Coal dust spraying and dust falling device for coal mining

Abstract

The utility model provides a coal dust spraying and dust falling device for coal mining, which comprises supports fixedly arranged on two sides of a rack at the output end of a conveying belt, a transverse plate is fixedly arranged between the top ends of the two supports, a spraying pipe is erected below the transverse plate, and spraying heads are uniformly arranged at the bottom of the spraying pipe; the spraying pipe is connected with a water supply assembly through a pipeline, the water supply assembly is electrically connected with a controller, and the controller is used for controlling the water supply assembly to supply water to the spraying pipe or stop supplying water to the spraying pipe. The controller is electrically connected with a relay for controlling the start and stop of the conveying belt and is used for collecting power-on and power-off signals of the conveying belt; according to the utility model, the water supply assembly and the conveying belt are in linkage control, spraying dust fall is carried out when the conveying belt runs, spraying dust fall is stopped after the conveying belt stops and delays for a period of time, the spraying dust fall is not influenced by the height of coal gangue flow on the conveying belt, and the dust fall effect is ensured.

Description

Technical Field

[0001] The utility model belongs to the technical field of coal mining equipment, and in particular relates to a coal dust spraying and dust reduction device for coal mining. Background Art

[0002] During the process of coal mining and transportation, coal will generate dust due to friction and collision, especially at the coal transfer point or drop point. Due to the free fall of coal, a "flying" phenomenon will occur, further increasing the amount of dust generated.

[0003] In the prior art, the Chinese utility model patent document with authorization announcement number CN219751305U discloses a dust reduction device for coal production, which uses a laser sensor that is not in direct contact with the coal gangue flow. This structure replaces the existing atomizing nozzle switch that requires a mechanical structure to directly contact the coal gangue to be triggered. When the coal gangue flow flows through, the laser sensor switches, and then controls the opening and closing of the solenoid valve to realize the dust reduction spraying operation on the coal gangue flow, avoiding the problem of arranging a mechanical trigger mechanism in an environment where the coal gangue flow flows, which is cumbersome and easy to damage; the laser sensor has a certain height on the vertical frame. When the height of the coal gangue flow on the conveyor belt does not reach the height of the laser sensor, it will not be triggered, and the atomizing nozzle will not be able to spray and reduce dust, affecting the effect of spraying and reducing dust.

[0004] Therefore, it is necessary to design a coal dust spraying dust reduction device for mining that is linked with the conveyor belt to ensure the dust reduction effect to solve the current technical problems. Summary of the Invention

[0005] In view of the deficiencies in the prior art, the utility model provides a coal dust spraying and dust reduction device for mining which is controlled in linkage with a conveyor belt to ensure a dust reduction effect.

[0006] The technical solution of the utility model is: a coal dust spraying and dust suppression device for coal mining, comprising brackets fixedly arranged on both sides of a frame at the output end of the conveyor belt, a horizontal plate fixedly arranged between the top ends of the two brackets, a spray pipe arranged below the horizontal plate, and spray heads evenly arranged at the bottom of the spray pipe; a water supply component is connected to the spray pipe through a pipeline, and the water supply component is electrically connected to a controller, and the controller is used to control the water supply component to supply water to the spray pipe or stop supplying water; the controller is electrically connected to a relay that controls the start and stop of the conveyor belt, and is used to collect the on-off signal of the conveyor belt.

[0007] The water supply assembly has a water tank, a filter is connected to the water tank through a pipeline, the filter is connected to a pressure pump through a pipeline, the output end of the pressure pump is connected to the spray pipe; the controller is electrically connected to the pressure pump.

[0008] The horizontal plate is provided with a lifting and adjusting mechanism, and the lifting and adjusting mechanism is used to adjust the height of the spray pipe.

[0009] The spray pipe is provided with a cross bar, which is vertically slidably connected to the cross plate; the lifting adjustment mechanism has an adjusting screw rotatably arranged above the cross bar, the adjusting screw is threadedly connected to the cross plate, and the top of the adjusting screw is provided with a handle.

[0010] A guide rod parallel to the adjusting screw is provided above the cross bar, the guide rod is slidably connected to the cross plate, and a limiting plate is provided at the top end of the guide rod.

[0011] The bottom ends of the guide rod and the adjusting screw are fixedly provided with a connecting seat, the cross bar is rotatably arranged inside the connecting seat, one side of the connecting seat is threadedly assembled with a locking bolt, and the end of the locking bolt is against one side of the cross bar.

[0012] The adjusting screw is equipped with a locking nut, and the locking nut abuts against the top of the transverse plate.

[0013] The spray pipe is U-shaped, one end of the spray pipe is closed, and the other end of the spray pipe is provided with a pipe joint.

[0014] Beneficial effects of the utility model:

[0015] (1) In the present invention, the water supply component is linked to the conveyor belt for dust reduction. When the conveyor belt is running, the water supply component sprays and reduces dust. When the conveyor belt stops, the water supply component stops spraying and reducing dust after a delay. The water supply component is not affected by the height of the coal gangue flow on the conveyor belt, thereby ensuring the dust reduction effect.

[0016] (2) The spray pipe is installed on the top of both sides of the conveyor belt output end frame through the combination of vertical frames and horizontal plates, which is convenient for the modification of the existing conveyor belt. Spray heads are evenly arranged at the bottom of the spray pipe. When spraying, the water mist covers a large area, thereby improving the dust reduction effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Fig. 1 This is one of the structural schematic diagrams of the coal dust spraying and dust suppression device for coal mining in the utility model.

[0018] Fig. 2 This is the second structural schematic diagram of the coal dust spraying and dust suppression device for coal mining in the utility model.

[0019] Fig. 3 This is a schematic diagram of the connection between the water supply component, controller and spray pipe in the utility model. DETAILED DESCRIPTION

[0020] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. The description of the exemplary embodiments is merely illustrative and does not constitute any limitation on the present invention and its application or use. The present invention can be implemented in many different forms and is not limited to the embodiments described herein. These embodiments are provided to make the present invention thorough and complete and to fully convey the scope of the present invention to those skilled in the art. It should be noted that unless otherwise specifically stated, the relative arrangement of the components and steps, the composition of the materials, the numerical expressions and the numerical values ​​set forth in these embodiments should be interpreted as being merely exemplary and not as limiting.

[0021] The terms "first," "second," and similar terms used in this disclosure do not indicate any order, quantity, or importance, but are simply used to distinguish different parts. Terms such as "include" or "comprising" mean that the elements preceding the term include the elements listed after the term, and do not exclude the possibility of also including other elements. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0022] like Figs. 1 to 3 As shown, the coal dust spraying and dust suppression device for coal mining includes a bracket 2 fixedly arranged on both sides of the frame at the output end of the conveyor belt, a horizontal plate 3 is fixedly arranged between the tops of the two brackets 2, a spray pipe 1 is arranged below the horizontal plate 3, and spray heads 11 are evenly arranged at the bottom of the spray pipe 1; the spray pipe 1 is connected to a water supply component 8 through a pipeline, and the water supply component 8 is electrically connected to a controller 7, and the controller 7 is used to control the water supply component 8 to supply water to the spray pipe 1 or stop supplying water; the controller 7 is electrically connected to the relay that controls the start and stop of the conveyor belt, and is used to collect the on-off signal of the conveyor belt; in this embodiment, after receiving the power-on signal of the conveyor belt, the controller 7 controls the water supply component 8 to supply water to the spray pipe 1, so that the spray head 11 below the spray pipe 1 can generate water mist. , for spraying dust reduction; when the conveyor belt is powered off and stops, the controller 7 no longer receives the power-on signal for the conveyor belt to be powered on. At this time, the controller 7 delays for a period of time and controls the water supply component 8 to stop supplying water to the spray pipe 1, and the spray head 11 under the spray pipe 1 no longer produces water mist; the water supply component 8 is linked with the conveyor belt to control spraying and dust reduction when the conveyor belt is running, and stops spraying and dust reduction after a delay when the conveyor belt stops, which is not affected by the height of the coal gangue flow on the conveyor belt, thereby ensuring the dust reduction effect; the spray pipe 1 is mounted on the top of both sides of the frame at the output end of the conveyor belt through the vertical frame 2 and the horizontal plate 3, which is convenient for the modification of the existing conveyor belt. Spray heads 11 are evenly arranged at the bottom of the spray pipe 1. When spraying, the water mist covers a large area, thereby improving the dust reduction effect.

[0023] In the above embodiment, the controller 7 is electrically connected with a relay for controlling the start and stop of the conveying belt, and is used to collect the on-off electric signal of the conveying belt. Specifically, the current conveying belt controls the driving motor main circuit of the conveying belt to be connected to run through the relay. The input end of the controller 7 is connected to the control circuit of the relay. When the conveying belt is running, the normally open contact of the relay is closed, and a signal is sent to the input end of the controller 7 to realize the collection of the power-on signal of the conveying belt. When the conveying belt stops, the normally open contact of the relay is disconnected, and no signal is sent to the input end of the controller 7 to realize the collection of the power-off signal of the conveying belt.

[0024] In some embodiments, the water supply assembly 8 has a water tank 83 for storing water for spraying. The water tank 83 is connected to a filter 82 through a pipeline. The filter 82 filters impurities in the water to avoid clogging the spray head 11. The filter 82 is connected to a pressure pump 81 through a pipeline. The output end of the pressure pump 81 is connected to the spray pipe 1. The controller 7 is electrically connected with the pressure pump 81. The controller 7 controls the start of the pressure pump 81 through a relay.

[0025] In some embodiments, the horizontal plate 3 is provided with a lifting adjusting mechanism 4 for adjusting the height of the spray pipe 1. The height of the spray pipe 1 can be adjusted as needed during use to meet different spraying height requirements.

[0026] In some embodiments, the spray pipe 1 is provided with a cross rod 13 which is vertically and slidably connected with the horizontal plate 3. The lifting adjusting mechanism 4 has an adjusting screw 41 which is rotatably arranged above the cross rod 13. The adjusting screw 41 is threadedly connected with the horizontal plate 3. The top end of the adjusting screw 41 has a handle 44. The adjusting screw 41 is rotated by the handle 44. The threaded structure between the adjusting screw 41 and the horizontal plate 3 drives the adjusting screw 41 to move up and down, thereby driving the cross rod 13 and the spray pipe 1 to move up and down, and realizing the height adjustment of the spray pipe 1.

[0027] In some embodiments, the top of the cross rod 13 is provided with a guide rod 42 which is parallel to the adjusting screw 41. The guide rod 42 is slidably connected with the horizontal plate 3. The top end of the guide rod 42 has a limiting plate 43.

[0028] The cross rod 13 is slidably connected with the horizontal plate 3 through the guide rod 42, realizing the vertical sliding connection between the cross rod 13 and the horizontal plate 3. The limiting plate 43 can prevent the guide rod 42 from sliding off the horizontal plate 3.

[0029] In some embodiments, the bottom end of the guide rod 42 and the adjusting screw 41 are fixedly provided with a connecting seat 5, the cross rod 13 is rotatably arranged in the connecting seat 5, one side of the connecting seat 5 is threadedly provided with a locking bolt 6, the end of the locking bolt 6 abuts against one side of the cross rod 13; the end of the locking bolt 6 is separated from one side of the cross rod 13, the cross rod 13 can rotate in the connecting seat 5, the angle of the spray pipe 1 is adjusted, after the angle of the spray pipe 1 is adjusted, the end of the locking bolt 6 abuts against one side of the cross rod 13, the spray pipe 1 and the connecting seat 5 are locked, and the spray angle is kept unchanged.

[0030] In some embodiments, the adjusting screw 41 is provided with a locking nut 45, the locking nut 45 abuts against the top of the horizontal plate 3, after the height of the spray pipe 1 is adjusted, the locking nut 45 abuts against the top of the horizontal plate 3, the adjusting screw 41 and the horizontal plate 3 are locked, and the height of the spray pipe 1 is fixed.

[0031] In some embodiments, the spray pipe 1 is in a U shape, one end of the spray pipe 1 is closed, and the other end of the spray pipe 1 is provided with a pipe joint 12.

[0032] So far, the embodiments of the utility model have been described in detail. In order to avoid shielding the concept of the utility model, some details known in the art are not described. Those skilled in the art can fully understand how to implement the technical solutions disclosed herein according to the above description.

[0033] The above-described embodiments only express some implementation manners of the utility model, the description is more specific and detailed, but it cannot be understood as the limitation of the scope of the utility model patent. It should be pointed out that, for those skilled in the art, without departing from the concept of the utility model, a number of modifications and improvements can be made, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent should be subject to the appended claims.

Claims

1. A coal dust spraying and dust suppression device for coal mining, characterized by: It includes brackets fixedly arranged on both sides of the frame at the output end of the conveyor belt, a horizontal plate fixedly arranged between the top ends of the two brackets, a spray pipe arranged below the horizontal plate, and spray heads evenly arranged at the bottom of the spray pipe; The spray pipe is connected to a water supply assembly via a pipeline, and the water supply assembly is electrically connected to a controller, and the controller is used to control the water supply assembly to supply water to the spray pipe or stop supplying water; The controller is electrically connected to a relay that controls the start and stop of the conveyor belt, and is used to collect the on and off power signals of the conveyor belt.

2. The coal dust spraying and dust suppression device for coal mining according to claim 1, characterized in that: The water supply assembly comprises a water tank, a filter is connected to the water tank via a pipeline, the filter is connected to a pressure pump via a pipeline, and the output end of the pressure pump is connected to the spray pipe; The controller is electrically connected to the pressure pump.

3. The coal dust spraying and dust suppression device for coal mining according to claim 1, characterized in that: The horizontal plate is provided with a lifting and adjusting mechanism, and the lifting and adjusting mechanism is used to adjust the height of the spray pipe.

4. The coal dust spraying and dust suppression device for coal mining according to claim 3, characterized in that: The spray pipe is provided with a cross bar, which is vertically slidably connected to the cross plate; the lifting adjustment mechanism has an adjusting screw rotatably arranged above the cross bar, the adjusting screw is threadedly connected to the cross plate, and the top of the adjusting screw is provided with a handle.

5. The coal dust spraying and dust suppression device for coal mining according to claim 4, characterized in that: A guide rod parallel to the adjusting screw is provided above the cross bar, the guide rod is slidably connected to the cross plate, and a limiting plate is provided at the top end of the guide rod.

6. The coal dust spraying and dust suppression device for coal mining according to claim 5, characterized in that: The bottom ends of the guide rod and the adjusting screw are fixedly provided with a connecting seat, the cross bar is rotatably arranged inside the connecting seat, one side of the connecting seat is threadedly assembled with a locking bolt, and the end of the locking bolt is against one side of the cross bar.

7. The coal dust spraying and dust suppression device for coal mining according to claim 4, characterized in that: The adjusting screw is equipped with a locking nut, and the locking nut abuts against the top of the transverse plate.

8. The coal dust spraying and dust suppression device for coal mining according to claim 1, characterized in that: The spray pipe is U-shaped, one end of the spray pipe is closed, and the other end of the spray pipe is provided with a pipe joint.

Images