Anti-blocking conical twin screw

Abstract

The utility model discloses a kind of anti-stuffing cone double screws, it is related to extruder field, it includes two rod bodies and cylinder, bearing is respectively sleeved on the rod body, fixedly connected mounting plate is equipped on the cylinder, nut sleeve is equipped on the mounting plate, adjusting screw is equipped in the nut sleeve with thread cooperation, the end of the adjusting screw is fixedly connected with the bearing circumference surface.The utility model has the advantages of convenient dismounting, good practicality.

Description

Technical Field

[0001] This utility model relates to the field of extruders, specifically to an anti-clogging cone twin-screw extruder. Background Technology

[0002] In existing technologies, rods are typically cleared by adjusting the spacing between them when material blockage occurs. For example, CN 215921223 U, published on March 1, 2022, discloses a conical twin-screw extruder for a plastic granulator, which includes a spacing adjustment mechanism connecting the two screws. However, this structure has a drawback: when one screw is damaged and needs repair, the other working screw also needs to be disassembled, which is very inconvenient. Utility Model Content

[0003] To overcome the shortcomings of the prior art, this utility model provides a non-clogging cone twin screw that is easy to assemble and disassemble and has good practicality.

[0004] The technical solution adopted by this utility model is as follows: a double screw for preventing material blockage, which includes two rods and a cylinder. Each rod is fitted with a bearing. The cylinder is provided with a fixedly connected mounting plate. The mounting plate is provided with a nut sleeve. The nut sleeve is provided with a threaded adjusting screw. The end of the adjusting screw is fixedly connected to the circumference of the bearing. The end face of the adjusting screw is fixed to the circumferential surface of the bearing by welding.

[0005] The adjusting screws on each rod are located on both sides of the cylinder.

[0006] The rod body is provided with a feeding section, a melting section, a mixing section, a conveying section, a barrier section and an extrusion section in sequence along the axial direction; the melting section includes a melting rod body and a second helical blade fixedly installed on the outer circumference of the melting rod body, and the second helical blade is provided with a plurality of through holes arranged in the helical direction; the extrusion section includes an extrusion rod body and a protrusion provided on the outer circumference of the extrusion rod body, and the protrusion forms a helical shape on the surface of the extrusion rod body.

[0007] The mixing section includes a mixing rod, several vertical edges distributed circumferentially, and several cylinders set on the vertical edges.

[0008] The transmission section includes a transmission rod and a third helical blade fixedly installed on the outer circumference of the transmission rod.

[0009] The barrier section includes a barrier rod and a fourth rib that is fixedly installed on the outer circumference of the barrier rod and is in a spline shape.

[0010] The feeding section includes a feeding rod and a first helical blade fixedly installed on the outer circumference of the feeding rod. The pitch of the first helical blade is greater than the pitch of the second helical blade. The beneficial effects of this utility model are: in this technical solution, the distance between the two rods can be adjusted by simply turning the adjusting screw, thereby preventing material blockage. In addition, each rod can be adjusted independently without affecting the other. When disassembling and replacing, only the damaged rod needs to be replaced. It has the advantages of convenient disassembly and assembly and good practicality. Attached Figure Description Figure 1 This is a schematic diagram of the anti-clogging cone twin-screw structure of an embodiment of this utility model.

[0011] Figure 2 This is a schematic diagram of the rod structure. Detailed Implementation

[0012] The embodiments of this utility model will be further described below with reference to the accompanying drawings: As shown in the figure, an anti-clogging cone twin-screw extruder includes two rods 1 and a cylinder 2. Each rod 1 is fitted with a bearing 3. The cylinder 2 is fitted with a fixed mounting plate 31, and the mounting plate 31 is fitted with a nut sleeve 32. The nut sleeve 32 contains a threaded adjusting screw 33, the end of which is fixedly connected to the circumference of the bearing 3. The adjusting screw 33 on each rod 1 is located on both sides of the cylinder 2. In this technical solution, the distance between the two rods can be adjusted by simply turning the adjusting screw, thereby preventing material blockage. In addition, each rod can be adjusted independently without affecting the other. When disassembling and replacing, only the damaged rod needs to be replaced. It has the advantages of convenient disassembly and assembly and good practicality. The end face of the adjusting screw 33 is fixed to the circumference of the bearing 3 by welding, which has the advantage of being firmly installed.

[0013] The rod body 1 is provided with a feeding section, a melting section, a mixing section, a conveying section, a barrier section, and an extrusion section arranged sequentially along the axial direction. The melting section includes a melting rod body 51 and a second spiral blade 52 fixedly installed on the outer circumference of the melting rod body 51. The second spiral blade 52 is provided with a plurality of through holes 53 arranged in the spiral direction. The extrusion section includes an extrusion rod body 91 and a protrusion 92 arranged on the outer circumference of the extrusion rod body 91. The protrusion 92 forms a spiral shape on the surface of the extrusion rod body 91. By setting the protrusion in the extrusion section and the protrusion forming a spiral shape on the surface of the extrusion rod body, the material leaving the barrier section is more evenly distributed, which has the advantages of convenient material metering, accurate injection metering, and good injection effect.

[0014] The mixing section includes a mixing rod 61, several vertical ribs 62 distributed circumferentially, and several cylinders 63 set on the vertical ribs 62. It can effectively stir the molten material, and through the friction between the cylinders on the vertical ribs and the molten material, the molten material is mixed more evenly, no bubbles are generated, and the transfer of the molten material is accelerated.

[0015] The transmission section includes a transmission rod 71 and a third helical blade 72 fixedly installed on the outer circumference of the transmission rod, which can stably transmit materials.

[0016] The barrier section includes a barrier rod 81 and a fourth prism 82 fixedly installed on the outer circumference of the barrier rod in a spline shape. This forces the material to enter the gap between the fourth prisms when passing through the barrier section, thereby disrupting the path of the molten material, preventing air bubbles from being discharged along the extrusion section, and improving the product qualification rate.

[0017] The feeding section includes a feeding rod 41 and a first helical blade 42 fixedly installed on the outer circumference of the feeding rod 41. The pitch of the first helical blade 42 is greater than the pitch of the second helical blade 52, which has the advantage of stable material transmission. In the description of this utility model, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0018] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. Furthermore, in the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0019] Please note to all technical personnel: Although this utility model has been described according to the specific embodiments above, the inventive concept of this utility model is not limited to this utility model. Any modifications that utilize the inventive concept will be included within the scope of protection of this patent.

Claims

1. A clog-resistant conical twin-screw extruder, characterized in that: It includes two rods (1) and a cylinder (2). Each rod (1) is fitted with a bearing (3). The cylinder (2) is fitted with a fixed mounting plate (31). The mounting plate (31) is fitted with a nut sleeve (32). The nut sleeve (32) is fitted with a threaded adjusting screw (33). The end of the adjusting screw (33) is fixedly connected to the circumference of the bearing (3).

2. The anti-clogging conical twin-screw extruder according to claim 1, characterized in that: The end face of the adjusting screw (33) is fixed to the circumference of the bearing (3) by welding.

3. The anti-clogging conical twin-screw extruder according to claim 1, characterized in that: The adjusting screw (33) on each rod (1) is located on both sides of the cylinder (2).

4. The anti-clogging conical twin-screw extruder according to claim 1, characterized in that: The rod body (1) is provided with a feeding section, a melting section, a mixing section, a conveying section, a barrier section and an extrusion section in sequence along the axial direction; the melting section includes a melting rod body (51) and a second spiral blade (52) fixedly installed on the outer circumference of the melting rod body (51), and the second spiral blade (52) is provided with a plurality of through holes (53) arranged in the spiral direction; the extrusion section includes an extrusion rod body (91) and a protrusion (92) arranged on the outer circumference of the extrusion rod body (91), and the protrusion (92) forms a spiral shape on the surface of the extrusion rod body (91).

5. The anti-clogging conical twin-screw extruder according to claim 4, characterized in that: The mixing section includes a mixing rod (61), several vertical edges (62) distributed circumferentially, and several cylinders (63) set on the vertical edges (62).

6. The anti-clogging conical twin-screw extruder according to claim 4, characterized in that: The transmission section includes a transmission rod (71) and a third helical blade (72) fixedly installed on the outer circumference of the transmission rod.

7. The anti-clogging conical twin-screw extruder according to claim 4, characterized in that: The barrier section includes a barrier rod (81) and a fourth prism (82) fixedly installed on the outer circumference of the barrier rod and in a spline shape.

8. The anti-clogging conical twin-screw extruder according to claim 4, characterized in that: The feeding section includes a feeding rod (41) and a first helical blade (42) fixedly installed on the outer circumference of the feeding rod (41). The pitch of the first helical blade (42) is greater than the pitch of the second helical blade (52).

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