Seed fertilizer tail end pressure stabilizing device and pneumatic seeder

Abstract

The invention relates to a seed fertilizer tail end pressure stabilizing device and a pneumatic seeder. The seed fertilizer tail end pressure stabilizing device comprises a main pipe, the main pipe is communicated with a feeding pipe, the top of the feeding pipe is provided with a feeding port, the bottom of the main pipe is provided with a discharging port, the top end of the main pipe is provided with a threaded pipe, the threaded pipe is in threaded connection with a riser pipe, and the riser pipe is provided with a plurality of windows in the circumferential direction; the riser pipe can rotate to adjust the area of the window blocked by the threaded pipe so as to adjust the ventilation area of the window of the riser pipe. By adopting the pressure stabilizing device disclosed by the invention, high-standard and high-precision penetration of seed fertilizer into soil is realized.

Description

Technical Field

[0001] The invention relates to the technical field of agricultural machinery, and in particular to a terminal voltage stabilizing device for seed and fertilizer and a pneumatic seeder. Background Art

[0002] The statements herein merely provide background information related to the present invention and do not necessarily constitute prior art.

[0003] With the development of moderate-scale land management, traditional small-scale mechanical seeding equipment is developing towards large-scale and intelligent pneumatic seeding equipment, and seeding and fertilization are completed by pneumatic seeding distributors. Pneumatic seeding machines have important technical advantages such as high autonomy, mobility, productivity, easy loading and adjustment, and have far-reaching development prospects in conservation agriculture technology. However, the inventors found that when the existing pneumatic seeding machines are in operation, the seed fertilizer needs to be transported remotely, the required airflow is large, the seed fertilizer transportation speed is fast, and the seed fertilizer at the end will cause rebound when entering the soil, resulting in poor consistency in sowing depth and poor uniformity in the distribution of seed fertilizer in the seedling belt, which has a great impact on emergence and later fertilizer supply. Summary of the invention

[0004] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a seed and fertilizer terminal pressure stabilizing device and a pneumatic seeder, which overcome the defects existing in the operation of the current pneumatic seeder.

[0005] In order to achieve the above object, the present invention is implemented through the following technical solutions:

[0006] In a first aspect, an embodiment of the present invention provides a fertilizer terminal pressure stabilizing device, comprising a main pipe, the main pipe is connected to a feed pipe, a feed port is provided at the top of the feed pipe, a discharge port is provided at the bottom of the main pipe, a threaded pipe is provided at the top of the main pipe, the threaded pipe is threadedly connected to a riser pipe, and a plurality of windows are provided in the circumferential direction of the riser pipe;

[0007] The riser pipe can be rotated to adjust the area of ​​the threaded pipe blocking window to achieve the adjustment of the ventilation area of ​​the riser pipe window.

[0008] Optionally, the height of the feed port of the feed pipe is higher than the height of the top of the main pipe.

[0009] Optionally, the feed pipe is a spiral pipe, including a spiral pipe section wrapped around the outer circumference of the main pipe, the top of the spiral pipe section is connected to the feed pipe section, the feed pipe section is a straight pipe section, the top of the feed pipe section is provided with a feed port, and the inner diameter of the feed pipe section is larger than the inner diameter of the rest of the spiral pipe.

[0010] Optionally, a first flange is provided on the top of the main pipe, a second flange matching the first flange is provided on the bottom end of the threaded pipe, and the top end of the main pipe and the threaded pipe are fixedly connected via the first flange and the second flange.

[0011] Optionally, an outlet pipe section is provided at the bottom end of the main pipe, the outlet pipe section is provided with a discharge port, and the inner diameter of the outlet pipe section is larger than the inner diameter of the rest of the main pipe.

[0012] Optionally, an anti-loosening mechanism is provided between the threaded tube and the riser tube, and the anti-loosening mechanism includes a spring, the spring is sleeved on the outer circumference of the threaded tube, the bottom end of the spring is connected to the flange at the bottom end of the threaded tube, the top end of the spring is connected to the bottom end of the tray, the tray is sleeved on the outer circumference of the threaded tube, and the top end of the tray is engaged with the bottom end of the riser tube through a serrated surface.

[0013] Optionally, the length of the spring in a natural state is greater than the axial length of the threaded tube.

[0014] Optionally, a top cover is provided at the top end of the riser pipe, the diameter of the top cover is larger than the outer diameter of the riser pipe, and the outer peripheral surface of the top cover is provided with knurling.

[0015] Optionally, the plurality of windows are distributed at equal intervals along the circumferential direction of the riser pipe.

[0016] In a second aspect, an embodiment of the present invention provides a pneumatic seeder, provided with the seed and fertilizer terminal pressure stabilizing device described in the first aspect, wherein the feed port is connected to the seed and fertilizer conveying pipe, and the discharge port is connected to the upper position of the furrow opener.

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

[0018] 1. The terminal pressure stabilizing device for seed fertilizer of the present invention has a threaded pipe on the top of the main pipe, which is threadedly connected with a riser pipe, and the riser pipe is provided with a window. After the airflow for conveying seed fertilizer enters the main pipe through the feed pipe, most of the airflow leaks through the window of the riser pipe, and the speed of seed fertilizer entering the soil is greatly reduced, thereby avoiding rebound, achieving high-standard and high-precision soil entry, ensuring the consistency of sowing depth and uniformity of fertilizer distribution, and because the speed of the seed fertilizer airflow is reduced at the end, the collision between the seed fertilizer and the furrow opener is reduced, thereby reducing the breakage of the seed fertilizer and improving the utilization rate of the seed fertilizer. In addition, when the furrow opener is blocked, the seed fertilizer can be discharged through the window, thereby avoiding the loss caused by the blockage of the seed and fertilizer discharge system.

[0019] 2. The seed fertilizer terminal pressure stabilizing device of the present invention adopts a spiral tube as the feed pipe, which further reduces the speed of the airflow on the one hand, and reduces the collision of the seed fertilizer on the other hand, thereby improving the utilization rate of the seed fertilizer.

[0020] 3. In the seed fertilizer terminal pressure stabilizing device of the present invention, the riser pipe is threadedly connected to the threaded pipe. By rotating the riser pipe, the riser pipe can move along the axial direction of the threaded pipe, thereby realizing the adjustment of the area of ​​the threaded pipe blocking window, and then realizing the adjustment of the window ventilation area, thereby realizing the adjustment of the seed fertilizer terminal speed, and improving the applicability of the pressure stabilizing device.

[0021] 4. The seed fertilizer terminal pressure stabilizing device of the present invention is provided with a spring, a tray, etc. Under normal conditions, the elastic force of the spring can be used to apply an axial force to the riser pipe, thereby preventing the connection between the riser pipe and the threaded pipe from loosening, making it difficult for the riser pipe and the threaded pipe to loosen under vibration conditions, thereby improving the adaptability of the entire device to the working environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

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

[0024] Figure 2 This is a schematic diagram of the assembly of the feed pipe and the main pipe in Example 1 of the present invention;

[0025] Figure 3 Schematic diagram of the threaded pipe and the second flange in Example 1 of the present invention;

[0026] Figure 4 Schematic diagram of a riser pipe in Example 1 of the present invention;

[0027] Figure 5 is a schematic diagram of the spring structure of embodiment 1 of the present invention;

[0028] Figure 6 This is a schematic diagram of the structure of a tray according to Embodiment 1 of the present invention;

[0029] Among them, 1. main pipe, 2. feed port, 3. discharge port, 4. threaded pipe, 5. riser pipe, 6. window, 7. spiral pipe section, 8. feed pipe section, 9. first flange, 10. second flange, 11. second fixing hole, 12. top cover, 13. spring, 14. tray, 15. annular groove, 16. first serrated surface, 17. second serrated surface. DETAILED DESCRIPTION

[0030] Example 1

[0031] This embodiment provides a fertilizer terminal voltage stabilizing device, such as Figure 1-Figure 4As shown, it includes a main pipe 1 and a feed pipe, the feed pipe is connected to the main pipe 1 so that the internal spaces of the feed pipe and the main pipe 1 are communicated, a feed port 2 is provided at the top of the feed pipe for receiving seed fertilizer, the height of the feed port 2 is higher than the height of the top surface of the main pipe 1, a discharge port 3 is provided at the bottom of the main pipe 1 for the outflow of seed fertilizer, a threaded pipe 4 is coaxially fixed to the top of the main pipe 1, a riser pipe 5 with an open bottom and a closed top is coaxially threadedly connected to the top of the threaded pipe 4, a plurality of windows 6 are provided on the wall of the riser pipe 5 to connect the riser pipe 5, the threaded pipe 4 and the internal space of the main pipe 1 with the external environment, an anti-loosening mechanism is also provided between the riser pipe 5 and the threaded pipe 4 to prevent the connection between the riser pipe 5 and the threaded pipe 4 from loosening, so as to meet the working requirements under a vibration environment.

[0032] The feed pipe is a spiral pipe, having a spiral pipe section 7 wound around the outer circumference of the main pipe, the spiral pipe section 7 is connected to the internal space of the main pipe 1, a feed pipe section 8 is provided at the top of the spiral pipe section 7, the feed pipe section 8 is a straight pipe, the inner diameter of the feed pipe section 8 is larger than the inner diameter of the rest of the feed pipe, and a feed port 2 is provided on the top pipe wall of the feed pipe section 8.

[0033] In this embodiment, the feed pipe adopts a spiral tube, which reduces the speed of the airflow on the one hand, and reduces the collision of the seed fertilizer on the other hand, thereby improving the utilization rate of the seed fertilizer.

[0034] The main pipe 1 is a vertical pipe with an outlet pipe section at the bottom. The inner diameter of the outlet pipe section is larger than the inner diameter of the rest of the main pipe. A discharge port 3 is provided at the bottom of the pipe wall of the outlet pipe section.

[0035] Furthermore, the top end of the main pipe 1 is detachably fixedly connected to the threaded pipe 4. Specifically, the top end of the main pipe 1 is provided with a first flange 9, and the first flange 9 is provided with a plurality of first fixing holes at equal intervals along the circumferential direction. Preferably, four first fixing holes are provided at equal intervals along the circumferential direction. Correspondingly, the bottom of the threaded pipe 4 is provided with a second flange 10, and the second flange 10 matches the first flange 9 and is provided with a second fixing hole 11 matching the first fixing hole. The first flange 9 and the second flange 10 are detachably fixedly connected through the first fixing hole, the second fixing hole 11, and bolts and nuts to realize the coaxial detachable fixed connection between the top end of the main pipe 1 and the threaded pipe 4.

[0036] The outer surface of the tube wall of the threaded tube 4 is provided with an external thread structure, and the external thread structure is arranged along the axial direction of the threaded tube 4. The inner tube surface of the riser tube 5 is provided with an internal thread structure matching the external thread structure. The riser tube 5 is sleeved on the outer periphery of the top of the threaded tube 4 and is threadedly connected with the threaded tube.

[0037] A plurality of windows 6 are provided on the upper part of the wall of the riser pipe 5 . In this embodiment, the plurality of windows 6 are arranged at equal intervals along the circumferential direction of the riser pipe. Preferably, four windows 6 are provided on the wall of the riser pipe 5 .

[0038] By rotating the riser pipe 5, the riser pipe 5 can move along the axial direction of itself and the threaded pipe 4, so that the area of ​​the window 6 blocked by the threaded pipe 4 can be adjusted, thereby realizing the adjustment of the terminal speed of the fertilizer and improving the applicability of the entire voltage stabilizing device.

[0039] Furthermore, in order to facilitate the staff to rotate the riser pipe 5, a top cover 12 is provided at the top of the riser pipe. The diameter of the top cover 12 is larger than the outer diameter of the riser pipe 5, and the outer peripheral surface of the top cover 12 is provided with knurling to facilitate the staff to rotate the riser pipe 5 through the top cover.

[0040] The pneumatic seeder will generate large vibrations during operation. The connection between the riser pipe 5 and the threaded pipe 4 is prone to loosening in a vibrating environment for a long time. Therefore, an anti-loosening mechanism is provided between the riser pipe 5 and the threaded pipe 4 in this embodiment.

[0041] like Figure 5 As shown, the anti-loosening mechanism includes a spring 13, which is sleeved on the outer circumference of the threaded tube. The top and bottom surfaces of the spring 13 are processed into flat surfaces. The bottom surface of the spring 13 is connected to the upper surface of the second flange 10 at the bottom of the threaded tube 4, and the top surface of the spring 13 is connected to the bottom surface of the tray 14.

[0042] like Figure 6 As shown, the tray 14 adopts an annular structure coaxial with the threaded pipe 4 and the riser pipe 5. The bottom surface of the tray 14 is provided with an annular groove 15. The outer diameter of the annular groove 15 is larger than the outer diameter of the spring 13. The top surface of the spring 13 is connected to the bottom groove surface of the annular groove 15.

[0043] The top surface of the tray 14 is a first serrated surface 16 , and the bottom end surface of the riser pipe 5 is a second serrated surface 17 matching the first serrated surface 16 , and the first serrated surface 16 and the second serrated surface 17 are meshed.

[0044] The length of the spring 13 in the natural state is greater than that of the threaded tube 4, so that the spring 13 is always compressed under the action of the riser tube 5 to generate elastic force, and the elastic force applies force to the riser tube 5 along its axial direction, thereby playing a role in preventing loosening.

[0045] Example 2

[0046] The present embodiment provides a pneumatic seeder, which is provided with the seed and fertilizer terminal pressure stabilizing device described in Example 1, the feed port 2 is connected to the seed and fertilizer conveying pipeline or seed conveying pipe or fertilizer conveying pipe of the pneumatic seeder, the discharge port 3 is connected to the upper position of the furrow opener of the pneumatic seeder, the seed and fertilizer conveying pipeline or seed conveying pipe or fertilizer conveying pipe, the furrow opener and the remaining structures of the pneumatic seeder can adopt the existing technology and will not be described in detail here.

[0047] In this embodiment, an improvement is made on the basis of the existing pneumatic seeder. The seed and fertilizer terminal pressure stabilizing device of Example 1 is installed on the end of the pneumatic seeder, the main pipe is fixed on the frame of the pneumatic seeder, the feed port is connected to the seed and fertilizer delivery pipeline, and the discharge port is connected to the furrow opener. The improvement is made on the basis of the existing pneumatic seeder without improving the other structures of the pneumatic seeder. The improvement is convenient and low-cost.

[0048] The high-speed seeds or fertilizers are transported into the feed pipe by air flow, and the spiral rotates, and then the seeds or fertilizers enter the main pipe 1 with the air flow, and the air flow is evacuated at the window 6, and the seeds and fertilizers enter the furrow opener through the discharge port 3 under their own gravity.

[0049] The pneumatic seeder of this embodiment is equipped with a terminal voltage stabilizing device for seed and fertilizer. After the airflow for transporting seed and fertilizer enters the main pipe 1 through the feed pipe, most of the airflow leaks through the window 6 of the riser pipe, and the speed at which the seed and fertilizer enter the soil is greatly reduced, thereby avoiding rebound and achieving high-standard and high-precision entry into the soil, ensuring the consistency of sowing depth and uniformity of fertilizer distribution, and effectively improving the utilization efficiency of seed and fertilizer. Moreover, because the speed of the seed and fertilizer airflow is reduced at the end, the collision between the seed and fertilizer and the furrow opener is reduced, thereby reducing the breakage of the seed and fertilizer and improving the utilization rate of the seed and fertilizer. In addition, when the furrow opener is blocked, the seed and fertilizer can be discharged through the window, thereby avoiding the loss caused by blockage of the seed and fertilizer discharge system.

[0050] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A fertilizer terminal voltage stabilizing device, characterized in that: It includes a main pipe, which is connected with a feed pipe, a feed port is arranged at the top of the feed pipe, a discharge port is arranged at the bottom of the main pipe, a threaded pipe is arranged at the top of the main pipe, the threaded pipe is threadedly connected with a riser pipe, and a plurality of windows are arranged along the circumferential direction of the riser pipe; The riser pipe can be rotated to adjust the area of ​​the threaded pipe blocking window to achieve the adjustment of the ventilation area of ​​the riser pipe window.

2. A fertilizer terminal voltage stabilizing device as claimed in claim 1, characterized in that: The height of the feed port of the feed pipe is higher than the height of the top of the main pipe.

3. A fertilizer terminal voltage stabilizing device as claimed in claim 1, characterized in that: The feed pipe is a spiral pipe, including a spiral pipe section wound around the outer circumference of the main pipe, the top of the spiral pipe section is connected to the feed pipe section, the feed pipe section is a straight pipe section, the top of the feed pipe section is provided with a feed port, and the inner diameter of the feed pipe section is larger than the inner diameter of the rest of the spiral pipe.

4. A fertilizer terminal voltage stabilizing device as claimed in claim 1, characterized in that: A first flange is disposed on the top of the main pipe, a second flange matching the first flange is disposed on the bottom of the threaded pipe, and the top of the main pipe and the threaded pipe are fixedly connected via the first flange and the second flange.

5. A fertilizer terminal voltage stabilizing device as claimed in claim 1, characterized in that: The bottom end of the main pipe is provided with an outlet pipe section, the outlet pipe section is provided with a discharge port, and the inner diameter of the outlet pipe section is greater than the inner diameter of the rest of the main pipe.

6. A fertilizer terminal voltage stabilizing device as claimed in claim 1, characterized in that: An anti-loosening mechanism is provided between the threaded tube and the riser tube, and the anti-loosening mechanism includes a spring, the spring is sleeved on the outer circumference of the threaded tube, the bottom end of the spring is connected to the flange at the bottom end of the threaded tube, the top end of the spring is connected to the bottom end of the tray, the tray is sleeved on the outer circumference of the threaded tube, and the top end of the tray is engaged with the bottom end of the riser tube through a serrated surface.

7. A fertilizer terminal voltage stabilizing device as claimed in claim 6, characterized in that: The length of the spring in a natural state is greater than the axial length of the threaded tube.

8. A fertilizer terminal voltage stabilizing device as claimed in claim 1, characterized in that: A top cover is arranged at the top end of the riser pipe, the diameter of the top cover is larger than the outer diameter of the riser pipe, and the outer peripheral surface of the top cover is provided with knurling.

9. A fertilizer terminal voltage stabilizing device as claimed in claim 1, characterized in that: The plurality of windows are distributed at equal intervals along the circumferential direction of the riser pipe.

10. A pneumatic seeder, characterized in that: A seed fertilizer terminal pressure stabilizing device as described in any one of claims 1 to 9 is provided, wherein a feed port is connected to a seed fertilizer conveying pipe, and a discharge port is connected to an upper position of a furrow opener.

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