Stirring tooth structure of granulator

Abstract

The utility model discloses a stirring tooth structure of a granulator, which comprises a stirring tooth seat and stirring teeth, the bottom of the stirring tooth seat is cylindrical, the middle of the stirring tooth seat is in frustum transition, the upper part of the stirring tooth seat is cylindrical, the diameter of the upper cylinder is smaller than that of the lower cylinder, the upper cylinder is processed into internal threads, the stirring teeth are processed by cylinders, and the half-length surface of each stirring tooth is processed into threads. And two sides of the top part are symmetrically processed into slope surfaces with certain angles. The stirring tooth is simple in structure and easy to manufacture, the improved design is carried out on the basis of summarizing the abrasion rule of the stirring teeth, the easily-abraded points of the stirring teeth are effectively avoided on the premise that the stirring and rubbing functions are not affected, the service life of the stirring teeth is prolonged, the replacement and maintenance frequency of the stirring teeth is reduced, and the production efficiency is improved; and the pointed-end stirring teeth are beneficial to generating higher shearing strength, so that the power consumption is lower on the premise of generating the same shearing force.

Description

Technical Field

[0001] This utility model relates to the field of granulator technology, specifically to a granulator stirring tooth structure. Background Technology

[0002] Carbon black granulators are one of the key pieces of equipment in the carbon black production process. The wet granulation process of carbon black is a simple physical process. Powdered carbon black, granulation water, and binder are fed into the granulator in a certain proportion and granulated by high-speed mixing of the granulator's stirring teeth. Currently, most granulator stirring teeth are cylindrical or frustum-shaped, with flat-headed stirring teeth providing the best granulation effect. However, according to statistics from field usage, the sides of the stirring teeth wear out first. After about three to four months of use, the curved surfaces on both sides of the stirring teeth along the stirring shaft axis will be worn flat, and the flat tooth tips are easily worn into hemispherical tops, thus losing their flat-top kneading function. However, after the wear reaches a certain level, continued use will not further increase the wear. Summary of the Invention

[0003] The purpose of this utility model is to provide a granulator stirring tooth structure to solve the problem that the existing columnar or frustum-shaped stirring teeth are prone to wear on both sides of the axial curved surface and the flat top, which leads to structural failure, affects the granulation effect, and requires frequent replacement.

[0004] To solve the problems of the existing technology, the technical solution adopted by this utility model is as follows:

[0005] A granulator stirring tooth structure consists of a stirring tooth seat and stirring teeth. The bottom of the stirring tooth seat is cylindrical, with a truncated cone transition in the middle and a cylindrical upper part. The diameter of the upper cylinder is smaller than that of the lower cylinder. The upper cylinder is machined with internal threads. The stirring teeth are machined from a cylinder, with half of the surface machined with threads, and the other half retaining a section of cylinder at the bottom. The top two sides are symmetrically machined with slopes at a certain angle.

[0006] Preferably, the longitudinal section of the slopes on both sides of the top of the stirring tooth is an inverted V shape.

[0007] Preferably, the bottom of the stirring tooth has the same diameter as the upper cylinder of the stirring tooth seat.

[0008] Preferably, the lateral tip of the stirring tooth is perpendicular to the axial direction of the stirring shaft when it is installed.

[0009] The beneficial effects of this utility model are:

[0010] 1. The inverted V-shaped tooth tip is an improved design based on the summary of the wear pattern of the stirring teeth. Without affecting the stirring and kneading function, it effectively avoids the easy-to-wear points of the stirring teeth, extends the service life of the stirring teeth, reduces the frequency of stirring teeth replacement and maintenance, and improves production efficiency.

[0011] 2. The structure of the stirring tooth seat is lower in the bottom and higher in the top, the base is more solid, the strength is higher, the axial fracture is not easy to occur, the length of the stirring tooth part is short, only the stirring tooth part needs to be replaced after failure, the operation is simple, and the material is saved.

[0012] 3. The transverse tip of the stirring tooth is perpendicular to the axial direction of the stirring shaft during installation, the stirring tooth is arranged in a spiral manner, the axial plane has the functions of stirring and improving the axial material conveying function, and the granulation efficiency is improved.

[0013] 4. The sharp stirring tooth is beneficial to generate greater shearing strength, and the power consumption is smaller under the premise of generating the same shearing force. BRIEF DESCRIPTION OF DRAWINGS

[0014] In order to more clearly illustrate the technical schemes in the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly introduced as follows, and it should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation to the scope, and for those skilled in the art, other related drawings can also be obtained without creative labor on the premise of the drawings.

[0015] Fig. 1 It is a schematic diagram of the stirring tooth structure of the granulator of the present application.

[0016] Fig. 2 It is a schematic diagram of the stirring tooth structure of the granulator of the present application.

[0017] In the figure, 1 is a stirring tooth seat, and 2 is a stirring tooth. DETAILED DESCRIPTION

[0018] The technical schemes in the embodiments of the present application will be described clearly and completely in combination with the drawings, and obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0019] See Figs. 1-2 The present application provides a stirring tooth structure of a granulator.

[0020] For example Figs. 1-2The illustrated granulator stirring tooth structure is composed of a stirring tooth seat and a stirring tooth. The bottom of the stirring tooth seat is cylindrical, the middle is a conical transition, and the upper part is cylindrical. The diameter of the upper cylinder is smaller than that of the lower cylinder. The upper cylinder is processed into internal threads. The stirring tooth is processed from a cylinder. One half of the length of the surface is processed into threads, and the other half retains a cylindrical section at the bottom. The top is symmetrically processed into a certain angle of slope on both sides. The longitudinal section of the top of the stirring tooth is inverted V-shaped. The inverted V-shaped tooth tip is an improved design based on the summary of the stirring tooth wear rule. It effectively avoids the easy-to-wear point of the stirring tooth without affecting the mixing and rubbing function, prolongs the service life of the stirring tooth, reduces the replacement and maintenance frequency of the stirring tooth, and improves the production efficiency. The pointed stirring tooth is beneficial to generate greater shear strength. Under the premise of generating the same shear force, the power consumption is smaller.

[0021] When the stirring tooth is installed, the transverse tip is perpendicular to the axial direction of the stirring shaft. The stirring tooth is spirally arranged, and the axial plane improves the axial material conveying function while having the stirring function, improves the granulation efficiency, and makes the stirring tooth and the stirring tooth seat connected by threads, so that the stirring tooth is more convenient to install. After the tooth tip fails, only the stirring tooth needs to be replaced to be reused, which reduces the maintenance cost and improves the material utilization rate.

Claims

1. A granulator stirrer tooth configuration, characterized by, It is composed of stirring tooth seat and stirring tooth, the bottom of the stirring tooth seat is a cylinder, the middle is a conical transition, the upper part is a cylinder, the diameter of the cylinder of the upper part of the stirring tooth seat is smaller than that of the bottom, the cylinder of the upper part is processed into internal thread, the stirring tooth is processed from a cylinder, one half of the length is processed into thread, the other half retains a section of cylinder at the bottom, and the top of both sides is symmetrically processed into a certain angle slope.

2. A granulator stir-chip structure according to claim 1, wherein The longitudinal section of the slope of the top of both sides of the stirring tooth is inverted V type.

3. A granulator stir-chip structure according to claim 1, wherein The diameter of the cylinder of the bottom of the stirring tooth is the same as that of the upper part of the stirring tooth seat.

4. A granulator stir-chip structure according to claim 1, wherein The horizontal tip of the stirring tooth is perpendicular to the axial direction of the stirring shaft when installed.

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