Quantitative split charging device for forage grass seeds

Abstract

The invention provides a forage grass seed quantitative subpackaging device, and relates to the technical field of seed subpackaging, the forage grass seed quantitative subpackaging device comprises a subpackaging assembly and a conveying assembly, the subpackaging assembly comprises a machine box, a containing hopper used for containing forage grass seeds is fixed to the top end of the machine box, a quantitative discharging mechanism is arranged in the machine box and used for forage grass seed quantitative subpackaging, and a material returning mechanism is arranged on one side of the machine box. The quantitative discharging mechanism comprises a discharging pipe arranged in the machine box, a blanking pipe is fixed to the top end of the discharging pipe, a weighing part is fixed to the bottom end of the discharging pipe and comprises a box body and a baffle fixed to the outer side of the box body, and the box body and the baffle are both arranged at the bottom end of the discharging pipe; a movable block is arranged in the box body in a sliding mode, a protruding part is arranged at the bottom end of the movable block, and at least one weighing mechanism is arranged in the box body and located on the outer side of the protruding part. The device is high in seed quantification precision and high in subpackaging efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of seed packaging, and in particular to a forage seed quantitative packaging device. Background Art

[0002] Forage seeds are seeds used to grow forage grass. After being processed and inspected, forage seeds need to be packaged according to certain specifications and quantities for easy transportation, storage and sales. Forage seed packaging mainly includes a series of processes such as transporting seeds from bulk warehouses to feeding boxes, weighing, loading into containers, sealing, labeling, etc. In order to achieve quantitative packaging of seeds, there are devices for quantitative packaging of seeds in the prior art, such as a quantitative packaging device for forage seeds with publication number CN216233132U, a quantitative packaging machine for screening seeds for agricultural planting with publication number CN112061442A, etc.

[0003] At present, in the prior art, seeds are dropped onto a scale for weighing, and the seeds are packaged after the required amount of seeds is weighed. However, after the scale has weighed the required amount of seeds, the seeds cannot be stopped from continuing to fall in time. Therefore, the seeds on the scale often exceed the required amount during packaging, and the quantitative packaging error is large. In addition, the excess seeds need to be taken out manually, which is inconvenient to operate and increases the workload of personnel. Summary of the invention

[0004] In view of this, the purpose of the present invention is to provide a forage seed quantitative packaging device to solve the problems of large seed quantitative packaging error, inconvenient operation and large workload of personnel in the prior art.

[0005] The present invention is achieved through the following technical solutions:

[0006] The quantitative packaging device for forage seeds comprises a packaging component and a conveying component. The packaging component comprises a chassis. A hopper for containing forage seeds is fixed on the top of the chassis. A quantitative unloading mechanism is arranged inside the chassis for quantitative packaging of forage seeds. A return mechanism is arranged on one side of the chassis to facilitate the return of seeds exceeding the weight into the hopper for repackaging.

[0007] The quantitative feeding mechanism includes a feeding tube arranged inside the chassis, a feeding tube is fixed at the top end of the feeding tube, a weighing part is fixed at the bottom end of the feeding tube, the weighing part includes a box body and a baffle fixed at the outside of the box body, the box body and the baffle are both arranged at the bottom end of the feeding tube, a movable block is slidably arranged inside the box body, and a protrusion is arranged at the bottom end of the movable block, at least one group of weighing mechanisms is arranged outside the protrusion inside the box body, when the weight of the forage seeds falling on the movable block reaches the set weight value, the bottom of the feeding tube opens to allow the forage seeds to fall and be packaged.

[0008] Furthermore, the weighing mechanism includes a bottom plate fixed inside the box body, a spring and a weighing sensor are fixed on the top of the bottom plate, the spring and the weighing sensor are both arranged at the bottom of the movable block, and the spring is fixedly connected to the movable block. After the seeds fall into the movable block, the weighing sensor is pressed down to achieve weighing of the seeds on the movable block.

[0009] Furthermore, the rear end of the baffle extends out of the rear end of the chassis and is slidably connected to the chassis, and an electric push rod for driving the baffle to move is fixed to the rear end of the chassis; slideways are provided at the bottom of both sides of the discharge pipe, and the two slides are respectively fixed to the two side walls inside the chassis on the side away from the discharge pipe, and the two slides are respectively provided on the outside of both sides of the baffle for guiding the baffle, thereby improving the stability of the baffle movement.

[0010] Furthermore, a discharge hopper is provided at the bottom of the box body, and the box body is slidably connected to the discharge hopper, and the two sides of the discharge hopper are respectively fixed to the two side walls inside the chassis, and the bottom end of the box body is provided with a discharge port 1 that matches the raised portion of the movable block, and the top end of the discharge hopper is provided with a discharge port 2 that communicates with the discharge port 1; when the weight of the forage seeds falling on the movable block reaches the weight value set by the weighing sensor, the top surface of the movable block is flush with the bottom end surface of the discharge tube, and at the same time, the bottom end of the movable block enters into the discharge port 1 and the bottom end surface of the movable block is flush with the top surface of the discharge hopper, and then the electric push rod drives the box body, the movable block and the baffle to move backward and remove them from the bottom of the discharge tube, opening the bottom end of the discharge tube, and the weighed seeds can fall down for packaging.

[0011] Furthermore, the material return mechanism includes a hoist and a vacuum pump, the air inlet of the vacuum pump is connected to the hoist to facilitate drawing negative pressure in the hoist, the feed end of the hoist is connected to one side of the feed pipe through a suction pipe, the suction pipe runs through the top of the chassis, and the end of the suction pipe close to the feed pipe extends into the feed pipe, and the discharge end of the hoist is arranged at the top of the hopper, which is convenient for conveying the forage seeds in the feed pipe that exceed the set weight into the hopper for repackaging, without manual operation, simple and convenient operation, and avoiding increasing the workload of personnel.

[0012] Furthermore, a rotating shaft is rotatably installed inside the chassis at the rear side of the discharge pipe, a gear and a cam are fixed on the rotating shaft, the cam is arranged at the rear side of the discharge pipe, the gear is located on one side of the discharge pipe, and a rack is meshed at the bottom end of the gear, the rack is fixed to the box body, and an opening is provided on the rear side of the chassis for the baffle and the rack to pass through, when the seeds in the discharge pipe fall, the cam is driven to knock the rear end of the discharge pipe to cause the discharge pipe to vibrate slightly, which is conducive to shaking off the seeds in the discharge pipe and improving the seed packaging efficiency.

[0013] Furthermore, the hopper and the drop pipe are connected by a pipe, and an electric valve is fixed on the pipe. A plurality of staggered conical blocks are fixed inside the drop pipe by a support rod, and the cross-section of the support rod is triangular. When the seeds in the drop pipe fall, they are dispersed and fall outwards by the dividing effect of the support rod and the conical blocks, so as to avoid the seeds from piling up when falling.

[0014] Furthermore, the chassis is provided with a heat dissipation mechanism, which includes a fan and a filter box respectively fixed on both sides of the chassis, an air duct one is fixed between the feed pipe and a side wall of the chassis close to the fan, and an air duct two is fixed between the feed pipe and a side wall of the chassis close to the filter box, and protective nets are fixed at the pipe openings of the air duct one and the air duct two close to the feed pipe. When the forage seeds fall in the feed pipe, the airflow blown out by the fan passes through the air duct one, the feed pipe and the air duct two and enters the filter box, thereby realizing heat dissipation of the forage seeds.

[0015] Furthermore, a filter bag is provided in the filter box, and a hanging frame located outside the air duct two is fixed to the inner wall of the filter box on one side close to the air duct two, and the bag mouth of the filter bag is hung on the hanging frame, and the filter bag is used to filter impurities in the airflow; an air duct is fixed to the top of the filter box, and the end of the air duct away from the filter box passes through one side of the hopper and extends into the interior of the hopper, and an outlet pipe with a one-way valve is fixed to a section of the air duct located in the hopper, and the airflow after filtering impurities in the filter box passes through the air duct and the outlet pipe into the grass seeds in the hopper to dissipate heat for the grass seeds; the hoist and the vacuum pump are both fixed to the top of the filter box, and the hoist and the vacuum pump are both arranged on the front side of the air duct, and the suction pipe is arranged above the air duct two.

[0016] Furthermore, the bottom end of the chassis is supported by a frame, and the conveying assembly includes a conveyor arranged at the bottom of the chassis, and the conveyor is used to convey the forage seed packaging container.

[0017] The beneficial effects of the present invention are:

[0018] 1. The forage seed quantitative packaging device, the forage seeds fall onto the movable block in the feeding tube for weighing. When the seed weight on the movable block reaches the set weight value, the top surface of the movable block is flush with the bottom surface of the feeding tube, and the bottom surface of the movable block is flush with the top surface of the discharge hopper. The movable block can be moved out of the bottom end of the feeding tube to open the feeding tube, and the seeds are quantitatively packaged. If the seed weight on the movable block does not reach the set value, the movable block cannot be moved out of the feeding tube due to the obstruction of the feeding tube and the discharge hopper, preventing the bottom end of the feeding tube from opening, and the seeds will not fall for packaging, thereby improving the seed quantitative accuracy;

[0019] 2. The forage seed quantitative packaging device transports the seeds on the movable block to the hopper for repackaging under the action of negative pressure, automatically adjusts the weight of the seeds on the movable block, is quick and convenient to operate, and reduces the workload of personnel;

[0020] 3. The forage seed quantitative packaging device drives the cam to knock the rear end of the feeding tube when the seeds in the feeding tube fall. The micro-vibration of the feeding tube is conducive to shaking off the seeds in the feeding tube, thereby improving the seed packaging efficiency;

[0021] 4. The forage seed quantitative packaging device uses the airflow ejected by the fan to dissipate the heat of the seeds accumulated in the hopper. Then the seeds falling from the hopper are dispersed and dropped by the support rods and conical blocks, and the airflow dissipates the heat of the falling seeds, thereby improving the air permeability of the seeds and greatly reducing the probability of seeds heating and mildewing.

[0022] Other advantages, objectives and features of the present invention will be described in the following description to some extent, and to some extent, will be obvious to those skilled in the art based on the following examination and study, or can be taught from the practice of the present invention. The objectives and other advantages of the present invention can be realized and obtained through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is the overall structure diagram of the present invention;

[0024] Figure 2 It is a rear view of the sub-assembly assembly of the present invention;

[0025] Figure 3 It is a schematic diagram of the partial structure of the subassembly component of the present invention;

[0026] Figure 4 for Figure 3 Schematic diagram of the local structure;

[0027] Figure 5 A side cross-sectional view of the internal structure of the chassis of the present invention;

[0028] Figure 6 for Figure 5 A partial enlarged view of middle A;

[0029] Figure 7 It is a structural diagram of the box body and baffle of the present invention;

[0030] Figure 8 It is a cross-sectional view of the blanking tube of the present invention;

[0031] Fig. 9 It is a schematic diagram of the local structure of the heat dissipation mechanism of the present invention;

[0032] Fig.10 for Fig. 9 Front cross-sectional view.

[0033] In the figure: 1. Chassis; 2. Hopper;

[0034] 3. quantitative feeding mechanism; 31. feeding pipe; 32. feeding pipe; 321. supporting rod; 322. conical block;

[0035] 33. Weighing part, 331. Box body; 332. Movable block; 333. Bottom plate; 334. Weighing sensor; 335. Spring; 336. Baffle; 337. Electric push rod; 338. Feeding port 1;

[0036] 34. Discharging hopper; 35. Discharging port 2; 36. Rotating shaft; 37. Gear; 38. Rack; 39. Cam; 310. Slideway;

[0037] 4. Heat dissipation mechanism; 41. Fan; 42. Air duct 1; 43. Air duct 2; 44. Filter box; 45. Hanging frame; 46. Filter bag; 47. Air duct; 48. Exhaust pipe; 49. Protective net;

[0038] 5. Material return mechanism; 51. Elevator; 52. Vacuum pump; 53. Material suction pipe;

[0039] 6. Frame; 7. Conveyor; 8. Opening. DETAILED DESCRIPTION

[0040] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0041] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0042] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0043] In the above description of the present invention, it should be noted that the terms "one side", "the other side", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of the invention is usually placed when in use, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0044] In addition, the term "same" does not mean that the parts must be absolutely the same, but slight differences are allowed. The term "vertical" only means that the positional relationship between the parts is more vertical than "parallel", and does not mean that the structure must be completely vertical, but can be slightly tilted.

[0045] See also Figure 1-Figure 2 The present invention provides a technical solution: a quantitative packaging device for forage seeds, including a packaging component and a conveying component. The packaging component includes a chassis 1, the bottom end of the chassis 1 is supported by a frame 6, a hopper 2 for containing forage seeds is fixed on the top of the chassis 1, and a quantitative unloading mechanism 3 is provided inside the chassis 1 for quantitative packaging of forage seeds. A control machine for controlling the operation of the electrical equipment of the device is fixed at the front end of the chassis 1. The control machine uses ABB3BHE005789R0001, which is a specific model of controller, relay module type electrical control equipment, responsible for executing complex logic control tasks, and controlling the operation and stop of electrical equipment according to input signals or instructions.

[0046] Then, if Figure 1 As shown, the conveying assembly includes a conveyor 7 arranged at the bottom of the chassis 1. The conveyor 7 uses a DJ200 belt conveyor, which has the characteristics of compact structure, small footprint, reliable operation, easy maintenance and strong versatility. The conveyor 7 is used to transport the forage seed packaging container. The forage seeds packaged by the packaging assembly fall into the packaging container and are transported to the next workstation by the conveyor 7.

[0047] like Figure 3-Figure 7 As shown, the quantitative feeding mechanism 3 includes a feeding pipe 31 arranged inside the chassis 1, a feeding pipe 32 is fixed on the top of the feeding pipe 31, the hopper 2 is connected to the feeding pipe 32 by a pipeline, and an electric valve is fixed on the pipeline. The GDB series electric valve is selected, which is connected by an electric actuator and a valve to become an electric valve after installation and debugging. The electric valve uses electrical energy as power to connect the electric actuator to drive the valve, realize the opening and closing and adjustment of the valve, thereby achieving the purpose of opening and closing or adjusting the pipeline.

[0048] Next, a weighing part 33 is fixed at the bottom end of the discharge tube 31, and the weighing part 33 includes a box body 331 and a baffle 336 fixed to the outside of the box body 331. The box body 331 and the baffle 336 are both arranged at the bottom end of the discharge tube 31. The rear end of the baffle 336 extends out of the rear end of the chassis 1 and is slidably connected to the chassis 1. An electric push rod 337 for driving the baffle 336 to move is fixed to the rear end of the chassis 1. The electric push rod 337 uses the DT series, such as the DT500 electric push rod, which is suitable for various complex or simple process flows and has the advantages of compact structure, easy installation, reliable use, simple maintenance, energy saving, etc.

[0049] A movable block 332 is slidably provided in the box body 331, and a protrusion is provided at the bottom end of the movable block 332. At least one set of weighing mechanisms is provided inside the box body 331 outside the protrusion. The weighing mechanism includes a bottom plate 333 fixed inside the box body 331, and a spring 335 and a weighing sensor 334 are fixed to the top of the bottom plate 333. The spring 335 and the weighing sensor 334 are both arranged at the bottom of the movable block 332, and the spring 335 is fixedly connected to the movable block 332. The weighing sensor 334 uses the PFTL101BE-2.0-3BSE004214R1 weighing sensor of ABB Company, which has the characteristics of high precision, strong protection level, firmness and durability, etc. The weight value of the weighing sensor 334 is set in advance.

[0050] At the same time, a discharge hopper 34 is provided at the bottom of the box body 331, and the box body 331 is slidably connected to the discharge hopper 34. The two sides of the discharge hopper 34 are fixed to the two side walls inside the chassis 1 through connecting plates. The bottom end of the box body 331 is provided with a discharge port 1 338 matching the raised portion of the movable block 332, and the top end of the discharge hopper 34 is provided with a discharge port 2 35 communicating with the discharge port 1 338.

[0051] During packaging, the control machine controls the electric valve to open so that the grass seeds in the hopper 2 can fall onto the movable block 332 through the drop tube 32. When the grass seeds on the movable block 332 gradually increase, the movable block 332 is pressed down, so that the movable block 332 presses down the weighing sensor 334. When the weight of the grass seeds falling on the movable block 332 reaches the set weight value, it is the amount of grass seeds that need to be packaged. At this time, the top surface of the movable block 332 is flush with the bottom surface of the drop tube 31, and the movable block 33 2 The bottom end enters into the discharge port 338 and the bottom end surface of the movable block 332 is flush with the top end surface of the discharge hopper 34. At this time, the control machine controls the electric push rod 337 to start and drive the baffle 336 to move backward, thereby driving the box body 331 and the movable block 332 to move backward so that the bottom end of the discharge tube 31 is opened. At the same time, the top end surface of the movable block 332 moves along the bottom end surface of the discharge tube 31 to scrape off the seeds weighed on the movable block 332, and the seeds fall into the discharge hopper 34 and then fall into the packaging container to achieve quantitative packaging.

[0052] In this embodiment, slideways 310 are provided at the bottom of both sides of the discharge pipe 31. The two slideways 310 are fixed to the inner side walls of the chassis 1 through connecting rods. The two slideways 310 are respectively provided on the outside of both sides of the baffle 336. The baffle 336 slides along the slideways 310 to guide the forward and backward movement of the baffle 336.

[0053] If the seed weight on the movable block 332 does not reach the set value, there are two situations:

[0054] 1. The weight of the seeds on the movable block 332 is less than the set weight, and the movable block 332 has not moved down to the correct position, that is, the top surface of the movable block 332 is higher than the bottom surface of the feeding tube 31, and the movable block 332 is blocked by the feeding tube 31 and cannot be moved out of the feeding tube 31. At this time, the bottom end of the feeding tube 32 will not open, so the seeds will not fall down for packaging, thereby improving the quantitative accuracy of the seeds;

[0055] 2. The weight of the seeds on the movable block 332 is greater than the set weight, and the movable block 332 moves down too much, that is, the bottom end surface of the movable block 332 passes through the discharge port 1 338 and enters the discharge port 2 35. The movable block 332 is blocked by the discharge hopper 34 and cannot be moved out of the discharge pipe 31. At this time, the bottom end of the discharge pipe 32 will not open, so the seeds will not fall and be packaged, thereby improving the seed quantitative accuracy; and at this time:

[0056] like Figure 1-Figure 5 As shown, a material return mechanism 5 is provided on one side of the chassis 1, and the material return mechanism 5 includes a lifter 51 and a vacuum pump 52. The air inlet of the vacuum pump 52 is connected to the lifter 51 to facilitate the extraction of negative pressure in the lifter 51. In order to prevent the seeds in the lifter 51 from entering the vacuum pump 52, a filter screen can be installed on the suction pipe 53 to prevent the seeds from being blocked. The feed end of the lifter 51 is connected to one side of the feed pipe 31 through the suction pipe 53. The suction pipe 53 runs through the top of the chassis 1, and the end of the suction pipe 53 close to the feed pipe 31 extends into the feed pipe 31. The discharge end of the lifter 51 is set at the top of the hopper 2. The vacuum pump 52 sucks the air in the lifter 51 so that negative pressure is generated in the lifter 51. Under the action of the negative pressure, the seeds on the movable block 332 are sucked into the lifter 51 through the suction pipe 53, and then transported to the hopper 2 by the lifter 51 for repackaging. The seed weight on the movable block 332 can be automatically adjusted, the operation is quick and convenient, and the workload of personnel is reduced.

[0057] In this embodiment, the elevator 51 uses a LS113 small screw conveyor with a screw diameter of 113 mm, a conveying capacity of 1-2 tons / hour, a motor power of 0.75 kW, and a speed of 60-80 rpm, which is suitable for powdery or small particle materials such as cement, grain, etc.

[0058] In this embodiment, the vacuum pump 52 uses a VAA series vacuum pump, which has the following characteristics: pollution-free transmission, maintenance-free, installation in any direction, allowing the medium to be rich in water vapor, 24-hour continuous operation, small size, and low energy consumption.

[0059] In this embodiment, if Figure 3-Figure 5 As shown, a rotating shaft 36 is rotatably installed inside the chassis 1 at the rear side of the feeding tube 31, a gear 37 and a cam 39 are fixed on the rotating shaft 36, the cam 39 is arranged at the rear side of the feeding tube 31, the gear 37 is located at one side of the feeding tube 31, and a rack 38 is meshed at the bottom end of the gear 37, the rack 38 is installed at one side of the box body 331 through a connecting plate, and an opening 8 is opened at the rear side of the chassis 1 for the baffle 336, the rack 38 and the connecting plate to pass through;

[0060] When the baffle 336 and the box body 331 move to cause the seeds in the discharge tube 31 to fall, the rack 38 is driven to move backward, and the rack 38 drives the gear 37 to rotate and drives the rotating shaft 36 to rotate. The rotation of the rotating shaft 36 drives the cam 39 to rotate and knock on the rear end of the discharge tube 31. The micro-vibration of the discharge tube 31 is conducive to shaking out the seeds in the discharge tube 31, thereby improving the seed packaging efficiency.

[0061] Furthermore, from the beginning of the packaging work, the seeds are piled together in the hopper 2 and during the falling process. The air permeability between the seeds is poor, and the carbon dioxide exhaled by the seeds cannot be discharged, which is easy to cause carbon dioxide poisoning of the seeds. In addition, the heat generated by the seeds cannot be dissipated, which is easy to increase the probability of subsequent seed heating and mildew. In order to avoid the above problems, Figure 5 and Figure 8 As shown, in this embodiment, a plurality of staggered conical blocks 322 are fixed inside the drop tube 32 by a support rod 321, and the cross section of the support rod 321 is triangular. When the seeds in the drop tube 32 fall, they are dispersed and fall outwards by the dividing effect of the support rod 321 and the conical blocks 322.

[0062] Next, a heat dissipation mechanism 4 is provided on the chassis 1, and the heat dissipation mechanism 4 includes a fan 41 and a filter box 44 respectively fixed on both sides of the chassis 1. The fan 41 uses the Detong C6-48 fan. This series of fans has the remarkable characteristics of large air volume, high air pressure, not easy to accumulate dust, wear resistance, long service life, etc. The filter box 44 has a box door, and the hoist 51 and the vacuum pump 52 are both fixed to the top of the filter box 44. An air duct 1 42 is fixed between the feed pipe 31 and a side wall of the chassis 1 close to the fan 41, and an air duct 2 43 is fixed between the feed pipe 31 and a side wall of the chassis 1 close to the filter box 44. The suction pipe 53 is arranged at the air duct 1. Above the air duct 43, a protective net 49 is fixed at the pipe openings of the air duct 1 42 and the air duct 2 43 near the discharge pipe 31, a filter bag 46 is arranged in the filter box 44, and the filter bag 46 is used to filter impurities in the airflow, and an air duct 47 is fixed at the top of the filter box 44, and the end of the air duct 47 away from the filter box 44 passes through one side of the hopper 2 and extends into the hopper 2, and an air outlet pipe 48 with a one-way valve is fixed on a section of the air duct 47 located in the hopper 2, and a hoist 51 and a vacuum pump 52 are both arranged on the front side of the air duct 47, and the airflow after filtering impurities in the filter box 44 enters the hopper 2 through the air duct 47 and the air outlet pipe 48;

[0063] During packaging, when the forage seeds in the feed pipe 31 fall, the airflow blown out by the fan 41 enters the filter box 44 through the air duct 1 42, the feed pipe 31, and the air duct 2 43, and the air filtered by the filter bag 46 is ejected through the air duct 47 and the outlet pipe 48. The airflow in the feed pipe 31 can be used to dissipate heat when the seeds fall, and the airflow ejected from the outlet pipe 48 is used to dissipate heat for the seeds accumulated in the hopper 2, thereby improving the air permeability of the seeds and greatly reducing the probability of the seeds heating up and mildewing.

[0064] In this embodiment, a hanging frame 45 located outside the air duct 43 is fixed to the inner wall of the filter box 44 on one side close to the air duct 43, and the bag mouth of the filter bag 46 is hung on the hanging frame 45. The bag mouth of the filter bag 46 and the hanging frame 45 can be fastened with a rope or other tools. When the filter bag 46 needs to be cleaned, the filter box 44 can be opened to take out the filter bag 46 for cleaning.

[0065] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the present invention, which should be included in the scope of the claims of the present invention.

Claims

1. A quantitative packaging device for forage seeds, characterized in that: The invention comprises a packaging component and a conveying component. The packaging component comprises a chassis (1). A hopper (2) for containing grass seeds is fixed on the top of the chassis (1). A quantitative feeding mechanism (3) is provided inside the chassis (1) for quantitatively packaging the grass seeds. A return mechanism (5) is provided on one side of the chassis (1) to facilitate the return of seeds exceeding the weight into the hopper (2) for repackaging. The quantitative feeding mechanism (3) comprises a feeding tube (31) arranged inside the chassis (1), a feeding tube (32) is fixed at the top end of the feeding tube (31), and a weighing part (33) is fixed at the bottom end of the feeding tube (31); The weighing part (33) comprises a box body (331) and a baffle (336) fixed to the outside of the box body (331); the box body (331) and the baffle (336) are both arranged at the bottom end of the feeding tube (31); a movable block (332) is slidably arranged in the box body (331), and a protrusion is arranged at the bottom end of the movable block (332); at least one set of weighing mechanisms is arranged inside the box body (331) and outside the protrusion; when the weight of the forage seeds falling on the movable block (332) reaches a set weight value, the bottom of the feeding tube (31) opens to allow the forage seeds to fall and be packaged.

2. The forage seed quantitative packaging device according to claim 1, characterized in that: The weighing mechanism comprises a bottom plate (333) fixed inside the box body (331), a spring (335) and a weighing sensor (334) are fixed on the top of the bottom plate (333), the spring (335) and the weighing sensor (334) are both arranged at the bottom of the movable block (332), and the spring (335) is fixedly connected to the movable block (332).

3. The forage seed quantitative packaging device according to claim 2, characterized in that: The rear end of the baffle (336) extends out of the rear end of the chassis (1) and is slidably connected to the chassis (1); an electric push rod (337) for driving the baffle (336) to move is fixed to the rear end of the chassis (1); The bottom of both sides of the discharge pipe (31) is provided with a slideway (310), and the sides of the two slideways (310) away from the discharge pipe (31) are respectively fixed to the inner side walls of the chassis (1), and the two slideways (310) are respectively arranged on the outside of both sides of the baffle (336) for guiding the baffle (336).

4. The forage grass seed quantitative packaging device according to claim 3, characterized in that: A discharge hopper (34) is provided at the bottom of the box body (331), and the box body (331) is slidably connected to the discharge hopper (34), and two sides of the discharge hopper (34) are respectively fixed to two side walls inside the chassis (1), and a discharge port 1 (338) matching the raised portion of the movable block (332) is provided at the bottom of the box body (331), and a discharge port 2 (35) communicating with the discharge port 1 (338) is provided at the top of the discharge hopper (34); When the weight of the forage seeds falling onto the movable block (332) reaches the weight value set by the weighing sensor (334), the top end surface of the movable block (332) is flush with the bottom end surface of the discharge tube (31), and at the same time, the bottom end of the movable block (332) enters the discharge port 1 (338) and the bottom end surface of the movable block (332) is flush with the top end surface of the discharge hopper (34), and then the electric push rod (337) drives the box body (331), the movable block (332) and the baffle (336) to move backward and remove from the bottom of the discharge tube (31).

5. The forage seed quantitative packaging device according to claim 1, characterized in that: The material return mechanism (5) comprises an elevator (51) and a vacuum pump (52). The air inlet of the vacuum pump (52) is connected to the elevator (51) to facilitate the extraction of negative pressure in the elevator (51). The feed end of the elevator (51) is connected to one side of the discharge pipe (31) through a suction pipe (53). The suction pipe (53) passes through the top of the chassis (1), and one end of the suction pipe (53) close to the discharge pipe (31) extends into the discharge pipe (31). The discharge end of the elevator (51) is arranged at the top of the hopper (2), so as to facilitate the transportation of the forage seeds in the discharge pipe (31) that exceed the set weight into the hopper (2) for repackaging.

6. The forage seed quantitative packaging device according to claim 1, characterized in that: A rotating shaft (36) is rotatably mounted inside the chassis (1) at a position behind the discharge tube (31); a gear (37) and a cam (39) are fixed on the rotating shaft (36); the cam (39) is arranged at the rear side of the discharge tube (31); the gear (37) is located at one side of the discharge tube (31); a rack (38) is meshed at the bottom end of the gear (37); the rack (38) is fixed to the box body (331); and an opening (8) is provided at the rear side of the chassis (1) for the baffle (336) and the rack (38) to pass through.

7. The forage grass seed quantitative packaging device according to claim 1, characterized in that: The material hopper (2) and the material drop pipe (32) are connected via a pipeline, and an electric valve is fixed on the pipeline. A plurality of staggeredly distributed conical blocks (322) are fixed inside the material drop pipe (32) via a support rod (321), and the cross section of the support rod (321) is triangular.

8. The forage seed quantitative packaging device according to claim 5, characterized in that: The chassis (1) is provided with a heat dissipation mechanism (4), the heat dissipation mechanism (4) comprising a fan (41) and a filter box (44) respectively fixed on both sides of the chassis (1); an air duct (42) is fixed between the feed pipe (31) and a side wall of the chassis (1) close to the fan (41); an air duct (43) is fixed between the feed pipe (31) and a side wall of the chassis (1) close to the filter box (44); protective nets (49) are fixed at the pipe openings of the air duct (42) and the air duct (43) close to the feed pipe (31); when the forage seeds fall in the feed pipe (31), the air flow blown out by the fan (41) passes through the air duct (42), the feed pipe (31) and the air duct (43) and enters the filter box (44) for heat dissipation of the forage seeds.

9. The forage grass seed quantitative packaging device according to claim 8, characterized in that: The filter box (44) is provided with a filter bag (46), and a hanging frame (45) located outside the second air duct (43) is fixed to the inner wall of the filter box (44) on one side close to the second air duct (43), and the bag opening of the filter bag (46) is hung on the hanging frame (45), and the filter bag (46) is used to filter impurities in the airflow; An air duct (47) is fixed to the top of the filter box (44); an end of the air duct (47) away from the filter box (44) passes through one side of the hopper (2) and extends into the interior of the hopper (2); an air outlet pipe (48) with a one-way valve is fixed to a section of the air duct (47) located inside the hopper (2); the airflow after filtering impurities in the filter box (44) passes through the air duct (47) and the air outlet pipe (48) and enters the grass seeds in the hopper (2) to dissipate heat for the grass seeds; The lifting machine (51) and the vacuum pump (52) are both fixed to the top of the filter box (44), and the lifting machine (51) and the vacuum pump (52) are both arranged on the front side of the air duct (47), and the suction pipe (53) is arranged above the second air duct (43).

10. The forage seed quantitative packaging device according to claim 1, characterized in that: The bottom end of the chassis (1) is supported by a frame (6), and the conveying assembly comprises a conveyor (7) arranged at the bottom of the chassis (1), and the conveyor (7) is used to convey the forage seed packaging container.

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