Pre-screening device before crushing

Abstract

The utility model discloses a pre-screening device before crushing, which comprises a shell, a step-shaped screen is arranged at the upper end of the inner side surface of the shell, a lower pipeline is arranged on the side surface of the vertical surface of the screen, and a spray head which is obliquely arranged and sprays towards the upper side of the screen is arranged on the lower pipeline. A baffle is arranged on the inner side face of the portion, corresponding to the spraying direction of the sprayer, of the shell, an upper pipeline is arranged on the baffle, and evenly-distributed spraying holes are formed in the lower end of the side face of the upper pipeline. The pre-screening device before crushing is used for washing ores and removing wet ore powder and clay blocks wrapped on the surfaces of the ores before crushing the ores, so that'protective pads' of the ores are removed, the probability of deformation and crushing of coarse ore block particles can be increased, the subsequent crushing effect of the ores can be improved, the production efficiency of a crusher is improved, and the use is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of ore dressing, in particular to a pre-screening device before crushing. Background Technique

[0002] The crushing and grinding process is a preparation process or operation of the ore dressing and smelting process. It must meet the particle size requirements of the ore dressing and smelting process for ore treatment, and make the minerals fully dissociated into monomers to obtain high-quality ore dressing and smelting products and high indexes. The crushing and grinding process is divided into two categories: crushing and screening and grinding and classification, which are important components of the ore dressing plant. The quality of the crushing and grinding products directly affects the quality of the subsequent separation operation technical indexes.

[0003] When crushing some ores with high water content or more powdered ores during the crushing process, the generated wet powdered ore will wrap on the surface of the coarse ore block particles, acting as a "protective pad", which hinders the impact and extrusion of the crushing cavity of the crusher on the coarse ore block particles, reduces the probability of deformation and crushing of the coarse ore block particles, reduces the crushing effect, thereby reducing the production efficiency of the crusher and is inconvenient to use. Content of the Utility Model

[0004] The technical problem to be solved by the utility model is to overcome the existing defects, and provide a pre-screening device before crushing, which is used for washing the ore before crushing to remove the wet powdered ore and clay lumps wrapped on the surface of the ore, so as to remove the "protective pad" of the ore, which can increase the probability of deformation and crushing of the coarse ore block particles, help to improve the subsequent crushing effect of the ore, thereby improving the production efficiency of the crusher and is convenient to use, and can effectively solve the problems in the background technique.

[0005] To achieve the above purpose, the utility model provides the following technical scheme: A pre-screening device before crushing, including a housing, the upper inner side of the housing is provided with a stepped screen, a lower pipeline is arranged on the side of the vertical surface of the screen, and an inclined nozzle spraying towards the upper side of the screen is arranged on the lower pipeline. A baffle is arranged on the inner side of the housing corresponding to the spraying direction of the nozzle, and an upper pipeline is arranged on the baffle, and uniformly distributed spray holes are opened at the lower end of the side of the upper pipeline.

[0006] As a preferred technical scheme of the utility model, the lower inner side of the housing is provided with an inclined guide plate, and the moving direction of the material on the guide plate is opposite to the moving direction of the material on the screen.

[0007] As a preferred technical scheme of the utility model, a partition plate is arranged on the inner side of the housing corresponding to the higher end of the screen, and a feed inlet is formed between the partition plate and the inner wall of the housing.

[0008] As a preferred technical scheme of the utility model, the non-vertical surface part of the screen is inclined in the same direction.

[0009] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0010] The pre-screening device before crushing exemplified by the present utility model is used to wash the ore before crushing to remove the wet ore powder and clay lumps wrapped on the surface of the ore, so as to remove the "protective pad" of the ore, which can increase the probability of deformation and crushing of the coarse ore block particles, contribute to improving the subsequent crushing effect of the ore, thereby improving the production efficiency of the crusher and being convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 is a schematic structural diagram of the present utility model;

[0012] Figure 2 is Figure 1 the sectional structural diagram of;

[0013] Figure 3 is Figure 2 the bottom view structural diagram of;

[0014] Figure 4 is Figure 2 the front view of.

[0015] In the figure: 1 housing, 2 screen, 3 diversion plate, 4 baffle, 5 lower pipeline, 51 nozzle, 6 upper pipeline, 61 spray holes. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0016] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the 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 shall fall within the protection scope of the present utility model.

[0017] Please refer to Figures 1-4, the present utility model provides a technical solution: a pre-screening device before crushing, including a housing 1, symmetrically installing an external vibrator at the upper end of the side of the housing 1, and installing the base at the lower end of the side of the housing 1 on an external spring support frame. At the upper end of the inner side of the housing 1, there is a stepped screen 2. On the vertical side of the screen 2, there is a lower pipe 5. On the lower pipe 5, there is an inclined nozzle 51 spraying upward on the upper side of the screen 2. On the inner side of the housing 1 corresponding to the spraying direction of the nozzle 51, there is a baffle 4. On the baffle 4, there is an upper pipe 6. At the lower end of the side of the upper pipe 6, there are evenly distributed spray holes 61. When the ore passes through the vertical surface of the screen, the water sprayed by the nozzle 51 washes the ore from the bottom. At the same time, the baffle 4 blocks the water sprayed by the nozzle 51 and the ore, and at the same time prevents the water and small ore from moving to the outside of the housing 1. When the ore passes through the upper pipe 6, the water sprayed from the spray holes 61 washes the ore from above, thereby removing the ore powder and dirt on the surface of the ore.

[0018] Further, at the lower end of the inner side of the housing 1, there is an inclined deflector 3, and the material flow direction of the deflector 3 is opposite to the moving direction of the material on the screen 2 away from the screen 2.

[0019] Further, on the inner side of the housing 1 corresponding to the higher end of the screen 2, there is a partition board, and a feed inlet is formed between the partition board and the inner wall of the housing 1. The ore falls onto the screen 2 through the feed inlet and moves forward along the screen 2 under the action of the vibrator.

[0020] Further, the non-vertical surface part of the screen 2 is inclined in the same direction, which is convenient for the movement of the ore.

[0021] When in use:

[0022] Symmetrically install the external vibrator at the upper end of the side of the housing 1, and install the base at the lower end of the side of the housing 1 on the external spring support frame, and then control the vibrator to work, so as to vibrate the screen 2;

[0023] The ore falls onto the screen 2 through the feed inlet and moves forward along the screen 2;

[0024] When the ore passes through the vertical surface of the screen, the water sprayed by the nozzle 51 washes the ore from the bottom. At the same time, the baffle 4 blocks the water sprayed by the nozzle 51 and the ore, and at the same time prevents the water and small ore from moving to the outside of the housing 1;

[0025] When the ore passes through the upper pipe 6, the water sprayed from the spray holes 61 washes the ore from above, thereby removing the ore powder and dirt on the surface of the ore;

[0026] The washed ore is discharged through the end of the screen 2, and the water, dust and dirt pass through the screen 2 and fall on the deflector 3 and move along the deflector 3.

[0027] The utility model is used for washing ores before crushing to remove the wet ore powder and clay lumps wrapped on the surface of the ores, so as to remove the "protective pad" of the ores, which can increase the probability of deformation and crushing of the coarse ore block particles, contribute to improving the subsequent crushing effect of the ores, thereby improving the production efficiency of the crusher and being convenient to use.

[0028] The parts not disclosed in the utility model are all prior arts, and their specific structures, materials and working principles will not be elaborated. Although the embodiments of the utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A pre-crushing screening device, comprising a housing (1), characterized in that: A stepped screen (2) is provided at the upper end of the inner side surface of the housing (1); a lower pipe (5) is provided on the vertical side surface of the screen (2); a nozzle (51) is provided on the lower pipe (5) and is arranged obliquely to spray toward the upper side of the screen (2); a baffle (4) is provided on the inner side surface of the housing (1) at a position corresponding to the spraying direction of the nozzle (51); an upper pipe (6) is provided on the baffle (4); and uniformly distributed spray holes (61) are provided at the lower end of the side surface of the upper pipe (6).

2. The pre-crushing pre-screening device according to claim 1, characterized in that: The lower end of the inner side surface of the housing (1) is provided with an inclined guide plate (3), and the material on the guide plate (3) moves away from the material on the screen (2) in the opposite direction.

3. The pre-crushing pre-screening device according to claim 1, characterized in that: A baffle plate is provided on the inner side surface of the outer shell (1) and the screen (2) corresponding to the higher end, and a feed inlet is formed between the baffle plate and the inner wall of the outer shell (1).

4. The pre-crushing pre-screening device according to claim 1, characterized in that: The non-vertical surface parts of the screen (2) are arranged to be inclined in the same direction.

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