Butyl rubber forced feeding structure based on screw extruder

Abstract

The utility model relates to a forced butyl rubber feeding structure based on a screw-type extruder, which comprises the screw-type extruder, wherein a feeding hole is formed in one end of the screw-type extruder; the feeding device is characterized by comprising a feeding box body, a feeding roller group and a driving motor, the convex strip structures are arranged on the outer walls of the smooth cylindrical feeding roller units in the annular array shape, when every two adjacent feeding roller units rotate, the convex strips located in the gaps between the two adjacent feeding roller units alternately pass through to form a meshing state, butyl rubber can be pulled into a feeding port of the screw extruder, the phenomenon that the butyl rubber is suspended is avoided, and the service life of the screw extruder is prolonged. According to the forced feeding structure for the butyl rubber, the extrusion pressure and uniformity of the butyl rubber at the output end of the screw extruder are ensured, and the uniformity of the butyl rubber coated on a product is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of butyl rubber production, in particular to a butyl rubber forced feeding structure based on a screw extruder. Background Art

[0002] In the production of butyl rubber for waterproof cloth, butyl rubber needs to be applied on the aluminum foil waterproof base tape, and then covered with an isolation film layer; butyl rubber needs to be heated and extruded through a screw extruder before application, and the extrusion uniformity of butyl rubber needs to be ensured; when feeding butyl rubber at the output end of the screw extruder, it is necessary to ensure uniform feeding to prevent large areas of air from appearing inside the screw extruder, resulting in the butyl rubber being suspended, and the pressure at the output end of the screw extruder cannot meet the requirements for uniform discharge and application of butyl rubber; therefore, conventional double-barrel feeding mechanisms cannot meet the feeding requirements of butyl rubber, and it is easy for butyl rubber to be suspended and not fed. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a butyl rubber forced feeding structure based on a screw extruder, which can solve the problem that the butyl rubber is easily suspended and cannot be fed into the screw extruder because the general butyl rubber feeding structure adopts a smooth cylindrical roller structure for feeding.

[0004] In order to solve the above technical problems, the technical solution of the utility model is: a butyl rubber forced feeding structure based on a screw extruder, comprising a screw extruder, and a feed port is arranged at one end of the screw extruder; its innovation lies in: comprising a feeding box, a feeding roller group and a driving motor;

[0005] The feeding box is arranged at the feeding port of the screw extruder, and the feeding box is a rectangular hollow shell structure, with both the top and bottom ends being opened; among the four circumferential sides of the feeding box, a pair of roller group mounting holes are arranged in the horizontal direction on a pair of oppositely arranged side surfaces;

[0006] The feeding roller group includes a pair of feeding roller units, and the feeding roller units are installed in two roller group mounting holes of the feeding box body through slewing bearings near the two end positions, and a gap for accommodating the passage of butyl rubber is formed between the feeding roller units, and one end of the feeding roller unit extends out of the feeding box body; the portion of the feeding roller unit located in the feeding box body is evenly provided with a plurality of convex strips along the circumferential direction on the outer contour, and the convex strips are parallel to the axis of the feeding roller unit; the convex strips on two adjacent feeding roller units are alternately distributed in the longitudinal section perpendicular to the axis direction of the feeding roller unit and located at the gap position; the feeding roller unit is a hollow cylindrical structure, and a plurality of heating resistors are annularly provided on the inner wall of the feeding roller unit, one end of the heating resistor extends out of the end of the feeding roller unit, and a heating joint is provided at the end of the feeding roller unit, and the heating joint of the feeding roller unit is energized in a stopped state to heat and melt the butyl rubber adhered to the surface of the feeding roller unit;

[0007] The drive motor is arranged on one side of the feeding box body, and the output end of the drive motor is connected to one end of the feeding roller group, driving the feeding roller units to move toward each other, so that the convex strips on the feeding roller units mesh with each other at the gap between two adjacent feeding roller units.

[0008] Furthermore, a connecting flange is provided at the bottom edge of the feeding box, bolt holes are provided around the feed port of the screw extruder, and the connecting flange at the bottom edge of the feeding box is connected to the bolt holes around the feed port of the screw extruder by bolts.

[0009] Furthermore, driven gears are respectively provided at the ends of the feeding roller units extending out of the outside of the feeding box, and the driven gears are meshed with each other; a driving gear is provided at the output end of the driving motor, and the driving gear cooperates with the driven gear at the end of a feeding roller unit to drive the feeding roller units to mesh with each other.

[0010] Furthermore, a butyl rubber feeding hopper is provided at the opening on the top of the feeding box.

[0011] Furthermore, the gap between the outer edge of the convex strip and the outer contour of the adjacent feeding roller unit is 4-5 cm.

[0012] The advantages of the utility model are:

[0013] 1) In the utility model, a convex strip structure is arranged in a ring array on the outer wall of a smooth cylindrical feeding roller unit. When two adjacent feeding roller units rotate, the convex strips at the gap between the two alternately pass through to form a meshing state, so that the butyl rubber can be pulled into the feed port of the screw extruder to avoid the phenomenon of the butyl rubber being suspended. This forced feeding structure of butyl rubber ensures the extrusion pressure and uniformity of the butyl rubber at the output end of the screw extruder, and ensures the uniformity of the butyl rubber applied on the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0015] Figure 1 The utility model is a main cross-sectional schematic diagram of a butyl rubber forced feeding structure based on a screw extruder.

[0016] Figure 2 The utility model is a side view of the local structure of a butyl rubber forced feeding structure based on a screw extruder. DETAILED DESCRIPTION

[0017] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0018] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] like Figure 1 Figure 2 The butyl rubber forced feeding structure based on a screw extruder shown includes a screw extruder, and a feed port is arranged at one end of the screw extruder; it includes a feeding box 1, a feeding roller group 2 and a driving motor 3.

[0020] In this embodiment, the feeding box 1 is arranged at the feed port of the screw extruder, and the feeding box 1 is a rectangular hollow shell structure with openings at the top and bottom ends; among the four circumferential sides of the feeding box 1, a pair of roller group mounting holes are arranged in the horizontal direction on a pair of oppositely arranged side surfaces.

[0021] In this embodiment, the feeding roller group 2 includes a pair of feeding roller units 21, and the feeding roller units 21 are installed in the two roller group mounting holes of the feeding box body through slewing bearings near the two ends, and a gap for accommodating the passage of butyl rubber is formed between the feeding roller units 21, and one end of the feeding roller unit 21 extends out of the feeding box body 1; the part of the feeding roller unit 21 located in the feeding box body 1 is evenly provided with a plurality of convex strips 22 along the circumferential direction on the outer contour, and the convex strips 22 are parallel to the axis of the feeding roller unit 21; two adjacent feeding roller units The convex strips 22 on 21 are alternately distributed in the longitudinal section perpendicular to the axis direction of the feed roller unit and located at the gap position; the feed roller unit 21 is a hollow cylindrical structure, and a plurality of heating resistors 23 are arranged in a ring shape on the inner wall of the feed roller unit 21, one end of the heating resistor 23 extends out of the end of the feed roller unit, and a heating joint is arranged at the end of the feed roller unit 22, and the heating joint of the feed roller unit 21 is energized in the stopped state to heat and melt the butyl rubber adhered to the surface of the feed roller unit 21;

[0022] In this embodiment, the drive motor 3 is arranged on one side of the feeding box 1, and the output end of the drive motor 3 is connected to one end of the feeding roller group, driving the feeding roller units 21 to move toward each other, so that the convex strips 22 on the feeding roller units 21 mesh with each other at the gap between two adjacent feeding roller units.

[0023] In this embodiment, a connecting flange is provided at the bottom edge of the feeding box 1, and bolt holes are provided around the feed port of the screw extruder. The connecting flange at the bottom edge of the feeding box 1 is connected to the bolt holes around the feed port of the screw extruder by bolts.

[0024] In this embodiment, driven gears 23 are respectively provided at the ends of the feeding roller unit 21 extending out of the outside of the feeding box, and the driven gears 23 are meshed with each other; a driving gear is provided at the output end of the driving motor 3, and the driving gear cooperates with the driven gear at the end of a feeding roller unit to drive the feeding roller unit to mesh with each other.

[0025] In this embodiment, a butyl rubber feeding hopper 11 is provided at the top of the feeding box 1 at the opening.

[0026] In this embodiment, the gap between the outer edge of the convex strip 22 and the outer contour of the adjacent feeding roller unit is 4-5 cm.

[0027] The working principle of the utility model is as follows: by arranging a convex strip structure in an annular array on the outer wall of a smooth cylindrical feeding roller unit, when two adjacent feeding roller units rotate, the convex strips located at the gap between the two alternately pass through to form a meshing state, so that the butyl rubber can be pulled into the feed port of the screw extruder to avoid the phenomenon that the butyl rubber is suspended. This forced feeding structure of butyl rubber ensures the extrusion pressure and uniformity of the butyl rubber at the output end of the screw extruder, and ensures the uniformity of butyl rubber coating on the product.

[0028] Those skilled in the art should understand that the present invention is not limited by the above-mentioned embodiments. The above-mentioned embodiments and the specification only illustrate the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements shall fall within the scope of the present invention to be protected.

Claims

1. A butyl rubber forced feeding structure based on a screw extruder, comprising a screw extruder, and a feed port is arranged at one end of the screw extruder; characterized in that: It includes a feeding box, a feeding roller group and a driving motor; The feeding box is arranged at the feeding port of the screw extruder, and the feeding box is a rectangular hollow shell structure, with both the top and bottom ends being opened; among the four circumferential sides of the feeding box, a pair of roller group mounting holes are arranged in the horizontal direction on a pair of oppositely arranged side surfaces; The feeding roller group includes a pair of feeding roller units, and the feeding roller units are installed in two roller group mounting holes of the feeding box body through slewing bearings near the two end positions, and a gap for accommodating the passage of butyl rubber is formed between the feeding roller units, and one end of the feeding roller unit extends out of the feeding box body; the portion of the feeding roller unit located in the feeding box body is evenly provided with a plurality of convex strips along the circumferential direction on the outer contour, and the convex strips are parallel to the axis of the feeding roller unit; the convex strips on two adjacent feeding roller units are alternately distributed in the longitudinal section perpendicular to the axis direction of the feeding roller unit and located at the gap position; the feeding roller unit is a hollow cylindrical structure, and a plurality of heating resistors are annularly provided on the inner wall of the feeding roller unit, one end of the heating resistor extends out of the end of the feeding roller unit, and a heating joint is provided at the end of the feeding roller unit, and the heating joint of the feeding roller unit is energized in a stopped state to heat and melt the butyl rubber adhered to the surface of the feeding roller unit; The drive motor is arranged on one side of the feeding box body, and the output end of the drive motor is connected to one end of the feeding roller group, driving the feeding roller units to move toward each other, so that the convex strips on the feeding roller units mesh with each other at the gap between two adjacent feeding roller units.

2. The butyl rubber forced feeding structure based on a screw extruder according to claim 1, characterized in that: The bottom edge of the feeding box is provided with a connecting flange, the feeding port of the screw extruder is surrounded by bolt holes, and the connecting flange at the bottom edge of the feeding box is connected to the bolt holes around the feeding port of the screw extruder through bolts.

3. The butyl rubber forced feeding structure based on a screw extruder according to claim 1, characterized in that: The ends of the feeding roller units extending out of the outside of the feeding box are respectively provided with driven gears, and the driven gears are meshed with each other; the output end of the driving motor is provided with a driving gear, and the driving gear cooperates with the driven gear at the end of a feeding roller unit to drive the feeding roller units to mesh with each other.

4. The butyl rubber forced feeding structure based on a screw extruder according to claim 1, characterized in that: A butyl rubber feeding hopper is arranged at the opening on the top of the feeding box.

5. The butyl rubber forced feeding structure based on a screw extruder according to claim 1, characterized in that: The gap between the outer edge of the convex strip and the outer contour of the adjacent feeding roller unit is 4-5 cm.

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