Pepper seedling bed dibble seeding device

Abstract

The invention relates to the technical field of pepper seedling culture, in particular to a pepper seedling bed dibble seeding device which comprises a dibble seeding square frame, and a plurality of seeding adjusting groove frames are arranged on the dibble seeding square frame; a plurality of trumpet-shaped guide cylinders are arranged on each seeding adjusting groove frame, a protective cylinder is inserted into each trumpet-shaped guide cylinder, the protective cylinders are in sliding connection with the trumpet-shaped guide cylinders, and a dibble seeding cone is arranged at the bottom end of each protective cylinder; a suction nozzle I and a suction nozzle II are formed in the dibble seeding cone; the sowing adjusting groove frame is further provided with an intelligent pneumatic adsorption system used for dibble seeding of single-grain or double-grain pepper seeds through the first suction nozzle and the second suction nozzle. The pepper seedling bed dibble seeding device can achieve rapid switching of a single-grain dibble seeding mode or a double-grain dibble seeding mode, is suitable for more complex dibble seeding scenes, and is high in practicability. It can be guaranteed that the seeds are smoothly buried into the designated depth position, the seeds are sealed and buried in time, and the survival rate of the seeds is guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of pepper seedling raising, and specifically to a point sowing device for a pepper seedling raising bed. Background Art

[0002] Pepper seedling raising is a key link in pepper planting, and its sowing accuracy and efficiency directly affect the survival rate of seedlings and the later yield. At present, the point sowing operation of pepper seedling raising beds mainly relies on manual sowing or traditional mechanical point sowing devices, but these methods have obvious limitations. Manual sowing has low efficiency, high labor intensity, and it is difficult to ensure the uniformity of sowing, and problems such as missed sowing or repeated sowing are likely to occur. Although traditional mechanical point sowing devices have improved efficiency to a certain extent, their structures are fixed and they cannot flexibly adjust the sowing mode according to actual needs (such as single-seed or double-seed point sowing), resulting in poor adaptability. For example, in scenarios where double-seed point sowing is required to improve the emergence rate, existing equipment often cannot achieve precise control, and it is easy to cause uneven collision or adsorption of seeds, affecting the sowing quality. In addition, the existing technology lacks effective solutions for aspects such as the mixing uniformity of seed dressing agents, the soil covering effect after seed point sowing, and the self-cleaning function of the equipment, resulting in low seedling raising efficiency and serious seed waste. Therefore, in view of the above current situation, there is an urgent need to develop a point sowing device for a pepper seedling raising bed to overcome the deficiencies in current practical applications. Summary of the Invention

[0003] The purpose of the present invention is to provide a point sowing device for a pepper seedling raising bed to solve the problems raised in the above background art.

[0004] To achieve the above purpose, the present invention provides the following technical solutions:

[0005] A point sowing device for a pepper seedling raising bed includes a point sowing square frame, and a plurality of sowing adjustment groove frames are arranged on the point sowing square frame;

[0006] A plurality of horn-shaped flow guiding cylinders are arranged on each of the sowing adjustment groove frames, and a protective cylinder is inserted into each of the horn-shaped flow guiding cylinders. The protective cylinder is slidably connected to the horn-shaped flow guiding cylinder, and a point sowing cone is arranged at the bottom end of the protective cylinder;

[0007] A suction nozzle one and a suction nozzle two are arranged on the point sowing cone;

[0008] A lifting device for driving the protective cylinder to move is arranged in the sowing adjustment groove frame, and an intelligent pneumatic adsorption system for point sowing single or double pepper seeds through the suction nozzle one and the suction nozzle two is also arranged on the sowing adjustment groove frame.

[0009] As a further scheme of the present invention: The lifting device includes a driving member and a lifting linkage plate, and the driving member is located in the sowing adjustment groove frame;

[0010] The lifting linkage plate is connected to the output end of the driving member, and is connected to a plurality of the protective cylinders, and the lifting linkage plate is also slidably connected to the inner wall of the sowing adjustment trough frame.

[0011] As a further aspect of the present invention: it further includes: a lifting chute, which is opened on the inner wall of the trumpet-shaped diversion cylinder;

[0012] And a limit slide rail, the limit slide rail is fixedly connected to the protective cylinder, and the height detector 1 is also clamped and slidably connected to the lifting chute.

[0013] As a further aspect of the present invention: the intelligent pneumatic adsorption system includes a trachea A, a trachea B, a trachea C and an air flow control system;

[0014] In each of the sowing adjustment trough frames, a trachea A, a trachea B and a trachea C are provided. Among them, the trachea A and the trachea B are respectively communicated with the suction nozzle 1 and the suction nozzle 2, and the trachea C is communicated with a multi-functional air outlet unit provided on the sowing adjustment trough frame;

[0015] And a plurality of the trachea A, the trachea B and the trachea C are all communicated with an external air source through the air flow control system, and control valves are provided on a plurality of the trachea A, the trachea B and the trachea C;

[0016] The intelligent pneumatic adsorption system further includes a detection unit, and the detection unit is respectively connected to the sowing adjustment trough frame and the protective cylinder.

[0017] As a further aspect of the present invention: the detection unit includes:

[0018] A height detector 1, which is fixedly installed on the bottom wall of the sowing adjustment trough frame and is electrically connected to the air flow control system;

[0019] And a height detector 2, the height detector 2 is connected to the communication channel, and the height detector 2 is also respectively electrically connected to the air flow control system and the multi-functional air outlet unit.

[0020] As a further aspect of the present invention: the multi-functional air outlet unit includes:

[0021] A communication channel, which is opened on the sowing adjustment trough frame;

[0022] An annular diversion hole, which is opened on the sowing adjustment trough frame and is communicated with the communication channel, and a plurality of inclined air outlet holes are evenly distributed on the inner wall of the sowing adjustment trough frame, and a plurality of the inclined air outlet holes are all communicated with the annular diversion hole;

[0023] and a pressure detector which is located at the bottom end of the seeding adjustment trough frame and is electrically connected to the air flow control system.

[0024] As a further solution of the present invention: the air flow control system adjusts the opening and closing of the control valve and the negative pressure intensity according to the dibbling mode, wherein:

[0025] In the single-seed mode, only the air pipe A9 is opened, and the adsorption force F 1 =k 1 ⋅P 1 ⋅A, P 1 is the negative pressure required for single-seed adsorption, k 1 is the correction coefficient, and A is the cross-sectional area of the suction port;

[0026] In the double-seed mode, time-sharing adsorption is adopted. First, the air pipe A9 is started, and after a delay of 0.1 - 0.3 s, the air pipe B10 is started to avoid seed collision; the dynamic adjustment formula of the adsorption force is as follows:

[0027] ;

[0028] wherein, A is the cross-sectional area of the suction port, k 1 = 1.2 - 1.5, k 2 = 0.8 - 1.0.

[0029] As a further solution of the present invention: the jet timing of the multi-functional air outlet unit satisfies:

[0030] S1. During the period when the two suction nozzles are inserted into the soil, the inclined air outlet hole 18 is closed;

[0031] S2. When the two suction nozzles rise by 5 mm, the low-speed cleaning air flow Q 1 is started and lasts for 1.5 s;

[0032] S3. After the two suction nozzles are completely separated from the soil, the high-speed pulsed air flow Q 2 is triggered for soil sealing, and the pulse width:

[0033] ;

[0034] wherein, D is the hole diameter, v soil is the soil flow velocity, and β = 0.8 - 1.2;

[0035] S4. After the pressure detector detects that the horn-shaped guide cylinder is completely separated from the soil, the lifting device is controlled to drive the two suction nozzles to move downward, and the high-speed pulsed air flow Q 2 is used to clean the suction nozzles. After 2 s of cleaning, the inclined air outlet hole is automatically closed, and the two suction nozzles are moved upward to return to their original positions.

[0036] As a further solution of the present invention: it further includes: a guide groove, which is opened on the side wall of the dibbling square frame;

[0037] A limit moving block, which is fixedly connected to the sowing adjustment groove frame, and the limit moving block is also inserted into the guide groove and is slidably connected to the guide groove;

[0038] A spacing adjustment lock body, one end of which is fixedly connected to the limit moving block;

[0039] And a positioning lock buckle plate, one end of which is fixedly connected to the adjacent limit moving block, and the other end of the positioning lock buckle plate is slidably connected to the spacing adjustment lock body.

[0040] As a further solution of the present invention: it further includes: a spacing detector, which is fixedly installed on the side wall of the sowing adjustment groove frame and is electrically connected to the intelligent pneumatic adsorption system.

[0041] Compared with the prior art, the beneficial effects of the present invention are:

[0042] When the intelligent pneumatic adsorption system is started, negative pressure will be generated at the first nozzle and the second nozzle, so that one or two seeds in the horn-shaped guide cylinder can be adsorbed. Among them, under the enclosure of the horn-shaped guide cylinder, a containing space is formed, and in the later stage of dibbling, even when there are fewer pepper seeds on the tray, the seeds can still be quickly adsorbed, solving the problems of difficult adsorption and seed positioning, especially when the amount of seeds is small;

[0043] Under the control of the intelligent pneumatic adsorption system, the adsorption mode of single or double seeds can be realized. In the single-seed mode, only the first nozzle is opened. If the air pressure at a certain part is detected to be less than the set threshold, it is determined that the suction is missed, and then the adsorption force is increased to perform supplementary suction. In the double-seed mode, time-sharing adsorption is adopted. The first nozzle is started first, and the second nozzle is started after a delay of 0.1-0.3 s to avoid seed collision;

[0044] After the chili seeds are adsorbed, the whole device is manually moved above the seedling bed, and the whole device is lowered until the bottom end of the trumpet-shaped flow guide tube contacts the soil on the seedling bed. At this time, under the control of the intelligent pneumatic adsorption system, the lifting device is started, and the protective cylinder and the dibbling cone are pushed down. Finally, single or double seeds enter the specified depth position in the soil. And under the control of the intelligent pneumatic adsorption system, when the two suction nozzles rise to a certain height, the tube wall of the dibbling cone is cleaned by low-speed air flow. After the two suction nozzles are completely separated from the soil, a high-speed pulsed air flow is triggered to seal the soil at the part where the chili seeds are buried. Among them, when the dibbling cone is pulled out from the soil, the soil where the seeds are buried forms a hole, and under the friction action, the soil accumulates around the hole. Finally, under the action of air flow pushing pressure, the preliminary burial of the seeds is realized to avoid exposure to the external space. Subsequently, manual pressing and other treatments can be carried out according to the situation of the preliminary burial;

[0045] The operation of the present invention is simple. It can not only realize the rapid switching between single-seed or double-seed dibbling modes, be applicable to more complex dibbling scenarios, but also ensure that the seeds are smoothly buried in the specified depth position, promptly bury the seeds, ensure the survival rate of the seeds, and can realize the automatic cleaning of the dibbling cone, which provides convenience for the staff. Brief Description of the Drawings

[0046] Figure 1 It is a three-dimensional structural schematic diagram of the dibbling square frame in the embodiment of the present invention.

[0047] Figure 2 It is a three-dimensional structural schematic diagram of the distribution of the sowing adjustment groove frame in the embodiment of the present invention.

[0048] Figure 3 It is a three-dimensional structural schematic diagram of the positioning lock buckle plate in the embodiment of the present invention.

[0049] Figure 4 It is a three-dimensional structural schematic diagram of the limit moving block in the embodiment of the present invention.

[0050] Figure 5 It is a three-dimensional structural schematic diagram of the distribution of the trumpet-shaped flow guide tube in the embodiment of the present invention.

[0051] Figure 6 It is a partial cross-sectional structural schematic diagram of the lifting linkage plate in the embodiment of the present invention.

[0052] Figure 7 It is a three-dimensional structural schematic diagram of the dibbling cone in the embodiment of the present invention.

[0053] Figure 8 It is a three-dimensional structural schematic diagram of the lifting chute in the embodiment of the present invention.

[0054] Figure 9This is a schematic cross-sectional view of the communication channel in the embodiment of the present invention.

[0055] Figure 10 This is a three-dimensional structure schematic diagram of the protective cylinder in the embodiment of the present invention.

[0056] Figure 11 This is a schematic bottom view of the trumpet-shaped guide cylinder in the embodiment of the present invention.

[0057] In the figure: 1 - square seeding frame, 2 - air flow control system, 3 - seeding adjustment trough frame, 4 - limit moving block, 5 - guide groove, 6 - handle, 7 - spacing detector, 8 - trumpet-shaped guide cylinder, 9 - air pipe A, 10 - air pipe B, 11 - air pipe C, 12 - spacing adjustment lock body, 13 - positioning lock buckle plate, 14 - height detector 1, 15 - lifting linkage plate, 16 - protective cylinder, 17 - pressure detector, 18 - inclined air outlet hole, 19 - seeding cone, 20 - suction nozzle 1, 21 - suction nozzle 2, 22 - lifting chute, 23 - annular guide hole, 24 - limit slide rail, 25 - height detector 2, 26 - communication channel. Detailed implementation manners

[0058] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0059] The following describes the specific implementation of the present invention in detail in conjunction with specific embodiments.

[0060] Please refer to Figures 1-11 , a pepper seedling bed seeding device provided by an embodiment of the present invention includes a square seeding frame 1, and a plurality of seeding adjustment trough frames 3 are arranged on the square seeding frame 1;

[0061] A plurality of trumpet-shaped guide cylinders 8 are arranged on each seeding adjustment trough frame 3, a protective cylinder 16 is inserted in each trumpet-shaped guide cylinder 8, the protective cylinder 16 is slidably connected with the trumpet-shaped guide cylinder 8, and a seeding cone 19 is arranged at the bottom end of the protective cylinder 16;

[0062] A suction nozzle 1 20 and a suction nozzle 2 21 are arranged on the seeding cone 19;

[0063] A lifting device for driving the protective cylinder 16 to move is arranged in the seeding adjustment trough frame 3, and an intelligent pneumatic adsorption system for seeding single or double pepper seeds through the suction nozzle 1 20 and the suction nozzle 2 21 is further arranged on the seeding adjustment trough frame 3.

[0064] When sowing pepper seeds in holes on the seedling bed, first, the whole device can be lifted by the staff through the handle 6 set on the sowing square frame 1 and placed in a container for holding pepper seeds. The container is in the form of a tray-like, and the pepper seeds are laid flat in the tray. After multiple trumpet-shaped flow guide cylinders 8 contact the bottom of the container, there are several pepper seeds in each trumpet-shaped flow guide cylinder 8 (or multiple grooves can be set in the tray, and pepper seeds are placed in each groove. The number and distribution positions of the grooves are the same as those of the multiple trumpet-shaped flow guide cylinders 8). At this time, when the intelligent pneumatic adsorption system is started, negative pressure will be generated at the suction nozzle one 20 and the suction nozzle two 21, so that one or two seeds in the trumpet-shaped flow guide cylinder 8 can be adsorbed (under the enclosure of the trumpet-shaped flow guide cylinder 8, a containing space is formed. In the later stage of sowing, even when there are fewer pepper seeds on the tray, the seeds can still be quickly adsorbed, solving the problems of difficult adsorption and seed positioning, especially when the amount of seeds is small). In addition, under the control of the intelligent pneumatic adsorption system, the mode of adsorbing single or double seeds can be realized. In the single-seed mode, only the suction nozzle one 20 is opened. If the air pressure at a certain part is detected to be less than the set threshold value, it is determined that the suction is missed, and then the adsorption force is increased to make up the suction. In the double-seed mode, time-sharing adsorption is adopted. First, the suction nozzle one 20 is started, and after a delay of 0.1 - 0.3 s, the suction nozzle two 21 is started to avoid seed collision. After the pepper seeds are adsorbed, the whole device is manually moved above the seedling bed, and the whole device is lowered until the bottom end of the trumpet-shaped flow guide cylinder 8 contacts the soil on the seedling bed. At this time, under the control of the intelligent pneumatic adsorption system again, the lifting device is started, and the protection cylinder 16 and the sowing cone 19 are pushed down, and finally the single or double seeds enter the specified depth position in the soil. And under the control of the intelligent pneumatic adsorption system, when the two suction nozzles rise to a certain height, the wall of the sowing cone 19 is cleaned by low-speed air flow. After the two suction nozzles are completely separated from the soil, high-speed pulsed air flow is triggered to seal the soil at the position where the pepper seeds are buried. Among them, when the sowing cone 19 is pulled out from the soil, a hole will be formed in the soil where the seeds are buried, and under the friction action, the soil will accumulate around the hole. Finally, under the pushing action of the air flow, the initial burial of the seeds is realized, avoiding exposure to the external space. Subsequently, manual pressing and other treatments can be carried out according to the situation of the initial burial, which will not be elaborated here. The operation is simple. It can not only realize the quick switching between the single-seed and double-seed sowing modes, be applicable to more complex sowing scenarios, but also ensure that the seeds are smoothly buried in the specified depth position, timely bury the seeds, ensure the survival rate of the seeds, and can realize the automatic cleaning of the sowing cone 19, providing convenience for the staff.

[0065] In an embodiment of the present invention, please refer to Figures 1-11, the lifting device includes a driving member and a lifting linkage plate 15, and the driving member is located within the seeding adjustment trough frame 3;

[0066] The lifting linkage plate 15 is connected to the output end of the driving member, is connected to a plurality of the protective cylinders 16, and the lifting linkage plate 15 is further slidably connected to the inner wall of the seeding adjustment trough frame 3.

[0067] It further includes: a lifting chute 22, which is opened on the inner wall of the trumpet-shaped flow guiding cylinder 8;

[0068] and a limit slide rail 24, the limit slide rail 24 is fixedly connected to the protective cylinder 16, and the height detector 14 is further clamped and slidably connected to the lifting chute 22.

[0069] When it is necessary to drive the dibbling cone 19 to move upward or downward, the driving member is started. Among them, the driving member is an electric or pneumatic telescopic rod, which is used to push or pull the lifting linkage plate 15 to move upward or downward within the seeding adjustment trough frame 3, so as to drive all the protective cylinders 16 on one seeding adjustment trough frame 3 to move up and down synchronously, and finally realize the dibbling operation of the dibbling cone 19 inserting into and withdrawing from the soil. During the up and down movement of the protective cylinder 16, the limit slide rail 24 will slide up and down within the lifting chute 22, thereby playing a role in limiting and ensuring the stable up and down movement of the protective cylinder 16 and the dibbling cone 19.

[0070] In an embodiment of the present invention, please refer to Figures 1-11 , the intelligent pneumatic adsorption system includes an air pipe A9, an air pipe B10, an air pipe C11 and an air flow control system 2;

[0071] An air pipe A9, an air pipe B10 and an air pipe C11 are respectively arranged in each seeding adjustment trough frame 3. Among them, the air pipe A9 and the air pipe B10 are respectively communicated with the first suction nozzle 20 and the second suction nozzle 21, and the air pipe C11 is communicated with a multi-functional air outlet unit arranged on the seeding adjustment trough frame 3;

[0072] and a plurality of the air pipes A9, air pipes B10 and air pipes C11 are all communicated with an external air source through the air flow control system 2, and control valves are arranged on a plurality of the air pipes A9, air pipes B10 and air pipes C11;

[0073] The intelligent pneumatic adsorption system further includes a detection unit, and the detection unit is respectively connected to the seeding adjustment trough frame 3 and the protective cylinder 16.

[0074] In an embodiment of the present invention, the detection unit includes:

[0075] Height detector 14, which is fixedly installed on the bottom wall of the seeding adjustment trough frame 3 and electrically connected to the air flow control system 2;

[0076] And height detector 25, which is connected to the communication channel 26, and the height detector 25 is also electrically connected to the air flow control system 2 and the multi-functional air outlet unit respectively.

[0077] The multi-functional air outlet unit includes:

[0078] Communication channel 26, which is opened on the seeding adjustment trough frame 3;

[0079] Annular diversion holes 23, which are opened on the seeding adjustment trough frame 3 and communicate with the communication channel 26, and a plurality of inclined air outlet holes 18 are evenly distributed on the inner wall of the seeding adjustment trough frame 3, and the plurality of inclined air outlet holes 18 are all communicated with the annular diversion holes 23;

[0080] And pressure detector 17, which is located at the bottom end of the seeding adjustment trough frame 3 and electrically connected to the air flow control system 2.

[0081] In the processes of adsorption, dibbling, soil covering, and cleaning of pepper seeds by the action of air flow, first, the air flow control system 2 will open the control valves on the air pipe A9 or the air pipe B10, and the external air source will suck the air pipe A9 or the air pipe B10. Among them, the external air source can adopt the form of an air pump that can be used for both suction and inflation, so as to generate negative pressure at the suction nozzle 1 or the suction nozzle 2, thereby completing the adsorption of the seeds. Then, the height detector 1 judges whether the horn-shaped guide cylinder 8 is in contact with the soil by detecting the height. After contact, the driving member is started to drive the dibbling cone 19 to insert into the soil. At the same time, after the height detector 2 detects that the suction nozzle 1 and the suction nozzle 2 reach the specified depth, it controls the air pipe A9 and the air pipe B10 to be closed. After the seeds lose the negative pressure effect, it is convenient for the seeds to stay in the soil at the specified depth during the upward movement of the dibbling cone 19. At the same time, during the upward movement of the dibbling cone 19, under the detection of the height detector 2, when it moves up to the specified height, under the linkage control of the pressure detector 17 (only when the horn-shaped guide cylinder 8 exerts a certain pressure on the soil, the pressure detector 17 will start and link the control valve on the subsequent air pipe C11 to open, so as to make the space to be covered with soil in a relatively airtight environment, and avoid soil splashing while ensuring the smooth burial of the seeds), the control valve on the air pipe C11 will be opened, and low-speed air blowing will be carried out in the air pipe C11. The air flow will enter the plurality of inclined air outlets 18 through the communication channel 26 and the annular guide holes 23, so as to clean the outer wall of the dibbling cone 19 during the upward movement and avoid affecting the soil from accumulating around the acupoint. After the suction nozzle 1 and the suction nozzle 2 are completely separated from the soil, under the control of the height detector 2, high-speed pulsed air flow will be triggered for soil covering. After the dibbling is completed, when the horn-shaped guide cylinder 8 moves upward later, when the pressure detector 17 detects that the bottom end of the horn-shaped guide cylinder 8 is completely separated from the soil, the control lifting device can be controlled to drive the two suction nozzles (i.e., the suction nozzle 1 and the suction nozzle 2) to move downward, and high-speed pulsed air flow is used to clean the two suction nozzles. After cleaning for 2 s, the inclined air outlets 18 are automatically closed, and the two suction nozzles move upward to return to their original positions. Thus, a dibbling operation is completed. After the two suction nozzles return to their original positions, preparations are made for the next dibbling operation.

[0082] In an embodiment of the present invention, the air flow control system 2 adjusts the opening and closing of the control valve and the negative pressure intensity according to the dibbling mode (single grain or double grain), where:

[0083] In the single-grain mode, only the air pipe A9 is opened, and the adsorption force F1 = k 1 ⋅P 1 ⋅A, P 1 is the negative pressure required for single-grain adsorption, k 1 is the correction coefficient, A is the cross-sectional area of the suction port. In addition, a sensor for detecting air pressure can be set on the system. If P is detected1 When it is less than the set value, it is determined as suction leakage. At this time, after triggering the increase of the adsorption force, supplementary suction is carried out;

[0084] In the double-seed mode, time-sharing adsorption is adopted. First, the air pipe A9 is started, and after a delay of 0.1 - 0.3 s, the air pipe B10 is started to avoid seed collision; the dynamic adjustment formula of the adsorption force is as follows:

[0085] ;

[0086] where A is the cross-sectional area of the suction port, k 1 = 1.2 - 1.5, k 2 = 0.8 - 1.0.

[0087] In an embodiment of the present invention, the jet timing of the multi-functional air outlet unit satisfies:

[0088] S1. During the period when the two suction nozzles are inserted into the soil, the inclined air outlet 18 is closed; to avoid the seeds from falling off under the action of turbulent flow during the downward movement of the first suction nozzle 20 and the second suction nozzle 21.

[0089] S2. When the two suction nozzles rise to a height of 5 mm, the low-speed cleaning air flow Q 1 is started and lasts for 1.5 s;

[0090] S3. After the two suction nozzles are completely separated from the soil, the high-speed pulsed air flow Q 2 is triggered for soil sealing, and the pulse width:

[0091] ;

[0092] where D is the hole diameter (i.e., the maximum outer diameter of the dibbling cone 19), v soil is the soil flow velocity, and β = 0.8 - 1.2;

[0093] S4. After the pressure detector 17 detects that the trumpet-shaped guide cylinder 8 is completely separated from the soil, the lifting device is controlled to drive the two suction nozzles to move downward, and the high-speed pulsed air flow Q 2 is used to clean the suction nozzles. After cleaning for 2 s, the inclined air outlet 18 is automatically closed, and the two suction nozzles are moved upward to return to their original positions.

[0094] In an embodiment of the present invention, please refer to Figures 1-11 , it further includes: a guide groove 5, and the guide groove 5 is opened on the side wall of the dibbling square frame 1;

[0095] a limit moving block 4, the limit moving block 4 is fixedly connected to the sowing adjustment groove frame 3, and the limit moving block 4 is also inserted into the guide groove 5 and is slidably connected to the guide groove 5;

[0096] The spacing adjustment lock body 12, one end of the spacing adjustment lock body 12 is fixedly connected to the limit moving block 4;

[0097] And a positioning lock buckle plate 13, one end of the positioning lock buckle plate 13 is fixedly connected to the adjacent limit moving block 4, and the other end of the positioning lock buckle plate 13 is slidably connected to the spacing adjustment lock body 12.

[0098] In an embodiment of the present invention, it further includes: a spacing detector 7, the spacing detector 7 is fixedly installed on the side wall of the sowing adjustment trough frame 3 and is electrically connected to the intelligent pneumatic adsorption system.

[0099] For a specific dibbling scenario, for example, when the quality and type of seeds are exactly the same, when the acupoint spacing of the dibbled seeds is relatively large (greater than 20 cm), usually a double-seed dibbling mode needs to be adopted to ensure the survival rate or for subsequent double-plant cultivation. At this time, multiple sowing adjustment trough frames 3 with a fixed and single distribution are difficult to meet the requirements. Therefore, through the cooperation of the set limit moving block 4 and the guide groove 5, before the dibbling operation, the distance between two adjacent sowing adjustment trough frames 3 can be manually adjusted to reach the specified dibbling spacing (greater than 20 cm). At this time, under the detection of the spacing detector 7, the air flow control system 2 can be directly controlled to perform the automatic double-seed dibbling mode without manual setting, thereby improving the efficiency of the dibbling operation. At the same time, the spacing detector 7 can also detect and judge whether the spacing between adjacent sowing adjustment trough frames 3 changes during the dibbling process to ensure the accuracy of the dibbling spacing. In addition, through the cooperation of the set spacing adjustment lock body 12 and the positioning lock buckle plate 13, among them, the spacing adjustment lock body 12 can adopt a plate-like structure and a sliding column is provided at the end, and the sliding column is inserted into the notch provided on the positioning lock buckle plate 13. When the adjacent sowing adjustment trough frames 3 move away from each other, the sliding column will slide in the notch until the sliding column contacts the end of the notch, thereby restricting the continuous increase of the spacing between the adjacent sowing adjustment trough frames 3 and further ensuring that the dibbling spacing of the pepper seeds is constant and accurate. Details are not described in too much here.

[0100] It should be noted that in the present invention, unless otherwise clearly specified and limited, terms such as "sliding", "rotating", "fixing", "provided with" should be understood in a broad sense. For example, it can be a welded connection, a bolt connection, or integrated; it can be a mechanical connection, an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the internal communication of two components or the interaction relationship between two components, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0101] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only includes an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A pepper seeding bed on-demand device, comprising a square on-demand frame (1), characterized in that: The square sowing frame (1) is provided with a plurality of sowing adjustment slot frames (3); Each of the sowing adjustment slot frames (3) is provided with a plurality of trumpet-shaped flow guide cylinders (8), each of the trumpet-shaped flow guide cylinders (8) is inserted with a protective cylinder (16), the protective cylinder (16) is slidably connected to the trumpet-shaped flow guide cylinder (8), and a sowing cone (19) is provided at the bottom end of the protective cylinder (16); The on-demand cone (19) is provided with a first suction nozzle (20) and a second suction nozzle (21); The sowing adjustment slot frame (3) is provided with a lifting device for driving the protective tube (16) to move, and the sowing adjustment slot frame (3) is also provided with an intelligent pneumatic adsorption system for sowing single or double pepper seeds via suction nozzle 1 (20) and suction nozzle 2 (21).

2. The pepper seeding device according to claim 1, characterized in that: The lifting device comprises a driving member and a lifting linkage plate (15), wherein the driving member is located in the sowing adjustment slot frame (3); The lifting linkage plate (15) is connected to the output end of the driving member and to the plurality of protective tubes (16), and the lifting linkage plate (15) is also slidably connected to the inner wall of the sowing adjustment slot frame (3).

3. The pepper seeding device according to claim 1, characterized in that: Also includes: A lifting chute (22), wherein the lifting chute (22) is provided on the inner wall of the trumpet-shaped guide tube (8); And a limiting slide rail (24), wherein the limiting slide rail (24) is fixedly connected to the protective tube (16), and the height detector 1 (14) is also connected to the lifting slide groove (22) in a card-mounted sliding connection.

4. The pepper seeding device according to any one of claims 1 to 3, characterized in that: The intelligent pneumatic adsorption system comprises an air pipe A (9), an air pipe B (10), an air pipe C (11) and an airflow control system (2); Each of the seeding and adjusting slot frames (3) is provided with an air pipe A (9), an air pipe B (10) and an air pipe C (11), wherein the air pipe A (9) and the air pipe B (10) are respectively connected to the suction nozzle 1 (20) and the suction nozzle 2 (21), and the air pipe C (11) is connected to a multifunctional air outlet unit provided on the seeding and adjusting slot frame (3); The plurality of air pipes A (9), air pipes B (10) and air pipes C (11) are all connected to an external air source through an air flow control system (2), and the plurality of air pipes A (9), air pipes B (10) and air pipes C (11) are all provided with control valves; The intelligent pneumatic adsorption system also includes a detection unit, which is connected to the sowing adjustment slot frame (3) and the protective tube (16) respectively.

5. The pepper seeding device according to claim 4, characterized in that: The detection unit comprises: A height detector (14), the height detector (14) is fixedly mounted on the bottom wall of the sowing adjustment slot frame (3) and is electrically connected to the airflow control system (2); and a second height detector (25), wherein the second height detector (25) is connected to the communication channel (26), and the second height detector (25) is also electrically connected to the airflow control system (2) and the multifunctional air outlet unit, respectively.

6. The pepper seeding device according to claim 5, characterized in that: The multifunctional air outlet unit comprises: A communication channel (26), wherein the communication channel (26) is provided on the sowing adjustment channel frame (3); an annular guide hole (23), the annular guide hole (23) being opened on the sowing adjustment slot frame (3) and being connected to the connecting channel (26), and a plurality of inclined air outlet holes (18) being evenly distributed on the inner wall of the sowing adjustment slot frame (3), and the plurality of inclined air outlet holes (18) being all connected to the annular guide hole (23); and a pressure detector (17), wherein the pressure detector (17) is located at the bottom end of the sowing adjustment slot frame (3) and is electrically connected to the airflow control system (2).

7. The pepper seedling bed on-demand device according to claim 6, characterized in that: The airflow control system (2) adjusts the opening and closing of the control valve and the negative pressure intensity according to the on-demand mode, wherein: In the single-particle mode, only the air pipe A (9) is opened, and the adsorption force F1 = k1⋅P1⋅A, where P1 is the negative pressure required for single-particle adsorption, k1 is the correction coefficient, and A is the cross-sectional area of ​​the suction port; In the double-grain mode, time-sharing adsorption is adopted. Air pipe A (9) is started first, and air pipe B (10) is started after a delay of 0.1-0.3s to avoid seed collision. The dynamic adjustment formula of adsorption force is as follows: ； Among them, A is the cross-sectional area of ​​the suction port, k1=1.2-1.5, k2=0.8-1.

0.

8. The pepper seeding device according to claim 1 or 3, characterized in that: The jet timing of the multifunctional air outlet unit satisfies: S1, while the two suction nozzles are inserted into the soil, the inclined air outlet (18) is closed; S2, when the two nozzles rise to a height of 5 mm, start the low-speed cleaning airflow Q1 and last for 1.5 seconds; S3. After the two suction nozzles are completely separated from the soil, the high-speed pulse airflow Q2 is triggered to seal the soil. The pulse width is: ； Where D is the hole diameter, v soil is the soil flow velocity, β=0.8-1.2; S4. After the pressure detector (17) detects that the trumpet-shaped guide tube (8) is completely separated from the soil, the lifting device is controlled to move the two suction nozzles downward, and the suction nozzles are cleaned using a high-speed pulse airflow Q2. After cleaning for 2 seconds, the inclined air outlet (18) is automatically closed, and the two suction nozzles are moved upward to return to their original positions.

9. The pepper seeding device according to claim 8, characterized in that: Also includes: A guide groove (5), wherein the guide groove (5) is provided on a side wall of the on-demand square frame (1); A limit moving block (4), wherein the limit moving block (4) is fixedly connected to the sowing adjustment slot frame (3), and the limit moving block (4) is also inserted into the guide slot (5) and is slidably connected to the guide slot (5); A spacing adjustment lock body (12), one end of which is fixedly connected to the limit moving block (4); And a positioning lock plate (13), one end of the positioning lock plate (13) is fixedly connected to the adjacent limiting movable block (4), and the other end of the positioning lock plate (13) is slidably connected to the spacing adjustment lock body (12).

10. The pepper seeding device according to claim 9, characterized in that: Also includes: A spacing detector (7), wherein the spacing detector (7) is fixedly mounted on a side wall of the sowing adjustment slot frame (3) and is electrically connected to the intelligent pneumatic adsorption system.

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