Screw for environment-friendly rich mineral paper making extruder and environment-friendly rich mineral paper making extruder

Abstract

The utility model provides a screw rod for an environment-friendly rich mineral paper making extruder and the environment-friendly rich mineral paper making extruder. The ratio of the diameter of the rod body in the feeding section to the outer diameter of the screw is larger than 0.75 and smaller than 0.8, the ratio of the diameter of the rod body in the shearing compression section to the outer diameter of the screw is larger than 0.85 and smaller than 0.9, and by increasing the depth of the feeding section and the depth of the shearing compression section, the feeding effect can be effectively improved, the temperature of the feeding section and the temperature of the shearing compression section are guaranteed, pressure fluctuation is relieved, and the service life of the screw is prolonged. And meanwhile, a barrier structure is arranged between the shearing compression section and the dispersion section, and the compression effect of the shearing compression section is improved through the barrier structure, so that the feeding stability and the plasticizing and dispersion effects are finally improved.

Description

Technical Field

[0001] The utility model relates to the field of stone paper processing, and in particular to a screw for an environmentally friendly stone paper papermaking extruder and an environmentally friendly stone paper papermaking extruder. Background Art

[0002] During the production and operation of the environmentally friendly stone paper machine, the extruder has problems such as extrusion pressure fluctuations, high temperature in the feed section and poor plasticization effect, which cause abnormal fluctuations in film blowing, and ultimately cause uneven thickness, creases, dead marks, live marks, black stripes, etc. on the surface of the paper, affecting product quality. In addition to raw material reasons, the main cause of extruder operation fluctuations is screw problems, which are generally caused by abnormal feed caused by wear or structural defects. Utility Model Content

[0003] In view of this, in order to solve at least one of the above problems, the embodiments disclosed in the present invention provide a screw for an environmentally friendly stone paper making extruder and an environmentally friendly stone paper making extruder.

[0004] In order to solve the above technical problems, the embodiment disclosed in the first aspect of the present utility model adopts the following technical solutions:

[0005] A screw for an environmentally friendly stone paper extruder, the screw for the environmentally friendly stone paper extruder comprising a feed section, a first transition section, a shearing and compression section, a dispersion section, a second transition section and a metering section sequentially connected from a feed end to a discharge end, the screw for the environmentally friendly stone paper extruder comprising a rod body and a thread structure arranged on the rod body, wherein the diameter of the rod body in the feed section is smaller than the diameter of the rod body in the shearing and compression section, and the diameter of the rod body in the first transition section gradually increases along the direction from the feed end to the discharge end;

[0006] The ratio of the diameter of the rod body in the feeding section to the outer diameter of the screw is greater than 0.75 and less than 0.8;

[0007] The ratio of the diameter of the rod body in the shear compression section to the outer diameter of the screw is greater than 0.85 and less than 0.9;

[0008] A barrier structure is arranged between the shear compression section and the dispersion section, the outer diameter of the barrier structure is the same as the outer diameter of the screw, and a first groove group and a second groove group are arranged on the outer surface of the barrier structure, the first groove group includes a plurality of first grooves, the inlet end of the first groove passes through the first end face of the barrier structure, and the outlet end of the first groove is closed, the second groove group includes a plurality of second grooves, the inlet end of the second groove is closed, and the outlet end of the second groove passes through the second end face of the barrier structure, and the first end face is closer to the feed end than the second end face.

[0009] In some embodiments of the utility model, the barrier structure includes a first shaft segment and a second shaft segment arranged on the side of the first shaft segment away from the feed end, the first groove is arranged on the first shaft segment, and a plurality of the first grooves are arranged at intervals along the circumference of the first shaft segment, and the second groove is arranged on the second shaft segment, and a plurality of the second grooves are arranged at intervals along the circumference of the second shaft segment.

[0010] In some embodiments of the present invention, a third groove is further provided on the outer surface of the barrier structure, both ends of the third groove are closed ends, and the third groove spans the first shaft segment and the second shaft segment.

[0011] In some embodiments of the present invention, one third groove is disposed between every two adjacent first grooves;

[0012] One third groove is disposed between every two adjacent second grooves.

[0013] In some embodiments of the utility model, the diameter of the rod body in the feeding section is 92 mm, and the depth of the threaded structure in the feeding section is 14 mm;

[0014] The diameter of the rod body in the shear compression section is 107 mm, and the depth of the threaded structure in the shear compression section is 6.5 mm.

[0015] In some embodiments of the present invention, the ratio of the diameter of the rod body in the metering section to the outer diameter of the screw is greater than 0.82 and less than 0.85.

[0016] In some embodiments of the present invention, the diameter of the rod body in the metering section is 101 mm, and the depth of the threaded structure in the metering section is 9.5 mm.

[0017] In some embodiments of the present invention, at least one separation structure is provided at the discharge end of the screw.

[0018] In some embodiments of the utility model, the outer diameter of the separation structure is the same as the outer diameter of the screw, and a plurality of fourth grooves are provided on the outer surface of the separation structure, and both ends of the fourth grooves pass through the two end surfaces of the separation structure.

[0019] The embodiment disclosed in the second aspect of the present utility model adopts the following technical solution:

[0020] An environmentally friendly stone paper making extruder, the environmentally friendly stone paper making extruder comprising the screw as described above.

[0021] The beneficial effect of the utility model is as follows: the embodiment disclosed in the utility model provides a screw for an environmentally friendly stone papermaking extruder, the ratio of the diameter of the rod body in the feed section to the outer diameter of the screw is greater than 0.75 and less than 0.8, the ratio of the diameter of the rod body in the shear compression section to the outer diameter of the screw is greater than 0.85 and less than 0.9, and by increasing the depth of the feed section and the shear compression section, the feeding effect can be effectively increased, the temperature of the feed section and the shear compression section can be ensured, and the pressure fluctuation can be mitigated. At the same time, a barrier structure is set between the shear compression section and the dispersion section, and the compression effect of the shear compression section is improved by the barrier structure, thereby ultimately achieving the improvement of feeding stability, plasticization and dispersion effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A front view of a screw for an environmentally friendly stone papermaking extruder provided by a specific embodiment of the present application is shown;

[0023] Figure 2 Show Figure 1 A partial enlarged view of the middle A;

[0024] Figure 3 Show Figure 1 A partial enlarged view of point B in the middle.

[0025] in:

[0026] 10. Feed section; 20. First transition section; 30. Shear compression section; 40. Dispersion section; 50. Second transition section; 60. Metering section; 70. Barrier structure; 71. First groove; 72. Second groove; 73. Third groove; 80. Separation structure; 81. Fourth groove. DETAILED DESCRIPTION

[0027] The specific implementation of the utility model is further described in detail below in conjunction with the drawings and embodiments.

[0028] like Figures 1 to 3 As shown, an embodiment of the present disclosure provides a screw for an environmentally friendly stone papermaking extruder, wherein the screw for the environmentally friendly stone papermaking extruder comprises a feed section 10, a first transition section 20, a shear compression section 30, a dispersion section 40, a second transition section 50 and a metering section 60 which are sequentially connected from a feed end to a discharge end, and the screw for the environmentally friendly stone papermaking extruder comprises a rod body and a threaded structure arranged on the rod body, wherein the diameter of the rod body in the feed section 10 is smaller than the diameter of the rod body in the shear compression section 30, and the diameter of the rod body in the first transition section 20 gradually increases in the direction from the feed end to the discharge end.

[0029] The ratio of the diameter of the rod body in the feed section 10 to the outer diameter of the screw is greater than 0.75 and less than 0.8. For example, the diameter of the rod body in the feed section 10 is changed from 97.8 mm to 92 mm, and the depth of the thread structure in the feed section 10 is increased from 11.1 mm to 14 mm. The ratio of the diameter of the rod body in the shearing and compression section 30 to the outer diameter of the screw is greater than 0.85 and less than 0.9. For example, the diameter of the rod body in the shearing and compression section 30 is reduced from 108 mm to 107 mm, and the depth of the thread structure in the shearing and compression section 30 is 6.5 mm.

[0030] A barrier structure 70 is arranged between the shear compression section 30 and the dispersion section 40. The outer diameter of the barrier structure 70 is the same as the outer diameter of the screw. A first groove group and a second groove group are arranged on the outer surface of the barrier structure 70. The first groove group includes a plurality of first grooves 71. The inlet end of the first groove 71 passes through the first end face of the barrier structure 70, and the outlet end of the first groove 71 is closed. The second groove group includes a plurality of second grooves 72. The inlet end of the second groove 72 is closed, and the outlet end of the second groove 72 passes through the second end face of the barrier structure 70. The first end face is closer to the feed end than the second end face.

[0031] In the screw for the environmentally friendly stone papermaking extruder provided in this embodiment, the ratio of the diameter of the rod body in the feed section 10 to the outer diameter of the screw is greater than 0.75 and less than 0.8, and the ratio of the diameter of the rod body in the shear compression section 30 to the outer diameter of the screw is greater than 0.85 and less than 0.9. By increasing the depth of the feed section 10 and the shear compression section 30, the feeding effect can be effectively increased, the temperature of the feed section 10 and the shear compression section 30 can be ensured, and the pressure fluctuation can be mitigated. At the same time, a barrier structure 70 is set between the shear compression section 30 and the dispersion section 40. The compression effect of the shear compression section 30 is improved by the barrier structure 70, thereby ultimately achieving the improvement of feeding stability, plasticization and dispersion effects.

[0032] The screw for the environmentally friendly stone paper extruder provided in this embodiment is used to solve the problems caused by extrusion pressure fluctuations, high temperature of the feed section 10 and poor plasticization effect, which cause abnormal fluctuations in film blowing and ultimately cause problems such as uneven thickness, creases, dead marks, live marks, black stripes, etc. on the surface of the paper.

[0033] In one embodiment, if Figure 2 As shown, the barrier structure 70 includes a first shaft segment and a second shaft segment arranged on the side of the first shaft segment away from the feed end, the first groove 71 is arranged on the first shaft segment, and a plurality of the first grooves 71 are arranged at intervals along the circumference of the first shaft segment, the second groove 72 is arranged on the second shaft segment, and a plurality of the second grooves 72 are arranged at intervals along the circumference of the second shaft segment.

[0034] In one embodiment, continue to refer to Figure 2 The outer surface of the barrier structure 70 is also provided with a third groove, both ends of which are closed ends, and the third groove spans the first shaft section and the second shaft section. By providing the third groove, the barrier structure 70 can improve the material conveying capacity while ensuring the barrier effect of the barrier structure 70 on the material.

[0035] In one embodiment, one third groove is disposed between each two adjacent first grooves 71 , and one third groove is disposed between each two adjacent second grooves 72 , so as to ensure uniformity of material transportation.

[0036] In one embodiment, the ratio of the diameter of the rod body in the metering section 60 to the outer diameter of the screw is greater than 0.82 and less than 0.85. For example, the diameter of the rod body in the metering section 60 is reduced from 102 mm to 101 mm, and the depth of the thread structure in the metering section 60 is 9.5 mm. This further increases the feeding effect.

[0037] The rod body is of equal diameter structure in both the dispersion section 40 and the metering section 60, and the diameter of the rod body in the dispersion section 40 is smaller than that in the shear compression section 30, and the diameter of the rod body in the metering section 60 is larger than that in the dispersion section 40. The diameter of the rod body in the second transition section 50 gradually increases to achieve transition.

[0038] In order to ensure the dispersion effect, further, Figure 3 As shown, the discharge end of the screw is provided with at least one separation structure 80. The separation structure 80 can further improve the dispersion effect of the material. The number of the separation structures 80 is not limited, and can be one or more, for example, can be four.

[0039] In one embodiment, if Figure 3 As shown, the outer diameter of the separation structure 80 is the same as the outer diameter of the screw, and a plurality of fourth grooves 81 are provided on the outer surface of the separation structure 80 , and both ends of the fourth grooves 81 pass through the two end surfaces of the separation structure 80 .

[0040] An embodiment of the present disclosure provides an environmentally friendly stone paper making extruder, the environmentally friendly stone paper making extruder comprising a barrel and a screw for the environmentally friendly stone paper making extruder as described above arranged in the barrel.

[0041] The above implementation modes are only used to illustrate the present invention, but not to limit the present invention. Ordinary technicians in the relevant technical field can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, all equivalent technical solutions also belong to the scope of the present invention. The scope of patent protection of the present invention should be limited by the claims.

Claims

1. A screw for an environmentally friendly stone paper extruder, characterized in that: The screw for the environmentally friendly stone paper extruder comprises a feed section, a first transition section, a shearing and compression section, a dispersion section, a second transition section and a metering section which are sequentially connected from the feed end to the discharge end, and the screw for the environmentally friendly stone paper extruder comprises a rod body and a thread structure arranged on the rod body, wherein the diameter of the rod body in the feed section is smaller than the diameter of the rod body in the shearing and compression section, and the diameter of the rod body in the first transition section gradually increases along the direction from the feed end to the discharge end; The ratio of the diameter of the rod body in the feeding section to the outer diameter of the screw is greater than 0.75 and less than 0.8; The ratio of the diameter of the rod body in the shear compression section to the outer diameter of the screw is greater than 0.85 and less than 0.9; A barrier structure is arranged between the shear compression section and the dispersion section, the outer diameter of the barrier structure is the same as the outer diameter of the screw, and a first groove group and a second groove group are arranged on the outer surface of the barrier structure, the first groove group includes a plurality of first grooves, the inlet end of the first groove passes through the first end face of the barrier structure, and the outlet end of the first groove is closed, the second groove group includes a plurality of second grooves, the inlet end of the second groove is closed, and the outlet end of the second groove passes through the second end face of the barrier structure, and the first end face is closer to the feed end than the second end face.

2. The screw for the environmentally friendly stone paper extruder according to claim 1, characterized in that: The barrier structure includes a first shaft segment and a second shaft segment arranged on the side of the first shaft segment away from the feed end, the first groove is arranged on the first shaft segment, and a plurality of the first grooves are arranged at intervals along the circumference of the first shaft segment, the second groove is arranged on the second shaft segment, and a plurality of the second grooves are arranged at intervals along the circumference of the second shaft segment.

3. The screw for the environmentally friendly stone paper extruder according to claim 2, characterized in that: A third groove is also provided on the outer surface of the barrier structure, both ends of the third groove are closed ends, and the third groove spans the first shaft segment and the second shaft segment.

4. The screw for the environmentally friendly stone paper extruder according to claim 3, characterized in that: One third groove is disposed between each two adjacent first grooves; One third groove is disposed between every two adjacent second grooves.

5. The screw for the environmentally friendly stone paper extruder according to any one of claims 1 to 4, characterized in that: The diameter of the rod body in the feeding section is 92 mm, and the depth of the thread structure in the feeding section is 14 mm; The diameter of the rod body in the shear compression section is 107 mm, and the depth of the threaded structure in the shear compression section is 6.5 mm.

6. The screw for the environmentally friendly stone paper extruder according to any one of claims 1 to 4, characterized in that: The ratio of the diameter of the rod body in the metering section to the outer diameter of the screw is greater than 0.82 and less than 0.

85.

7. The screw for the environmentally friendly stone paper extruder according to claim 6, characterized in that: The diameter of the rod body in the metering section is 101 mm, and the depth of the thread structure in the metering section is 9.5 mm.

8. The screw for the environmentally friendly stone paper extruder according to any one of claims 1 to 4, characterized in that: The discharge end of the screw is provided with at least one separation structure.

9. The screw for the environmentally friendly stone paper extruder according to claim 8, characterized in that: The outer diameter of the separation structure is the same as the outer diameter of the screw rod. A plurality of fourth grooves are arranged on the outer surface of the separation structure. Both ends of the fourth grooves pass through the two end surfaces of the separation structure.

10. An environmentally friendly stone paper extruder, characterized in that: The environmentally friendly stone paper making extruder comprises a screw as described in any one of claims 1 to 9.

Images