Screw structure of high-speed mixing mill

Abstract

The utility model discloses a screw rod structure of a high-speed mixing mill, which relates to the technical field of mixing mills, and comprises a screw rod, the screw rod is divided into a conveying section, a compression section and a metering section along the length direction of a screw body, the screw rod comprises a rotating shaft, a conveying screw blade, a mixing screw blade and a mixing head, the conveying section, the compression section and the metering section of the screw are each provided with a conveying screw blade and a mixing screw blade, mixing screw grooves are formed in the positions, corresponding to the mixing screw blades, of the conveying section, the compression section and the metering section of a rotating shaft of the screw, and the mixing head is arranged at the tail end of the metering section of the screw. The mixing head comprises a rod part connected to the end part of the rotating shaft and plate blades which are connected to the rod part and are uniformly distributed, and mixing channels are formed among the plate blades. Through the arrangement of the rotating shaft, the conveying screw blade, the mixing screw blade and the mixing head, a material melt is fully smelted, the mixing uniformity of a product is improved, and the mixing processing of the material can be quickly realized.

Description

Technical Field

[0001] The utility model relates to the technical field of mixers, in particular to a screw structure of a high-speed mixer. Background Art

[0002] The screw structure is a key component of a screw-type high-speed mixer. Many existing plastic raw materials are relatively miscellaneous. If the mixing time is insufficient, there is likely to be a problem of uneven hot mixing. In order to improve the quality of plastic products, the single-screw structure used in mixers no longer meets the requirements. Moreover, when the material is mixed in the mixing box with a single-screw structure, to achieve a good mixing effect, the mixing time is longer. Therefore, the screw structure of the high-speed mixer not only affects the efficiency of material mixing but also affects the product quality. Therefore, a new technical solution is needed to solve the above technical problems. Summary of the Utility Model

[0003] The purpose of the utility model is to provide a screw structure of a high-speed mixer, which solves the problem that the existing screw structure used in mixers is single and does not meet more requirements.

[0004] To achieve the above purpose, the utility model provides the following technical solution: A screw structure of a high-speed mixer includes a screw. The screw is divided into a conveying section, a compression section, and a metering section along the length direction of the screw body. The screw includes a rotating shaft, a conveying screw blade, a mixing screw blade, and a mixing head. The spiral directions of the conveying screw blade and the mixing screw blade are the same and are both fixed on the rotating shaft. The conveying section, compression section, and metering section of the screw are all provided with a conveying screw blade and a mixing screw blade. The rotating shaft of the screw is provided with mixing screw grooves at positions corresponding to the mixing screw blades in the conveying section, compression section, and metering section, and the spiral direction of the mixing screw grooves is the same as that of the mixing screw blades. The mixing head is arranged at the end of the metering section of the screw. The mixing head includes a rod portion connected to the end of the rotating shaft and plate blades evenly distributed on the rod portion, and mixing channels are formed between the plate blades.

[0005] Preferably, the compression ratio at the positions of the conveying screw blade and the mixing screw blade on the screw is 3:1.

[0006] Preferably, the mixing screw blade and the mixing screw groove are coaxially distributed, and the pitch of the mixing screw blade is greater than the pitch of the mixing screw groove.

[0007] Preferably, the mixing screw blade is composed of two groups of spiral blades arranged in rotational symmetry.

[0008] Preferably, one group of spiral blades of the mixing screw blade is connected end to end with the corresponding conveying screw blade.

[0009] Preferably, the screw is arranged in a mixing box, and an annular extrusion plate is arranged at the position corresponding to the discharge end of the mixing screw blade on the inner wall of the mixing box. The rotating shaft passes through the extrusion plate, and an extrusion channel is formed by the gap between the rotating shaft and the extrusion plate.

[0010] Preferably, multiple rows of plate blades are arranged along the length direction of the rod portion, and the staggered plate blades form staggered mixing channels.

[0011] The utility model has the following beneficial effects:

[0012] By setting a rotating shaft, a conveying screw blade, a mixing screw blade and a mixing head, through the cooperation of the mixing screw blade and the mixing screw groove, the mixing screw blade and the mixing screw groove have different conveying amounts, and at the same time, there is a gap between the mixing screw blade and the mixing screw groove, so that the material melt forms different flows to achieve the stirring effect, which increases the mixing degree of the material conveyed from the conveying screw blade to the position of the mixing screw blade, makes the material mixing uniform, and under the action of the mixing head, when the material melt passes through the mixing channels distributed circumferentially and staggeredly, it can be fully melted, improves the mixing uniformity of the product and can quickly realize the mixing and processing of the material. Description of the Drawings

[0013] Figure 1 is a schematic diagram of the overall structure of the utility model;

[0014] Figure 2 is a three-dimensional view of the screw of the utility model;

[0015] Figure 3 is a schematic diagram of the structure of the rotating shaft of the utility model;

[0016] Figure 4 is a schematic diagram of the structures of the conveying screw blade and the mixing screw blade of the utility model;

[0017] Figure 5 is a schematic diagram of the structure of the mixing head of the utility model;

[0018] Figure 6 is of the utility model Figure 1 enlarged view of the structure at A in.

[0019] In the figure: 1, screw; 11, rotating shaft; 111, mixing screw groove; 12, conveying screw blade; 13, mixing screw blade; 131, spiral blade; 14, mixing head; 141, rod portion; 142, plate blade; 143, mixing channel; 2, mixing machine case; 21, extrusion plate; 22, extrusion channel. Detailed Embodiments

[0020] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0021] As shown Figures 1-6 in the figure, the present utility model provides a technical solution: a screw structure of a high-speed mixer, including a screw 1. The screw 1 shears, extrudes and mixes raw materials by rotating. The screw 1 is divided into a conveying section, a compression section and a metering section along the length direction of the screw body;

[0022] The screw 1 includes a rotating shaft 11, a conveying screw blade 12, a mixing screw blade 13 and a mixing head 14. The screw 1 is arranged in a mixing machine box 2, and an annular extrusion plate 21 is arranged at the position corresponding to the discharge end of the mixing screw blade 13 on the inner wall of the mixing machine box 2. The rotating shaft 11 passes through the extrusion plate 21, and a gap between the rotating shaft 11 and the extrusion plate 21 forms an extrusion channel 22, so that the material melt output from the discharge end of the mixing screw blade 13 is extruded and output through the extrusion channel 22, and the mixing effect is good;

[0023] The spiral directions of the conveying screw blade 12 and the mixing screw blade 13 are the same, and both are fixed on the rotating shaft 11. The mixing screw blade 13 is composed of two groups of spiral blades 131 arranged in rotational symmetry. One group of spiral blades 131 of the mixing screw blade 13 is connected end to end with the corresponding conveying screw blade 12. The compression ratio at the positions of the conveying screw blade 12 and the mixing screw blade 13 on the screw 1 is 3:1. The mixing screw blade 13 plays a role in compressing and mixing materials. The conveying section, the compression section and the metering section of the screw 1 are all provided with the conveying screw blade 12 and the mixing screw blade 13;

[0024] The rotating shaft 11 of the screw 1 is provided with mixing screw grooves 111 at the positions corresponding to the mixing screw blade 13 in the conveying section, the compression section and the metering section. The spiral direction of the mixing screw grooves 111 is the same as that of the mixing screw blade 13. The mixing screw blade 13 and the mixing screw grooves 111 are coaxially distributed, and the pitch of the mixing screw blade 13 is greater than the pitch of the mixing screw grooves 111. The combination of the mixing screw blade 13 and the mixing screw grooves 111 enables better mixing of materials and can quickly realize the mixing and processing of materials;

[0025] The mixing head 14 is arranged at the tail end of the metering section of the screw 1. The mixing head 14 includes a rod portion 141 connected to the end of the rotating shaft 11 and plate blades 142 evenly distributed on the rod portion 141. A mixing channel 143 is formed between the plate blades 142. The plate blades 142 on the rod portion 141 are arranged in multiple rows along the length direction of the rod portion 141, and the staggered plate blades 142 form staggered mixing channels 143. The material melt is better dispersed through the staggered mixing channels 143, so as to achieve a sufficient and uniform melting effect.

[0026] It should be noted that in this text, terms such as "including", "comprising", or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device comprising a series of elements not only includes those elements but also includes other elements not explicitly listed, or elements inherent to such a process, method, article, or device.

[0027] Although embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. The screw structure of a high-speed mixer, characterized in that: It includes a screw rod (1), and the screw rod (1) is divided into a conveying section, a compression section and a metering section along the length direction of the screw body. The screw rod (1) includes a rotating shaft (11), a conveying screw blade (12), a mixing screw blade (13) and a mixing head (14). The spiral directions of the conveying screw blade (12) and the mixing screw blade (13) are the same, and both are fixed on the rotating shaft (11). The conveying section, the compression section and the metering section of the screw rod (1) are all provided with the conveying screw blade (12) and the mixing screw blade (13). The rotating shaft (11) of the screw rod (1) is provided with mixing screw grooves (111) at positions corresponding to the mixing screw blade (13) in the conveying section, the compression section and the metering section, and the spiral direction of the mixing screw groove (111) is the same as that of the mixing screw blade (13). The mixing head (14) is arranged at the tail end of the metering section of the screw rod (1). The mixing head (14) includes a rod portion (141) connected to the end of the rotating shaft (11) and plate blades (142) evenly distributed and connected to the rod portion (141), and a mixing channel (143) is formed between the plate blades (142).

2. The screw structure of a high-speed mixer according to claim 1, characterized in that: The compression ratio at the positions of the conveying screw blade (12) and the mixing screw blade (13) on the screw rod (1) is 3:

1.

3. The screw structure of a high-speed mixer according to claim 1, characterized in that: The mixing screw blade (13) and the mixing screw groove (111) are coaxially distributed, and the pitch of the mixing screw blade (13) is greater than the pitch of the mixing screw groove (111).

4. The screw structure of a high-speed mixer according to claim 1, characterized in that: The mixing screw blade (13) is composed of two groups of spiral blades (131) arranged in rotational symmetry.

5. The screw structure of a high-speed mixer according to claim 4, characterized in that: One group of spiral blades (131) of the mixing screw blade (13) is connected end to end with the corresponding conveying screw blade (12).

6. The screw structure of a high-speed mixer according to claim 1, characterized in that: The screw rod (1) is arranged in a mixing machine box (2), and an annular extrusion plate (21) is arranged on the inner wall of the mixing machine box (2) at a position corresponding to the discharge end of the mixing screw blade (13). The rotating shaft (11) passes through the extrusion plate (21), and an extrusion channel (22) is formed by the gap between the rotating shaft (11) and the extrusion plate (21).

7. The screw structure of a high-speed mixer according to claim 1, characterized in that: The plate blades (142) on the rod portion (141) are arranged in multiple rows along the length direction of the rod portion (141), and the staggered plate blades (142) form staggered mixing channels (143).

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