Improved structure of mill feeding device

Abstract

The utility model discloses an improved structure of a mill feeding device. The improved structure comprises a blade assembly, a star-shaped rotating cage feeding device and an air pipe, the blade assembly is connected to a straight section of a cage hopper of the star-shaped rotating cage through a bolt, and the star-shaped rotating cage is installed in a barrel of the feeding device through a rotating shaft. The star-shaped rotating cage comprises a rotating shaft, a plurality of cage hoppers, a front baffle and a rear baffle, the cage hoppers are fixedly arranged in the circumferential direction of the rotating shaft, and the front baffle and the rear baffle are fixedly installed on the two sides of the cage hoppers respectively. Different blade structures are arranged on the star-shaped rotating cage to continuously discharge powdery, fine granular and granular bulk materials with different physical properties, so that interference between the star-shaped rotating cage and the barrel is prevented, and air locking is carried out on the system at the same time. The problems of raw material blockage, material leakage and air leakage of hot air of the mill feeding device are solved, and the interchangeability, operability, safety, economical efficiency and reliability of products are improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of powder grinding, and specifically relates to an improved structure of a grinding mill feeding device. Background Art

[0002] For the raw materials that are about to enter the mill for grinding, whether the feeding is uniform or not plays a decisive role in whether the mill's working condition can be stable. If the feeding fluctuation is too large, it will cause the material layer inside the mill to be unstable, resulting in the intensification of the horizontal and vertical vibration of the mill, or even a tripping and stopping. In the production process, the feeding is uneven due to the poor working of the feeding device, resulting in the abnormal phenomenon of the vertical mill vibrating and stopping. In the past, most of the feeding devices had the problems of raw material blockage, material escape and hot air leakage.

[0003] In order to deal with the blockage of sticky and wet materials, some use pipes to connect directly into the mill. The feeding of raw material vertical mill locks the wind, especially for production lines with sticky and wet materials. In serious cases, a large amount of raw materials are piled up in the feeding device of the vertical mill. The piled materials are very hard, making it difficult to feed the vertical mill, frequent shutdowns, and seriously affecting the operation of the vertical mill.

[0004] In the prior art, the feeding device of the mill has the problem of raw material leakage. The star-shaped discharger relies on the rotation of the impeller to achieve uniform discharge. The cage rotates in the cylinder. There will be enough space between the cage and the cylinder, otherwise the cage cannot rotate. If the gap between the cage and the cylinder is large, it will cause material leakage without rotation, and cause part of the material to enter the gap between the two ends of the cage and the cylinder. During the rotation of the main shaft, the material is blown to the outside of the cylinder along the main shaft due to the wind pressure, causing material leakage at both ends of the bearing. Secondly, there is also the problem of hot air leakage. The traditional vertical mill air locking device is not particularly accurate in gap control. The cage and the cylinder are often in a state of wear. After use and wear, it causes a large amount of air leakage. The leaked air will directly increase the load of the raw material grinding system's circulation fan and tail exhaust fan, increase energy consumption, and increase more costs; and when the gap increases, it is easy to get stuck, and the use and maintenance costs are high. Utility Model Content

[0005] The purpose of this utility model is to design an improved structure of the mill feeding device in view of the defects of the above-mentioned mill feeding device, and to continuously discharge powdery, granular and granular bulk materials of different physical properties. Different blade structures are arranged on the star-shaped cage to prevent the interference between the star-shaped cage and the cylinder and lock the air of the system. The problems of material blockage, material leakage and hot air leakage of the raw material of the mill feeding device are solved, and the interchangeability, operability, safety, economy and reliability of the products are increased.

[0006] Technical Solution

[0007] In order to achieve the above technical purpose, the utility model provides an improved structure of a mill feeding device, which is characterized by comprising a blade assembly, a star-shaped cage feeding device and an air duct;

[0008] The blade assembly is connected to the straight section of the cage bucket of the star-shaped rotating cage by bolts, and the star-shaped rotating cage is installed in the cylinder of the feeding device through a rotating shaft;

[0009] The star-shaped rotating cage comprises a rotating shaft, a cage bucket, a front baffle and a rear baffle. A plurality of cage buckets are fixedly arranged along the circumferential direction of the rotating shaft. The front baffle and the rear baffle are respectively fixedly mounted on both sides of the cage bucket.

[0010] In one embodiment, the feeding device includes a shell, a cylinder, an inlet flange and a discharge flange. The cylinder is installed in the shell, and the inlet and outlet ports of the shell are respectively provided with an inlet flange and a discharge flange.

[0011] In one embodiment, a connecting hole is provided at the end of the star-shaped cage, and the connecting hole is a long waist-shaped hole for adjusting the position of the blades.

[0012] In one embodiment, the blade assembly includes blades of different structures.

[0013] In one of the embodiments, the air duct is mounted on the shell and connected to the cylinder.

[0014] Beneficial Effects

[0015] The utility model provides an improved structure of a mill feeding device, including a blade assembly, a star-shaped cage feeding device and an air duct; the blade assembly is connected to the straight section of the cage bucket of the star-shaped cage by bolts, and the star-shaped cage is installed in the cylinder of the feeding device through a rotating shaft; the star-shaped cage includes a rotating shaft, a cage bucket, a front baffle, and a rear baffle, and a plurality of cage buckets are fixedly arranged along the circumferential direction of the rotating shaft, and the front baffle and the rear baffle are fixedly installed on both sides of the cage bucket. For the continuous discharge of powdery, granular and granular bulk materials with different physical properties, different blade structures are configured on the star-shaped cage to prevent the star-shaped cage from interfering with the cylinder and lock the air of the system at the same time. The utility model solves the problems of material blockage, material leakage and hot air leakage of raw materials in the mill feeding device, and increases product interchangeability, operability, safety, economy and reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0017] Attached Figure 1 It is a structural schematic diagram of the utility model;

[0018] Attached Figure 2 Yes Figure 1 A-axis enlarged view;

[0019] Attached Figure 3 It is a left view of the utility model;

[0020] Attached Figure 4 This is a schematic diagram of the installation structure of the blade assembly in the utility model;

[0021] Attached Figure 5 This is a product diagram of a star-shaped rotating cage in the utility model; DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0023] It should be noted that when a component is referred to as being "fixed to" or "disposed on" another component, it may be directly on the other component or there may also be a central component. When a component is considered to be "connected to" another component, it may be directly connected to the other component or there may be a central component at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in the specification of this application are for illustrative purposes only and do not represent the only implementation method.

[0024] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0025] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first feature is directly in contact with the second feature, or the first feature and the second feature are indirectly in contact through an intermediate medium. Moreover, a first feature being “above”, “above” or “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below” or “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0026] Unless otherwise defined, all technical and scientific terms used in the specification of this application have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used in the specification of this application includes any and all combinations of one or more related listed items.

[0027] Example

[0028] As attached Figure 1 and 3 As shown, an improved structure of a mill feeding device comprises a blade assembly 1, a star-shaped cage 2, a feeding device 3 and an air duct 4; the blade assembly 1 is connected to the straight section of the cage bucket 204 of the star-shaped cage 2 by bolts, and the star-shaped cage 2 is installed in the cylinder 304 of the feeding device 3 through a rotating shaft 201;

[0029] As attached Figure 5 As shown, the star-shaped rotating cage 2 includes a rotating shaft 201, a cage bucket 204, a front baffle 202, and a rear baffle 203. Several cage buckets 204 are fixedly arranged along the circumferential direction of the rotating shaft 201, and the front baffle 202 and the rear baffle 203 are fixedly installed on both sides of the cage bucket 204 respectively.

[0030] The feeding device 3 includes a housing 301, a cylinder 304, an inlet flange 302 and an outlet flange 303. The cylinder 304 is installed in the housing 301. The inlet and outlet of the housing 301 are respectively provided with an inlet flange 302 and an outlet flange 303. The end of the star-shaped cage 2 is provided with a connecting hole 205, and the connecting hole 205 is a long waist-shaped hole for adjusting the position of the blade. The blade assembly 1 includes blades of different structures. The air duct 4 is installed on the housing 301 and connected to the cylinder 304.

[0031] In this embodiment, the material properties of the feed are the primary considerations for designing the star-shaped cage blade structure, including the particle size, density, humidity, fluidity, adhesion, etc. of the material. These properties will determine the size, shape and material selection of the blade structure.

[0032] As attached Figure 3 and 4 As shown in the figure, the blade is a sealing part of the feeding device, and the shape is a plate-shaped structure, and the end of the blade is made into a straight section or an edge shape. The arrangement position of the blade on the star-shaped cage has the following forms:

[0033] The A-type structure is a standard wear-resistant blade, which is located on one side of the straight section of the star-shaped cage.

[0034] The B-type structure is a double-sided wear-resistant blade, which is located on both sides of the straight section of the star-shaped cage.

[0035] The C-type structure is a metal sealing blade, which is on one side of the straight section of the star-shaped cage. It is thinner and has a better sealing effect.

[0036] The D-type structure has double-sided metal sealing blades on both sides of the straight section of the star-shaped cage. The thickness is thinner and the sealing effect is better.

[0037] The E-type structure is that the scraper blade is on one side of the straight section of the star-shaped cage, and the blade end is an edge shape, which can well control the gap with the inner wall of the cylinder.

[0038] The F-type structure is a sealing lip blade, which is on one side of the straight section of the star-shaped cage to ensure good contact with the inner wall of the cylinder.

[0039] The G-type structure is a full blade with cut edges, on one side of the full length of the straight section of the star-shaped cage

[0040] Depending on the material, the blades include wear-resistant blades, high temperature resistant blades, corrosion-resistant blades, stainless steel blades, explosion-proof blades, flexible blades, tetrafluoroethylene blades, etc.

[0041] The feeding device 3 is sealed and welded together by a housing 301, a cylinder 304, an inlet flange 302 and an outlet flange 303. The housing 301 is a welded structure, with bearings installed at both ends, and is a rotating support and mounting mechanism for the rotating shaft 201 in the star-shaped cage 2.

[0042] Under the action of the driving device, the star-shaped cage 2 rotates in the cylinder 304 of the feeding device 3, and the star-shaped cage 2 drives the cage bucket 204 to rotate. The cage bucket 204 receives materials from the inlet flange 302 and discharges materials from the outlet flange 303. The cycle continues, and the materials are continuously discharged and finally enter the mill.

[0043] The hot air enters the cage bucket 204 through the air ducts 6 at both ends of the star-shaped rotating cage 2 to dry the materials in the cage bucket 204.

[0044] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0045] The above-mentioned embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the attached claims.

Claims

1. An improved structure of a mill feeding device, characterized in that: It comprises a blade assembly (1), a star-shaped rotating cage (2), a feeding device (3) and an air duct (4); The blade assembly (1) is connected to the straight section of the cage bucket (204) of the star-shaped rotating cage (2) by means of bolts, and the star-shaped rotating cage (2) is installed in the cylinder (304) of the feeding device (3) via a rotating shaft (201); The star-shaped rotating cage (2) comprises a rotating shaft (201), a cage bucket (204), a front baffle (202), and a rear baffle (203). A plurality of cage buckets (204) are fixedly arranged along the circumferential direction of the rotating shaft (201), and the front baffle (202) and the rear baffle (203) are respectively fixedly mounted on both sides of the cage bucket (204).

2. The improved structure of a mill feeding device according to claim 1, characterized in that: The feeding device (3) comprises a shell (301), a cylinder (304), an inlet flange (302) and a discharge flange (303); the cylinder (304) is installed in the shell (301); the inlet and discharge ports of the shell (301) are respectively provided with an inlet flange (302) and a discharge flange (303).

3. The improved structure of a mill feeding device according to claim 1, characterized in that: The end of the star-shaped rotating cage (2) is provided with a connecting hole (205), and the connecting hole (205) is a long waist-shaped hole for adjusting the position of the blades.

4. The improved structure of a mill feeding device according to claim 1, characterized in that: The blade assembly (1) comprises blades of different structures.

5. The improved structure of a mill feeding device according to claim 1, characterized in that: The air duct (4) is mounted on the shell (301) and connected to the cylinder (304).

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