Feeding device at feeding end of ball mill

Abstract

The utility model discloses an ore feeding device at an ore feeding end of a ball mill, which relates to the technical field of ball mills and comprises a ball mill end cover, an ore feeding short pipe, a feeding bent pipe, an ore feeding spiral and a wear-resistant short pipe, and the ore feeding short pipe is sleeved at one end, far away from a ball mill body, of the inner side of the ball mill end cover; one end of the feeding bent pipe is used for penetrating through an ore feeding short pipe; the feeding screw is arranged at one end, close to the ball mill body, of the inner side of the ball mill end cover, and the feeding screw rotates along with the ball mill body and can feed ore pulp conveyed by the feeding bent pipe into the ball mill body; the abrasion-resistant short pipe is arranged on the inner side of the feeding short pipe in a sleeving mode and detachably and fixedly connected with the feeding short pipe so as to prevent ore pulp flowing out of the gap in the lower end of the feeding bent pipe from scouring the feeding short pipe, the structure is simple, and damage to the end cover and the feeding short pipe is effectively avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of ball mills, in particular to a feeding device at the feeding end of a ball mill. Background Art

[0002] Ball mills are very important ore dressing equipment in the entire ore dressing industry. Generally, a feeding elbow is used for feeding in a ball mill. The feeding elbow enters the feeding end of the ball mill and is sealed with a sealing rubber ring. However, due to the rotation of the ball mill, the sealing ring is usually worn by the feeding elbow, resulting in a certain gap. The pulp flows out through the gap at the lower end of the feeding elbow, and the flowing-out pulp will scour the feeding short pipe of the ball mill body. After the feeding short pipe is worn through, it will damage the body end cover. The unit prices of the end cover and the feeding short pipe are high and the installation is difficult. Summary of the Utility Model

[0003] The purpose of the utility model is to provide a feeding device at the feeding end of a ball mill to solve the problems existing in the above-mentioned prior art, with a simple structure and effectively avoiding the damage of the end cover and the feeding short pipe.

[0004] To achieve the above purpose, the utility model provides the following scheme:

[0005] The utility model provides a feeding device at the feeding end of a ball mill, including: a ball mill end cover, a feeding short pipe, a feeding elbow, a feeding screw and a wear-resistant short pipe. The feeding short pipe is sleeved at one end of the inner side of the ball mill end cover far away from the ball mill body; one end of the feeding elbow is used to pass through the feeding short pipe; the feeding screw is arranged at one end of the inner side of the ball mill end cover close to the ball mill body. As the ball mill body rotates, the feeding screw can feed the pulp conveyed by the feeding elbow into the ball mill body; the wear-resistant short pipe is sleeved inside the feeding short pipe and is detachably and fixedly connected with the feeding short pipe to prevent the pulp flowing out through the gap at the lower end of the feeding elbow from scouring the feeding short pipe.

[0006] Preferably, the outer side of the wear-resistant short pipe is welded to the end section of the feeding short pipe, and the inner side of the wear-resistant short pipe abuts against the inner side of the feeding short pipe.

[0007] Preferably, the diameter of the wear-resistant short pipe gradually decreases from the outside to the inside.

[0008] Preferably, the slope between the inner end and the outer end of the wear-resistant short pipe is 5-10 degrees.

[0009] Preferably, the thickness of the wear-resistant short pipe is 12-16 mm.

[0010] Preferably, the outer diameter of the feeding elbow is 600 mm.

[0011] The utility model has obtained the following technical effects compared with the prior art:

[0012] The utility model provides a feeding device for the feeding end of a ball mill. By arranging that the wear-resistant short pipe and the feeding short pipe are detachably and fixedly connected, the wear-resistant short pipe is scoured by the ore pulp flowing out through the gap at the lower end of the feeding elbow pipe, so as to prevent the feeding short pipe from being scoured by the ore pulp flowing out through the gap at the lower end of the feeding elbow pipe, thereby effectively avoiding damage to the end cover and the feeding short pipe. In addition, the wear-resistant short pipe has a simple structure and low cost, and the wear-resistant short pipe can be replaced after being worn to a certain extent. Brief Description of the Drawings

[0013] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required to be used in the embodiments. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0014] Figure 1 It is a schematic structural diagram of the feeding device for the feeding end of the ball mill provided by the present utility model;

[0015] In the figure: 1. Ball mill end cover; 2. Feeding short pipe; 3. Feeding elbow pipe; 4. Feeding screw; 5. Wear-resistant short pipe; 6. Ore pulp. Detailed Embodiment

[0016] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, rather than all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the protection scope of the present utility model.

[0017] The purpose of the present utility model is to provide a feeding device for the feeding end of a ball mill to solve the problems existing in the above-mentioned prior art, with a simple structure and effectively avoiding damage to the end cover and the feeding short pipe.

[0018] In order to make the above-mentioned objects, features and advantages of the present utility model more obvious and understandable, the present utility model will be further described in detail below with reference to the drawings and specific embodiments.

[0019] The present utility model provides a feeding device for the feeding end of a ball mill, as Figure 1As shown in the figure, it includes: the end cover 1 of the ball mill, the short feeding pipe 2, the feeding elbow pipe 3, the feeding screw 4 and the wear-resistant short pipe 5. The short feeding pipe 2 is sleeved at one end of the inner side of the end cover 1 of the ball mill away from the ball mill body; one end of the feeding elbow pipe 3 is used to pass through the short feeding pipe 2; the feeding screw 4 is arranged at one end of the inner side of the end cover 1 of the ball mill close to the ball mill body. As the ball mill body rotates, the feeding screw 4 can feed the pulp 6 conveyed by the feeding elbow pipe 3 into the ball mill body; the wear-resistant short pipe 5 is sleeved inside the short feeding pipe 2 and is detachably and fixedly connected to the short feeding pipe 2 to prevent the pulp 6 flowing out of the gap at the lower end of the feeding elbow pipe 3 from scouring the short feeding pipe 2. By setting the wear-resistant short pipe 5 to be detachably and fixedly connected to the short feeding pipe 2, the pulp 6 flowing out of the gap at the lower end of the feeding elbow pipe 3 scours the wear-resistant short pipe 5, thereby preventing the pulp 6 flowing out of the gap at the lower end of the feeding elbow pipe 3 from scouring the short feeding pipe 2, effectively avoiding damage to the end cover and the short feeding pipe 2. In addition, the structure of the wear-resistant short pipe 5 is simple and the cost is low. After the wear-resistant short pipe 5 is worn to a certain extent, the wear-resistant short pipe 5 can be replaced.

[0020] In a preferred embodiment, the outer side of the wear-resistant short pipe 5 is connected to the end section of the short feeding pipe 2 by segment welding, and the inner side of the wear-resistant short pipe 5 abuts against the inner side of the short feeding pipe 2. When the remaining amount of wear of the wear-resistant short pipe 5 is less than 4 mm, the segment welding points are cut open and replaced.

[0021] In a preferred embodiment, the diameter of the wear-resistant short pipe 5 gradually decreases from the outside to the inside, with a simple structure, reducing the scouring force of the pulp 6 flowing out of the gap at the lower end of the feeding elbow pipe 3 on the wear-resistant short pipe 5.

[0022] In a preferred embodiment, the slope between the inner end and the outer end of the wear-resistant short pipe 5 is 5 to 10 degrees, which is convenient for the pulp 6 flowing out of the gap at the lower end of the feeding elbow pipe 3 to flow out.

[0023] In a preferred embodiment, the outer diameter of the wear-resistant short pipe 5 is 1200 mm (slightly smaller than the inner diameter of the short feeding pipe 2), the thickness is 12 - 16 mm, and the length is 400 mm.

[0024] In a preferred embodiment, the outer diameter of the feeding elbow pipe 3 is 600 mm.

[0025] In the present utility model, specific examples are used to elaborate the principle and implementation manner of the present utility model. The description of the above embodiments is only used to help understand the method and its core idea of the present utility model; at the same time, for those of ordinary skill in the art, according to the idea of the present utility model, there will be changes in the specific implementation manner and application scope. In summary, the content of this specification should not be construed as a limitation to the present utility model.

Claims

1. A feeding device for the feeding end of a ball mill, characterized in that: Comprising: The end cover of the ball mill, The short ore feeding pipe, and the short ore feeding pipe is sleeved at one end of the inner side of the end cover of the ball mill away from the ball mill body; The feeding elbow pipe, and one end of the feeding elbow pipe is used to pass through the short ore feeding pipe; The ore feeding screw, which is arranged at one end of the inner side of the end cover of the ball mill close to the ball mill body, and the ore feeding screw can enter the ball mill body with the rotation of the ball mill body to convey the pulp conveyed by the feeding elbow pipe; and The wear-resistant short pipe, which is sleeved inside the short ore feeding pipe and is detachably and fixedly connected with the short ore feeding pipe to prevent the ore pulp flowing out of the gap at the lower end of the feeding elbow pipe from scouring the short ore feeding pipe.

2. The ore feeding device at the ore feeding end of the ball mill according to claim 1, characterized in that: The outer side of the wear-resistant short pipe is welded to the end section of the short ore feeding pipe, and the inner side of the wear-resistant short pipe abuts against the inner side of the short ore feeding pipe.

3. The ore feeding device at the ore feeding end of the ball mill according to claim 2, characterized in that: The diameter of the wear-resistant short pipe gradually decreases from the outside to the inside.

4. The ore feeding device at the ore feeding end of the ball mill according to claim 3, characterized in that: The slope between the inner end and the outer end of the wear-resistant short pipe is 5-10 degrees.

5. The ore feeding device at the ore feeding end of the ball mill according to claim 4, characterized in that: The thickness of the wear-resistant short pipe is 12-16 mm.

6. The feed device at the feed end of the ball mill according to claim 1, characterized in that: The outer diameter of the feeding elbow pipe is 600 mm.

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