WO2014059715A1

WO2014059715A1 - Delivery cylinder and screw for high temperature desulphurization unit

Info

Publication number: WO2014059715A1
Application number: PCT/CN2012/084583
Authority: WO
Inventors: 易泽文; 尹成
Original assignee: 河南新艾卡橡胶工业有限公司
Priority date: 2012-10-16
Filing date: 2012-11-14
Publication date: 2014-04-24
Also published as: CN102875838A; CN102875838B

Abstract

Disclosed are a screw for a high temperature desulphurization unit and a delivery cylinder utilizing the screw, both for propelling rubber powders and adopting a segmenting design by means of the reaction of the rubber powders generated during delivery corresponding to a position of the screw such that the screw is divided into a feed segment, a plasticizing segment, a thin passing segment and a forming segment, wherein there is no chemical reaction for the rubber powders in the feed segment. By means of such a reasonable design, the reaction time and the amount of the rubber powders in different stages during delivery can be adjusted such that the time for delivering the rubber powders by the screw can be matched with the processing requirement, therefore the problem of the rubber powders being coked during the heating and delivery process is solved and the quality of the final products is improved.

Description

The invention relates to a delivery cylinder of a high-temperature desulfurization unit and a screw thereof. The application is submitted to the Chinese Patent Office on October 16, 2012, the application number is 201210396604.3, and the invention is entitled "a conveyor of a high-temperature desulfurization unit and its screw". Priority of the application, the entire contents of which are incorporated herein by reference. Technical field

The present invention relates to the field of reclaimed rubber processing technology, and more particularly to a screw for a high temperature desulfurization unit.

Background technique

Recycled rubber is a rubber that is processed from vulcanized corner scraps in the production of rubber products and has certain plasticity and can be reused. In the processing and preparation of recycled rubber, it is a critical processing step to desulfurize the vulcanized rubber to restore plasticity.

In the structural design of the high-temperature desulfurization unit, the screw is generally used in cooperation with the barrel sleeved outside the screw to achieve the purpose of conveying the rubber powder. The screw used in the prior art includes a rotating shaft and a circumferentially disposed shaft. The spiral fins, in the process of conveying the rubber powder, drive the rotating shaft to rotate, and the continuous spiral fins on the movable spiral cylinder with the rubber powder inside the spiral fin gap move, and finally achieve the purpose of conveying the rubber powder.

In the high-temperature desulfurization unit, the rubber powder undergoes a chemical reaction during the transfer process to be finally formed. However, at different stages of the process, there are certain requirements for the reaction time and the amount of rubber powder. In the prior art, the conveying cylinder of the high-temperature desulfurization unit has a uniform structure from the beginning to the end, and the time and the conveying amount of the rubber powder conveyed by the screw do not match the processing requirements, resulting in the problem of coking of the rubber powder during the heating and conveying process. This in turn affects the quality of the final product.

In summary, how to solve the problem of coking of rubber powder during heating and transportation is an urgent problem to be solved by those skilled in the art. Summary of the invention

In view of the above, a first object of the present invention is to provide a screw for a high temperature desulfurization unit. Solve the problem of coking of rubber powder during heating and conveying.

A second object of the present invention is to provide a delivery cylinder comprising the above screw.

In order to achieve the above first object, the present invention provides the following technical solutions:

A screw for a high-temperature desulfurization unit for propelling a rubber powder, comprising: a rotating shaft and a spiral blade disposed on the rotating shaft for advancing rubber powder, the screw comprising a feeding section, a plasticizing section, and a thin pass arranged in sequence a section and a forming section, wherein the pitch of the spiral blades on the feeding section is 300 mm, the spacing of the spiral blades on the plasticizing section is 200 mm-250 mm, and the spacing of the spiral blades on the thin-passing section is 100mm-150mm, the space between the spiral blades on the forming section is 100mm.

Preferably, the inside of the rotating shaft is provided with cooling holes arranged in the axial direction.

Preferably, the screw is an aluminum alloy screw.

Preferably, the hardness of the screw is from HRC 62 degrees to 65 degrees.

Preferably, the screw has an aspect ratio of 1:3-1:5.

In order to achieve the above second object, the present invention also provides a delivery cylinder for a high temperature desulfurization unit for conveying rubber powder, comprising: a screw and a barrel sleeved outside the screw, wherein the screw is Screw.

Preferably, the distance between the outermost side of the spiral blade of the screw and the inner wall of the barrel is 0.3 mm.

The screw of the high-temperature desulfurization unit provided by the invention corresponds to the position of the screw in accordance with the reaction of the rubber powder in the process of conveying, and adopts a sectional design to divide the screw into a feeding section, a plasticizing section, a thin passage section and Molding section (wherein the rubber powder in the feed section does not undergo a chemical reaction). Through such a reasonable design, the reaction time and the amount of rubber powder in different stages of the conveying process are adjusted, so that the time for conveying the rubber powder by the screw matches the processing demand and the processing requirement, thereby avoiding the problem of coking of the rubber powder during the heating and conveying process, and further Improve the quality of the final product.

Based on the above screw, the present invention also provides a conveying cylinder of a high temperature desulfurization unit.

DRAWINGS In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the description of the prior art will be briefly described below. Obviously, the drawings in the following description It is merely some embodiments of the present invention, and those skilled in the art can obtain other drawings according to the drawings without any creative work.

1 is a schematic view showing the structure of a screw of a high-temperature desulfurization unit according to an embodiment of the present invention.

The figures are marked as follows:

1-turn shaft, 2-spiral blade, A-feed section, B-plasticized section, C-thin section, D-form section.

detailed description

The core of the invention is to disclose a screw of a high-temperature desulfurization unit to solve the problem of coking of rubber powder during heating and conveying.

The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

Please refer to FIG. 1. FIG. 1 is a schematic view showing the screw structure of a high temperature desulfurization unit according to an embodiment of the present invention.

An embodiment of the present invention provides a screw for a high-temperature desulfurization unit for propelling a rubber powder, comprising: a rotating shaft 1 and a spiral blade 2 disposed on the rotating shaft 1 for propelling rubber powder, the core invention of which is that the screw includes sequentially setting Feed section A, plasticizing section B, thin section C and forming section D, the structure is as shown in Fig. 1, these sections are arranged from left to right, wherein the spacing of the spiral blades 2 on the feeding section A is 300 mm The spacing of the spiral blades 2 on the plasticizing section B is 200 mm-250 mm, the spacing of the spiral blades 2 on the thin-passing section C is 100 mm-150 mm, and the spacing between the spiral blades 2 in the forming section D is 100 mm.

The screw of the high-temperature desulfurization unit provided by the embodiment of the present invention corresponds to the position of the screw according to the reaction of the rubber powder in the process of heating and conveying, and the screw is divided into sections by a segment design. Feed section A, plasticizing section B, thin section C and forming section D (wherein the rubber powder in the feed section A does not undergo a chemical reaction). Through such reasonable design, the reaction time and the amount of rubber powder in different stages of the conveying process are adjusted, so that the time for conveying the rubber powder by the screw matches the processing demand and the processing requirement, thereby avoiding the problem of coking of the rubber powder during the heating and conveying process, and further Improve the quality of the final product.

In order to further optimize the above-described technical solution, the inside of the rotary shaft 1 is provided with cooling holes arranged in the axial direction for the cooling medium to flow to adjust the reaction temperature of the rubber powder. Here, the cooling medium may specifically be water.

In the embodiment of the present invention, the screw of the high-temperature desulfurization unit is preferably an alloy material, and specifically may be an aluminum alloy screw. As an alloy material widely used in industry, aluminum alloy material has low density, but high strength, close to or exceeds high-quality steel, good plasticity, can be processed into various shapes, and has excellent electrical conductivity, thermal conductivity and resistance. Corrosion ensures the reliability of the entire device.

Preferably, the hardness of the screw is from HRC 62 degrees to 65 degrees, which ensures the working strength during the processing, is not prone to wear, and has a long service life.

In order to further optimize the above technical solution, the aspect ratio of the screw is 1:3-1:5 to meet the processing requirements of rubber powder under different conditions.

Of course, it is also possible to adjust the specifications and materials of the above screw according to the rubber powder in actual use, and various modifications of these embodiments will be apparent to those skilled in the art. The general principles defined in the present invention can be implemented in other embodiments without departing from the spirit or scope of the invention.

In summary. According to the screw of the high-temperature desulfurization unit provided by the embodiment of the present invention, according to the corresponding relationship between the reaction of the rubber powder in the process of heating and conveying and the screw position, the screw is divided into the feeding section A and the plasticizing section B according to the segmentation design. The thin pass section C and the forming section D match the time for conveying the rubber powder by the screw with the processing requirement, avoiding the problem of coking of the rubber powder during the heating and conveying process, thereby improving the quality of the final product.

Based on the screw provided in the above embodiment, the embodiment of the present invention further provides a conveying cylinder of a high-temperature desulfurization unit for conveying rubber powder, comprising: a screw and a barrel sleeved outside the screw, the core improvement point is that The screw is the above screw. Since the transfer cylinder employs the screw of the above embodiment, the advantageous effects of the delivery cylinder can be referred to the above embodiment.

In order to further optimize the above technical solution, the distance between the outermost side of the spiral blade 2 of the screw and the inner wall of the barrel is 0.3 mm, which ensures a better conveying effect of the rubber powder in the barrel.

The various embodiments in the specification are described in a progressive manner, and each embodiment focuses on differences from other embodiments, and the same similar parts between the various embodiments can be referred to each other.

The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments are obvious to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the present invention is not intended to be limited to the embodiments shown herein, but the broadest scopes

Claims

Rights request

1. A screw of a high-temperature desulfurization unit for propelling rubber powder, including: a rotating shaft (1) and a spiral blade (2) provided on the rotating shaft (1) for propelling rubber powder, characterized in that: The screw includes a feeding section, a plasticizing section, a thin passage section and a forming section arranged in sequence. The spacing between the spiral blades (2) on the feeding section is 300mm, and the spacing between the spiral blades (2) on the plasticizing section is 300mm. ) is 200mm-250mm, the distance between the spiral blades (2) on the thin pass section is 100mm-150mm, and the distance between the spiral blades (2) on the forming section is 100mm.

2. The screw of the high-temperature desulfurization unit according to claim 1, characterized in that cooling holes arranged along the axial direction are provided inside the rotating shaft (1).

3. The screw of the high-temperature desulfurization unit according to claim 1, characterized in that the screw is an aluminum alloy screw.

4. The screw of the high-temperature desulfurization unit according to claim 3, characterized in that the hardness of the screw is HRC62 degrees to 65 degrees.

5. The screw of the high-temperature desulfurization unit according to claim 1, characterized in that the aspect ratio of the screw is 1:3-1:5.

6. A conveying barrel of a high-temperature desulfurization unit, used for conveying rubber powder, including: a screw and a barrel sleeved outside the screw, characterized in that the screw is the screw according to any one of claims 1-5 The screw mentioned above.

7. The conveying barrel of the high-temperature desulfurization unit according to claim 6, characterized in that the distance between the outermost side of the spiral blade (2) of the screw and the inner wall of the barrel is 0.3 mm.