Lifting device for coal mine crushing and loading
By using negative pressure conveying equipment and baffle design, the problems of coal dust flying and coal chunks slipping are solved, and efficient independent conveying of coal after crushing is achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-09
- Publication Date
- 2026-03-31
AI Technical Summary
Existing belt hoisting equipment is prone to coal dust flying and moisture during the transportation of crushed coal in mines. Furthermore, coal dust and coal lumps are prone to slipping when transported together, resulting in resource waste and low transportation efficiency.
The negative pressure conveying equipment separates coal powder and coal lumps in the discharge channel and conveys them through an independent path. Combined with the inclined discharge channel and baffle design, it ensures the separation and stable conveying of coal powder and coal lumps.
It enables independent conveying of pulverized coal and coal lumps, avoiding problems of flying and slipping, and improving conveying efficiency and resource utilization.
Smart Images
Figure CN224062038U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to coal mine technical field, concretely relates to a kind of coal mine grinding loading hoisting device. BACKGROUND
[0002] In the process of coal mining, the coal with large volume needs to be crushed, and the crushed coal is conveyed to a high place by a hoisting device for subsequent transportation or temporary storage for subsequent processing. In the prior art, a belt hoisting device is often used to convey the crushed coal. Since the crushed coal includes coal powder with extremely small particles and coal blocks with relatively large particles, when the belt hoisting device is used, not only is the coal powder likely to fly and be damp, causing waste of coal resources, but also the coal powder and the coal blocks are conveyed together, which is likely to cause the coal blocks to slide off for the belt hoisting device with a large inclination angle, affecting the efficiency of coal conveying. SUMMARY
[0003] To solve the above problems, the utility model provides a kind of coal mine grinding loading hoisting device, solve the problem of waste of coal resources and affect the efficiency of coal conveying caused by the belt hoisting device conveying the crushed coal in the background art.
[0004] The utility model provides a kind of coal mine grinding loading hoisting device, including the crushing box and the conveying belt for conveying the crushed coal, and the negative pressure conveying equipment for separating the coal powder with small particles from the coal blocks with large particles during the process of the crushed coal being guided along the discharge passage is installed on the side wall of the discharge passage of the crushing box, and the independent conveying of the coal powder and the coal blocks is realized through different paths.
[0005] Preferably, the coal collection bin includes a coal powder collection bin and a coal block collection bin located below the coal powder collection bin, and the coal block collection bin is connected to the conveying belt through a material guide cover to receive and temporarily store the coal blocks directly falling from the conveying belt.
[0006] Preferably, the negative pressure conveying equipment includes a negative pressure conveying pipeline connected between the discharge passage and the coal powder collection bin, and a vacuum pump connected to the coal powder collection bin through a negative pressure pipeline, and the vacuum pump generates negative pressure to extract the coal powder and convey it to the coal powder collection bin through the negative pressure conveying pipeline.
[0007] Preferably, the discharge passage is inclined, and the length of the discharge passage is greater than the vertical distance from the crushing box to the conveying belt.
[0008] Preferably, a plurality of partition plates are uniformly installed on the conveying belt, and a conveying bin for separately carrying the coal blocks is formed between two adjacent partition plates to prevent the coal blocks from sliding off during the conveying process.
[0009] Preferably, the coal powder collecting bin and the coal block collecting bin are both equipped with a material level sensor for real-time monitoring of the material inventory in the respective bin, and automatically triggering a replenishment or discharge operation according to a preset threshold value, to ensure effective utilization of the collecting bin and avoid material overflow.
[0010] The beneficial effects of the present utility model are: by installing a negative pressure conveying device on the discharge channel, under the action of the vacuum pump, negative pressure is formed in the coal powder collecting bin and the negative pressure conveying pipeline during the coal mine falling process, to realize the separation of coal powder and coal blocks, so that the coal powder and coal blocks can be independently conveyed, to solve the problem of coal powder flying and getting wet:
[0011] At the same time, a plurality of baffle plates are arranged on the conveying belt, and a plurality of conveying bins are formed, which can solve the problem of coal blocks sliding on the inclined lifting device when conveying coal blocks, thereby improving the efficiency of coal mine conveying. BRIEF DESCRIPTION OF DRAWINGS
[0012] Figure 1 It is a first perspective structural schematic view of the present utility model;
[0013] Figure 2 It is a second perspective structural schematic view of the present utility model;
[0014] Figure 3 It is a third perspective structural schematic view of the present utility model;
[0015] Figure 4 It is a first sectional view structural schematic view of the present utility model;
[0016] Figure 5 It is a second sectional view structural schematic view of the present utility model.
[0017] In the figure: 1, crushing box; 2, conveying belt; 3, discharge channel; 4, negative pressure conveying device; 5, coal mine collecting bin; 6, coal powder collecting bin; 7, coal block collecting bin; 8, material guide cover; 9, valve; 10, unloading pipe; 11, discharge door; 12, negative pressure conveying pipeline; 13, vacuum pump; 14, negative pressure pipe; 15, baffle plate; 16, conveying bin; 17, material level sensor; 18, crushing roller; 19, motor. DETAILED DESCRIPTION
[0018] In order for those skilled in the art to better understand the technical scheme of the present utility model, the present utility model will be described in detail below in conjunction with the drawings, and the description in this part is only exemplary and explanatory, and should not have any limiting effect on the protection scope of the present utility model.
[0019] The utility model discloses a kind of lifting devices of coal mine crushing loading, it mainly includes crushing box 1 and is installed in crushing box 1 below, and is used to convey the conveying belt 2 of coal mine after crushing, crushing box 1 includes crushing assembly, mainly two relatively installed crushing rollers 18, and two crushing rollers 18 are connected by belt, two crushing rollers 18 are all driven by motor 19 and run, when one of motor 19 drives crushing roller 18 to rotate clockwise, another motor 19 drives crushing roller 18 to rotate counterclockwise, when coal block enters crushing box 1, the crushing of coal block is realized, coal block after crushing is lifted to destination along conveying belt 2, above is the introduction of a kind of lifting device of coal mine crushing loading of existing coal mine.
[0020] As can be known from the above, the lifting device of coal mine crushing loading in use has the following defects: after crushing, coal includes coal powder with extremely small particles and coal block with relatively large particles; when using belt-type lifting equipment, coal powder is prone to flying and getting wet, causing waste of coal resources; coal powder and coal block are conveyed together; for belt-type lifting equipment with a large inclination angle, coal block is also prone to sliding, affecting the efficiency of coal conveying; based on the above problems, the utility model uses the following improvement mode to solve them.
[0021] As shown in Figures 1-5 , a lifting device of coal mine crushing loading includes crushing box 1 and conveying belt 2 installed below crushing box 1 and used to convey crushed coal; it also includes negative pressure conveying equipment 4 installed on the side wall of discharge passage 3 of crushing box 1, which is used to separate coal powder with small particles from coal block with large particles during the process of discharging crushed coal along discharge passage 3, and to realize independent conveying of coal powder and coal block through different paths to solve the problem of flying and getting wet of coal powder during conveying.
[0022] Further, as shown in Figures 1-4 , it also includes coal collection bin 5, which includes coal powder collection bin 6 and coal block collection bin 7 located below coal powder collection bin 6; coal block collection bin 7 is connected to conveying belt 2 through guide cover 8 to receive and temporarily store coal block directly falling from conveying belt 2; the side upper end of guide cover 8 close to conveying belt 2 is provided with an opening to facilitate the entry of coal block into coal block collection bin 7 along guide cover 8; coal powder collection bin 6 is used to collect coal powder conveyed by negative pressure conveying equipment 4; unloading pipe 10 with valve 9 is also installed on coal powder collection bin 6 to facilitate the discharge of coal powder; discharge door 11 is opened below coal block collection bin 7 to facilitate the discharge of coal block in coal block collection bin 7.
[0023] Further, as shown in Figures 3-4As shown, the negative pressure conveying device 4 includes a negative pressure conveying pipe 12 connected between the discharge channel 3 and the coal powder collecting bin 6, and a vacuum pump 13 connected with the coal powder collecting bin 6 through a negative pressure pipe 14, the vacuum pump 13 generates negative pressure to extract coal powder and convey it to the coal powder collecting bin 6 through the negative pressure conveying pipe 12, when the crushed coal blocks fall along the discharge channel 3 under the action of gravity, the coal powder is separated from the coal blocks and is conveyed into the coal powder collecting bin 6 along the negative pressure conveying pipe 12, while the coal blocks continue to slide along the discharge channel 3 to the conveying belt 2 and are conveyed to the coal block collecting bin 7 along the conveying belt 2, which can realize the separation and independent conveying of coal blocks and coal powder, and can also avoid the problems of flying and moisture of coal powder in the conveying process, such as Figure 4 As shown, a filter screen is also installed at the air inlet of the negative pressure pipe 14 to avoid the coal powder in the coal powder collecting bin 6 being extracted along the negative pressure pipe 14 to affect the vacuum pump 13.
[0024] Further, as shown in the Figure 2 The discharge channel 3 is inclined and the length of the discharge channel 3 is greater than the vertical distance from the crushing box 1 to the conveying belt 2, the inclination and length optimization of the discharge channel 3 ensures the smooth separation of coal powder and coal blocks under the action of gravity, such as Figure 4 The bottom end of the discharge channel 3 is located above the conveying belt 2, which can reduce the impact of coal blocks on the conveying belt 2 and prolong the service life of the conveying belt 2.
[0025] Further, as shown in the Figure 1 The conveying belt 2 is uniformly provided with a plurality of partition plates 15, and a conveying bin 16 for separately carrying coal blocks is formed between adjacent two partition plates 15, which effectively prevents the coal blocks from sliding on the inclined conveying belt 2 during the conveying process, improves the stability and efficiency of coal conveying, and the partition plates 15 also play a role in separating coal blocks, so that each coal block can be independently carried and conveyed, further improving the accuracy of conveying.
[0026] Further, as shown in the Figure 4 The coal powder collecting bin 6 and the coal block collecting bin 7 are both provided with a material level sensor 17 for real-time monitoring of the material inventory in the respective bin, and automatically triggering the replenishment or discharge operation according to the preset threshold value, to ensure the effective use of the collecting bin and avoid material overflow, in actual use, the material level sensor 17 is connected with the control system to timely remind the workers.
Claims
1. A coal mine crushing and loading hoisting device, comprising a crushing box (1) and a conveying belt (2) installed below the crushing box (1) and used for conveying the crushed coal mine, characterized in that: The negative pressure conveying device (4) is installed on the side wall of the discharge channel (3) of the crushing box (1), and is used to separate the coal powder with small particles from the coal blocks with large particles during the process of guiding the crushed coal along the discharge channel (3), and to realize independent conveying of the coal powder and the coal blocks through different paths.
2. A coal mine pulverized load hoisting device according to claim 1, characterized in that: The coal mine collecting bin (5) includes a coal powder collecting bin (6) and a coal block collecting bin (7) located below the coal powder collecting bin (6), and the coal block collecting bin (7) is connected with the conveying belt (2) through a material guide cover (8) to receive and temporarily store the coal blocks directly falling from the conveying belt (2).
3. A coal mine pulverized load hoisting device according to claim 2, characterized in that: The negative pressure conveying device (4) includes a negative pressure conveying pipeline (12) connected between the discharge channel (3) and the coal powder collecting bin (6), and a vacuum pump (13) connected with the coal powder collecting bin (6) through a negative pressure pipeline (14), and the vacuum pump (13) generates negative pressure to extract the coal powder and convey it to the coal powder collecting bin (6) through the negative pressure conveying pipeline (12).
4. A coal mine pulverized load hoisting device according to claim 3, characterized in that: The discharge channel (3) is inclined, and the length of the discharge channel (3) is greater than the vertical distance from the crushing box (1) to the conveying belt (2).
5. A coal mine pulverized load hoisting device according to claim 1, characterized in that: A plurality of partition plates (15) are uniformly installed on the conveying belt (2), and a conveying bin (16) for separately carrying the coal blocks is formed between two adjacent partition plates (15) to prevent the coal blocks from sliding during the conveying process.
6. A coal mine pulverized load hoisting device according to claim 2, characterized in that: The coal powder collecting bin (6) and the coal block collecting bin (7) are both equipped with a material level sensor (17).