Crushing device with dust falling structure for open pit coal mine

Abstract

The utility model discloses a crushing device with a dust falling structure for an open pit coal mine, which relates to the technical field of coal mines and comprises a box body, dust falling components are fixedly mounted on the left and right parts of the upper end of the box body, and a screening and collecting component is movably connected to the bottom of the inner wall of the box body. According to the crushing device with the dust falling structure for the open pit coal mine, water mist can be sprayed to the coal mine entering the feeding cover through the dust falling assembly, the surface of the coal mine can be wetted, and dust can be restrained when the coal mine is crushed. According to the assembly, dust falling can be achieved, the spraying head can be conveniently taken down for cleaning, an operator does not need to stretch the hand into the feeding cover to wash the spraying head, and practicability is high. And the crushed coal mine with the large size can be collected through the screening and collecting assembly, and secondary crushing is facilitated. According to the assembly, materials can be rapidly screened, the screened coal mine can be conveniently collected, an operator does not need to stop the machine for manual cleaning, and the coal mine crushing time is shortened.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of coal mine, especially relates to a crushing device with dust falling structure for open coal mine. BACKGROUND

[0002] Open mining is to remove the rock and covering above the coal seam, and make the coal exposed to the ground for mining, wherein the process of removing the soil and rock is called stripping, and the process of mining coal is called coal mining, open coal mining usually divides the minefield into several horizontal layers, and mines layer by layer from top to bottom, forming a ladder shape in space, which has good labor conditions and high safety, and is the coal mining method that China focuses on developing, many devices are needed in the process of coal mining, and the crushing device is one of them, and a dust falling structure is needed on the crushing device to prevent dust.

[0003] Chinese patent document CN220258164U discloses a crushing process structure of open coal mine crushing equipment, which is fixedly connected with a crushing roller on the surface of a rotating rod, and a power assembly is fixedly installed on the front side of a fixed box.

[0004] The existing technology has the following problems:

[0005] In the above structure, a large amount of dust is generated when the crushing roller crushes the coal mine, which can easily affect the surrounding environment if not handled in time. Secondly, although the filter screen can intercept the large coal blocks, it is troublesome for the workers to clean the filter screen when crushing a large amount of coal, and the machine needs to be stopped immediately for processing, which has poor practicability. INVENTION CONTENTS

[0006] The utility model provides a crushing device with dust falling structure for open coal mine to solve the problems in the above background technology.

[0007] To solve the above technical problems, the technical scheme adopted by the utility model is:

[0008] A crushing device with a dust suppression structure for open-pit coal mines comprises a box body, a feed cover is fixedly mounted on the middle portion of the upper end of the box body, dust suppression components are fixedly mounted on the left and right portions of the upper end of the box body, a crushing component is movably connected to the middle portion of the inner wall of the box body, and a screening and collecting component is movably connected to the bottom portion of the inner wall of the box body;

[0009] The dust reduction assembly includes a water tank to which water can be added, the lower end of the water tank is fixedly installed to the rear bottom of the box body, a water pump is fixedly installed on the rear top of the water tank, an atomizer is fixedly installed on the rear top of the box body, the output end of the water pump is fixedly connected to the input end of the atomizer, and the output end of the atomizer is fixedly installed with a U-shaped connecting pipe, and the left and right positions of the rear inner wall of the connecting pipe are rotatably connected to two spray pipes, and a number of linearly arranged mounting pipes are fixedly installed on opposite sides of the outer walls of the two spray pipes, and a number of adjacent mounting pipes are located at the left and right positions of the top of the feed hood, and a spray head is threadedly connected to the side where the outer walls of the adjacent mounting pipes are close to each other, and an adjustment reset mechanism is movably connected to the middle part of the side where the outer walls of the two spray pipes are away from each other;

[0010] The screening and collecting assembly includes a cam, the front bottom of the box body is rotatably connected to a rotating shaft that passes through the front part of the box body, the middle part of the outer wall of the rotating shaft is fixedly connected to the inner wall of the cam, the front part of the outer wall of the rotating shaft is fixedly connected to a driving mechanism, the right position of the front and rear parts of the inner wall of the box body is rotatably connected to the filter plate, the outer surface of the cam abuts against the middle part of the lower end of the filter plate, the left bottom of the box body is provided with a through groove that matches the filter plate, the front and rear positions of the lower left end of the filter plate are fixedly installed with a connecting frame, the left bottom of the box body is fixedly installed with a support frame, the front and rear parts of the upper end of the support frame are fixedly installed with springs, and the upper ends of the two springs are fixedly connected to the lower ends of the two connecting frames.

[0011] Preferably, the crushing assembly includes two crushing rollers, and the front and rear ends of the two crushing rollers are rotatably connected to the left and right positions of the middle part of the inner wall of the box body. The front parts of the two crushing rollers pass through the front part of the box body and are fixedly sleeved with gears. The outer surfaces of the two gears are meshed. A motor is fixedly installed at the right position of the top front side of the box body, and the output end of the motor is fixedly connected to the front of the right crushing roller.

[0012] Preferably, the adjustment and reset mechanism includes two rectangular sliding rods, the outer walls of the two sliding rods on the side away from each other are fixedly connected to the left and right parts of the upper end of the box body, the outer walls of the two sliding rods are slidably connected to sliders, the upper ends of the two sliders are rotatably connected to rotating rods, and the ends of the two rotating rods away from the two sliders are rotatably connected to the middle parts of the outer walls of the two spray pipes on the side away from each other.

[0013] Preferably, the outer walls of the two slide rods are each movably sleeved with an elastic member on one side away from each other.

[0014] Preferably, the driving mechanism comprises two pulleys, the inner walls of the two pulleys are fixedly connected to the front portion of the outer wall of the left crushing roller and the front portion of the outer wall of the rotating shaft, and the outer surfaces of the two pulleys are transmission-connected with belts.

[0015] Preferably, a mounting frame is fixedly mounted on the left bottom of the box body, a collecting box is slidably connected to the bottom of the inner wall of the mounting frame, and the collecting box is located below the filter plate.

[0016] Preferably, the bottom of the inner wall of the box is movably connected to an electric conveyor belt, which passes through the right part of the box and extends to the outside. A discharge trough matching the electric conveyor belt is provided at the bottom right side of the box, and the electric conveyor belt is located below the filter plate.

[0017] Due to the adoption of the above technical solution, the present invention has achieved the following technical advancements compared to the prior art:

[0018] 1. The utility model provides a crushing device with a dust suppression structure for open-pit coal mines. The device can spray water mist on the coal entering the feed hood through the cooperation between a water tank, a water pump, an atomizer, a connecting pipe, a spray pipe, a mounting pipe, a spray head and an adjustment and reset mechanism. It can not only moisten the surface of the coal, but also suppress dust during crushing. The water pump pumps the water in the water tank into the atomizer, and the atomizer atomizes the water flow and releases it into the connecting pipe. The mist enters the two spray pipes due to the pressure exerted by the atomizer itself, and then acts on the surface of the coal by several spray heads. Secondly, several spray heads are in contact with dust for a long time. In order to avoid clogging, the corresponding spray pipe can be rotated. The spray pipe will drive the several spray heads to rotate to an upward position, which is convenient for the operator to rotate and unscrew them in sequence. After cleaning the spray head, rotate the spray pipe and screw it back on. This rotation drives the corresponding rotating rod, which pushes the corresponding slider to slide within the rod and compress the corresponding elastic member. When the spray head is released, the elastic force of the elastic member resets the slider and rotates the spray head to its initial position. This structure not only reduces dust but also facilitates removal and cleaning of the spray head, eliminating the need for the operator to reach into the feed hood to rinse the spray head, making it highly practical.

[0019] 2. The utility model provides a crushing device with a dust reduction structure for open-pit coal mines. Through the coordination of a cam, a rotating shaft, a driving mechanism, a filter plate, a connecting frame, a spring, a collection box and an electric transmission belt, the crushed coal with a larger volume can be collected for secondary crushing. When the motor is started, the two pulleys rotate synchronously through the transmission of the belt. The rotating shaft drives the cam to rotate and continuously squeeze the filter plate. The two springs provide a reset force for the filter plate to ensure that the filter plate can continue to vibrate. Larger coal will slide out of the box along the inclined filter plate and fall into the collection box. This structure can not only quickly screen the material, but also facilitate the collection of the screened coal. There is no need for the operator to stop the machine for manual cleaning, which reduces the time of coal crushing. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the overall front structure of the utility model;

[0021] Figure 2 This is a schematic diagram of the overall rear view structure of the utility model;

[0022] Figure 3 This is a schematic diagram of the overall cross-sectional structure of the utility model;

[0023] Figure 4 This is a schematic diagram of the structure of the dust suppression component of the utility model (1);

[0024] Figure 5 This is a schematic diagram of the dust suppression component structure of the utility model (II);

[0025] Figure 6 This is a partial enlarged schematic diagram of point A of the present utility model;

[0026] Figure 7 This is a schematic structural diagram of the screening and collecting component of the present utility model.

[0027] In the figure: 1. Box body; 2. Dust reduction component; 3. Screening and collecting component; 4. Crushing component; 5. Feed hood; 21. Water tank; 22. Water pump; 23. Atomizer; 24. Connecting pipe; 25. Spray pipe; 26. Mounting pipe; 27. Spray head; 28. Adjustment and reset mechanism; 281. Slide bar; 282. Slider; 283. Rotating rod; 31. Cam; 32. Rotating shaft; 33. Driving mechanism; 34. Filter plate; 35. Connecting frame; 36. Spring; 37. Collecting box; 38. Electric transmission belt; 331. Pulley; 332. Belt; 41. Crushing roller; 42. Gear; 43. Motor. DETAILED DESCRIPTION

[0028] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0029] like Figure 1 and Figure 7 As shown, a crushing device with a dust suppression structure for open-pit coal mines includes a box body 1, a feed cover 5 is fixedly installed in the middle of the upper end of the box body 1, dust suppression components 2 are fixedly installed on the left and right parts of the upper end of the box body 1, a crushing component 4 is movably connected to the middle part of the inner wall of the box body 1, and a screening and collection component 3 is movably connected to the bottom of the inner wall of the box body 1;

[0030] The dust reduction assembly 2 includes a water tank 21 to which water can be added. The lower end of the water tank 21 is fixedly installed on the rear bottom of the box body 1, and a water pump 22 is fixedly installed on the rear top of the water tank 21. An atomizer 23 is fixedly installed on the rear top of the box body 1, and the output end of the water pump 22 is fixedly connected to the input end of the atomizer 23. The output end of the atomizer 23 is fixedly installed with a U-shaped connecting pipe 24, and the left and right positions of the rear inner wall of the connecting pipe 24 are rotatably connected to two spray pipes 25. A plurality of linearly arranged mounting pipes 26 are fixedly installed on opposite sides of the outer walls of the two spray pipes 25, and a plurality of adjacent mounting pipes 26 are located at the left and right positions of the top of the feed hood 5. A spray head 27 is threadedly connected to the side of the outer walls of the adjacent mounting pipes 26 that are close to each other, and an adjustment reset mechanism 28 is movably connected to the middle part of the side of the outer walls of the two spray pipes 25 that are away from each other;

[0031] The screening and collecting assembly 3 includes a cam 31. The front bottom of the box body 1 is rotatably connected to a rotating shaft 32 that passes through the front part of the box body 1. The middle part of the outer wall of the rotating shaft 32 is fixedly connected to the inner wall of the cam 31. The front part of the outer wall of the rotating shaft 32 is fixedly connected to a driving mechanism 33. The right position of the front and rear parts of the inner wall of the box body 1 is rotatably connected to the filter plate 34. The outer surface of the cam 31 abuts against the middle part of the lower end of the filter plate 34. A through groove for matching the filter plate 34 is provided at the bottom left side of the box body 1. A connecting frame 35 is fixedly installed at the front and rear positions of the lower left end of the filter plate 34. A support frame is fixedly installed at the bottom left side of the box body 1. Springs 36 are fixedly installed at the front and rear parts of the upper end of the support frame. The upper ends of the two springs 36 are fixedly connected to the lower ends of the two connecting frames 35.

[0032] The dust suppression assembly sprays water mist onto the coal entering the feed hood 5, not only moistening its surface but also suppressing dust as it breaks down. A water pump 22 pumps water from the water tank 21 into the atomizer 23, which atomizes the water and releases it into the connecting pipe 24. Pressure from the atomizer 23 forces the mist into two spray pipes 25, where it is then applied to the coal surface by several spray heads 27. Furthermore, to prevent clogging of the spray heads 27, which are in constant contact with dust, the corresponding spray pipes 25 can be rotated. This in turn drives the spray heads 27 to an upward position, making it easier for the operator to remove them one by one. After the spray head 27 is cleaned, the rotating spray pipe 25 is screwed on. The rotation of the spray pipe 25 drives the corresponding rotating rod 283, which pushes the corresponding slider 282 to slide within the slide bar 281 and compress the corresponding elastic member. After the spray pipe 25 is released, the elastic force of the elastic member resets the slider 282 and rotates the spray pipe 25 to its initial position. This assembly not only reduces dust but also facilitates the removal and cleaning of the spray head 27, eliminating the need for the operator to reach into the feed hood 5 to rinse the spray head 27, making it highly practical. The screening and collection assembly 3 can collect larger coal after crushing, facilitating secondary crushing. When the motor 43 is started, the two pulleys 331 rotate synchronously via the transmission of the belt 332. The rotating shaft 32 drives the cam 31 to rotate, causing it to continuously compress the filter plate 34. Two springs provide a reset force for the filter plate 34, ensuring its continuous vibration. Larger coal will slide out of the box 1 along the inclined filter plate 34 and fall into the collection box 37. This component can not only quickly screen the material, but also facilitate the collection of the screened coal without the operator having to stop the machine for manual cleaning, thus reducing the time for coal crushing.

[0033] like Figure 3 and Figure 7 As shown, the crushing assembly 4 includes two crushing rollers 41, and the front and rear ends of the two crushing rollers 41 are rotatably connected to the left and right positions of the middle part of the inner wall of the box body 1. The front parts of the two crushing rollers 41 pass through the front part of the box body 1 and are fixedly sleeved with gears 42. The outer surfaces of the two gears 42 are meshed. A motor 43 is fixedly installed at the right position of the top front side of the box body 1, and the output end of the motor 43 is fixedly connected to the front of the right crushing roller 41.

[0034] The two crushing rollers 41 are engaged with each other through the gears 42 to realize relative rotation and crush the coal. The motor 43 provides power for the crushing rollers 41 .

[0035] like Figure 5As shown, the adjustment and reset mechanism 28 includes two rectangular slide bars 281, and the sides of the outer walls of the two slide bars 281 that are away from each other are fixedly connected to the left and right parts of the upper end of the box body 1. The outer walls of the two slide bars 281 are slidably connected to the sliders 282, and the upper ends of the two sliders 282 are rotatably connected to the rotating rods 283. The ends of the two rotating rods 283 that are away from the two sliders 282 are rotatably connected to the middle parts of the sides of the outer walls of the two spray pipes 25 that are away from each other.

[0036] When the operator needs to clean the spray heads 27, he can rotate the spray pipe 25 so that several spray heads 27 face upward, making it easier for the operator to rotate and unscrew the several spray heads 27 in sequence. The rotation of the spray pipe 25 will drive the rotating rod 283 to rotate, and the rotating rod 283 will push the slider 282 to move and squeeze the elastic member. After the spray pipe 25 is released, it will be reset due to the elastic force of the elastic member.

[0037] like Figure 5 As shown, elastic members are movably sleeved on the sides of the outer walls of the two sliding rods 281 that are away from each other.

[0038] The two elastic members are both reset springs and both play a reset role.

[0039] like Figure 3 and Figure 7 As shown, the driving mechanism 33 includes two pulleys 331 , the inner walls of the two pulleys 331 are fixedly connected to the front outer wall of the left crushing roller 41 and the front outer wall of the rotating shaft 32 , and the outer surfaces of the two pulleys 331 are transmission-connected with belts 332 .

[0040] When the motor 43 is started, the two pulleys 331 rotate synchronously through the transmission of the belt 332 , and the rotating shaft 32 drives the cam 31 to rotate and continuously squeeze the filter plate 34 .

[0041] like Figure 2 and Figure 3 As shown, a mounting frame is fixedly installed on the left bottom of the box body 1, and a collection box 37 is slidably connected to the bottom of the inner wall of the mounting frame. The collection box 37 is located below the filter plate 34.

[0042] The filter plate 34 is tilted so that larger coal ore will roll into the collection box 37 .

[0043] like Figure 2 and Figure 3 As shown, the bottom of the inner wall of the box body 1 is movably connected with an electric conveyor belt 38, which passes through the right part of the box body 1 and extends to the outside. A discharge trough matching the electric conveyor belt 38 is opened at the bottom of the right side of the box body 1, and the electric conveyor belt 38 is located below the filter plate 34.

[0044] Small and qualified coal mines are transferred to the outside world along the electric conveyor belt 38. The electric conveyor belt 38 is an existing mechanism that is specifically used to transfer materials and is not described in detail.

[0045] The working principle of this utility model is as follows: Coal enters the housing 1 from above through the feed hood 5. The motor 43 is activated, and its output drives the right crushing roller 41 to rotate. The two crushing rollers 41 rotate relative to each other due to the meshing of two gears 42, thereby crushing the coal. Simultaneously, the water pump 22 is activated, and its output pumps water from the water tank 21 into the atomizer 23. The atomizer 23 atomizes the water and releases it into the connecting pipe 24. The mist, due to the pressure exerted by the atomizer 23 itself, enters the two spray pipes 25. Subsequently, it is applied to the coal surface by several spray heads 27. This process effectively suppresses dust.

[0046] The crushed coal falls onto the inclined filter plate 34, which filters the coal and causes larger pieces of coal to roll into a collection box 37. Simultaneously, the left crushing roller 41 rotates the front pulley 331. The two pulleys 331 rotate synchronously via the transmission of the belt 332. The rotating shaft 32 drives the cam 31, which continuously squeezes the filter plate 34. Two springs provide a reset force for the filter plate 34, ensuring its continuous vibration and improving screening efficiency. The remaining qualified, smaller coal falls onto the motorized conveyor belt 38, which automatically transfers it to the outside world.

[0047] Secondly, several spray heads 27 are in constant contact with dust. To prevent them from clogging, the corresponding spray pipes 25 can be rotated. This will drive the spray heads 27 to an upward position, making it easier for the operator to remove them one by one. After cleaning the spray heads 27, the spray pipes 25 are rotated and screwed back on. This rotation of the spray pipes 25 drives the corresponding rotating rods 283, which push the corresponding sliders 282 to slide within the slide bar 281 and compress the corresponding elastic members. After releasing the spray pipes 25, the elastic force of the elastic members resets the sliders 282 and rotates the spray pipes 25 to their initial positions. This dust reduction assembly 2 not only reduces dust but also facilitates the removal and cleaning of the spray heads 27, eliminating the need for the operator to reach into the feed hood 5 to rinse the spray heads 27, making it highly practical. Furthermore, when removing and cleaning several spray heads 27, the two spray pipes 25 rotate in opposite directions.

[0048] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in this invention is defined by the appended claims and their equivalents.

Claims

1. A crushing device with a dust reduction structure for open-pit coal mines, comprising a housing (1), characterized in that: A feed cover (5) is fixedly mounted on the middle portion of the upper end of the box (1), dust suppression components (2) are fixedly mounted on the left and right portions of the upper end of the box (1), a crushing component (4) is movably connected to the middle portion of the inner wall of the box (1), and a screening and collecting component (3) is movably connected to the bottom portion of the inner wall of the box (1); The dust suppression component (2) comprises a water tank (21) to which water can be added, the lower end of the water tank (21) is fixedly mounted on the bottom of the rear side of the box body (1), a water pump (22) is fixedly mounted on the top of the rear side of the water tank (21), an atomizer (23) is fixedly mounted on the top of the rear side of the box body (1), the output end of the water pump (22) is fixedly connected to the input end of the atomizer (23), the output end of the atomizer (23) is fixedly mounted with a U-shaped connecting pipe (24), the rear end of the connecting pipe (24) is fixedly mounted with a U-shaped connecting pipe (24), and the rear end of the connecting pipe (24) is fixedly mounted with a U-shaped connecting pipe (24). Two spray pipes (25) are rotatably connected to the left and right positions of the inner wall. A plurality of linearly arranged mounting pipes (26) are fixedly mounted on opposite sides of the outer walls of the two spray pipes (25). A plurality of adjacent mounting pipes (26) are located on the left and right positions of the top of the feed cover (5). A spray head (27) is threadedly connected to the sides of the outer walls of the adjacent mounting pipes (26) that are close to each other. An adjusting reset mechanism (28) is movably connected to the middle of the sides of the outer walls of the two spray pipes (25) that are away from each other. The screening and collecting assembly (3) comprises a cam (31), the front bottom of the box body (1) is rotatably connected to a rotating shaft (32) that passes through the front part of the box body (1), the middle part of the outer wall of the rotating shaft (32) is fixedly connected to the inner wall of the cam (31), the front part of the outer wall of the rotating shaft (32) is fixedly connected to a driving mechanism (33), the right position of the front and rear parts of the inner wall of the box body (1) is rotatably connected to a filter plate (34), the outer surface of the cam (31) abuts against the middle part of the lower end of the filter plate (34), the left bottom of the box body (1) is provided with a through groove for matching the filter plate (34), the front and rear positions of the lower left part of the filter plate (34) are fixedly installed with a connecting frame (35), the left bottom of the box body (1) is fixedly installed with a support frame, the front and rear parts of the upper end of the support frame are fixedly installed with springs (36), and the upper ends of the two springs (36) are fixedly connected to the lower ends of the two connecting frames (35).

2. The crushing device with a dust reduction structure for open-pit coal mines according to claim 1, characterized in that: The crushing assembly (4) comprises two crushing rollers (41), the front and rear ends of the two crushing rollers (41) are rotatably connected to the left and right positions of the middle part of the inner wall of the box body (1), the front parts of the two crushing rollers (41) pass through the front part of the box body (1) and are fixedly sleeved with gears (42), the outer surfaces of the two gears (42) are meshed, and a motor (43) is fixedly installed at the right position of the top of the front side of the box body (1), and the output end of the motor (43) is fixedly connected to the front part of the right crushing roller (41).

3. The crushing device with a dust reduction structure for open-pit coal mines according to claim 1, characterized in that: The adjustment and reset mechanism (28) comprises two rectangular slide bars (281), the outer walls of the two slide bars (281) being fixedly connected to the left and right parts of the upper end of the box body (1) on the sides away from each other, the outer walls of the two slide bars (281) being slidably connected to sliders (282), the upper ends of the two sliders (282) being rotatably connected to rotating rods (283), and the ends of the two rotating rods (283) being away from the two sliders (282) being rotatably connected to the middle parts of the outer walls of the two spray pipes (25) on the sides away from each other.

4. The crushing device with a dust reduction structure for open-pit coal mines according to claim 3, characterized in that: The outer walls of the two slide bars (281) are both movably sleeved with elastic members on one side away from each other.

5. The crushing device with a dust suppression structure for open-pit coal mines according to claim 1, characterized in that: The driving mechanism (33) comprises two pulleys (331), the inner walls of the two pulleys (331) are fixedly connected to the front of the outer wall of the left crushing roller (41) and the front of the outer wall of the rotating shaft (32), and the outer surfaces of the two pulleys (331) are transmission-connected with a belt (332).

6. The crushing device with a dust suppression structure for open-pit coal mines according to claim 1, characterized in that: A mounting frame is fixedly mounted on the left bottom of the box body (1), and a collecting box (37) is slidably connected to the bottom of the inner wall of the mounting frame. The collecting box (37) is located below the filter plate (34).

7. The crushing device with a dust suppression structure for open-pit coal mines according to claim 1, characterized in that: The bottom of the inner wall of the box body (1) is movably connected to an electric conveyor belt (38), which passes through the right part of the box body (1) and extends outside. A discharge trough matching the electric conveyor belt (38) is opened at the bottom of the right side of the box body (1), and the electric conveyor belt (38) is located below the filter plate (34).

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