A quantitative packaging device for fertilizer processing

Abstract

The invention discloses a fertilizer processing quantitative packaging device, including a mounting plate, a bulk barrel is mounted on the mounting plate through a support frame, an air delivery pipe is connected to the upper rear side of the bulk barrel, the air delivery pipe is used to connect the discharge pipe of an external pneumatic conveyor, a top cover is installed on the top of the bulk barrel, and level sensors for measuring the height of the fertilizer in the bulk barrel are arranged on both sides of the top cover; a control mechanism is arranged on one side of the mounting plate. The control mechanism combines the monitoring of the accumulated weight of the flow information input in real time by the microwave solid flowmeter and the monitoring of the accumulated weight of the weight information input in real time by the weighing and placing mechanism, and performs pre-measurement monitoring and analysis, so as to obtain the pre-measurement in a manner as a control signal in priority, and gradually control the placing mechanism to adjust the falling fertilizer flow, effectively reducing the weight error of the quantitative filling of urea granular fertilizer in the woven bag caused by the signal feedback time, thereby effectively reducing the filling weight error.

Description

Technical Field

[0001] The invention belongs to the technical field of fertilizer filling and packaging, and in particular relates to a fertilizer processing quantitative packaging device. Background Art

[0002] Carbamide, also known as urea, is usually packaged in woven bags and sealed with cotton thread for the convenience of delivery, storage and handling.

[0003] Since fertilizer factories produce urea in large quantities, urea is usually made into spherical granular products and quantitatively filled and sealed through quantitative packaging devices.

[0004] The utility model patent with authorization announcement number: CN215514263U discloses a quantitative filling equipment for fertilizer processing. The filling tank is fixed on the surface of the mounting frame, and the quantitative control mechanism is fixed at the bottom of the mounting frame. The quantitative control mechanism consists of a weighing device, a cable and a controller. The weighing device is electrically connected to the controller through the cable. During filling, the filling piece is placed on the weighing device, and the fertilizer inside the filling tank is filled into the filling piece through the guide pipe. During filling, the weighing device can weigh the weight of the filling and transmit the weight information to the controller. When the weight reaches the set value, the controller can automatically control the solenoid valve on the discharge pipe to close, which can prevent the discharge pipe from continuing to discharge material. The amount of discharge can be effectively controlled during filling, which is convenient for filling and improves the filling effect.

[0005] It can be seen that this filling method uses weighing at the bottom of the weighing device. When the weight reaches the set value, the feedback signal is sent to the controller, and the controller controls the solenoid valve to close, thereby achieving the purpose of quantitative filling. However, this quantitative filling method has certain defects: when the weighing of the weighing device reaches the set value, the fertilizer has already entered the discharge pipe located at the bottom of the solenoid valve, and the fertilizer will continue to fall, resulting in a certain amount of filling weight error.

[0006] Another common quantitative filling method is to install a microwave solid flow meter on the discharge pipe at the bottom of the filling tank. The microwave solid flow meter measures the millisecond-level particle flow of the free-falling granular fertilizer in the lower discharge pipe. Combined with the setting of the granular fertilizer density, the mass of the lower discharge fertilizer is calculated until the set weight value is reached. The PLC controller receives the command and controls the solenoid valve to close.

[0007] Therefore, in addition to the first defect, this quantitative filling method has an additional increase in the instability of the filling weight due to the uneven density of the fertilizer particles.

[0008] Therefore, it is necessary to provide a fertilizer processing quantitative packaging device that can effectively reduce filling errors to meet practical use. Summary of the invention

[0009] The purpose of the present invention is to provide a fertilizer processing quantitative packaging device to solve the problems existing in the prior art.

[0010] To achieve the above object, the present invention provides the following technical solutions: a fertilizer processing quantitative packaging device, comprising a mounting plate, a bulk barrel is mounted on the mounting plate through a support frame, an air delivery pipe is connected to the upper rear side of the bulk barrel, the air delivery pipe is used to connect to the discharge pipe of an external pneumatic conveyor, a top cover is installed on the top of the bulk barrel, and material level sensors for measuring the height of fertilizer in the bulk barrel are arranged on both sides of the top cover;

[0011] The lower end of the bulking cylinder is connected to a lower hopper, and a granulating mechanism is provided on the top cover, bulking cylinder and lower hopper. The granulating mechanism is used to granulate the granular fertilizer input into the bulking cylinder through the air delivery pipe and accelerate it to be discharged downward through the lower hopper;

[0012] The lower end of the lower hopper is connected to a lower feeding pipe, and side brackets are connected to both sides of the rear of the lower hopper, and the lower ends of the side brackets are connected to the mounting plate; a control and release mechanism is provided on the lower feeding pipe, and the control and release mechanism is used to control the flow rate of fertilizer discharged through the lower feeding hopper, and an angle measuring encoder matching the control and release mechanism is provided on one side of the lower feeding pipe; and a microwave solid flowmeter is provided on one side of the lower feeding pipe and at a position below the control and release mechanism, and the microwave solid flowmeter is used to monitor the flow rate of the fertilizer freely falling in the lower feeding pipe; a bag opening clamping mechanism is provided at the lower end of the lower feeding pipe, and the bag opening clamping mechanism is used to clamp the bag opening of the fertilizer woven bag;

[0013] A numerical control conveyor is arranged at the front of the mounting plate, and a weighing and lowering mechanism is arranged on the mounting plate and at the rear side of the numerical control conveyor, and the weighing and lowering mechanism is used to weigh the fertilizer packaged in the woven bag and lower it onto the conveyor belt of the numerical control conveyor;

[0014] A woven bag sewing sealer is arranged on the mounting plate and located at the side of the weighing and lowering mechanism, and the woven bag sewing sealer is used to sew and seal the filled woven bag with cotton thread;

[0015] A control mechanism is provided on one side of the mounting plate, and the control mechanism is used to analyze the material level height change information uploaded by the material level sensor in real time to control the operation of the bulk mechanism and the external pneumatic conveyor; by performing pre-measurement monitoring and analysis on the flow information input by the microwave solid flowmeter in real time and the weight information input by the weighing and lowering mechanism in real time, the pre-measurement is obtained in a preferential manner as a control signal, and the control and release mechanism is gradually controlled to adjust the flow of falling fertilizers, control the bag mouth clamping mechanism to release the woven bag mouth, and control the weighing and lowering mechanism to lower the woven bag filled with fertilizers onto the conveyor belt of the CNC conveyor.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] The fertilizer processing quantitative packaging device of the present invention is composed of a control mechanism that combines the monitoring of the accumulated weight of the flow information input in real time by the microwave solid flowmeter and the monitoring of the accumulated weight of the weight information input in real time by the weighing and placing mechanism, and performs pre-measurement monitoring and analysis, so as to preferentially obtain the pre-measurement as a control signal, and gradually control the placing mechanism to adjust the falling fertilizer flow rate, effectively reducing the weight error of the quantitative filling of urea granular fertilizer in the woven bag caused by the signal feedback time, thereby effectively reducing the filling weight error;

[0018] In addition, you only need to put the mouth of the woven bag into the discharge pipe and make the mouth of the woven bag contact the mounting ring. After the filling operation command is issued through the industrial computer, the bag mouth clamping mechanism can automatically clamp the mouth of the woven bag stably at the lower port of the discharge pipe, and automatically perform the filling and lowering work. It is easy to operate and has a high degree of automation. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a front view schematic diagram of the present invention;

[0020] Figure 2 for Figure 1 A partial cutaway diagram of

[0021] Figure 3 for Figure 1 A right side schematic diagram of

[0022] Figure 4 It is a schematic diagram of the second connection of the motor of the present invention;

[0023] Figure 5 It is a schematic diagram of the bag opening clamping mechanism in the present invention;

[0024] Figure 6 for Figure 2 A schematic diagram of the structure at a is enlarged;

[0025] Figure 7 It is a schematic diagram of the connection of various modules in the development board of the present invention.

[0026] In the figure: 1-mounting plate, 2-support frame, 3-bulk tube, 4-air delivery pipe, 5-top cover, 6-level sensor, 7-motor 1, 8-connecting shaft, 9-stirring plate, 10-fixed scraper, 11-lower hopper, 12-vibrator, 13-lower pipe, 14-side bracket, 15-mounting frame, 16-motor 2, 17-rotating shaft, 18-blocking piece, 19-angle measuring encoder, 20-microwave solid flowmeter, 21-mounting ring, 22-supporting swivel, 23-gear, 24-mounting block, 25-connecting plate, 26-hydraulic cylinder, 27-double-sided rack, 28-connecting frame, 29-clamping frame, 30-CNC conveyor, 31-woven bag sewing sealer, 32-weight sensor, 33-pressing plate, 34-sliding rod, 35-stop frame, 36-hydraulic motor, 37-swivel shaft, 38-flap, 39-support wire rack, 40-mounting frame, 41-control box, 42-development board, 43-programmable controller, 44-integrated relay, 45-driver, 101-industrial computer, 291-pressure ring. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0028] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 7 A fertilizer processing quantitative packaging device includes a mounting plate 1, a support frame 2 is fixed by bolts on the right rear of the mounting plate 1, a bulk barrel 3 is fixed by bolts on the top of the support frame 2, an air delivery pipe 4 is connected to the upper flange on the rear side of the bulk barrel 3, and the air delivery pipe 4 is used to connect the discharge pipe of an external pneumatic conveyor. When the pneumatic conveyor is running, the urea fertilizer particles in the silo can be discharged into the air delivery pipe 4 at high speed, and then discharged into the bulk barrel 3 through the air delivery pipe 4. A top cover 5 is installed on the top of the bulk barrel 3, and a material level sensor 6 for measuring the height of the fertilizer in the bulk barrel 3 is screwed on both sides of the top cover 5. The material level sensor 6 is a laser material level sensor, which calculates the material height data through the laser emission and reflection interval time; the purpose of setting two material level sensors 6 is to monitor the height of the fertilizer on both sides of the bulk barrel 3;

[0029] The flange at the lower end of the bulk cylinder 3 is connected to the lower hopper 11, which is a circular hopper structure that is wide at the top and narrow at the bottom. A granulating mechanism is provided on the top cover 5, the bulk cylinder 3 and the lower hopper 11. The granulating mechanism is used to granulate the granular fertilizer input into the bulk cylinder 3 through the air delivery pipe 4 and accelerate it to be discharged downward through the lower hopper 11.

[0030] The setting of the granulating mechanism can not only accelerate the discharge of the urea granular fertilizer in the scattering barrel 3 into the lower hopper 11, but also can quickly disperse and discharge the urea granules that are attached together in the urea fertilizer.

[0031] The flange at the lower end of the lower hopper 11 is connected to the lower feeding pipe 13. The lower feeding pipe 13 is a circular tube. The two sides of the rear of the lower hopper 11 are bolted to the top of the side bracket 14. The lower end of the side bracket 14 is bolted to the mounting plate 1. A control mechanism is arranged on the upper part of the lower feeding pipe 13. The control mechanism is used to control the flow rate of fertilizer discharged through the lower hopper 11. An angle measuring encoder 19 matching the control mechanism is arranged on the upper left side of the lower feeding pipe 13. The angle change of the control mechanism is monitored in real time through the angle measuring encoder 19, so as to provide strong assistance for the subsequent control of the steering angle of the control mechanism. A microwave solid flowmeter 20 is provided at the position, and the microwave solid flowmeter 20 is used to monitor the flow of the fertilizer falling freely in the feeding pipe 13, and uses millisecond-level microwave emission to capture the number v of urea fertilizer particles falling from the feeding pipe 13 at a fixed position, and intervenes in the set volume g and density data q of the urea fertilizer particles, calculates the real-time flow, and is used to detect the flow of urea discharged through the feeding pipe 13, and calculates the weight of the discharged urea particles according to the set urea particle density and particle size; a bag opening clamping mechanism is provided at the lower end of the feeding pipe 13, and the bag opening clamping mechanism is used to clamp the bag opening of the fertilizer woven bag;

[0032] A numerical control conveyor 30 is installed at the front of the mounting plate 1, and a weighing and lowering mechanism is arranged on the mounting plate 1 and at the rear side of the numerical control conveyor 30, and the weighing and lowering mechanism is used to weigh the fertilizer packaged in the woven bag and lower it onto the conveyor belt of the numerical control conveyor 30;

[0033] When the weighing and lowering mechanism is in operation, the weighing result obtained is the lead point of the action signal.

[0034] A woven bag sewing sealer 31 is arranged on the mounting plate 1 and at the side of the weighing and lowering mechanism. The woven bag sewing sealer 31 is used to sew and seal the filled woven bag with cotton thread.

[0035] After the urea fertilizer is quantitatively filled, it is conveyed to the left to the right side of the woven bag sewing sealer 31 through the CNC conveyor 30, and the mouth of the urea woven bag is manually pinched and inserted into the sewing mouth of the woven bag sewing sealer 31. The woven bag of urea fertilizer that has been filled is driven to move to the left at a uniform speed by the CNC conveyor 30, and the woven bag sewing sealer 31 also effectively sews and seals the belt mouth of the urea fertilizer woven bag to complete the packaging action.

[0036] A control mechanism is set at the rear right side of the mounting plate 1, and the control mechanism is used to analyze the material level height change information uploaded in real time by the material level sensor 6 to control the operation of the bulk mechanism and the external pneumatic conveyor; by pre-monitoring and analyzing the flow information input in real time by the microwave solid flowmeter 20 and the weight information input in real time by the weighing and lowering mechanism, the pre-measurement is obtained in a preferential manner as a control signal, and the control and release mechanism is controlled to adjust the flow of falling fertilizers, control the bag mouth clamping mechanism to release the woven bag mouth, and control the weighing and lowering mechanism to lower the woven bag filled with fertilizers to the conveyor belt of the CNC conveyor 30.

[0037] See also Figure 1 , Figure 2 and Figure 3 The top of the bulk tube 3 and the outer edge of the top cover 5 are both provided with a sealing groove, which is a circular groove structure. A sealing ring is pressed tightly in the sealing groove. The sealing ring is made of chloroprene rubber. The bulk tube 3 and the top cover 5 are flange-connected.

[0038] Under such an arrangement, the cooperation between the bulkhead 3 and the top cover 5 has good sealing performance.

[0039] See also Figure 1 , Figure 2 and Figure 3 The granulating mechanism includes a motor 7 fixed by bolts at the center of the top cover 5. The motor 7 is a stepping motor. The rotor shaft of the motor 7 passes through the top cover 5 and is flange-connected to the connecting shaft 8. The lower end of the connecting shaft 8 is flange-connected to the stirring plate 9. The bottom of the granulating cylinder 3 is evenly welded with a fixed scraper bar 10. The fixed scraper bar 10 is a strip structure with an equilateral triangle cross section and the tip is facing upward. A gap is set between the stirring plate 9 and the fixed scraper bar 10. The distance between adjacent fixed scrapers 10 is 5 mm, and the distance between the stirring plate 9 and the top of the fixed scraper bar 10 is 0.1 mm.

[0040] The vibration exciter 12 is fixed by bolts on both sides of the lower hopper 11, and the power line of the vibration exciter 12 is connected to the lower wiring pile of the external knife switch, and the upper wiring pile of the knife switch is connected to the external power supply through a cable.

[0041] When the urea granular fertilizer enters the dispersion barrel 3, the operation of the motor 7 drives the stirring plate 9 to rotate, thereby pushing and rotating the fertilizer granules near the fixed scraper bar 10. Under the action of the fixed scraper bar 10, the urea granules attached together in the urea fertilizer are effectively dispersed. In this process, the fluidity of the fertilizer granules is also accelerated, so that the urea fertilizer granules pass through the fixed scraper bars 10 more quickly and fall into the lower hopper 11. The high-frequency vibration of the exciter 12 accelerates the discharge of the urea fertilizer granules into the lower feed pipe 13.

[0042] See also Figure 1 , Figure 2 , Figure 3 , Figure 4The control and release mechanism includes a mounting frame 15 fixed by bolts on the upper right side of the feeding tube 13. The mounting frame 15 is a U-shaped frame. The right side of the mounting frame 15 is bolted to fix the motor 2 16. The motor 2 16 is a stepping motor. The rotor shaft of the motor 2 16 passes through the mounting frame 15 and is connected to the center position of the right end of the rotating shaft 17 by an interference key. The left and right sides of the upper part of the feeding tube 13 are interference-inserted into the sealed bearings, and the rotating shaft 17 is interference-inserted into the inner ring of the sealed bearing, so as to effectively and stably bear the rotation of the rotating shaft 17.

[0043] The rotating shaft 17 is provided with a sheet through hole, and a baffle 18 is slidably inserted into the sheet through hole. Bolts are screwed on both sides of the bottom of the sheet through hole. The bolts penetrate the baffle 18 and are threadedly locked on the inner top of the sheet through hole. The outer edge of the baffle 18 is provided with a ring blade and slides to contact the inner wall of the feeding tube 13.

[0044] An angle measuring encoder 19 is fixed by screws on the upper left side of the feeding tube 13 . The moving shaft of the angle measuring encoder 19 passes through the feeding tube 13 and is keyed to the center position of the left end of the rotating shaft 17 .

[0045] The operation of the motor 2 16 drives the rotation of the rotating shaft 17 and the baffle 18, thereby changing the flipping angle of the baffle 18 in the discharge pipe 13 and changing the opening size thereof, thereby controlling the flow of urea granular fertilizer that continues to be discharged through the discharge pipe 13. The angle measuring encoder 19 monitors the running angle and direction of the motor 2 16, providing a powerful condition for controlling the motor 2 16.

[0046] See also Figure 1 , Figure 2 , Figure 3 and Figure 5 The bag mouth clamping mechanism includes a mounting block 24 fixed by bolts to the middle part of the right side of the feeding tube 13, a connecting plate 25 is integrally arranged in the middle part of the right side of the mounting block 24, a hydraulic cylinder 26 is fixed by bolts on the top of the connecting plate 25, the inlet and outlet liquid interfaces of the hydraulic cylinder 26 are connected to the access end on one side of the external electromagnetic reversing valve through a pressure oil pipeline, and the access end on the other side of the external electromagnetic reversing valve is connected to the inlet and outlet oil ends of the external hydraulic pump through a pressure oil pipeline; the rotor shaft of the hydraulic cylinder 26 passes through the connecting plate 25 and is flange-connected to a double-sided rack 27, and the double-sided rack 27 is a rack with external teeth on both the front and rear sides;

[0047] The lower part of the feeding tube 13 is integrally provided with a mounting ring 21. The front and rear positions of the right side of the mounting ring 21 are both interference-mounted bearings. The inner ring of the bearing is interference-inserted into the support shaft 22. The right end of the support shaft 22 is connected to the gear 23 by an interference key, and the gear 23 is meshed with both sides of the double-sided rack 27.

[0048] The bottom of the gear 23 is cut flat, and the bottom of the gear 23 is fixed with a connecting frame 28 by bolts. The left end of the connecting frame 28 is fixed with a clamping frame 29 by bolts. The clamping frame 29 is a semicircular ring structure, and a pressure ring 291 is evenly arranged vertically in the clamping frame 29.

[0049] When the woven bag is inserted from the lower end of the feed tube 13 to the bottom of the contact mounting ring 21 , the top rod of the hydraulic cylinder 26 retracts, and the clamp frame 29 presses the mouth of the woven bag against the lower end of the feed tube 13 .

[0050] Therefore, through the operation of the bag opening clamping mechanism, the clamping frame 29 can effectively clamp and fix the bag opening of the woven bag, thereby preventing the bag opening of the woven bag from being separated from the lower end of the discharge pipe 13 during filling.

[0051] See also Figure 1 , Figure 2 and Figure 3 The weighing and lowering mechanism includes a loading slot provided in the mounting plate 1, the loading slot is a square slot structure, a weight sensor 32 is fixed by bolts in the loading slot, a pressure sensing end of the weight sensor 32 is fixed to a pressing plate 33 by a reversing bolt, and a sliding rod 34 is fixed to the four sides of the pressing plate 33 by bolts, and the sliding rod 34 passes through the mounting plate 1 upwards through a gap;

[0052] The top bolt of the sliding rod 34 fixes the baffle frame 35, and the size of the baffle frame 35 is set to meet the following requirements: after the woven bag is filled with urea granular fertilizer, the woven bag can be kept in a vertical position and will not block the falling of the filled woven bag, and when the woven bag falls and contacts the conveyor belt of the CNC conveyor 30, half of the height of the woven bag is located in the baffle frame 35; the right rear bolt of the baffle frame 35 fixes the hydraulic motor 36, and the maximum steering angle of the hydraulic motor 36 is set to 90° clockwise and counterclockwise. The reciprocating rotation adjustment of the hydraulic motor 36 is achieved by changing the direction of the hydraulic oil entering the interior; the inlet and outlet liquid ends of the hydraulic motor 36 are connected to one side access end of the external electromagnetic reversing valve through a pressure oil pipe, and the other side access end of the external electromagnetic reversing valve is connected to the inlet and outlet liquid ends of the external hydraulic pump through a pressure oil pipe. The driving shaft of the hydraulic motor 36 passes through the baffle frame 35 and is connected to the rotary shaft 37 by an interference key. A flap 38 is integrally provided at the front of the rotary shaft 37. A flat blade is provided at the front end of the flap 38, and the distance between the front end of the flap 38 and the baffle frame 35 is 1 mm.

[0053] When the flap 38 is horizontal, it effectively supports the bottom of the woven bag containing the urea granular fertilizer. When the flap 38 rotates 90° clockwise, the woven bag containing the urea granular fertilizer gradually slides down until it contacts the conveyor belt of the CNC conveyor 30.

[0054] The support wire frame 39 is fixed with bolts on the mounting plate 1 and close to the side position of the CNC conveyor 30. Insert pipes are integrally arranged on the left and right sides of the top of the support wire frame 39. The oil pressure pipes connected to the inlet and outlet ends of the hydraulic motor 36 are screwed tightly in the insert pipes. The length margin of the oil pressure pipe is set to meet the following requirements: when the baffle frame 35 moves slightly downward, the overall weight of the asymmetric lowering mechanism changes.

[0055] In addition, it is worth noting that when the bag mouth of the woven bag is inserted into the lower end of the discharge pipe 13 and contacts the lower end of the mounting ring 21, the bottom of the woven bag filled with urea granular fertilizer effectively contacts the horizontal flap 38, and the bag mouth clamping mechanism does not have a pulling effect on the woven bag. Therefore, the weight sensor 32 obtains the actual weight of the urea granular fertilizer and the partial weight of the woven bag.

[0056] See also Figure 1 , Figure 2 , Figure 3 The control mechanism includes a mounting frame 40 fixed by bolts on the right side of the mounting plate 1, a control box 41 fixed by bolts on the top of the mounting frame 40, a development board 42 fixed by screws on the upper left side of the control box 41 with an insulating pad, a programmable controller 43 fixed by screws in the control box 41 and at the side of the development board 42, three integrated relays 44 fixed by screws in the control box 41 and at the lower side of the development board 42, two drivers 45 fixed by screws in the control box 41 and at the side of the integrated relay 44, and an industrial computer 101 fixed by screws on the front panel of the control box 41;

[0057] Among them, the electrical control output end of the programmable controller 43 is connected to the control point electrical signal input end of each integrated relay 44 through a cable, the main power connection pole of each integrated relay 44 is connected to the external power supply through a cable, and the control position output end of each integrated relay 44 is respectively connected to two external electromagnetic reversing valve control position connection terminals and the power access end of the pneumatic conveyor through cables.

[0058] See also Figure 7 A selection control module and a transfer control module are set on the development board 42. The selection control module includes a weight signal receiving module and a flow signal receiving module. The weight signal receiving module is used to receive the weight signal input by the weight sensor 32 in real time. The transmission line of the weight sensor 32 is connected to the signal access pin of the weight signal receiving module. The flow signal receiving module is used to receive the flow signal input by the microwave solid flowmeter 20 in real time. The transmission line of the microwave solid flowmeter 20 is connected to the signal access pin of the flow signal receiving module.

[0059] The weight signal receiving module and the flow signal receiving module are connected to the analysis and processing module. The analysis and processing module is used to convert the flow signal and the weight signal into flow data and weight data, and respectively perform weight calculation in real time, and compare the calculation result with the pre-measurement in real time. The pre-measurement accumulated by the flow data is T, and the pre-measurement accumulated by the weight data is R. The initial flow pre-measurement is S, and S corresponds to the vertical downward direction of the baffle 18, that is, starting to rotate forward to 0.25r, where R is the total weight of the urea granular fertilizer in all woven bags after the weight of the woven bags and the mass of the remaining non-urea granular fertilizers are removed by the analysis and processing module. Whenever the flow data accumulates (1 / 2000)*T, the flow pre-measurement is reduced to (1 / 2000)*S, and an instruction to start reverse rotation (1 / 2000)*0.25r is issued in real time; and when the weight data accumulates to (199 / 200)*R, an instruction to start reverse rotation to nr is issued. After reverse rotation nr, the maximum gap between the outer edge of the baffle 18 and the discharge pipe 13 is the standard particle size of a single urea. Until the accumulated weight of the weight data reaches R, a horizontal reset instruction to start reverse rotation to 0.25r is issued, i.e., the signal of reaching the pre-measurement is given priority.

[0060] In addition, the microwave solid flowmeter 20 is arranged at a height that satisfies: the top of the microwave coverage area is flush with the bottommost side of the baffle 18 after it is reversely rotated nr.

[0061] The analysis and processing module is connected to the selection and start module, and the selection and start module is connected to the relay control module 1 and the relay control module 2. After obtaining the signal that the preset amount is reached first, the selection and start module first issues an operation instruction to the relay control module 1 to control the bag opening clamping mechanism to release the bag opening of the woven bag, and then issues an operation instruction to the relay control module 2 to control the weighing and lowering mechanism to lower the woven bag containing the fertilizer onto the conveyor belt of the CNC conveyor 30;

[0062] Furthermore, the signal output pins of the relay control input module 1 and the relay control input module 2 are connected to the signal access end of the programmable controller 43 through a signal line, and the integrated relay 44 that controls the hydraulic cylinder 26 and the signal receiving end of the integrated relay 44 that controls the hydraulic motor 36.

[0063] In addition, it is worth noting that the selection module will assign a front-end number to each relay control instruction, and both relay control input module 1 and relay control input module 2 only receive relay control instructions with a single front-end number, so there will be no confusion when the operating instructions issued by the programmable controller 43 to each integrated relay 44.

[0064] After the transfer control processing module and the analysis processing module receive the filling operation instruction from the mapping processing module, the analysis processing module controls the selection module to issue a command to control the hydraulic cylinder 26 push rod to retract to the relay control module. After the execution is completed, the analysis processing module issues a steering speed start operation instruction to the transfer control processing module, and the transfer control processing module issues a forward rotation to 0.25r to the steering speed control module; and after the weight data in the analysis processing module obtains a signal that the accumulated weight reaches R, the analysis processing module issues a signal to the transfer control processing module to start reverse rotation to The horizontal reset command of 0.25r is issued, and the reverse rotation to 0.25r command is completed. After the delay of n seconds, the push rod extension command is issued to the integrated relay 44 controlling the hydraulic cylinder 26, and the selection module is waiting for the push rod retraction command to be issued. After the execution is completed, the delay of c seconds is issued, and the clockwise rotation 90 degrees command is issued to the integrated relay 44 controlling the hydraulic motor 36. After the completion, the analysis and processing module will release the completion signal to the outside. After the execution is completed, the delay of b seconds is issued, and the reverse rotation 90 degrees reset command is issued to the integrated relay 44 controlling the hydraulic motor 36.

[0065] The rotation control module includes an angle pulse signal receiving module and a height signal receiving module. The angle pulse signal receiving module is used to receive the angle pulse signal of the angle measuring encoder 19 in real time. The signal line of the angle measuring encoder 19 is connected to the signal input pin of the angle pulse signal receiving module. The height signal receiving module is used to receive the material level height signal uploaded by the material level sensor 6 in real time. The signal line of the material level sensor 6 is connected to the signal input pin of the height signal receiving module; the angle pulse signal receiving module and the height signal receiving module are connected to the rotation control processing module for transmission. The analysis and processing module is connected to the rotation control processing module for bidirectional transmission. The rotation control processing module is connected to the speed control module, the steering digital control module and the relay control module three for transmission. The rotation control processing module is used to convert the angle pulse signal into angle information in real time, and convert the material level height signal into material level high-speed data in real time. According to the analysis and processing results of the analysis and processing module and the speed of change of the material level height signal, the speed control module is analyzed and controlled to output the speed control signal. In combination with the real-time angle information, the steering digital control module is analyzed and controlled to output the steering and speed signals. The relay control module three is analyzed and controlled to output the relay control signal.

[0066] The speed control module is used to control the speed of the granulating mechanism in real time. The signal output pin of the speed control module is connected to the signal input end of the driver 45 of the control motor 1 7 through a signal line. The steering speed control module is used to control the steering speed of the control mechanism in real time. The signal output pin of the steering speed control module is connected to the signal input end of the driver 45 of the control motor 2 16 through a signal line. The relay control module 3 is used to control the operation of the external pneumatic conveyor in real time. The signal output pin of the relay control module 3 is connected to the signal access end of the programmable controller 43 through a signal line. The front end of the relay control signal input by the speed control processing module to the relay control module 3 does not have a number, and is input by the programmable controller 43 to the signal input end of the integrated relay 44 for controlling the pneumatic conveyor;

[0067] The analysis and processing module inputs the speed and steering instructions into the rotation control processing module in real time, and the rotation control processing module inputs them to the steering CNC input module. After the steering CNC input module issues an operation instruction, the angle information obtained in real time is compared with it. If there is a difference in the angle, the target angle is used as the basic angle. The target angle is the angle value converted from the steering speed operation signal input in real time by the analysis and processing module. The difference between the angle value at this time and the basic angle is calculated. When the angle difference is negative, reverse rotation is required, and when the angle difference is positive, forward rotation is required. The angle compensation instruction is continued to be issued to the steering CNC input module until the basic angle is reached.

[0068] In addition, before the analysis and processing module inputs the horizontal reset instruction and the nr instruction into the transfer control processing module in real time, the speed control module outputs an execution speed of Dr / min. When the nr instruction is obtained, the transfer control processing module adjusts the execution speed output by the speed control module to (1 / 2)*Dr / min. When the horizontal reset instruction is obtained, the transfer control processing module adjusts the execution speed output by the speed control module to (1 / 4)*Dr / min. After the feedback of the hydraulic motor 36 executing the reverse rotation 90 degrees reset instruction signal obtained by the analysis and processing module is transmitted to the transfer control processing module, the transfer control processing module receives the feedback and readjusts the execution speed output by the speed control module to Dr / min.

[0069] The transfer control processing module also stores the target upper limit value J and lower limit value M. When the average value of the real-time input height data is lower than the upper limit value J, the transfer control processing module continues to issue instructions to the relay control module three for the pneumatic conveyor to continue running until the average value of the height data reaches the upper limit value J. The transfer control processing module then issues an instruction to the relay control module three for the pneumatic conveyor to stop running.

[0070] The analysis processing module and the transfer control processing module are bidirectionally connected to the mapping processing module. The signal access pin of the mapping processing module is connected to the signal access terminal of the industrial computer 101 through a signal line. The mapping processing module simulates the analysis processing module and the transfer control processing module in the form of table data, and maps the operation data of each module to the industrial computer 101 for display, so as to facilitate real-time observation of the operation of the quantitative packaging device;

[0071] In addition, when the analysis and processing module and the transfer control processing module issue control instructions, the instructions from the mapping processing module are given priority, and the driver 45 and the programmable controller 43 control program are stored in the industrial computer 101. The program is the same as the above-mentioned control simulation program. The industrial computer 101 can temporarily issue stop output control instructions and restart operation instructions to the analysis and processing module and the transfer control processing module.

[0072] The mapping processing module can also establish a data modification protocol between the analysis processing module and the transfer control processing module and the industrial computer 101, so that the T, R, S, nr, n, c, b, g, and q values ​​in the analysis processing module can be modified and set through the industrial computer 101, and the D, J, and M in the transfer control processing module can be modified and set, and the most recently input data is used as the data to be executed;

[0073] When the relay control module 1 and the relay control module 2 have finished running, the mapping processing module will feed back the completion instruction to the industrial computer 101. When the woven bag mouth is put back into the feeding pipe 13, the filling operation instruction can be issued to the analysis processing module and the transfer control processing module through the industrial computer 101.

[0074] In addition, it is worth noting that when inputting, it must satisfy: M ≥ (1 / 4) * J.

[0075] During the fertilizer filling process, when the flow data accumulation is ≥ (1 / 2000) * T, when the average value of the height data input in real time remains ≤ the lower limit value M for 0.5 seconds continuously, it indicates that the silo connected to the feeding pipe of the pneumatic conveyor is out of material, and the control processing module issues a command to reversely rotate to 0.25r to the steering control input module, and at the same time issues a command to the relay control input module 3 to stop the operation of the pneumatic conveyor. After the two feedback the action completion signal to the control processing module, the control processing module issues a command to stop the flow data accumulation and weight data accumulation to the analysis processing module, and the control processing module records the current speed control signal and the steering speed control signal; the analysis processing module records the flow data accumulation weight and the weight data accumulation weight, and replaces the flow data accumulation weight with the weight data accumulation weight. The next time the flow data is accumulated, it is accumulated based on the current weight. The analysis processing module and the control processing module are now waiting to receive the restart operation command from the industrial computer 101 input by the mapping processing module.

[0076] The working principle of this embodiment is as follows: the control mechanism combines the monitoring of the accumulated weight of the flow information input in real time by the microwave solid flowmeter 20 and the monitoring of the accumulated weight of the weight information input in real time by the weighing and placing mechanism, and performs pre-measurement monitoring and analysis, so as to obtain the pre-measurement in a preferential manner as a control signal, and gradually controls the placing mechanism to adjust the falling fertilizer flow rate, effectively reducing the weight error caused by the urea granular fertilizer injected into the feeding pipe 13 due to the signal feedback time on the quantitative filling of urea fertilizer granules in the woven bag, thereby effectively reducing the filling weight error;

[0077] In addition, it is only necessary to insert the bag mouth of the woven bag into the discharge pipe 13 and make the bag mouth of the woven bag contact the mounting ring 21. After the filling operation instruction is issued through the industrial computer 101, the bag mouth clamping mechanism can automatically and stably clamp the bag mouth of the woven bag at the lower end of the discharge pipe 13, and automatically perform the filling and lowering work, which is easy to operate and has a high degree of automation.

[0078] The above description is only a preferred embodiment of the present invention and is not intended to limit the protection scope of the present invention.

Claims

1. A fertilizer processing quantitative packaging device, characterized in that: It comprises a mounting plate (1), a bulk cylinder (3) being mounted on the mounting plate (1) via a support frame (2), an air delivery pipe (4) being arranged in communication with the upper rear portion of the bulk cylinder (3), the air delivery pipe (4) being used to connect to a discharge pipe of an external pneumatic conveyor, a top cover (5) being arranged on the top of the bulk cylinder (3), and material level sensors (6) for measuring the height of fertilizer in the bulk cylinder (3) being arranged on both sides of the top cover (5); The lower end of the bulking cylinder (3) is connected to a lower hopper (11), and a granulating mechanism is provided on the top cover (5), the bulking cylinder (3) and the lower hopper (11). The granulating mechanism is used to granulate the granular fertilizer input into the bulking cylinder (3) through the air delivery pipe (4) and accelerate the fertilizer to be discharged downward through the lower hopper (11); The lower end of the lower hopper (11) is connected to a lower feed pipe (13), and the two sides of the rear of the lower hopper (11) are connected to side brackets (14), and the lower ends of the side brackets (14) are connected to the mounting plate (1); a control and release mechanism is provided on the lower feed pipe (13), and the control and release mechanism is used to control the flow rate of fertilizer discharged through the lower feed pipe (11); an angle measuring encoder (19) matching the control and release mechanism is provided on one side of the lower feed pipe (13); a microwave solid flowmeter (20) is provided on one side of the lower feed pipe (13) and at a position below the control and release mechanism, and the microwave solid flowmeter (20) is used to monitor the flow rate of fertilizer freely falling in the lower feed pipe (13); a bag opening clamping mechanism is provided at the lower end of the lower feed pipe (13), and the bag opening clamping mechanism is used to clamp the bag opening of the fertilizer woven bag; A numerically controlled conveyor (30) is arranged in front of the mounting plate (1), and a weighing and lowering mechanism is arranged on the mounting plate (1) and at a position behind the numerically controlled conveyor (30), the weighing and lowering mechanism being used to weigh the fertilizer packaged in the woven bag and lower it onto the conveyor belt of the numerically controlled conveyor (30); A woven bag sewing sealer (31) is provided on the mounting plate (1) and located at the side of the weighing and lowering mechanism, and the woven bag sewing sealer (31) is used to sew and seal the filled woven bag with cotton thread; A control mechanism is provided on one side of the mounting plate (1), and the control mechanism is used to analyze the material level height change information uploaded in real time by the material level sensor (6) to control the operation of the granulating mechanism and the external pneumatic conveyor; by performing pre-measurement monitoring and analysis on the flow information input in real time by the microwave solid flow meter (20) and the weight information input in real time by the weighing and lowering mechanism, the pre-measurement is obtained in a preferential manner as a control signal, and the control and lowering mechanism is gradually controlled to adjust the flow rate of the falling fertilizer, control the bag opening clamping mechanism to release the woven bag opening, and control the weighing and lowering mechanism to lower the woven bag containing the fertilizer onto the conveyor belt of the numerical control conveyor (30); The control mechanism gradually controls the control and release mechanism to adjust the flow rate of the falling fertilizer by gradually reducing the flow rate until the maximum gap with the feeding pipe (13) is the standard particle size of a single urea particle, until the pre-measured signal is reached.

2. A fertilizer processing quantitative packaging device according to claim 1, characterized in that: The top of the bulk tube (3) and the outer edge of the top cover (5) are both provided with a sealing groove, in which a sealing ring is tightly pressed, and the bulk tube (3) and the top cover (5) are flange-connected.

3. A fertilizer processing quantitative packaging device according to claim 2, characterized in that: The granulating mechanism comprises a motor 1 (7) arranged at the center of the top cover (5), the rotor shaft of the motor 1 (7) passes through the top cover (5) and is connected to a connecting shaft (8), the lower end of the connecting shaft (8) is connected to a stirring plate (9), and fixed scraping strips (10) are evenly arranged at the bottom of the granulating cylinder (3), and a gap is set between the stirring plate (9) and the fixed scraping strips (10); Vibrators (12) are provided on both sides of the lower hopper (11).

4. A fertilizer processing quantitative packaging device according to claim 3, characterized in that: The control and release mechanism comprises a mounting frame (15) connected to one side of the feed tube (13); a second motor (16) is mounted on the mounting frame (15); a rotor shaft of the second motor (16) passes through the mounting frame (15) and is connected to a rotating shaft (17); the rotating shaft (17) is rotatably disposed in the feed tube (13); The rotating shaft (17) is provided with a baffle (18), and an annular blade is provided on the outer edge of the baffle (18) so as to slide in contact with the inner wall of the feeding tube (13); An angle measuring encoder (19) is installed on an upper portion of one side of the feed tube (13); a movable shaft of the angle measuring encoder (19) passes through the feed tube (13) and is connected to a central position of one end of the rotating shaft (17).

5. A fertilizer processing quantitative packaging device according to claim 4, characterized in that: The bag opening clamping mechanism comprises a mounting block (24) mounted in the middle of one side of the feeding tube (13); a connecting plate (25) is provided in the middle of one side of the mounting block (24); a hydraulic cylinder (26) is mounted on the connecting plate (25); a rotor shaft of the hydraulic cylinder (26) passes through the connecting plate (25) and is connected to a double-sided rack (27); The discharge tube (13) is provided with a mounting ring (21), and a support shaft (22) is rotatably provided at the front and rear positions of one side of the mounting ring (21), and a gear (23) is provided at one end of the support shaft (22), and the gear (23) is meshed with two sides of the double-sided rack (27); The bottom of the gear (23) is connected to a clamping frame (29) via a connecting frame (28), and pressure rings (291) are evenly arranged inside the clamping frame (29); When the woven bag is inserted from the lower end of the feed tube (13) to the bottom of the contact mounting ring (21), the top rod of the hydraulic cylinder (26) is retracted, and the clamping frame (29) presses the mouth of the woven bag tightly against the lower end of the feed tube (13).

6. A fertilizer processing quantitative packaging device according to claim 5, characterized in that: The weighing and lowering mechanism comprises a loading slot provided in the mounting plate (1), a weight sensor (32) being installed in the loading slot, a pressure plate (33) being installed at the pressure-sensing end of the weight sensor (32), sliding rods (34) being connected to four sides of the pressing plate (33), and the sliding rods (34) passing through the mounting plate (1); The top of the sliding rod (34) is connected to a baffle frame (35), a hydraulic motor (36) is installed at the rear of one side of the baffle frame (35), a drive shaft of the hydraulic motor (36) passes through the baffle frame (35) and is connected to a rotary shaft (37), and a flap (38) is provided at the front of the rotary shaft (37); A support wire rack (39) is provided on the mounting plate (1) and near the side of the numerical control conveyor (30), a plug is provided on the top of the support wire rack (39), and a pressure oil pipe connected to the inlet and outlet ends of the hydraulic motor (36) is fixedly arranged in the plug.

7. A fertilizer processing quantitative packaging device according to claim 6, characterized in that: The control mechanism comprises a mounting frame (40) mounted on one side of a mounting plate (1); a control box (41) is connected to the top of the mounting frame (40); a development board (42) is arranged on one side of the control box (41); a programmable controller (43) is arranged in the control box (41) and located at a side position of the development board (42); an integrated relay (44) is arranged in the control box (41) and located at a lower side position of the development board (42); a driver (45) is arranged in the control box (41) and located at a side position of the integrated relay (44); and an industrial computer (101) is installed on the front panel of the control box (41).

8. A fertilizer processing quantitative packaging device according to claim 7, characterized in that: The development board (42) is provided with a selection control module and a rotation control module, the selection control module comprising a weight signal receiving module and a flow signal receiving module, the weight signal receiving module being used to receive in real time a weight signal input in real time by a weight sensor (32), and the flow signal receiving module being used to receive in real time a flow signal input in real time by a microwave solid flow meter (20); The weight signal receiving module and the flow signal receiving module are connected to an analysis and processing module, the analysis and processing module is used to convert the flow signal and the weight signal into flow data and weight data, and respectively perform weight calculation in real time, and compare the calculation result with the pre-measurement in real time; the analysis and processing module is connected to a selection and start module, and the selection and start module is connected to a relay control module 1 and a relay control module 2. After obtaining a signal that the pre-measurement is reached first, the selection and start module first issues an operation instruction to the relay control module 1 to control the bag opening clamping mechanism to release the bag opening of the woven bag, and then issues an operation instruction to the relay control module 2 to control the weighing and lowering mechanism to lower the woven bag containing the fertilizer onto the conveyor belt of the numerical control conveyor (30); The rotation control module comprises an angle pulse signal receiving module and a height signal receiving module, wherein the angle pulse signal receiving module is used to receive the angle pulse signal of the angle measuring encoder (19) in real time, and the height signal receiving module is used to receive the material level height signal uploaded by the material level sensor (6) in real time; the angle pulse signal receiving module and the height signal receiving module are connected to the rotation control processing module in transmission, and the analysis processing module is connected to the rotation control processing module in bidirectional transmission, and the rotation control processing module is connected to the speed control module, the steering rotation numerical control module and the relay control module 3 in transmission, and the rotation control processing module is used to convert the angle pulse signal into angle information in real time, and convert the material level height signal into material level high-speed data in real time, and analyze and control the speed control module to output the speed control signal according to the analysis and processing result of the analysis processing module and the speed of change of the material level height signal, analyze and control the speed control module to output the speed control signal, analyze and control the steering rotation numerical control module to output the steering and rotation speed signals in combination with the angle information obtained in real time, and analyze and control the relay control module 3 to output the relay control signal; The speed control module is used to control the speed of the granulating mechanism in real time, the steering speed control module is used to control the steering speed of the control mechanism in real time, and the relay control module 3 is used to control the operation of the external pneumatic conveyor in real time; The analysis processing module and the transfer control processing module are bidirectionally connected to the mapping processing module, and the mapping processing module maps the operation data of each module to the industrial control computer (101) for display in the form of table data simulation, and can issue a stop output control instruction and a restart operation instruction to the analysis processing module and the transfer control processing module through the industrial control computer (101).

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