Rough crushing device for limestone mine

Abstract

The utility model discloses a limestone mine coarse crushing device, the limestone mine coarse crushing device comprises a stock bin (1), a first screening machine (2), a crusher (3) and a screening machine (4), the stock bin (1) provides ore for the first screening machine (2), a first outlet (21) of the first screening machine (2) is communicated with the crusher (3), and a second outlet (22) of the first screening machine (2) is communicated with the screening machine (4). A second outlet (22) of the first screening machine (2) is communicated with the screening machine (4), and an outlet of the crusher (3) is connected to the aggregate line (5); the screening machine (4) screens the ore entering the screening machine (4), coarse ore obtained through screening is conveyed to the aggregate line (5), and fine ore obtained through screening enters the clinker line (6). The limestone mine coarse crushing device can screen ores before the ores are put into production, so that different production departments can obtain respective suitable ores.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of ore screening, in particular to a limestone mine coarse breaking device. BACKGROUND

[0002] Mine blasting is a common technical means in the mining process, mainly used for breaking rocks or ore bodies. Mine blasting usually uses explosives to generate explosive force to break ore or rock mass to obtain usable ore blocks or debris.

[0003] Cement plants do not have requirements for the particle size of the ore obtained by blasting when producing clinker, so there is no need to screen the particle size of the blasted ore. However, as the market demand for aggregates increases, the cement plant will usually process the larger particles in the blasted ore into aggregates, and the smaller particles will be transported to the clinker production line to be processed into cement.

[0004] Currently, the blasted ore is transported to the factory by a conveyor car and is divided into two parts, one part enters the clinker line, and the other part enters the aggregate line. However, aggregate processing has strict requirements on the particle size of the ore, and the debris or mud in the blasted ore cannot be used as raw material for aggregate processing. Therefore, the ore transported to the aggregate line needs to be screened by particle size, and the ore with unqualified particle size will be sent to the clinker line. The clinker line needs ore with small particle size, and the ore with larger particle size needs to be crushed to obtain ore with smaller particle size. Since the blasted ore cannot be screened in advance, the clinker line needs to crush a large amount of coarse ore, which increases the workload of the clinker line in processing coarse ore. Similarly, the fine ore screened by the aggregate line also needs to be transported to the clinker line, which is also a waste of time. SUMMARY

[0005] The utility model aims at providing a limestone mine coarse breaking device, which can screen the ore before it is put into production, so that different production departments can obtain suitable ore.

[0006] To achieve the above-mentioned purpose, the utility model provides a limestone mine coarse breaking device, which comprises a stock bin, a first screening machine, a crusher and a screening machine. The stock bin provides ore to the first screening machine. The first outlet of the first screening machine is connected to the crusher, and the second outlet of the first screening machine is connected to the screening machine. The outlet of the crusher is connected to the aggregate line.

[0007] The screening machine screens the ore entering it, and the coarse ore obtained by screening is transported to the aggregate line, and the fine ore obtained by screening enters the clinker line.

[0008] Preferably, the first screening machine is arranged as a roller screening machine, the roller screening machine comprising a plurality of rollers arranged side by side, a spacing being arranged between any two adjacent rollers, the spacing between any two adjacent rollers being equal.

[0009] Preferably, a plurality of roller screening machines are arranged, the plurality of roller screening machines being arranged in sequence along the conveying direction, the first and last roller screening machines of adjacent two roller screening machines being connected in sequence.

[0010] Preferably, the plurality of roller screening machines are arranged in sequence along the conveying direction in terms of height.

[0011] Preferably, the screening machine is arranged as a closed structure, the top of the screening machine being provided with an outlet, the outlet being connected in communication with the bag-type dust collector.

[0012] Preferably, the ash outlet of the bag-type dust collector is connected to the clinker line.

[0013] Preferably, a plate conveyor is further arranged between the stock bin and the first screening machine, a third outlet of the plate conveyor being connected to the first screening machine, and a fourth outlet of the plate conveyor being connected to the screening machine.

[0014] Preferably, a spray head is arranged in the stock bin, the spray head spraying water into the stock bin.

[0015] Preferably, a plurality of spray heads are arranged along the inner wall of the stock bin.

[0016] According to the above technical solution, in the utility model, the ore transported by the ore car is first poured into the stock bin, the bottom of the stock bin is provided with a discharge port, the ore falls from the discharge port and enters the first screening machine, the ore is preliminarily screened on the first screening machine, the ore with a smaller particle size is collected at the second outlet and then conveyed to the screening machine by the conveyor, and the ore with a larger particle size is collected at the first outlet and then enters the crusher, the ore with a large size is crushed in the crusher and conveyed to the aggregate line by the fifth outlet of the crusher.

[0017] The ore entering the screening machine is screened in the screening machine, the ore with a larger particle size is conveyed to the aggregate line after screening, and the small-particle ore screened by the screening machine is conveyed to the clinker line.

[0018] Therefore, by using the limestone mine coarse crushing device, the ore can be screened according to its size, the ore with a smaller particle size is selected and sent to the clinker line, and the ore with a larger particle size is directly sent to the aggregate line.

[0019] In the process of screening the ore size by using the limestone mine coarse crushing device, the large-size ore can be crushed, so that the large-size ore is crushed into small-size ore and is sent to the aggregate line for production, so that the limestone mine coarse crushing device can not only complete the screening work of the ore, but also provide the aggregate line with the ore raw material with suitable size.

[0020] Other features and advantages of the present application will be described in detail in the following specific embodiments. BRIEF DESCRIPTION OF DRAWINGS

[0021] The accompanying drawings are included to provide a further understanding of the present application, and constitute a part of the specification, and are used together with the following detailed description to explain the present application, but do not constitute a limitation on the present application. In the drawings:

[0022] Figure 1 is a schematic view of a limestone mine coarse crushing device;

[0023] Figure 2 is a schematic view of a roller screening machine.

[0024] BRIEF DESCRIPTION OF DRAWINGS

[0025] 1 stock bin 11 discharge port

[0026] 2 first screening machine 21 first outlet

[0027] 3 crusher 22 second outlet

[0028] 4 screening machine 5 aggregate line

[0029] 6 clinker line 7 conveyor

[0030] 31 fifth outlet 23 roller

[0031] 8 plate conveyor 81 third outlet

[0032] 82 fourth outlet 83 baffle

[0033] 84 conveying plate 9 bag-type dust collector DETAILED DESCRIPTION

[0034] The specific embodiments of the present application will be described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present application, and are not used to limit the present application.

[0035] In the present application, unless otherwise stated, the orientation words contained in the terms such as "side by side, adjacent, in turn, top" only represent the orientation of the term in the conventional use state, or the common name understood by those skilled in the art, and should not be regarded as a limitation on the term.

[0036] Referring to Figure 1 A limestone mine coarse crushing device, which comprises a stock bin 1, a first screening machine 2, a crusher 3 and a screening machine 4, the stock bin 1 provides ores to the first screening machine 2, a first outlet 21 of the first screening machine 2 is communicated with the crusher 3, a second outlet 22 of the first screening machine 2 is communicated with the screening machine 4, and an outlet of the crusher 3 is connected to an aggregate line 5.

[0037] The screening machine 4 screens the ores entering therein, the coarse ores obtained by screening are transported to the aggregate line 5, and the fine ores obtained by screening enter a clinker line 6.

[0038] Through the implementation of the above technical scheme, the ores transported by the mine car are first poured into the stock bin 1, the bottom of the stock bin 1 is provided with a discharge port 11, the ores fall from the discharge port 11 and enter the first screening machine 2, the ores are preliminarily screened on the first screening machine 2, the ores with smaller particle size are collected at the second outlet 22 and then transported to the screening machine 4 by the conveyor 7, and the ores with larger particle size are collected at the first outlet 21 and then enter the crusher 3, the large-size ores are crushed in the crusher 3 and transported to the aggregate line 5 by the fifth outlet 31 of the crusher 3.

[0039] The ores entering the screening machine 4 are screened therein, the ores with larger particle size are transported to the aggregate line 5 after screening, and the small-particle ores screened by the screening machine 4 are transported to the clinker line 6.

[0040] Therefore, by using the limestone mine coarse crushing device, the ores can be screened according to their sizes, the ores with smaller particle size are selected and sent to the clinker line 6, and the ores with larger particle size are directly sent to the aggregate line 5.

[0041] In the process of screening the sizes of the ores by using the limestone mine coarse crushing device, the large-size ores can also be crushed, so that the large-size ores are crushed into smaller-size ores and sent to the aggregate line 5 for production and use, therefore, the limestone mine coarse crushing device can not only complete the screening work of the ores, but also provide the aggregate line 5 with ore raw materials with suitable sizes.

[0042] In this embodiment, preferably, the first screening machine 2 is arranged as a roller screening machine, the roller screening machine comprises a plurality of rollers 23 arranged side by side, a spacing is arranged between any two adjacent rollers 23.

[0043] The roller 23 of the roller screen rotates to realize the transfer of the ore located thereon. In the process of the transfer of the ore, the ore with a small size can fall through the gap between the adjacent two rollers 23, and thus, the preliminary screening of the ore can be realized in the process of the transfer of the ore by the roller screen. The ore with a small size falls into the lower part of the roller screen and is output to the screening machine 4 through the second outlet 22, and the ore with a large size is always located above the roller screen and is finally conveyed to the crusher 3 through the first outlet 21.

[0044] In this embodiment, preferably, a plurality of roller screens are arranged, and the plurality of roller screens are sequentially arranged along the conveying direction with the head and tail of the adjacent two roller screens being connected.

[0045] The first screening machine 2 is arranged in the mode that the plurality of roller screens are sequentially connected. On the one hand, the load on the single roller screen can be reduced, and the cost of the driving device can be reduced. On the other hand, in the process of the material transfer of the two roller screens, the ore will impact on the conveying surface and cause the vibration of the roller screen, which is beneficial to improve the efficiency of the roller screen in screening the ore.

[0046] In this embodiment, preferably, the plurality of roller screens are sequentially arranged along the conveying direction with the heights of the roller screens being sequentially reduced.

[0047] The plurality of roller screens are sequentially arranged along the conveying direction with the heights of the roller screens being sequentially reduced. In the process of the conveying of the ore, when the ore is conveyed from the former roller screen to the latter roller screen, the potential energy of the ore will be converted into kinetic energy due to the reduction of the height of the latter roller screen, so that the ore has an initial speed when falling into the latter roller screen. The initial speed can impact on the latter roller screen, and the latter roller screen will vibrate under the impact load, so that the latter roller screen can screen the ore more effectively.

[0048] The plurality of roller screens can also increase the time of the ore staying on the roller screen, and the screening efficiency can be improved to a certain extent by increasing the screening time, which is beneficial to screen all the small-size ore from the ore.

[0049] Preferably, three roller screens are arranged. The reliable screening of the small-size ore can be realized through the continuous screening of the three roller screens and the two falling impacts in the process, and the increase of the screening efficiency of the ore by the roller screen is not too much, and thus, the arrangement of the three roller screens can realize the optimization of the screening efficiency of the ore on the basis of the control of the cost of the device.

[0050] In this embodiment, preferably, the screening machine 4 is arranged to be closed, and the top of the screening machine 4 is provided with an outlet which is connected with the bag-type dust collector 9.

[0051] The screening machine realizes screening of the ore by vibration and other methods. In the screening process, dust is inevitably generated in the screening machine. In order to avoid the dust from overflowing into the surrounding environment, the screening machine can be provided as a closed type, and an outlet is arranged at the top of the screening machine. The fan draws the dust in the screening machine out through the air outlet and transports it to the bag-type dust collector 9. The dust collected by the bag-type dust collector 9 is transported to the clinker line 6 as raw material of the clinker line 6.

[0052] Therefore, by arranging the bag-type dust collector 9 at the outlet of the screening machine, the surrounding environment can be effectively protected, and the ore can be fully utilized to avoid waste of the ore.

[0053] In this embodiment, preferably, the dust outlet of the bag-type dust collector 9 is connected to the clinker line 6.

[0054] In this embodiment, preferably, a plate conveyor 8 is further arranged between the stock bin 1 and the first screening machine 2. A third outlet 81 of the plate conveyor 8 is connected to the first screening machine 2, and a fourth outlet 82 of the plate conveyor 8 is connected to the screening machine 4.

[0055] In order to avoid the accumulation of ore on the roller screen, a plate conveyor 8 is further arranged between the roller screen and the stock bin 1. The ore in the stock bin 1 is first discharged onto the conveying plate 84 of the plate conveyor 8. A gap is arranged between adjacent two conveying plates 84. The ore with small size falls through the gap and is finally transported to the fourth outlet and the screening machine 4. The ore with large size is continuously conveyed to the third outlet 81 at the end and falls into the first screening machine 2 below.

[0056] Preferably, a baffle 83 is arranged on the plate conveyor 8. An included angle is arranged between the baffle 83 and the conveying plate 84. Through the included angle, a storage space is formed between the baffle 83 and the conveying plate 84. The plate conveyor 8 is arranged obliquely. After the ore falls into the plate conveyor 8, the ore is stored in the storage space and climbs up with the plate conveyor 8, and the ore is uniformly dispersed in the process of climbing.

[0057] Specifically, the stock bin 1 discharges ore to the plate conveyor 8 through the discharge port 11. The ore is accumulated on the plate conveyor 8. When the height of the accumulated ore is greater than the height of the baffle 83, the top ore slides downward until the ore falls into the storage space blocked by the baffle 83. Through the above process, the purpose of uniformization of the ore by the plate conveyor 8 is achieved.

[0058] The homogenized ore reaches the third outlet, the baffle 83 is turned over at the end of the plate conveyor 8, and the ore in the corresponding storage space falls into the roller screen below, and the impact of the ore falling into the roller screen causes the vibration of the roller screen, which is beneficial to the screening of the ore by the roller screen.

[0059] Therefore, the plate conveyor 8 is arranged to preliminarily screen the ore, and the ore is conveyed through the plate conveyor 8, so that the incoming material of the roller screen is more uniform, and the impact force can be applied to the roller screen during the conveying of the ore from the plate conveyor 8 to the roller screen, which is beneficial to improving the screening effect of the roller screen.

[0060] In this embodiment, preferably, a spray head is arranged in the bin 1, and the spray head sprays water into the bin 1.

[0061] In order to avoid dust around the plate conveyor 8, a spray head is arranged in the bin 1, and the spray head sprays water into the bin 1, so that the ore with very small particle size and easy to raise dust is condensed under the action of water. Therefore, the spray head is arranged in the bin 1 to spray water to the ore, and when the bin 1 discharges to the plate conveyor 8, the dust raising can be avoided.

[0062] In this embodiment, preferably, a plurality of spray heads are arranged along the inner wall of the bin 1.

[0063] The plurality of spray heads are arranged along the inner wall of the bin 1, so that the plurality of spray heads can cover the cross section of the bin 1 to achieve better dust raising prevention effect.

[0064] The spray head continuously sprays water into the bin 1, and when the ore is discharged into the bin 1 by the conveying vehicle, the plurality of spray heads spray water to the newly entered ore to achieve the dust removal effect in the bin 1 under the continuous spraying of the spray head.

[0065] The ore sprayed with water falls into the plate conveyor 8 below, which can also maximize the prevention of dust raising.

[0066] The preferred embodiments of the present application are described in detail above with reference to the drawings, but the present application is not limited to the specific details in the above embodiments, and various simple modifications can be made to the technical solutions of the present application within the technical concept of the present application, and these simple modifications all belong to the protection scope of the present application.

[0067] In addition, it should be noted that the various specific technical features described in the above specific embodiments can be combined in any appropriate manner without contradiction, and in order to avoid unnecessary repetition, the present application will not further describe various possible combinations.

[0068] Furthermore, various different embodiments of the present application can be combined with each other as long as they do not violate the spirit of the present application, and should be considered as disclosed in the present application.

Claims

1. A limestone mine coarse crushing device, characterized in that, The limestone mine coarse crushing device comprises a stock bin (1), a first screening machine (2), a crusher (3) and a screening machine (4), the stock bin (1) provides ores to the first screening machine (2), a first outlet (21) of the first screening machine (2) is communicated with the crusher (3), a second outlet (22) of the first screening machine (2) is communicated with the screening machine (4), and an outlet of the crusher (3) is connected to an aggregate line (5); The screening machine (4) screens the ores entering the screening machine (4), and the coarse ores obtained through screening are conveyed to the aggregate line (5), and the fine ores obtained through screening enter a clinker line (6); The first screening machine (2) is arranged as a roller screening machine, the roller screening machine comprises a plurality of rollers (23) arranged side by side, a spacing is arranged between adjacent two rollers (23), and the spacing between any two adjacent rollers is equal.

2. The limestone mine coarse crushing device according to claim 1, characterized in that, A plurality of roller screening machines are arranged, and the adjacent two roller screening machines are connected in a head-to-tail mode.

3. The limestone mine coarse crushing device according to claim 2, characterized in that, The plurality of roller screening machines are arranged in a height-decreasing mode along the conveying direction.

4. The limestone mine coarse crushing device according to claim 1, characterized in that, The screening machine (4) is arranged as a closed type, an outlet is arranged at the top of the screening machine (4), and the outlet is communicated with a bag-type dust collector.

5. The limestone mine coarse crushing device according to claim 4, characterized in that, An ash discharge port of the bag-type dust collector is connected to the clinker line (6).

6. The limestone mine coarse crushing device according to claim 1, characterized in that, A plate conveyor (8) is further arranged between the stock bin (1) and the first screening machine (2), a third outlet (81) of the plate conveyor (8) is connected to the first screening machine (2), and a fourth outlet (82) of the plate conveyor (8) is connected to the screening machine (4).

7. The limestone mine coarse crushing device according to claim 6, characterized in that, A spray head is arranged in the stock bin (1), and the spray head sprays water into the stock bin (1).

8. The limestone mine coarse crushing device according to claim 7, characterized in that, A plurality of spray heads are arranged along the inner wall of the stock bin (1).

Images