Intelligent rice seed spreading device for rice planting

Abstract

The present application relates to the field of rice planting, and more particularly to a kind of rice seed intelligent sowing device for rice planting, including box, the left side of box is equipped with two shoulder straps, for carrying the device on the chest of operator and operating;The right side of box is equipped with storage hopper and tee guide tube, tee guide tube is communicated with storage hopper;Box is equipped with double cylinder pump air cylinder, double cylinder pump air cylinder is communicated with tee guide tube by air outlet pipe, for blowing rice seed by pneumatic way;The right side port of tee guide tube is equipped with discharge port swing guide assembly.The present application is by two piston rods in double cylinder pump air cylinder staggered reciprocation, cooperate two one-way valves alternate opening and closing, continuous and stable tee guide tube is supplied with air, rice seed is continuously sprayed, avoid the uneven sowing caused by intermittent air pressure;And two piston rods work alternately, and the pumping efficiency is high, guarantee the sowing uniformity and continuity.

Description

Technical Field

[0001] This invention relates to the field of rice cultivation, and more particularly to an intelligent rice seed broadcasting device for rice cultivation. Background Technology

[0002] As one of the world's major food crops, the level of mechanization in rice sowing directly affects planting efficiency and seedling quality. In recent years, with the development of intelligent agriculture, direct seeding technology has gradually replaced traditional seedling raising and transplanting, while precise, uniform, and low-damage rice seed broadcasting devices have become a key technological bottleneck. Especially in the cultivation of high-value varieties such as hybrid rice and high-quality fragrant rice, the high cost and fragile seed coats make them extremely sensitive to mechanical damage during sowing, necessitating an intelligent broadcasting solution that can ensure both precise seeding rate and effective protection of seed integrity.

[0003] Currently, most mainstream rice direct seeding machines use high-speed rotating centrifugal discs for broadcasting. The principle is that a motor drives the broadcasting disc to rotate at high speed, using centrifugal force to throw the seeds out. While this method is simple in structure and highly efficient, it has significant drawbacks: seeds repeatedly collide and rub against the inner wall of the centrifugal disc, and experience significant impact force at the moment of high-speed ejection, easily causing seed coat rupture, embryo damage, or internal micro-cracks, leading to a 5%–15% decrease in germination rate. This is especially severe for high-quality rice seeds with slender grains and thin husks. Furthermore, centrifugal broadcasting is greatly affected by seed mobility; in high humidity or when the seed surface is slightly damp, adhesion and blockage can easily occur, making it difficult to guarantee uniform seeding. To reduce seed damage, some studies have attempted to introduce pneumatic seeding technology, such as Venturi tube suction or positive pressure blowing systems. However, existing pneumatic devices generally suffer from unstable airflow, high energy consumption, and complex structures. Using compressed air tanks is costly and unsuitable for long-term field operations. More importantly, most pneumatic designs have not been optimized for rice seed density, particle size and vulnerability characteristics, and still cannot meet the three core requirements of low damage, high uniformity and field adaptability.

[0004] Therefore, developing an intelligent rice seed broadcasting device based on the principle of pneumatic conveying, capable of continuous and stable air supply, uniform sowing, and intelligent anti-clogging function, is of great significance for improving the mechanization and intelligence level of rice cultivation. Summary of the Invention

[0005] In order to overcome the shortcomings of existing rice seeding devices that cannot simultaneously achieve low damage, continuous and stable air supply, and large-area uniform sowing, the purpose of this invention is to provide an intelligent rice seed sowing device for rice cultivation.

[0006] A smart rice seed broadcasting device for rice cultivation includes a box body with two shoulder straps on the left side for carrying the device on the operator's chest. The right side of the box body has a storage hopper and a three-way feed pipe connected to the storage hopper. Inside the box body is a double-cylinder air pump connected to the three-way feed pipe via an air outlet for pneumatically blowing out the rice seeds. At the right end of the three-way feed pipe is a swaying guide assembly with a square discharge window that can swing back and forth, allowing the blown-out rice seeds to be broadcast repeatedly. Below the square discharge window is a spreading plate that can shake up and down to spread the rice seeds further. The box body also has a smart anti-clogging guide assembly for real-time monitoring of the rice seed delivery status and automatic clearing when blockage occurs.

[0007] Furthermore, the three-way feed pipe is fixedly connected to the inside of the right wall of the box. The three-way feed pipe is located directly below the storage hopper, and the three-way feed pipe is connected to the inside of the storage hopper through its top port to receive rice seeds from the storage hopper.

[0008] Furthermore, the dual-cylinder pump cylinder is located inside the housing. The dual-cylinder pump cylinder has two symmetrically distributed air chambers. Each air chamber is vertically slidably connected to a piston rod. The top of each piston rod is equipped with a cylindrical piston head. The cylindrical piston head is sealed to the inner wall of the corresponding air chamber of the dual-cylinder pump cylinder, which is used to separate each air chamber into the main pump air chamber located above and the bottom balance chamber located below. The two main pump air chambers of the dual-cylinder pump cylinder are connected to each other through an air outlet pipe. The other end of the air outlet pipe is connected to the lower left port of the three-way guide pipe.

[0009] Furthermore, each air outlet pipe is equipped with a first one-way valve at the connection point near each main pump air chamber to control the compressed air in each main pump air chamber to flow only unidirectionally to the air outlet pipe; the top wall of the dual-cylinder pump cylinder is provided with a first air inlet corresponding to each air chamber, and each first air inlet is provided with a second one-way valve to control the external air to flow only unidirectionally into each main pump air chamber; the bottom wall of the dual-cylinder pump cylinder is provided with a second air inlet corresponding to each air chamber, and each second air inlet is used to connect each bottom balance chamber with the outside atmosphere to achieve air pressure balance in each bottom balance chamber during piston movement.

[0010] Furthermore, the housing is equipped with a manual reciprocating air pump drive assembly, which includes a crank handle, two drive gears, and two eccentric transmission gears. The crank handle is rotatably connected to the lower right side of the housing, and two drive gears are fixedly connected to the middle of the crank handle. The lower part of the double-cylinder air pump cylinder is rotatably connected to two symmetrically distributed eccentric transmission gears. Each eccentric transmission gear meshes with the adjacent drive gear to form a gear transmission system. The lower eccentric part of the front eccentric transmission gear has a protrusion, and the upper eccentric part of the rear eccentric transmission gear has a protrusion. The lower part of each piston rod has a sliding groove, and each protrusion is embedded in the sliding groove of the corresponding piston rod to convert the rotational motion of the eccentric transmission gears into the up-and-down reciprocating linear motion of the piston rod. In the initial state, the front piston rod is in a low position, and the rear piston rod is in a high position to achieve the staggered reciprocating motion of the two piston rods.

[0011] Furthermore, the square discharge window is formed by two fixed plates spaced vertically and two rotating plates symmetrically distributed front and back. The two fixed plates are fixedly connected to the right side of the box and located near the right end of the three-way guide pipe. The two rotating plates are rotatably connected between the two fixed plates. Each rotating plate has a swing arm at its top, and a connecting rod is rotatably connected between the two swing arms to realize the linkage between the two rotating plates. The discharge port swing guide assembly also includes two sliding rods symmetrically distributed front and back. Each sliding rod is slidably connected to the right wall of the box. Each rotating plate has a through-type mounting hole on the right side of the opposite side. Each sliding rod is inserted into the corresponding hole to transmit the sliding motion of the sliding rod to the corresponding rotating plate. Each eccentric transmission gear has a uniformly distributed protrusion along the circumference on the opposite side. Each protrusion is trapezoidal, and the protrusion on the rear eccentric transmission gear is staggered from the protrusion on the front eccentric transmission gear to alternately push the front and rear sliding rods so that the square discharge window continuously swings back and forth.

[0012] Furthermore, a fixing block is fixedly connected to the right side of the box near the fixing plate. The fixing block is located below the square discharge window, and the spreading plate is rotatably connected to the right side of the fixing block. The spreading plate is connected to the right wall of the box by two springs to achieve the elastic reset of the spreading plate. Each eccentric transmission gear has a uniformly distributed trigger post along the circumference on the side that is close to each other. The spreading plate has two L-shaped levers symmetrically distributed front and back. The two L-shaped levers extend from the right wall of the box into the area between the two eccentric transmission gears. They are used to alternately press the L-shaped levers when the trigger post rotates, and with the elastic reset of the spring, make the spreading plate continuously shake up and down.

[0013] Furthermore, the intelligent anti-blocking flow guiding component includes a motor installed on the upper right side of the housing, a flexible anti-blocking lever connected to the motor output shaft via a coupling, and a flow sensor installed on the inner wall of the three-way guide tube. The flexible anti-blocking lever extends into the three-way guide tube and is used to rotate and agitate inside the three-way guide tube to guide the flow of rice seeds. The flow sensor is electrically connected to the motor via a control module and is used to detect the flow signal of rice seeds in the three-way guide tube in real time. When an abnormal flow is detected, the control module controls the motor to start and drives the flexible anti-blocking lever to rotate for guidance.

[0014] The beneficial effects of this invention are as follows: By using the alternating reciprocating motion of two piston rods inside the double-cylinder pump cylinder, combined with the alternating opening and closing of the first and second one-way valves, high-pressure gas can be continuously and stably delivered into the three-way feed pipe, allowing rice seeds to be continuously sprayed out under the airflow, thus avoiding the problem of uneven sowing caused by intermittent air pressure in traditional sowing devices; at the same time, the alternating operation of the two piston rods results in high pumping efficiency, ensuring the uniformity and continuity of rice seed sowing.

[0015] This invention utilizes a swaying guide assembly at the discharge port. The rotation of an eccentric transmission gear drives trapezoidal protrusions to alternately push sliding rods on the front and rear sides, causing the square discharge window to continuously oscillate back and forth. This allows the sprayed rice seeds to be evenly spread over a large area in the front-to-back direction. Simultaneously, a spreading plate driven by a spring and a trigger post is installed below the square discharge window. This causes the spreading plate to continuously vibrate up and down, scattering the rice seeds further, significantly increasing the spreading width and improving the spreading coverage area.

[0016] This invention uses a flow sensor installed on the inner wall of a three-way feed tube to monitor the flow rate of rice seeds in real time. When a slowdown in flow is detected (such as a tendency to blockage), the control module automatically starts the motor to drive the flexible anti-blockage lever to rotate at low speed, gently guiding the rice seeds in the three-way feed tube so that the seeds can pass through smoothly and be discharged normally. The anti-blockage operation can be completed automatically without manual intervention, effectively avoiding operation interruptions caused by blockage, significantly improving the continuity and reliability of sowing operations, and reducing manual maintenance costs. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0018] Figure 2 This is a three-dimensional structural cross-sectional view of the present invention.

[0019] Figure 3 This is a three-dimensional structural diagram of the components of the present invention, including the dual-cylinder pump cylinder, the first one-way valve, and the crank handle.

[0020] Figure 4 This is a three-dimensional structural diagram of the piston rod, the first one-way valve, and the second one-way valve of the present invention.

[0021] Figure 5 This is a three-dimensional structural diagram of the components such as the protrusion, fixing plate, and rotating plate of the present invention.

[0022] Figure 6 This is a three-dimensional structural diagram of the sliding rod, swing arm, and connecting rod components of the present invention.

[0023] Figure 7 This is a three-dimensional structural diagram of the components of the present invention, including the fixing block, the spreading plate, and the eccentric transmission gear.

[0024] Figure 8 This is a three-dimensional structural diagram of the components of the present invention, including the trigger column, the material spreading plate, and the spring.

[0025] Figure 9 This is a three-dimensional structural diagram of the components of the present invention, including the motor, flexible anti-blocking lever, and flow sensor.

[0026] Explanation of reference numerals in the attached drawings: 101_box body, 102_double-cylinder pump cylinder, 103_storage hopper, 104_air outlet pipe, 105_first one-way valve, 1051_second one-way valve, 106_piston rod, 107_eccentric transmission gear, 108_handle, 109_drive gear, 110_three-way guide pipe, 201_protrusion, 202_fixed plate, 203_rotating plate, 204_swing arm, 205_connecting rod, 206_sliding rod, 301_fixed block, 302_dispensing plate, 303_spring, 304_touch post, 401_motor, 402_flexible anti-clogging lever, 403_flow sensor. Detailed Implementation

[0027] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0028] Example 1: A smart rice seed broadcasting device for rice cultivation, such as... Figures 1-5 As shown, the device includes a housing 101. Two shoulder straps are located on the left side of the housing 101 for carrying the device on the operator's chest. A storage hopper 103 is fixedly connected to the right side of the housing 101 for storing rice seeds to be sown. A three-way feed pipe 110 is fixedly connected to the inside of the right wall of the housing 101. The three-way feed pipe 110 is located directly below the storage hopper 103, and its top port connects to the interior of the storage hopper 103 to receive rice seeds from the storage hopper 103.

[0029] The housing 101 houses a dual-cylinder pump cylinder 102. The dual-cylinder pump cylinder 102 contains two symmetrically distributed air chambers, each with a piston rod 106 vertically slidably connected within it. Each piston rod 106 has a cylindrical piston head at its top, which seals against the inner wall of the corresponding air chamber in the dual-cylinder pump cylinder 102, thus dividing the air chambers into an upper main pump chamber and a lower bottom balance chamber.

[0030] The two main pump chambers of the dual-cylinder pump cylinder 102 are connected by an air outlet pipe 104. The other end of the air outlet pipe 104 is connected to the lower left port of the three-way guide pipe 110. That is, the two main pump chambers of the dual-cylinder pump cylinder 102 are connected to the three-way guide pipe 110 through the air outlet pipe 104, which is used to deliver compressed air into the three-way guide pipe 110 to blow rice seeds.

[0031] Each air outlet pipe 104 is equipped with a first one-way valve 105 near the connection point of each main pump air chamber, used to control that the compressed air in each main pump air chamber can only flow unidirectionally to the air outlet pipe 104. The top wall of the dual-cylinder pump cylinder 102 has a first air inlet corresponding to each air chamber, and each first air inlet is equipped with a second one-way valve 1051, used to control that external air can only flow unidirectionally into each main pump air chamber. The bottom wall of the dual-cylinder pump cylinder 102 has a second air inlet corresponding to each air chamber, each second air inlet connecting each bottom balance chamber to the outside atmosphere, so as to achieve air pressure balance in each bottom balance chamber during piston movement.

[0032] The housing 101 is equipped with a manual reciprocating air pump drive assembly for controlling the up-and-down reciprocating movement of each piston rod 106. The manual reciprocating air pump drive assembly includes a crank handle 108, which is rotatably connected to the lower right side of the housing 101 for manual rotation by the operator. Two drive gears 109 are fixedly connected to the middle of the crank handle 108 for transmitting rotational power.

[0033] The lower part of the twin-cylinder pump cylinder 102 is rotatably connected to two symmetrically distributed eccentric transmission gears 107. Each eccentric transmission gear 107 meshes with the adjacent drive gear 109, forming a gear transmission system. The lower eccentric part of the front eccentric transmission gear 107 has a protrusion, and the upper eccentric part of the rear eccentric transmission gear 107 also has a protrusion. Each piston rod 106 has a groove at its lower part, and each protrusion is fitted into the corresponding groove of the piston rod 106, converting the rotational motion of the eccentric transmission gear 107 into the reciprocating linear motion of the piston rod 106. Initially, the front piston rod 106 is in a low position, and the rear piston rod 106 is in a high position, achieving the staggered reciprocating motion of the two piston rods 106.

[0034] like Figure 5 and Figure 6As shown, on the right side of the housing 101, near the right end of the three-way feed pipe 110, two fixed plates 202 are fixedly connected at an interval. Two rotating plates 203, symmetrically distributed front and back, are rotatably connected between the two fixed plates 202. Each rotating plate 203 has a swing arm 204 at its top, and a connecting rod 205 is rotatably connected between the two swing arms 204 to achieve linkage between the two rotating plates 203. The two fixed plates 202 and the two rotating plates 203 together form a square discharge window for spraying rice seeds and constraining the sowing direction.

[0035] To ensure the rice seeds sprayed from the three-way feed pipe 110 are evenly spread over a wide area, a discharge port swing guide assembly is provided between the two rotating plates 203 to make the two rotating plates 203 swing back and forth synchronously. The discharge port swing guide assembly includes two sliding rods 206 symmetrically distributed front and back, each sliding rod 206 being slidably connected to the right wall of the housing 101. Each rotating plate 203 has a through-hole on the right side of its opposite side, and each sliding rod 206 is inserted into the corresponding hole to transmit the sliding movement of the sliding rod 206 to the corresponding rotating plate 203.

[0036] Each eccentric transmission gear 107 has evenly distributed protrusions 201 along its circumference on its opposite side, and each protrusion 201 is trapezoidal. The protrusions 201 on the rear eccentric transmission gear 107 are staggered from those on the front eccentric transmission gear 107, and are used to alternately push the sliding rods 206 on the front and rear sides, so that the square discharge window can continuously swing back and forth in the front and rear directions.

[0037] like Figure 7 and Figure 8 As shown, a fixing block 301 is fixedly connected to the right side of the housing 101 near the fixing plate 202. The fixing block 301 is located below the square discharge window. A material spreading plate 302 is rotatably connected to the right side of the fixing block 301. The material spreading plate 302 is connected to the right wall of the housing 101 by two springs 303, which are used to achieve the elastic reset of the material spreading plate 302.

[0038] Each eccentric transmission gear 107 has evenly distributed actuating posts 304 along its circumference on the side closest to each other. The spreading plate 302 has two L-shaped levers symmetrically distributed front and back. The two L-shaped levers extend from the right wall of the housing 101 into the area between the two eccentric transmission gears 107. They are used to alternately press the L-shaped levers when the actuating posts 304 rotate. With the elastic reset of the spring 303, the spreading plate 302 continuously vibrates up and down.

[0039] The housing 101 is equipped with an intelligent anti-clogging flow guiding component, used to monitor the flow rate of rice seeds in the three-way feed pipe 110 in real time and prevent rice seeds from clogging. For example... Figure 9As shown, the intelligent anti-blocking and diversion assembly includes a motor 401 installed on the upper right side of the housing 101. The output shaft of the motor 401 is fixedly connected to a flexible anti-blocking lever 402 via a coupling. The flexible anti-blocking lever 402 passes through the outlet of the storage hopper 103 and extends into the three-way guide pipe 110, and is used to rotate and move inside the three-way guide pipe 110 to guide the flow of rice seeds.

[0040] A flow sensor 403 is installed on the inner wall of the three-way feed pipe 110. The flow sensor 403 is electrically connected to the motor 401 through the control module. It is used to detect the flow signal of rice seeds in the three-way feed pipe 110 in real time. When an abnormal flow is detected, the control module controls the motor 401 to start and drive the flexible anti-blocking lever 402 to rotate for drainage.

[0041] Working principle: After rice seeds are put into the storage hopper 103, the seeds fall into the three-way guide pipe 110 through the outlet of the storage hopper 103. The operator carries the device on his chest with a shoulder strap and walks in the paddy field to be sown while continuously rotating the crank handle 108 by hand.

[0042] When the crank handle 108 is rotated, the drive gear 109 drives the two eccentric transmission gears 107 to rotate synchronously. Through the cooperation of the convex post and the sliding groove, the two piston rods 106 are driven to perform alternating reciprocating motion within the dual-cylinder pump cylinder 102. The two piston rods 106 alternately rise and fall, compressing the air in the corresponding main pump air chamber. With the alternating opening and closing of the first one-way valve 105 and the second one-way valve 1051, the compressed air is continuously forced into the three-way guide pipe 110 through the air outlet pipe 104. The rice seeds falling into the three-way guide pipe 110 are blown out from its right port under the pressure of the airflow. The two bottom balance chambers maintain air pressure balance with the outside atmosphere through the second air inlet, ensuring smooth piston movement.

[0043] When the two eccentric transmission gears 107 rotate, the trapezoidal protrusions 201 on them alternately push the sliding rods 206 on the front and rear sides to slide back and forth. Through the linkage between the sliding rods 206 and the rotating plate 203, the square discharge window swings back and forth continuously, so that the sprayed rice seeds can be evenly spread over a large area in the front and rear directions.

[0044] The actuating pins 304 on the two eccentric transmission gears 107 rotate with them, alternately pressing against the L-shaped lever on the spreading plate 302, pushing the spreading plate 302 downward and stretching the spring 303; after the actuating pins 304 pass the L-shaped lever, the spring 303 elastically resets, causing the spreading plate 302 to rebound upward. This continuous action causes the spreading plate 302 to continuously vibrate up and down at high frequency. The rice seeds sprayed from the three-way guide pipe 110 fall onto the vibrating spreading plate 302 and are scattered over a wider area. Combined with the back-and-forth swinging of the square discharge window, this significantly increases the spreading width and uniformity.

[0045] During the sowing process, the flow sensor 403 of the intelligent anti-blocking flow guiding component monitors the rice seed flow in real time. When a slowdown in flow is detected (such as a tendency to blockage), the sensor transmits a signal to the control module. The control module then starts the motor 401 to drive the flexible anti-blocking lever 402 to rotate at a low speed, gently guiding the rice seeds in the three-way guide pipe 110, allowing the rice seeds to pass through smoothly and be discharged normally, avoiding blockage and ensuring the continuity and efficiency of the sowing operation.

[0046] The above are merely preferred embodiments of the present invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A smart rice seed broadcasting device for rice cultivation, characterized in that, The device includes a housing (101), with two shoulder straps on the left side for carrying the device on the operator's chest; a storage hopper (103) and a three-way guide pipe (110) on the right side of the housing (101), the three-way guide pipe (110) being connected to the storage hopper (103); a double-cylinder air pump cylinder (102) is installed inside the housing (101), the double-cylinder air pump cylinder (102) being connected to the three-way guide pipe (110) via an air outlet pipe (104) for pneumatic operation. The rice seeds are blown out in a certain way; a discharge port swing guide component is provided at the right port of the three-way guide pipe (110). The discharge port swing guide component has a square discharge window that can swing back and forth, which is used to spread the blown rice seeds back and forth in the front and back directions; a spreading plate (302) that can shake up and down is provided below the square discharge window, which is used to throw the rice seeds to a farther range; an intelligent anti-blocking guide component is also provided on the box (101), which is used to monitor the rice seed conveying status in real time and automatically clear the blockage when a blockage trend occurs.

2. The intelligent rice seed broadcasting device for rice cultivation according to claim 1, characterized in that it has a three-way valve. The feed pipe (110) is fixedly connected to the right wall of the box (101). The three-way feed pipe (110) is located directly below the storage hopper (103), and the three-way feed pipe (110) is connected to the inside of the storage hopper (103) through its top port to receive rice seeds from the storage hopper (103).

3. The intelligent rice seed broadcasting device for rice cultivation according to claim 2, characterized in that, The double-cylinder pump cylinder (102) is located inside the housing (101). The double-cylinder pump cylinder (102) has two air chambers symmetrically distributed front and back. Each air chamber is connected to a piston rod (106) in a vertical sliding manner. The top of each piston rod (106) is provided with a cylindrical piston head. The cylindrical piston head is sealed to the inner wall of the corresponding air chamber of the double-cylinder pump cylinder (102) to separate each air chamber into the main pump air chamber located above and the bottom balance chamber located below. The two main pump air chambers of the double-cylinder pump cylinder (102) are connected to each other through an air outlet pipe (104). The other end of the air outlet pipe (104) is connected to the lower left port of the three-way guide pipe (110).

4. The intelligent rice seed broadcasting device for rice cultivation according to claim 3, characterized in that, The exhaust pipe (104) is equipped with a first one-way valve (105) at the connection point near each main pump air chamber, which is used to control the compressed air in each main pump air chamber to flow only unidirectionally to the exhaust pipe (104); the top wall of the double-cylinder pump cylinder (102) is provided with a first air inlet corresponding to each air chamber, and a second one-way valve (1051) is provided in each first air inlet, which is used to control the external air to flow only unidirectionally into each main pump air chamber; the bottom wall of the double-cylinder pump cylinder (102) is provided with a second air inlet corresponding to each air chamber, and each second air inlet is used to connect each bottom balance chamber with the outside atmosphere, so as to realize the air pressure balance of each bottom balance chamber during piston movement.

5. The intelligent rice seed broadcasting device for rice cultivation according to claim 4, characterized in that, The housing (101) is equipped with a manual reciprocating air pump drive assembly, which includes a crank handle (108), two drive gears (109), and two eccentric transmission gears (107). The crank handle (108) is rotatably connected to the lower right side of the housing (101), and two drive gears (109) are fixedly connected to the middle of the crank handle (108). The lower part of the double-cylinder air pump cylinder (102) is rotatably connected to two eccentric transmission gears (107) symmetrically distributed front and rear. Each eccentric transmission gear (107) meshes with the adjacent drive gear (109) to form a complete system. Gear transmission system; the lower eccentric part of the front eccentric transmission gear (107) is provided with a protrusion, the upper eccentric part of the rear eccentric transmission gear (107) is provided with a protrusion, and the lower part of each piston rod (106) is provided with a sliding groove. Each protrusion is embedded in the sliding groove of the corresponding piston rod (106) to convert the rotational motion of the eccentric transmission gear (107) into the up-and-down reciprocating linear motion of the piston rod (106). In the initial state, the front piston rod (106) is in a low position and the rear piston rod (106) is in a high position to realize the staggered reciprocating motion of the two piston rods (106).

6. The intelligent rice seed broadcasting device for rice cultivation according to claim 5, characterized in that, The square discharge window is formed by two fixed plates (202) spaced apart vertically and two rotating plates (203) symmetrically distributed front and back. The two fixed plates (202) are fixedly connected to the right side of the box (101) and located near the right end of the three-way guide pipe (110). The two rotating plates (203) are rotatably connected between the two fixed plates (202). Each rotating plate (203) has a swing arm (204) at its top, and a connecting rod (205) is rotatably connected between the two swing arms (204) to realize the linkage of the two rotating plates (203). The discharge port swing guide assembly also includes two sliding rods (206) symmetrically distributed front and back. Each sliding rod (206) is slidably connected to the box (101). 1) Inside the right wall, each rotating plate (203) is provided with a through-type mounting hole on the right side of the side away from each other. Each sliding rod (206) is inserted into the corresponding hole to transmit the sliding motion of the sliding rod (206) to the corresponding rotating plate (203). Each eccentric transmission gear (107) is provided with a uniformly distributed protrusion (201) along the circumference on the side away from each other. Each protrusion (201) is arranged in a trapezoidal shape. The protrusion (201) on the rear eccentric transmission gear (107) is staggered from the protrusion (201) on the front eccentric transmission gear (107) to alternately push the sliding rod (206) on the front and rear sides so that the square discharge window continues to swing back and forth in the front and rear directions.

7. A smart rice seed broadcasting device for rice cultivation according to claim 6, characterized in that, A fixing block (301) is fixedly connected to the right side of the housing (101) near the fixing plate (202). The fixing block (301) is located below the square discharge window. The spreading plate (302) is rotatably connected to the right side of the fixing block (301). The spreading plate (302) is connected to the right wall of the housing (101) by two springs (303) to achieve the elastic reset of the spreading plate (302). Each eccentric transmission gear (107) has a uniformly distributed trigger post (304) on the side that is close to each other. The spreading plate (302) has two L-shaped levers symmetrically distributed in front and behind. The two L-shaped levers extend from the right wall of the housing (101) into the area between the two eccentric transmission gears (107) to alternately press the L-shaped levers when the trigger post (304) rotates. With the elastic reset of the spring (303), the spreading plate (302) continuously shakes up and down.

8. A smart rice seed broadcasting device for rice cultivation according to claim 7, characterized in that, The intelligent anti-blocking flow guiding component includes a motor (401) installed on the upper right side of the housing (101), a flexible anti-blocking lever (402) connected to the output shaft of the motor (401) via a coupling, and a flow sensor (403) installed on the inner wall of the three-way guide pipe (110). The flexible anti-blocking lever (402) extends into the three-way guide pipe (110) and is used to rotate and move inside the three-way guide pipe (110) to guide the flow of rice seeds. The flow sensor (403) is electrically connected to the motor (401) via a control module and is used to detect the flow signal of rice seeds in the three-way guide pipe (110) in real time. When an abnormal flow is detected, the control module controls the motor (401) to start and drive the flexible anti-blocking lever (402) to rotate for guidance.

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