CN219308969U

CN219308969U - Novel pre-mill material spreading disc

Info

Publication number: CN219308969U
Application number: CN202223441585.XU
Authority: CN
Inventors: 卢洪波; 廖清泉; 章晓阳; 马峰; 卢鹏; 廖亦聪
Original assignee: Zhengzhou Dingsheng Hi Tech Energy Engineering Technology Co ltd
Current assignee: Zhengzhou Dingsheng Hi Tech Energy Engineering Technology Co ltd
Priority date: 2022-12-22
Filing date: 2022-12-22
Publication date: 2023-07-07
Anticipated expiration: 2032-12-22

Abstract

The utility model discloses a novel pre-mill material spreading disc, which comprises a material spreading disc body and a material spreading disc runner plate, wherein a wear-resistant lining plate is arranged on the material spreading disc body, the material spreading disc runner plate is an arc-shaped plate, and the material spreading disc runner plate is arranged on the wear-resistant lining plate. When the wear-resistant lining plate is excessively worn, the wear-resistant lining plate can be directly replaced with a new one without replacing the whole material spreading disc, so that the running cost of the large-scale pre-mill and the labor intensity of workers are reduced. The utility model improves the service life of the material spreading disc, reduces the replacement frequency of the material spreading disc, reduces the replacement difficulty of the material spreading disc, and reduces the operation cost of the large-scale pre-mill and the labor intensity of workers.

Description

Novel pre-mill material spreading disc

Technical Field

The utility model belongs to the technical field of pre-grinding machines, and particularly relates to a material spreading disc matched with a large-sized pre-grinding machine rotor.

Background

Along with the progress of industry, the output requirement of the pre-grinding machine is continuously improved, so that the diameter of the cylinder of the pre-grinding machine is also larger and larger, and the diameter of the material spreading disc at the uppermost end of the rotor of the pre-grinding machine is also larger and larger. With the continuous increase of the yield of the pre-mill, more and more materials enter the crushing cavity, so that the abrasion of the material spreading disc is increased. For the small-sized pre-grinding machine, the spreading disc is generally manufactured by using a common carbon steel Q235A steel plate, and the steel plate with the same material is welded on the plate to serve as a runner plate, so that the uniform spreading of the spreading disc is facilitated. The material spreading disc manufactured by the common carbon steel Q235A steel plate has poor resistance to impact of materials and is extremely easy to wear. Because the feed tray is connected with the main shaft through the key, if the feed tray is seriously worn, the feed tray needs to be replaced, and the feed tray with the structure is more troublesome to replace and can be replaced only by hanging down the rotor of the pre-grinding machine, thereby being labor-consuming and time-consuming.

Disclosure of Invention

With the enlargement of the pre-mill, the material spreading disc with the structure cannot meet the requirement of the enlargement of the pre-mill, and in order to prolong the service life of the material spreading disc, reduce the replacement frequency of the material spreading disc and reduce the replacement difficulty of the material spreading disc, the utility model provides a novel material spreading disc of the pre-mill, which is suitable for the large-scale pre-mill.

The object of the utility model is achieved in the following way:

the utility model provides a novel pre-mill broadcasting disc, includes broadcasting the charging tray body and broadcasting the charging tray runner board, installs wear-resisting welt on broadcasting the charging tray body, it is the arc to spread charging tray runner board, and it installs on wear-resisting welt to spread charging tray runner board.

Above-mentioned novel pre-mill broadcasting disc, wear-resisting welt passes through the bolt fastening on broadcasting disc body.

Above-mentioned novel pre-mill broadcast tray, the bolt is the triangle bolt.

Above-mentioned novel pre-mill broadcast tray, wear-resisting welt build-up welding is on the broadcast tray body.

Above-mentioned novel pre-mill material of broadcasting dish, the material of broadcasting the dish is NM400 high strength antifriction plate material.

Compared with the prior art, the utility model has the following beneficial effects:

1. according to the utility model, the large-scale pre-mill material spreading disc body is made of NM400 high-strength wear-resistant plate material, and the wear-resistant lining plate is arranged on the material spreading disc body, so that the service life of the material spreading disc on the large-scale pre-mill rotor can be prolonged;

2. the thickening and simulation material spreading disc runner plate structure arranged on the wear-resistant lining plate prolongs the service life of the material spreading disc runner plate.

3. When the wear-resistant lining plate is excessively worn, the wear-resistant lining plate can be directly replaced with a new one without replacing the whole material spreading disc, so that the running cost of the large-scale pre-mill and the labor intensity of workers are reduced.

The utility model improves the service life of the material spreading disc, reduces the replacement frequency of the material spreading disc, reduces the replacement difficulty of the material spreading disc, and reduces the operation cost of the large-scale pre-mill and the labor intensity of workers.

Drawings

Fig. 1 is a schematic view of a conventional spreader plate;

fig. 2 is a cross-sectional view of a conventional spreader plate;

FIG. 3 is a schematic diagram of the structure of the present utility model;

fig. 4 is a cross-sectional view A-A of fig. 3.

Detailed Description

Specific examples are given below to further clarify, complete and detailed description of the technical scheme of the utility model. The present embodiment is a preferred embodiment based on the technical solution of the present utility model, but the scope of the present utility model is not limited to the following embodiments.

The material crushing is divided into a laminated crusher and an impact crusher. The pre-grinding machine is an impact crusher, and is characterized by that it utilizes a high-speed rotating motor to drive vertical shaft type rotor to rotate, then utilizes centrifugal force to scatter the material fed into the interior of pre-grinding machine to the impact lining plate around the cylinder of the pre-grinding machine, and utilizes the high-speed impact of material and impact lining plate working surface and the mutual impact of material with different granularities in the interior of machine cavity to make the material undergo the process of fine grinding. The pre-grinding machine is a material fine crushing device with the material crushing granularity between the fine crushing material of the crusher and the grinding material of the grinder, the crushed material has high powder content, the limestone material with the medium hardness is crushed, the fine powder rate of the discharging granularity of the medium-sized pre-grinding machine is less than 1.5 mm and can reach more than 80%, and the fine powder rate of the discharging granularity of the large-sized pre-grinding machine is less than 2.0 mm and can reach more than 80%. The pre-grinding machine has greatly lowered motor power than that of the grinding machine, and lowered grinding cost of ton material.

The crushing cavity of the vertical shaft type pre-mill is a cylinder, a rotor is arranged in the center of the crushing cavity, and the rotor rotates at a high speed under the drive of a motor belt pulley. The hammerhead mounted on the rotor also rotates at high speed therewith to break up the material. For small-sized pre-grinding machines, hammers on a rotor are directly arranged on a rotor disc on a rotor main shaft, and broken raw materials from a spreading disc are beaten and broken by the hammers rotating at high speed.

Along with the progress of industry, the output requirement of the pre-grinding machine is continuously improved, so that the diameter of the cylinder of the pre-grinding machine is also larger and larger, and the diameter of the material spreading disc at the uppermost end of the rotor of the pre-grinding machine is also larger and larger. With the continuous increase of the yield of the pre-mill, more and more materials enter the crushing cavity, so that the abrasion of the material spreading disc is increased. For the small-sized pre-mill, as shown in fig. 1 and 2, the spreading disc is generally manufactured by using a common carbon steel Q235A steel plate, and the steel plate with the same material is welded on the plate to serve as a runner plate, so that the spreading disc can uniformly spread materials. The material spreading disc manufactured by the common carbon steel Q235A steel plate has poor resistance to impact of materials and is extremely easy to wear. Because the feed tray is connected with the main shaft through the key, if the feed tray is seriously worn, the feed tray needs to be replaced, and the feed tray with the structure is more troublesome to replace and can be replaced only by hanging down the rotor of the pre-grinding machine, thereby being labor-consuming and time-consuming. With the enlargement of the pre-mill, the spreading disc with the structure cannot meet the requirement of the enlargement of the pre-mill.

In order to improve the service life of a spreading disc, reduce the frequency of changing the spreading disc and reduce the difficulty of changing the spreading disc, the utility model discloses a novel pre-grinding machine spreading disc. As shown in figures 3 and 4, a novel pre-mill material spreading disc is a disc which is arranged at the uppermost end of a pre-mill rotor and used for receiving materials entering a crushing cavity from a pre-mill feed opening. Under the drive of the rotor rotating at high speed, the materials to be crushed falling onto the rotor are scattered to the crushing cavity, so that the uniform crushing of the materials is facilitated. The material spreading disc comprises a material spreading disc body 1 and a material spreading disc runner plate 4, wherein the material spreading disc body is provided with a wear-resistant lining plate 2, the material spreading disc runner plate is an arc-shaped plate, and the material spreading disc runner plate is arranged on the wear-resistant lining plate. The top end of the pre-grinding machine rotor is used for supporting a spreading disc lining plate. It is fixed through the connecting key with the rotor main shaft, carries out high-speed rotation along with the rotor, in order to protect the broadcast material disk body, has wear-resisting welt through bolt fixed mounting on it, after wear-resisting welt wearing and tearing, through dismantling the bolt, can change new lining board to avoid broadcast material disk body wearing and tearing, reduce the trouble of broadcast material disk body change.

The arc-shaped material spreading disc runner plate is more beneficial to spreading materials. Meanwhile, the arc-shaped structure runner plate simulates a material throwing path and combines the abrasion failure condition of the runner plate, so that the thickness of the runner plate is increased, and the service life of the runner plate is prolonged.

The flow channel plate of the spreading disc is a flow guide plate which is arranged on the spreading disc body and used for protecting the spreading disc body, and can guide materials to spread the materials to the crushing cavity of the pre-mill in one direction.

According to the novel pre-grinding machine material spreading disc, the wear-resistant lining plate is fixed on the material spreading disc body through bolts.

The utility model relates to a novel pre-grinding machine material spreading disc, and a bolt is a triangular bolt. Because the material spreading disc is subjected to the action of a great centrifugal force along with the high-speed rotation of the rotor, the wear-resistant lining plate arranged on the material spreading disc is designed to be fixed by the triangular bolt in order to ensure the firmness of the connection between the wear-resistant lining plate and the bolt, and the material spreading disc is a firm fixing mode, so that serious quality accidents caused by untimely maintenance and throwing out of the wear-resistant lining plate can be prevented.

The head of the fixing bolt is sunk into the wear-resistant lining plate, so that the wear-resistant lining plate is prevented from falling off due to excessive wear of the head of the fixing bolt. Meanwhile, the head of the fixed bolt is also subjected to a wear-resistant layer with the thickness of 4-6 mm so as to prolong the service life of the bolt.

According to the novel pre-grinding machine material spreading disc, the wear-resistant lining plate is overlaid on the material spreading disc body, so that the service life of the material spreading disc is prolonged.

According to the novel pre-grinding machine material spreading disc, the material of the material spreading disc is NM400 high-strength wear-resistant plate material, and the structural strength and wear resistance of the material spreading disc body are improved.

The foregoing is merely a preferred embodiment of the present utility model, and it should be noted that it will be apparent to those skilled in the art that several changes and modifications can be made without departing from the general inventive concept, and these should also be regarded as the scope of the utility model.

Claims

1. Novel pre-mill material spreading disc, including material spreading disc body (1) and material spreading disc runner board (4), its characterized in that: the wear-resistant lining plate (2) is arranged on the material spreading disc body, the material spreading disc runner plate is an arc-shaped plate, and the material spreading disc runner plate is arranged on the wear-resistant lining plate.

2. The novel pre-mill feed tray of claim 1, wherein: the wear-resistant lining plate is fixed on the material spreading disc body through bolts (3).

3. A novel pre-mill feed pan as claimed in claim 2, wherein: the bolt is a triangular bolt.

4. The novel pre-mill feed tray of claim 1, wherein: and the wear-resistant lining plate is overlaid on the spreading disc body.

5. The novel pre-mill feed tray of claim 1, wherein: the material of the material spreading disc is NM400 high-strength wear-resisting plate material.