Improved seed coating machine

Abstract

The utility model discloses an improved seed coating machine, which relates to the technical field of seed coating machines, and comprises a mixing barrel, the center of the bottom of the mixing barrel is fixedly connected with a lower supporting seat, the center of the lower supporting seat is rotatably provided with a driving main shaft through a sealing bearing, and the upper end of the outer wall of the driving main shaft is fixedly connected with a mixing main disc. A liquid medicine atomizing disc is fixedly connected to the top of the driving main shaft, an emptying door is arranged on the side wall, corresponding to the upper edge of the mixing main disc, of the mixing barrel, a discharging cover is fixedly connected to the outer wall, corresponding to the emptying door, of the mixing barrel, and a flow guide plate is arranged, so that the stirring efficiency of seeds in the mixing barrel can be improved, and the stirring time is shortened; and by arranging the speed increasing strips, the kinetic energy transmitted to the seeds can be increased while the mixing main disc keeps the same rotating speed, the stirring effect is enhanced, the requirement for the discharging speed is reduced, and the discharging effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of seed coating machines, in particular to an improved seed coating machine. Background Art

[0002] Seed coating machine is a machine that coats the surface of selected seeds with coating agent to make them into pellets. There are rotary drum type, floating type and integrated type. It is composed of coating tank, batching, metering, spraying, air supply, power and transmission devices. The seeds and coating agent are repeatedly rubbed and squeezed against each other in the coating tank, so that a coating layer with a certain strength is formed on the surface of the seeds. The size and shape of the seeds after coating are consistent, which is conducive to mechanical sowing, improves sowing accuracy, and reduces the amount of seeds and the workload of thinning.

[0003] The core of similar products in this industry is the mixing chamber. The mixing chamber is where the seeds and medicines are mixed. The first generation does not have a mixing chamber configuration, only a auger. The second and third generations have roughly the same mechanical structure, but the only difference is the method of measuring seeds and medicines. The second generation uses the volumetric measurement method, and the third generation uses the weighing measurement method.

[0004] The mixing chamber is equipped with a mixing chamber main plate (similar to the impeller chassis of a household washing machine), a mixing chamber barrel wall, and a mixing chamber emptying door. The measured seeds and drugs are put into the mixing chamber for mixing. After a certain set time, the barrel wall drives the cylinder to open the door to achieve the purpose of discharging.

[0005] The mixing chamber main disc and the mixing chamber barrel wall need to rotate, so there must be a certain clearance. This clearance cannot be avoided, but it has a great negative impact on the production process. Seed debris and drugs will flow through this gap to the bottom of the mixing chamber main disc and settle. Although this process does not seem to be a big deal, over time, the bottom of the mixing chamber main disc will often be blocked by dust and drug stains, making the main disc unable to rotate, and the equipment must be dismantled and cleaned to solve the problem.

[0006] Some manufacturers add positive pressure fans under the main plate of the mixing chamber. The fans blow air to generate greater wind pressure and air volume under the main plate, which has a lifting effect on the dust. Since the gaps in the main plates of various manufacturers are large, fans with high air volume and low air pressure are generally used. (High air pressure and low air volume have a larger air leakage area and cannot produce the required lifting effect) Higher air volume will cause three major problems.

[0007] 1: Large ventilation volume will bring the liquid medicine in the mixing chamber out of the mixing chamber and enter the dust collector through the dust removal pipe. This not only wastes the liquid medicine, which does not act on the seeds, but also increases the maintenance frequency of the dust collector and increases the personal injury of the operator who is exposed to the medicine.

[0008] 2: After the coated seeds of this batch are emptied, the batch coating machine will have a preparation time of about 8 seconds. This time is to check whether the seeds of the previous batch are emptied, check the weight of the seeds and liquid medicine of the next batch, and replenish the medicine. During this preparation period, a certain amount of residue will always remain on the wall of the mixing chamber barrel from the previous batch of medicine. The excessive air volume of the positive pressure support seam will accelerate the hardening of the medicine on the wall of the mixing chamber barrel. This not only wastes the medicine, but also increases the work of production personnel to remove the medicine scale on the wall of the mixing chamber barrel.

[0009] 3: Due to the high air volume, the liquid atomization effect cannot reach the best. The liquid medicine enters the mixing chamber and passes through the atomizing disk, which changes the liquid medicine from a liquid flow to a granular state. By changing the speed of the atomizing disk, the size of the atomized droplets can be adjusted. The smaller the atomized droplets, the better the encapsulation of the final product. However, atomized droplets that are too small are easily carried out of the mixing chamber by a large air volume. At present, the products on the market will adjust the mixing chamber atomizing disk to a slower speed during the debugging stage, so that the atomized droplets are very large, or even a linear flow of liquid medicine. The main consideration is the loss of liquid medicine after atomization. Utility Model Content

[0010] The purpose of the utility model is to solve the problem that due to the large gap between the main disks of various manufacturers, fans with high air volume and low air pressure are generally used, the higher air volume causes the medicine liquid to be carried out of the mixing chamber, the medicine caking on the barrel wall of the mixing chamber is accelerated, and the large atomized droplets affect the poor seed coating. The utility model provides an improved seed coating machine.

[0011] In order to achieve the above-mentioned purpose, the utility model specifically adopts the following technical solutions:

[0012] The cam is provided with a plurality of guide rails, each of which is provided with a plurality of guide rails, each of which is provided with a plurality of guide rails, each of which is provided with a plurality of guide rails, each of which is provided with a plurality of guide rails.

[0013] Furthermore, the main mixing disc is formed by high-precision spinning, and the average gap between the main mixing disc and the inner wall of the mixing barrel is 0.5 mm.

[0014] Furthermore, a bottom support plate is fixedly connected to the bottom of the hybrid main disk, and a limiting convex ring is fixedly connected to the outer wall of the hybrid main disk corresponding to the lower edge of the bottom support plate, and a rubber sealing gasket is arranged between the upper end of the bottom support plate and the bottom of the hybrid main disk.

[0015] Furthermore, the air inlet is connected to a fan through a pipeline, and the output air pressure of the fan is 14kpa.

[0016] Furthermore, the guide plate is an arc-shaped plate designed with an Archimedean spiral, and the lower edge of the guide plate is provided with an inclined edge that tilts inwards and upwards.

[0017] Furthermore, the speed-increasing strip is arranged at an inclination of 30 degrees with respect to the rotation direction of the hybrid main disk, and the side surface of the speed-increasing strip is provided with a chamfer with an inclination of 75 degrees.

[0018] Furthermore, the upper edge of the emptying door is hingedly fixed to the outer wall of the mixing barrel by a hinge, and a pneumatic telescopic rod is arranged between the center of the outer wall of the emptying door and the inner top wall of the discharge cover, and the center of the outer wall of the emptying door and the inner top wall of the discharge cover are hingedly connected to both ends of the pneumatic telescopic rod.

[0019] The beneficial effects of the utility model are as follows:

[0020] 1. The utility model provides a guide plate, which can improve the mixing efficiency of the seeds in the mixing barrel, reduce the mixing time, and thus reduce the amount of medicine that drifts into the air flow through the air inlet. The speed-increasing bar is provided, which can increase the kinetic energy transferred to the seeds while maintaining the same rotation speed of the mixing main disk, thereby enhancing the mixing effect, reducing the requirement for the discharge speed, and improving the discharge effect.

[0021] 2. The high-precision matching dimensions of the utility model ensure that the positive pressure fan seam support effect reaches the expected effect, and ensures that the wind cavity under the mixing barrel is free of impurities for a long time. On this basis, the air volume in the mixing barrel can be reduced as much as possible. The air volume is reduced to meet the wind speed of the dust removal port below 5m / s. In this way, the dust removal port can carry less atomized granular medicine and reduce losses. At the same time, the drying speed of the medicine on the inner wall of the mixing barrel slows down. After the next batch of seeds falls, they are washed and absorbed to the surface of the seeds, which not only reduces the cleaning work after the medicine is hardened, but also maximizes the use of medicine to ensure that the ratio of medicine to seed meets the set requirements. Finally, the lower air volume and wind speed leave room for increasing the rotation speed of the liquid medicine atomization disk, so that the atomized droplets can be more delicate and the coating of the seeds is better.

[0022] 3. The utility model is provided with a bottom support plate, which can provide stable support for the bottom of the mixing main disk, reduce the end face jump of the mixing main disk when it rotates, ensure the stability of the gap between the mixing main disk and the mixing barrel, thereby ensuring the effect of the positive pressure fan supporting the seam. At the same time, the support of the mixing main disk can reduce the deformation of the mixing main disk caused by the direct impact of seeds on the bottom surface of the mixing main disk when feeding at the seed inlet, reduce the weight of the mixing main disk while ensuring the impact resistance of the mixing main disk, and reduce the load on the driving spindle to rotate. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a three-dimensional diagram of the utility model;

[0024] Figure 2 It is a front cross-sectional view of the utility model;

[0025] Figure 3 It is a top sectional view of the utility model;

[0026] Figure 4 It is a cross-sectional structural diagram of the speed increasing strip in the utility model.

[0027] Figure numerals: 1. mixing barrel; 2. emptying door; 3. lower support seat; 4. driving main shaft; 5. mixing main disk; 6. liquid medicine atomization disk; 7. seed inlet; 8. dust removal port; 9. medicine inlet pipe; 10. air inlet; 11. bottom support plate; 12. guide plate; 13. speed increasing bar; 14. discharge cover; 15. driving pulley. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solution and advantages of the embodiments of the present utility model clearer, the technical solution in the embodiments of the present utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the present utility model.

[0029] See also Figure 1-Figure 4The utility model provides an improved seed coating machine, including a mixing barrel 1, a lower support seat 3 is fixedly connected to the bottom center of the mixing barrel 1, a driving main shaft 4 is rotatably installed at the center of the lower support seat 3 through a sealed bearing, a mixing main disk 5 is fixedly connected to the upper end of the outer wall of the driving main shaft 4, and a liquid atomizing disk 6 is fixedly connected to the top of the driving main shaft 4, an emptying door 2 is arranged on the side wall of the mixing barrel 1 corresponding to the upper edge of the mixing main disk 5, and a discharge cover 14 is fixedly connected to the outer wall of the mixing barrel 1 corresponding to the emptying door 2, and a side of the upper end of the mixing barrel 1 A seed inlet 7 is provided, and a medicine inlet pipe 9 is fixedly connected to the other side of the upper end of the mixing barrel 1, the bottom end of the medicine inlet pipe 9 is inclined toward the center above the upper medicine liquid atomization disk 6, and a dust removal port 8 is provided at the center of the upper end of the mixing barrel 1. The bottom of the driving main shaft 4 passes through the mixing barrel 1 and is fixedly connected to a driving pulley 15, and an air inlet 10 is provided on one side of the bottom of the mixing barrel 1. Two guide plates 12 are fixedly connected to the inner wall of the mixing barrel 1 corresponding to the upper end of the mixing main disk 5, and a plurality of speed increasing strips 13 are fixedly connected to the inner wall of the mixing main disk 5 in a ring array.

[0030] In this embodiment, preferably, the mixing main disk 5 is formed by high-precision spinning, and the average gap between the mixing main disk 5 and the inner wall of the mixing barrel 1 is 0.5 mm; the high-precision matching size ensures that the positive pressure fan support seam effect reaches the expected effect, and ensures that the lower air chamber of the mixing barrel 1 is free of impurities for a long time. On this basis, the air volume in the mixing barrel 1 is reduced as much as possible. The air volume is reduced to meet the wind speed of the dust removal port 8 below 5m / s. In this way, the dust removal port 8 can carry less atomized granular medicine and reduce losses. At the same time, the drying speed of the medicine on the inner wall of the mixing barrel 1 slows down. After the next batch of seeds falls, they are washed and absorbed to the surface of the seeds, which not only reduces the cleaning work after the drug is hardened, but also maximizes the use of drugs to ensure that the ratio of drug species meets the setting requirements. Finally, the lower air volume and wind speed leave room for increasing the rotation speed of the liquid atomization disk 6, so that the atomized droplets can be more delicate and the coating seeds are better wrapped.

[0031] In the present embodiment, preferably, a bottom supporting plate 11 is fixedly connected to the bottom of the mixing main plate 5, and a limiting convex ring is fixedly connected to the outer wall of the mixing main plate 5 corresponding to the lower edge of the bottom supporting plate 11, and a rubber sealing pad is arranged between the upper end of the bottom supporting plate 11 and the bottom of the mixing main plate 5; through the arranged bottom supporting plate 11, the bottom supporting plate 11 can provide a stable support for the bottom of the mixing main plate 5, can reduce the end face jump of the mixing main plate 5 when the mixing main plate 5 rotates, and ensure the stability of the gap between the mixing main plate 5 and the mixing barrel 1, thereby ensuring the effect of the positive pressure fan supporting seam, and at the same time, the support of the mixing main plate 5 can reduce the deformation of the mixing main plate 5 caused by the direct impact of seeds on the bottom surface of the mixing main plate 5 when feeding at the seed inlet 7, reduce the weight of the mixing main plate 5 while ensuring the impact resistance of the mixing main plate 5, and reduce the load on the driving spindle 4 to rotate.

[0032] In this embodiment, preferably, the air inlet 10 is connected to a fan through a pipeline, and the output air pressure of the fan is 14kpa; by setting a small air volume and reaching an air pressure of 14kpa, the energy of the fan is just slightly higher than the diffusion speed of the gap of the mixing main disk 5. After the air pressure through the gap is merged into the mixing barrel 1, the air pressure is diffused, and the air volume is extremely small, which does not affect the drying speed in the mixing chamber and does not affect dust removal and other issues.

[0033] In this embodiment, preferably, the guide plate 12 is an arc-shaped plate designed with an Archimedean spiral, and the lower edge of the guide plate 12 is provided with an inclined edge slanting inwards and upwards; through the design of the Archimedean spiral, the guide plate 12 is more in line with the actual motion curve of seed stirring, and the guide plate 12 has a slope at the bottom, which conforms to the motion trajectory of the seeds being thrown by the mixing main plate 5.

[0034] In this embodiment, preferably, the speed-increasing strip 13 is inclined at 30 degrees to the rotation direction of the mixing main disk 5, and the side of the speed-increasing strip 13 is provided with a 75-degree inclined chamfer; the speed-increasing strip 13 is made of a wear-resistant polymer polyethylene material, and the setting angle and chamfer of the speed-increasing strip 13 ensure the diversion effect while reducing the impact on the emptying time.

[0035] In this embodiment, preferably, the upper edge of the emptying door 2 is hingedly fixed to the outer wall of the mixing barrel 1 by a hinge, and a pneumatic telescopic rod is arranged between the center of the outer wall of the emptying door 2 and the inner top wall of the discharge cover 14, and the center of the outer wall of the emptying door 2 and the inner top wall of the discharge cover 14 are hingedly connected to both ends of the pneumatic telescopic rod; the pneumatic telescopic rod can drive the emptying door 2 to flip and open and close, and the operation is simple and easy to use.

[0036] The working principle and use process of the utility model are as follows: when the device is used, the driving spindle 4 is rotatably installed at the bottom center of the mixing barrel 1 through the lower supporting seat 3 and the driving spindle 4 is arranged, and is connected to the driving motor through the bottom driving pulley 15 through belt transmission. The arrangement of the lower supporting seat 3 improves the stability of the driving spindle 4 during rotation, and improves the radial bearing capacity of the driving spindle 4 when the driving spindle 4 rotates. Through the arranged mixing main disk 5 and the liquid medicine atomizing disk 6, the mixing main disk 5 can drive the seeds to rotate, and the liquid medicine atomizing disk 6 can atomize and throw out the liquid medicine injected by the medicine feeding pipe 9, and contact the seeds evenly. Through the arranged air inlet 10, the air inlet 10 is connected to the fan to increase the air pressure in the bottom cavity of the mixing barrel 1, and the dust removal port 8 is connected to the exhaust duct and the air filter. After being weighed and metered, the seeds are fed into the mixing barrel 1 through the seed inlet 7 and fall onto the mixing main disk 5. The reagent dosage value is calculated based on the reagent weight, and the corresponding metered liquid medicine is sent into the mixing barrel 1 through the medicine inlet pipe 9 through the peristaltic pump, and sprayed onto the seeds stirred and rotating on the mixing main disk 5 through the atomization of the liquid medicine atomization disk 6. After the preset stirring time, the emptying door 2 is opened for a period of time, and the seeds are discharged from the emptying door 2 driven by centrifugal force to complete the coating. During the mixing process, the fan inputs air flow to the bottom of the inner cavity of the mixing barrel 1 through the air inlet 10, and the air flow diffuses upward through the gap between the mixing main disk 5 and the mixing barrel 1, which plays a supporting effect. The guide plate 12 is set, and the guide plate 12 can improve the stirring efficiency of the seeds in the mixing barrel 1, reduce the stirring time, and thus reduce the amount of medicine that enters the air flow with the air inlet 10. The speed increaser 13 is set, and the speed increaser 13 can increase the kinetic energy transmitted to the seeds while maintaining the same rotation speed of the mixing main disk 5, thereby enhancing the stirring effect, reducing the requirement for the discharge speed, and improving the discharge effect.

[0037] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An improved seed coating machine, characterized in that: The invention comprises a mixing barrel (1), wherein a lower support seat (3) is fixedly connected to the center of the bottom of the mixing barrel (1), a driving main shaft (4) is rotatably mounted on the center of the lower support seat (3) via a sealed bearing, a mixing main disk (5) is fixedly connected to the upper end of the outer wall of the driving main shaft (4), and a liquid medicine atomizing disk (6) is fixedly connected to the top of the driving main shaft (4), a drain door (2) is arranged on the side wall of the mixing barrel (1) corresponding to the upper edge of the mixing main disk (5), and a discharge cover (14) is fixedly connected to the outer wall of the mixing barrel (1) corresponding to the drain door (2), and a seed inlet (7) is provided on one side of the upper end of the mixing barrel (1). , and a medicine inlet pipe (9) is inserted and fixed on the other side of the upper end of the mixing barrel (1), the bottom end of the medicine inlet pipe (9) is inclined and arranged toward the center above the upper medicine liquid atomizing disk (6), and a dust removal port (8) is arranged at the center of the upper end of the mixing barrel (1), the bottom of the driving main shaft (4) passes through the mixing barrel (1) and is fixedly connected to a driving pulley (15), and an air inlet (10) is arranged on one side of the bottom of the mixing barrel (1), and the inner wall of the mixing barrel (1) is fixedly connected to two guide plates (12) corresponding to the upper end of the mixing main disk (5), and the inner wall of the mixing main disk (5) is fixedly connected to a plurality of speed increasing strips (13) in a circular array.

2. The improved seed coating machine according to claim 1, characterized in that: The main mixing disc (5) is formed by high-precision spinning, and the average gap between the main mixing disc (5) and the inner wall of the mixing barrel (1) is 0.5 mm.

3. The improved seed coating machine according to claim 1, characterized in that: The bottom of the mixing main plate (5) is fixedly connected to a bottom support plate (11), and the outer wall of the mixing main plate (5) is fixedly connected to a limiting convex ring corresponding to the lower edge of the bottom support plate (11), and a rubber sealing gasket is provided between the upper end of the bottom support plate (11) and the bottom of the mixing main plate (5).

4. The improved seed coating machine according to claim 1, characterized in that: The air inlet (10) is connected to a fan via a pipeline, and the output air pressure of the fan is 14 kPa.

5. The improved seed coating machine according to claim 1, characterized in that: The guide plate (12) is an arc-shaped plate designed with an Archimedean spiral, and the lower edge of the guide plate (12) is provided with an inclined edge that tilts inwards and upwards.

6. The improved seed coating machine according to claim 1, characterized in that: The speed-increasing strip (13) is arranged at an angle of 30 degrees to the rotation direction of the mixing main disc (5), and the side surface of the speed-increasing strip (13) is provided with a chamfer with an angle of 75 degrees.

7. The improved seed coating machine according to claim 1, characterized in that: The upper edge of the emptying door (2) is hingedly fixed to the outer wall of the mixing barrel (1), and a pneumatic telescopic rod is arranged between the center of the outer wall of the emptying door (2) and the inner top wall of the discharge cover (14), and the center of the outer wall of the emptying door (2) and the inner top wall of the discharge cover (14) are hingedly connected to both ends of the pneumatic telescopic rod.

Images