Replaceable wear-resistant accessory of flotation machine main shaft

Abstract

The utility model relates to a replaceable wear-resistant accessory for a main shaft of a flotation machine, which aims at solving the technical problems that the main shaft of the flotation machine is seriously worn and is inconvenient to replace, and adopts the technical scheme that the wear-resistant accessory is arranged on the main shaft which is over against a slurry inlet pipe in a vacuum cavity of the flotation machine; comprising an inner wear-resistant layer, an outer wear-resistant layer and a plurality of bolts, each inner wear-resisting layer comprises two semicircular hard lantern rings, connecting parts are arranged at the two ends of each inner wear-resisting layer, the outer wear-resisting layers are two wear-resisting sleeves matched with the lantern rings of the inner wear-resisting layers, the two wear-resisting sleeves are arranged on the hard lantern rings of the two inner wear-resisting layers in a sleeving mode, and the two wear-resisting sleeves are fixedly connected through a plurality of bolts at the connecting parts. The main shaft is protected through the inner abrasion-resistant layer and the outer abrasion-resistant layer, abrasion of the abrasion position of the main shaft caused by ore pulp is greatly reduced, the service life is prolonged, in addition, abrasion-resistant accessories are convenient to replace, and operation difficulty and maintenance cost are reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of flotation machine accessories, and in particular relates to a replaceable wear-resistant accessory for a main shaft of a flotation machine. Background Art

[0002] Self-aspirated mechanical stirring flotation machine is a flotation machine that relies on mechanical stirring to form a partial vacuum, achieve a pressure difference inside and outside the flotation machine, and thus inhale air and slurry.

[0003] The main structure of the equipment is as follows:

[0004] like Figure 1 As shown, there is a pulley at the upper end of the main shaft of the existing flotation machine. The motor drives the pulley, the main shaft, and the rotor to rotate, and the slurry in the vacuum chamber 4 is thrown out, so as to form a vacuum in the vacuum chamber 4. Air is sucked in through the air inlet pipe 3 under the action of the pressure difference. The mounting block 5 is provided with mounting holes for mounting the slurry inlet pipe and the middling return pipe;

[0005] The main problems are:

[0006] In the vacuum chamber 4, due to the rotation of the rotor, the slurry continuously impacts the main shaft 1, causing the main shaft 1 to wear faster at this position. Often, when other parts of the main shaft 1 are intact, this position has been severely worn and is about to break, so that a new shaft has to be replaced. Before each maintenance operation, the grinding and flotation system needs to be parked and the slurry in the flotation tank needs to be emptied. The operation time is about 3 hours, which seriously affects the operation rate of the grinding and flotation system equipment; the internal space of the flotation tank is small, maintenance is inconvenient, and the labor intensity of employees is high; and the flotation machine is prone to broken shafts during operation, affecting daily production, which leads to problems such as high equipment failure rate, short main shaft service life, and high labor intensity of workers. Utility Model Content

[0007] The utility model aims to solve the above problems and provide a replaceable wear-resistant accessory for the main shaft of a flotation machine.

[0008] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0009] A replaceable wear-resistant accessory for a main shaft of a flotation machine, the wear-resistant accessory is arranged on the main shaft directly facing the pulp inlet pipe in the vacuum chamber of the flotation machine, and comprises an inner wear-resistant layer, an outer wear-resistant layer and a plurality of bolts;

[0010] The inner wear-resistant layer includes two semicircular hard rings with connecting parts at both ends. The outer wear-resistant layer is two wear-resistant sleeves matching the inner wear-resistant layer rings. The two wear-resistant sleeves are arranged on the two hard rings of the inner wear-resistant layer and are fixedly connected at the connecting parts by a plurality of bolts.

[0011] Furthermore, an end wear-resistant layer is provided at the upper end of the outer wear-resistant layer, and connecting portion sleeve layers matching the connecting portion are provided at both ends of the side wall.

[0012] Furthermore, the outer wear-resistant layer is made of rubber.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. The utility model protects the main shaft through two wear-resistant layers, the inner wear-resistant layer and the outer wear-resistant layer, which greatly reduces the wear of the slurry on the wear position of the main shaft and prolongs the service life;

[0015] 2. The utility model only needs to loosen the bolts of the wear-resistant parts during the flotation machine maintenance to replace them. Moreover, only the wear-resistant parts need to be replaced without replacing the main shaft, which greatly reduces the difficulty of operation and maintenance costs and improves the operation efficiency;

[0016] 3. The outer wear-resistant layer of the utility model can not only improve the wear resistance of the main shaft, but also increase the sealing between the inner wear-resistant layers to prevent the slurry from penetrating into the main shaft. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the structure of the flotation machine of the utility model;

[0018] Figure 2 It is a schematic diagram of the structure of the utility model;

[0019] Figure 3 It is a schematic diagram of the structure of the utility model;

[0020] In the figure: 1, main shaft; 2, slurry outlet pipe; 3, air inlet pipe; 4, vacuum chamber; 5, mounting block; 6, inner wear-resistant layer; 7, outer wear-resistant layer; 8, bolts;

[0021] 6.1, connecting part; 7.1, outer wear-resistant layer body; 7.2, connecting part sleeve layer; 7.3, end wear-resistant layer. DETAILED DESCRIPTION

[0022] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0023] like Figure 1-3 As shown, a replaceable wear-resistant accessory of a flotation machine main shaft, the wear-resistant accessory is arranged on the main shaft 1 facing the pulp inlet pipe in the vacuum chamber 4 of the flotation machine, and includes an inner wear-resistant layer 6, an outer wear-resistant layer 7 and a plurality of bolts 8;

[0024] The inner wear-resistant layer 6 comprises two semicircular hard sleeves, with connecting parts 6.1 provided at both ends. The outer wear-resistant layer 7 is two rubber wear-resistant sleeves matching the sleeves of the inner wear-resistant layer 6. The two rubber wear-resistant sleeves are arranged on the two hard sleeves of the inner wear-resistant layer 6 and are fixedly connected at the connecting part 6.1 by a plurality of bolts 8. The two ends of the side walls of the outer wear-resistant layer 7 are provided with connecting sleeve layers 7.2 matching the connecting part (6.1), and the upper end is provided with an end wear-resistant layer 7.3.

[0025] The working process of this utility model:

[0026] When the utility model is used, the outer wear-resistant layer 7 is sleeved on the hard sleeve ring of the inner wear-resistant layer 6, and the two halves are fixedly arranged on the main shaft 1 opposite to the slurry inlet pipe in the vacuum chamber 4 by bolts 8 at the connecting part 6.1. The inner wear-resistant layer 6 supports the outer wear-resistant layer 7, and the outer wear-resistant layer 7 plays a role in wear resistance and buffering slurry. The outer wear-resistant layer body 7.1 protects the main body of the inner wear-resistant layer 6, the connecting part sleeve 7.2 protects the connecting part 6.1, and the end wear-resistant layer 7.3 protects the upper end of the inner wear-resistant layer 6. At the same time, the connecting part sleeve 7.2 is tightly combined together at the connecting part 6.1 by bolts 8, and also plays a sealing role, preventing the slurry from penetrating into the main shaft 1 through the gap of the connecting part 6.1 and causing wear to the main shaft 1.

Claims

1. A replaceable wear-resistant accessory for a flotation machine main shaft, characterized in that: The wear-resistant fitting is arranged on the main shaft (1) facing the pulp inlet pipe in the vacuum chamber (4) of the flotation machine, and comprises an inner wear-resistant layer (6), an outer wear-resistant layer (7) and a plurality of bolts (8); The inner wear-resistant layer (6) comprises two semicircular hard collars with connecting parts (6.1) at both ends; the outer wear-resistant layer (7) comprises two wear-resistant sleeves matching the collars of the inner wear-resistant layer (6); the two wear-resistant sleeves are arranged on the two hard collars of the inner wear-resistant layer (6) and are fixedly connected at the connecting parts (6.1) by a plurality of bolts (8).

2. The replaceable wear-resistant accessory of the main shaft of a flotation machine according to claim 1, characterized in that: An end wear-resistant layer (7.3) is provided at the upper end of the outer wear-resistant layer (7), and connecting portion sleeve layers (7.2) matching the connecting portion (6.1) are provided at both ends of the side wall.

3. The replaceable wear-resistant accessory of the main shaft of a flotation machine according to claim 1, characterized in that: The outer wear-resistant layer (7) is made of rubber.

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