Sampling detection device for fertilizer processing

Abstract

The invention discloses a sampling detection device for fertilizer processing, and belongs to the technical field of fertilizer sampling detection, the sampling detection device comprises a support pedestal and a numerical control conveyor arranged on the side of the support pedestal, and the numerical control conveyor is provided with a fertilizer particle positioning mechanism; a connecting frame is mounted at the top of the supporting pedestal, and a rotary separation mechanism is arranged on one side of the connecting frame; a moving mechanism is arranged on the supporting pedestal; a mounting stand column is connected to the position, close to the moving mechanism, of the supporting pedestal, and a dissolving speed detection mechanism is mounted at the top of the mounting stand column; a connecting and supporting column is arranged on the other side of the supporting pedestal, a control box is arranged on the top of the connecting and supporting column, an industrial personal computer is installed on a box cover of the control box, and a control mechanism is arranged in the control box. Manual sampling of fertilizer particles on a conveying belt of a numerical control conveyor is not needed, manual collection of dissolution change records of the fertilizer particles in each batch is not needed, the method is suitable for the situation that the batch amount of the slow-release urea fertilizer produced every day is large, and use is convenient.

Description

Technical Field

[0001] The invention belongs to the technical field of fertilizer sampling and detection, and in particular relates to a sampling and detection device for fertilizer processing. Background Art

[0002] During the granulation process of slow-release urea fertilizer, in addition to manual sampling and testing the particle size of urea fertilizer particles by a particle size analyzer, and testing the moisture content of particles by drying, weighing and comparison, it is also necessary to test the slow-release performance of the slow-release urea fertilizer particles.

[0003] At present, hydrolyzed amino acids or humic acid, alginic acid water-soluble ammonium, potassium salt, nitrification inhibitors, conditioners are added, and then the solution is added to the saturated solution of nitrogen fertilizer synergist for material mixing and stirring. The reaction time is 30-60 minutes. After the reaction is completed, a coating agent and a surfactant are added, and the slag is removed and filtered to complete the preparation of the slow-release liquid; the above-mentioned slow-release liquid is sent to a heating high-level tank to be heated to 85-100°C, and then a pneumatic ejector is used to atomize the slow-release liquid with compressed air as the medium, and it is sprayed into the middle and lower part of the urea granulation tower. The droplets contact with the falling urea particles. Under mechanical stirring, the slow-release composition can penetrate into the interior of the urea particles and form slow-release urea with the help of waste heat.

[0004] It can be seen that there are many aspects that affect the slow-release effect of this slow-release urea fertilizer. On the one hand, it is the accuracy of the slow-release liquid ratio, and on the other hand, it is the penetration ability of the slow-release liquid. In the actual batch production process, there is a certain error in the ratio of the slow-release liquid in different batches of production. In addition, the penetration and solidification of the slow-release liquid are affected by the residual heat of the actual existence. Therefore, there are certain differences in the slow-release performance of different batches of slow-release urea fertilizers. In order to achieve quality control of the slow-release ability of this slow-release urea fertilizer, it is usually necessary to sample according to the production batches and detect the slow-release ability through the water-soluble timing method.

[0005] However, in the process of manual sampling and testing, not only the amount of fertilizer particles in each batch needs to be collected and loaded into the test tube, but also the dissolving liquid needs to be added in equal amounts. In addition, since the slow-release capacity of each batch of fertilizer needs to be counted, the time period from the addition of the dissolving liquid to the dissolution of the fertilizer particles needs to be accumulated and recorded, so the testers need to check the dissolution of the fertilizer particles in real time. In addition, the batches of slow-release urea fertilizer produced every day are large, and the sampling and observation and recording operations are relatively frequent, which is not very convenient for the operators. Summary of the invention

[0006] The object of the present invention is to provide a sampling and detection device which can realize automatic sampling of multiple batches of slow-release urea fertilizers and automatically and effectively perform dissolution time tests, so as to solve the problems existing in the prior art.

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a sampling and testing device for fertilizer processing, comprising a support pedestal and a numerically controlled conveyor arranged on the side of the support pedestal, the numerically controlled conveyor being provided with a fertilizer particle positioning mechanism, the fertilizer particle positioning mechanism being used to spread the fertilizer particles on the conveyor belt of the numerically controlled conveyor, and to detect the distribution of the fertilizer particles on the conveyor belt of the numerically controlled conveyor in real time, and to determine the fertilizer particle path points in combination with the conveying speed information of the numerically controlled conveyor; A connecting frame is installed on the top of the support pedestal, a rotary separation mechanism is arranged on one side of the connecting frame, test tubes are evenly inserted in a circumferential direction on the rotary separation mechanism, a reinforcing plate is arranged on one side of the support pedestal, a particle injection mechanism is installed on the reinforcing plate and the top of one side of the support pedestal, the particle injection mechanism is used to suck fertilizer particles from the conveyor belt of the numerical control conveyor, and quantitatively inject fertilizer particles into the test tubes inserted on the rotary separation mechanism; and the rotary separation mechanism is used to drive the test tubes to perform rotational position adjustment, so as to change the test tubes into which the fertilizer particles are injected by the particle injection mechanism; a mounting vertical plate is arranged on the connecting frame and at the side of the rotary separation mechanism, a laser inkjet printer is installed on the mounting vertical plate, and the laser inkjet printer is used to perform laser inkjet numbering on the test tubes; The support base is provided with a moving mechanism, and a suction and injection mechanism is installed on the top of the moving mechanism, and the suction and injection mechanism is used to cooperate with the lifting operation of the moving mechanism to realize the injection of dissolved liquid into the test tube and the suction and lifting of the test tube; A mounting column is connected to the support seat and close to the moving mechanism, and a dissolution rate detection mechanism is installed on the top of the mounting column. The dissolution rate detection mechanism is used to cooperate with the test tube release action of the suction and injection mechanism and the forward and backward displacement operation of the moving mechanism to store the test tube in a warm state and to check the dissolution of the fertilizer particles in the test tube; A connecting column is arranged on the other side of the support base, and a control box is arranged on the top of the connecting column. An industrial computer is installed on the box cover of the control box, and a control mechanism is arranged in the control box. The control mechanism is used to analyze and control the injection mechanism to suck a set amount of fertilizer particles from the conveyor belt of the numerical control conveyor according to the time when different batches of fertilizer particles are lowered to the numerical control conveyor and the fertilizer particle positioning information fed back by the fertilizer particle positioning mechanism, and inject different batches of fertilizer particles into each test tube on the rotary separation mechanism; according to the completion of the injection of the injection mechanism, control the rotary separation mechanism to exchange the positions of the test tubes to be injected with fertilizer particles and the test tubes injected with fertilizer particles; input the batch number into the laser inkjet printer, and control the laser inkjet printer to perform laser inkjet numbering on the test tubes; control the operation of the moving mechanism and the suction and injection mechanism according to the operation of the injection mechanism and the rotary separation mechanism, and coordinate the operation of the moving mechanism and the suction and injection mechanism with the heat preservation storage of the dissolution rate detection mechanism; access the dissolution of the fertilizer particles in each test tube detected by the dissolution rate detection mechanism in real time, and perform calibration analysis.

[0008] Compared with the prior art, the present invention has the following beneficial effects: In the present invention, under the control of the control mechanism, the sampling time of fertilizer particles and the loading and detection time are planned according to the distribution time of different batches, the fertilizer particles on the conveyor belt of the numerical control conveyor are spread by the fertilizer particle positioning mechanism, and the image is captured. Under the intervention of the control mechanism, the fertilizer particles corresponding to the left and right horizontal coordinates on the conveyor belt of the numerical control conveyor and the lower end of the particle suction tube are detected in real time, and the rotation mechanism and the particle injection mechanism are controlled to sample the fertilizer particles of each batch in equal amounts within the planned sampling time period. After the sampling of all batches of fertilizer particles is completed, the moving mechanism and the suction and injection mechanism are controlled to load each test tube on the rotation mechanism into the dissolution speed detection mechanism in turn, and the dissolving solution is added in equal amounts one by one. The test tubes are kept warm at a suitable temperature by the dissolution speed detection mechanism, and the time from the injection of the dissolving solution to the dissolution of the fertilizer particles in each test tube is measured.

[0009] There is no need to manually sample the fertilizer particles on the conveyor belt of the CNC conveyor, nor is there any need to manually record the dissolution changes of the fertilizer particles collected in each batch. It is suitable for the situation where a large number of batches of slow-release urea fertilizers are produced every day and is easy to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a front view schematic diagram of the present invention; Figure 2 for Figure 1 A partial cutaway diagram of Figure 3 It is a schematic cross-sectional view of the illumination frame in the present invention; Figure 4 for Figure 1 A top view schematic diagram of Figure 5 It is a top view schematic diagram of the turntable of the present invention; Figure 6 for Figure 4 An enlarged structural diagram of the moving mechanism in the middle; Figure 7 for Figure 2 An enlarged structural diagram of the middle suction and injection mechanism; Figure 8 for Figure 2 A schematic diagram of the enlarged structure of the dissolution rate detection mechanism; Fig. 9 It is an enlarged structural diagram of the control mechanism in the present invention; Fig.10 It is a schematic diagram of the connection of each module in the development board of the present invention.

[0011] In the figure: 1 support base, 2 CNC conveyor, 3 scraper, 4 side plate, 5 lighting frame, 6 cdd camera, 7 fill light, 8 connecting frame, 9 reinforcement plate, 10 motor 1, 11 rotating plate, 12 rotating disk, 13 test tube, 14 installation plate, 15 laser inkjet printer, 16 installation column, 17 top connecting plate, 18 support frame, 19 reinforcement plate, 20 row bucket, 21 lower row pipe, 22 electric butterfly valve, 23 particle row pipe, 24 suction pump, 25 sealing top cover, 26 upper pipe, 27 soft connecting pipe, 28 support plate, 29 electric telescopic rod 1, 30 reflector, 31 laser distance measurement device, 32 suction tube, 33 mounting support plate, 34 lead screw, 35 moving seat, 36 slide bar, 37 motor 2, 38 connecting support plate, 39 electric telescopic rod 2, 40 connecting frame, 41 motor 3, 42 top connecting plate, 43 spray pipe, 44 three-way, 45 pressure control valve, 46 exhaust pump, 47 one-way valve, 48 flow control valve, 49 chemical booster pump, 50 joint, 51 access hose, 52 mounting column, 53 outer frame, 54 insulation layer, 55 thermal conductivity bottle, 56 ultrasonic probe, 57 PTC heating belt, 58 temperature sensor, 59 thermal conductive column, 60 thermal conductive plate, 61 semiconductor refrigeration sheet, 62 heat dissipation fin, 63 cooling fan, 64 servo, 65 flip cover, 66 insulation board, 67 cover, 68 supporting column, 69 control box, 70 development board, 71 driver, 72 programmable controller, 73 integrated relay, 74 thermostat, 75 industrial computer, 201 filter plate, 401 pressure sealing ring. DETAILED DESCRIPTION

[0012] 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.

[0013] See also Figure 1 , Figure 2 and Figure 4 , a sampling and testing device for fertilizer processing, comprising a support base 1 and a CNC conveyor 2 bolted to the left side of the support base 1, the CNC conveyor 2 is used to convey the slow-release urea fertilizer particles from the lower row of the granulator, the conveying speed A of the CNC conveyor 2 is set to 0.3m / s, and a fertilizer particle positioning mechanism is provided on the CNC conveyor 2, the fertilizer particle positioning mechanism is used to spread the fertilizer particles on the conveyor belt of the CNC conveyor 2, and to detect the distribution of the fertilizer particles on the conveyor belt of the CNC conveyor 2 in real time, and to determine the fertilizer particle path point in combination with the conveying speed information of the CNC conveyor 2; By spreading the fertilizer granules under the positioning mechanism, fertilizer accumulation is avoided, and the quantitative suction operation of the granulation mechanism is enabled.

[0014] The top of the support pedestal 1 is bolted to the connecting frame 8, and a rotary separation mechanism is installed on the right side of the connecting frame 8. Test tubes 13 are evenly inserted in the circumferential direction on the rotary separation mechanism. A reinforcing plate 9 is welded on the left side of the support pedestal 1. A granulation mechanism is installed on the reinforcing plate 9 and the top side of the support pedestal 1. The granulation mechanism is used to suck fertilizer particles from the conveyor belt of the numerical control conveyor 2 and quantitatively inject fertilizer particles into the test tube 13 inserted on the rotary separation mechanism; and the rotary separation mechanism is used to drive the test tube 13 to perform a rotational position adjustment, thereby changing the test tube 13 corresponding to the injection mechanism to inject fertilizer particles; Under such an arrangement, multiple batches of slow-release urea fertilizer granules can be sampled and loaded into the test tubes 13 respectively.

[0015] A vertical plate 14 is fixedly installed on the connecting frame 8 and located on the left side of the rotary separation mechanism by bolts, and a laser inkjet printer 15 is fixedly installed on the vertical plate 14 by bolts. The laser inkjet printer 15 is used to perform laser inkjet numbering on the test tube 13; The laser coder 15 is used to code and number each test tube 13, so that the slow-release urea granules sampled from different batches can be effectively classified.

[0016] A moving mechanism is provided on the support base 1, and a suction mechanism is installed on the top of the moving mechanism. The suction mechanism is used to cooperate with the lifting operation of the moving mechanism to realize the injection of dissolved liquid into the test tube 13 and the suction and lifting of the test tube 13; The moving mechanism drives the suction mechanism to descend and align with the test tube 13. The negative pressure of the suction mechanism sucks the top of the test tube 13, and the moving mechanism rises, driving the test tube 13 to separate from the spinning mechanism; when the moving mechanism drives the test tube 13 to rotate 180° and descend, the test tube 13 containing the slow-release urea fertilizer granules can be placed in the dissolution rate detection mechanism, the suction mechanism releases the test tube 13, and injects an equal amount of dissolved liquid into the test tube 13, the moving mechanism rises, rotates 180° in the opposite direction, and the suction mechanism is reset.

[0017] A mounting column 52 is fixed with bolts on the right side of the support base 1 and close to the position of the moving mechanism. A dissolution rate detection mechanism is installed on the top of the mounting column 52. The dissolution rate detection mechanism is used to cooperate with the test tube 13 release action of the suction injection mechanism and the forward and backward displacement operation of the moving mechanism to store the test tube 13 in a warm state and to check the dissolution of the fertilizer particles in the test tube 13. The left side of the support pedestal 1 is bolted to the connecting column 68, the top of the connecting column 68 is bolted to the control box 69, the cover of the control box 69 is bolted to the industrial computer 75, and the control mechanism is installed in the control box 69. The control mechanism is used to analyze and control the injection mechanism to suck a set amount of fertilizer particles from the conveyor belt of the numerical control conveyor 2 according to the time when different batches of fertilizer particles are placed on the numerical control conveyor 2 and the fertilizer particle positioning information fed back by the fertilizer particle positioning mechanism, and inject different batches of fertilizer particles into each test tube 13 on the rotary separation mechanism; according to the injection time, the fertilizer particles are placed on the numerical control conveyor 2 according to the time when different batches of fertilizer particles are placed on the numerical control conveyor 2 and the fertilizer particle positioning information fed back by the fertilizer particle positioning mechanism. The device controls the cyclone mechanism to swap the positions of the test tubes 13 to be injected with the fertilizer particles according to the completion of the granulation of the mechanism; inputs the batch number into the laser coder 15, and controls the laser coder 15 to perform laser coding on the test tubes 13; controls the operation of the moving mechanism and the suction and injection mechanism according to the operation of the granulation mechanism and the cyclone mechanism, and coordinates the operation of the moving mechanism and the suction and injection mechanism with the heat preservation storage of the dissolution rate detection mechanism; accesses the dissolution of the fertilizer particles in each test tube 13 detected by the dissolution rate detection mechanism in real time, and performs calibration analysis.

[0018] See also Figure 1 , Figure 2 , Figure 3 and Figure 4 The fertilizer particle positioning mechanism includes side plates 4 bolted to the left and right sides of the top of the CNC conveyor 2, and a scraper 3 is integrally arranged between the side plates 4. The scraper 3 is used to flatten the fertilizer particles on the conveyor belt of the CNC conveyor 2. The height of the scraper 3 satisfies: the vertical distance between the bottom end of the scraper 3 and the conveyor belt of the CNC conveyor 2 is 0.2 mm higher than that of a slow-release fertilizer particle of standard particle size, so that a single slow-release fertilizer particle can pass through the lower part of the scraper 3; the front part of the scraper 3 is bolted to a lighting frame 5, and the lighting frame 5 is a square cover frame structure with an opening at the lower end. The top middle side of the lighting frame 5 is bolted to a cdd camera 6, and the top left and right sides of the lighting frame 5 are also screwed to fix a fill light 7, which is a three-primary color LED fill light. The lower end of the lighting frame 5 is 2 mm away from the conveyor belt of the CNC conveyor 2, and the height of the cdd camera 6 satisfies: it can cover the area of ​​the conveyor belt covered by the lighting frame 5.

[0019] The scraper 3 flattens the fertilizer particles on the conveyor belt of the numerical control conveyor 2, and the CDD camera 6 captures the image of the slow-release urea fertilizer particles on the conveyor belt of the numerical control conveyor 2 in real time, which is used for the capture and movement position calculation of the slow-release urea fertilizer particles of the control mechanism.

[0020] See also Figure 1 , Figure 2 , Figure 4 and Figure 5The rotary mechanism includes a motor 10 bolted to the right side of the bottom of the connecting frame 8, the motor 10 is a stepping motor, the rotor shaft of the motor 10 passes through the connecting frame 8 and is connected to the rotating plate 11 by an interference key, a rotary disk 12 is integrally arranged on the outer side of the rotating plate 11, and test tube grooves for inserting test tubes 13 are evenly arranged on the rotary disk 12 in an annular direction; an annular label paper is pasted on the upper side of the outer side of each test tube 13, and the annular label paper is used to receive the laser coding of the laser coding device 15, the bottom of the connecting frame 8 and the side position of the motor 10 are bolted to fix the mounting column 16, and the bottom bolts of the mounting column 16 are fixed to the support base 1.

[0021] The rotation drive of the motor 10 can drive the positions of the test tubes 13 in the rotating disk 12 to change.

[0022] See also Figure 1 , Figure 2 and Figure 4 The pelletizing mechanism includes a reinforcing plate 9 and a top connecting plate 17 bolted to the top of the supporting pedestal 1, the left side of the top connecting plate 17 is bolted to the supporting frame 18, the right side of the supporting frame 18 is bolted to the reinforcing plate 19, the right end of the reinforcing plate 19 is bolted to the discharge bucket 20, a lower discharge pipe 21 is integrally arranged at the bottom of the discharge bucket 20, the lower end flange of the lower discharge pipe 21 is connected to the electric butterfly valve 22, the discharge end flange of the electric butterfly valve 22 is connected to the pelletizing pipe 23, and the right side of the top connecting plate 17 is fused to the pelletizing pipe 23; An inlet pipe is integrally provided on the right side of the bucket 20, and a filter plate 201 is bolted to the port of the inlet pipe, and the mesh diameter of the filter plate 201 is 0.1 mm; the right end flange of the inlet pipe is connected to the suction pump 24; the top outer edge of the bucket 20 and the bottom outer edge of the sealing top cover 25 are both provided with sealing ring grooves, and a rubber sealing ring is pressed in the sealing ring groove, and the bucket 20 and the sealing top cover 25 are flange-connected to ensure the sealing of the two. An upper connecting pipe 26 is integrally provided in the middle of the sealing top cover 25, and a soft connecting pipe 27 is inserted into the upper connecting pipe 26 and tightened by a throat hoop, and the other end of the soft connecting pipe 27 is inserted into the particle suction pipe 32 and tightened by a throat hoop; The lower end of the top of the support frame 18 is bolted to the electric telescopic rod 29, the top rod flange of the electric telescopic rod 29 is connected to the support plate 28, and the support plate 28 is fixed to the particle suction pipe 32 with screws; The inner diameters of the lower ports of the particle suction pipe 32 and the particle discharge pipe 23 are both sufficient to pass one slow-release urea fertilizer particle.

[0023] A reflective plate 30 is bonded to the upper right side of the support plate 28 , and a laser rangefinder 31 is bolted to the right side of the top of the support frame 18 corresponding to the position of the reflective plate 30 .

[0024] When the top rod of the electric telescopic rod 29 is extended to the specified position, the suction pump 24 starts running, and the electric butterfly valve 22 is closed, so that the slow-release urea fertilizer particles can be sucked from the conveyor belt of the CNC conveyor 2 through the particle suction pipe 32, and then discharged into the discharge bucket 20 through the flexible connecting pipe 27. The suction pump 24 stops running, and the electric butterfly valve 22 opens, and the slow-release urea fertilizer particles in the discharge bucket 20 are discharged into the lower test tube 13 through the particle discharge pipe 23.

[0025] When the push rod of the electric telescopic rod 29 is retracted and the electric butterfly valve 22 is closed, the pelletizing mechanism is reset.

[0026] During this process, the laser rangefinder 31 will transmit the distance measurement information to the control mechanism in real time, which is used as a basis for controlling the extension and retraction amount of the top rod of the electric telescopic rod 29.

[0027] See also Figure 1 , Figure 2 , Figure 4 and Figure 6 The moving mechanism includes a mounting support plate 33 fixed by bolts at the front and rear positions of the middle side of the support base 1. The bearing grooves provided on the mounting support plate 33 are interference-mounted with bearings, and the front and rear end center positions of the lead screw 34 are integrally provided with a swivel, which is inserted into the inner ring of the bearing through interference, so as to realize the stable rotation of the lead screw 34. The front mounting support plate 33 is bolted to fix the motor 2 37, and the motor 2 37 is a stepping motor. The rotor shaft of the motor 2 37 passes through the mounting support plate 33 and is connected to the front end center position of the lead screw 34 through an interference key. A movable seat 35 is screwed on the lead screw 34, and a sliding rod 36 is welded between the mounting support plates 33 and on the left and right sides of the lead screw 34. The sliding rod 36 slides through the left and right sides of the movable seat 35. The right side of the movable seat 35 is bolted to the connecting support plate 38, and the top of the connecting support plate 38 is bolted to the electric telescopic rod 2 39. The top of the top rod of the electric telescopic rod 2 39 is bolted to the connecting frame 40. The connecting frame 40 is a C-shaped frame structure. The top bolt of the connecting frame 40 fixes the motor 3 41. The motor 3 41 is a stepping motor. The rotor shaft of the motor 3 41 passes through the connecting frame 40 and is bolted to the top connecting plate 42.

[0028] By controlling the extension and retraction of the top rod of the electric telescopic rod 2 39, the lifting and lowering of the moving mechanism is controlled, and by controlling the operation of the motor 3 41, the screw 34 is driven to rotate, thereby driving the suction mechanism to move forward and backward, thereby meeting the requirements of installing test tubes 13 in different areas before and after the dissolution rate detection mechanism.

[0029] See also Figure 1 , Figure 2 , Figure 4 , Figure 6 and Figure 7The suction and injection mechanism includes a spray tube 43 integrally arranged on the left side of the top connecting plate 42. A crimping ring groove is provided on the left side of the bottom of the top connecting plate 42 and located at the outer edge of the lower port of the spray tube 43. A sealing ring 401 is bonded with resin glue in the crimping ring groove. The sealing ring 401 is made of chloroprene rubber. The size of the sealing ring 401 satisfies that: the central circular boss of the sealing ring 401 can be slidably inserted into the upper port of the test tube 13, and its outer edge can be sealed on the outer edge of the upper port of the test tube 13. The upper port flange of the spray tube 43 is connected to the tee 44, the upper port flange of the tee 44 is connected to the pressure control valve 45, and the discharge end flange of the pressure control valve 45 is connected to the exhaust pump 46; When the moving mechanism drives the top connecting plate 42 to move downward, the pressure sealing ring 401 is pressed against the upper port of the test tube 13, and the suction function of the exhaust pump 46 is started, so that the test tube 13 can be sucked, and the pressure control valve 45 is controlled to close, so that when the moving mechanism drives the top connecting plate 42 to move upward, the test tube 13 can be driven to move upward and disengage from the rotary separation mechanism; when the test tube 13 is placed in the dissolution rate detection mechanism after the moving mechanism rotates and lifts, the exhaust function of the exhaust pump 46 is started, the pressure control valve 45 is controlled to open, and the test tube 13 is released, and the moving mechanism stops after rising 2 cm; the pressure control valve 45 is controlled to close, and the flow control valve 48 is controlled to open, and the chemical booster pump 49 is started by pressure sensing, and the dissolved liquid is extracted from the solution tank, and is discharged into the three-way 44 through the boosting of the chemical booster pump 49, and finally discharged into the test tube 13 through the spray pipe 43. When the corresponding volume flow rate is reached, the flow control valve 48 is controlled to close, and the chemical booster pump 49 stops running by pressure sensing.

[0030] The side port flange of the tee 44 is connected to a one-way valve 47, the liquid inlet end flange of the one-way valve 47 is connected to a flow control valve 48, the discharge end flange of the flow control valve 48 is connected to the discharge end of a chemical booster pump 49, and the suction end of the chemical booster pump 49 is connected to a connector 50, which is connected to an external solution tank via an access hose 51.

[0031] Among them, the solution stored in the external solution tank is water with a standard pH value of 6.8. Water can also be configured according to the actual pH value of water in the local agricultural water channel to meet the actual dissolution rate detection needs.

[0032] See also Figure 1 , Figure 2 , Figure 4 and Figure 8 The dissolution rate detection mechanism includes an outer protective frame 53 fixed to the top of the mounting column 52 by bolts. The outer protective frame 53 is a square frame. The outer protective frame 53 is filled with a heat-insulating layer 54. The heat-insulating layer 54 is a fire-proof grade rubber-plastic sponge. The upper part of the outer protective frame 53 is evenly bolted with a heat-conducting bottle 55 at the front and back. The heat-conducting bottle 55 is made of copper and has a size that allows it to be slidably inserted into the test tube 13.

[0033] The lower end of the heat-conducting bottle 55 is screwed to fix the ultrasonic probe 56, the upper part of the heat-conducting bottle 55 is bolted to fix the PTC heating belt 57, the middle part of the right side of the heat-conducting bottle 55 is screwed to the temperature sensor 58, and the pressure-sensitive surface of the temperature sensor 58 contacts the side of the test tube 13. The lower right side of the heat-conducting bottle 55 is fused with a heat-conducting column 59, the material of the heat-conducting column 59 is copper, and the right end of the heat-conducting column 59 is integrally provided with a heat-conducting plate 60, the right side of the heat-conducting plate 60 is screwed to fix the semiconductor cooling sheet 61, the hot end of the semiconductor cooling sheet 61 is screwed to fix the heat-dissipating fin 62, and the right side of the heat-dissipating fin 62 is screwed to fix the heat-dissipating fan 63; When the PTC heating belt 57 is in heating operation, the heat generated by it can be transferred to the test tube 13 through the heat conduction bottle 55; while the semiconductor refrigeration sheet 61 and the heat dissipation fan 63 are in operation, the hot end of the semiconductor refrigeration sheet 61 is effectively dissipated by the wind force of the heat dissipation fan 63, and the cold end of the semiconductor refrigeration sheet 61 is cooled, and the coldness is transferred to the heat conduction bottle 55 through the guidance of the heat conduction column 59 and the heat conduction plate 60, thereby transferring the coldness to the test tube 13 through the heat conduction bottle 55; it is worth noting that heating and cooling do not operate at the same time.

[0034] The temperature sensor 58 detects the surface temperature of the test tube 13 in real time and outputs a temperature signal, which can be used to assist in controlling heating and cooling. The purpose of this setting is: in the cold season and summer, through the adjustment of hot and cold, and the insulation setting, the test tube 13 can be kept within 20°C for normal detection tests.

[0035] The steering gear 64 is fixed by bolts on the left and right sides of the upper part of the outer protective frame 53, and the cantilever bolts of the steering gear 64 are fixed by flip cover 65. The inside of the flip cover 65 is bonded with an insulation board 66 by waterproof resin glue. The material of the insulation board 66 is rubber-plastic sponge. The end side of the insulation board 66 is bonded with a cover plate 67 by waterproof resin glue. The material of the cover plate 67 is PE plastic.

[0036] When the moving mechanism drives the suction mechanism to prepare to add the test tube 13 into the dissolution rate detection mechanism, the servos 64 on both sides are controlled to drive the flip cover 65 to flip outward in the opposite direction until the injection of the dissolved liquid into the test tube 13 is successful, and when the moving mechanism drives the suction mechanism to rise, the servos 64 on both sides are controlled to drive the flip cover 65 to flip toward each other, and the ends of the flip cover 65 on both sides are fitted together, and the cover sheet 67 is fitted to cover the upper end of the test tube 13, and the upper part of the test tube 13 is insulated by the insulation plate 66.

[0037] See also Figure 1 , Figure 2 , Figure 4 and Fig. 9The control mechanism includes a development board 70 fixed by an insulating pad screw on the upper left side of the control box 69, six drivers 71 fixed by screws in the control box 69 and on the right side of the development board 70, the main power access end of each driver 71 is connected to the external power supply through a cable, and the power control output ends of the five drivers 71 are respectively connected to the power controlled ends of the motor 10, the electric telescopic rod 1 29, the electric telescopic rod 2 39, the motor 2 37, the motor 3 41 and the steering gear 64 through cables; a programmable controller 72 is fixed by screws in the control box 69 and on the lower side of the development board 70, and the main power access end of the programmable controller 72 is connected to the external power supply through a cable. Four integrated relays 73 are fixed by screws in the control box 69 and located at the lower side of the programmable controller 72. The main power supply input terminals of the four integrated relays 73 are connected to the external power supply through cables, and the electric control output terminals of the four integrated relays 73 are respectively connected to the power output terminal of the suction pump 24, the potential input terminal of the electric butterfly valve 22, the potential input terminal of the pressure control valve and the potential input terminal of the flow control valve 48 through cables; the thermostat 74 is fixed by screws in the control box 69 and located at the left side of the integrated relay 73, the electric control output input terminal of the programmable controller 72 is connected to the electrical signal input terminals of each control point of the thermostat 74 through cables, the main power supply input terminal of the thermostat 74 is connected to the external power supply, and the power output terminals of the thermostat 74 are respectively connected to the power lines of the PTC heating belt 53, the semiconductor refrigeration plate 61 and the heat dissipation fan 63 through cables.

[0038] See also Fig.10 The development board 70 includes an image signal receiving module, a distance signal receiving module, a flow signal receiving module, a pressure signal receiving module, a temperature signal receiving module and an ultrasonic feed point signal receiving module. The image signal receiving module is used to receive the image information obtained by the CDD camera 6 in real time. The signal receiving pin of the image signal receiving module is connected to the transmission line of the CDD camera. The image signal receiving module performs binary denoising on the image obtained in real time. The distance signal receiving module is used to receive the distance signal input by the laser rangefinder 31 in real time. The flow signal receiving module is used to receive the flow signal input by the flow control valve 48 in real time. The pressure signal receiving module is used to receive the pressure value input by the pressure control valve 45 in real time. The temperature signal receiving module is used to receive the temperature signal input by the temperature sensor 58 in real time. The ultrasonic feed point signal receiving module is used to receive the ultrasonic array signal fed by the ultrasonic probe 56 in real time. The signal access serial pin of the ultrasonic feed point signal receiving module is connected to the signal output line of the ultrasonic probe 56. In addition, the ultrasonic feed point signal receiving module will also arrange the ultrasonic feed points in three dimensions in geometric proportions to form a three-dimensional array image.

[0039] The image signal receiving module and the distance signal receiving module are connected to the analysis and processing control module, which is connected to the batch delay signal processing module. The batch delay signal processing module is used to receive the time signals of each batch of fertilizer particles programmed by the industrial computer 75, and control the grouping. The analysis and processing control module is used to scan the area corresponding to the lower port position of the particle suction tube 32 in the real-time image, and then issue a control instruction according to the control grouping situation; The time period of each batch of slow-release urea fertilizer loaded on the CNC conveyor 2 is set by the industrial computer 75, and the mass V of the slow-release urea fertilizer particles per unit time after being flattened by the scraper 3 of the CNC conveyor is known, and the time S for the slow-release urea fertilizer particles to be transported from the loading area to leaving the CNC conveyor is known. The total amount of fertilizer in this batch T is known, and the delay time R of adjacent batches is considered to be set, wherein R is set to be not less than 5 minutes, and the set time E=T / V+S+R is set. The batch delay signal processing module arranges them in the order of time before and after, and the analysis and processing control module defines the time period, and the middle time period position of each time period is intercepted as the sampling action time period.

[0040] The analysis and processing control module is connected to the coding processing module, the steering conversion numerical control input module 1, the steering conversion numerical control input module 2, the relay control input module 1 and the relay control input module 2. The coding processing module is used to receive the coding signal input by the analysis and processing control module in real time, and input the coding signal into the laser inkjet printer 15 in real time. The signal output pin of the coding processing module is connected to the signal input end of the industrial computer 75 through a signal line, and the control signal output end of the industrial computer 75 is connected to the signal access end of the laser inkjet printer 15. The coding processing module includes a storage unit for storing coding arrangements, which is used to store coding arrangement groups corresponding to each batch of fertilizer production. Each time a code is output to the industrial computer 75, the output code is deleted, and the next code is pushed to the position to be output, and the numbered signal is output in sequence to achieve sequential coding of different test tubes 13; In addition to inputting the numbering signal to the laser inkjet printer 15, the industrial computer 75 also automatically activates and sends a command to the laser inkjet printer 15 to execute inkjet printing. After the inkjet printing operation is completed, the industrial computer 75 automatically activates and sends a command to the laser inkjet printer 15 to stop executing inkjet printing.

[0041] The steering CNC input module 1 is used to receive the control command issued by the analysis and processing control module in real time to control the extension and retraction of the electric telescopic rod 29, and the analysis and processing control module obtains a signal to stop the operation of the electric telescopic rod 29 by comparing the distance signal obtained in real time with the set action distance value; There are two types of action distance values, one is short distance D, and the other is long distance L. The setting of D satisfies that the lower end of the grain suction pipe 32 is 5 cm higher than the highest point of the cdd camera 6; the setting of L satisfies that the lower end of the grain suction pipe 32 is 0.3 mm away from the conveyor belt of the numerical control conveyor 2. When it is actually put into use, an adapted electric telescopic rod 29 can be selected as needed, and the L and D values ​​can be set as needed.

[0042] Among them, when the analysis and processing control module obtains L, the steering CNC input module instantly controls the top rod of the electric telescopic rod 29 to retract until the analysis and processing control module obtains D and stops; when the analysis and processing control module keeps obtaining D, it waits for the next sampling instruction to be issued.

[0043] In this embodiment, the number of test tube slots on the rotary disk 12 is 8, and the number of test tube slots can be set according to the daily production batch quantity. The corresponding setting steering input module 2 controls the motor 10 to run 8 steps, and the motor 10 is controlled to rotate 1 / 8r each time. When the analysis and processing control module outputs the numbering signal, the delay is 3 seconds, and the motor 10 runs 1 / 8r clockwise, and in this way, it stops after running 8 times; The signal output pins of the steering digital control module 1 and the steering digital control module 2 are connected to the signal access terminals of two drivers 71 through signal lines.

[0044] The relay control module 1 is used to receive the relay control instructions issued by the analysis and processing control module in real time, and control the operation and shutdown of the suction pump 24; The signal output pin of the relay control input module 1 is connected to the signal input end of the integrated relay 73 electrically connected to the suction pump 24 through a signal line. Under the control of the analysis and processing control module, it is synchronized with the steering control input module 1 to control the extension instruction of the electric telescopic rod 29, and controls the suction operation of the suction pump 24 until the analysis and processing control module obtains the L value, and the relay control input module 1 controls the suction pump 24 to stop running.

[0045] The suction force of the suction pump 24 satisfies that the grain suction pipe 32 moves down to a region 1 cm above the fertilizer grains, and the fertilizer grains can be sucked into the grain suction pipe 32 and quickly pumped into the discharge bucket 20 .

[0046] The relay control module 2 is used to receive the relay control instructions issued by the analysis and processing control module in real time, and control the opening and closing of the electric butterfly valve 22; The signal output pin of the relay control module 2 is connected to the integrated relay signal input terminal electrically connected to the electric butterfly valve 22 through a signal line. When the number of fertilizer particles sucked into the discharge bucket 20 reaches the set number, the relay control module 2 controls the opening of the electric butterfly valve 22. After a delay of 5 seconds, the relay control module 2 controls the closing of the electric butterfly valve 22.

[0047] In the sampling action time period of each batch, the analysis and processing control module releases a fixed capture frame, the capture frame is located in the area of ​​the image with the same horizontal coordinates as the lower port of the grain suction tube 32. When fertilizer particles appear in the capture frame, since the conveying speed A of the numerical control conveyor 2 is known, and the front-to-back distance J between the capture frame and the grain suction tube 32 is known, the time from the appearance of the particles in the capture frame to the lower port of the vertically corresponding grain suction tube 32 is J / A, and the time when the fertilizer particles reach the lower port of the grain suction tube 32 is immediately timed by the analysis and processing control module, and the time q when the top rod of the electric telescopic rod 29 extends to the grain suction tube 32 1 cm away from the conveyor belt of the numerical control conveyor 2 is known, and the timing signal of the sampling instruction obtained by the analysis and processing control module is: starting from the instant when the fertilizer particles are obtained by the capture frame, the timing is (J / A)-q; After the analysis and processing control module obtains the timing signal, it immediately sends an extension instruction of the top rod of the electric telescopic rod 29 to the steering numerical control input module, and at the same time sends an operation instruction of the suction pump 24 to the relay control input module. When it obtains the L value, it immediately sends a retraction instruction of the top rod of the electric telescopic rod 29 to the steering numerical control input module until it obtains the D value and stops, and at the same time sends a stop instruction of the suction pump 24 to the relay control input module. In this way, the analysis and processing control module counts the number of sampling times until the set number is reached, stops sampling in the sampling action time period of this batch, and waits for the next batch to appear. When the set number is reached, the analysis and processing control module sends an opening command of the electric butterfly valve 22 to the relay control input module 2. After a delay of 5 seconds, the analysis and processing control module sends a closing command of the electric butterfly valve 22 to the relay control input module 2. After execution, the analysis and processing control module inputs the batch number information into the industrial computer 75, and the industrial computer 75 controls the laser inkjet printer 15 to inkjet the label paper on the test tube 13. After the inkjet is completed, the analysis and processing control module sends an instruction to the steering CNC input module 2 for the motor 10 to execute one step. The motor 10 rotates clockwise 1 / 8r and then stops, waiting for the next batch of sampling. Until the eight test tubes 13 are all loaded with fertilizer particles, a transfer instruction will be issued to the pre-processing sub-control module, and the analysis and processing control module will step by step send the motor 10 to the steering CNC input module 2 to reverse 1 / 8r and then stop until all eight test tubes 13 are taken away.

[0048] The flow signal receiving module and the pressure signal receiving module are connected to the pre-processing sub-control module, which is used to perform cumulative calculations based on the real-time flow signals, compare the accumulated flow in real time with the set target flow, and obtain the opening and closing control signal of the flow control valve 48; and obtain the opening and closing control signal of the pressure control valve 45 and the operation and shutdown control signal of the exhaust pump 46 based on the comparison between the real-time pressure signal and the set action pressure value; It is worth noting that the target flow setting satisfies: the dissolved liquid poured into the test tube 13 is 1 cm lower than the upper port of the test tube 13, and the action pressure value setting is divided into suction pressure and release pressure, wherein the suction pressure satisfies: the pressure sealing ring 401 can stably suck the upper port of the test tube 13, and the release pressure satisfies: the pressure sealing ring 401 can effectively detach from the upper port of the test tube 13.

[0049] The analysis and processing control module is connected to the pre-processing sub-control module, which is connected to the steering to numerical control input module three, the steering to numerical control input module four, the steering to numerical control input module five, the relay control input module three and the relay control input module four. The pre-processing sub-control module is used to receive the execution status of the instructions issued by the analysis and processing control module in real time, and issue control instructions to the steering to numerical control input module three, the steering to numerical control input module four, the steering to numerical control input module five, the relay control input module three, the relay control input module four and the relay control input module five according to the execution status of the instructions; Under the processing of the analysis and processing control module, after all batch sampling is completed, the analysis and processing control module will issue a transfer instruction to the pre-processing sub-control module.

[0050] The steering CNC input module three is used to control the operation of the motor two 37, and the signal output pin of the steering CNC input module three is connected to the signal input end of the driver 71 electrically connected to the motor two 37 through a signal line; the steering CNC input module four is used to control the operation of the electric telescopic rod two 39, and the signal output pin of the steering CNC input module four is connected to the signal input end of the driver 71 electrically connected to the electric telescopic rod two 39 through a signal line; the steering CNC input module five is used to control the operation of the motor three 41, and the signal output pin of the steering CNC input module five is connected to the signal input end of the driver 71 electrically connected to the motor three 41 through a signal line. The relay control module 3 is used to control the operation of the flow control valve 48, and the signal output pin of the relay control module 3 is connected to the signal input end of the integrated relay 73 electrically connected to the flow control valve 48 through a signal line; the relay control module 4 is used to control the opening and closing operation of the pressure control valve 45, and the signal output pin of the relay control module 4 is connected to the signal input end of the integrated relay 73 electrically connected to the pressure control valve 45 through a signal line; the relay control module 5 is used to control the operation and shutdown of the exhaust pump 46, and the signal output pin of the relay control module 5 is connected to the signal input end of the integrated relay 73 electrically connected to the exhaust pump 46 through a signal line; Under the coordinated control of the pre-processing sub-control module by the analysis and processing control module, the motor 2 37 is first issued a standby steering speed instruction to the steering rotation numerical control input module 3, so that the lower port of the pressure sealing ring 401 corresponds to the upper port of the rightmost test tube 13 of the rotary mechanism, and then the electric telescopic rod 2 39 push rod retraction instruction is issued to the steering rotation numerical control input module 4. At this time, the pressure sealing ring 401 is pressed tightly against the upper port of the test tube 13, and then the control pressure control valve 45 opening valve instruction is issued to the relay control input module 4, and the exhaust pump 46 exhaust instruction is issued to the relay control input module 5. When the pre-processing sub-control module obtains the suction lift pressure value, the relay control input module 5 is issued. The input module 4 issues a valve closing command to the control pressure control valve 45, and issues a stop operation command to the exhaust pump 46 to the relay control input module 5, and then issues a reset command to the electric telescopic rod 2 39 push rod to extend to the steering CNC input module 4. After completion, the motor 3 41 is issued a clockwise rotation 0.5r command to the steering CNC input module 5. After completion, the motor 2 37 is issued a reverse rotation speed command to the steering CNC input module 3, so that the sucked test tube 13 is aligned with the upper port of the heat conduction bottle 55 at the front of the dissolution speed detection mechanism where the test tube 13 is not loaded, and then the electric telescopic rod 2 39 push rod is issued to the steering CNC input module 4. The rod 2 39 push rod retracts the command, at this time the test tube 13 is effectively inserted into the heat conduction bottle 55, the relay control input module 4 is issued a valve opening command to control the pressure control valve 45, and the relay control input module 5 is issued a venting command to the exhaust pump 46, and when the pre-processing sub-control module obtains the release pressure value, the relay control input module 5 is issued a stop command to control the exhaust pump 46; the steering CNC input module 4 is issued a command to raise the push rod of the electric telescopic rod 2 39 by two centimeters, and then the relay control input module 3 is issued a valve opening command to control the flow control valve 48, until the pre-processing sub-control module obtains the target flow, and the relay control input module 3 is issued A command to control the flow control valve 48 to close the valve is issued, a command to extend the push rod of the electric telescopic rod 2 39 to the reset height is issued to the steering CNC input module 4, and then a command to rotate the motor 3 41 counterclockwise by 0.5r is issued to the steering CNC input module 5. After completion, a command to return the motor 2 37 to wait for the steering speed is issued to the steering CNC input module 3, and the analysis and processing control module issues a command to reverse the motor 10 by 1 / 8r to the steering CNC input module 2. At this time, the pressure sealing ring 401 is aligned with the upper port of the next test tube 13, and this is repeated until all the test tubes 13 are placed in each heat transfer bottle 55 in turn.

[0051] The temperature signal receiving module and the ultrasonic signal receiving module are connected to the timing processing module, and the timing processing module is connected to the pre-processing sub-control module. The timing processing module is used to receive the execution status of the control instructions issued by the pre-processing sub-control module, that is, the timing is started after the injection of the dissolving solution into each test tube 13 is completed, and the ultrasonic array signal is further grouped and timed image processing is performed, and a temperature control signal is issued according to the comparison between the real-time temperature signal and the set standard temperature signal; The timing processing module transmits and connects the temperature control signal output module, the calibration ratio measurement module and the steering digital control input module 6. The temperature control signal output module is used to receive the temperature control signal obtained by the timing processing module in real time, and input it into the temperature controller 74 after adaptation and conversion. The signal output pin of the temperature control signal output module is connected to the signal input end of the programmable controller 72 through a signal line, wherein the standard temperature signal is set in the programmable controller 72, and is set as follows: the standard temperature signal is set to 20°C. When the temperature signal obtained by the timing processing module is higher than 20°C, the programmable controller 72 issues an operation instruction to control the heat dissipation fan 63 and the semiconductor refrigerator 61 to the temperature controller 74. When the temperature signal obtained by the timing processing module is lower than 20°C, the programmable controller 72 issues an operation instruction to control the PTC heating belt 57 to the temperature controller 74. When the temperature signal obtained by the timing processing module is 20°C, the heat dissipation fan 63, the semiconductor refrigerator 61 and the PTC heating belt 57 are kept in a stopped state. The calibration comparison module is used to compare the processed image with the calibration image in the image library in real time, and feed back the group that meets the calibration image standard to the timing processing module, and the timing processing module stops the timing and calculates the dissolution rate; When comparing the calibration images, the calibration comparison module will release the capture factor on the processed image, and capture the particle points of the image through the capture factor, and obtain the particle size value through particle size scanning. Since there are insoluble substances after the slow-release urea fertilizer particles are dissolved, and the insoluble substances are mostly soft in texture, the signal intensity of the ultrasonic reflection feed point is not high, so that the color of the insoluble points in the processed image is lighter. The calibration images in the image library are the residual insoluble states when the same number of particles are completely dissolved under the standard feedback of the ultrasonic probe 56 in different batches. When comparing, the particle points obtained by the capture factor in the processed image are compared with the image. The color and size of the particle points in all the calibration images in the library are compared, and the conditions for judging whether the dissolution is complete must be met: the color depth and size of the particle points are at least not higher than the color depth and size of all the particle points in the three calibration images, and the timing processing module accumulates time until the condition for dissolution is instantaneous stop, and the timing processing module is pre-programmed through the industrial computer 75 into the running motor 10 to run the reverse 1 / 8r instruction process of each test tube 13 batch number arrangement, and the batch numbers are arranged according to the front and back position arrangement order of the test tubes 13, and the dissolution time of the fertilizer particles in the test tubes 13 corresponding to each batch number is attached, and a batch dissolution time arrangement table is made.

[0052] The steering CNC input module 6 is used to control the servos 64 on both sides to flip the cover 65 in the opposite direction when the test tubes 13 are loaded into the heat-conducting bottle 55 in sequence under the control of the analysis and processing control module and the control pre-processing sub-control module. After loading is completed, the servos 64 on both sides are controlled to flip the cover 65 towards each other.

[0053] Under the control of the analysis and processing control module, after the control of multiple batches of sampling is completed, the timing processing module first issues an instruction to the steering CNC input module 6 to control the servos 64 on both sides to flip the cover 65 in the opposite direction. After the pre-processing sub-control module obtains the test tube 13 for adding each batch of fertilizer samples to the dissolution speed detection mechanism, the pre-processing sub-control module controls the steering CNC input module 3 to issue a reset instruction to the motor 2 37, and the moving mechanism is reset to the initial position state with a delay of 2 seconds. The timing processing module issues an instruction to the steering CNC input module 6 to control the servos 64 on both sides to flip the cover 65 in the opposite direction, that is, it completely enters the storage state. When the fertilizer particles in all the test tubes meet the conditions for judging that the dissolution is complete, the timing processing module issues an instruction to the steering CNC input module 6 to control the servos 64 on both sides to flip the cover 65 in the opposite direction.

[0054] The analysis and processing control module, the pre-processing sub-control module and the timing processing module are connected to a mapping processing module for real-time mapping of the information and control signal control status of the analysis and processing control module, the pre-processing sub-control module and the timing processing module to the industrial computer 75. The number of sampled particles, the action distance value, the action pressure value, the target flow rate and the standard temperature signal can also be set through the industrial computer 75, and the calibration image replacement operation can also be performed.

[0055] The timing processing module will input the batch dissolution time arrangement table generated by it into the industrial computer 75 after being processed by the mapping processing module for the sampling inspection personnel to view.

[0056] In addition, the analysis and processing control module, the pre-processing sub-control module and the timing processing module can be controlled to start and stop temporarily through the industrial computer 75. When the industrial computer 75 has not set or changed the parameters and images, the analysis and processing control module, the pre-processing sub-control module and the timing processing module will continue to execute the remaining unexecuted control instructions when they are switched from a temporary stop to an open state. When the industrial computer 75 sets the parameters and images, the analysis and processing control module, the pre-processing sub-control module and the timing processing module will not only continue to execute the remaining unexecuted control instructions when they are switched from a temporary stop to an open state, but will also execute them according to the parameters and images after the set change operation.

[0057] The working principle of this embodiment is as follows: under the control of the control mechanism, the sampling time and loading detection time of the fertilizer particles are planned according to the distribution time of different batches, and the fertilizer particle positioning mechanism spreads the fertilizer particles on the conveyor belt of the numerical control conveyor 2 and captures the image. Under the intervention of the control mechanism, the fertilizer particles corresponding to the left and right horizontal coordinates on the conveyor belt of the numerical control conveyor 2 and the lower end of the particle suction tube 4 are detected in real time, and the vortex separation mechanism and the particle injection mechanism are controlled to sample equal amounts of fertilizer particles of each batch within the planned sampling time period. After the sampling of all batches of fertilizer particles is completed, the moving mechanism and the suction and injection mechanism are controlled to load each test tube 13 on the vortex separation mechanism into the dissolution rate detection mechanism in turn, and equal amounts of dissolving liquid are added one by one.

[0058] Each test tube 13 is kept warm at a suitable temperature by a dissolution rate detection mechanism, and the time from injection of the dissolving solution to completion of dissolution of the fertilizer particles in each test tube 13 is measured.

[0059] Therefore, during the whole process, there is no need to manually sample the fertilizer particles on the conveyor belt of the CNC conveyor 2, nor is there any need to manually record the dissolution changes of the fertilizer particles collected in each batch. This method is suitable for the situation where a large number of batches of slow-release urea fertilizers are produced every day. It is easy to use, and the sampling personnel only need to check the test results through the industrial computer 75.

[0060] 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 sampling and testing device for fertilizer processing, comprising a support base (1) and a numerically controlled conveyor (2) arranged on the side of the support base (1), characterized in that: The numerically controlled conveyor (2) is provided with a fertilizer particle positioning mechanism, which is used to spread the fertilizer particles on the conveyor belt of the numerically controlled conveyor (2), detect the distribution of the fertilizer particles on the conveyor belt of the numerically controlled conveyor (2) in real time, and determine the fertilizer particle path points in combination with the conveying speed information of the numerically controlled conveyor (2); A connecting frame (8) is installed on the top of the support pedestal (1), a rotary separation mechanism is provided on one side of the connecting frame (8), and test tubes (13) are evenly inserted in a circumferential direction on the rotary separation mechanism; a reinforcing plate (9) is provided on one side of the support pedestal (1), and a particle injection mechanism is installed on the reinforcing plate (9) and on the top of one side of the support pedestal (1), the particle injection mechanism is used to suck fertilizer particles from the conveyor belt of the numerical control conveyor (2), and quantitatively inject fertilizer particles into the test tubes (13) inserted on the rotary separation mechanism; and the rotary separation mechanism is used to drive the test tubes (13) to perform rotational position adjustment, thereby changing the test tubes (13) into which the fertilizer particles are injected by the particle injection mechanism; a mounting vertical plate (14) is provided on the connecting frame (8) and at the side of the rotary separation mechanism, and a laser inkjet printer (15) is installed on the mounting vertical plate (14), and the laser inkjet printer (15) is used to perform laser inkjet coding and numbering on the test tubes (13); The support base (1) is provided with a moving mechanism, and a suction mechanism is installed on the top of the moving mechanism, and the suction mechanism is used to cooperate with the lifting operation of the moving mechanism to realize the injection of dissolved liquid into the test tube (13) and the suction and lifting of the test tube (13); A mounting column (52) is connected to the support base (1) and is close to the moving mechanism. A dissolution rate detection mechanism is installed on the top of the mounting column (52). The dissolution rate detection mechanism is used to cooperate with the test tube (13) release action of the suction and injection mechanism and the forward and backward displacement operation of the moving mechanism to store the test tube (13) in a warm state and to check the dissolution of the fertilizer particles in the test tube (13); A connecting support column (68) is arranged on the other side of the support base (1), a control box (69) is arranged on the top of the connecting support column (68), an industrial computer (75) is installed on the box cover of the control box (69), and a control mechanism is arranged in the control box (69), the control mechanism is used to analyze and control the injection mechanism to suck a set amount of fertilizer particles from the conveyor belt of the numerical control conveyor (2) according to the time when different batches of fertilizer particles are placed on the numerical control conveyor (2) and the fertilizer particle positioning information fed back by the fertilizer particle positioning mechanism, and to rotate the injection mechanism to suck a set amount of fertilizer particles from the conveyor belt of the numerical control conveyor (2) and to rotate the injection mechanism to control the fertilizer particles to be sucked in. Injecting different batches of fertilizer granules into each test tube (13) on the separation mechanism; controlling the cyclone separation mechanism to exchange the positions of the test tube (13) to be injected with fertilizer granules and the test tube (13) to be injected with fertilizer granules according to the completion of the granulation by the granulation mechanism; inputting the batch number into the laser coder (15), and controlling the laser coder (15) to perform laser code numbering on the test tube (13); controlling the movement mechanism and the suction and injection mechanism to operate according to the operation of the granulation mechanism and the cyclone separation mechanism, and coordinating the operation of the movement mechanism and the suction and injection mechanism with the dissolution speed detection mechanism for heat preservation and storage; The dissolution rate detection mechanism is connected in real time to detect the dissolution of the fertilizer particles in each test tube (13), and a calibration analysis is performed.

2. A sampling and detection device for fertilizer processing according to claim 1, characterized in that: The fertilizer particle positioning mechanism comprises side plates (4) arranged on both sides of the top of the numerical control conveyor (2); a scraper (3) is installed between the side plates (4); the scraper (3) is used to flatten the fertilizer particles on the conveyor belt of the numerical control conveyor (2); a lighting frame (5) is arranged in front of the scraper (3); a CDD camera (6) is installed on the middle side of the top of the lighting frame (5); and fill lights (7) are also arranged on both sides of the top of the lighting frame (5).

3. A sampling and detection device for fertilizer processing according to claim 2, characterized in that: The rotary separation mechanism comprises a motor 1 (10) arranged on one side of the bottom of the connecting frame (8), the rotor shaft of the motor 1 (10) passes through the connecting frame (8) and is connected to a rotary center plate (11), a rotary disk (12) is arranged on the outer side of the rotary center plate (11), and test tube grooves for inserting test tubes (13) are evenly arranged on the rotary disk (12) in an annular direction; an annular label paper is pasted on the outer upper side of each test tube (13), and the annular label paper is used to receive laser coding from a laser coding device (15); a mounting column (16) is connected to the bottom of the connecting frame (8) and located at the side of the motor 1 (10), and the bottom of the mounting column (16) is connected to the support base (1).

4. A sampling and detection device for fertilizer processing according to claim 3, characterized in that: The pelletizing mechanism comprises a reinforcing plate (9) and a top connecting plate (17) installed on the top of a supporting pedestal (1); a supporting frame (18) is installed on one side of the top connecting plate (17); a reinforcing plate (19) is connected to one side of the supporting frame (18); a discharge bucket (20) is arranged at one end of the reinforcing plate (19); a lower discharge pipe (21) is arranged at the bottom of the discharge bucket (20); an electric butterfly valve (22) is connected to the lower end of the lower discharge pipe (21); a discharge end of the electric butterfly valve (22) is connected to a pellet discharge pipe (23); and one side of the top connecting plate (17) is connected to the pellet discharge pipe (23); A connecting pipe is provided at one side of the discharge bucket (20), a filter plate (201) is provided at the port of the connecting pipe, and one end of the connecting pipe is connected to a suction pump (24); a sealing top cover (25) is installed at the top of the discharge bucket (20), an upper connecting pipe (26) is provided in the middle of the sealing top cover (25), a flexible connecting pipe (27) is connected to the upper connecting pipe (26), and one end of the flexible connecting pipe (27) is connected to a particle suction pipe (32); An electric telescopic rod (29) is installed at the lower end of the top of the support frame (18), the top rod of the electric telescopic rod (29) is connected to a support plate (28), and the support plate (28) is fixed to the particle suction pipe (32); A reflective plate (30) is installed on one side of the support flat plate (28), and a laser rangefinder (31) is installed on one side of the top of the support frame (18) at a position corresponding to the reflective plate (30).

5. A sampling and detection device for fertilizer processing according to claim 4, characterized in that: The moving mechanism comprises a mounting support plate (33) mounted on one side of the support pedestal (1), a lead screw (34) being rotatably arranged between the mounting support plates (33), a second motor (37) being arranged on one of the mounting support plates (33), a rotor shaft of the second motor (37) passing through the mounting support plate (33) and being connected to a central position of one end of the lead screw (34); A movable seat (35) is screwed onto the lead screw (34), and sliding rods (36) are connected between the mounting support plates (33) and at positions on both sides of the lead screw (34), and the sliding rods (36) slide through the movable seat (35), and a connecting support plate (38) is connected to one side of the movable seat (35), and an electric telescopic rod 2 (39) is installed on the top of the connecting support plate (38), and a connecting frame (40) is connected to the top of the top rod of the electric telescopic rod 2 (39), and a motor 3 (41) is installed on the top of the connecting frame (40), and a rotor shaft of the motor 3 (41) penetrates the connecting frame (40) and is connected to a top connecting plate (42).

6. A sampling and detection device for fertilizer processing according to claim 5, characterized in that: The suction and injection mechanism comprises a spray pipe (43) arranged on one side of the top connecting plate (42); a pressure sealing ring (401) is arranged on one side of the bottom of the top connecting plate (42) and located at the outer edge of the lower port of the spray pipe (43); one end of the spray pipe (43) is connected to a tee (44); the upper end of the tee (44) is connected to a pressure control valve (45); and the discharge end of the pressure control valve (45) is connected to an exhaust pump (46); The side port of the three-way valve (44) is connected to a one-way valve (47), the liquid inlet end of the one-way valve (47) is connected to a flow control valve (48), the discharge end of the flow control valve (48) is connected to a chemical booster pump (49), the suction end of the chemical booster pump (49) is connected to a joint (50), and the joint (50) is connected to an external solution tank via an access hose (51).

7. A sampling and detection device for fertilizer processing according to claim 6, characterized in that: The dissolution rate detection mechanism comprises an outer protective frame (53) mounted on the top of the mounting column (52), a heat-insulating layer (54) being arranged inside the outer protective frame (53), and heat-conducting bottles (55) being evenly mounted on the front and rear of the upper part of the outer protective frame (53), the heat-conducting bottles (55) being used to insert the test tube (13); An ultrasonic probe (56) is provided at the lower end of the heat-conducting bottle (55), a PTC heating belt (57) is installed at the upper part of the heat-conducting bottle (55), a temperature sensor (58) is installed at the middle part of one side of the heat-conducting bottle (55), a heat-conducting column (59) is connected to one side of the lower part of the heat-conducting bottle (55), a heat-conducting plate (60) is provided at one end of the heat-conducting column (59), a semiconductor cooling sheet (61) is installed at one side of the heat-conducting plate (60), a heat-dissipating fin (62) is installed at the hot end of the semiconductor cooling sheet (61), and a heat-dissipating fan (63) is installed at one side of the heat-dissipating fin (62); A steering gear (64) is installed on both sides of the upper part of the outer protective frame (53), a flap cover (65) is installed on the cantilever of the steering gear (64), a heat preservation plate (66) is installed in the flap cover (65), and a cover plate (67) is installed on the end side of the heat preservation plate (66).

8. The sampling and detection device for fertilizer processing according to claim 7 is characterized in that: The control mechanism comprises a development board (70) arranged in a control box (69), at least three drivers (71) being arranged in the control box (69) and located on one side of the development board (70), a programmable controller (72) being installed in the control box (69) and located below the development board (70), an integrated relay (73) being arranged in the control box (69) and located below the programmable controller (72), and a temperature controller (74) being installed in the control box (69) and located on the side of the integrated relay (73).

9. A sampling and detection device for fertilizer processing according to claim 8, characterized in that: The development board (70) comprises an image signal receiving module, a distance signal receiving module, a flow signal receiving module, a pressure signal receiving module, a temperature signal receiving module and an ultrasonic feed point signal receiving module; The image signal receiving module and the distance signal receiving module are connected to an analysis and processing control module, the analysis and processing control module is connected to a batch delay signal processing module, the batch delay signal processing module is used to receive the time signal of each batch of fertilizer particles being placed programmed by the industrial control computer (75), and to control the grouping, the analysis and processing control module is used to scan the area corresponding to the position of the lower port of the particle suction tube (32) in the real-time image, and then issue a control instruction according to the control grouping situation; The analysis and processing control module is connected to the coding processing module, the steering numerical control input module 1, the steering numerical control input module 2, the relay control input module 1 and the relay control input module 2. The coding processing module is used to receive the coding signal input by the analysis and processing control module in real time, and input the coding signal into the laser inkjet printer (15) in real time; the steering numerical control input module 1 is used to receive the control instruction issued by the analysis and processing control module in real time to control the extension and retraction of the electric telescopic rod 1 (29), and the analysis and processing control module obtains a signal to stop the operation of the electric telescopic rod 1 (29) by comparing the distance signal obtained in real time with the set action distance value; the steering numerical control input module 2 is used to control the operation of the motor 1 (10), and the relay control input module 1 is used to receive the relay control instruction issued by the analysis and processing control module in real time, and control the operation and shutdown of the suction pump (24); the relay control input module 2 is used to receive the relay control instruction issued by the analysis and processing control module in real time, and control the opening and closing of the electric butterfly valve (22); The flow signal receiving module and the pressure signal receiving module are connected to a pre-processing sub-control module, the pre-processing sub-control module is used to perform cumulative calculations based on the real-time obtained flow signals, compare the accumulated flow in real time with the set target flow, and obtain an on / off control signal for the flow control valve (48); and obtain an on / off control signal for the pressure control valve (45) and an operation and shutdown control signal for the exhaust pump (46) based on a comparison between the real-time obtained pressure signal and the set action pressure value; The analysis and processing control module is connected to the pre-processing sub-control module, and the pre-processing sub-control module is connected to the steering to numerical control input module three, the steering to numerical control input module four, the steering to numerical control input module five, the relay control input module three and the relay control input module four. The pre-processing sub-control module is used to receive the execution status of the instructions issued by the analysis and processing control module in real time, and issue control instructions to the steering to numerical control input module three, the steering to numerical control input module four, the steering to numerical control input module five, the relay control input module three, the relay control input module four and the relay control input module five according to the execution status of the instructions; The steering digital control module 3 is used to control the operation of the motor 2 (37), the steering digital control module 4 is used to control the operation of the electric telescopic rod 2 (39), the steering digital control module 5 is used to control the operation of the motor 3 (41), the relay control module 3 is used to control the operation of the flow control valve (48), the relay control module 4 is used to control the opening and closing operation of the pressure control valve (45), and the relay control module 5 is used to control the operation and shutdown of the exhaust pump (46); The temperature signal receiving module and the ultrasonic signal receiving module are connected to a timing processing module, and the timing processing module is connected to the pre-processing sub-control module. The timing processing module is used to receive the execution status of the control instructions issued by the pre-processing sub-control module, and perform group timing image processing on the ultrasonic array signal, and send out a temperature control signal according to the comparison between the real-time temperature signal and the set standard temperature signal; The timing processing module is connected to the temperature control signal output module, the calibration comparison measurement module and the steering digital control input module 6. The temperature control signal output module is used to receive the temperature control signal obtained by the timing processing module in real time, and input it into the temperature controller (74) after adaptation and conversion; the calibration comparison measurement module is used to compare the processed image with the calibration image in the image library in real time, and feed back the group that meets the calibration image standard to the timing processing module, and the timing processing module stops timing and calculates the dissolution rate; the steering digital control input module 6 is used to control the steering gears (64) on both sides to reversely flip the cover (65) when the test tubes (13) are sequentially loaded into the heat transfer bottle (55) under the control of the analysis and processing control module and the control pre-processing sub-control module; The analysis and processing control module, the pre-processing sub-control module and the timing processing module are connected to a mapping processing module, the mapping processing module being used to map the real-time processing information and control signal control conditions of the analysis and processing control module, the pre-processing sub-control module and the timing processing module to the industrial control computer (75) in real time, and also to set the number of sampled particles, the action distance value, the action pressure value, the target flow rate and the standard temperature signal through the industrial control computer (75).

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