Seed coater

Abstract

The utility model provides a kind of seed coating machine, belong to grain mechanical technical field, including rack, and be located on the feeding mechanism of rack, mixing medicine mechanism, drum and drying system;Feeding mechanism is located above mixing medicine mechanism, for to mixing medicine mechanism quantitative feeding good seed;Mixing medicine mechanism is connected with drum, for good seed is mixed in with liquid medicine atomization and is fed into the feed end of drum in mixing medicine mechanism;The inside middle part of drum is equipped with anti wind cap, drying system has the air duct that the discharge end of drum is inserted into drum, air duct is used to send hot air towards anti wind cap;Wherein, anti wind cap is used to guide hot air towards the discharge end of drum back blow.The seed coating machine provided by the utility model, seed has the movement process of first uniform stirring in drum again uniform drying, thereby can improve the integrity and uniformity of seed coating layer, simultaneously can also save liquid medicine, to reduce seed coating cost.

Description

Technical Field

[0001] This utility model belongs to the field of grain machinery technology, specifically relating to a seed coating machine. Background Technology

[0002] Seed coating technology is widely used in the field of grain planting. The coating process usually relies on professional coating equipment. By coating the surface of selected high-quality seeds with a film, the germination rate and stress resistance of the seeds are improved, and the seeds also have the function of preventing and controlling diseases and pests.

[0003] In existing technologies, the working principle of most seed coating equipment is to pass the improved seeds through an atomization chamber to coat them with the coating solution before they enter a drying drum for drying. Seed coating requires ensuring that the entire seed surface is colored. If the coating solution is introduced into the atomization chamber according to the theoretical ratio of the coating solution to the improved seeds, it is difficult to guarantee that the surface of all improved seed particles will be uniformly covered by the coating solution. Therefore, it is usually necessary to increase the amount of coating solution introduced into the atomization chamber to improve the coloring quality of the improved seeds. However, this leads to waste of the coating solution and is not conducive to controlling the cost of seed coating. Utility Model Content

[0004] This utility model provides a seed coating machine, which aims to reduce pesticide waste to control coating costs and improve coating quality.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a seed coating machine is provided, including a frame, and a feeding mechanism, a mixing mechanism, a drum, and a drying system disposed on the frame; the feeding mechanism is located above the mixing mechanism and is used to quantitatively feed the improved seeds into the mixing mechanism; the mixing mechanism is connected to the drum and is used to atomize and mix the liquid medicine with the improved seeds and feed the improved seeds into the feed end of the drum; a reverse air cap is provided in the middle part of the inside of the drum, and the drying system has an air duct extending into the drum from the discharge end of the drum, the air duct being used to blow hot air toward the reverse air cap; wherein, the reverse air cap is used to guide the hot air toward the discharge end of the drum to blow back.

[0006] In one possible implementation, the drug mixing mechanism includes:

[0007] The receiving hopper is located on the frame and is used to receive the good seed discharged by the feeding mechanism. The lower end of the receiving hopper is equipped with a discharge pipe.

[0008] The atomizing box is located below the receiving hopper and connected to the feed end of the roller;

[0009] The atomizing disc is rotatably mounted inside the atomizing box;

[0010] The grain dispenser is located inside the atomizing box and above the atomizing disc. The grain dispenser is used to guide the good seeds falling from the discharge pipe to form a material curtain around the atomizing disc.

[0011] The drug supply system is located on the frame and has a drug delivery tube that extends into the atomizing box and sprays the drug toward the atomizing disc.

[0012] In some embodiments, a branch pipe is connected to the exhaust duct, and the branch pipe is connected to the atomizing box to introduce hot air into the atomizing box.

[0013] For example, the drying system also includes a first temperature sensor and a second temperature sensor; the first temperature sensor is located at the hot air output end of the drying system, and the second temperature sensor is located inside the atomizing box; an air valve is provided on the branch pipe.

[0014] For example, a drug delivery system includes:

[0015] Heated bathtub;

[0016] A medicine storage tank is located inside a heating bath. The medicine storage tank is used to hold the medicine solution and has a medicine outlet pipe that extends out of the heating bath.

[0017] A metering pump, with its inlet end connected to the drug outlet tube and its outlet end connected to the drug delivery tube, is used to pump a metered amount of drug solution into the drug delivery tube.

[0018] In some embodiments, the heating bath and the atomizing box are connected by a cleaning pipeline, which is equipped with a cleaning pump.

[0019] In one possible implementation, a connecting frame is provided inside the receiving hopper, and a sleeve is fixedly connected to the connecting frame. The sleeve extends through the discharge pipe into the atomizing box, and a grain discharge channel suitable for the falling of good seeds is formed between the sleeve and the discharge pipe. The grain dispenser is fixedly connected to the sleeve. The atomizing disc has a rotating drive shaft that rotates through the sleeve.

[0020] In some embodiments, the feeding mechanism includes:

[0021] The grain storage bin is set on the machine frame and used to store improved seeds. The bottom of the grain storage bin is equipped with a grain discharge port.

[0022] A quantitative feeder, located at the grain discharge port, is used to quantitatively feed high-quality seeds into the mixing mechanism;

[0023] A level gauge is installed inside a grain storage silo to detect the level of high-quality seed material within the silo.

[0024] For example, a quantitative feeder includes:

[0025] The feeding star wheel is rotatably connected to the frame and located directly below the grain discharge port. A grain hopper is distributed around the outer periphery of the feeding star wheel, and the top of the feeding star wheel is connected to the grain discharge port.

[0026] The baffle plate is connected to the frame. One end of the baffle plate is connected to the grain discharge port, and the other end extends downward along the outer circumference of the feeding star wheel. The baffle plate elastically presses against the feeding star wheel and closes the grain hopper opposite it.

[0027] A rotary drive unit is mounted on the frame and its output end is connected to the feeding star wheel.

[0028] For example, the frame is equipped with a discharge box, which is connected to the discharge end of the roller. The lower end of the discharge box is equipped with a discharge port, and the upper end of the discharge box is equipped with an exhaust port. The exhaust port is equipped with an induced draft fan for upward air extraction.

[0029] The beneficial effects of the seed coating machine provided by this utility model are as follows: Compared with the prior art, the seed coating machine of this utility model feeds the improved seeds quantitatively into the mixing mechanism through the feeding mechanism, so that the improved seeds are coated with atomized liquid during the process of passing through the mixing mechanism and then enter the drum drying. By setting a reverse air cap in the middle of the inside of the drum, the hot air blown by the drying system to the reverse air cap through the air duct is reflected and guided by the reverse air cap to form a drying airflow that blows back towards the discharge end of the drum. Therefore, the improved seeds coated with liquid will not be dried by hot air during the movement from the feed end of the drum to the reverse air cap, thereby enabling the improved seed particles to be dried. Before drying, the seed granules are stirred to ensure the uniformity and integrity of the coating. When the seed moves between the anti-air hood and the discharge end of the roller, it comes into contact with hot air, causing the coating to be dried and forming a coating layer. During the drying process, the seed is constantly tumbling from the anti-air hood to the discharge end of the roller, which improves the uniformity of contact between the seed and the hot air, thus ensuring the drying effect. This process of uniform stirring followed by uniform drying of the seed coated with the coating layer ensures the integrity and uniformity of the coating layer formed on the seed surface, improving the quality of seed coating.

[0030] In addition, since the improved seeds coated with the drug solution undergo a uniform stirring process before being dried in the drum, the stirring process allows the improved seeds to re-coat the parts of the seed that were not coated with the drug solution in the atomization chamber. In this way, it is only necessary to introduce the drug solution into the atomization chamber according to the normal ratio, without having to increase the amount of drug solution introduced into the atomization chamber, thereby reducing drug solution waste and thus reducing coating costs. Attached Figure Description

[0031] Figure 1 A three-dimensional structural schematic diagram of the seed coating machine provided in an embodiment of this utility model;

[0032] Figure 2 This is a schematic diagram of the internal structure of a seed coating machine provided in an embodiment of the present invention;

[0033] Figure 3 This is a schematic diagram of the structure of the heating bath tub used in the embodiments of this utility model;

[0034] Figure 4 This is a cross-sectional view of the feeding mechanism and mixing mechanism used in an embodiment of the present invention.

[0035] In the diagram: 10. Frame; 20. Feeding mechanism; 21. Grain storage bin; 211. Grain discharge port; 22. Quantitative feeder; 23. Level gauge; 221. Feeding star wheel; 2211. Grain hopper; 222. Baffle plate; 223. Rotary drive component; 30. Mixing mechanism; 31. Receiving hopper; 311. Discharge pipe; 312. Connecting frame; 313. Sleeve; 314. Grain discharge channel; 32. Atomizing box; 33. Atomizing disc; 331. Rotary drive shaft; 34. 35. Grain dispenser; 351. Medicine supply system; 352. Medicine administration pipe; 352. Heating bath; 3521. Cleaning pipeline; 3522. Cleaning pump; 353. Medicine storage tank; 3531. Medicine outlet pipe; 354. Metering pump; 40. Drum; 41. Reverse vent cap; 50. Drying system; 51. Exhaust duct; 52. Branch duct; 53. First temperature sensor; 54. Second temperature sensor; 55. Air valve; 60. Discharge box; 61. Discharge port; 62. Exhaust fan. Detailed Implementation

[0036] To make the technical problems, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0037] It should be noted that when an element is referred to as being "set on" or "connected to" another element, it can be directly on or indirectly on the other element. It should be understood that the terms "upper," "lower," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" or "several" means two or more, unless otherwise explicitly specified.

[0038] Please refer to the following: Figures 1 to 4The seed coating machine provided by this utility model will now be described. The seed coating machine includes a frame 10, and a feeding mechanism 20, a mixing mechanism 30, a drum 40, and a drying system 50 disposed on the frame 10. The feeding mechanism 20 is located above the mixing mechanism 30 and is used to quantitatively feed the improved seeds into the mixing mechanism 30. The mixing mechanism 30 is connected to the drum 40 and is used to atomize and mix the improved seeds with the improved seeds and feed the improved seeds into the feed end of the drum 40. A reverse air cap 41 is provided in the middle part of the inside of the drum 40. The drying system 50 has an air duct 51 extending into the drum 40 from the discharge end of the drum 40. The air duct 51 is used to blow hot air toward the reverse air cap 41. The reverse air cap 41 is used to guide the hot air to blow back toward the discharge end of the drum 40.

[0039] It is important to understand that "good seeds" refers to grains that have been screened and are plump enough to be used as seed. The function of the drum 40 is to move the material by rotating itself. In this embodiment, the good seeds coated with the medicine enter the drum 40 from the feed end. As the drum 40 rotates, it drives the good seeds to continuously tumble towards its discharge end, thereby achieving the dual function of stirring and conveying the good seeds.

[0040] It should be noted that the seed coating machine provided in this embodiment can be a fully automatic device that operates automatically according to the set parameters with a matching control system, or it can be a semi-automatic device that operates according to the design parameters and is based on manual adjustment of some parameters such as seed-to-medicine ratio and drying temperature.

[0041] Compared with the prior art, the seed coating machine provided in this embodiment feeds a quantitative amount of improved seeds into the mixing mechanism 30 through the feeding mechanism 20, so that the improved seeds are coated with atomized medicine during the process of passing through the mixing mechanism 30 and then enter the drum 40 for drying. By setting a reverse air cap 41 in the middle of the inside of the drum 40, the hot air blown by the drying system 50 to the reverse air cap 41 through the air duct 51 is reflected and guided by the reverse air cap 41 to form a drying airflow that blows back towards the discharge end of the drum 40. Therefore, the improved seeds coated with medicine will not be dried by hot air during the movement from the feed end of the drum 40 to the reverse air cap 41, thereby enabling the improved seed granules to be dried by the medicine. Before drying, the seeds are stirred to ensure the uniformity and integrity of the liquid coating on the surface of the seed granules. When the seeds move between the anti-air cap 41 and the discharge end of the roller, they come into contact with hot air, causing the liquid coating on their surface to be dried and form a coating layer. During the drying process, the seeds are in a state of continuous tumbling from the anti-air cap 41 to the discharge end of the roller 40, which improves the uniformity of contact between the seeds and the hot air, thus ensuring the drying effect. This process of uniform stirring and drying of the seeds coated with liquid as they pass through the roller 40 ensures the integrity and uniformity of the coating layer formed on the surface of the seeds, thereby improving the seed coating quality.

[0042] In addition, since the seed coat coated with the solution undergoes a uniform stirring process before drying in the drum 40, the stirring process allows the seed coat to be re-coated with the solution in areas of the atomization chamber that were not previously coated. As a result, only the solution needs to be introduced into the atomization chamber according to the normal ratio, without the need to increase the amount of solution introduced into the atomization chamber, thereby reducing solution waste and lowering coating costs.

[0043] Specifically, considering that the current machinery industry tends to be more inclined towards full automation, the seed coating machine in this embodiment also includes a control system. The feeding mechanism 20, the mixing mechanism 30, the drum 40 and the drying system 50 are all electrically connected to the control system.

[0044] Optionally, the drying system 50 may specifically include a duct, a heater, and a blower. The blower is located at one end of the duct and blows air into the duct. The heater is located inside the duct to heat the air. The hot air enters the drum 40 through the air duct 51 under the action of the blower.

[0045] In some embodiments, see Figures 2 to 4 The mixing mechanism 30 includes a receiving hopper 31, an atomizing box 32, an atomizing disc 33, a grain dispenser 34, and a medicine supply system 35. The receiving hopper 31 is located on the frame 10 and is used to receive the seed discharged by the feeding mechanism 20. The lower end of the receiving hopper 31 is provided with a discharge pipe 311. The atomizing box 32 is located below the receiving hopper 31 and is connected to the feed end of the roller 40. The atomizing disc 33 is rotatably located inside the atomizing box 32. The grain dispenser 34 is located inside the atomizing box 32 and covers the atomizing disc 33. The grain dispenser 34 is used to guide the seed falling from the discharge pipe 311 to form a material curtain around the atomizing disc 33. The medicine supply system 35 is located on the frame 10 and has a medicine delivery pipe 351. The medicine delivery pipe 351 extends into the atomizing box 32 and sprays medicine toward the atomizing disc 33.

[0046] The receiving hopper 31 can adopt a conical bottom structure with a larger top and a smaller bottom, and the dispersant can be conical in shape. After the feeding mechanism 20 continuously feeds the seed into the receiving hopper 31, the seed slides down from the discharge pipe 311 at the bottom of the receiving hopper 31 onto the dispersant 34, and disperses and slides down under the guidance of the dispersant to form a ring of material curtain; at the same time, the drug supply system 35 sprays the drug liquid onto the rotating atomizing disc 33 through the drug delivery pipe 351, so that the drug liquid is atomized and splashed around the atomizing disc 33 onto the material curtain, thereby maximizing the adhesion of drug liquid to all the seed passing through the atomizing box 32. On this basis, the seed is further mixed by rolling in the drum 40, so that the drug liquid evenly covers the entire surface of the seed.

[0047] By using the above-mentioned grain dispenser 34 and atomizing disc 33 to spray the improved seed with pesticide, the pesticide loss can be reduced and the coating cost can be lowered. On the other hand, the uniformity of mixing between the pesticide and the improved seed can be improved, thereby improving the coating quality and efficiency.

[0048] Among some possible implementations, such as Figure 2 As shown, a branch pipe 52 is connected to the exhaust pipe 51, and the branch pipe 52 is connected to the atomizing box 32 to introduce hot air into the atomizing box 32. Since the liquid medicine tends to thicken in low-temperature environments, when the ambient temperature is low, hot air can be introduced into the atomizing box 32 through the branch pipe to heat the atomizing box 32. This prevents the liquid medicine from thickening after being sprayed into the atomizing box 32, which would affect the uniformity of its spraying on the material curtain. This improves the mixing uniformity of the liquid medicine and the seed in low-temperature environments, and helps to improve the adaptability of the coating operation to ambient temperature.

[0049] It should be noted that in some embodiments, please refer to... Figure 2 The drying system 50 also includes a first temperature sensor 53 and a second temperature sensor 54; the first temperature sensor 53 is located at the hot air output end of the drying system 50, and the second temperature sensor 54 is located inside the atomizing box 32; an air valve 55 is provided on the branch pipe 52.

[0050] By setting a first temperature sensor 53 to detect the outlet air temperature of the drying system 50 in real time, the heater of the drying system 50 can stop operating when the outlet air temperature is higher than the set range, and restart the heater when the outlet air temperature drops below the set range. This can reduce the energy consumption of the drying system 50 and prevent the hot air temperature from being too high and scorching the seeds.

[0051] By setting a second temperature sensor 54, the temperature inside the atomizing box 32 can be detected in real time. When the temperature inside the atomizing box 32 is low, the opening of the air valve 55 can be increased to increase the amount of hot air supplied to the atomizing box 32 by the air distribution pipe 52. When the temperature inside the atomizing box 32 is high, the opening of the air valve 55 can be decreased to reduce the flow rate of hot air supplied to the atomizing box 32 by the air distribution pipe 52. This achieves stable temperature control inside the atomizing box 32 and ensures that the atomizing box 32 has suitable atomization temperature conditions.

[0052] Considering equipment automation, both the first temperature sensor 53 and the second temperature sensor 54 are electrically connected to the control system, and the air valve 55 is an electrically controlled valve controlled by the control system. Therefore, the control system can control the heater switching and operating power of the drying system 50 based on the temperature value fed back by the first temperature sensor 53; and control the switching and opening degree of the air valve 55 based on the temperature value fed back by the second temperature sensor 54.

[0053] As an optional implementation of the aforementioned drug delivery system 35, please refer to Figure 2 and Figure 3The drug supply system 35 includes a heated bath 352, a drug storage tank 353, and a metering pump 354. The drug storage tank 353 is located inside the heated bath 352 and is used to contain the drug solution. The drug storage tank 353 has a drug outlet pipe 3531 that extends out of the heated bath 352. The inlet end of the metering pump 354 is connected to the drug outlet pipe 3531, and the outlet end is connected to the drug delivery pipe 351, for metering the drug solution into the drug delivery pipe 351.

[0054] The heated bath tub 352 is based on heating the bath liquid, such as water or oil, inside the tub using a heating pipe, thereby using the temperature of the bath liquid to heat the medicine storage tank 353 placed inside. The heating principle is existing technology and will not be described in detail here.

[0055] In this embodiment, the purpose of heating the medicine storage tank 353 using the heating bath 352 is twofold. Firstly, the heating bath 352 forms an insulation layer around the medicine storage tank 353, thereby creating a stable temperature environment inside the medicine storage tank 353, which helps reduce heat loss and thus lowers energy consumption. The liquid medicine in the medicine storage tank 353 is pumped by the metering pump 354 through the dispensing pipe 3531 into the administration pipe 351 and then sprayed onto the atomizing disc 33. The flow rate of the medicine being sprayed into the atomizing box 32 can be controlled by adjusting the flow rate of the metering pump 354, thus maintaining a consistent ratio of liquid medicine to seed, reducing waste and saving coating costs.

[0056] For some possible implementations, please refer to [link / reference]. Figure 2 The aforementioned heating bath 352 and atomizing box 32 are connected via a cleaning pipe 3521, which is equipped with a cleaning pump 3522. Since the medication tends to stick to the walls of the atomizing box 32, clean water can be used as the bathing solution in the heating bath 352. When cleaning the atomizing box 32 is required, simply turn on the cleaning pump 3522 to pump the clean water into the heating bath 352. Because the clean water in the heating bath 352 is hot water, it can easily rinse off the medication adhering to the walls of the atomizing box 32. After cleaning, simply add water to the heating bath 352. This not only facilitates cleaning the atomizing box 32 but also saves time and effort during the cleaning process.

[0057] For cleaning the atomizing disc 33 and the drug delivery tube 351, after each coating operation, the drug storage tank 353 can be filled with cleaning water, and then the cleaning water can be pumped to the drug delivery tube 351 through the metering pump 354. The atomizing disc 33 can then be rinsed through the drug delivery tube 351. The cleaning method is simple and convenient.

[0058] In some embodiments, the above-mentioned grain dispenser 34 and atomizing disc 33 adopt... Figure 4The connection structure shown in the figure has a connecting frame 312 inside the receiving hopper 31, and a sleeve 313 is fixedly connected to the connecting frame 312. The sleeve 313 passes through the discharge pipe 311 and extends into the atomizing box 32. A grain discharge channel 314 suitable for the falling of good seeds is formed between the sleeve 313 and the discharge pipe 311. The grain dispenser 34 is fixedly connected to the sleeve 313. The atomizing disc 33 has a rotating drive shaft 331 that is rotatably inserted inside the sleeve 313.

[0059] Since the connecting structure inside the atomizing box 32 can easily obstruct the atomization and splashing path of the feed curtain and the liquid medicine, the receiving hopper 31 is used as the installation base. A connecting frame 312 is set inside the receiving hopper 31 as a support for the sleeve 313. The sleeve 313 extends through the discharge pipe 311 into the atomizing box 32 to provide a fixing point for the grain dispenser 34. On this basis, the rotating drive shaft 331 of the atomizing disc 33 is rotatably connected to the sleeve 313. This allows the drive source of the rotating drive shaft 331, such as a motor, to establish a transmission connection inside the receiving hopper 31. As a result, the grain dispenser 34 and the atomizing disc 33 are both suspended within the atomizing box 32, thus ensuring the smoothness of the seed drop and the atomization and splashing of the liquid medicine.

[0060] In addition, the sleeve 313 also serves to form an annular grain discharge channel 314 between itself and the wall of the discharge pipe 311. This allows the good seed in the receiving hopper 31 to form a material ring after passing through the grain discharge channel 314. The grain disperser 34 then guides the material ring to further diffuse and slide down to form a material curtain, which helps to improve the uniformity of the material curtain and thus improve the mixing uniformity of the liquid medicine and the good seed.

[0061] Optionally, the feeding mechanism 20 used in this embodiment is as follows: Figure 4 As shown, the feeding mechanism 20 includes a grain storage bin 21, a quantitative feeder 22, and a level gauge 23; wherein, the grain storage bin 21 is set on the frame 10 and is used to store improved seeds, and the bottom of the grain storage bin 21 is provided with a grain discharge port 211; the quantitative feeder 22 is set at the grain discharge port 211 and is used to quantitatively feed improved seeds into the mixing mechanism 30; the level gauge 23 is set inside the grain storage bin 21 and is used to detect the level of improved seeds inside the grain storage bin 21.

[0062] The high-quality seeds contained in the grain storage bin 21 can be evenly fed into the mixing mechanism 30 using the quantitative feeder 22. As the grain storage bin 21 is continuously discharged, the level of the grain storage bin 21 can be known at any time through the level gauge 23, so that it is convenient to fill the grain storage bin 21 in time when the high-quality seeds are insufficient. The quantitative feeder 22 can achieve precise feeding of the mixing mechanism 30, which is conducive to improving the accuracy of the mixing ratio of medicine and high-quality seeds, thereby saving medicine.

[0063] It should be noted that the aforementioned level gauge 23 can be an electronic level gauge 23, electrically connected to the control system, used to provide real-time feedback on the seed level in the storage silo to the control system; the control system controls the discharge flow rate of the quantitative discharger 22 based on the seed level, and controls the liquid flow rate of the metering pump 354 based on the discharge flow rate of the quantitative discharger 22. When the seed level is lower than the set range, the control system controls the quantitative discharger 22 to reduce the discharge flow rate to avoid shutdown caused by emptying the grain storage silo 21. At the same time, the control system also controls the metering pump 354 to reduce the flow rate, thereby maintaining a consistent ratio of liquid medicine and seed, and avoiding waste of liquid medicine.

[0064] For details, see Figure 4 The aforementioned quantitative feeder 22 includes a feeding star wheel 221, a baffle plate 222, and a rotary drive 223. The feeding star wheel 221 is rotatably connected to the frame 10 and located directly below the grain discharge port 211. A ring of grain hoppers 2211 is distributed around the outer periphery of the feeding star wheel 221, and the top of the feeding star wheel 221 is in contact with the grain discharge port 211. The baffle plate 222 is connected to the frame 10. One end of the baffle plate 222 is in contact with the grain discharge port 211, and the other end extends downward along the outer periphery of the feeding star wheel 221. The baffle plate 222 elastically presses against the feeding star wheel 221 and closes the grain hopper 2211 opposite to it. The rotary drive 223 is located on the frame 10 and its output end is connected to the feeding star wheel 221.

[0065] The rotary drive 223 can be a motor. The rotary drive 223 drives the feeding star wheel 221 to rotate, so that the grain storage box falls into the grain hopper 2211 that travels to the grain outlet 211. After passing through the rotational area closed by the baffle plate 222, the seed falls into the mixing mechanism 30. Since the volume of each grain hopper 2211 is fixed, the feeding flow of the feeding star wheel 221 into the mixing mechanism 30 can be controlled by controlling the rotation speed of the rotary drive 223. The structure is simple and compact.

[0066] To prevent the feeding star wheel 221 from jamming, the baffle plate 222 is connected to the frame 10 in an elastic manner. This allows the feeding star wheel 221 to disengage from the feeding star wheel 221 when a jamming problem occurs, due to the squeezing action of the material inside the grain hopper 2211. This causes the jammed material to fall out of the grain hopper 2211, improving the stability of equipment operation, reducing downtime due to malfunctions, and thus improving work efficiency.

[0067] Specifically, at least two sliding rods are spaced apart on the side of the baffle plate 222 away from the feeding star wheel 221 and slidably pass through the frame 10. Springs are sleeved on the sliding rods, and the springs are located between the frame 10 and the baffle plate 222 and are in a compressed state. Thus, the springs can provide an elastic pushing force to the baffle plate 222 so that the baffle plate 222 elastically presses against the outer periphery of the feeding star wheel 221. When the extrusion force of the material on the baffle plate 222 exceeds the elastic force of the spring, the baffle plate 222 can be driven to detach from the feeding star wheel 221, thereby opening the grain hopper 2211. The structure is simple and highly reliable.

[0068] In some embodiments, please refer to Figure 1 and Figure 2 The frame 10 is equipped with a discharge box 60, which is connected to the discharge end of the roller 40. The lower end of the discharge box 60 is equipped with a discharge port 61, and the upper end of the discharge box 60 is equipped with an exhaust port. The exhaust port is equipped with an induced draft fan 62 for upward air extraction.

[0069] Considering that the hot air entering the roller 40 will enter the discharge box 60 along with the seed product after being reflected by the air vent 41, and the seed product can be directly bagged and packaged after falling from the discharge port 61, if the hot air is discharged from the discharge port 61, it will affect the normal bagging and packaging work. Therefore, an exhaust fan 62 is installed at the upper exhaust port of the discharge box 60. The exhaust fan 62 is used to draw the hot air entering the discharge box 60 upward, so that the hot air is discharged from the exhaust port and the discharge port 61 is not overheated.

[0070] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A seed coating machine, characterized in that, It includes a frame, and a feeding mechanism, a mixing mechanism, a drum and a drying system disposed on the frame; The feeding mechanism is located above the mixing mechanism and is used to quantitatively feed the improved seed into the mixing mechanism; the mixing mechanism is connected to the drum and is used to atomize and mix the liquid medicine with the improved seed and feed the improved seed into the feed end of the drum; The inner middle part of the drum is provided with a reverse air cap, and the drying system has an air duct that extends into the drum from the discharge end of the drum. The air duct is used to blow hot air toward the reverse air cap. The anti-air cap is used to guide hot air to blow back towards the discharge end of the roller.

2. The seed coating machine as described in claim 1, characterized in that, The drug mixing mechanism includes: A receiving hopper is provided on the frame and is used to receive the good seed discharged by the feeding mechanism. The lower end of the receiving hopper is provided with a discharge pipe. An atomizing box is located below the receiving hopper and connected to the feed end of the roller; The atomizing disc is rotatably mounted inside the atomizing box; A grain distributor is located inside the atomizing box and above the atomizing disc. The grain distributor is used to guide the good seeds falling from the discharge pipe to form a material curtain around the atomizing disc. A drug delivery system is provided on the frame and has a drug delivery tube that extends into the atomizing box and sprays drug toward the atomizing disc.

3. The seed coating machine as described in claim 2, characterized in that, The exhaust duct is connected to a branch duct, which is connected to the atomizing box to introduce hot air into the atomizing box.

4. The seed coating machine as described in claim 3, characterized in that, The drying system also includes a first temperature sensor and a second temperature sensor; the first temperature sensor is located at the hot air output end of the drying system, and the second temperature sensor is located inside the atomizing box; the branch pipe is equipped with an air valve.

5. The seed coating machine as described in claim 2, characterized in that, The drug delivery system includes: Heated bathtub; A medicine storage tank is disposed inside the heating bath, the medicine storage tank is used to contain the medicine liquid, and the medicine storage tank has a medicine outlet pipe extending out of the heating bath; A metering pump, with its inlet end connected to the drug outlet tube and its outlet end connected to the drug delivery tube, is used to pump a metered amount of drug solution into the drug delivery tube.

6. The seed coating machine as described in claim 5, characterized in that, The heating bath tub and the atomizing box are connected by a cleaning pipeline, and a cleaning pump is installed on the cleaning pipeline.

7. The seed coating machine as described in claim 2, characterized in that, The receiving hopper is equipped with a connecting frame, and a sleeve is fixedly connected to the connecting frame. The sleeve passes through the discharge pipe and extends into the atomizing box, forming a grain discharge channel suitable for the falling of good seeds between the sleeve and the discharge pipe. The grain disperser is fixedly connected to the sleeve. The atomizing disc has a rotating drive shaft that rotates through the sleeve.

8. The seed coating machine as described in claim 1, characterized in that, The feeding mechanism includes: A grain storage bin is installed on the frame and used to store improved seeds. The bottom of the grain storage bin is provided with a grain discharge port. A quantitative feeder, located at the grain discharge port, is used to quantitatively feed the improved seeds into the mixing mechanism; A level gauge is installed inside the grain storage silo to detect the level of high-quality seed material inside the silo.

9. The seed coating machine as described in claim 8, characterized in that, The quantitative feeder includes: A feeding star wheel is rotatably connected to the frame and located directly below the grain discharge port. A grain hopper is distributed around the outer periphery of the feeding star wheel, and the top of the feeding star wheel is connected to the grain discharge port. A baffle plate is connected to the frame. One end of the baffle plate is connected to the grain discharge port, and the other end extends downward along the outer periphery of the feeding star wheel. The baffle plate elastically presses against the feeding star wheel and closes the grain hopper opposite it. A rotary drive is mounted on the frame and its output end is connected to the feeding star wheel.

10. The seed coating machine according to any one of claims 1-9, characterized in that, The frame is equipped with a discharge box, which is connected to the discharge end of the roller. The lower end of the discharge box is equipped with a discharge port, and the upper end of the discharge box is equipped with an exhaust port. The exhaust port is equipped with an induced draft fan for upward air extraction.

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