CN219232577U - Ore discharging device of ball mill - Google Patents

Abstract

The utility model relates to the technical field of ball mills, in particular to a ball mill ore discharging device which is used for connecting a grid type ball mill with a classifier. The device comprises a box body, wherein a bell mouth of a ball mill ore discharging bushing penetrates through a side panel of the box body and is inserted into the box body, the front end of the bell mouth of the ball mill ore discharging bushing is connected with an ore discharging stranding cage, and a U-shaped waste belt is fixed between a U-shaped mouth of the side panel and the bell mouth of the ball mill ore discharging bushing; an iron receiving grate welded by steel bars is arranged below an outlet of the ore discharge stranding cage in the box body, a certain gradient is arranged on the surface of the iron receiving grate, and an iron gate is arranged at an ore discharge opening of the iron receiving grate. Has the characteristics of reinforced structure and good use effect.

Description

Ore discharging device of ball mill

Technical Field

The utility model relates to the technical field of ball mills, in particular to a ball mill ore discharging device which is used for connecting a grid type ball mill with a classifier.

Background

In the prior art, a ball mill and a classifier are important classifying equipment in a mineral separation process, and the working principle of the ball mill is that ore is ground to a specified size fraction by using a grinding meson steel ball and water, and ore pulp is fed into the classifier through a chute. The classifier is used for separating mineral aggregates with different particle sizes in ore pulp, wherein the particle sizes reach the specified mineral aggregates, and the mineral aggregates enter a next classification process through the buoyancy of water. While the ball mill is typically connected to a classifier as a discharge chute. The outlet of the ball mill is connected with the bell mouth of the ore discharging bushing of the ball mill, and the front end of the bell mouth of the ore discharging bushing is connected with the ore discharging stranding cage. The lattice type ball mill has the characteristics that the ore grinding efficiency is high, the ore discharge size is thicker, when the water pressure of the ore feeding water of the ball mill is unstable, the phenomenon of coarse running is caused by too large ore feeding water, the phenomenon of belly expansion of the ball mill is caused by too small ore feeding water, no matter what the phenomenon is, the impact is caused on an ore discharge chute, the abrasion of the ore discharge chute is serious, and the ore running and the ore overflowing are serious. When the lining plate of the ore discharging end of the ball mill is damaged, a large number of steel balls directly enter the ore discharging chute, if nursing is not timely, the steel balls enter the groove body of the classifier through the ore discharging chute, so that the phenomena of bending and damage of large and small blades and supports of the classifier are caused, equipment accidents of 'trousers falling off' of the supports of the classifier and the supports are generated, a large number of steel balls enter the sand returning groove, enter the ball mill combined feeder along with sand returning, the combined feeder body is damaged, and the transmission gear of the ball mill is toothed due to overload and equipment accidents such as main bearing seat breaking and the like are caused in severe cases. Meanwhile, the maintenance labor intensity of the ore discharge chute is high, the material consumption is high, the maintenance time is long, and the like, so that the ore dressing production cost is greatly increased.

Disclosure of Invention

The utility model aims to provide the ball mill ore discharging device with reinforced structure and good use effect. Avoiding the phenomena of ore pulp running, overflowing, dripping and leaking, avoiding the occurrence of equipment damage accidents caused by that a large number of steel balls enter the tank body of the classifier after the large and small grid plates are damaged.

The technical scheme of the utility model is as follows: the ball mill ore discharging device is characterized by comprising a box body, wherein a bell mouth of a ball mill ore discharging bushing penetrates through a side panel of the box body and is inserted into the box body, the front end of the bell mouth of the ball mill ore discharging bushing is connected with an ore discharging stranding cage, and a U-shaped waste belt is fixed between a U-shaped mouth of the side panel and the bell mouth of the ball mill ore discharging bushing; an iron receiving grate welded by steel bars is arranged below an outlet of the ore discharge stranding cage in the box body, a certain gradient is arranged on the surface of the iron receiving grate, and an iron gate is arranged at an ore discharge opening of the iron receiving grate.

In the above scheme, the method further comprises:

a mineral discharging chute is arranged between the box body and the classifier, the gradient of the mineral discharging chute is 1:10, and a waste lining plate is arranged in the mineral discharging chute.

The utility model has the advantages that:

1. the device can be used for connection between the ball mill and the classifier, is suitable for being applied to ore discharging sliders of ore pulp with the particle size of (0.2-20) mm, and has the effects of cleaning and protecting environment and reducing pollution of the ore pulp to the surrounding environment in the ore dressing process.

2. The manufactured 'ball-throwing' emergency facility iron receiving grate can effectively prevent steel balls from entering the chute of the classifier, and can not cause larger equipment accidents.

3. The waste lining plates are installed and paved in the chute, so that the chute parent body is not worn, the occurrence of process accidents caused by the abrasion of the ore discharging chute is reduced, the maintenance amount of maintenance workers is reduced, and the processing cost of the ore dressing process is reduced. A waste belt is additionally arranged at the ore discharge end of the ball mill and is tightly stuck to the horn mouth of the ore discharge bushing, so that the splashing and backflow of ore pulp are prevented.

4. The structure is reasonable and compact, and the installation is convenient; the waste lining plates and the waste belts are adopted, so that the cost is saved, extra power is not needed, the cost of protective materials is saved, and the technical effect of facilitating ore discharge is achieved.

Embodiments of the present utility model will be described in further detail below with reference to the accompanying drawings.

Drawings

Fig. 1 is a schematic diagram of the structure of the present utility model.

Fig. 2 is a right-hand structural schematic diagram of fig. 1.

FIG. 3 is a schematic view of the structure of a scrap belt.

Detailed Description

Referring to fig. 1-3, the part names are as follows: the main box body 1, the side panels 2, the threaded holes 3, the waste belts 4, the waste belt threaded holes 5, the iron receiving grate 6, the small iron gate 7, the ore discharging chute 8, the waste lining plate 9, the bolts 10, the ore discharging bushing bell mouth 11, the ore discharging stranding cage 12 and the ball mill 13.

Referring to fig. 1 to 3, the ball mill ore discharging apparatus includes a housing 1, and a cover plate is provided on the housing 1. The ball mill ore discharge bush bell mouth 11 passes box side board 2 and inserts in box 1, and ore discharge hank cage 12 is connected to ball mill ore discharge bush bell mouth 11 front end, is fixed with U-shaped old and useless belt 4 between side board U-shaped mouth 14 and the ball mill ore discharge bush bell mouth 11, is close to the ball mill ore discharge end, cuts the arc with old and useless belt, pastes solidly with ore discharge bush bell mouth 11 department, prevents that the ore pulp from splashing and flowing backwards. An iron receiving grate 6 welded by steel bars is arranged below an outlet of the application ore discharging winch 12 in the box body 1, a certain gradient is arranged on the surface of the iron receiving grate 6, and an iron gate 7 is arranged at an ore discharging port of the iron receiving grate 6. The iron grate 6 is welded at the ore discharging end of the ball mill, and is used for emergency facilities when the broken balls are received and the ore discharging lining plate is broken, so that the maintenance amount of the connecting device of the box ore discharging chute 8 is ensured to be small, the labor intensity of workers is reduced, the material output is reduced, the accidents of the ball mill and the classifier are reduced, and the device is simple and convenient and the cost is saved. A mineral discharging chute 8 is arranged between the box body 1 and the classifier, one end of the mineral discharging chute 8 is connected with a mineral discharging port of the box body 1, and the other end is connected with the classifier. The gradient of the ore discharging chute 8 is 1:10, and a waste lining plate 9 is arranged in the ore discharging chute 8 to prevent ore pulp from wearing the parent body of the connecting device.

When the connecting device of the ball mill and the classifier is manufactured, a steel plate with the thickness of 10-12mm is selected as the material Q235. Firstly, selecting steel plates with the same thickness, then determining the length and the height of a main box body 1 of a connecting device according to the size of a bell mouth 11 of a lining sleeve at the ore discharge end of a ball mill, and then determining the overall size of the lengths of the main box body 1 and an ore discharge chute 8 and the gradient of the ore discharge chute 8 according to the distance between the ball mill and a classifier. For example, the HQG 2700X 3600 ball mill has a maximum size of a discharge bushing bell mouth 11 of 1100mm, a length of a main box body 1 of 1700mm, a height of 1700mm, and a length of a discharge cage of the HQG 2700X 3600 ball mill of 1000mm, and a length of the main box body 1 of 1500mm. During discharging, when the side plate of the main box body 1 is close to the ore discharging end of the ball mill, the side plate is U-shaped, the width of the U-shape is 900mm, the height dimension of the bottom surface of the U-shape is 500mm, the purpose is to enable the ore discharging bushing bell mouth 11 to extend into the main box body 1, the distance between the U-shaped arc mouth and the ore discharging bushing bell mouth 11 is ensured to be 15-20mm, and contact friction between the U-shaped arc mouth and the ore discharging bell mouth is avoided. Eight holes are drilled at equal intervals and uniformly distributed from the U-shaped arc opening, the size of each hole is set to 18mm, according to the size of the U-shaped side panel 2, the U-shaped size of the waste belt is used, the U-shaped arc opening of the belt is tightly attached to the ore discharging bushing bell mouth 11, according to the size of the drilled hole on the U-shaped side panel 2, the U-shaped belt is fixed on the side panel 2 by using M16 bolts, and the purpose of the method is to prevent environmental pollution caused by ore pulp injection and prevent metal loss. After the main box body 1 is welded, welding 20mm steel bars below the outlet of the ore discharging and grinding cage 12 to manufacture a ball-receiving iron grate 6 with the length of 1700mm multiplied by the width of 600mm and the steel bar spacing of 30mm, wherein the length of the iron grate 6 is 1480mm, and the height of the iron grate 6 is 500mm, so that steel plate groove bodies are formed on two sides of the iron grate, and large equipment accidents caused during ball-spitting are prevented. The ball-throwing machine is welded in the main box body 1 according to a certain gradient, so that the ball-throwing machine can be conveniently discharged along with the gradient in a rolling way, an iron gate 7 is arranged at an ore discharge port of the iron-receiving grate 6, ore blocks and small balls are screened out by the iron-receiving grate 6 and discharged through the small iron gate 7, the accumulation is conveniently observed daily, the accumulation is required to be cleaned in time, the large technological accident is prevented from being caused when the ball is thrown, and the main box body 1 is manufactured. The main box body 1 is connected with a classifier, and is formed by welding a ore discharging chute 8 made of steel plates. Under the general condition, the gradient of 1200mm long by 600mm wide by 500mm high is 1:10, and the waste lining plate 9 fallen down by the ball mill is arranged in the tank body of the ore discharge chute 8, so that the erosion of ore pulp to the parent metal of the ore discharge chute 8 can be prevented, and the metal loss caused by ore pulp running, overflowing, dripping and leaking can be prevented. The method is simple in operation, safe and reliable, saves cost and reduces the occurrence of process accidents.

Working principle: the ore pulp is continuously produced by a ball mill 13, and flows out through a discharge bushing bell mouth 11 and a discharge stranding cage 12. If the steel balls and ore blocks come out, the steel balls and ore blocks can fall onto the iron receiving grate 6 through the outlet of the ore discharging stranding cage 12, and the ore blocks and the small balls are screened out by the iron receiving grate 6 and then discharged through the small iron gate 7. The ore pulp enters the main ore discharging box body 1 of the ball mill, and the side plate 2 close to the ore discharging end is U-shaped, the waste belt 4 with the same U-shaped size is fixed through the M16 bolt 10, and the U-shaped arc opening of the waste belt 4 is tightly attached to the horn mouth 11 of the ore discharging bushing, so that the sealing effect is achieved, and the ore pulp cannot run, overflow, drip and leak. The ore pulp enters the classifier through the main box body 1 and the ore discharge chute 8, and the waste lining plates 9 are arranged at the inner bottom of the ore discharge chute 8, so that the ore pulp has extremely strong wear-resisting effect, the ore discharge chute 8 is protected from being worn, the ore pulp is continuously fed in and discharged out, and the continuity of production is realized.

Claims (2)

1. The ball mill ore discharging device is characterized by comprising a box body (1), wherein a ball mill ore discharging bushing bell mouth (11) penetrates through a side plate (2) of the box body and is inserted into the box body (1), the front end of the ball mill ore discharging bushing bell mouth (11) is connected with an ore discharging stranding cage (12), and a U-shaped waste belt (4) is fixed between a side plate U-shaped mouth (14) and the ball mill ore discharging bushing bell mouth (11); an iron receiving grate (6) welded by steel bars is arranged below an outlet of an application ore discharging stranding cage (12) in the box body (1), a certain gradient is arranged on the surface of the iron receiving grate (6), and an iron gate (7) is arranged at an ore discharging opening of the iron receiving grate (6).

2. A ball mill ore discharge apparatus according to claim 1, characterized in that an ore discharge chute (8) is provided between the housing (1) and the classifier; the gradient of the ore discharging chute (8) is 1:10, and a waste lining plate (9) is arranged in the ore discharging chute (8).

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