Belt conveyor trestle cleaning device

Abstract

The utility model discloses a belt conveyor trestle cleaning device which is characterized in that a material blowing air pipe and a material sweeping air pipe are sequentially arranged below the return stroke face of a belt at the position of a belt conveyor head, the material sweeping air pipe is arranged on the side, away from a stock bin, of the material blowing air pipe, an air outlet seam of the material blowing air pipe faces the return stroke face, and an air outlet seam of the material sweeping air pipe faces the stock bin; an auxiliary chute is arranged in the stock bin, an opening is formed in the top of the auxiliary chute, the auxiliary chute is located below the return stroke face between the blowing air pipe and the belt roller, and the bottom of the auxiliary chute is communicated with the main chute; a plurality of flushing water pipes are arranged in the gallery, each flushing water pipe is provided with a plurality of nozzles, and the nozzles face the ground in the gallery. Materials on the return stroke face of the belt are blown off by the blowing air pipe and then blown into the auxiliary chute by the sweeping air pipe, the flushing water pipe sprays water to the ground in the gallery for flushing, the cleaning effect is good, mutual abrasion caused by contact of a traditional sweeper and the belt face can be avoided, manual cleaning is not needed, the labor intensity is relieved, and the working efficiency is improved.

Description

Technical field:

[0001] The utility model belongs to the technical field of belt conveying, and in particular relates to a belt conveyor trestle cleaning device. Background technology:

[0002] In the process of coal transportation, belt conveyor trestle is often used for transportation, such as Figure 1 As shown, the trestle includes a hollow corridor and a support frame for support. The belt conveyor is set in the corridor, and legs are set at intervals to support the belt. Coal and other materials are transported to the silo through the belt conveyor and fall into the chute. In the process of transporting materials by the belt conveyor, the conveyor belt surface often carries sticky substances, such as coal dust, mud, powdery materials, etc., some of which will adhere to the working surface of the conveyor belt, making it difficult to unload during unloading. The adhered materials will adhere to the bottom of the belt and accumulate more and more. When the adhered materials accumulate to a certain extent, it will cause the belt to deviate; at the same time, manual cleaning, adjustment, and replacement of the belt are required, which increases the labor intensity. In addition, the adhered materials will also fall into the corridor as the belt returns, accumulating more and more.

[0003] At present, the commonly used cleaning method is for workers to flush the belt and corridor with a water pipe. However, for safety reasons, the belt conveyor head roller is usually surrounded by a protective net and driven. It cannot be flushed with a water pipe during the production process. In addition, according to safety regulations, it is prohibited to remove the protective net during the production process, resulting in coal accumulation at the belt conveyor head. The only way is to remove the protective net after stopping the machine, shovel the coal with a shovel or flush it with a water pipe. The workload is large, time-consuming and labor-intensive. There are also some cleaning methods, such as patent CN220536705U, which is to install a scraper at one end of the belt conveyor and use the scraper to scrape off the adhered materials on the surface of the belt. However, the scraper head wears quickly, and the alloy blade head is easy to scratch the belt. Daily maintenance is frequent and the maintenance cost is high. Utility model content:

[0004] The utility model aims to provide a belt conveyor trestle cleaning device, which can be used to clean the belt conveyor trestle, saves time and effort, and solves the problems mentioned in the background technology.

[0005] The utility model is implemented by the following technical solution:

[0006] A belt conveyor trestle cleaning device comprises a trestle and a belt conveyor; the trestle comprises a corridor and a support frame for supporting the corridor, the belt conveyor is arranged in the corridor, the belt conveyor comprises a belt roller and a belt; the belt comprises a feeding surface and a return surface, the head of the belt conveyor is arranged in a silo, a main chute is arranged in the silo, the material drop point of the belt conveyor is located on the main chute, and a blowing air duct and a sweeping air duct are arranged in sequence below the return surface at the head of the belt conveyor, the sweeping air duct The pipe is arranged on the side of the blowing air duct away from the silo, the outlet slit of the blowing air duct faces the return surface, and the outlet slit of the sweeping air duct faces the silo; an auxiliary chute is arranged in the silo, the top of the auxiliary chute is open and located below the return surface between the blowing air duct and the belt roller, and the bottom of the auxiliary chute is connected with the main chute; a plurality of flushing water pipes are arranged in the corridor, each of which is provided with a plurality of nozzles, and the nozzles face the ground in the corridor. The blowing air duct blows off the material adhering to the return surface, and the sweeping air duct blows the material falling into the corridor toward the direction of the silo, and enters the main chute from the auxiliary chute, without manual cleaning, which not only avoids the belt deviation caused by too much material accumulation, but also allows the material to be recycled into the main chute, saving materials. The flushing water pipe sprays high-pressure water onto the ground of the corridor, which can clean the spilled materials on the ground in the corridor. The flushing water mixed with the materials flows along the corridor to the sweeping pump pit, and is pumped to the coal sludge water treatment system of the coal preparation plant through the sweeping pump. No manual cleaning is required, which reduces the labor intensity of workers.

[0007] Furthermore, both the blowing air duct and the sweeping air duct are provided with air outlet slits, and the width of the air outlet slits is 1.2-1.8 mm.

[0008] Furthermore, the vertical distance between the blowing air duct and the return surface is 10 to 20 mm.

[0009] Furthermore, the length of the auxiliary chute is the same as the width of the belt conveyor, and the width of the auxiliary chute is 8 to 15 cm.

[0010] Furthermore, it also includes an air inlet main pipe, the air outlet of which is connected with the blowing air duct and the sweeping air duct in sequence; the air inlet main pipe is provided with an air inlet solenoid valve and a pressure gauge, the air inlet solenoid valve is used to control the entry of high-pressure air, and the pressure gauge is used to monitor the pressure in the air inlet main pipe and the blowing air duct and the sweeping air duct; the blowing air duct is provided with a first vent valve at one end away from the air inlet main pipe, and the sweeping air duct is provided with a second vent valve at one end away from the air inlet main pipe. When the pressure gauge shows that the pressure exceeds the normal value, it means that the blowing air duct and the sweeping air duct may be blocked, resulting in no air output or the air output is lower than the air input. At this time, open the first vent valve and the second vent valve to release the air, and clean and repair the blowing air duct and the sweeping air duct.

[0011] Furthermore, it also includes a water inlet main pipe, the water outlet of which is connected to the plurality of flushing water pipes; the water inlet main pipe is provided with a water inlet solenoid valve for controlling the entry of high-pressure water.

[0012] Furthermore, each flushing water pipe is provided with a time-controlled solenoid valve at one end close to the water inlet main pipe, and a drain valve at one end away from the water inlet main pipe. Each flushing water pipe is provided with the time-space solenoid valve, and the action interval and action time of each time-space solenoid valve can be controlled by a time-controlled switch, so as to control the start and stop action of the water spray of each flushing water pipe, so as to achieve the purpose of cleaning and saving water as much as possible. After running for a period of time, the drain valve is opened, and the inner wall of the flushing water pipe is flushed with high-pressure water to play a cleaning role.

[0013] Beneficial effects of the utility model:

[0014] (1) A belt conveyor trestle cleaning device is provided with a blowing duct, a sweeping duct, and an auxiliary chute. The material on the return surface of the belt at the head of the belt conveyor is blown off by the blowing duct and then blown into the auxiliary chute by the sweeping duct. First, the material on the side of the sweeping duct close to the silo can be blown into the auxiliary chute, which not only achieves the purpose of cleaning but also recovers the material; second, there is no contact with the belt surface, avoiding the mutual wear caused by the contact between the traditional cleaners such as scrapers and the belt surface; third, there is no need for manual cleaning, which reduces labor intensity, increases safety, and saves costs; fourth, cleaning can be performed while the belt conveyor is working without stopping the machine, which improves work efficiency.

[0015] (2) A number of flushing water pipes are arranged under the return surface of the belt in the corridor to automatically spray water to flush the ground in the corridor, and a time-controlled solenoid valve is used to control the operation of each flushing water pipe, which has a good cleaning effect, reduces the labor intensity of workers, and saves costs. Description of the drawings:

[0016] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 It is a schematic diagram of the belt conveyor trestle described in the background technology;

[0018] Figure 2 A schematic side view of a belt conveyor trestle cleaning device according to an embodiment;

[0019] Figure 3 It is a partial schematic diagram of the belt conveyor trestle cleaning device of the embodiment (the dotted arrow in the figure is the material flow direction);

[0020] Figure 4 for Figure 3 The enlarged schematic diagram of point A in the middle (the dotted arrow in the figure indicates the direction of the wind);

[0021] Figure 5 A bottom view schematically showing a belt conveyor trestle cleaning device according to an embodiment.

[0022] The accompanying drawings are as follows:

[0023] 10. Trestle; 11. Corridor; 12. Support frame; 20. Conveyor belt; 21. Belt roller; 22. Feed surface; 23. Return surface; 24. Support leg; 30. Silo; 31. Main chute; 32. Auxiliary chute; 40. Blowing air duct; 41. First vent valve; 50. Sweeping air duct; 51. Second vent valve; 60. Air inlet main pipe; 61. Air inlet solenoid valve; 62. Pressure gauge; 70. Flushing water pipe; 71. Time-controlled solenoid valve; 72. Drain valve; 73. Nozzle; 80. Water inlet main pipe; 81. Water inlet solenoid valve. Specific implementation method:

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. In the description of the utility model, it should be noted that the orientation or position relationship indicated by the terms "middle", "upper", "lower", "inner", "outer", etc. is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0025] Example

[0026] A belt conveyor trestle cleaning device comprises a trestle 10 and a belt conveyor 20; the trestle 10 comprises a corridor 11 and a support frame 12 for supporting the corridor 11, the belt conveyor 20 is arranged in the corridor 11, and the belt conveyor 20 comprises a belt roller 21 and a belt; the belt comprises a feeding surface 22 and a return surface 23, the head of the belt conveyor 20 is arranged in a silo 30, a main chute 31 is arranged in the silo 30, and the dropping point of the belt conveyor 20 is located on the main chute 31.

[0027] like Figure 2-Figure 4 As shown, a blowing air duct 40 and a sweeping air duct 50 are sequentially arranged below the return surface 23 at the head of the belt conveyor 20. Both the blowing air duct 40 and the sweeping air duct 50 are provided with air outlet slits, and the width of the air outlet slits is 1.5 mm. The sweeping air duct 50 is arranged on the side of the blowing air duct 40 away from the silo 30; the air outlet slit of the blowing air duct 40 faces the return surface 23, and the vertical distance between the blowing air duct 40 and the return surface 23 is 15 mm; the air outlet slit of the sweeping air duct 50 faces the silo 30. An auxiliary chute 32 is arranged in the silo 30. The length of the auxiliary chute 32 is the same as the width of the belt conveyor 20, and the width of the auxiliary chute 32 is 10 cm. The top of the auxiliary chute 32 is open and is located below the return surface 23 between the blowing air duct 40 and the belt roller 21. The bottom of the auxiliary chute 23 is connected to the main chute 31. As shown Figure 5 As shown, it also includes an air inlet main pipe 60, the air outlet of which is connected to the blowing air duct 40 and the sweeping air duct 50 in sequence; an air inlet solenoid valve 61 and a pressure gauge 62 are provided on the air inlet main pipe 60; a first vent valve 41 is provided at one end of the blowing air duct 40 away from the air inlet main pipe 60, and a second vent valve 51 is provided at one end of the sweeping air duct 50 away from the air inlet main pipe 60.

[0028] like Figure 2-Figure 5As shown, a plurality of flushing water pipes 70 are arranged in the corridor 12, and a plurality of nozzles 73 are arranged on each flushing water pipe 70, specifically duckbill nozzles, and the nozzles 73 face the ground in the corridor 11. A water inlet main pipe 80 is also included, and the water outlet of the water inlet main pipe 80 is connected to the plurality of flushing water pipes 70; a water inlet solenoid valve 81 is arranged on the water inlet main pipe 80. A time-controlled solenoid valve 71 is arranged at one end of each flushing water pipe 70 close to the water inlet main pipe 80, and a drain valve 72 is arranged at one end away from the water inlet main pipe 80.

[0029] During operation, after the control motor of the belt roller 21 is started, the air inlet solenoid valve 61 is opened, and the air inlet solenoid valve 61 can output 4-20 MPa current. The air volume entering the air inlet main pipe 60 is adjusted according to the operating conditions, and the high-pressure air enters the blowing air duct 40 and the sweeping air duct 50 in turn. The air in the blowing air duct 40 is blown toward the return surface 23 of the belt through its air outlet slit, and the material attached to the return surface 23 is blown off. The air in the sweeping air duct 50 is blown toward the silo 30 through its air outlet slit, so that the material blown off by the blowing air duct 40 is blown into the auxiliary chute 32, and then the material enters the main chute 31 under the action of gravity; when the pressure gauge 62 set on the air inlet main pipe 60 shows that the pressure exceeds the set value, it means that the blowing air duct 40 and / or the sweeping air duct 50 may be blocked, and the first vent valve 41 and the second vent valve 51 are opened to clean the inner walls of the blowing air duct 40 and the sweeping air duct 50 by introducing high-pressure air.

[0030] When the control motor of the belt roller 21 is started, the water inlet solenoid valve 81 is opened, and all the time-space solenoid valves 71 are controlled by the external time-controlled switch. The action interval and action time of the time-space solenoid valve 71 can be set. The time-space solenoid valve 71 closest to the belt roller 21 and the time-space solenoid valve 71 farthest from the belt roller 21 can be opened successively under the action of the time-controlled switch, thereby realizing the sequential spraying of the flushing water pipe 70 to flush the ground, and the flushing water and the flushed materials flow down along the corridor 12. After the device has been running for a period of time, the water release valve 72 is opened, and the flushing water pipe 70 is cleaned by passing high-pressure water or the like.

[0031] The device may also be provided with a controller, which is respectively connected to the control motor of the belt roller 21, the air inlet solenoid valve 61, the pressure gauge 62, the first drain valve 41, the second drain valve 51, the water inlet solenoid valve 81, the time and space solenoid valve 71, and the drain valve 72 by signals, so as to realize automatic control of the cleaning device.

[0032] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A belt conveyor trestle cleaning device, comprising a trestle and a belt conveyor; the trestle comprises a corridor and a support frame for supporting the corridor, the belt conveyor is arranged in the corridor, the belt conveyor comprises a belt roller and a belt; the belt comprises a feeding surface and a return surface, the head of the belt conveyor is arranged in a silo, a main chute is arranged in the silo, and the drop point of the belt conveyor is located on the main chute, characterized in that: A blowing air duct and a sweeping air duct are sequentially arranged below the return surface at the head of the belt conveyor. The sweeping air duct is arranged on the side of the blowing air duct away from the silo, the air outlet slit of the blowing air duct faces the return surface, and the air outlet slit of the sweeping air duct faces the silo; an auxiliary chute is arranged in the silo, the top of the auxiliary chute is open and is located below the return surface between the blowing air duct and the belt roller, and the bottom of the auxiliary chute is connected with the main chute; a plurality of flushing water pipes are arranged in the corridor, each of the flushing water pipes is provided with a plurality of nozzles, and the nozzles face the ground in the corridor.

2. A belt conveyor trestle cleaning device according to claim 1, characterized in that: The blowing air duct and the sweeping air duct are both provided with air outlet slots, and the width of the air outlet slots is 1.2-1.8 mm.

3. A belt conveyor trestle cleaning device according to claim 2, characterized in that: The vertical distance between the blowing air duct and the return surface is 10 to 20 mm.

4. A belt conveyor trestle cleaning device according to claim 1, characterized in that: The length of the auxiliary chute is the same as the width of the belt conveyor, and the width of the auxiliary chute is 8 to 15 cm.

5. A belt conveyor trestle cleaning device according to claim 1, characterized in that: It also includes an air inlet main pipe, the air outlet of which is connected with the blowing air duct and the sweeping air duct in sequence; the air inlet main pipe is provided with an air inlet solenoid valve and a pressure gauge; the end of the blowing air duct away from the air inlet main pipe is provided with a first vent valve, and the end of the sweeping air duct away from the air inlet main pipe is provided with a second vent valve.

6. A belt conveyor trestle cleaning device according to claim 1, characterized in that: It also includes a water inlet main pipe, the water outlet of which is connected to the plurality of flushing water pipes; and a water inlet solenoid valve is arranged on the water inlet main pipe.

7. A belt conveyor trestle cleaning device according to claim 6, characterized in that: Each flushing water pipe is provided with a time-controlled solenoid valve at one end close to the water inlet main pipe, and a drain valve at one end away from the water inlet main pipe.

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