Underground gangue powder storing and conveying device

Abstract

The utility model belongs to the technical field of mining equipment, and particularly relates to the field of underground gangue filling systems for coal mines, in particular to an underground gangue powder storing and conveying device which comprises a horizontal combined gangue bin, an on-bin buried scraper arranged above the horizontal combined gangue bin and an under-bin belt conveyor arranged below the horizontal combined gangue bin. A powder discharging hopper is arranged at the machine head of the on-bin embedded scraper, and the lower end of the powder discharging hopper is close to the under-bin belt conveyor; the horizontal combined gangue bin comprises a head bin, a middle bin and a tail bin, and a flap gate which is hydraulically controlled to be opened and closed is mounted at the bottom of the bin. According to the utility model, the occupied space of the underground gangue filling system chamber can be effectively reduced, and the continuity of the filling system is ensured.

Description

Technical Field

[0001] The utility model belongs to the technical field of mining equipment, in particular to the field of coal mine underground gangue filling systems, and specifically relates to an underground gangue powder storage and conveying device. Background Art

[0002] At present, there are mainly three types of horizontal bins used in coal mines underground, namely shuttle cars, belt conveyor storage bins, and cloth-type horizontal bins. The shuttle car and the belt conveyor storage bin have the same principle, that is, the bottom conveyor rotates slowly to realize storage and discharging of materials. Their advantages are simple structure, and their disadvantages are less storage capacity per unit area, large bearing capacity of the conveyor, and long equipment layout distance; the cloth-type horizontal bin is composed of multiple unit bins, a feeding belt above the bin, and a discharging belt below the bin. The feeding belt above the bin is equipped with a discharging trolley. Its advantages are large storage capacity per unit area of the bin, and its disadvantages are large external dimensions and the need to construct a chamber with a large cross-section for installing equipment. For the coal mine gangue slurry filling system, according to the technological requirements, a large horizontal bin must be arranged underground, and it is required to occupy a small space and have a large storage capacity. In the situation where the existing horizontal bin equipment cannot meet the technical requirements, a horizontal bin suitable for storing gangue powder is specially developed. Content of the Utility Model

[0003] The purpose of the utility model is to provide an underground gangue powder storage and conveying device to solve the problems of small storage capacity of the underground horizontal bin, large external dimensions, and complex installation and construction existing in the prior art.

[0004] The technical solution of the utility model is as follows:

[0005] An underground gangue powder storage and conveying device includes a horizontal combined gangue bin, an upper-bunker scraper conveyor arranged above the horizontal combined gangue bin, and a lower-bunker belt conveyor below it. A powder discharging funnel is arranged at the head of the upper-bunker scraper conveyor, and the lower end of the powder discharging funnel is close to the lower-bunker belt conveyor;

[0006] The horizontal combined gangue bin includes a head bin, a middle bin, and a tail bin, and a flap gate controlled by hydraulic pressure for opening and closing is installed at the bin bottom.

[0007] Further, the head bin, the middle bin, and the tail bin are connected by high-strength stainless steel bolts.

[0008] Further, the length of the feeding port of the upper-bunker scraper conveyor is the same as the length of the horizontal combined gangue bin.

[0009] Further, a hydraulic cylinder is installed on the outer shell of the horizontal combined gangue bin, and the flap gate is connected to a gate hydraulic control system arranged on one side of the storage and conveying device through the hydraulic cylinder.

[0010] Furthermore, the belt conveyor under the silo is a variable-frequency belt conveyor, and a weighing scale is installed at the head position.

[0011] Furthermore, a level detector is installed in each bin of the horizontal combined gangue silo.

[0012] Furthermore, a pneumatic vibrator is installed in each bin of the horizontal combined gangue silo.

[0013] Furthermore, it also includes a centralized control system stored in the terminal for controlling the bucket conveyor above the silo, the belt conveyor under the silo, the flap gate, the weighing scale, the level detector, and the pneumatic vibrator.

[0014] The beneficial technical effects of the present utility model are as follows:

[0015] 1. The present utility model can effectively achieve the storage of gangue powder. It has a simple structure, a large storage capacity, is convenient for installation and maintenance, has a small overall dimension of the equipment, and a large storage capacity. The total assembly height of the equipment does not exceed 4.0 meters, the width does not exceed 2.4 meters, and the stock volume of a single bin ≥ 5.7m 3 , the cross-section of the chamber is consistent with that of the filling equipment, a maintenance distance is set, and the excavation work amount is small, saving the chamber space.

[0016] 2. The present utility model uses a bucket conveyor for feeding, which has the function of distributing materials, occupies a small space, has a good material distribution effect, and has little dust pollution; a combined bin, the bins are interconnected in the middle, has a large storage capacity and is convenient for feeding; the bins are connected by high-strength stainless steel bolts, which is convenient for disassembly, movement and installation of the equipment; a centralized control system, with few operators and low failure rate. Description of the Drawings

[0017] Figure 1 is the overall structural schematic diagram of the device of the present utility model;

[0018] Figure 2 is the structural schematic diagram of a single buffer bin;

[0019] Figure 3 is the schematic diagram of the opening and closing states of the buffer bin.

[0020] Reference numerals: 1 - horizontal combined gangue silo, 2 - bucket conveyor above the silo, 3 - belt conveyor under the silo, 4 - head bin, 5 - middle bin, 6 - tail bin, 7 - pneumatic vibrator, 8 - flap gate, 9 - hydraulic cylinder, 10 - powder discharge funnel, 11 - gate hydraulic control system. Detailed Embodiments

[0021] In order to make the objectives, technical solutions and advantages of the present utility model more clear and understandable, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0022] The present invention provides an underground gangue powder storage and conveying device. After a large amount of gangue powder is produced by a crusher, the gangue powder can be temporarily stored in an underground chamber in large quantities.

[0023] See the attached Figure 1 , the underground gangue powder storage and conveying device includes a horizontal combined gangue bin 1, an upper-bunker scraper conveyor 2 arranged above the horizontal combined gangue bin 1, and a lower-bunker belt conveyor 3 below it. A powder discharge funnel 10 is arranged at the head of the upper-bunker scraper conveyor 2, and the lower end of the powder discharge funnel 10 is close to the lower-bunker belt conveyor 3;

[0024] The horizontal combined gangue bin 1 includes a head bin 4, an intermediate bin 5 and a tail bin 6, and a flap gate 8 controlled by hydraulic pressure for opening and closing is installed at the bin bottom.

[0025] A hydraulic cylinder 9 is installed on the outer shell of the horizontal combined gangue bin 1, and the flap gate 8 is connected to a gate hydraulic control system 11 arranged on one side of the storage and conveying device through the hydraulic cylinder 9.

[0026] As a further implementation method, the lower-bunker belt conveyor 3 adopts a variable-frequency belt conveyor, a weighing scale is installed at the head position, a material level detector and a pneumatic vibrator 7 are installed in each gangue bin, and a centralized control system is installed and stored on a terminal machine for controlling the upper-bunker scraper conveyor, the lower-bunker belt conveyor, the flap gate, the weighing scale, the material level detector and the pneumatic vibrator. The foregoing components are all existing standard machinery and are connected to the centralized control system by wire or wireless means.

[0027] The overall operation process of this device is as follows: When the upper-bin scraper conveyor 2 is operating, the gangue powder enters the tail bin 6 through the scraper conveyor. During the operation, the gangue powder that is not discharged into the gangue bin in time enters the lower-bin belt conveyor 3 through the powder discharge funnel 10, preventing the accumulation of gangue powder at the head of the scraper conveyor and affecting the normal operation of the equipment. When the powder accumulation height exceeds the bottom surface of the upper-bin scraper conveyor 2, the bottom-chain scraper pushes the piled material to move horizontally, causing the material to accumulate towards the intermediate bin 5. When the level gauge detects that the tail bin 6 is full, the upper-bin scraper conveyor 2 stops feeding. When the combined horizontal gangue bin needs to discharge materials, first, the lower-bin belt conveyor 3 is started. Then, the gate hydraulic control system 11 controls the hydraulic cylinder 9 to open the first flap gate 8 at the front end of the bin. When the level gauge detects that the first bin is emptied, the second gate is opened, and at the same time, the first gate is closed, and so on until the bin is emptied. When there is caking or piled material in the bin, the pneumatic vibrator 7 is started to make the material slide down. The conveying capacity of the belt conveyor realizes the quantitative transportation of materials by controlling the size of the gate, the material control baffle, the feedback of the weighing scale, and the speed change of the belt conveyor.

[0028] The above is only the preferred embodiment of the present utility model, and is not used to limit the protection scope of the present utility model. Any equivalent structural changes made by using the description and drawings of the present utility model shall be included in the patent protection scope of the utility model.

Claims

1. An underground gangue powder storage and transportation device, characterized in that: The invention comprises a horizontal combined gangue bin (1), an upper-bin buried scraper (2) arranged above the horizontal combined gangue bin (1), and an under-bin belt conveyor (3) arranged below the bin, wherein a powder material discharge funnel (10) is arranged at the head of the upper-bin buried scraper (2), and the lower end of the powder material discharge funnel (10) is close to the under-bin belt conveyor (3); The horizontal combined waste rock bin (1) comprises a head bin (4), a middle bin (5) and a tail bin (6), and a flap gate (8) with hydraulically controlled opening and closing is installed at the bottom of the bin.

2. The underground gangue powder storage and transportation device according to claim 1 is characterized in that: The head bin (4), the middle bin (5) and the tail bin (6) are connected by high-strength stainless steel bolts.

3. The underground gangue powder storage and transportation device according to claim 1 is characterized in that: The length of the material drop opening of the scraper machine (2) buried in the bin is consistent with the length of the horizontal combined type gangue bin (1).

4. The underground gangue powder storage and transportation device according to claim 1 is characterized in that: A hydraulic cylinder (9) is installed on the outer shell of the horizontal combined gangue bin (1), and the flap gate (8) is connected to a gate hydraulic control system (11) arranged on one side of the storage and conveying device through the hydraulic cylinder (9).

5. The underground gangue powder storage and transportation device according to claim 4 is characterized in that: The under-bin belt conveyor (3) is a variable frequency belt conveyor, and a measuring scale is installed at the head position.

6. The underground gangue powder storage and transportation device according to claim 5, characterized in that: A material level detector is installed in each bin of the horizontal combined gangue bin (1).

7. The underground gangue powder storage and transportation device according to claim 6 is characterized in that: A pneumatic vibrator (7) is installed in each bin of the horizontal combined gangue bin (1).

8. The underground gangue powder storage and transportation device according to claim 7, characterized in that: It also includes a centralized control system stored on the terminal, which is used to control the scraper machine (2) buried above the warehouse, the belt conveyor (3) below the warehouse, the flap gate (8), the metering scale, the material level detector, and the pneumatic vibrator (7).

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