Air-blowing throwing device of seeding machine

Abstract

The invention provides an air-blowing throwing device of a seeding machine, and relates to the technical field of seed throwing, the air-blowing throwing device comprises a top groove formed in a vertical pipe, a top disc is slidably connected in the top groove, the lower end of the top disc is provided with at least six groups of telescopic rods along the axis, and the telescopic rods are arranged in the top groove. A plurality of side grooves are formed in the position, close to the top disc, of each telescopic rod, an adjusting ring is connected to the interior of the vertical pipe in a threaded mode, a plurality of control grooves corresponding to the telescopic rods are formed in the adjusting ring, the telescopic rods are slidably connected into the control grooves correspondingly, an inner sleeve is coaxially installed in the adjusting ring, and the inner sleeve is sleeved with the inner sleeve. A fine adjustment rod is installed in the inner sleeve in a threaded mode, a pressure spring is fixedly installed on the top disc, the other end of the pressure spring abuts against the fine adjustment rod, through cooperation of the top disc, the telescopic rod and the control groove, accurate control over the air blowing interval time is achieved, and by means of the design, the sowing accuracy is improved; the adaptability and the seeding effect of the equipment are enhanced.

Description

Technical Field

[0001] The invention relates to the technical field of seed placement, and more particularly to an air-blowing placement device for a seeding machine. Background Art

[0002] In modern agricultural production, the seeder is an indispensable and important equipment, which improves the efficiency and accuracy of sowing. The traditional sowing method often relies on manual labor, which is not only time-consuming and labor-intensive, but also difficult to ensure the uniformity and depth consistency of sowing. With the development of agricultural technology, pneumatic seeders came into being. This type of seeder uses the airflow generated by compressed air to transport seeds. By controlling the air pressure, the seeds can be accurately placed in the predetermined position. This method not only improves the efficiency of sowing, but also ensures that the seeds are evenly distributed in the field, creating better conditions for the growth of crops. The working principle of the pneumatic seeder is to use a short air pressure pulse to push the seeds so that they can obtain sufficient initial velocity and accurately fall into the sowing furrow.

[0003] However, although pneumatic seeders play an important role in agricultural production, existing equipment still has some limitations. The most prominent problem is that it is difficult to adjust the air blowing interval. Different crop seeds, due to differences in size, weight and shape, require different air blowing intervals to ensure the best sowing effect. For example, smaller seeds may require a shorter interval, while larger or heavier seeds may require a longer interval. In addition, factors such as field conditions, sowing depth and travel speed will also affect the ideal air blowing interval. Existing equipment has insufficient adjustment capabilities in this regard and often adopts a fixed interval, which leads to unstable sowing effects under different conditions. Sometimes, problems such as inadequate seed placement, overlapping sowing or excessive sowing intervals may occur, which will not only affect the growth of crops, but may also increase seed waste and reduce the overall efficiency and economic benefits of agricultural production. Summary of the invention

[0004] In view of the problems existing in the prior art, the present invention provides an air-blowing delivery device for a seeder to solve the technical problems mentioned in the background technology.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solutions: an air-blowing delivery device for a seed drill, comprising a seed drill body and a plurality of vertical tubes fixedly mounted on the seed drill body;

[0006] The spacing mechanism comprises a top groove provided in the vertical tube, a top plate being slidably connected in the top groove, at least six groups of telescopic rods being installed along the axis at the lower end of the top plate, a plurality of side grooves being provided at the position of each telescopic rod close to the top plate, an adjustment ring being threadedly connected in the vertical tube, a plurality of control grooves corresponding to the telescopic rods being provided on the adjustment ring, a plurality of telescopic rods being slidably connected in the control grooves respectively, an inner sleeve being coaxially installed in the adjustment ring, a fine-tuning rod being threadedly installed in the inner sleeve, a compression spring being fixedly installed on the top plate, and the other end of the compression spring abutting against the fine-tuning rod; and

[0007] The connecting mechanism comprises a sealing groove provided on the upper end surface of the vertical tube, an insert sleeve is installed in the sealing groove, a rubber tube is connected to the insert sleeve, an air intake pipe is installed on the rubber tube, and the air intake pipe is connected to a high-pressure gas source.

[0008] Preferably, the spacing mechanism includes a gathering tube coaxially installed in the vertical tube, a telescopic sleeve is slidably connected in the gathering tube, an internal groove is provided in the telescopic sleeve, and the internal groove and the internal sleeve are of the same size. This design achieves airflow control through the cooperation of the gathering tube and the telescopic sleeve, thereby ensuring the accuracy of seed placement.

[0009] Preferably, a cone sleeve is installed at the lower end of the telescopic sleeve, and a return spring is installed on the cone sleeve, and the other end of the return spring abuts against the lower end surface of the gathering tube. This design realizes the automatic resetting function of the telescopic sleeve through the combination of the cone sleeve and the return spring, ensuring that the device can return to its initial state after each air blowing, thereby improving the efficiency and stability of continuous operation.

[0010] Preferably, a through groove is coaxially opened in the cone sleeve, and a hexagonal groove is opened in the fine-tuning rod, and the through groove and the hexagonal groove are of the same size. This design provides a convenient adjustment interface for the operator through the cooperation of the through groove and the hexagonal groove, simplifies the fine-tuning process, and improves the operability of the equipment.

[0011] Preferably, a plurality of fixing springs are installed at equal intervals on the upper end surface of the adjustment ring, a plurality of fitting rings are connected to the vertical tubes, a stop ring is coaxially installed inside the vertical tube, and the fitting ring abuts against the stop ring. This design ensures a stable connection between the vertical tube and the adjustment ring through the synergistic effect of the fixing springs, the fitting ring and the stop ring.

[0012] Preferably, a feed pipe is installed on each of the vertical tubes, and the feed pipe is connected to the seeder body, and a plurality of elastic plates are installed in each of the vertical tubes at equal intervals along the axis. This design realizes temporary storage of seeds through the cooperation of the feed pipe and the elastic plate, ensuring that an approximate number of seeds can be released each time the air blow is applied.

[0013] Preferably, the connecting mechanism further comprises a plurality of intermediate springs which are installed on the insertion sleeve at equal intervals, a pressure tube is coaxially installed on the intake pipe, and the plurality of intermediate springs are respectively connected to the pressure tube.

[0014] Preferably, an embedded groove is opened in the vertical tube, and a threaded tube is connected to the embedded groove for limited rotation. The threaded tube is threadedly connected to the pressing tube. This design realizes the adjustment of the pressing tube position through the cooperation of the embedded groove and the threaded tube, and the limited rotation design ensures the stability of the adjustment process.

[0015] Beneficial effects:

[0016] Compared with the prior art, the present invention provides an air-blowing delivery device for a seed drill, which has the following beneficial effects:

[0017] This innovative air-blowing delivery device for seed drills uses an interval control mechanism, which relies on the coordination of the top disc, telescopic rod and control slot. These three key components work together to form an air-blowing interval control system. The top disc is the main driving component, and its movement directly affects the timing of the release of the airflow; the telescopic rod acts as an intermediary for transmitting motion, and changes in its length can fine-tune the frequency of air blowing; the control slot guides the release of the airflow. This design allows the control of the air-blowing interval time.

[0018] More importantly, the flexibility of this design enables the equipment to easily cope with different seed types and changing sowing conditions. For example, for smaller seeds, the air blowing interval can be adjusted to a shorter one to ensure uniform distribution; while for larger or heavier seeds, the interval time can be increased to prevent seed accumulation. This adaptability not only improves sowing results, but also significantly reduces seed waste, bringing direct economic benefits to farmers.

[0019] In addition, the device's dual adjustment mechanism further enhances its practicality and precision. The coordinated design of the adjustment circle and the fine-tuning rod provides the operator with a simple adjustment method. The adjustment circle can be adjusted for switching between different types of seeds, and the fine-tuning rod can also be adjusted to perform fine-tuning based on specific field conditions (such as soil moisture, terrain, etc.). This dual adjustment not only simplifies the adjustment process and reduces the difficulty of operation, but also improves the accuracy of the adjustment. Operators can quickly respond to different seed types and field conditions and achieve the best sowing effect without complicated operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of an air-blowing delivery device for a seed drill in the present invention;

[0021] Figure 2 It is a schematic diagram of the structure of the vertical pipe and the feed pipe in the present invention;

[0022] Figure 3 For the present invention Figure 2 A schematic cross-sectional structure diagram of;

[0023] Figure 4 It is a schematic diagram of the cross-sectional structure of the vertical tube in the present invention;

[0024] Figure 5 It is a schematic diagram of the exploded cross-sectional structure of the adjusting tube and the cone sleeve in the present invention;

[0025] Figure 6 It is a cross-sectional structural schematic diagram of the present invention;

[0026] Figure 7 It is a schematic diagram of the structure of the top plate in the present invention;

[0027] Figure 8 It is a structural schematic diagram of the adjustment ring in the present invention;

[0028] Fig. 9 It is a schematic cross-sectional structural diagram of the connecting mechanism in the present invention.

[0029] In the figure: 11, seeder body; 12, vertical tube; 21, top groove; 22, top plate; 23, telescopic rod; 24, side groove; 25, adjustment ring; 26, control groove; 27, inner sleeve; 28, fine-tuning rod; 29, compression spring; 31, sealing groove; 32, insertion sleeve; 33, rubber tube; 34, air intake pipe; 35, intermediate spring; 36, pressure pipe; 37, embedded groove; 38, threaded pipe; 210, gathering pipe; 211, telescopic sleeve; 212, inner groove; 213, cone sleeve; 214, return spring; 215, through groove; 216, hexagonal groove; 217, fixing spring; 218, fitting ring; 219, stop ring; 220, feed pipe; 221, elastic plate. DETAILED DESCRIPTION

[0030] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application may be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0031] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meanings as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0032] In the present invention, unless otherwise specified, the directions used, such as "up" and "down", usually refer to the directions shown in the drawings, or to the vertical, perpendicular or gravity directions; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the drawings; "inside" and "outside" refer to the inside and outside relative to the outline of each component itself, but the above-mentioned directions are not used to limit the present invention.

[0033] See also Figure 1-8 A pneumatic delivery device for a seed drill comprises a seed drill body 11 and a plurality of vertical tubes 12 fixedly mounted on the seed drill body 11, a spacing mechanism comprises a top groove 21 opened in the vertical tube 12, a top plate 22 is slidably connected in the top groove 21, and no less than six groups of telescopic rods 23 are installed along the axis at the lower end of the top plate 22, and each telescopic rod 23 is provided with a plurality of side grooves 24 near the top plate 22, an adjusting ring 25 is connected with an inner thread of the vertical tube 12, a plurality of control grooves 26 corresponding to the telescopic rod 23 are opened on the adjusting ring 25, and a plurality of telescopic rods 23 are respectively slidably connected in the control grooves 26, an inner sleeve 27 is coaxially mounted in the adjusting ring 25, a fine-tuning rod 28 is internally threadedly mounted on the inner sleeve 27, a compression spring 29 is fixedly mounted on the top plate 22, and the other end of the compression spring 29 abuts against the fine-tuning rod 28, and the spacing mechanism comprises a gathering tube 210 coaxially mounted in the vertical tube 12, and the gathering tube 210 The inner sliding connection is provided with a telescopic sleeve 211, and an internal groove 212 is provided in the telescopic sleeve 211. The internal groove 212 and the internal sleeve 27 are of the same size. A cone sleeve 213 is installed at the lower end of the telescopic sleeve 211, and a return spring 214 is installed on the cone sleeve 213. The other end of the return spring 214 abuts against the lower end surface of the gathering tube 210. A through groove 215 is provided coaxially in the cone sleeve 213, and a hexagonal groove 216 is provided in the fine-tuning rod 28. The through groove 215 and the hexagonal groove 216 The upper end surface of the adjustment ring 25 is of the same size and is evenly spaced with a plurality of fixing springs 217. A plurality of vertical tubes 12 are connected with fitting rings 218. A stop ring 219 is coaxially installed in the vertical tube 12. The fitting ring 218 abuts against the stop ring 219. A feed pipe 220 is installed on each vertical tube 12. The feed pipe 220 is connected to the seeder body 11, and a plurality of elastic plates 221 are evenly spaced along the axis in each vertical tube 12.

[0034] When using the seeder body 11 for sowing, first connect the seeder body 11 to the external traction equipment, then put the corresponding seeds into the seeder body 11, and transport the seeds to the vertical tube 12 along the multiple feed pipes 220 through the seeder body 11, and the seeds flow into the multiple elastic plates 221, the seeds can be stuck on the elastic plates 221 and will not fall down, and then the high-pressure air source can continuously provide air pressure to the vertical tube 12, and the telescopic rod 23 moves back and forth in the control groove 26 until each time the side groove 24 passes through the control groove 26, the high-pressure gas will be ejected, and then it will be sprayed onto the seeds through the gathering tube 210 to move the seeds downward, and at the same time, the multiple elastic plates 221 are also deformed, thereby completing the seed delivery process.

[0035] When the top plate 22 contacts the top groove 21, the top groove 21 is in a sealed state, so the pressure will be transmitted to the top plate 22, so the top plate 22 will be subjected to a large pressure at this time, and then accelerate to move downward, when the top plate 22 unties the seal between the top groove 21, it has a large speed, and then drives multiple telescopic rods 23 to slide along the control groove 26, because the top plate 22 unties the seal between the top groove 21, the upper and lower ends of the top plate 22 are in a connected state, and the pressure on the top plate 22 is the pressure of the area of ​​several control grooves 26, so the pressure will decrease, and then as the compression spring 29 is compressed When the elastic force of the compression spring 29 is equal to the pressure of the gas at this position, the speed reaches the maximum, and due to the speed, the top plate 22 will continue to slide downward, so that the side grooves 24 are connected to the two ends of the control groove 26. At this time, the gas will be discharged from the control groove 26, completing a seed delivery, and then the top plate 22 stops moving, and the pressure of the compression spring 29 is greater than the pressure of the gas, so it will drive the top plate 22 to move in the opposite direction until the top plate 22 returns to the top groove 21 again, and then the top plate 22 and the top groove 21 are sealed. At this time, the gas pressure is greater than the pressure of the compression spring 29, and the next cycle is carried out, so the seed delivery process can be completed.

[0036] When it is necessary to adjust the interval time of seed delivery, it is only necessary to adjust the initial position of the compression spring 29 and the initial position of the adjustment ring 25. When it is necessary to adjust the initial position of the fine-tuning rod 28, a longer wrench is passed through the through slot 215 to insert it into the hexagonal slot 216, and then the hexagonal slot 216 is rotated to drive the rotation of the fine-tuning rod 28. Since the fine-tuning rod 28 is threadedly connected to the internal sleeve 27, the elastic force of the compression spring 29 can be changed, thereby changing the interval time. When it is necessary to change the position of the adjustment ring 25, a shorter wrench is inserted into the through slot 215, and then the hand is placed on the cone sleeve 213 to push the cone sleeve 213 to move upward, and then the internal groove 212 is stuck in the internal sleeve 27. At this time, the adjustment ring 25 can be driven to rotate, and the adjustment ring 25 is threadedly connected to the vertical tube 12, thereby completing the adjustment process of the two. By changing the positions of the two, the interval of air blowing delivery can be adjusted to meet the requirements of seed delivery.

[0037] See also Fig. 9 The connecting mechanism includes a sealing groove 31 formed on the upper end surface of the vertical tube 12, an insert sleeve 32 is installed in the sealing groove 31, a rubber tube 33 is connected to the insert sleeve 32, an air intake pipe 34 is installed on the rubber tube 33, and the air intake pipe 34 is connected to a high-pressure gas source. The connecting mechanism also includes a plurality of intermediate springs 35 installed on the insert sleeve 32 at equal intervals, a pressure pipe 36 is coaxially installed on the air intake pipe 34, and a plurality of intermediate springs 35 are respectively connected to the pressure pipe 36. An embedded groove 37 is formed in the vertical tube 12, and a threaded pipe 38 is connected to the embedded groove 37 for limited rotation, and the threaded pipe 38 is threadedly connected to the pressure pipe 36.

[0038] When it is necessary to connect the intake pipe 34 and the vertical pipe 12, first press the insert sleeve 32 onto the sealing groove 31, then push the pressing tube 36 downward, and then make the threaded tube 38 threadedly connected to the pressing tube 36. Since the threaded sleeve is stuck in the embedded groove 37, it will drive the pressing tube 36 to move downward, and then the intermediate spring 35 will be compressed, thereby increasing the elastic force to ensure effective sealing between the insert sleeve 32 and the sealing groove 31, and compensate the position between the intake pipe 34 and the insert sleeve 32 through the rubber tube 33, thereby completing the connection process.

[0039] In all the schemes mentioned above, the connection between two parts can be selected according to actual conditions by welding, bolt and nut matching connection, bolt or screw connection or other well-known connection methods, which will not be described one by one here. In the above, all fixed connections are preferably welded. Although the embodiments of the present invention have been shown and described, it can be understood by ordinary technicians in this field that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the attached claims and their equivalents.

Claims

1. An air-blowing delivery device for a seed drill, comprising a seed drill body (11) and a plurality of vertical tubes (12) fixedly mounted on the seed drill body (11); wherein: The spacing mechanism comprises a top groove (21) provided in a vertical tube (12), a top plate (22) being slidably connected in the top groove (21), at least six groups of telescopic rods (23) being installed along the axis at the lower end of the top plate (22), a plurality of side grooves (24) being provided at a position close to the top plate (22) of each telescopic rod (23), an adjustment ring (25) being internally threadedly connected to the vertical tube (12), a plurality of control grooves (26) corresponding to the telescopic rods (23) being provided on the adjustment ring (25), a plurality of telescopic rods (23) being slidably connected in the control grooves (26), an inner sleeve (27) being coaxially installed in the adjustment ring (25), a fine-tuning rod (28) being internally threadedly installed on the inner sleeve (27), a compression spring (29) being fixedly installed on the top plate (22), the other end of the compression spring (29) being in contact with the fine-tuning rod (28); and The connection mechanism comprises a sealing groove (31) provided on the upper end surface of the vertical tube (12), an insert sleeve (32) being installed in the sealing groove (31), a rubber tube (33) being connected to the insert sleeve (32), an air intake pipe (34) being installed on the rubber tube (33), and the air intake pipe (34) being connected to a high-pressure air source.

2. The air blowing delivery device for a seed drill according to claim 1, characterized in that: The spacing mechanism comprises a gathering tube (210) coaxially installed in the vertical tube (12), a telescopic sleeve (211) is slidably connected in the gathering tube (210), an internal groove (212) is provided in the telescopic sleeve (211), and the internal groove (212) and the internal sleeve (27) are of the same size.

3. The air blowing delivery device for a seed drill according to claim 2, characterized in that: A cone sleeve (213) is installed at the lower end of the telescopic sleeve (211), a return spring (214) is installed on the cone sleeve (213), and the other end of the return spring (214) abuts against the lower end surface of the gathering tube (210).

4. The air blowing delivery device for a seed drill according to claim 3, characterized in that: A through slot (215) is coaxially formed in the cone sleeve (213), and a hexagonal slot (216) is formed in the fine-tuning rod (28). The through slot (215) and the hexagonal slot (216) are of the same size.

5. The air blowing delivery device for a seed drill according to claim 4, characterized in that: A plurality of fixing springs (217) are installed at equal intervals on the upper end surface of the adjustment ring (25); a plurality of the vertical tubes (12) are connected with fitting rings (218); a stop ring (219) is coaxially installed inside the vertical tube (12); and the fitting ring (218) abuts against the stop ring (219).

6. The air-blowing delivery device for a seed drill according to claim 5, characterized in that: A feed pipe (220) is installed on each of the vertical tubes (12), the feed pipe (220) is connected to the planter body (11), and a plurality of elastic plates (221) are installed in each of the vertical tubes (12) at equal intervals along the axis.

7. The air blowing delivery device for a seed drill according to claim 1, characterized in that: The connection mechanism also includes a plurality of intermediate springs (35) installed at equal intervals on the insertion sleeve (32); a pressure tube (36) is coaxially installed on the intake pipe (34); and the plurality of intermediate springs (35) are respectively connected to the pressure tube (36).

8. The air-blowing delivery device for a seed drill according to claim 7, characterized in that: An embedded groove (37) is provided in the vertical tube (12), a threaded tube (38) is connected in a limited rotation manner in the embedded groove (37), and the threaded tube (38) is threadedly connected to the pressure tube (36).

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