Section control type airflow seed separating device
By designing a segmented control airflow seeding device, the problem that pneumatic seeders cannot achieve inter-row mixed seeding and high-precision variable ratio mixed seeding has been solved. This has enabled high-precision mixed seeding and uniform distribution of forage seeds, improving production efficiency and reducing costs.
Patent Information
- Application Number
- CN202410675105.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-23
- Publication Date
- 2025-12-05
AI Technical Summary
Existing pneumatic seeders cannot achieve inter-row mixed seeding and high-precision variable ratio mixed seeding, and cannot meet the diverse needs of mixed seeding of forage grasses, resulting in low labor productivity and high costs.
A segmented control airflow seed distribution device was designed, including components such as a central seed meterer, a venturi tube, a mixer, an exhaust cap, a distributor, and a corrugated pipe. The position of the baffle and seed baffle is controlled by a stepper motor to realize the automatic switching between row-mixed seeding and alternate-row mixed seeding. The uniform mixing and distribution of the seed flow is achieved by changing the inner diameter of the corrugated pipe.
It has enabled high-precision variable ratio mixing of forage seeds, reduced mixing ratio errors, improved labor productivity, saved production costs, and provided farmers and herdsmen with better conditions for agricultural time management.
Smart Images
Figure CN121058413A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The application belongs to the field of agricultural machinery application, and particularly relates to a distribution device capable of realizing pasture seed mixed sowing and section control. BACKGROUND
[0002] The pasture seed mixed sowing can be divided into same-row mixed sowing and alternate-row mixed sowing, the same-row mixed sowing is to sow pasture seeds of different forms in the same kind of ditch, and the alternate-row mixed sowing is to sow pasture seeds of different forms in different ditches. In the existing technology, the pneumatic sowing machine suitable for the same-row mixed sowing cannot complete the alternate-row mixed sowing requirement, and cannot achieve high-precision variable ratio mixed sowing for the same-row mixed sowing. Therefore, aiming at the problems existing in the above pasture mixed sowing operation, a section control type airflow seed distribution device based on the pneumatic sowing machine is developed, which can realize automatic switching of the same-row mixed sowing and the alternate-row mixed sowing, automatic adjustment of the mixed sowing ratio, reduction of the mixed sowing ratio error, improvement of the labor productivity, creation of conditions for farmers to seize good agricultural time, and saving of production cost. SUMMARY
[0003] The application aims to provide a section control type airflow seed distribution device based on a pneumatic sowing machine, which can realize variable ratio mixed sowing of pasture seeds of different forms.
[0004] The application aims to realize the above-mentioned purpose through the following technical scheme.
[0005] The section control type airflow seed distribution device is mainly composed of a central seed metering device, a Venturi tube, a connecting pipe, a mixer, an exhaust cap, a distributor, a corrugated pipe and a connecting elbow. The Venturi tube is located below and behind the central seed metering device and is connected with the central seed metering device through a fastener. The mixer is located behind the Venturi tube, has two air inlets and two air outlets, and the two air inlets are connected with the two Venturi tubes through the connecting pipes. The connecting elbow is located behind the mixer, and the two air outlets of the mixer are connected with the two connecting elbows through the connecting pipes. The corrugated pipe is located above the connecting elbow and is connected with the connecting elbow through a fastener. The distributor is located above the corrugated pipe and is connected with the corrugated pipe through a fastener. The exhaust cap is located above the distributor and is connected with the distributor through a fastener.
[0006] The section control type airflow seed distribution device is mainly composed of a central seed metering device, a Venturi tube, a connecting pipe, a mixer, an exhaust cap, a distributor, a corrugated pipe and a connecting elbow. The Venturi tube is located below and behind the central seed metering device and is connected with the central seed metering device through a fastener. The mixer is located behind the Venturi tube, has two air inlets and two air outlets, and the two air inlets are connected with the two Venturi tubes through the connecting pipes. The connecting elbow is located behind the mixer, and the two air outlets of the mixer are connected with the two connecting elbows through the connecting pipes. The corrugated pipe is located above the connecting elbow and is connected with the connecting elbow through a fastener. The distributor is located above the corrugated pipe and is connected with the corrugated pipe through a fastener. The exhaust cap is located above the distributor and is connected with the distributor through a fastener.
[0007] The air flow seed sorting device of the above-mentioned type, wherein the air exhaust cap comprises nut I, nut II, air baffle, air outlet cap, gauze, screw rod, bearing; the nut I and the nut II are matched with the screw rod, wherein the nut I is above the air baffle, the nut II is fixed below the air outlet cap, the air outlet cap is inside the air baffle and coaxial with the air baffle, the bearing is fixed at one end of the screw rod and in contact with the gauze, and the outer circle of the gauze is extruded and fixed on the upper cover plate through the air outlet cap; the size of the air outlet can be controlled by adjusting the position relationship of the air baffle and the air outlet cap, and the excess air can be discharged.
[0008] The air flow seed sorting device of the above-mentioned type, wherein the distributor comprises upper cover plate, electric push rod, seed blocking plate, seed outlet connecting pipe, bottom plate, corrugated connecting pipe, horn mouth, seed blocking plate rotating shaft, sliding block, sliding rod; the electric push rod is fixed above the upper cover plate, the upper cover plate is fixed above the seed outlet connecting pipe, the bottom plate is fixed below the seed outlet connecting pipe, the corrugated connecting pipe is inside the horn mouth and coaxial with the horn mouth, the corrugated connecting pipe is fixed below the bottom plate, the upper end of the horn mouth is fixed with the outer circle of the bottom plate, the seed blocking plate is inside the seed outlet connecting pipe and fixed with the seed blocking plate rotating shaft, the seed blocking plate rotating shaft penetrates the round hole on the seed outlet connecting pipe, the sliding rod is fixed on the seed blocking plate rotating shaft, one end of the sliding block slides on the sliding rod, and the other end is hinged with the electric push rod; when the electric push rod is extended or retracted, the seed blocking plate is rotated through the sliding block, the sliding rod and the seed blocking plate rotating shaft, so as to realize the closure of a single seed outlet and achieve the controllable function of sowing.
[0009] The air flow seed sorting device of the above-mentioned type, wherein the inner diameter of the corrugated pipe changes according to a certain rule from one end to the other end, and the two ends are small and the middle is large. BRIEF DESCRIPTION OF DRAWINGS
[0010] Figure 1 It is a general structure diagram of the present application;
[0011] Figure 2 It is a mixer diagram of the present application;
[0012] Figure 3 It is an air exhaust cap diagram of the present application;
[0013] Figure 4 It is a distributor diagram of the present application;
[0014] Figure 5 It is a seed outlet connecting pipe diagram of the present application;
[0015] Figure 6 It is a bottom plate diagram of the present application;
[0016] Figure 7 It is a corrugated pipe diagram of the present application.
[0017] In the attached diagram, 1 is the central seed metering device, 2 is the venturi tube, 3 is the connecting pipe, 4 is the mixer, 5 is the exhaust cap, 6 is the distributor, 7 is the bellows, 8 is the connecting elbow, 4-1 is the inlet connecting pipe, 4-2 is the adjusting bolt, 4-3 is the baffle shaft I, 4-4 is the housing, 4-5 is the baffle, 4-6 is the baffle shaft II, 4-7 is the stepper motor, 4-8 is the outlet connecting pipe, and 4-9 is the baffle positioning block. 5-1 is Nut I, 5-2 is Nut II, 5-3 is Windproof Cap, 5-4 is Air Outlet Cap, 5-5 is Mesh, 5-6 is Screw, 5-7 is Bearing, 6-1 is Top Cover Plate, 6-2 is Electric Push Rod, 6-3 is Seed Baffle Plate, 6-4 is Seed Outlet Connecting Pipe, 6-5 is Base Plate, 6-6 is Corrugated Connecting Pipe, 6-7 is Trumpet Mouth, 6-8 is Seed Baffle Plate Rotating Shaft, 6-9 is Sliding Block, 6-10 is Sliding Rod. Detailed implementation method:
[0018] The invention will be further described with reference to the accompanying drawings:
[0019] like Figure 1 As shown, a segmented controlled airflow seeding device mainly consists of a central seed metering device (1), a venturi tube (2), a connecting pipe (3), a mixer (4), an exhaust cap (5), a distributor (6), a corrugated pipe (7), and a connecting elbow (8). The central seed metering device (1) is installed below the seed box of the pneumatic seeder to uniformly and quantitatively discharge the seeds in the seed box. The venturi tube (2) is fixed below and behind the central seed metering device (1) and has an inlet, an outlet, and a feed inlet. A high-pressure airflow generated by a fan enters the inlet of the venturi tube (2), and a negative pressure is generated at the feed inlet. Through the negative pressure, the seeds discharged by the central seed metering device (1) are sucked into the venturi tube (2), completing the gas-solid separation process. The mixture is transported to the mixer (4) through the outlet. The mixer (4) has two air inlets and two air outlets. The two air inlets are connected to two Venturi tubes (2) through connecting pipes (3), and the two air outlets are connected to two connecting elbows (8) through connecting pipes (3). The corrugated pipe (7) is fixed above the connecting elbows (8), the distributor (6) is fixed above the corrugated pipe (7), and the exhaust cap (5) is fixed above the distributor (6). Different forms of forage seeds enter the mixer (4) and are transported through the connecting elbows (3) and the corrugated pipes (7). After the forage seeds are distributed in the distributor (6), they are transported to the seed furrow through the seed delivery pipe to complete the sowing operation.
[0020] Figure 2The schematic diagram of the mixer (4) of the application comprises an inlet connecting pipe (4-1), an adjusting bolt (4-2), a baffle rotating shaft I (4-3), a shell (4-4), a baffle (4-5), a baffle rotating shaft II (4-6), a stepping motor (4-7), an outlet connecting pipe (4-8), and a baffle positioning block (4-9). The inlet connecting pipe (4-1) has two, which are respectively fixed at the left front and right front of the shell (4-4). The outlet connecting pipe (4-8) has two, which are respectively fixed at the left rear and right rear. The stepping motor (4-7) is fixed at the rear of the shell (4-4). The rotor of the stepping motor (4-7) is connected with the baffle rotating shaft II (4-6). The baffle rotating shaft I (4-3) is fixed at the two ends of the baffle rotating shaft II (4-6). The adjusting bolt (4-2) is located at the front end of the baffle rotating shaft I (4-3). The baffle positioning block (4-9) has four, which are fixed inside and are distributed in the horizontal and vertical directions. The stepping motor (4-7) drives the baffle rotating shaft II (4-6), the baffle (4-5), and the baffle rotating shaft I (4-3) to rotate in the shell (4-4). When rotated to position II, the baffle (4-5) divides the inner cavity of the shell (4-4) into two isolated spaces IV and VII. At this time, the inlet III, the inner cavity IV, and the outlet V constitute a connected space. Similarly, the inlet VI, the inner cavity VII, and the outlet VIII constitute another connected space. The seed flow entering the inlet III is not mixed with the seed flow entering the inlet VI. When the baffle (4-5) is rotated to position I, the inlet III, the inner cavity IV, the outlet V, the inlet VI, the inner cavity VII, and the outlet VIII are connected with each other. At this time, the seed flow entering the inlet III is mixed with the seed flow entering the inlet VI. Therefore, when the same row mixed sowing operation is needed, the baffle (4-5) is located at position I by controlling the stepping motor (4-7). When the alternate row mixed sowing operation is needed, the baffle (4-5) is located at position II by controlling the stepping motor (4-7), and the alternate row mixed sowing operation is completed by cooperating with the distributor.
[0021] Figure 3The application discloses a schematic diagram of an air exhaust cap (5), which comprises nut I (5-1), nut II (5-2), a wind shield (5-3), an air outlet cap (5-4), a screen (5-5), a screw rod (5-6) and a bearing (5-7). The nut I (5-1) and the nut II (5-2) are matched with the screw rod (5-6), wherein the nut I (5-1) is located above the wind shield (5-3) and is used for locking the adjusted wind shield (5-3) to prevent the wind shield (5-3) from rotating due to mechanical vibration; the nut II (5-2) is fixed below the air outlet cap (5-4) and supports the screen (5-5) by rotating the screw rod (5-6); the air outlet cap (5-4) is located inside the wind shield (5-3) and is coaxial with the wind shield (5-3); the size of the air outlet can be controlled by adjusting the position relationship between the wind shield (5-3) and the air outlet cap (5-4) to discharge redundant air; the bearing (5-7) is fixed at one end of the screw rod (5-6) and is in contact with the screen (5-5) to prevent the screen (5-5) from being damaged when the screw rod (5-6) rotates; the outer circle of the screen (5-5) is extruded and fixed on the upper cover plate (6-1) through the air outlet cap (5-4); and the screen (5-5) forms a conical structure due to the support of the screw rod (5-6) and can effectively block the passage of grass seeds.
[0022] As Figure 4 , Figure 5 and Figure 6The diagram shows a schematic of the distributor (6) of the present invention. The distributor (6) includes an upper cover plate (6-1), an electric push rod (6-2), a seed baffle plate (6-3), a seed outlet connecting pipe (6-4), a bottom plate (6-5), a corrugated connecting pipe (6-6), a flared mouth (6-7), a seed baffle plate rotating shaft (6-8), a slider (6-9), and a sliding rod (6-10). The electric push rod (6-2) is fixed above the upper cover plate (6-1), the upper cover plate (6-1) is fixed above the seed outlet connecting pipe (6-4), the bottom plate (6-5) is fixed below the seed outlet connecting pipe (6-4), the corrugated connecting pipe (6-6) is located inside the flared mouth (6-7) and is coaxial with the flared mouth (6-7), and the corrugated connecting pipe (6-6) is fixed below the bottom plate (6-5). 7) The upper end is fixed to the outer circle of the base plate (6-5). The seed baffle (6-3) is located inside the seed outlet connecting pipe (6-4) and fixed to the seed baffle shaft (6-8). The seed baffle shaft (6-8) passes through the round hole on the seed outlet connecting pipe (6-4). The slide rod (6-10) is fixed on the seed baffle shaft (6-8). One end of the slider (6-9) slides on the slide rod (6-10), and the other end is hinged to the electric push rod (6-2). When the electric push rod (6-2) extends or retracts, the slider (6-9) pulls the slide rod (6-10) to make a circular motion. The slide rod (6-10) drives the seed baffle shaft (6-8) and the seed baffle (6-3) to rotate, thereby realizing the closure of a single seed outlet. The controller controls the extension and retraction of all electric push rods (6-2) to realize the function of controllable sowing.
[0023] like Figure 7 As shown in the schematic diagram of the corrugated pipe (7) of the present invention, the inner diameter of the corrugated pipe (7) changes from one end to the other according to a certain rule, with the two ends being small and the middle being large, which can make the seed flow mix evenly in the corrugated pipe (7) to achieve the purpose of uniform seeding.
Claims
1. A segmented control airflow seeding device, mainly composed of a central seed metering device (1), a venturi tube (2), a connecting pipe (3), a mixer (4), an exhaust cap (5), a distributor (6), a bellows (7), and a connecting elbow (8); the venturi tube (2) is located below and behind the central seed metering device (1) and is connected to the central seed metering device (1) by fasteners; the mixer (4) is located behind the venturi tube (2), and the mixer (4) has two air inlets and two air outlets, the two air inlets being connected to the central seed metering device (1) by fasteners. The connecting pipe (3) is connected to two venturi pipes (2); the connecting elbow (8) is located behind the mixer (4), and the two air outlets of the mixer (4) are connected to the two connecting elbows (8) through the connecting pipe (3); the corrugated pipe (7) is located above the connecting elbow (8) and is connected to the connecting elbow (8) through fasteners; the distributor (6) is located above the corrugated pipe (7) and is connected to the corrugated pipe (7) through fasteners; the exhaust cap (5) is located above the distributor (6) and is connected to the distributor (6) through fasteners.
2. The segmented control airflow sorting device according to claim 1, characterized in that: The mixer (4) includes an inlet connecting pipe (4-1), an adjusting bolt (4-2), a baffle shaft I (4-3), a housing (4-4), a baffle (4-5), a baffle shaft II (4-6), a stepper motor (4-7), an outlet connecting pipe (4-8), and a baffle positioning block (4-9). There are two inlet connecting pipes (4-1), which are fixed to the front left and front right of the housing (4-4) respectively. There are two outlet connecting pipes (4-8), which are fixed to the rear left and rear right of the housing (4-4) respectively. The stepper motor (4-7) is fixed to the rear of the housing (4-4). The rotor of the stepper motor (4-7) is connected to the baffle shaft II (4-6), and the baffle is fixed to both ends of the housing. The adjusting bolt (4-2) is located at the front end of the baffle shaft I (4-3). There are four baffle positioning blocks (4-9), which are fixed inside and evenly distributed in the horizontal and vertical directions.
3. The segmented control airflow sorting device according to claim 1, characterized in that: The exhaust cap (5) includes nut I (5-1), nut II (5-2), windproof cap (5-3), air outlet cap (5-4), mesh screen (5-5), screw (5-6), and bearing (5-7). Nut I (5-1) and nut II (5-2) are fitted onto the screw (5-6). Nut I (5-1) is located above the windproof cap (5-3), and nut II (5-2) is fixed below the air outlet cap (5-4). The air outlet cap (5-4) is located inside the windproof cap (5-3) and is coaxial with the windproof cap (5-3). The bearing (5-7) is fixed to one end of the screw (5-6) and contacts the mesh screen (5-5). The outer circle of the mesh screen (5-5) is pressed and fixed onto the upper cover plate (6-1) by the air outlet cap (5-4). The size of the air outlet can be controlled by adjusting the positional relationship between the windproof cap (5-3) and the air outlet cap (5-4) to dissipate excess air.
4. The segmented control airflow sorting device according to claim 1, characterized in that: The dispenser (6) includes an upper cover plate (6-1), an electric push rod (6-2), a seed baffle plate (6-3), a seed outlet connecting pipe (6-4), a bottom plate (6-5), a corrugated connecting pipe (6-6), a flared mouth (6-7), a seed baffle plate rotating shaft (6-8), a slider (6-9), and a sliding rod (6-10). The electric push rod (6-2) is fixed above the upper cover plate (6-1), the upper cover plate (6-1) is fixed above the seed outlet connecting pipe (6-4), the bottom plate (6-5) is fixed below the seed outlet connecting pipe (6-4), the corrugated connecting pipe (6-6) is located inside the flared mouth (6-7) and is coaxial with the flared mouth (6-7), and the corrugated connecting pipe (6-6) is fixed to the bottom plate (6-5). Below, the upper end of the flared mouth (6-7) is fixed to the outer circle of the base plate (6-5). The seed baffle (6-3) is located inside the seed outlet connecting pipe (6-4) and is fixed to the seed baffle rotating shaft (6-8). The seed baffle rotating shaft (6-8) passes through the round hole on the seed outlet connecting pipe (6-4). The sliding rod (6-10) is fixed on the seed baffle rotating shaft (6-8). One end of the slider (6-9) slides on the sliding rod (6-10), and the other end is hinged to the electric push rod (6-2). When the electric push rod (6-2) extends or retracts, the seed baffle (6-3) is driven to rotate through the slider (6-9), the sliding rod (6-10), and the seed baffle rotating shaft (6-8), thereby realizing the closure of a single seed outlet and achieving the function of controllable sowing.
5. The segmented control airflow sorting device according to claim 1, characterized in that: The inner diameter of the corrugated pipe (7) varies from one end to the other according to a certain pattern, with the two ends being smaller and the middle being larger.