Crushing device on crusher for garden maintenance

Abstract

The crushing device comprises a mounting frame, a crushing unit, a suction fan and a material collecting box are mounted on the mounting frame, and the crushing unit comprises a first-stage crushing box, a second-stage crushing box, a third-stage crushing box, a first crushing roller, a second crushing roller, a third crushing roller, a first motor and a second motor. The two ends of the second-stage smashing box communicate with the first-stage smashing box and the third-stage smashing box correspondingly, the suction fan communicates with the third-stage smashing box and the material collecting box, the first smashing roller is rotationally connected into the first-stage smashing box and connected with the first motor, the second smashing roller is rotationally connected into the second-stage smashing box and connected with the second motor, and the diameter of the second smashing roller is gradually increased. And the third crushing roller is rotationally connected into the third-stage crushing box and is matched with the first crushing roller. The branch crushing device has the beneficial effects that dust cannot be generated during discharging, meanwhile, the defect caused by the increase of the humidity of crushed branch materials is avoided, branches can be crushed more finely, and the crushing effect is improved.

Description

Technical Field

[0001] The invention relates to the technical field of greening engineering, and more specifically, to a pulverizing device on a pulverizer for garden maintenance. Background Art

[0002] A branch crusher is a mechanical equipment that crushes garden waste such as branches and leaves into small pieces. In the process of maintaining trees in gardens and highway greening, it is usually necessary to prune branches. The pruned branches are crushed by a branch crusher and turned into branch fragments for recycling. The recycled branch fragments are further processed, such as compression and drying to make biomass fuel for combustion in biomass thermal power plants, mixing with other organic matter for composting to convert it into organic fertilizer, and high-temperature extrusion heating and other process treatments to make machine-made charcoal as an environmentally friendly fuel. The crushed material processed by the branch crusher is porous and relatively breathable, and can be used as a ground film in gardens and parks to maintain the water retention and heat preservation of the soil. It can also be added to the soil to improve soil structure and promote plant growth.

[0003] The existing branch crusher includes a feeding system, a crushing system, a discharge pipe and a walking structure. The hydraulic forced feeding roller in the feeding system can force branches and twigs of uneven thickness into the crushing chamber, thereby reducing the intensity of manual work. The knife roller (also called the rotor) in the crushing system is fixed in the center of the crushing chamber through the central axis, and is powered by a diesel engine or an electric motor through a belt. The blades are evenly attached to the knife roller. As the knife roller rotates at a high speed, the incoming material is cut and crushed and discharged from the discharge pipe connected to the crushing chamber. A screen is usually installed in the crushing chamber. When in use, the screen is replaced according to the subsequent processing requirements. The mesh is used to adjust the fineness of the branch crushers. For example, if the branch crushers are used for general garden waste treatment, soil improvement, etc., a 5mm-8mm screen is required. If the branch crushers need to be subsequently processed into biomass fuel, machine-made charcoal and organic fertilizer, they need to be replaced with 3mm and below screens. However, replacing the small-aperture screen will reduce production, because the speed at which the material passes through the screen becomes slower and it takes longer to complete the screening process. In addition, when the existing branch crushers discharge directly through the discharge pipe, a large amount of dust will be discharged along with the branch crushers, polluting the environment and endangering the health of the staff. There is also the problem that the branch crushing is not thorough and is not conducive to subsequent utilization.

[0004] The utility model patent with application number 201720790451.9 discloses a dust-reducing branch crusher, including a machine body, a crushing chamber arranged in the machine body, and a gasoline engine installed on the machine body. The machine body is provided with a first feed port and a discharge port respectively. A feed hopper is connected to the machine body around the first feed port, and a dust-reducing device is connected to the feed hopper. The dust-reducing device includes a water tank connected to the machine body, a water pump installed in the water tank, a water spray pipe connected to the water pump, and a spray gun connected to the water spray pipe. When the crushing chamber crushes branches, the water sprayed by the spray gun is mixed with dust to reduce the dust from flying out and affecting the health of the workers. However, the viscosity and weight of the branch crushing material in the crushing chamber are increased, which affects the crushing effect of the branches in the crushing chamber, and also makes the branch crushing material more likely to adhere to the blade, the screen, and the inner wall of the crushing chamber, increasing the cleaning burden and the difficulty of discharging. In addition, the humidity of the branch crushing material increases the burden of subsequent processing.

[0005] The invention patent with application number 201811226645.1 discloses a branch crusher for greening construction and maintenance. By setting a cutting chamber, a first crushing roller and a crushing chamber, the cutting chamber is used to perform preliminary cutting on the branches on the conveyor belt, and the long branches are cut into shorter wood piles, and the first crushing roller is used to perform preliminary crushing on the wood piles; by setting a branch tube, a first outlet and a second outlet, and using the first crushing roller in the crushing chamber connected to the second outlet to finely crush the branches, the effect of conveniently changing the degree of tree crushing is achieved, the effect of tree crushing is improved, the device can produce crushed tree debris of different specifications, the practical performance of the device is improved, and it is beneficial to the later use of tree debris. An air pump is fixedly connected to the center of the top of the cutting chamber, and an air outlet nozzle is fixedly connected to the air outlet of the air pump. The air pump and the air outlet nozzle are used to blow air into the interior of the cutting chamber, and impurities and residues when the branches are cut are effectively blown into the interior of the crushing chamber, thereby improving the cleanliness of the interior of the device. However, driving the first crushing roller and the second crushing roller to rotate for crushing requires the use of multiple motors, which increases the cost and complicates the installation. In addition, when the air pump and the air outlet nozzle matched with the air pump blow the impurities and residues when the branches are cut into the crushing chamber, dust pollution problems will occur when discharging at the second outlet.

[0006] Therefore, it is necessary to design a method that can not generate dust problems during discharge, avoid the disadvantages caused by increased humidity of branch fragments, and can crush the branches more finely to improve the crushing effect. Summary of the invention

[0007] In view of the shortcomings of the prior art, the object of the present invention is to provide a pulverizing device on a pulverizer for garden maintenance.

[0008] To achieve the above object, the present invention provides the following technical solutions: A pulverizing device on a garden maintenance pulverizer comprises a mounting frame, on which a pulverizing unit and a material receiving box matched with the pulverizing unit are mounted. The crushing unit includes a primary crushing box, a secondary crushing box, a tertiary crushing box, two first crushing rollers, two second crushing rollers, two third crushing rollers, a first motor, a second motor and a transmission belt. The primary crushing box includes a feed inlet, and both ends of the secondary crushing box are connected to the primary crushing box and the tertiary crushing box respectively. The first motor is installed on the primary crushing box, the first crushing roller is placed horizontally and rotatably connected in the primary crushing box, and the shaft of the first crushing roller extends out of the primary crushing box, a gear 1 is installed on the shafts of the two first crushing rollers, and the two gears 1 are meshed, the shaft of one first crushing roller is connected to the output end of the first motor, and a large transmission wheel is installed on the shaft of the other first crushing roller. The second crushing roller is placed vertically and rotatably connected in the secondary crushing box. The two second crushing rollers cooperate with each other. The second motor is installed on the tertiary crushing box and connected to the shaft of the second crushing roller. The diameter of the second crushing roller increases gradually from top to bottom. The third crushing roller is placed horizontally and rotatably connected in the three-stage crushing box. A gear 2 is installed on the shafts of the two third crushing rollers. The two gears 2 are meshed. A small transmission wheel is installed on the shaft of one third crushing roller. The two ends of the transmission belt 1 are respectively connected to the large transmission wheel and the small transmission wheel. A suction fan is installed on the mounting frame. The input end of the suction fan is connected to the three-stage crushing box, and the output end of the suction fan is connected to the material receiving box.

[0009] It is further configured that the second crushing roller includes a plurality of crushing discs evenly arranged along the height direction of the second crushing roller, the crushing discs surround the second crushing roller, the crushing discs include annular convex teeth, the diameters of the plurality of crushing discs gradually increase from top to bottom along the height direction of the second crushing roller, and the plurality of crushing discs on the two second crushing rollers are arranged alternately.

[0010] It is further configured that a Y-shaped duct is installed at the input end of the suction fan, the main pipe of the Y-shaped duct is connected to the input end of the suction fan, the two branches of the Y-shaped duct are respectively connected to the first-stage crushing box and the third-stage crushing box, and one branch of the Y-shaped duct corresponds to the feed port.

[0011] It is further configured that a support rod is installed on one end of the shaft of the two second crushing rollers, a rotating wheel is installed on the two support rods, a transmission belt 2 is rotatably connected to the two rotating wheels, a gear 3 is installed on the output end of the second motor, and a gear 4 meshing with the gear 3 is installed on the support rod of one of the second crushing rollers.

[0012] It is further configured that a material guide port connected to the primary crushing box is opened at the top of the secondary crushing box, and the bottom of the primary crushing box is inclined toward the material guide port.

[0013] It is further configured that a material guide pipe connected to the tertiary crushing box is opened at the bottom of the secondary crushing box, the transmission belt surrounds the material guide pipe twice and does not contact the material guide pipe, and the bottom of the secondary crushing box is inclined toward the material guide pipe.

[0014] It is further configured that the material receiving box includes a discharge port, a plug is detachably connected inside the discharge port, and the bottom of the material receiving box is inclined toward the discharge port.

[0015] It is further configured that an exhaust hole is opened on the material receiving box, and a filter is installed in the exhaust hole.

[0016] It is further configured that the material receiving box is provided with a spiral tube threadedly connected to the exhaust hole, and the filter is installed in the connecting spiral tube.

[0017] By adopting the above technical scheme, the beneficial effects of the present invention are: it can avoid dust problems during discharge, avoid the disadvantages caused by increased humidity of branch fragments, and can crush the branches more finely to improve the crushing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic structural diagram of an embodiment of the present invention.

[0019] Figure 2 It is a schematic diagram of the structure of the large transmission wheel and the small transmission wheel.

[0020] Figure 3 It is a schematic diagram of the structure of the coordination between the accumulator wheel and the transmission belt 2.

[0021] Figure 4 It is a structural diagram of the cooperation between the collecting box and the filter screen.

[0022] Figure 5 It is a structural schematic diagram of the cooperation between the filter screen and the connecting spiral tube.

[0023] In the figure: mounting frame 01, crushing unit 02, material receiving box 03, primary crushing box 1, secondary crushing box 2, tertiary crushing box 3, first crushing roller 4, second crushing roller 5, third crushing roller 6, first motor 7, second motor 8, transmission belt 1 9, feed port 10, gear 1 11, large transmission wheel 12, gear 2 13, small transmission wheel 14, suction fan 15, crushing disc 16, annular convex teeth 17, Y-shaped duct 18, support rod 19, rotating wheel 20, transmission belt 2 21, gear 3 22, gear 4 23, material guide port 24, material guide pipe 25, discharge port 26, plug 27, exhaust hole 28, filter screen 29, connecting screw tube 30. DETAILED DESCRIPTION

[0024] Reference Figures 1 to 5 The embodiments of the present invention are further described.

[0025] A crushing device on a garden maintenance crusher includes a mounting frame 01, on which a crushing unit 02 and a material receiving box 03 cooperating with the crushing unit 02 are mounted. The crushing unit 02 includes a primary crushing box 1, a secondary crushing box 2, a tertiary crushing box 3, two first crushing rollers 4, two second crushing rollers 5, two third crushing rollers 6, a first motor 7, a second motor 8 and a transmission belt 9. The primary crushing box 1 includes a feed inlet 10, and both ends of the secondary crushing box 2 are connected to the primary crushing box 1 and the tertiary crushing box 3 respectively. The first motor 7 is installed on the primary crushing box 1, the first crushing roller 4 is placed horizontally and rotatably connected in the primary crushing box 1 through a bearing, and the shaft of the first crushing roller 4 extends out of the primary crushing box 1, and a gear 11 is installed on the shafts of the two first crushing rollers 4, and the two gears 11 are meshed, the shaft of one first crushing roller 4 is connected to the output end of the first motor 7, and the shaft of the other first crushing roller 4 is installed with a large transmission wheel 12. The second crushing roller 5 is placed vertically and connected to the secondary crushing box 2 through a bearing. The two second crushing rollers 5 cooperate with each other. The second motor 8 is installed on the tertiary crushing box 3. A support rod 19 placed outside the secondary crushing box 2 is installed on one end of the shaft of the two second crushing rollers 5. A rotating wheel 20 is installed on the two supporting rods 19. The two rotating wheels 20 are rotatably connected with a transmission belt 21. A gear 3 22 is installed on the output end of the second motor 8. A gear 4 23 meshing with the gear 3 22 is installed on the supporting rod 19 of one second crushing roller 5. The diameter of the second crushing roller 5 gradually increases from top to bottom. The third crushing roller 6 is placed horizontally and rotatably connected in the three-stage crushing box 3 through a bearing. A gear 2 13 is installed on the shaft of the two third crushing rollers 6. The two gears 2 13 are meshed. A small transmission wheel 14 is installed on the shaft of one third crushing roller 6. The two ends of the transmission belt 1 9 are respectively connected to the large transmission wheel 12 and the small transmission wheel 14. A suction fan 15 is installed on the mounting frame 01. The input end of the suction fan 15 is connected to the three-stage crushing box 3, and the output end of the suction fan 15 is connected to the material receiving box 03.

[0026] Working principle: The branches to be crushed enter the primary crushing box 1 from the feed port 10, and the first motor 7 drives a gear 11 to rotate, driving another gear 11 to rotate, so that the two first crushing rollers 4 rotate to initially crush the branches entering the primary crushing box 1 into small pieces of branch debris. The small pieces of branch fragments enter the secondary crushing box 2, and the second motor 8 drives the gear three 22 to rotate, thereby driving the gear four 23 to rotate, and the rotation of the gear four 23 drives a support rod 19 to rotate, so that the rotating wheel 20 on this support rod 19 rotates and drives the rotating wheel 20 on another support rod 19 to rotate through the transmission belt two 21, thereby rotating the two second crushing rollers 5 to further crush the small pieces of branch fragments entering the secondary crushing box 2. With the diameter of the second crushing roller 5 gradually increasing from top to bottom, the small pieces of branch fragments fall in the secondary crushing box 2. As the diameter of the crushing roller increases gradually, the pressure on the small pieces of branch fragments also increases gradually, which is conducive to the two second crushing rollers 5 to crush the small pieces of branch fragments more evenly. At the same time, the distance between the two second crushing rollers 5 becomes smaller and smaller, and the small pieces of branch fragments are crushed step by step, so that the degree of crushing gradually increases during the falling process, and the particles of the small pieces of branch fragments become finer and finer, so as to achieve the purpose of finely crushing the small pieces of branch fragments and improve the crushing effect. The two second crushing rollers 5 are rotated under the action of a second motor 8, and there is no need to use two motors, which reduces the cost. The branch fragments crushed by the second crushing roller 5 directly fall into the tertiary crushing box 3 for more detailed crushing, and there is no need to replace the screen. Specifically, the first motor 7 drives a gear 11 to rotate, while driving another gear 11 to rotate, and also makes the large transmission wheel 12 on the other first crushing roller 4 rotate, thereby driving a third crushing roller 6 to rotate through a transmission belt 19 and a small transmission wheel 14, and cooperating with the two gears 2 13 to mesh, so that the two third crushing rollers 6 rotate to enter the tertiary crushing box 3 for more detailed crushing, further improving the crushing effect, and the rotation of the two third crushing rollers 6 also uses the first motor 7 as the power source, without using an additional motor, further reducing the cost. The branch fragments crushed by the third crushing roller 6 are discharged into the receiving box 03 for collection under the operation of the suction fan 15, which ultimately achieves the goal of not generating dust problems during discharge while avoiding the disadvantages caused by increased humidity in the branch fragments, and can crush the branches more finely to improve the crushing effect.

[0027] The second crushing roller 5 includes a plurality of crushing discs 16 evenly arranged along the height direction of the second crushing roller 5. The crushing discs 16 surround the second crushing roller 5 and include annular convex teeth 17. The diameters of the plurality of crushing discs 16 gradually increase from top to bottom along the height direction of the second crushing roller 5. The plurality of crushing discs 16 on the two second crushing rollers 5 are arranged in a staggered manner, so that when the second crushing roller 5 rotates, the annular convex teeth 17 on the crushing discs 16 rotate to cut and crush the branch fragments entering the secondary crushing box 2, and cut and crush the small pieces of branch fragments into smaller and smaller pieces during their falling process, thereby achieving the purpose of finely crushing the small pieces of branch fragments.

[0028] A Y-shaped duct 18 is installed at the input end of the suction fan 15, the main pipe of the Y-shaped duct 18 is connected to the input end of the suction fan 15, and the two branches of the Y-shaped duct 18 are respectively connected to the primary crushing box 1 and the tertiary crushing box 3, and one branch of the Y-shaped duct 18 corresponds to the feed port 10. The suction fan 15 working through the Y-shaped duct 18 discharges the crushed branch fragments in the tertiary crushing box 3 into the receiving box 03. At the same time, one branch of the Y-shaped duct 18 corresponds to the feed port 10 so that the suction fan 15 sucks the dust generated in the primary crushing box 1 into the discharge box to prevent the dust generated in the primary crushing box 1 from escaping from the discharge port and polluting the environment.

[0029] A material guide port 24 connected to the primary crushing box 1 is provided at the top of the secondary crushing box 2, and the bottom of the primary crushing box 1 is inclined toward the material guide port 24, so that the small pieces of branch debris crushed by the first crushing roller 4 in the primary crushing box 1 can smoothly enter the secondary crushing box 2 for further crushing.

[0030] A material guide pipe 25 connected to the tertiary crushing box 3 is provided at the bottom of the secondary crushing box 2. The bottom of the secondary crushing box 2 is inclined towards the material guide pipe 25, so that the branch fragments finely crushed by the second crushing roller 5 in the secondary crushing box 2 can enter the tertiary crushing box 3 for further crushing. The second transmission belt 21 surrounds the material guide pipe 25 and does not contact the material guide pipe 25, so as to prevent the material guide pipe 25 from affecting the rotation of the second transmission belt 21.

[0031] The material receiving box 03 includes a discharge port 26, and a plug 27 is detachably connected to the discharge port 26. The bottom of the material receiving box 03 is inclined toward the discharge port 26, so that the branch fragments collected in the material receiving box 03 can be transferred from the material receiving box 03. Specifically, the container for branch fragments is placed under the discharge port 26, and the plug 27 is opened to allow the branch fragments in the material receiving box 03 to enter the container from the discharge port 26. After the container is full, the plug 27 closes the discharge port 26, and the next container is replaced to correspond to the discharge port 26 and then the plug 27 is opened. The above steps are repeated until all the branch fragments in the material receiving box 03 are discharged. With the bottom of the material receiving box 03 tilted toward the discharge port 26, it is convenient for all the branch fragments in the material receiving box 03 to be discharged smoothly without remaining in the material receiving box 03.

[0032] An exhaust hole 28 is provided on the collecting box 03, and a filter 29 is installed in the exhaust hole 28. Since the suction fan 15 discharges the branch fragments into the collecting box 03 and the gas into the collecting box 03 at the same time, the air pressure in the collecting box 03 will gradually increase. The setting of the exhaust hole facilitates the discharge of the gas entering the collecting box 03 and facilitates the normal use of the collecting box 03. The setting of the filter 29 in the exhaust hole 28 prevents the branch fragments in the collection box from being discharged from the exhaust hole along with the gas, causing dust problems and polluting the environment.

[0033] The receiving box 03 is provided with a screw pipe 30 which is threadedly connected to the exhaust hole 28, and the filter 29 is installed in the connecting screw pipe 30, so that the filter 29 can be stably installed in the exhaust hole for filtering the branch fragments in the gas, and the filter 29 can be easily removed for cleaning to prevent the filter 29 from being clogged after long-term use, affecting the exhaust effect.

[0034] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Common changes and substitutions made by those skilled in the art within the scope of the technical solution of the present invention should be included in the protection scope of the present invention.

Claims

1. A pulverizing device on a garden maintenance pulverizer, comprising a mounting frame (01), characterized in that: The mounting frame (01) is provided with a crushing unit (02) and a material receiving box (03) cooperating with the crushing unit (02). The crushing unit (02) comprises a primary crushing box (1), a secondary crushing box (2), a tertiary crushing box (3), two first crushing rollers (4), two second crushing rollers (5), two third crushing rollers (6), a first motor (7), a second motor (8) and a transmission belt (9). The primary crushing box (1) comprises a feed inlet (10). Both ends of the secondary crushing box (2) are respectively connected to the primary crushing box (1) and the tertiary crushing box (3). The first motor (7) is mounted on the primary crushing box (1), the first crushing roller (4) is placed horizontally and rotatably connected in the primary crushing box (1), and the shaft of the first crushing roller (4) extends out of the primary crushing box (1), a gear one (11) is mounted on the shafts of the two first crushing rollers (4), and the two gears one (11) are meshed, the shaft of one first crushing roller (4) is connected to the output end of the first motor (7), and a large transmission wheel (12) is mounted on the shaft of the other first crushing roller (4), The second crushing roller (5) is vertically placed and rotatably connected in the secondary crushing box (2). The two second crushing rollers (5) cooperate with each other. The second motor (8) is installed on the tertiary crushing box (3) and connected to the shaft of the second crushing roller (5). The diameter of the second crushing roller (5) gradually increases from top to bottom. The third crushing roller (6) is placed horizontally and rotatably connected in the three-stage crushing box (3). A gear 2 (13) is installed on the shafts of the two third crushing rollers (6). The two gears 2 (13) are meshed. A small transmission wheel (14) is installed on the shaft of one of the third crushing rollers (6). The two ends of the transmission belt 1 (9) are respectively connected to the large transmission wheel (12) and the small transmission wheel (14). A suction fan (15) is installed on the mounting frame (01). The input end of the suction fan (15) is connected to the three-stage crushing box (3), and the output end of the suction fan (15) is connected to the material receiving box (03).

2. The crushing device on the garden maintenance crusher according to claim 1 is characterized in that: The second pulverizing roller (5) comprises a plurality of pulverizing discs (16) evenly arranged along the height direction of the second pulverizing roller (5), the pulverizing discs (16) surround the second pulverizing roller (5), the pulverizing discs (16) comprise annular convex teeth (17), the diameters of the plurality of pulverizing discs (16) gradually increase from top to bottom along the height direction of the second pulverizing roller (5), and the plurality of pulverizing discs (16) on the two second pulverizing rollers (5) are arranged in a staggered manner.

3. The pulverizing device on the garden maintenance pulverizer according to claim 2 is characterized in that: A Y-shaped duct (18) is installed at the input end of the suction fan (15); the main pipe of the Y-shaped duct (18) is connected to the input end of the suction fan (15); the two branch pipes of the Y-shaped duct (18) are respectively connected to the primary crushing box (1) and the tertiary crushing box (3); and one branch pipe of the Y-shaped duct (18) corresponds to the feed port (10).

4. The pulverizing device on the garden maintenance pulverizer according to claim 3 is characterized in that: A support rod (19) is mounted on one end of the shaft of each of the two second crushing rollers (5), a rotating wheel (20) is mounted on each of the two support rods (19), a transmission belt 2 (21) is rotatably connected to the two rotating wheels (20), a gear 3 (22) is mounted on the output end of the second motor (8), and a gear 4 (23) meshing with the gear 3 (22) is mounted on the support rod (19) of one of the second crushing rollers (5).

5. The pulverizing device on the garden maintenance pulverizer according to claim 4 is characterized in that: The top of the secondary crushing box (2) is provided with a material guide port (24) which is in communication with the primary crushing box (1), and the bottom of the primary crushing box (1) is inclined towards the material guide port (24).

6. The pulverizing device on the garden maintenance pulverizer according to claim 5, characterized in that: The bottom of the secondary crushing box (2) is provided with a material guide pipe (25) which is connected to the tertiary crushing box (3); the second transmission belt (21) surrounds the material guide pipe (25) and does not contact the material guide pipe (25); and the bottom of the secondary crushing box (2) is inclined toward the material guide pipe (25).

7. The pulverizing device on the garden maintenance pulverizer according to claim 6 is characterized in that: The material receiving box (03) comprises a discharge port (26), a plug (27) is detachably connected inside the discharge port (26), and the bottom of the material receiving box (03) is inclined towards the discharge port (26).

8. The pulverizing device on the garden maintenance pulverizer according to claim 7, characterized in that: The material receiving box (03) is provided with an exhaust hole (28), and a filter screen (29) is installed in the exhaust hole (28).

9. The pulverizing device on the garden maintenance pulverizer according to claim 8, characterized in that: The material receiving box (03) is provided with a screw pipe (30) threadedly connected to the exhaust hole (28), and the filter screen (29) is installed in the connecting screw pipe (30).

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