A coal mine crushing device with a hierarchical crushing function

Abstract

The present invention relates to the technical field of coal mining equipment, and particularly relates to a coal mine crushing device with a grading and crushing function. A coal mine crushing device with a grading and crushing function includes a transport frame, a feeding shell is fixedly connected to the transport frame, a connecting shell is fixedly connected to the feeding shell, a crushing shell is rotatably connected to the connecting shell, a discharge shell is rotatably connected to the crushing shell, a protective shell is fixedly connected to the discharge shell through a mounting rod, a fixing frame is fixedly connected to the protective shell, a rotating shell is rotatably connected to the protective shell, a sleeve provided with a spline is spline-connected to the rotating shell, a conical shell is fixedly connected to the sleeve, a first crushing knife is fixedly connected to the conical shell and is axially equidistant and circumferentially uniformly distributed, and a second crushing knife is arranged in the crushing shell and is axially equidistant and circumferentially uniformly distributed. By the cooperation of the crushing shell and the conical shell, the present invention crushes the coal mine and diffuses it circumferentially, and simultaneously performs step-by-step crushing on the diffused coal mine, preventing the blockage of the coal mine and increasing the efficiency of coal mine crushing.

Description

Technical Field

[0001] The present invention relates to the technical field of coal mining equipment, and in particular to a coal mine crushing device with a grading and crushing function. Background Art

[0002] Coal mine crushing refers to the crushing of coal mines during the coal mining process, breaking large pieces of coal into small pieces of coal mines, which is an important link in coal mining and utilization. Crushing coal mines into small pieces helps to improve the combustion efficiency and transportation efficiency of coal.

[0003] In the prior art, for example, the patent with the publication number CN115318411B discloses a multi-layer reverse rotation shearing and crushing device at the front end of a mine shearer, which relates to the technical field of coal mining equipment and includes a reverse rotation crushing frame, a multi-layer reverse rotation crushing mechanism, an interactive shearing and auxiliary crushing mechanism, and an impact primary crushing mechanism. The multi-layer reverse rotation crushing mechanism is arranged on the inner wall of the reverse rotation crushing frame, the interactive shearing and auxiliary crushing mechanism is symmetrically arranged on the lower wall of the reverse rotation crushing frame, and the impact primary crushing mechanism is symmetrically slidably arranged on the opposite side walls of the reverse rotation crushing frame. Although this device uses the first rotating crushing ring, the second rotating crushing ring, the third rotating crushing ring, the fourth rotating crushing ring, and the fifth rotating crushing ring to cooperate for multi-layer reverse crushing of large pieces of coal mine stones, it still cannot solve the problem of accumulation during coal mine crushing. When crushing coal mines, if the coal mine falls above the first rotating crushing ring and the diameter of the coal mine is greater than the inner diameter of the first rotating crushing ring, and the reverse rotation crushing teeth of the second rotating crushing ring cannot contact the coal mine, it will cause the accumulation and blockage of the coal mine, thereby affecting the subsequent coal mine crushing work. Moreover, during the process of the coal mine falling from the fifth rotating crushing ring to the first rotating crushing ring, the movement path of the coal mine gradually deviates towards the center, resulting in the accumulation of the coal mine in the center and further increasing the risk of blockage. Summary of the Invention

[0004] The present invention provides a coal mine crushing device with a grading and crushing function that can adjust the discharge size to solve the above problems.

[0005] Technical solution: A coal mine crushing device with a grading crushing function, including a transport frame, a feeding shell is fixedly connected to the transport frame, a connecting shell is fixedly connected to the feeding shell, a crushing shell is rotatably connected to the connecting shell, an outlet shell is rotatably connected to the crushing shell, the outlet shell is fixedly connected to a protective shell through a mounting rod, a fixing frame is fixedly connected to the protective shell, a rotating shell is rotatably connected to the protective shell, a sleeve is splined to the rotating shell, a conical shell is fixedly connected to the sleeve, a first crushing knife is fixedly connected to the conical shell and is evenly distributed, a second crushing knife is evenly distributed on the crushing shell, a first motor is fixedly connected to the protective shell, an output shaft of the first motor is fixedly connected to a spline shaft that is splined to the conical shell, the outlet shell is fixedly connected to a first fixing ring that is fixedly connected to the fixing frame through a mounting rod, a second motor is fixedly connected to the first fixing ring, an output shaft of the second motor is in meshing transmission with the crushing shell through a gear, a screening adjustment mechanism is arranged on the transport frame, and an outlet adjustment mechanism is arranged on the protective shell.

[0006] More preferably, a symmetrically distributed baffle is rotatably connected inside the feeding shell, and a torsion spring is arranged between the baffle and the feeding shell to prevent slag from splashing when the coal is crushed.

[0007] More preferably, a discharge plate is rotatably connected to the protective shell, a torsion spring is arranged between the protective shell and the discharge plate, and the discharge plate is in limit rotational cooperation with the outlet shell.

[0008] More preferably, the screening adjustment mechanism includes symmetrically and evenly distributed sliders, the symmetrically and evenly distributed sliders are all slidably connected to the transport frame, a telescopic plate is arranged between adjacent sliders in the same axial direction, a screening roller is rotatably connected between the symmetrically distributed sliders, a screening roller is rotatably connected to the transport frame, adjacent screening rollers are driven by a belt pulley and a belt, the transport frame is fixedly connected to a third motor through a mounting frame, the transport frame is fixedly connected to a first electric push rod, the screening roller close to the first electric push rod is fixedly connected to the output shaft of the third motor, a telescopic end of the first electric push rod is fixedly connected to a fixing shell through a mounting plate, the fixing shell is slidably connected to the transport frame, a uniformly distributed tension pulley is rotatably connected to the fixing shell, a belt between adjacent screening rollers is in contact with the tension pulley, the transport frame is fixedly connected to a second electric push rod, a scissor-type telescopic frame is arranged on the slider evenly distributed away from the third motor, and a telescopic end of the second electric push rod is fixedly connected to the slider away from the feeding shell and close to the second electric push rod through a mounting plate.

[0009] More preferably, evenly distributed cams are arranged on the screening roller, and the deflection angles of adjacent cams differ by 180°.

[0010] More preferably, the discharge regulating mechanism includes a hydraulic push rod. The hydraulic push rod is fixedly connected to the protective shell. The telescopic end of the hydraulic push rod is rotatably connected to the sleeve through a mounting ring. The conical shell is fixedly connected with fixing plates evenly distributed in the circumferential direction. The fixing plates are slidably connected with symmetrically distributed sliding rods. A tension spring is arranged between the sliding rod and the adjacent fixing plate. The sliding rod is fixedly connected with a transmission rack. The fixing plate is rotatably connected with symmetrically distributed first rotating rods through a mounting frame. The first rotating rod is fixedly connected with a first gear. The first gear meshes with the adjacent transmission rack. The first rotating rod is fixedly connected with a second gear. The fixing plate is rotatably connected with symmetrically distributed second rotating rods through a mounting frame. The second rotating rod is fixedly connected with a third gear. The second gear meshes with the adjacent third gear. The second rotating rod is fixedly connected with a first wire winding wheel. The first wire winding wheel is wound with a first traction rope. The conical shell is slidably connected with symmetrically and circumferentially evenly distributed third crushing knives. The first traction rope is fixedly connected with the adjacent third crushing knife. The conical shell is provided with an adjusting component for adjusting the extending length of the second crushing knife.

[0011] More preferably, the spline shaft is provided with grooves evenly distributed in the circumferential direction, and the grooves evenly distributed in the circumferential direction correspond to the sliding rods evenly distributed in the circumferential direction one by one.

[0012] More preferably, the distances from the first crushing knife and the third crushing knife to the inner wall of the crushing shell are equal.

[0013] More preferably, the adjusting component includes a rotating ring. The rotating ring is rotatably connected to the conical shell. The rotating ring is fixedly connected with circumferentially evenly distributed second traction ropes. The second traction ropes are slidably connected to the crushing shell. The crushing shell is fixedly connected with a second fixing ring. The second fixing ring is rotatably connected with circumferentially evenly distributed third rotating rods through a mounting frame. The third rotating rod is fixedly connected with a second wire winding wheel. The second wire winding wheel is fixedly connected with the adjacent second traction rope. The third rotating rod is fixedly connected with a fourth gear. The second fixing ring is rotatably connected with circumferentially evenly distributed fifth gears through a mounting frame. The fifth gear meshes with the adjacent fourth gear. The second crushing knives on the same axis are fixedly connected with a sliding frame. The sliding frame is provided with a rack. The rack of the sliding frame meshes with the adjacent fifth gear.

[0014] More preferably, it further includes a dust suppression component for collecting the pulverized coal generated during the crushing of coal. The dust suppression component is arranged in the discharge shell. The dust suppression component includes a dust collection shell. The dust collection shell is fixedly connected to the discharge shell. The discharge shell is provided with circumferentially evenly distributed filter plates. The dust collection shell is communicated with the discharge shell through the circumferentially evenly distributed filter plates. The dust collection shell is fixedly connected with a filter cloth. The fixed frame is fixedly connected with an air pump through a mounting frame. The air pump is communicated with the dust collection shell through a pipeline.

[0015] Compared with the prior art, the present invention has the following advantages: By the cooperation of the crushing shell and the conical shell, the coal mine is crushed and diffused circumferentially, and the diffused coal mine is gradually crushed at the same time, preventing the blockage of the coal mine and increasing the crushing efficiency of the coal mine. By the cooperation of the first crushing knife and the second crushing knife, the crushing method of the coal mine is changed, and the coal mine is adjusted from hard collision crushing to being torn by two opposite radial forces, reducing the dust generated during the crushing process of the coal mine. The cam on the screening roller drives the coal mine to vibrate up and down continuously and move forward, increasing the screening efficiency of the coal mine. By adjusting the gap between the crushing shell and the conical shell, the size of the coal mine can be flexibly adjusted while ensuring the crushing effect. The conical shell drives the second crushing knife to move inward, so that the distance between the second crushing knife and the conical shell is always a fixed value, ensuring the crushing effect of the second crushing knife on the coal mine when producing coal mines of different diameters. The air pump drives the air flow, forming two gas flow channels in the crushing shell and the discharge shell, and collecting the pulverized coal therein, reducing the dispersion amount of the external pulverized coal and protecting the health of the users. Description of the Drawings

[0016] Figure 1 is a three-dimensional structural schematic diagram of the present invention;

[0017] Figure 2 is a three-dimensional structural cross-sectional view of the positional relationship between the crushing shell and the connecting shell of the present invention;

[0018] Figure 3 is a three-dimensional structural cross-sectional view of the positional relationship between the first motor and the spline shaft of the present invention;

[0019] Figure 4 is a three-dimensional structural cross-sectional view of the screening adjustment mechanism of the present invention;

[0020] Figure 5 is a three-dimensional structural cross-sectional view of the positional relationship between the fixed shell and the tension pulley of the present invention;

[0021] Figure 6 is a three-dimensional structural cross-sectional view of the positional relationship between the crushing shell and the third rotating rod of the present invention;

[0022] Figure 7 is a three-dimensional structural cross-sectional view of the internal groove structure of the spline shaft of the present invention;

[0023] Figure 8 is a three-dimensional structural cross-sectional view of the discharge adjustment mechanism of the present invention;

[0024] Figure 9 is a three-dimensional structural cross-sectional view of the positional relationship between the second gear and the third gear of the present invention;

[0025] Figure 10 is a three-dimensional structural cross-sectional view of the positional relationship between the fifth gear and the sliding frame of the present invention.

[0026] Among them, the above-mentioned drawings include the following reference numerals: 1, transport rack; 2, blanking shell; 3, connecting shell; 4, crushing shell; 5, discharge shell; 6, protective shell; 7, fixing rack; 8, rotating shell; 9, sleeve; 10, conical shell; 11, first crushing knife; 12, second crushing knife; 13, first motor; 14, spline shaft; 15, first fixing ring; 16, second motor; 18, baffle plate; 19, discharge plate; 2001, slider; 2002, telescopic plate; 2003, screening roller; 2004, third motor; 2006, first electric push rod; 2007, fixing shell; 2008, tension pulley; 2009, second electric push rod; 2010, scissor-type telescopic rack; 2101, hydraulic push rod; 2102, fixing plate; 21021, first rotating rod; 21022, second rotating rod; 2103, sliding rod; 2104, transmission rack; 2105, first gear; 2106, second gear; 2107, third gear; 2108, first winding wheel; 2109, first traction rope; 2110, third crushing knife; 2111, rotating ring; 2112, second traction rope; 2113, second fixing ring; 21131, third rotating rod; 2114, second winding wheel; 2115, fourth gear; 2116, fifth gear; 2117, sliding rack; 2201, dust collection shell; 2202, filter plate; 2203, filter cloth; 2204, air pump. Detailed implementation manners

[0027] The embodiments of the present application will be described in detail below. The examples of the embodiments are shown in the drawings, in which the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions from beginning to end. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present application, and should not be construed as a limitation to the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative efforts belong to the scope of protection of the present application.

[0028] Embodiment 1: A coal mine crushing device with a classification crushing function, as Figures 1-3 shown, includes a transport rack 1. A blanking shell 2 is fixedly connected to the left side of the transport rack 1. A connecting shell 3 is fixedly connected to the lower side of the blanking shell 2. A crushing shell 4 is rotatably connected to the lower side of the connecting shell 3. A discharge shell 5 is rotatably connected to the lower side of the crushing shell 4. The discharge shell 5 is fixedly connected with a protective shell 6 for protecting the power source through a mounting rod. The protective shell 6 is fixedly connected with a fixing rack 7. A rotating shell 8 for assisting in blanking is rotatably connected to the upper side of the protective shell 6. The rotating shell 8 is spline-connected with a sleeve 9. The upper end of the sleeve 9 is fixedly connected with a conical shell 10, as Figure 3In the shown state, the diameter of the part of the crushing shell 4 below the conical shell 10 in the vertical direction becomes larger. The conical shell 10 is fixedly connected with first crushing knives 11 that are axially equidistant and circumferentially evenly distributed. The distances from the first crushing knives 11 that are axially equidistant and circumferentially evenly distributed to the crushing shell 4 are equal. The crushing shell 4 is provided with second crushing knives 12 that are axially equidistant and circumferentially evenly distributed. The distances from the second crushing knives 12 that are axially equidistant and circumferentially evenly distributed to the conical surface of the conical shell 10 are equal. The first crushing knives 11 that are axially equidistant and circumferentially evenly distributed and the second crushing knives 12 that are axially equidistant and circumferentially evenly distributed are staggered. The protective shell 6 is fixedly connected with a first motor 13. The output shaft of the first motor 13 is fixedly connected with a spline shaft 14 for power transmission. The spline shaft 14 is in spline connection with the conical shell 10. The outer side of the discharge shell 5 is fixedly connected with a first fixing ring 15. The first fixing ring 15 is fixedly connected with the fixing frame 7 through a mounting rod. The upper side of the first fixing ring 15 is fixedly connected with a second motor 16 for providing power to the crushing shell 4. The output shaft of the second motor 16 and the crushing shell 4 are in meshing transmission through gears. Two symmetrically distributed baffle plates 18 are rotatably connected in the feeding shell 2 to prevent slag from splashing when the coal mine is crushed. Torsion springs for driving them to reset are arranged between the two baffle plates 18 and the feeding shell 2. The outer side of the protective shell 6 is rotatably connected with a discharge plate 19. A torsion spring is arranged between the protective shell 6 and the discharge plate 19. The discharge plate 19 is in limit rotational cooperation with the discharge shell 5 to enable the discharge plate 19 to swing slightly at an angle. The transport rack 1 is provided with a screening adjustment mechanism for adjusting the screening range of the coal mine. The protective shell 6 is provided with a discharge adjustment mechanism for adjusting the size of the crushed coal mine.

[0029] Before crushing the coal mine, the user controls the discharge adjustment mechanism to adjust the size of the crushed coal mine. And throughout the process, the radial distance between the second crushing knife 12 and the conical shell 10 is always a fixed value. After the adjustment is completed, the user starts to perform the crushing treatment on the coal mine.

[0030] When using this device to crush the coal mine, the user first conveys the coal mine to the transport rack 1. Subsequently, the user adjusts the screening adjustment mechanism to screen out the large pieces of coal mine that need to be crushed. Subsequently, the large pieces of coal mine are transported to the upper side of the baffle plates 18. The large pieces of coal mine squeeze the two baffle plates 18 to swing downward and twist the torsion springs between the baffle plates 18 and the feeding shell 2 until the large pieces of coal mine move downward into the connecting shell 3. The torsion springs between the baffle plates 18 and the feeding shell 2 drive the baffle plates 18 to reset. At this time, the feeding step is completed.

[0031] During the process of feeding large pieces of coal mine, the user starts the first motor 13 and the second motor 16 at the same time. The output shaft of the first motor 13 drives the conical shell 10 to rotate clockwise through the spline shaft 14, and the conical shell 10 drives the first crushing knives 11 evenly distributed axially at equal intervals to rotate counterclockwise. The second motor 16 drives the crushing shell 4 to rotate clockwise through gear meshing, and the rotation of the crushing shell 4 drives the second crushing knives 12 evenly distributed axially at equal intervals to rotate clockwise. After the large pieces of coal mine move downward to the crushing shell 4, the large pieces of coal mine are first crushed into several medium-sized coal mines by the uppermost first crushing knife 11 and the uppermost second crushing knife 12, and then immediately fall into the gap between the crushing shell 4 and the conical shell 10.

[0032] As the coal mine gradually moves downward, the first crushing knife 11 and the second crushing knife 12 cooperate to cross-crush the coal mine, and the coal mine is crushed by two radial forces in opposite directions, and the diameter of the coal mine gradually becomes smaller until the coal mine moves out from the gap between the crushing shell 4 and the conical shell 10 and continues to move downward. Some of the crushed coal mines fall onto the upper inclined surface of the discharge shell 5. The conical shell 10 drives the discharge shell 5 to rotate through the sleeve 9 and throws out the coal mine falling onto the upper inclined surface of the discharge shell 5. Some of the coal mines fall onto the upper inclined surface of the discharge plate 19. The discharge plate 19 is inclined and a torsion spring is arranged between the discharge plate 19 and the protective shell 6. The speed of the coal mine falling on the right end of the inclined surface of the discharge plate 19 is greater than that of the coal mine falling on the left end of the inclined surface of the discharge plate 19, and the discharge plate 19 is rotationally and limit-fitted with the discharge shell 5. Therefore, the discharge plate 19 will continuously swing slightly during the coal mine discharging stage to prevent the coal mine from accumulating at the discharge port and causing blockage. Until the coal mine is completely crushed, the user stops the first motor 13 and the second motor 16. Through the cooperation of the crushing shell 4 and the conical shell 10, the coal mine is crushed and diffused circumferentially, and at the same time, the diffused coal mine is gradually crushed. While preventing the blockage of the coal mine, the crushing efficiency of the coal mine is increased. Through the cooperation of the first crushing knife 11 and the second crushing knife 12, the crushing method of the coal mine is changed, and the coal mine is adjusted from hard collision crushing to being torn by two radial forces in opposite directions, reducing the dust generated during the crushing process of the coal mine.

[0033] Example 2: On the basis of Example 1, as Figure 1 、 Figure 4 and Figure 5As shown in the figure, the screening adjustment mechanism includes symmetrically distributed sliders 2001 in the front and rear and evenly distributed. The symmetrically distributed sliders 2001 in the front and rear are all slidably connected to the inside of the transport frame 1. A telescopic plate 2002 is arranged between adjacent sliders 2001 in the left and right directions to block coal mines. A screening roller 2003 for screening coal mines is rotatably connected between the symmetrically distributed sliders 2001. The transport frame 1 is rotatably connected to the screening roller 2003. Uniformly distributed cams are arranged on the screening roller 2003, and the deflection angles of adjacent cams differ by 180° to enhance the screening effect of the screening roller 2003 on coal mines. Adjacent screening rollers 2003 are driven by pulleys and belts. A third motor 2004 is fixedly connected to the rear side of the transport frame 1 through a mounting bracket. A first electric push rod 2006 is fixedly connected to the rear side of the transport frame 1. The output shaft of the third motor 2004 is fixedly connected to the leftmost screening roller 2003. The transport frame 1 is rotatably connected to the leftmost screening roller 2003. The telescopic end of the first electric push rod 2006 is fixedly connected to a fixed shell 2007 through a mounting plate. The fixed shell 2007 is slidably connected to the rear side of the transport frame 1. Evenly distributed tension wheels 2008 are rotatably connected to the inside of the fixed shell 2007. The belt between adjacent screening rollers 2003 is in contact and cooperation with the tension wheels 2008. A second electric push rod 2009 is fixedly connected to the front side of the transport frame 1. A scissor-type telescopic frame 2010 is arranged on the front-side evenly distributed sliders 2001. The telescopic end of the second electric push rod 2009 is fixedly connected to the rightmost slider among the front-side evenly distributed sliders 2001 through a mounting plate.

[0034] As Figure 2 , Figure 3 and Figures 6-9As shown in the figure, the discharge regulating mechanism includes a hydraulic push rod 2101. The hydraulic push rod 2101 is fixedly connected to the protective shell 6. The telescopic end of the hydraulic push rod 2101 is rotatably connected to the lower end of the sleeve 9 through a mounting ring. Fixed plates 2102 evenly distributed circumferentially are fixedly connected to the inner side of the conical shell 10. Two sliding rods 2103 symmetrically distributed up and down are slidably connected to the fixed plates 2102. The spline shaft 14 is provided with grooves evenly distributed circumferentially, and the grooves evenly distributed circumferentially correspond to the sliding rods 2103 evenly distributed circumferentially one by one. A tension spring is arranged between the sliding rod 2103 and the adjacent fixed plate 2102. A transmission rack 2104 for transmitting power is fixedly connected to the sliding rod 2103. Two first rotating rods 21021 symmetrically distributed up and down are rotatably connected to the fixed plate 2102 through a mounting frame. First gears 2105 are fixedly connected to both of the two first rotating rods 21021. The first gears 2105 are meshed with the adjacent transmission racks 2104. Second gears 2106 are fixedly connected to both of the two first rotating rods 21021, and the number of teeth of the upper second gear 2106 is greater than that of the lower second gear 2106. Two second rotating rods 21022 symmetrically distributed up and down are rotatably connected to the fixed plate 2102 through a mounting frame. Third gears 2107 are fixedly connected to both of the two second rotating rods 21022, and the number of teeth of the upper third gear 2107 is less than that of the lower third gear 2107. The second gears 2106 are meshed with the adjacent third gears 2107. First winding wheels 2108 are fixedly connected to both of the two second rotating rods 21022. First traction ropes 2109 are wound around both of the two first winding wheels 2108. Third crushing knives 2110 symmetrically distributed up and down and evenly distributed circumferentially are slidably connected to the conical shell 10, and the length of the upper third crushing knife 2110 is greater than that of the lower third crushing knife 2110. The distances from the first crushing knife 11 and the third crushing knife 2110 to the inner wall of the crushing shell 4 are equal. The first traction ropes 2109 are fixedly connected to the adjacent third crushing knives 2110. The conical shell 10 is provided with an adjusting assembly for adjusting the extending length of the second crushing knife 12.

[0035] As Figures 6-10As shown in the figure, the adjusting assembly includes a rotating ring 2111. The rotating ring 2111 is rotatably connected to the lower side of the conical shell 10. A second traction rope 2112 evenly distributed circumferentially is fixedly connected to the lower side of the rotating ring 2111. The second traction rope 2112 is slidably connected to the crushing shell 4. A second fixing ring 2113 is fixedly connected to the outer side of the crushing shell 4. The second fixing ring 2113 is rotatably connected to a third rotating rod 21131 evenly distributed circumferentially through a mounting frame. A second winding wheel 2114 for transmitting power is fixedly connected to the third rotating rod 21131. The second winding wheel 2114 is fixedly connected to the adjacent second traction rope 2112, and the second traction rope 2112 is wound around the adjacent second winding wheel 2114. A fourth gear 2115 is fixedly connected to the third rotating rod 21131. The second fixing ring 2113 is rotatably connected to a fifth gear 2116 evenly distributed circumferentially through a mounting frame. The number of teeth of the fourth gear 2115 is less than that of the fifth gear 2116. The fifth gear 2116 meshes with the adjacent fourth gear 2115. A sliding frame 2117 is fixedly connected to the second crushing knife 12 in the same vertical direction. A rack meshing with the adjacent fifth gear 2116 is arranged on the lower side of the sliding frame 2117.

[0036] When the user needs to crush a larger coal mine, the user controls the telescopic end of the second electric push rod 2009 to extend. The telescopic end of the second electric push rod 2009 drives the slider 2001 on the right front side to move to the right. The rightmost front slider 2001 drives the front sliders 2001 to move to the right synchronously through the scissor-type telescopic frame 2010. And during this process, the increase in the distance between adjacent two sliders 2001 is equal. The front sliders 2001 respectively drive the adjacent screening rollers 2003 and the rear sliders 2001 to move to the right synchronously and equidistantly. During this process, the user simultaneously controls the telescopic end of the first electric push rod 2006 to retract. The telescopic end of the first electric push rod 2006 drives the evenly distributed tension wheels 2008 to move upward through the fixed shell 2007. And the length of the belt released by the tension wheels 2008 is equal to the increased distance of the screening gap between adjacent screening rollers 2003, so that the belt between adjacent screening rollers 2003 is always in a tensioned state until the distance of the screening gap between adjacent screening rollers 2003 reaches the screening requirement of the user. The user simultaneously stops the telescopic end of the second electric push rod 2009 and the telescopic end of the first electric push rod 2006. At this time, the adjustment is completed.

[0037] After the adjustment is completed, the user starts the third motor 2004. The third motor 2004 drives the leftmost screening roller 2003 to rotate through the output shaft. The leftmost screening roller 2003 drives the evenly distributed screening rollers 2003 on the right side to rotate synchronously through pulleys and belts. The screening rollers 2003 rotate and drive the coal mine to move to the left. The coal mine with a diameter smaller than the screening gap between adjacent screening rollers 2003 falls downward onto the transport rack 1 and is transported to other processing steps. The coal mine with a diameter larger than the screening gap between adjacent screening rollers 2003 moves to the left along with the evenly distributed screening rollers 2003 until it moves to the upper side of the baffle 18, and then the crushing step is carried out.

[0038] During the above screening process, if there is a large amount of coal mine on the screening roller 2003, the cam on the screening roller 2003 drives the coal mine to continuously shake up and down, so that the coal mine with a smaller diameter passes through the screening and falls onto the transport rack 1. The cam on the screening roller 2003 drives the coal mine to continuously vibrate up and down and move forward, increasing the screening efficiency of the coal mine.

[0039] Before crushing the coal mine, the user adjusts the size of the discharged coal mine after crushing according to their own needs. For example, Figure 3 as shown in the positional relationship between the crushing shell 4 and the conical shell 10, the coal mine produced at this time has the smallest diameter. If the user needs the diameter of the coal mine to be larger, the user controls the telescopic end of the hydraulic push rod 2101 to extend. The telescopic end of the hydraulic push rod 2101 drives the conical shell 10 to move downward through the sleeve 9. The conical shell 10 drives the evenly circumferentially distributed fixing plates 2102 to move downward. Taking one of the fixing plates 2102 as an example, the fixing plate 2102 drives the upper and lower sliding rods 2103 to move downward.

[0040] During the downward movement of the sliding rod 2103, the lower sliding rod 2103 first contacts the groove of the spline shaft 14, and the spline shaft 14 loses its limit on the sliding rod 2103. The tension spring between the fixed plate 2102 and the sliding rod 2103 drives the sliding rod 2103 to move into the groove of the spline shaft 14. The sliding rod 2103 drives the first rotating rod 21021 to rotate through the engagement of the transmission rack 2104 and the first gear 2105. The first rotating rod 21021 drives the second gear 2106 to rotate. The second gear 2106 meshes with the third gear 2107 and drives the second rotating rod 21022 to rotate. The second rotating rod 21022 drives the first wire winding wheel 2108 to rotate. The first wire winding wheel 2108 rotates and pulls the third crushing knife 2110 inward through the first towing rope 2109 until the sliding rod 2103 stops moving inward. At this time, the lowermost third crushing knife 2110 also retracts into the conical shell 10, and the upper third crushing knife 2110 moves to the position of the previous lower third crushing knife 2110. At this time, the discharge gap between the crushing shell 4 and the conical shell 10 increases. The user repeats the above crushing steps. Because the discharge gap between the crushing shell 4 and the conical shell 10 increases, the diameter of the produced coal mine also increases. By adjusting the gap between the crushing shell 4 and the conical shell 10, while ensuring the crushing effect, the size of the coal mine can be flexibly adjusted.

[0041] If the user still needs to produce a coal mine with a larger diameter, repeat the above steps to retract both the upper and lower third crushing knives 2110 into the conical shell 10. Due to the shape of the conical shell 10, the retraction distance of the upper third crushing knife 2110 is greater than that of the lower third crushing knife 2110. The distance difference between the two movements is adjusted by the transmission ratio of the second gear 2106 and the third gear 2107, that is, the transmission ratio of the upper second gear 2106 and the third gear 2107 is greater than that of the lower second gear 2106 and the third gear 2107.

[0042] During the downward movement of the conical shell 10, the conical shell 10 drives the circumferentially evenly distributed second towing ropes 2112 to move downward through the rotating ring 2111. The circumferentially evenly distributed second towing ropes 2112 drive the adjacent second wire winding wheels 2114 to rotate. Taking the leftmost second wire winding wheel 2114 as an example, the second wire winding wheel 2114 drives the third rotating rod 21131 to rotate. The third rotating rod 21131 drives the fifth gear 2116 to rotate through the engagement of the fourth gear 2115 and the fifth gear 2116. The fifth gear 2116 meshes with the rack of the sliding frame 2117 and drives the sliding frame 2117 and the evenly distributed second crushing knives 12 to move to the right. The conical shell 10 drives the second crushing knives 12 to move inward, so that the distance between the second crushing knives 12 and the conical shell 10 is always a fixed value, ensuring the crushing effect of the second crushing knives 12 on the coal mine when producing coal mines of different diameters.

[0043] Embodiment 3: Based on embodiment 2, Figures 1-3 As shown, it also includes a dust suppression component for collecting coal powder generated when crushing coal. The dust suppression component is arranged on the discharge shell 5. The dust suppression component includes a dust collecting shell 2201 for collecting coal powder. The dust collecting shell 2201 is fixedly connected to the outer side of the discharge shell 5. The discharge shell 5 is provided with filter plates 2202 evenly distributed in the circumference for intercepting coal with smaller mass. The dust collecting shell 2201 is connected to the discharge shell 5 through the filter plates 2202 evenly distributed in the circumference. The dust collecting shell 2201 is fixedly connected with a filter cloth 2203 for intercepting coal powder. The fixed frame 7 is fixedly connected with an air pump 2204 through the mounting frame. The air pump 2204 is connected with the dust collecting shell 2201 through a pipeline for guiding the gas flow.

[0044] In the process of crushing coal, coal dust is generated due to the impact of crushing and is scattered in the air. The user starts the air pump 2204, and the air pump 2204 draws the air in the dust collecting shell 2201 outward through the pipeline, so that the gas and coal dust in the crushing shell 4 are drawn outward through the filter plate 2202, and the coal with smaller mass is intercepted by the filter plate 2202 and falls downward to the discharge plate 19 for discharge, and the air above the barrier plate 18 flows downward through the through holes provided thereon, and the gas in the crushing shell 4 and the discharge shell 5 carries the coal dust through the filter plate 2202 to flow into the dust collecting shell 2201, and the discharge shell 5 The air on the lower side flows upward, forming two gas flow channels in the crushing shell 4 and the discharge shell 5. After the airflow carries the coal powder into the dust collecting shell 2201, the coal powder is intercepted by the filter cloth 2203 and accumulated in the dust collecting shell 2201 on the upper side of the filter cloth 2203 until the coal mine is crushed. The user stops the air pump 2204 and recycles the coal powder accumulated on the upper side of the filter cloth 2203. The air pump 2204 drives the wind flow to form two gas flow channels in the crushing shell 4 and the discharge shell 5, and collects the coal powder therein, thereby reducing the amount of external coal powder drifting and ensuring the health of the user.

[0045] The above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable people familiar with the technology to understand the content of the present invention and implement it accordingly, and they cannot be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be included in the protection scope of the present invention.

Claims

1. A coal mine crushing device with a hierarchical crushing function, characterized in that, It includes a transport frame (1), the transport frame (1) is fixedly connected with a blanking shell (2), the blanking shell (2) is fixedly connected with a connecting shell (3), the connecting shell (3) is rotatably connected with a crushing shell (4), the crushing shell (4) is rotatably connected with a discharge shell (5), the discharge shell (5) is fixedly connected with a protective shell (6) through a mounting rod, the protective shell (6) is fixedly connected with a fixing frame (7), the protective shell (6) is rotatably connected with a rotating shell (8), the rotating shell (8) is splined to a sleeve (9), the sleeve (9) is fixedly connected with a conical shell (10), the conical shell (10) is fixedly connected with evenly distributed first crushing knives (11), the crushing shell (4) is provided with evenly distributed second crushing knives (12), the protective shell (6) is fixedly connected with a first motor (13), the output shaft of the first motor (13) is fixedly connected with a spline shaft (14) that is splined to the conical shell (10), the discharge shell (5) is fixedly connected with a first fixing ring (15) that is fixedly connected with the fixing frame (7) through a mounting rod, the first fixing ring (15) is fixedly connected with a second motor (16), the output shaft of the second motor (16) is in meshing transmission with the crushing shell (4) through gears, the transport frame (1) is provided with a screening and adjusting mechanism, and the protective shell (6) is provided with a discharge adjusting mechanism; The discharge adjusting mechanism includes a hydraulic push rod (2101), the hydraulic push rod (2101) is fixedly connected to the protective shell (6), the telescopic end of the hydraulic push rod (2101) is rotatably connected to the sleeve (9) through a mounting ring, the conical shell (10) is fixedly connected with circumferentially evenly distributed fixing plates (2102), the fixing plates (2102) are slidably connected with symmetrically distributed sliding rods (2103), a tension spring is arranged between the sliding rod (2103) and the adjacent fixing plate (2102), the sliding rod (2103) is fixedly connected with a transmission rack (2104), the fixing plate (2102) is rotatably connected with symmetrically distributed first rotating rods (21021) through a mounting frame, the first rotating rod (21021) is fixedly connected with a first gear (2105), the first gear (2105) is meshed with the adjacent transmission rack (2104), the first rotating rod (21021) is fixedly connected with a second gear (2106), the fixing plate (2102) is rotatably connected with symmetrically distributed second rotating rods (21022) through a mounting frame, the second rotating rod (21022) is fixedly connected with a third gear (2107), the second gear (2106) is meshed with the adjacent third gear (2107), the second rotating rod (21022) is fixedly connected with a first winding wheel (2108), the first winding wheel (2108) is wound with a first traction rope (2109), the conical shell (10) is slidably connected with symmetrically and circumferentially evenly distributed third crushing knives (2110), the first traction rope (2109) is fixedly connected with the adjacent third crushing knife (2110), and the conical shell (10) is provided with an adjusting assembly for adjusting the extending length of the second crushing knife (12).

2. A coal mine crushing device with a hierarchical crushing function according to claim 1, characterized in that, Symmetrically distributed baffle plates (18) are rotatably connected in the blanking shell (2), and a torsion spring is arranged between the baffle plates (18) and the blanking shell (2) to prevent the slag from splashing when the coal is crushed.

3. A coal mine crushing device with a hierarchical crushing function according to claim 2, characterized in that, The protective shell (6) is rotatably connected to a discharge plate (19). A torsion spring is arranged between the protective shell (6) and the discharge plate (19). The discharge plate (19) is in limit rotational fit with the discharge shell (5).

4. A coal mine crushing device with a hierarchical crushing function according to claim 3, characterized in that, The screening adjustment mechanism includes symmetrically and evenly distributed sliders (2001). The symmetrically and evenly distributed sliders (2001) are all slidably connected to the transport frame (1). A telescopic plate (2002) is arranged between adjacent sliders (2001) in the same axial direction. A screening roller (2003) is rotatably connected between the symmetrically distributed sliders (2001). The transport frame (1) is rotatably connected to the screening roller (2003). Adjacent screening rollers (2003) are driven by a belt and pulley. The transport frame (1) is fixedly connected with a third motor (2004) through a mounting frame. The transport frame (1) is fixedly connected with a first electric push rod (2006). The screening roller (2003) close to the first electric push rod (2006) is fixedly connected to the output shaft of the third motor (2004). The telescopic end of the first electric push rod (2006) is fixedly connected with a fixed shell (2007) through a mounting plate. The fixed shell (2007) is slidably connected to the transport frame (1). The fixed shell (2007) is rotatably connected with evenly distributed tension wheels (2008). The belt between adjacent screening rollers (2003) is in contact and fit with the tension wheels (2008). The transport frame (1) is fixedly connected with a second electric push rod (2009). A scissor-type telescopic frame (2010) is arranged on the slider (2001) evenly distributed away from the third motor (2004). The telescopic end of the second electric push rod (2009) is fixedly connected with the slider (2001) that is away from the blanking shell (2) and close to the second electric push rod (2009) through a mounting plate.

5. The coal mine crushing device with a hierarchical crushing function according to claim 4, characterized in that, The screening roller (2003) is provided with evenly distributed cams, and the deflection angles of adjacent cams differ by 180°.

6. A coal mine crushing device with a hierarchical crushing function according to claim 5, characterized in that, The spline shaft (14) is provided with circumferentially evenly distributed grooves, and the circumferentially evenly distributed grooves correspond to the circumferentially evenly distributed sliding rods (2103) one by one.

7. A coal mine crushing device with a hierarchical crushing function according to claim 6, characterized in that, The distances from the first crushing knife (11) and the third crushing knife (2110) to the inner wall of the crushing shell (4) are equal.

8. A coal mine crushing device with a hierarchical crushing function according to claim 7, characterized in that, The adjusting assembly includes a rotating ring (2111), the rotating ring (2111) is rotatably connected to the conical shell (10), the rotating ring (2111) is fixedly connected with second traction ropes (2112) evenly distributed circumferentially, the second traction ropes (2112) are slidably connected to the crushing shell (4), the crushing shell (4) is fixedly connected with a second fixing ring (2113), the second fixing ring (2113) is rotatably connected with third rotating rods (21131) evenly distributed circumferentially through a mounting frame, the third rotating rods (21131) are fixedly connected with second winding wheels (2114), the second winding wheels (2114) are fixedly connected with the adjacent second traction ropes (2112), the third rotating rods (21131) are fixedly connected with fourth gears (2115), the second fixing ring (2113) is rotatably connected with fifth gears (2116) evenly distributed circumferentially through a mounting frame, the fifth gears (2116) are meshed with the adjacent fourth gears (2115), the second crushing knives (12) on the same axis are fixedly connected with sliding frames (2117), the sliding frames (2117) are provided with racks, and the racks of the sliding frames (2117) are meshed with the adjacent fifth gears (2116).

9. A coal mine crushing device with a hierarchical crushing function according to claim 8, characterized in that, It further includes a dust suppression assembly for collecting the pulverized coal generated during the crushing of coal. The dust suppression assembly is arranged on the discharge shell (5). The dust suppression assembly includes a dust collection shell (2201), the dust collection shell (2201) is fixedly connected to the discharge shell (5), the discharge shell (5) is provided with filter plates (2202) evenly distributed circumferentially, the dust collection shell (2201) is communicated with the discharge shell (5) through the filter plates (2202) evenly distributed circumferentially, the dust collection shell (2201) is fixedly connected with a filter cloth (2203), the fixed frame (7) is fixedly connected with an air pump (2204) through a mounting frame, and the air pump (2204) is communicated with the dust collection shell (2201) through a pipeline.

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