CN215086942U

CN215086942U - Fertilizer granule granulation production line

Info

Publication number: CN215086942U
Application number: CN202121442002.8U
Authority: CN
Inventors: 陈黎明
Original assignee: Hubei Baifunong Technology Agriculture Co ltd
Current assignee: Hubei Baifunong Technology Agriculture Co ltd
Priority date: 2021-06-28
Filing date: 2021-06-28
Publication date: 2021-12-10
Anticipated expiration: 2031-06-28

Abstract

A fertilizer particle granulation production line comprises a granulation device, a screening device, a drying device and a blanking and packaging device which are sequentially arranged, wherein the granulation device comprises a shell, a feed hopper arranged at the upper part of the shell, a pair of granulation compression rollers arranged at the middle part of the shell and a crushed material returning mechanism arranged at the lower part of the shell; the shell is of a rectangular box-shaped structure, the feed hopper comprises an upper groove-shaped hopper, a middle square hopper and a lower groove-shaped hopper which are integrally formed, and hopper grooves of the upper groove-shaped hopper and the lower groove-shaped hopper are both of a trapezoidal structure. The utility model has the advantages that: the granulation particles are uniform, the granulation efficiency is high, and the use is convenient. The screening speed is high, and the complete separation of the small-particle materials is ensured by twice screening. The retention time is prolonged, the contact area is also obviously increased, the drying effect of the fertilizer particles is good, and the use is convenient. The automatic bag feeding and the automatic belt opening reduce the labor intensity of workers.

Description

Fertilizer granule granulation production line

Technical Field

The utility model relates to a fertilizer processing technology field, concretely relates to fertilizer granule granulation production line.

Background

When the existing compression roller granulator for fertilizer is used for granulation, fertilizer raw materials are usually directly granulated, so that partial granulated particles are overlarge or are uneven in shape to influence the granulation quality without being crushed to a certain degree and directly granulated. And some materials can be adhered to the pair roller under the action of the extrusion force, so that the granulation quality is easily influenced. The screening device has the defects of low screening speed and incomplete separation of small-particle materials, and the quality of the fertilizer is influenced. When drying device was drying, fertilizer granule often drying efficiency is not high enough, mainly because its material raising portion stays the material time not long enough for drying effect is unsatisfactory. The fertilizer blanking and packaging device has the advantages of low bagging speed and high labor intensity of workers, and can not meet the production requirements of factories.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a fertilizer granule granulation production line to above-mentioned defect exactly.

A fertilizer particle granulation production line, which comprises a granulation device, a screening device, a drying device and a blanking and packaging device which are arranged in sequence,

the granulating device comprises a shell, a feed hopper arranged at the upper part of the shell, a pair of granulating press rollers arranged at the middle part of the shell and a crushed material returning mechanism arranged at the lower part of the shell; the shell is of a rectangular box-shaped structure, the feed hopper comprises an upper groove-shaped hopper, a middle square hopper and a lower groove-shaped hopper which are integrally formed, hopper grooves of the upper groove-shaped hopper and the lower groove-shaped hopper are both of a trapezoidal structure, a fertilizer feed pipe is arranged above the upper groove-shaped hopper, a group of crushing rollers are further arranged in the middle square hopper, a first filter screen plate is arranged below the group of crushing rollers, and a pair of connecting plates connected with the inner wall of the shell is arranged at the bottom of the lower groove-shaped hopper; a pair of granulation compression rollers are arranged below the lower groove-shaped hopper, cleaning brushes are respectively arranged on the two sides of the pair of granulation compression rollers and on the inner wall of the shell, and bristles of the cleaning brushes are abutted against roller bodies of the pair of granulation compression rollers; a second filter screen plate is obliquely arranged below the pair of granulation compression rollers, and a granulation outlet part is arranged at the connecting part of the lower end of the second filter screen plate and the shell; the crushed material returning mechanism comprises a crushed material guide plate, a returning pipe and a returning pump, wherein the crushed material guide plate is obliquely arranged below the second filter screen plate, the returning pipe is arranged on the returning pipe, one end of the returning pipe is connected to the joint of the lower end of the crushed material guide plate and the shell, and the other end of the returning pipe extends into the upper groove-shaped hopper;

the screening device comprises a screening support, a disc roller screen, a vibrating screen and a spiral conveyor, wherein a group of vibrating screen supporting seats are arranged at the top of the screening support, an inclined roller screen support is arranged in the middle of the screening support, the vibrating screen is installed on the group of vibrating screen supporting seats through a compression spring, the feeding end of the vibrating screen is positioned under the pelletizing outlet part, an arc discharge chute is arranged at the discharge outlet of the vibrating screen, a discharge hopper is arranged at the bottom of the vibrating screen, a frame of the disc roller screen is installed on the inclined roller screen support, the feeding port of the disc roller screen is communicated with the discharge outlet of the arc discharge chute, a finished product discharge chute is arranged at the discharge outlet of the disc roller screen, the feeding port of the finished product discharge chute is larger than the discharge outlet, the discharge hopper is arranged at the bottom of the disc roller screen, the spiral conveyor is installed at the bottom of the screening support, and the spiral conveyor is provided with a first feeding port and a second feeding port, the discharging funnel of the vibrating screen is communicated with the first feeding hole through a pipeline, and the discharging funnel of the disc roller screen is communicated with the second feeding hole through a pipeline;

the drying device comprises a drying roller, a feed hopper arranged at one end of the drying roller and a discharging part arranged at the other end of the drying roller; a feeding belt is arranged below a discharge hole of the finished product discharge groove, and a discharge end of the feeding belt is positioned right above a feed hopper of the drying roller; the drying drum is arranged in an inclined mode, the feed hopper is located at the higher end of the drying drum, a first supporting seat is arranged below the front end of the drying drum, a first supporting rolling ring in rotary connection with the drying drum is arranged on the first supporting seat, a transmission gear is mounted on the drying drum, a drum driving motor is further arranged on the first supporting seat, the drum driving motor drives the transmission gear to rotate through a speed reducer and a driving gear, a second supporting seat is arranged below the rear end of the drying drum, and a second supporting rolling ring in rotary connection with the drying drum is arranged on the second supporting seat; a hot air inlet is also formed in one side of the drying drum and is connected with an external heat source through a pipeline, the discharging part is arranged at the discharging end of the drying drum, a dried fertilizer outlet is formed in the bottom of the discharging part, and a hot air outlet is formed in the top of the discharging part; the drying drum is internally provided with a plurality of material lifting parts, the material lifting parts are arranged along the length direction of the drying drum, each material lifting part comprises a pair of rectangular plates with the tops connected and a pair of fan-shaped plates for sealing the two sides of the rectangular plates, the bottoms of the rectangular plates and the fan-shaped plates are connected with the inner wall of the drying drum, and the tops of the rectangular plates are also provided with transverse plates with the same length as the rectangular plates;

the blanking packaging device comprises a bin type metering scale which is arranged under a dry fertilizer outlet and used for receiving materials, wherein two sides of a discharging port of a blanking pipeline of the bin type metering scale are inclined planes, two sides of the blanking pipeline of the bin type metering scale are respectively provided with a bag opening component, two ends of the blanking pipeline of the bin type metering scale are respectively provided with an auxiliary opening component, a packaging belt lifting component is arranged on the horizontal ground below the bin type metering scale, the bag opening component comprises an adsorption plate, a pair of L-shaped connecting plates, a pressing cylinder and a lifting cylinder, a group of sucker mounting holes are formed in the adsorption plate, vacuum suckers are arranged in the sucker mounting holes, a cylinder connecting lug seat is arranged on the adsorption plate, one end of each L-shaped connecting plate is fixedly arranged on the adsorption plate, the corner ends of the pair of L-shaped connecting plates are movably arranged on the outer wall of the blanking pipeline of the bin type metering scale through pin shafts, and a cylinder barrel of the pressing cylinder is movably arranged between the pair of L-shaped connecting plates, the end part of a piston rod of the pressing cylinder is movably connected with a cylinder connecting lug seat of the adsorption plate, the end part of a cylinder barrel of the lifting cylinder is movably arranged on the outer wall of a blanking pipeline of the bin-type metering scale, and the end part of a piston rod of the lifting cylinder is movably connected with the other end of one L-shaped connecting plate; the auxiliary opening assembly comprises an air cylinder supporting plate, a transverse pushing air cylinder and a bag opening pneumatic finger, the air cylinder supporting plate is fixedly installed on the outer wall of a discharging pipeline of the bin type metering scale, a sliding groove is formed in the bottom of the air cylinder supporting plate, a sliding rail matched with the sliding groove is arranged at the top of the bag opening pneumatic finger, the transverse pushing air cylinder is installed at the bottom of the air cylinder supporting plate, and the end part of a piston rod of the transverse pushing air cylinder is fixedly connected with the bag opening pneumatic finger; the packaging belt lifting assembly comprises a lifting support, a rotating shaft, a pair of bag conveying pneumatic fingers, a rack and pinion mechanism and a rack driving cylinder, wherein a rack sliding groove is formed in the lifting support, the rotating shaft is movably mounted on the lifting support through a bearing, the pair of bag conveying pneumatic fingers are respectively fixedly connected with the rotating shaft through a connecting arm, a gear of the rack and pinion mechanism is mounted at the end of the rotating shaft, a rack of the rack and pinion mechanism is slidably mounted in the rack sliding groove, the rack driving cylinder is mounted on the lifting support, and a power output shaft of the rack driving cylinder is fixedly connected with one end of a rack of the rack and pinion mechanism.

Clamping plates are respectively arranged on a pair of clamping jaws of the bag opening pneumatic fingers, and pushing plates are arranged at the end parts of the clamping plates.

The gear rack mechanism and the rack driving cylinder are replaced by a servo motor, and a power output shaft of the servo motor is in transmission connection with the end part of the rotating shaft.

The top of feeder hopper is equipped with its confined apron, sets up the hole that supplies fertilizer inlet pipe and return pipe to stretch into on the apron.

The group of the crushing rollers are driven to rotate by a group of first motors arranged on the outer wall of the upper part of the shell.

The length of the middle square hopper is the same as that of the shell, and the width of the middle square hopper is one half of that of the shell.

The pair of granulating press rollers are driven to rotate by a pair of second motors arranged on the outer wall of the middle part of the shell.

The end part of each roller of the disc roller screen is provided with a pair of chain wheels, two adjacent roller chain wheels are connected through a chain, and one of the rollers is driven to rotate through a motor.

The finished product discharge chute is detachably mounted at the discharge end of the disc roller screen through a bolt.

A telescopic pipe is arranged at the discharge port of a discharge hopper of the vibrating screen and communicated with a first feed port of the screw conveyor through a hard pipeline.

The utility model has the advantages that: the granulation particles are uniform, the granulation efficiency is high, and the use is convenient. The screening speed is high, and the complete separation of the small-particle materials is ensured by twice screening. The material lifting part comprises a pair of rectangular plates and a pair of fan-shaped plates, the tops of the rectangular plates are connected with each other, the two sides of each rectangular plate are sealed, and the tops of the rectangular plates are also provided with transverse plates with the same length as the rectangular plates, so that the material retention time is prolonged, the contact area is also remarkably increased, the fertilizer particle drying effect is good, and the use is convenient. The automatic bag feeding and the automatic belt opening reduce the labor intensity of workers.

Description of the drawings

Fig. 1 is a schematic connection diagram of the present invention.

Fig. 2 is a schematic structural view of a granulating apparatus.

Fig. 3 is a schematic structural view of an upper trough hopper.

Figure 4 is a schematic diagram of the construction of the screening device.

Figure 5 is a schematic side view of a screening device.

Fig. 6 is a schematic structural view of the drying apparatus.

Fig. 7 is a schematic view of the structure of the inside of the drying drum.

Fig. 8 is a schematic structural view of the material raising part.

Fig. 9 is a schematic structural view of the blanking and packaging device.

Fig. 10 is a schematic perspective view of the blanking packaging device.

Fig. 11 is a schematic front view of the blanking and packaging device.

Fig. 12 is a schematic view of the structure of the packaging tape lifting assembly.

Fig. 13 is a schematic structural view of the bag opening assembly.

Fig. 14 is a schematic view showing a configuration of the packing bag grasping apparatus.

Fig. 15 is a schematic structural view of the blanking packaging device during bag opening.

Detailed Description

As shown in the attached drawings, the fertilizer particle granulating production line comprises a granulating device 500, a screening device 501, a drying device 502 and a blanking packaging device 503 which are arranged in sequence,

the granulating device 500 comprises a shell 1, a feed hopper arranged at the upper part of the shell 1, a pair of granulating press rollers 3 arranged at the middle part of the shell 1 and a crushed material returning mechanism arranged at the lower part of the shell 1; the shell 1 is of a rectangular box-shaped structure, the feed hopper comprises an upper groove-shaped hopper 21, a middle square hopper 22 and a lower groove-shaped hopper 23 which are integrally formed, hopper grooves of the upper groove-shaped hopper 21 and the lower groove-shaped hopper 23 are both of a trapezoidal structure, a fertilizer feed pipe 9 is arranged above the upper groove-shaped hopper 21, a group of crushing rollers 24 is further arranged in the middle square hopper 22, a first filter screen plate 25 is arranged below the group of crushing rollers 24, and a pair of connecting plates 26 connected with the inner wall of the shell 1 is arranged at the bottom of the lower groove-shaped hopper 23; a pair of granulation compression rollers 3 is arranged below the lower groove-shaped hopper 23, cleaning brushes 4 are respectively arranged on the two sides of the pair of granulation compression rollers 3 and on the inner wall of the shell 1, and bristles of the cleaning brushes 4 are abutted to roller bodies of the pair of granulation compression rollers 3; a second filter screen plate 27 is obliquely arranged below the pair of granulation press rollers 3, and a granulation outlet part 5 is arranged at the joint of the lower end of the second filter screen plate 27 and the shell 1; the crushed material returning mechanism comprises a crushed material guide plate 6 obliquely arranged below the second filter screen plate 27, a returning pipe 7 and a returning pump 8 arranged on the returning pipe 7, one end of the returning pipe 7 is connected to the joint of the lower end of the crushed material guide plate 6 and the shell 1, and the other end of the returning pipe extends into the upper groove-shaped hopper 21;

the screening device 501 comprises a screening support 100, a disc roller screen 101, a vibrating screen 102 and a screw conveyor 103, a group of vibrating screen supporting seats is arranged at the top of the screening support 100, an inclined roller screen support is arranged at the middle of the screening support 100, the vibrating screen 102 is mounted on the group of vibrating screen supporting seats through a compression spring, the feeding end of the vibrating screen 102 is located under the granulation outlet part 5, an arc-shaped discharge chute 104 is arranged at the discharge port of the vibrating screen 102, a discharge hopper is arranged at the bottom of the vibrating screen 102, a frame of the disc roller screen 101 is mounted on the inclined roller screen support, the feeding port of the disc roller screen 101 is communicated with the discharge port of the arc-shaped discharge chute 104, a finished product discharge chute 105 is arranged at the discharge port of the disc roller screen 101, the feeding port of the finished product discharge chute 105 is larger than the discharge port, the discharge hopper is arranged at the bottom of the disc roller screen 101, and the screw conveyor 103 is mounted at the bottom of the screening support 100, a first feeding hole and a second feeding hole are formed in the spiral conveyor 103, a discharging funnel of the vibrating screen 102 is communicated with the first feeding hole through a pipeline, and a discharging funnel of the disc roller screen 101 is communicated with the second feeding hole through a pipeline;

the drying device 502 comprises a drying roller 50, a feed hopper 51 arranged at one end of the drying roller 50, and a discharging part 52 arranged at the other end of the drying roller 50; a feeding belt 66 is arranged below a discharge hole of the finished product discharge groove 105, and a discharge end of the feeding belt 66 is positioned right above the feed hopper 51 of the drying drum 50; the drying drum 50 is arranged in an inclined manner, the feed hopper 51 is located at the higher end of the drying drum 50, a first support seat 53 is arranged below the front end of the drying drum 50, a first support rolling ring 54 rotationally connected with the drying drum 50 is arranged on the first support seat 53, a transmission gear 55 is mounted on the drying drum 50, a drum driving motor 56 is further arranged on the first support seat 53, the drum driving motor 56 drives the transmission gear 55 to rotate through a speed reducer and a driving gear 57, a second support seat 58 is arranged below the rear end of the drying drum 50, and a second support rolling ring 59 rotationally connected with the drying drum 50 is arranged on the second support seat 58; a hot air inlet 60 is further formed in one side of the drying drum 50, the hot air inlet 60 is connected with an external heat source through a pipeline, the discharging portion 52 is arranged at the discharging end of the drying drum 50, a dried fertilizer outlet 61 is formed in the bottom of the discharging portion 52, and a hot air outlet 62 is formed in the top of the discharging portion 52; a plurality of material lifting parts are arranged in the drying drum 50, the material lifting parts are arranged along the length direction of the drying drum 50, each material lifting part comprises a pair of rectangular plates 63 with the tops connected and a pair of fan-shaped plates 64 for sealing two sides of the rectangular plates 63, the bottoms of the rectangular plates 63 and the fan-shaped plates 64 are connected with the inner wall of the drying drum 50, and the tops of the rectangular plates 63 are also provided with transverse plates 65 with the same length as the transverse plates;

the blanking packaging device 503 comprises a bin type metering scale 200 which is arranged right below the dry fertilizer outlet 61 and is used for receiving materials, two sides of a discharging port of a blanking pipeline of the bin type metering scale 200 are inclined planes, two sides of the blanking pipeline of the bin type metering scale 200 are respectively provided with a bag opening component 201, two ends of the blanking pipeline of the bin type metering scale 200 are respectively provided with an auxiliary opening component 202, a packaging belt lifting component 203 is arranged on the horizontal ground below the bin type metering scale 200, the bag opening component 201 comprises an adsorption plate 204, a pair of L-shaped connecting plates 205, a pressing cylinder 206 and a lifting cylinder 207, a group of sucker mounting holes are arranged on the adsorption plate 204, vacuum suckers are arranged in the sucker mounting holes, a cylinder connecting lug seat is arranged on the adsorption plate 204, one end of the L-shaped connecting plate 205 is fixedly arranged on the adsorption plate 204, corner ends of the pair of L-shaped connecting plates 205 are movably arranged on the outer wall of the blanking pipeline of the bin type metering scale 200 through pin shafts, the cylinder barrel of the pressing cylinder 206 is movably arranged between the pair of L-shaped connecting plates 205, the end part of the piston rod of the pressing cylinder 206 is movably connected with the cylinder connecting lug seat of the adsorption plate 204, the end part of the cylinder barrel of the lifting cylinder 207 is movably arranged on the outer wall of the blanking pipeline of the bin-type scale 200, and the end part of the piston rod of the lifting cylinder 207 is movably connected with the other end of one of the L-shaped connecting plates 205; the auxiliary opening assembly 202 comprises an air cylinder supporting plate 208, a transverse pushing air cylinder 209 and a bag opening pneumatic finger 210, the air cylinder supporting plate 208 is fixedly installed on the outer wall of a discharging pipeline of the bin-type metering scale 200, a sliding groove is formed in the bottom of the air cylinder supporting plate 208, a sliding rail matched with the sliding groove is arranged at the top of the bag opening pneumatic finger 210, the transverse pushing air cylinder 209 is installed at the bottom of the air cylinder supporting plate 208, and the end portion of a piston rod of the transverse pushing air cylinder 209 is fixedly connected with the bag opening pneumatic finger 210; the packaging tape lifting assembly 203 comprises a lifting support 211, a rotating shaft 212, a pair of bag feeding pneumatic fingers 213, a rack and pinion mechanism 214 and a rack driving cylinder 215, wherein a rack sliding groove is formed in the lifting support 211, the rotating shaft 212 is movably mounted on the lifting support 211 through a bearing, the pair of bag feeding pneumatic fingers 213 are fixedly connected with the rotating shaft 212 through connecting arms respectively, a gear of the rack and pinion mechanism 214 is mounted at the end part of the rotating shaft 212, a rack of the rack and pinion mechanism 214 is slidably mounted in the rack sliding groove, the rack driving cylinder 215 is mounted on the lifting support 211, and a power output shaft of the rack driving cylinder 215 is fixedly connected with one end of a rack of the rack and pinion mechanism 214.

Clamping plates 216 are respectively arranged on the pair of clamping jaws of the bag opening pneumatic finger 210, and pushing plates are arranged at the ends of the clamping plates 216.

The rack and pinion mechanism 214 and the rack driving cylinder 215 are replaced by a servo motor, and a power output shaft of the servo motor is in transmission connection with the end of the rotating shaft 212.

The top of feeder hopper is equipped with its confined apron 10, sets up the hole that supplies fertilizer inlet pipe 9 and return pipe 7 to stretch into on the apron 10.

A set of crusher rolls 24 are rotated by a set of first motors mounted to the upper outer wall of the housing 1.

The length of the middle square hopper 22 is the same as that of the shell 1, and the width of the middle square hopper 22 is one half of that of the shell 1.

The pair of granulation rollers 3 is driven to rotate by a pair of second motors installed on the outer wall of the middle part of the housing 1.

The end of each roller of the disc roller screen 101 is provided with a pair of chain wheels, two adjacent roller chain wheels are connected through a chain, and one of the rollers is driven to rotate through a motor.

The finished product discharge chute 105 is removably mounted at the discharge end of the disc roller screen 101 by bolts.

A flexible pipe is arranged at the discharge port of the discharge hopper of the vibrating screen 102 and is communicated with a first feed port of the screw conveyor 103 through a hard pipeline.

The inner wall of the drying drum 50 is coated with a smooth coating layer.

A pair of rectangular plates 63 and a pair of sector plates 64 are welded to the inner wall of the drying drum 50.

The external heat source is a hot blast stove or a hot air generator.

The working principle is as follows: fertilizer raw materials enter an upper groove-shaped hopper 21 through a fertilizer feeding pipe 9, fall into a middle square hopper 22, are crushed to a proper degree through a group of crushing rollers 24, fall into a lower groove-shaped hopper 23 through a first filter screen plate 25, and are granulated and formed through a pair of granulation compression rollers 3 to form fertilizer particles. The fertilizer particles reaching the qualified particle size are guided by the second filter screen plate 27 and discharged from the granulation outlet part 5. Fertilizer particles which do not reach the qualified particle size fall onto the crushed material guide plate 6, and are recovered into the upper groove-shaped hopper 21 through the return pipe 7 and the return pump 8 to be granulated again. The top of the feed hopper is provided with a cover plate 30 for sealing the feed hopper, so that the overflow of fertilizer raw materials can be effectively reduced, and the generation of dust is reduced.

The fertilizer of waiting to sieve of export portion 5 exhaust of granulation is inserted to the feed end by shale shaker 102, the screen cloth through shale shaker 102 tentatively sieves out the tiny particle thing in the fertilizer, collect the back by the funnel and deliver to screw conveyer 103 in the output, fertilizer after the preliminary screening is delivered to disc roller screen 101 in by arc blown down tank 104, the secondary screening, the tiny particle fertilizer who sieves out is delivered to screw conveyer 103 in the output after being collected by the funnel, the tiny particle fertilizer of screw conveyer output is delivered to the granulator and is pelletized again, the large granule fertilizer is exported to the desiccator by finished product blown down tank 105 and is dried. A telescopic pipe is arranged at the discharge port of the discharge hopper of the vibrating screen 102, and when the vibrating screen 102 vibrates, the vibration can be prevented from being transmitted to the screw conveyor 103 through the telescopic pipe.

The granulated fertilizer granules enter the hopper 51 through the feeding conveyor belt 66 and are then dried by the drying drum 50. During the rotation of the drying drum 50, hot air is introduced from the hot air inlet 60 and then discharged from the hot air outlet 62 at the top of the discharging part 52 after passing through the drying drum 50. The fertilizer granule carries out the lifting through a pair of rectangular plate and the diaphragm of lifting portion, makes like this to stay the material time and obtains the extension, and hot-air area of contact also is showing the increase, and fertilizer granule drying effect is good, convenient to use. The dried fertilizer particles discharged from the dried fertilizer outlet 61 enter the silo scale 200.

The rack driving cylinder 215 drives the rack mechanism 214 to operate, the rotating shaft 212 rotates to drive the pair of bag feeding pneumatic fingers 213 to feed the grabbed packaging bags 220 to the bag opening station, the discharge port of the discharging pipeline of the bin type weighing scale 200 is composed of a pair of closed plates with right-angled triangle sections, and the closed plates are driven by the gear mechanism to be opened outwards at the same time. The tip of the outlet is inserted into the inlet end of the bag 220, the pneumatic fingers 210 for opening the bag are actuated to clamp the top ends of the bag 220, and the strap lifting assembly 203 is reset. The piston rod of the lifting cylinder 207 keeps at the extending position, the piston rod of the pressing cylinder 206 extends out to drive the L-shaped connecting plate 205 to rotate for a certain angle, so that the adsorption plate 204 is attached to the inclined plane of the blanking pipeline, and the side wall of the opening end of the packaging bag 220 is adsorbed by the vacuum chuck; the piston rod of the lifting cylinder 207 retracts to drive the L-shaped connecting plate 205 to rotate for a certain angle, and the feed inlet of the packaging bag 220 is pulled open; meanwhile, a piston rod of the transverse moving pushing cylinder 209 extends out to drive a bag opening pneumatic finger 210 to move and lean against the side wall of the discharging pipeline, and a pushing plate at the end part of the clamping plate 216 extrudes the packaging bag 220 inwards to enable the opening of the packaging bag 220 to be square; the material feeding pipeline of the bin type weighing scale 200 is connected, and the packaging bag 220 is filled with materials. After filling, the bag opening assembly 201 and the auxiliary opening assembly 202 are reset at the same time, and the bag mouth of the packaging bag 220 is pulled into a long strip shape and conveyed to the next station by the conveyor for sealing.

Claims

1. A fertilizer particle granulation production line is characterized by comprising a granulation device (500), a screening device (501), a drying device (502) and a blanking and packaging device (503) which are arranged in sequence,

the granulating device (500) comprises a shell (1), a feed hopper arranged at the upper part of the shell (1), a pair of granulating press rollers (3) arranged at the middle part of the shell (1) and a crushed material returning mechanism arranged at the lower part of the shell (1); the shell (1) is of a rectangular box-shaped structure, the feed hopper comprises an upper groove-shaped hopper (21), a middle square hopper (22) and a lower groove-shaped hopper (23) which are integrally formed, hopper grooves of the upper groove-shaped hopper (21) and the lower groove-shaped hopper (23) are both of a trapezoidal structure, a fertilizer feed pipe (9) is arranged above the upper groove-shaped hopper (21), a group of crushing rollers (24) is further arranged in the middle square hopper (22), a first filter screen plate (25) is arranged below the group of crushing rollers (24), and a pair of connecting plates (26) connected with the inner wall of the shell (1) is arranged at the bottom of the lower groove-shaped hopper (23); a pair of granulation compression rollers (3) is arranged below the lower groove-shaped hopper (23), cleaning brushes (4) are respectively arranged on the two sides of the pair of granulation compression rollers (3) and on the inner wall of the shell (1), and bristles of the cleaning brushes (4) are abutted to roller bodies of the pair of granulation compression rollers (3); a second filter screen plate (27) is obliquely arranged below the pair of granulation press rollers (3), and a granulation outlet part (5) is arranged at the connecting part of the lower end of the second filter screen plate (27) and the shell (1); the crushed material returning mechanism comprises a crushed material guide plate (6) obliquely arranged below the second filter screen plate (27), a returning pipe (7) and a returning pump (8) arranged on the returning pipe (7), one end of the returning pipe (7) is connected to the joint of the lower end of the crushed material guide plate (6) and the shell (1), and the other end of the returning pipe extends into the upper groove-shaped hopper (21);

the screening device (501) comprises a screening support (100), a disc roller screen (101), a vibrating screen (102) and a spiral conveyer (103), a group of vibrating screen supporting seats are arranged at the top of the screening support (100), an inclined roller screen support is arranged in the middle of the screening support (100), the vibrating screen (102) is mounted on the group of vibrating screen supporting seats through a compression spring, the feeding end of the vibrating screen (102) is located under the granulation outlet part (5), an arc-shaped discharge chute (104) is arranged at the discharge outlet of the vibrating screen (102), a discharge hopper is arranged at the bottom of the vibrating screen (102), a frame of the disc roller screen (101) is mounted on the inclined roller screen support, the feeding port of the disc roller screen (101) is communicated with the discharge outlet of the arc-shaped discharge chute (104), a finished product discharge chute (105) is arranged at the discharge outlet of the disc roller screen (101), and the feeding port of the finished product discharge chute (105) is larger than the discharge outlet, a discharging funnel is arranged at the bottom of the disc roller screen (101), a spiral conveyor (103) is installed at the bottom of the screening support (100), a first feeding hole and a second feeding hole are formed in the spiral conveyor (103), the discharging funnel of the vibrating screen (102) is communicated with the first feeding hole through a pipeline, and the discharging funnel of the disc roller screen (101) is communicated with the second feeding hole through a pipeline;

the drying device (502) comprises a drying roller (50), a feed hopper (51) arranged at one end of the drying roller (50) and a discharging part (52) arranged at the other end of the drying roller (50); a feeding belt (66) is arranged below a discharge hole of the finished product discharge groove (105), and a discharge end of the feeding belt (66) is positioned right above a feed hopper (51) of the drying roller (50); the drying drum (50) is arranged in an inclined mode, the feed hopper (51) is located at the higher end of the drying drum (50), a first supporting seat (53) is arranged below the front end of the drying drum (50), a first supporting rolling ring (54) rotatably connected with the drying drum (50) is arranged on the first supporting seat (53), a transmission gear (55) is installed on the drying drum (50), a drum driving motor (56) is further arranged on the first supporting seat (53), the drum driving motor (56) drives the transmission gear (55) to rotate through a speed reducer and a driving gear (57), a second supporting seat (58) is arranged below the rear end of the drying drum (50), and a second supporting rolling ring (59) rotatably connected with the drying drum (50) is arranged on the second supporting seat (58); a hot air inlet (60) is further formed in one side of the drying drum (50), the hot air inlet (60) is connected with an external heat source through a pipeline, the discharging portion (52) is arranged at the discharging end of the drying drum (50), a dried fertilizer outlet (61) is formed in the bottom of the discharging portion (52), and a hot air outlet (62) is formed in the top of the discharging portion (52); the drying drum (50) is internally provided with a plurality of material lifting parts, the material lifting parts are arranged along the length direction of the drying drum (50), each material lifting part comprises a pair of rectangular plates (63) with the tops connected and a pair of fan-shaped plates (64) for sealing the two sides of the rectangular plates (63), the bottoms of the rectangular plates (63) and the fan-shaped plates (64) are connected with the inner wall of the drying drum (50), and the tops of the rectangular plates (63) are also provided with a transverse plate (65) with the same length as the rectangular plates;

the blanking packaging device (503) comprises a bin type metering scale (200) which is arranged under a dry fertilizer outlet (61) and used for receiving materials, wherein two sides of a discharging port of a blanking pipeline of the bin type metering scale (200) are inclined planes, two sides of the blanking pipeline of the bin type metering scale (200) are respectively provided with a bag opening assembly (201), two ends of the blanking pipeline of the bin type metering scale (200) are respectively provided with an auxiliary opening assembly (202), a packaging belt lifting assembly (203) is arranged on the horizontal ground under the bin type metering scale (200), the bag opening assembly (201) comprises an adsorption plate (204), a pair of L-shaped connecting plates (205), a pressing cylinder (206) and a lifting cylinder (207), a group of sucker mounting holes are formed in the adsorption plate (204), vacuum suckers are arranged in the sucker mounting holes, a cylinder connecting lug seat is arranged on the adsorption plate (204), one end of the L-shaped connecting plate (205) is fixedly arranged on the adsorption plate (204), the corner ends of the pair of L-shaped connecting plates (205) are movably arranged on the outer wall of the blanking pipeline of the bin-type scale (200) through pin shafts, a cylinder barrel of the pressing cylinder (206) is movably arranged between the pair of L-shaped connecting plates (205), the end part of a piston rod of the pressing cylinder (206) is movably connected with a cylinder connecting lug seat of the adsorption plate (204), the end part of a cylinder barrel of the lifting cylinder (207) is movably arranged on the outer wall of the blanking pipeline of the bin-type scale (200), and the end part of a piston rod of the lifting cylinder (207) is movably connected with the other end of one L-shaped connecting plate (205); the auxiliary opening assembly (202) comprises an air cylinder supporting plate (208), a transverse pushing air cylinder (209) and a bag opening pneumatic finger (210), the air cylinder supporting plate (208) is fixedly installed on the outer wall of a discharging pipeline of the bin type metering scale (200), a sliding groove is formed in the bottom of the air cylinder supporting plate (208), a sliding rail matched with the sliding groove is arranged at the top of the bag opening pneumatic finger (210), the transverse pushing air cylinder (209) is installed at the bottom of the air cylinder supporting plate (208), and the end part of a piston rod of the transverse pushing air cylinder (209) is fixedly connected with the bag opening pneumatic finger (210); the packaging tape lifting assembly (203) comprises a lifting support (211), a rotating shaft (212), a pair of bag feeding pneumatic fingers (213), a rack and pinion mechanism (214) and a rack driving cylinder (215), wherein a rack sliding groove is formed in the lifting support (211), the rotating shaft (212) is movably mounted on the lifting support (211) through a bearing, the pair of bag feeding pneumatic fingers (213) are fixedly connected with the rotating shaft (212) through connecting arms respectively, a gear of the rack and pinion mechanism (214) is mounted at the end of the rotating shaft (212), a rack of the rack and pinion mechanism (214) is slidably mounted in the rack sliding groove, the rack driving cylinder (215) is mounted on the lifting support (211), and a power output shaft of the rack driving cylinder (215) is fixedly connected with one end of a rack of the rack and pinion mechanism (214).

2. A fertilizer granule granulating production line as claimed in claim 1, wherein a pair of jaws of the bag-opening pneumatic fingers (210) are respectively provided with a clamping plate (216), and the end of the clamping plate (216) is provided with a pushing plate.

3. A fertilizer granule granulating production line as claimed in claim 1, characterized in that the rack and pinion mechanism (214) and the rack driving cylinder (215) are replaced by a servo motor, and a power output shaft of the servo motor is in transmission connection with the end of the rotating shaft (212).

4. A granulated fertilizer production line as claimed in claim 1, characterized in that the top of the feed hopper is provided with a cover plate (10) closing the feed hopper, the cover plate (10) being provided with holes into which the fertilizer feed pipe (9) and the return pipe (7) extend.

5. A fertilizer granule granulating line as claimed in claim 1, wherein a plurality of the crushing rollers (24) are rotated by a plurality of first motors mounted on the outer wall of the upper part of the casing (1).

6. A granulated fertilizer production line according to claim 1, characterized in that the length of said middle square hopper (22) is the same as the length of the casing (1), and the width of the middle square hopper (22) is half of the width of the casing (1).

7. A fertilizer granule granulating line as claimed in claim 1, wherein a pair of granulating rolls (3) are rotated by a pair of second motors mounted on the outer wall of the middle portion of the casing (1).

8. A fertilizer granule granulating production line as claimed in claim 1, characterized in that each roller of the disc roller screen (101) is provided with a pair of chain wheels at the end thereof, two adjacent roller chain wheels are connected by a chain, and one of the rollers is driven to rotate by a motor.

9. A fertilizer granule granulation line as claimed in claim 1, characterized in that the finished product discharge chute (105) is detachably mounted at the discharge end of the disc roller screen (101) by means of bolts.

10. A fertilizer granule granulation line as claimed in claim 1, characterized in that the discharge opening of the discharge hopper of the vibrating screen (102) is provided with a telescopic tube, which is connected to the first feed opening of the screw conveyor (103) by a hard pipe.