Multi-angle trestle flushing device applied to coal preparation plant

Abstract

The utility model relates to the technical field of coal washing, in particular to a multi-angle trestle flushing device applied to a coal preparation plant, which is mounted below a belt conveyor and connected with a high-pressure water pipe through a water supply component, and an electric valve, a manual valve and a pressure gauge are connected onto the high-pressure water pipe. The electric valve and the manual valve are connected with the control cabinet through control cables; the trestle flushing device comprises a water supply assembly, a left-right angle conversion mechanism, a front-back angle conversion mechanism, a framework, a long swing rod and a plurality of flushing swing assemblies connected to the long swing rod. The trestle ground can be flushed from near to far and from left to right in all directions, the flushing effect is improved, the flushing time is saved, and the water consumption is also saved. Flushing from left to right and then flushing from right to left repeatedly circulate, dead corners on the left side and the right side can be cleaned, flushing is complete and clean, and no coal dust is left.

Description

Technical Field

[0001] The utility model relates to the technical field of coal washing, in particular to a multi-angle trestle washing device used in a coal preparation plant. Background Art

[0002] At present, the trestle flushing device of the coal preparation plant is a device used to clean coal, which plays an important role in the coal processing process. The coal preparation plant transports coal of different particle sizes from the storage area to the processing equipment through the trestle, and the trestle flushing device is used to clean the coal during the coal loading process. The trestle flushing device is usually composed of a water spray system and a flushing trough. During the coal loading process, the water spray system sprays water onto the coal through a nozzle to clean the dust, impurities and fine particles on the surface of the coal. The flushing trough is an area that holds the flushing water, into which the washed coal falls, and the flushing water is discharged through the drainage system. The function of the trestle flushing device is to remove impurities on the surface of the coal and improve the quality and purity of the coal. The washed coal is easier to carry out subsequent sorting and processing, and it can also reduce environmental pollution and equipment wear.

[0003] At present, due to the large amount of coal conveyed by the belt conveyor on the trestle of the coal preparation plant and the large amount of dust, it is necessary to clean the ground on the trestle regularly. In the early days, the trestle was connected to the high-pressure water pipe through a manual valve by using a rubber hose. The other end was connected to a metal round pipe or a high-pressure water gun. The manual valve was opened manually, and high-pressure water was introduced into the rubber hose and sprayed out from the metal round pipe or the high-pressure water gun. The rubber hose was dragged back and forth by the metal hose or the high-pressure water gun to wash the ground. This method has a good effect on the ground washing without leaving dust. As long as the rubber hose is long enough, it can be washed to any position on the trestle ground. However, the disadvantage is that it takes up manual time, and the rubber hose is too long and bulky to drag. At present, there is also an automatic flushing pipeline cleaning method applied in the market. The pipeline is fixed under the conveyor belt, and several sets of fan-shaped nozzles are installed in the length direction of the pipeline. One end of the fixed pipeline is connected to an electric valve, and the input end of the electric valve is connected to the high-pressure water supply pipe. The electric valve is controlled by the electric control cabinet and the flushing time and flushing interval can be set. When the preset time is reached, the electric valve automatically opens to allow the introduction of high-pressure water. High-pressure water is sprayed out from several nozzles in a high-pressure fan-shaped water column, which also plays the role of flushing the ground. The disadvantage is that the pipes and nozzles are fixed in position, and there are some places that cannot be flushed and dead corners where residual coal ash accumulates.

[0004] Therefore, a multi-angle trestle flushing device applied to a coal preparation plant is needed to solve the above technical problems. Utility Model Content

[0005] The utility model is to overcome the deficiencies in the prior art and provide a multi-angle trestle flushing device applied to a coal preparation plant. The utility model can flush the trestle floor in all directions from near to far and from left to right. Flushing from near to far can not only ensure the flushing of nearby coal dust, but also accumulate water pressure to flush farther places, thereby improving the flushing effect, saving flushing time, and saving water.

[0006] The utility model adopts the following technical solution to solve the above technical problems: a multi-angle trestle flushing device applied to a coal preparation plant, which is installed under a belt conveyor, the trestle flushing device is connected to a high-pressure water pipe through a water supply assembly, an electric valve, a manual valve and a pressure gauge are connected to the high-pressure water pipe, and the electric valve and the manual valve are connected to a control cabinet through a control cable;

[0007] The trestle flushing device comprises a water supply component, a left-right angle conversion mechanism, a front-back angle conversion mechanism, a frame, a long swing rod, and a plurality of groups of flushing swing components connected to the long swing rod;

[0008] The left-right angle conversion mechanism comprises a thin cylinder and a driving rod, the output end of the thin cylinder and the driving rod are mutually drivingly connected, one end of the driving rod and the frame are mutually connected through a rotating block, and both ends of the long swing rod are respectively fixedly connected to the driving rod through locking nuts;

[0009] The front-to-rear angle conversion mechanism includes a gear shield, a servo motor, a worm gear reducer, a driving gear, a driven gear and a bearing seat, the worm gear reducer is connected to one side of the gear shield, the servo motor and the worm gear reducer are mutually driven and connected, the gear shaft is installed at the output end of the worm gear reducer, the driving gear and the driven gear are both arranged inside the gear shield, the driving gear is assembled on the gear shaft through a key, and the driven gear and the driving gear are meshed with each other;

[0010] The frame is installed on the bearing seat through the seat bearing A, and the driven gear is connected to one side of the seat bearing A.

[0011] Furthermore, the flushing swing assembly includes a fan-shaped duckbill nozzle, a joint A, a swing arm tube, a joint B, a seat bearing B, an external thread joint and a bellows. Each set of swing arm tubes is provided with two, and the joint B is respectively connected to the ends of the two swing arm tubes, and external thread joints are respectively connected to the two ends of the bellows. The two swing arm tubes are respectively connected to the external thread joints of the bellows through the joint B, and the fan-shaped duckbill nozzle is installed at the water outlet of the swing arm tube through the joint A.

[0012] Furthermore, the water supply assembly includes a water supply pipe and a tee joint, multiple bellows are connected to the water supply pipe, the bellows and the water supply pipe are interconnected, the tee joint is connected to the water inlet end of the water supply pipe, one end of the tee joint is interconnected with the high-pressure water pipe, and a pipe plug is installed at one end of the tee joint.

[0013] Furthermore, the three-way joint and the water supply pipe are connected to each other through oil A, and the three-way joint and oil A are tightened and fixed to each other through external thread A. The three-way joint and the high-pressure water pipe are connected to each other through oil B, and the three-way joint and oil B are tightened and fixed to each other through external thread B, and oil B and the high-pressure water pipe are tightened and fixed to each other through external thread C.

[0014] Furthermore, a proximity switch is installed on the gear shield, and a sensor sheet is connected to the driving gear. The proximity switch and the sensor sheet are used to control the angular range of the rotation angle of the trestle flushing device.

[0015] Furthermore, guide sleeves are sleeved on both left and right ends of the driving rod.

[0016] The advantages of the utility model are: the utility model provides a multi-angle trestle flushing device applied to a coal preparation plant, which has the following technical effects:

[0017] The utility model can wash the trestle floor from near to far and from left to right in all directions. Washing from near to far can not only ensure the washing of nearby coal dust, but also accumulate water pressure to wash farther places, thereby improving the washing effect, saving washing time, and saving water. Flushing from left to right and then from right to left repeatedly can clean the dead corners on both sides, making the washing completely clean without leaving coal dust. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 It is a schematic diagram of the structure of the utility model;

[0020] Figure 2 It is a schematic diagram of the structure of the utility model in the angle transformation state;

[0021] Figure 3 This is a schematic diagram of the main structure of the utility model in an assembled state;

[0022] Figure 4It is a side view structural schematic diagram of the utility model in the assembled state;

[0023] in:

[0024] 1. Sensor sheet; 2. Gear guard; 3. Proximity switch;

[0025] 4. Servo motor; 5. Worm gear reducer; 6. Reducer lock nut;

[0026] 7. Gear shaft; 8. Driving gear; 9. Small round nut;

[0027] 10. Pipe cap; 11. Driven gear; 12. Bearing block A;

[0028] 13. Bearing seat; 14. Frame; 15. Rotating block;

[0029] 16. Guide sleeve; 17. Locking nut; 18. Long swing rod;

[0030] 19. Fan-shaped duckbill nozzle; 20. Connector A; 21. Swing arm tube;

[0031] 22. Connector B; 23. Bearing with seat B; 24. Male thread connector;

[0032] 25. Bellows; 26. Thin cylinder; 27. Oil A;

[0033] 28. Male thread A; 29. ​​Tee joint; 30. Pipe plug;

[0034] 31. External thread B; 32. Oil thread B; 33. External thread C;

[0035] 34. Electric valve; 35. Belt conveyor; 36. Pressure switch;

[0036] 37. Manual valve; 38. High-pressure water pipe; 39. Driving rod;

[0037] 40. Water supply pipe. DETAILED DESCRIPTION

[0038] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0039] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present 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 present utility model. In addition, the terms "first", "second", and "third" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance. The terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0040] Embodiment 1:

[0041] Figure 1 It is a structural schematic diagram of the utility model. Figure 2 This is a schematic diagram of the structure of the utility model in the angle transformation state. Figure 3 This is a schematic diagram of the main structure of the utility model in an assembled state. Figure 4 FIG. 1 is a side view of the structure of the utility model in an assembled state, as shown in FIG. Figure 1 , Figure 2 , Figure 3 and Figure 4 A multi-angle trestle flushing device used in a coal preparation plant is shown, which is installed below a belt conveyor 35. The trestle flushing device is connected to a high-pressure water pipe 38 through a water supply assembly. An electric valve 34, a manual valve 37 and a pressure gauge are connected to the high-pressure water pipe 38. The electric valve 34 and the manual valve 37 are connected to a control cabinet through a control cable. The electric valve 34 and the manual valve 37 are connected through a control cable to realize remote control of the flushing device.

[0042] The trestle flushing device of the utility model comprises a water supply assembly, a left-right angle conversion mechanism, a front-back angle conversion mechanism, a frame 14, a long swing rod 18, and a plurality of flushing swing assemblies connected to the long swing rod 18. The water supply assembly is used to provide the clean water source required by the flushing device to ensure the normal operation of the system.

[0043] The left-right angle conversion mechanism in the utility model includes a thin cylinder 26 and a driving rod 39, the output end of the thin cylinder 26 and the driving rod 39 are mutually driven and connected, one end of the driving rod 39 and the skeleton 14 are mutually connected through a rotating block 15, and guide sleeves 16 are sleeved on both ends of the left and right ends of the driving shaft, and the two ends of the long swing rod 18 are respectively fixedly connected to the driving rod 39 by locking nuts 17. The thin cylinder 26 can move left and right through the driving rod 39 to enable the long swing rod 18 to achieve left-right angle conversion, thereby adjusting the position of the swing arm tube 21 and realizing all-round flushing.

[0044] The front and rear angle conversion mechanism in the utility model includes a gear shield 2, a servo motor 4, a worm gear reducer 5, a driving gear 8, a driven gear 11 and a bearing seat 13. The worm gear reducer 5 is connected to one side of the gear shield 2. The utility model is provided with a proximity switch 3 on the gear shield 2, and a sensor sheet 1 is connected to the driving gear 8. The proximity switch 3 and the sensor sheet 1 are used to control the angular range of the rotation angle of the trestle flushing device. The sensor sheet 1 in the utility model will rotate with the rotation of the driving gear 8. The proximity switch 3 in the utility model is installed on the panel of the gear shield 2, and the relative position with the sensor sheet 1 is set at the maximum angular position that needs to be limited. When the sensor sheet When the sensor sheet 1 is rotated to the proximity switch 3 position, the proximity switch 3 will detect the presence of the sensor sheet 1 and trigger the signal output. The external control system will perform feedback control according to the signal of the proximity switch 3 to stop or change the working state of the servo motor 4, thereby limiting the rotation angle of the entire flushing device to within the set range. If the sensor sheet 1 continues to rotate and exceeds the set rotation angle range, the proximity switch 3 will detect it again and trigger corresponding protection measures to ensure that it does not exceed the allowable rotation angle range. Through the cooperation of the sensor sheet 1 and the proximity switch 3, the rotation angle of the entire flushing device can be accurately monitored and controlled to avoid exceeding the design range, ensure the safety and stability of the equipment operation, and thus ensure the flushing range and effect.

[0045] The servo motor 4 and the worm gear reducer 5 in the utility model are mutually driven and connected, the gear shaft 7 is installed at the output end of the worm gear reducer 5, the driving gear 8 and the driven gear 11 are both arranged inside the gear shield 2, the driving gear 8 is assembled on the gear shaft 7 through a key, and the driven gear 11 and the driving gear 8 are meshed with each other. The skeleton 14 in the utility model is installed on the bearing seat 13 through the seat bearing A12, and the driven gear 11 is connected to one side of the seat bearing A12. When adjusting the front and rear angles, the servo motor 4 converts the high-speed rotating input into a low-speed input through the worm gear reducer 5. High torque output, because the worm gear reducer 5 at the output end is connected to the gear shaft 7, the worm gear reducer 5 transmits the low-speed high-torque force to the gear shaft 7, and as the gear shaft 7 rotates, the driving gear 8 also rotates. When the driving gear 8 rotates, its teeth will mesh with the teeth of the driven gear 11, thereby driving the driven gear 11 to rotate together. Through the support of the bearing seat 13, the rotation of the driven gear 11 can be stably transmitted to the skeleton 14, so that the skeleton 14 rotates around the seat bearing A12. The front and rear angle conversion mechanism can be used to control the change of the swing arm tube 21 in the front and rear angles, so that the flushing range is wider;

[0046] The flushing swing assembly in the utility model includes a fan-shaped duckbill nozzle 19, a joint A20, a swing arm tube 21, a joint B22, a seat bearing B23, an external thread joint 24 and a bellows 25. Each group of swing arm tubes 21 is provided with two, and the joints B22 are respectively connected to the ends of the two swing arm tubes 21, and the external thread joints 24 are respectively connected to the two ends of the bellows 25. The two swing arm tubes 21 are respectively connected to the external thread joints 24 of the bellows 25 through the joints B22, thereby enhancing the connection strength. The fan-shaped duckbill nozzle 19 is installed at the water outlet of the swing arm tube 21 through the joint A20. The fan-shaped duckbill nozzle 19 and other components can realize the spraying and swinging of the flushing water flow, thereby ensuring a uniform flushing effect.

[0047] The water supply assembly in the utility model includes a water supply pipe 40 and a three-way joint 29, a plurality of bellows 25 are connected to the water supply pipe 40, the bellows 25 and the water supply pipe 40 are interconnected, the three-way joint 29 is connected to the water inlet end of the water supply pipe 40, one end of the three-way joint 29 is interconnected with the high-pressure water pipe 38, and a pipe plug 30 is installed at one end of the three-way joint 29; the three-way joint 29 and the water supply pipe 40 are interconnected through an oil A27, the three-way joint 29 and the oil A27 are tightened and fixed to each other through an external thread A28, the three-way joint 29 and the high-pressure water pipe 38 are interconnected through an oil B32, the three-way joint 29 and the oil B32 are tightened and fixed to each other through an external thread B31, and the oil B32 and the high-pressure water pipe 38 are tightened and fixed to each other through an external thread C33, and a high-pressure water flow can be provided through the high-pressure water pipe 38, and the opening and closing of the water flow can be controlled by an electric valve 34 and a manual valve 37.

[0048] Working principle:

[0049] Start-up phase: When cleaning operations are required, the remote control system sends a command to the electric valve 34 to open the water supply pipe 40 of the water supply assembly, and the high-pressure water source enters the bellows 25 through the water supply pipe 40 and the three-way joint 29, and is transmitted along the bellows 25 to the flushing swing assembly.

[0050] Angle adjustment: The left and right angle conversion mechanism starts to work, and the thin cylinder 26 changes the left and right angles of the long swing rod 18 through the left and right movement of the driving rod 39, thereby adjusting the position of the swing arm tube 21 to achieve a full range of flushing. At the same time, the front and rear angle conversion mechanism controls the servo motor 4 to convert the high-speed rotation input into a low-speed high-torque output through the worm gear reducer 5, and controls the change of the front and rear angles of the swing arm tube 21 to make the flushing range wider.

[0051] Spraying and swinging: The flushing swing assembly starts working, the fan-shaped duckbill nozzle 19 is installed at the water outlet of the swing arm tube 21 through the joint A20, and starts to spray clean water. The design of the fan-shaped duckbill nozzle 19 allows the water flow to swing to ensure a uniform flushing effect.

[0052] Angle monitoring: During the entire working process, the sensor sheet 1 and the proximity switch 3 continuously monitor the rotation angle of the entire flushing device to ensure that it does not exceed the allowable rotation angle range, thereby ensuring the safety and stability of the equipment operation.

[0053] Ending stage: When the cleaning operation is completed or needs to be stopped, the remote control system sends a command to the electric valve 34 to close the water supply pipe 40 and stop the cleaning operation.

[0054] During the entire working process, various components cooperate with each other to start the cleaning operation, adjust the angle, spray and swing through the instructions of the remote control system, and monitor the system status through sensors to finally complete the cleaning task.

[0055] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments can still be modified, or some or all of the technical features therein can be replaced by equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. A multi-angle trestle flushing device used in a coal preparation plant, installed below a belt conveyor (35), the trestle flushing device is connected to a high-pressure water pipe (38) through a water supply assembly, an electric valve (34), a manual valve (37) and a pressure gauge are connected to the high-pressure water pipe (38), and the electric valve (34) and the manual valve (37) are both connected to a control cabinet through a control cable; It is characterized in that The pier flushing device comprises a water supply component, a left-right angle conversion mechanism, a front-back angle conversion mechanism, a frame (14), a long swing rod (18), and a plurality of groups of flushing swing components connected to the long swing rod (18); The left-right angle conversion mechanism comprises a thin cylinder (26) and a driving rod (39), the output end of the thin cylinder (26) and the driving rod (39) are mutually drivingly connected, one end of the driving rod (39) and the frame (14) are mutually connected via a rotating block (15), and both ends of the long swing rod (18) are respectively fixedly connected to the driving rod (39) via locking nuts (17); The front-rear angle conversion mechanism comprises a gear shield (2), a servo motor (4), a worm gear reducer (5), a driving gear (8), a driven gear (11) and a bearing seat (13); the worm gear reducer (5) is connected to one side of the gear shield (2); the servo motor (4) and the worm gear reducer (5) are mutually driven and connected; a gear shaft (7) is installed at the output end of the worm gear reducer (5); the driving gear (8) and the driven gear (11) are both arranged inside the gear shield (2); the driving gear (8) is assembled on the gear shaft (7) by a key; and the driven gear (11) and the driving gear (8) are mutually meshed; The frame (14) is mounted on the bearing seat (13) via a seat bearing A (12), and the driven gear (11) is connected to one side of the seat bearing A (12).

2. The multi-angle trestle flushing device used in a coal preparation plant according to claim 1 is characterized in that: The flushing swing assembly comprises a fan-shaped duckbill spray head (19), a joint A (20), a swing arm tube (21), a joint B (22), a seat bearing B (23), an external thread joint (24) and a bellows (25). Each set of swing arm tubes (21) is provided with two, the joint B (22) is respectively connected to the ends of the two swing arm tubes (21), and the two ends of the bellows (25) are respectively connected to the external thread joints (24), and the two swing arm tubes (21) are respectively connected to the external thread joints (24) of the bellows (25) through the joint B (22), and the fan-shaped duckbill spray head (19) is installed at the water outlet of the swing arm tube (21) through the joint A (20).

3. The multi-angle trestle flushing device used in a coal preparation plant according to claim 2 is characterized in that: The water supply assembly comprises a water supply pipe (40) and a three-way joint (29); a plurality of the bellows (25) are connected to the water supply pipe (40); the bellows (25) and the water supply pipe (40) are interconnected; the three-way joint (29) is connected to the water inlet end of the water supply pipe (40); one end of the three-way joint (29) is interconnected with the high-pressure water pipe (38); and a pipe plug (30) is installed at one end of the three-way joint (29).

4. The multi-angle trestle flushing device used in a coal preparation plant according to claim 3 is characterized in that: The three-way joint (29) and the water supply pipe (40) are connected to each other via an oil thread A (27), the three-way joint (29) and the oil thread A (27) are screwed together and fixed together via an external thread A (28), the three-way joint (29) and the high-pressure water pipe (38) are connected to each other via an oil thread B (32), the three-way joint (29) and the oil thread B (32) are screwed together and fixed together via an external thread B (31), and the oil thread B (32) and the high-pressure water pipe (38) are screwed together and fixed together via an external thread C (33).

5. The multi-angle trestle flushing device used in a coal preparation plant according to claim 1 is characterized in that: A proximity switch (3) is installed on the gear shield (2), and a sensor sheet (1) is connected to the driving gear (8). The proximity switch (3) and the sensor sheet (1) are used to control the rotation angle range of the trestle flushing device.

6. The multi-angle trestle flushing device used in a coal preparation plant according to claim 1 is characterized in that: The left and right ends of the driving rod (39) are both sleeved with guide sleeves (16).

Images