Expansion dryer discharge port mechanism capable of reducing accumulated materials

Abstract

An expansion dryer discharge port mechanism capable of reducing accumulated materials comprises a round barrel, an extrusion screw is arranged in the round barrel, a conical spiral extrusion head is arranged at the front end of the extrusion screw, a discharge template is arranged at the front end of the round barrel, a conical cavity matched with the conical spiral extrusion head is formed in the rear end of the discharge template, and a discharge port is formed in the front end of the conical cavity. And the conical head part of the conical spiral extrusion head is arranged in the conical cavity. According to the utility model, the occupancy rate of the accommodating cavity at the discharge hole in the circular barrel can be increased, material accumulation in the circular barrel is avoided, the rotary centering of the extrusion screw rod is better, the abrasion of the extrusion screw rod and the conical spiral extrusion head is avoided, the difficulty of cleaning the accumulated material at the discharge hole can be reduced, and the cleaning time is shortened.

Description

Technical Field

[0001] The utility model relates to an expansion dryer discharge port mechanism for reducing material accumulation, belonging to the field of rubber post-processing machinery. Background Art

[0002] There are two main types of discharge port structures of the existing expansion dryer: Figure 2 The screw discharge end in the barrel is a flat-end extrusion head A. This structure has a larger cavity occupancy rate in the barrel, which makes the discharge port less likely to accumulate material. However, the rotation centering of the flat-end extrusion head A is poor, and the screw is easy to swing, resulting in wear of the screw and the barrel. The second is as follows Figure 3 The screw discharge end in the barrel is a tapered end extruder head B. The tapered end extruder head B of this structure has better rotation centering and can avoid wear on the screw and the barrel. However, the volume cavity occupancy rate in the barrel is small, resulting in more material accumulation at the discharge port. Moreover, the extruder heads of the above two structures are both arranged inside the barrel. When the machine is shut down for maintenance and cleaning, the accumulated material in the barrel needs to be picked out after opening the external template, which makes cleaning difficult and takes a long time. Utility Model Content

[0003] In order to solve the problems of large material accumulation at the discharge port of an expansion dryer, severe wear of the screw and the barrel, and difficulty in cleaning the accumulated material in the barrel, the utility model provides an expansion dryer discharge port mechanism that reduces material accumulation. The utility model comprises a circular barrel 1, an extrusion screw 2 is arranged inside the circular barrel 1, the front end of the extrusion screw 2 is a conical spiral extrusion head 3, a discharge template 4 is provided at the front end of the circular barrel 1, a conical cavity 5 matching the conical spiral extrusion head 3 is provided at the rear end of the discharge template 4, a discharge port 6 is provided at the front end of the conical cavity 5, and the conical head part of the conical spiral extrusion head 3 is placed in the conical cavity 5.

[0004] The extrusion screw 2 and the conical spiral extrusion head 3 are split structures.

[0005] The working principle of this utility model is:

[0006] The extrusion screw 2 and the conical spiral extrusion head 3 rotate synchronously in the circular cylinder 1, squeezing and pushing the material entering the circular cylinder 1 forward. When the material reaches the front end of the screw 2, the conical spiral extrusion head 3 further squeezes and pushes it into the conical cavity 5 of the discharge template 4, so that the material is discharged from the discharge port 6.

[0007] The beneficial effects of the utility model are:

[0008] The tapered spiral extrusion head 3 at the front end of the extrusion screw 2 can increase the cavity occupancy rate at the discharge port in the circular cylinder 1, thereby avoiding material accumulation inside the circular cylinder 1, and can also make the rotation centering of the extrusion screw 2 better, thereby avoiding wear of the extrusion screw 2 and the tapered spiral extrusion head 3; the tapered head part of the tapered spiral extrusion head 3 is extended into the tapered cavity 5 of the discharge template 4, so that the final accumulated material of the expansion dryer is concentrated in the tapered cavity 5 on the discharge template 4. When the machine is shut down to clean the accumulated material, it is only necessary to remove the discharge template 4 to complete the cleaning, which reduces the cleaning difficulty and shortens the cleaning time. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is a structural diagram of the present utility model.

[0010] Figure 2 It is a structural diagram of the flat-end extrusion head A.

[0011] Figure 3 It is a structural diagram of the tapered end extruder B. DETAILED DESCRIPTION

[0012] The specific implementation of this utility model can be found in Figures 1 to 3 A discharge port mechanism of an expansion dryer for reducing material accumulation comprises a circular cylinder 1, an extrusion screw 2 is arranged inside the circular cylinder 1, the front end of the extrusion screw 2 is a conical spiral extrusion head 3, a discharge template 4 is arranged at the front end of the circular cylinder 1, a conical cavity 5 matching the conical spiral extrusion head 3 is arranged at the rear end of the discharge template 4, a discharge port 6 is arranged at the front end of the conical cavity 5, the conical head part of the conical spiral extrusion head 3 is placed in the conical cavity 5, and the extrusion screw 2 and the conical spiral extrusion head 3 are a split structure.

Claims

1. An expansion dryer discharge port mechanism for reducing material accumulation, comprising a circular cylinder (1), an extrusion screw (2) being arranged inside the circular cylinder (1), characterized in that: The front end of the extrusion screw (2) is a conical spiral extrusion head (3), the front end of the circular cylinder (1) is provided with a discharge template (4), the rear end of the discharge template (4) is provided with a conical cavity (5) matching the conical spiral extrusion head (3), the front end of the conical cavity (5) is provided with a discharge port (6), and the conical head part of the conical spiral extrusion head (3) is placed in the conical cavity (5).

2. The expansion dryer discharge port mechanism for reducing material accumulation according to claim 1, characterized in that: The extrusion screw (2) and the conical spiral extrusion head (3) are of separate structures.

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