Gravel discharging grid plate of semi-autogenous mill

Abstract

The utility model discloses a semi-autogenous mill gravel discharging grid plate which comprises a gravel discharging hopper, an interception plate and a plurality of flow guide grid plates fixed on the inner side of the gravel discharging hopper, the flow guide grid plates are evenly distributed on the inner side of the gravel discharging hopper in the circumferential direction, gravel discharging sliding ways are arranged between the flow guide grid plates, and backflow ways are arranged between every two adjacent flow guide grid plates. The interception plate is fixedly installed at one end of the gravel discharging hopper, discharging holes communicated with the gravel discharging sliding ways are formed in the surface of the interception plate, the flow guide grid plate comprises inclined guide plates and splitter plates, and the splitter plates are located between the adjacent inclined guide plates. According to the semi-autogenous mill, the flow guide grating and the gravel discharging sliding way are arranged in the gravel discharging hopper, hard rock is effectively guided to be discharged smoothly, ore accumulation is reduced, the discharging efficiency of the semi-autogenous mill is improved, and large-size ore slides along the gravel discharging sliding way to enter the ball mill to be ground again through the flow dividing groove and the backflow way. And small-size ores are discharged through the discharge hole when sliding along the gravel discharge slide way, so that the utilization rate of the hard rock crusher is effectively improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a semi -autogenous mill technical field, concretely is a kind of semi -autogenous mill gravel grid. BACKGROUND

[0002] At present, the ore processing industry generally adopts "SABC" process, that is, first, the ore is preliminarily crushed by a gyratory crusher, then further crushed and ground by a semi-autogenous mill, and then the ore smaller than 12 mm is sent to a ball mill for fine grinding, while the hard stone larger than 12 mm is sent to a hard stone crusher for secondary crushing, finally forming a closed-circuit system. However, with the deepening of production and the increase of daily processing capacity, especially in the case of increased ore hardness, the full-load operation of the semi-autogenous mill has become the norm, while the hard stone crusher is idle due to insufficient hard stone discharge, resulting in unbalanced equipment operation and inability to fully exert its crushing capacity. The design of the traditional semi-autogenous mill gravel grid causes the hard stone to be discharged in time and effectively, making the load of the semi-autogenous mill too large, which seriously affects the production efficiency and increases the operating cost of the enterprise.

[0003] The current traditional gravel grid design has the following problems: first, the discharge hole size of the traditional grid is small and the distribution is unreasonable, which causes the hard stone of larger particle size to be unable to be discharged smoothly, but only to be accumulated in the semi-autogenous mill for repeated grinding, causing the equipment to be severely worn and the efficiency to be reduced. At the same time, due to the inability of the discharge hole to effectively separate different particle sizes of ore, the working load of the ball mill and the hard stone crusher cannot be balanced, further limiting the overall production capacity of the production line. In addition, the traditional gravel grid is prone to blockage during use, especially during the processing of high-hardness ore, which is more likely to cause equipment downtime for maintenance, increasing maintenance costs and production downtime.

[0004] In view of the defects of the above-mentioned traditional technology, the utility model optimizes the design of the semi-autogenous mill gravel grid, adopts a combination structure of multiple guide grids and gravel slides, and enlarges the size of the discharge hole to effectively improve the discharge efficiency of the ore. Through reasonable separation and retention design, larger particle size ore can enter the ball mill for regrinding through the backflow channel, while smaller particle size ore is quickly discharged to the hard stone crusher for secondary crushing, balancing the working load of each equipment, thereby significantly improving the overall production efficiency and prolonging the service life of the equipment. UTILITY MODEL CONTENTS

[0005] The utility model relates to a semi -autogenous mill gravel grid, aims at solving the problems of low discharge efficiency of semi -autogenous mill and insufficient utilization rate of hard stone crusher in prior art. The utility model improves the discharge efficiency of ore by improving the discharge structure and optimizing the design of discharge hole, prolongs the service life of equipment and improves the overall production efficiency.

[0006] The utility model discloses a gravel discharge device, which comprises a gravel discharge hopper, a cut-off plate and a plurality of guide grids fixed to the inner side of the gravel discharge hopper.

[0007] In the utility model, the gravel discharge hopper is in a conical cylindrical shape, and the gravel discharge chute, the backflow channel and the guide grids on the inner side are arranged in a slanting manner. The conical structure design makes the discharge of the ore more smooth, reduces the accumulation of the ore in the pipeline, improves the discharge efficiency of the ore, reduces the load of the equipment and improves the operation rate of the equipment.

[0008] In the utility model, the gravel discharge chute is in a conical flow channel structure, and the distance between the ends opposite to the discharge holes gradually decreases. The inclined guide plates and the shunt plates are linearly arranged along the surface direction of the gravel discharge chute. This structure design helps to control the flow path of the ore, makes the ore quickly slide out under the action of gravity during the flow process, reduces the accumulation of the ore and further improves the discharge efficiency.

[0009] In the utility model, the other end of the shunt plate is communicated with the backflow channel, and the cross section of the shunt plate is in a conical structure, which gradually decreases along the direction from the backflow channel to the gravel discharge chute. Through the design of the gradually decreasing cross section, the ore can be quickly discharged after entering the backflow channel, preventing the blockage, improving the ore shunt efficiency and ensuring the continuous operation of the equipment.

[0010] In the utility model, the cut-off plate is used for plugging the end of the backflow channel, and the discharge hole is located at the end of the gravel discharge chute. Through the plugging of the end of the backflow channel, the large-sized ore can be smoothly discharged through the discharge hole, and the small-sized ore can be backflowed into the ball mill through the backflow channel for regrinding, further improving the grinding efficiency.

[0011] In the utility model, the surfaces of the gravel discharge chute and the backflow channel are provided with a self-lubricating coating to reduce the impact friction of the ore on the grid plate and prolong the service life. The self-lubricating coating can effectively reduce the friction of the ore during the sliding process, reduce the wear, prolong the service life of the grid plate and reduce the maintenance cost.

[0012] The utility model discloses through the mutual cooperation of above -mentioned parts, not only has improved the discharge efficiency of semi -autogenous mill, still through the reasonable shunt and the design of retaining, the load of ball mill and hard stone breaker is more balanced, the production capacity of overall production line is improved significantly.

[0013] The utility model discloses the beneficial effects that have been obtained are:

[0014] 1. In the utility model, through setting up the flow guide lattice and the gravel chute in the gravel discharge hopper, the hard stone is effectively guided to discharge smoothly, the ore accumulation is reduced, the discharge efficiency of semi -autogenous mill is improved, and the large particle size ore is slid along the gravel chute and enters the ball mill to regrind through the shunt groove and the backflow channel, the small particle size ore is discharged through the discharge hole in sliding along the gravel chute, and the utilization rate of hard stone breaker is effectively improved.

[0015] 2. In the utility model, the size and distribution of the discharge hole are optimized, the retaining plate can retain the hard stone of large particle size, and the oblique guide plate and the shunt plate of multiple flow guide lattices realize the efficient shunt and discharge of hard stone, reduce the blocking condition, and prolong the service life of equipment. DRAWINGS

[0016] Fig. 1 It is the overall structure schematic view of an embodiment of the utility model;

[0017] Fig. 2 It is the gravel discharge hopper cross section structure schematic view of an embodiment of the utility model;

[0018] Fig. 3 It is the flow guide lattice structure schematic view of an embodiment of the utility model.

[0019] Reference signs:

[0020] 100, gravel discharge hopper;110, gravel chute;120, backflow channel;

[0021] 200, retaining plate;210, discharge hole;

[0022] 300, flow guide lattice;310, oblique guide plate;320, shunt plate;321, shunt groove. DETAILED DESCRIPTION

[0023] To make the purpose, technical scheme and advantage of the utility model more clear and explicit, the utility model is explained in further detail below by combining with specific embodiment and referring to the drawings. It should be explained that the embodiment of the utility model and the features in the embodiment can be combined mutually in the case of no conflict.

[0024] It is to be understood that the foregoing description is only exemplary of the application and intended to provide an overview for understanding the scope of the application.

[0025] The application will be described in more detail below with reference to the drawings. Figs. 1-3 The application provides a gravel discharging lattice plate of a semi-autogenous mill.

[0026] Embodiment one

[0027] The application provides a gravel discharging lattice plate of a semi-autogenous mill, which comprises a gravel discharging hopper 100, a retaining plate 200, a flow guide lattice plate 300, a gravel discharging chute 110 and a backflow channel 120. The components are organically combined to realize the diversion discharge of the ore and the improvement of the discharging efficiency.

[0028] In the embodiment, the flow guide lattice plate 300 is arranged on the inner side of the gravel discharging hopper 100 and is uniformly distributed in the circumferential direction. The flow guide lattice plate 300 is composed of a plurality of inclined guide plates 310 and diversion plates 320, and the diversion plates 320 are located between adjacent inclined guide plates 310. A diversion groove 321 is arranged between the adjacent inclined guide plates 310, and the diversion plates 320 are fixed between the inclined guide plates 310 through the diversion groove 321. The gravel discharging hopper 100 is a conical cylindrical structure, and the gravel discharging chute 110, the backflow channel 120 and the flow guide lattice plate 300 on the inner side thereof are arranged in a slanting direction, so as to ensure that the ore can smoothly slide during the discharging process.

[0029] In the embodiment, the retaining plate 200 is installed at one end of the gravel discharging hopper 100 and is in communication with the gravel discharging chute 110 through a discharging hole 210. The ore with a large particle size enters a ball mill for regrinding after sliding into the backflow channel 120 through the gravel discharging chute 110, and the ore with a small particle size is directly discharged through the discharging hole 210. In order to avoid the accumulation of the ore, the flow channel of the gravel discharging chute 110 is a conical structure, and the distance between the end opposite to the discharging hole 210 gradually decreases, so that the ore is accelerated to slide out under the action of gravity.

[0030] In addition, in order to reduce the friction and impact of the hard stone during the flow process, a self-lubricating coating is arranged on the surface of the gravel discharging chute 110 and the backflow channel 120, so as to effectively prolong the service life of the application. Meanwhile, the diversion plate 320 is a conical structure, and the cross section thereof gradually decreases in the direction from the backflow channel 120 to the gravel discharging chute 110, so as to ensure that the hard stone can smoothly slide out and further improve the discharging efficiency.

[0031] Effect: Through the above structural design, the gravel discharging efficiency of the semi-autogenous mill is effectively improved, the working load of the ball mill and the hard stone crusher is balanced, and the equipment operation rate is significantly improved.

[0032] Embodiment two

[0033] On the basis of embodiment one, the structural design of the interception plate 200, the flow guide grid plate 300 and the flow distribution plate 320 is further optimized to adapt to the processing conditions of high-hardness ores.

[0034] In this embodiment, the interception plate 200 is made of wear-resistant alloy material, and a reinforcing rib structure is added to its surface to further improve its strength and impact resistance. The discharge hole 210 adopts an asymmetric design, and the size and distribution of the discharge hole are optimized according to the particle size of the ore, so that the ore can be quickly discharged, while reducing the phenomenon of blockage.

[0035] In addition, the flow guide function of the backflow channel 120 is added in this embodiment, and more guide grooves are arranged on the surface of the backflow channel 120, so that the ore can be better guided during flow to prevent ore from being retained. The end of the flow distribution plate 320 is connected with the backflow channel 120, and by adjusting the inclination angle thereof, the ore distribution is more uniform, further improving the discharge efficiency.

[0036] In order to prolong the service life of the equipment, the self-lubricating coating of the gravel discharge chute 110 and the backflow channel 120 is improved in this embodiment, and an anti-wear additive is added to make the coating more durable under high-strength use conditions.

[0037] Implementation effect: this embodiment strengthens the structural strength of the interception plate 200 and the flow guide grid plate 300, improves the impact resistance of the grid plate; at the same time, through the optimization design of the discharge hole 210 and the backflow channel 120, the discharge efficiency is further improved, and the downtime of the equipment is significantly reduced.

[0038] Through the above two embodiments, the following technical effects are achieved:

[0039] The gravel hopper 100 cooperates with the flow guide grid plate 300 to realize the rapid distribution and discharge of the ore, effectively improving the discharge efficiency.

[0040] By optimizing the structural design of the gravel discharge chute 110, the backflow channel 120 and the discharge hole 210, ores of different particle sizes can be distributed as needed to ensure the load balance of the ball mill and the hard stone crusher.

[0041] The surface of the gravel discharge chute 110 and the backflow channel 120 is provided with a self-lubricating coating, which reduces the impact and wear of the ore on the equipment, significantly prolonging the service life of the equipment.

[0042] The interception plate 200 is made of wear-resistant material and combined with a reinforcing rib structure design to improve the impact resistance and reduce the downtime of the equipment caused by blockage.

[0043] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "a specific embodiment", and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily mean the same embodiment or example. Furthermore, the described specific features, structures, materials or characteristics can be combined in any one or more embodiments or examples in a suitable manner.

[0044] Although the embodiments of the present application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the claims and their equivalents.

Claims

1. A grate panel for a semi-autogenous mill, characterised in that, The application relates to a gravel discharging device, which comprises a gravel discharging hopper (100), a retaining plate (200) and flow guide grids (300) fixed to the inner side of the gravel discharging hopper (100). The gravel discharging hopper (100) is a conical cylinder, and the inner side gravel discharging slide (110), the backflow channel (120) and the flow guide grid (300) are arranged in a slanting direction.

2. A grizzly bar for a semi-autogenous mill according to claim 1, characterised in that, The gravel discharging slide (110) is a conical flow channel structure, and the distance between the end opposite to the discharge hole (210) gradually decreases.

3. A grizzly bar for a semi-autogenous mill according to claim 1, characterised in that, The other end of the shunt plate (320) is connected with the backflow channel (120), the cross section of the shunt plate (320) is a conical structure and gradually decreases along the direction from the backflow channel (120) to the gravel discharging slide (110).

4. A grizzly bar for a semi-autogenous mill according to claim 1, characterised in that, The retaining plate (200) is used for blocking the end of the backflow channel (120), and the discharge hole (210) is located at the end of the gravel discharging slide (110).

5. A grizzly bar for a semi-autogenous mill according to claim 1, wherein The surface of the gravel discharging slide (110) and the backflow channel (120) is provided with a self-lubricating coating, so as to reduce the impact friction of the stubborn stone on the grid plate and prolong the service life.

6. A grizzly bar for a semi-autogenous mill according to claim 1, characterised in that, ​

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