0025] The preferred embodiments disclosed above are only used to help describe the utility model. The preferred embodiments do not describe all the details and do not limit the utility model to the specific embodiments. Obviously, according to the content of the specification, many modifications and changes can be made. The specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that the persons skilled in the art can well understand and utilize the utility model. The utility model is limited by the claims and the entire scope and equivalents thereof.
Claims
1. A twin-screw extruder with a push-mixing, characterized by: The utility model relates to a material cylinder and slider fixing device, including material cylinder (2) and slider (3), the "T" shape groove (201) is seted up on material cylinder (2), slider (3) back is provided with protruding block (301), protruding block (301) is installed in "T" shape groove (201), the through -hole (203) is seted up on material cylinder (2), the through -hole (203) is communicated with "T" shape groove (201), the cavity (202) is seted up in material cylinder (2), the cavity (202) is communicated with "T" shape groove (201) and through -hole (203) respectively, Still include fixed assembly (4), fixed assembly (4) include clamping block (401), clamping block (401) back with reset spring (402) one end fixed connection, reset spring (402) other end with the bottom surface of cavity (202) inner wall fixed connection, the through -hole (203) install limit rod (404) in.
2. A twin-screw extruder with mixing and pushing according to claim 1, characterized in that Material cylinder (2) is installed at the top of fuselage (1), and die mouth (5) is installed on slider (3).
3. A twin-screw extruder with mixing and pushing according to claim 1, characterized in that Blind hole (302) is seted up on protruding block (301).
4. A twin-screw extruder with mixing and pushing according to claim 1, characterized in that Limit rod (404) is embedded in limit spring (403), and limit rod (404) is installed with check ring (405), and check ring (405) is in contact with limit spring (403) one end.
5. A twin-screw extruder with mixing and pushing according to claim 1, characterized in that, Clamping block (401) is "U" shaped block, and clamping block (401) both ends respectively extend into "T" shape groove (201) with through -hole (203).