A method for rapid detection of seeds in soil seed bank suitable for rice field

Abstract

The application discloses a kind of soil seed bank seed rapid measurement methods suitable for rice field, comprising the following steps: soil sampling is carried out in rice field, and the soil after sampling is filtered;The filtered soil is placed in the inside of screening mechanism and waits for screening;The soil in the inside of screening mechanism is centrifugally screened by rotating mechanism driving screening mechanism rotation;The reciprocating movement of up and down of rotating screening mechanism is driven by lifting mechanism to accelerate screening.The application utilizes the setting of screening mechanism and rotating mechanism, and then cooperates with lifting mechanism, so that the placement tube rotates while reciprocating, so that the soil in the inside of placement tube has the tendency of moving away from the center of rotating disc, so that the soil will be screened by multiple screens under the action of centrifugal force, which applies a larger centrifugal force to the soil, and the reciprocating lifting of placement tube increases the fluidity, thereby increasing the screening efficiency of soil.

Description

Technical Field

[0001] The invention relates to the technical field of seed screening, and in particular to a method for rapid seed testing in a soil seed bank suitable for paddy fields. Background Art

[0002] The types and quantities of weed seeds in the farmland weed seed bank determine the amount of weeds that will occur in the farmland during the next cropping. However, the investigation of the types and quantities of weed seeds in the weed seed bank is not only tedious and labor-intensive, but has also been seldom carried out in actual research and application. Usually, the types and quantities of weed seeds in the farmland seed bank are identified and measured by directly separating the weed seeds from the soil, or by spreading the soil containing the seeds on a tray to allow the seeds to germinate, and then indirectly identifying and measuring the types and quantities of the weed seedlings after germination. The above methods all have the characteristics of large workload, long time consumption and certain errors. Therefore, during the planting process of rice fields, the seeds in the soil are separated and then monitored. However, seed separation is a very tedious process, and multi-stage screening is required to screen seeds of different varieties as much as possible.

[0003] For example, in the Chinese patent with application number 202221030403.7 and name of agricultural cultivation multi-stage seed screening equipment, sieve plate 1 3, sieve plate 2 4 and sieve plate 3 5 are sequentially arranged in the box body 1, and the seeds are injected into the box body 1 through the feed port 2, and then screened through the sieve plate 1 3, sieve plate 2 4 and sieve plate 3 5. However, during the screening process, when the seeds pass through the apertures of sieve plate 1 3, sieve plate 2 4 and sieve plate 3 5, they mostly rely on the weight of the seeds themselves, but the seeds are very light, and it is difficult to increase the fluidity of the seeds even by vibration, resulting in poor screening effect of the seeds on sieve plate 1 3, sieve plate 2 4 and sieve plate 3 5, and incomplete screening. For this reason, we propose a rapid seed testing method for soil seed banks suitable for rice fields that can increase screening efficiency. Summary of the Invention

[0004] The object of the present invention is to provide a method for rapid seed testing in a soil seed bank suitable for paddy fields, so as to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solution: a method for rapid seed testing in a soil seed bank suitable for paddy fields, comprising the following steps:

[0006] Step 1: Soil sampling is carried out in the rice fields, and the sampled soil is filtered to remove various impurities such as stones in the soil;

[0007] Step 2: Place the filtered soil into the screening mechanism and wait for screening;

[0008] Step three: the soil in the inside of the screening mechanism is centrifugally screened by rotating the screening mechanism through the rotating mechanism, so that seeds of different particle sizes are separated;

[0009] Step four: the rotating screening mechanism is reciprocally moved up and down through the lifting mechanism to accelerate the screening.

[0010] Preferably, the rotating mechanism comprises a base and a rotating disc, the top end of the base is provided with a placing groove, the rotating disc is rotatably arranged in the inside of the placing groove, the screening mechanism is provided with multiple groups, the screening mechanism comprises a placing pipe and multiple screens, the placing pipe is arranged at the top end of the rotating disc, multiple connecting rings are arranged at the inner wall of the placing pipe at intervals, multiple screens are respectively arranged at the middle parts of the multiple connecting rings, a clamping mechanism is arranged between the placing pipe and the rotating disc, and the lifting mechanism is arranged between the bottom end of the rotating disc and the inner wall of the placing groove.

[0011] The soil in the inside of the placing pipe has a tendency to move away from the center of the rotating disc through the rotating of the placing pipe by the rotating mechanism, so that the soil is screened through the multiple screens under the action of the centrifugal force, and this screening mode applies a larger centrifugal force to the soil, thereby accelerating the screening efficiency of the soil.

[0012] Preferably, two first connecting rods are fixedly connected between two adjacent connecting rings, a second connecting rod is fixedly connected to one side of the connecting ring at the bottle opening of the placing pipe, one end of the second connecting rod is fixedly connected with a snap ring, and the end of the placing pipe is threadedly sleeved with a sealing cover.

[0013] The outer diameter of the snap ring is greater than the inner diameter of the placing pipe, so that the multiple connecting rings can be pulled out of the placing pipe by pulling the snap ring under the connection of the second connecting rod and the first connecting rod, thereby improving the convenience of the working of the screening mechanism.

[0014] Preferably, a clamping groove is formed in one side of the connecting ring, the side of the screen is clamped in the inside of the clamping groove, a first rubber ring is movably connected to the inner wall of the clamping groove, an annular groove is formed in the outer wall of the connecting ring, a second rubber ring is arranged in the annular groove, the outer wall of the second rubber ring is in interference fit with the inner wall of the placing pipe, and the specifications of multiple screen holes gradually decrease from 1.5mm x 1.0mm to 0.05mm x 0.05mm.

[0015] The side of the screen is clamped in the inside of the clamping groove through the first rubber ring, so that the screen is connected with the connecting ring, and the non-communication between two adjacent screens is increased through the arrangement of the second rubber ring, so that the soil components can only move through the screen.

[0016] Preferably, the clamping mechanism comprises a clamping cylinder fixedly connected to the top end of the rotating disc, the inside of the clamping cylinder is provided with a clamping plate, the placing pipe is penetratingly arranged in the inside of the clamping cylinder, the top end of the clamping cylinder is provided with a threaded hole, the inner wall of the threaded hole is threadedly connected with a bolt, the bottom end of the bolt is rotatably connected with the top end of the clamping plate, the top end of the clamping cylinder is provided with a plurality of limiting holes, the inner walls of the plurality of limiting holes are movably and penetratingly connected with limiting rods, the bottom ends of the plurality of limiting rods are fixedly connected with the top end of the clamping plate, and the bottom end of the rotating disc is provided with a driving mechanism.

[0017] By rotating the bolt in the threaded hole, the clamping plate can be lifted and lowered, so that the clamping plate can position the placing pipe in the clamping cylinder, ensuring the stable screening of the soil and avoiding the placing pipe from flying out during rotation.

[0018] Preferably, the driving mechanism comprises a servo motor, the bottom end of the rotating disc is fixedly connected with a movable rod, the bottom end of the inner wall of the rotating disc is provided with a first movable hole, the bottom end of the base is provided with a mounting cavity, the mounting cavity is in communication with the first movable hole, the servo motor is mounted on the inner wall of the mounting cavity, and the servo motor and the movable rod are provided with a connecting mechanism.

[0019] The servo motor works to drive the rotating disc to rotate, so that the placing pipe can revolve, improving the convenience and stability of the rotation of the rotating disc.

[0020] Preferably, the lifting mechanism comprises a bottom disc fixedly connected to the bottom end of the inner wall of the placing groove, the top end of the bottom disc is provided with a second movable hole, the outer wall of the movable rod is movably and penetratingly connected with the inner wall of the second movable hole, the side of the top end of the bottom disc is fixedly connected with an arc-shaped protrusion in a symmetrical manner, the bottom end of the rotating disc is fixedly connected with a supporting rod in a symmetrical manner, the bottom end of the supporting rod is provided with a first ball groove, the inner wall of the first ball groove is movably and clippably connected with a first rolling ball, the top end of the bottom disc and the top end of the arc-shaped protrusion are provided with a rolling way, and the first rolling ball is rolling arranged on the inner wall of the rolling way.

[0021] The side of the top end of the bottom disc and the top end of the arc-shaped protrusion guide the first rolling ball, so that the placing pipe can move up and down during rotation, so that the placing pipe can move up and down during revolution, further increasing the flowability of the soil components in the placing pipe and further improving the screening efficiency.

[0022] Preferably, the connecting mechanism comprises a clamping sleeve and a clamping rod, the output end of the servo motor is in transmission connection with the bottom end of the clamping sleeve, the top end of the clamping sleeve is provided with a clamping hole, the outer wall of the clamping rod is movably inserted into the inner wall of the clamping hole, the shape of the clamping rod matches that of the clamping hole, the top end of the clamping rod is fixedly connected with the bottom end of the movable rod, the outer wall of the clamping rod is provided with a plurality of second ball grooves, the inner wall of each of the second ball grooves is movably clamped with a second rolling ball, the outer wall of each of the second rolling balls is in abutment with the inner wall of the clamping hole, and the outer wall of the movable rod is provided with an elastic mechanism.

[0023] The clamping sleeve clamps the clamping rod, so that the rotation of the clamping sleeve can drive the rotation of the clamping rod, and the clamping rod can also be lifted and lowered in the clamping hole, so that the rotating disc can be stably lifted and lowered.

[0024] Preferably, the elastic mechanism comprises a fixed ring and a spring, the fixed ring is fixedly sleeved on the outer wall of the movable rod, the spring is arranged between the top end of the fixed ring and the inner wall of the mounting cavity, the spring is sleeved on the outer wall of the movable rod, and the top end of the spring is provided with an auxiliary mechanism.

[0025] The spring has a downward movement trend at all times through the elastic effect of the spring, so that the stability of the lifting of the placement tube is ensured.

[0026] Preferably, the auxiliary mechanism comprises a rotating ring, the top end of the inner wall of the mounting cavity is provided with a circular groove, the inner wall of the circular groove is movably inserted with a bearing, the rotating ring is movably inserted with the inner wall of the bearing, the rotating ring is sleeved on the outer wall of the movable rod, the bottom end of the rotating ring is fixedly connected with two positioning rods, the top end of the fixed ring is provided with two positioning holes, and the outer walls of the two positioning rods are movably inserted into the inner walls of the two positioning holes, respectively.

[0027] The positioning of the positioning rods by the positioning holes can drive the rotation of the rotating ring when the fixed ring rotates, that is, the rotation of the movable rod can drive the synchronous rotation of the spring, so that the phenomenon of self-rotation of the spring does not occur, and the stability of the work of the spring is improved.

[0028] Preferably, the method specifically comprises the following steps:

[0029] Step one: sampling the soil in the rice field, and filtering the sampled soil to remove various stones and impurities in the soil;

[0030] Step two: unscrew the sealing cover, pour the filtered soil into the placement tube, then screw the sealing cover on the outer wall of the placement tube, at this time, insert the placement tube into the clamping cylinder horizontally, and rotate the bolt to make the clamping plate descend and abut against the placement tube, so that the placement tube can be positioned.

[0031] Step three: open the external switch of the servo motor, the servo motor works to drive the sleeve to rotate, the sleeve rotates to drive the clamping rod to rotate, the clamping rod rotates to drive the movable rod to rotate, the movable rod rotates to drive the placement tube to rotate, so that the clamped placement tube rotates, under the action of centrifugal force, the soil in the placement tube has a tendency to move away from the center of the placement tube, so that the soil is filtered through the multiple screens, after filtering, the external switch of the servo motor is turned off, then the bolt is rotated in reverse, the clamping of the placement tube is released, then the sealing cover is unscrewed, the multiple connecting rings are removed, the seeds attached to the multiple screens are obtained, and the screening of the seeds is completed.

[0032] Technical effects and advantages of the present application:

[0033] The present application utilizes the setting of the screening mechanism and the rotating mechanism, and cooperates with the lifting mechanism, so that the placement tube rotates and reciprocatingly lifts at the same time, so that the soil in the placement tube has a tendency to move away from the center of the rotating disc, so that the soil is screened through the multiple screens under the action of centrifugal force, this screening method applies a larger centrifugal force to the soil, and the reciprocating lifting of the placement tube increases the fluidity, thereby increasing the screening efficiency of the soil. BRIEF DESCRIPTION OF DRAWINGS

[0034] Figure 1 It is a front view structure schematic diagram of the present application.

[0035] Figure 2 It is a front view structure schematic diagram of the present application Figure 1 .

[0036] Figure 3 It is a connecting ring explosion structure schematic diagram of the present application.

[0037] Figure 4 It is a front view structure schematic diagram of the present application Figure 1 .

[0038] Figure 5 It is a front view structure schematic diagram of the present application Figure 1 .

[0039] Figure 6 It is a sleeve three-dimensional structure schematic diagram of the present application.

[0040] Figure 7 It is a front view structure schematic diagram of the present application .

[0041] Figure 8 It is a side view structure schematic diagram of the present application .

[0042] In the figure: 101, base; 102, placing groove; 201, rotating disc; 202, placing pipe; 203, connecting ring; 204, screen; 301, first connecting rod; 302, second connecting rod; 303, snap ring; 304, sealing cover; 401, clamping groove; 402, first rubber ring; 403, annular groove; 404, second rubber ring; 501, clamping cylinder; 502, clamping plate; 503, threaded hole; 504, bolt; 505, limiting hole; 506, limiting rod; 601, first movable hole; 602, movable rod; 603, servo motor; 701, base plate; 702, arc-shaped protrusion; 703, second movable hole; 704, supporting rod; 705, first ball groove; 706, first rolling ball; 707, rolling way; 801, clamping sleeve; 802, clamping hole; 803, clamping rod; 804, second ball groove; 805, second rolling ball; 806, fixing ring; 807, spring; 808, circular groove; 809, bearing; 810, rotating ring; 811, positioning rod; 812, positioning hole. DETAILED DESCRIPTION

[0043] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0044] The present application provides a soil seed bank seed rapid detection method suitable for rice fields as shown in Figures 1-8 The present application provides a soil seed bank seed rapid detection method suitable for rice fields as shown in

[0045] Step one: soil sampling in the rice field, and filtering the sampled soil to remove various stones and impurities in the soil;

[0046] Step two: placing the filtered soil into the inside of the screening mechanism to wait for screening;

[0047] Step three: centrifugal screening of the soil in the inside of the screening mechanism by rotating the screening mechanism driven by the rotating mechanism to separate seeds of different particle sizes;

[0048] Step four: reciprocating up and down of the rotating screening mechanism driven by the lifting mechanism to accelerate screening

[0049] The rotating mechanism comprises a base 101 and a rotating disc 201, the top end of the base 101 is provided with a placing groove 102, the rotating disc 201 is rotationally arranged in the placing groove 102, the screening mechanism is provided with multiple groups, the screening mechanism comprises a placing pipe 202 and multiple screen meshes 204, the placing pipe 202 is arranged at the top end of the rotating disc 201, multiple connecting rings 203 are arranged at intervals on the inner wall of the placing pipe 202, the multiple screen meshes 204 are respectively arranged at the middle portions of the multiple connecting rings 203, a clamping mechanism is arranged between the placing pipe 202 and the rotating disc 201, and a lifting mechanism is arranged between the bottom end of the rotating disc 201 and the inner wall of the placing groove 102;

[0050] The placing pipe 202 is driven to rotate by the rotating mechanism, so that the soil in the placing pipe 202 has a tendency to move away from the center of the rotating disc 201, so that the soil is screened through the multiple screen meshes 204 under the action of centrifugal force, this screening method applies a larger centrifugal force to the soil, thereby accelerating the screening efficiency of the soil, the specifications of the holes of the multiple screen meshes 204 gradually decrease from the opening of the placing pipe 202 to the bottom of the bottle, and the specifications of the holes of the multiple screen meshes 204 gradually decrease from 1.5mm*1.0mm to 0.05mm*0.05mm;

[0051] Preferably, two first connecting rods 301 are fixedly connected between the two adjacent connecting rings 203, one side of the connecting ring 203 at the bottle opening of the placing pipe 202 is fixedly connected to two second connecting rods 302, one end of the two second connecting rods 302 is fixedly connected to a clamping ring 303, the end portion of the placing pipe 202 is threadedly sleeved with a sealing cover 304, the outer diameter of the clamping ring 303 is greater than the inner diameter of the placing pipe 202, so that the multiple connecting rings 203 can be pulled out of the placing pipe 202 by pulling the clamping ring 303 under the connection of the second connecting rod 302 and the first connecting rod 301, thereby improving the convenience of the working of the screening mechanism, the sealing cover 304 is tightened on the outer wall of the placing pipe 202 to prevent the soil in the placing pipe 202 from flowing out when the placing pipe 202 is square, and the multiple connecting rings 203 are pulled out through the clamping ring 303 after the filtration is completed;

[0052] Furthermore, a slot 401 is provided on one side of the connecting ring 203, and the side of the screen 204 is clamped inside the slot 401. A first rubber ring 402 is movably inserted and connected to the inner wall of the slot 401. An annular groove 403 is provided on the outer wall of the connecting ring 203, and a second rubber ring 404 is inserted into the inner wall of the annular groove 403. The outer wall of the second rubber ring 404 is interference fit with the inner wall of the placement tube 202. The side of the screen 204 is clamped inside the slot 401 by the first rubber ring 402, so that the screen 204 can be connected to the connecting ring 203. The provision of the second rubber ring 404 increases the disconnection between the two adjacent screens 204, so that the soil components can only move through the screen 204.

[0053] Furthermore, the clamping mechanism includes a clamping cylinder 501, which is fixedly connected to the top of the turntable 201, a clamping plate 502 is provided inside the clamping cylinder 501, and the placement tube 202 is inserted into the interior of the clamping cylinder 501, and a threaded hole 503 is provided at the top of the clamping cylinder 501, and a bolt 504 is threadedly connected to the inner wall of the threaded hole 503, and the bottom end of the bolt 504 is rotatably connected to the top of the clamping plate 502, and a plurality of limiting holes 505 are provided at the top of the clamping cylinder 501, and the inner walls of the plurality of limiting holes 505 are movably inserted and connected to the limiting rod 506, The bottom ends of the limiting rods 506 are fixedly connected to the top ends of the clamping plates 502. The bottom end of the turntable 201 is provided with a driving mechanism. By rotating the bolts 504 in the threaded holes 503, the clamping plates 502 can be driven to rise and fall, so that the clamping plates 502 can position the placement tubes 202 in the clamping cylinder 501, ensuring stable screening of the soil and preventing the placement tubes 202 from flying out during rotation. The limiting holes 505 limit the limiting rods 506, so that the clamping plates 502 will not rotate when they are raised and lowered, ensuring that the clamping plates 502 can stably clamp the placement tubes 202.

[0054] Preferably, the driving mechanism includes a servo motor 603, a movable rod 602 is fixedly connected to the bottom end of the turntable 201, a first movable hole 601 is opened at the bottom end of the inner wall of the turntable 201, and a mounting cavity is opened at the bottom end of the base 101, the mounting cavity is connected to the first movable hole 601, the servo motor 603 is installed on the inner wall of the mounting cavity, and a connecting mechanism is provided between the servo motor 603 and the movable rod 602. The servo motor 603 drives the turntable 201 to rotate, so that the placement tube 202 can revolve, thereby improving the convenience and stability of the rotation of the turntable 201. The servo motor 603 is electrically connected to the external power supply through an external switch, which is convenient for the operator to control the servo motor 603, thereby improving the safety and convenience of the operation of the servo motor 603.

[0055] Further, the lifting mechanism comprises a chassis 701 fixedly connected to the bottom end of the inner wall of the placing groove 102, a second movable hole 703 is formed in the top end of the chassis 701, the outer wall of the movable rod 602 is movably inserted into the inner wall of the second movable hole 703, arc-shaped protrusions 702 are symmetrically and fixedly connected to the side of the top end of the chassis 701, support rods 704 are symmetrically and fixedly connected to the bottom end of the rotating disc 201, a first ball groove 705 is formed in the bottom end of the support rod 704, a first rolling ball 706 is movably connected to the inner wall of the first ball groove 705, a rolling groove 707 is formed in the top end of the chassis 701 and the top end of the arc-shaped protrusion 702, and the first rolling ball 706 is rolling arranged on the inner wall of the rolling groove 707. The first rolling ball 706 is guided by the side of the top end of the chassis 701 and the top end of the arc-shaped protrusion 702, so that the placing pipe 202 can move up and down during rotation, so that the placing pipe 202 can move up and down during rotation. Further increase the flowability of the soil composition in the placing pipe 202, further improve the screening efficiency, and the cooperation of the first rolling ball 706 and the rolling groove 707 makes the lifting and rotating process of the placing pipe 202 more smooth.

[0056] Further, the connecting mechanism comprises a sleeve 801 and a clamping rod 803, the output end of the servo motor 603 is in transmission connection with the bottom end of the sleeve 801, a clamping hole 802 is formed in the top end of the sleeve 801, the outer wall of the clamping rod 803 is movably inserted into the inner wall of the clamping hole 802, the shape of the clamping rod 803 matches the shape of the clamping hole 802, the top end of the clamping rod 803 is fixedly connected with the bottom end of the movable rod 602, so that a plurality of second ball grooves 804 are formed in the outer wall of the clamping rod 803, a second rolling ball 805 is movably connected to the inner wall of each of the plurality of second ball grooves 804, and the outer wall of each of the plurality of second rolling balls 805 is in abutment with the inner wall of the clamping hole 802. The outer wall of the movable rod 602 is provided with an elastic mechanism. The sleeve 801 clamps the clamping rod 803, so that the rotation of the sleeve 801 can drive the rotation of the clamping rod 803, and the clamping rod 803 can also move up and down in the clamping hole 802, so that the rotating disc 201 can stably lift and lower. The second rolling ball 805 reduces the friction of the clamping rod 803 moving in the clamping hole 802.

[0057] Preferably, the elastic mechanism comprises a fixed ring 806 and a spring 807, the fixed ring 806 is fixedly sleeved on the outer wall of the movable rod 602, the spring 807 is arranged between the top end of the fixed ring 806 and the inner wall of the mounting cavity, the spring 807 is sleeved on the outer wall of the movable rod 602, and the top end of the spring 807 is provided with an auxiliary mechanism. Through the elastic action of the spring 807, the fixed ring 806 always has a downward movement tendency, thereby ensuring the stability of the lifting of the placing pipe 202.

[0058] Preferably, the auxiliary mechanism comprises a rotating ring 810, a circular groove 808 is arranged at the top end of the inner wall of the mounting cavity, bearings 809 are arranged on the inner wall of the circular groove 808, the rotating ring 810 is arranged on the inner wall of the bearings 809, the rotating ring 810 is sleeved on the outer wall of the movable rod 602, two positioning rods 811 are fixedly connected to the bottom end of the rotating ring 810, two positioning holes 812 are arranged at the top end of the fixed ring 806, the outer walls of the two positioning rods 811 are movably and penetratingly connected with the inner walls of the two positioning holes 812, the spring 807 is arranged between the rotating ring 810 and the fixed ring 806, the positioning rods 811 are limited by the positioning holes 812, so that the rotation of the fixed ring 806 can also drive the rotating ring 810 to rotate, that is, the rotation of the movable rod 602 can drive the spring 807 to rotate synchronously, and the phenomenon that the spring 807 rotates by itself does not occur, and the stability of the spring 807 in work is improved.

[0059] Preferably, the method specifically comprises the following steps:

[0060] Step one: soil sampling is performed in a rice field, and the sampled soil is filtered to remove various stones and impurities in the soil, the filter screen hole size for filtering impurities is 1.5mm*1.5mm, W-type five-point sampling method is used during sampling, and a cylindrical punch sampler with a height of 20cm and a diameter of 3cm is used for sampling;

[0061] Step two: unscrew the sealing cover 304, pour the filtered soil into the placement tube 202, then screw the sealing cover 304 on the outer wall of the placement tube 202, at this time, the placement tube 202 is inserted into the clamping cylinder 501 horizontally, and the clamping plate 502 is lowered to abut against the placement tube 202 by rotating the bolt 504, so that the placement tube 202 is positioned;

[0062] Step three: turn on the external switch of the servo motor 603, the servo motor 603 works to drive the sleeve 801 to rotate, the sleeve 801 rotates to drive the clamping rod 803 to rotate, the clamping rod 803 rotates to drive the movable rod 602 to rotate, the movable rod 602 rotates to drive the placement tube 202 to rotate, so that the clamped placement tube 202 rotates, under the action of centrifugal force, the soil in the placement tube 202 has a tendency to move away from the center of the placement tube 202, so that the soil is filtered through the multiple screens 204, after the filtering is completed, the external switch of the servo motor 603 is turned off, then the bolt 504 is reversely rotated to release the clamping of the placement tube 202, then the sealing cover 304 is unscrewed, the multiple connecting rings 203 are removed, and the seeds attached to the multiple screens 204 are obtained, so that the screening and speed measurement of the seeds are completed.

[0063] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A method for rapid seed testing in a soil seed bank suitable for paddy fields, characterized in that: The following steps are involved: Step 1: Soil sampling is carried out in the rice fields, and the sampled soil is filtered to remove various impurities such as stones in the soil; Step 2: Place the filtered soil into the screening mechanism and wait for screening; Step 3: The rotating mechanism drives the screening mechanism to rotate and centrifugally screen the soil inside the screening mechanism, so that seeds of different particle sizes are separated; Step 4: The lifting mechanism drives the rotating screening mechanism to move up and down to accelerate screening; The rotating mechanism includes a base (101) and a turntable (201), a placement groove (102) is provided at the top of the base (101), and the turntable (201) is rotatably arranged inside the placement groove (102). The screening mechanism is provided with multiple groups, and the screening mechanism includes a placement tube (202) and a plurality of screens (204). The placement tube (202) is arranged at the top of the turntable (201), and a plurality of connecting rings (203) are interspersed on the inner wall of the placement tube (202). The plurality of screens (204) are respectively arranged in the middle of the plurality of connecting rings (203). A clamping mechanism is provided between the placement tube (202) and the turntable (201), and the lifting mechanism is provided between the bottom end of the turntable (201) and the inner wall of the placement groove (102); The lifting mechanism comprises a chassis (701), the sides of the top of the chassis (701) are symmetrically fixedly connected with an arc-shaped protrusion (702), the bottom of the turntable (201) is symmetrically fixedly connected with a support rod (704), the bottom end of the support rod (704) is provided with a first ball groove (705), the inner wall of the first ball groove (705) is movably connected with a first rolling ball (706), the top of the chassis (701) and the top of the arc-shaped protrusion (702) are provided with a rolling track (707), and the first rolling ball (706) is rolled on the inner wall of the rolling track (707); Two first connecting rods (301) are fixedly connected between two adjacent connecting rings (203); one side of the connecting ring (203) located at the bottle mouth of the placement tube (202) is fixedly connected to two second connecting rods (302); one end of the two second connecting rods (302) is fixedly connected with a clamping ring (303); and a sealing cover (304) is provided on the end thread sleeve of the placement tube (202); A slot (401) is provided on one side of the connecting ring (203), and the side of the screen (204) is clamped inside the slot (401). A first rubber ring (402) is movably inserted and connected to the inner wall of the slot (401). An annular groove (403) is provided on the outer wall of the connecting ring (203), and a second rubber ring (404) is inserted and provided on the inner wall of the annular groove (403). The outer wall of the second rubber ring (404) is interference-fitted with the inner wall of the placement tube (202). The specifications of the holes of the plurality of screens (204) gradually decrease from 1.5 mm×1.0 mm to 0.05 mm×0.05 mm. The clamping mechanism includes a clamping cylinder (501), the clamping cylinder (501) is fixedly connected to the top of the turntable (201), a clamping plate (502) is arranged inside the clamping cylinder (501), the placement tube (202) is inserted into the inside of the clamping cylinder (501), a threaded hole (503) is opened at the top of the clamping cylinder (501), the inner wall of the threaded hole (503) is threadedly connected with a bolt (504), the bottom end of the bolt (504) is rotatably connected to the top of the clamping plate (502), a plurality of limiting holes (505) are opened at the top of the clamping cylinder (501), the inner walls of the plurality of limiting holes (505) are movably inserted and connected with limiting rods (506), the bottom ends of the plurality of limiting rods (506) are fixedly connected to the top of the clamping plate (502), and a driving mechanism is provided at the bottom end of the turntable (201).

2. A soil seed bank seed rapid testing method suitable for paddy fields according to claim 1, characterized in that: The driving mechanism comprises a servo motor (603), a movable rod (602) is fixedly connected to the bottom end of the turntable (201), a first movable hole (601) is provided at the bottom end of the inner wall of the turntable (201), a mounting cavity is provided at the bottom end of the base (101), the mounting cavity is communicated with the first movable hole (601), the servo motor (603) is mounted on the inner wall of the mounting cavity, and a connecting mechanism is provided between the servo motor (603) and the movable rod (602).

3. A soil seed bank seed rapid testing method suitable for paddy fields according to claim 2, characterized in that: The chassis (701) is fixedly connected to the bottom end of the inner wall of the placement groove (102), and a second movable hole (703) is opened at the top of the chassis (701). The outer wall of the movable rod (602) is movably connected to the inner wall of the second movable hole (703).

4. The method for rapid seed testing in a soil seed bank suitable for paddy fields according to claim 2, characterized in that: The connecting mechanism includes a clamping sleeve (801) and a clamping rod (803), the output end of the servo motor (603) is transmission-connected to the bottom end of the clamping sleeve (801), the top end of the clamping sleeve (801) is provided with a clamping hole (802), the outer wall of the clamping rod (803) is movably connected to the inner wall of the clamping hole (802), the shape of the clamping rod (803) matches the shape of the clamping hole (802), the top end of the clamping rod (803) is fixedly connected to the bottom end of the movable rod (602), so the outer wall of the clamping rod (803) is provided with a plurality of second ball grooves (804), the inner walls of the plurality of second ball grooves (804) are all movably clamped with second rolling balls (805), the outer walls of the plurality of second rolling balls (805) are all arranged to fit the inner wall of the clamping hole (802), and the outer wall of the movable rod (602) is provided with an elastic mechanism.

5. A soil seed bank rapid seed testing method suitable for paddy fields according to claim 4, characterized in that: The elastic mechanism comprises a fixed ring (806) and a spring (807), wherein the fixed ring (806) is fixedly sleeved on the outer wall of the movable rod (602), and the spring (807) is arranged between the top end of the fixed ring (806) and the inner wall of the installation cavity, and the spring (807) is sleeved on the outer wall of the movable rod (602), and an auxiliary mechanism is arranged at the top end of the spring (807).

6. A soil seed bank rapid seed testing method suitable for paddy fields according to claim 5, characterized in that: The auxiliary mechanism includes a rotating ring (810), a circular groove (808) is provided at the top end of the inner wall of the installation cavity, a bearing (809) is inserted into the inner wall of the circular groove (808), the inner wall of the rotating ring (810) is inserted into the inner wall of the bearing (809), the rotating ring (810) is sleeved on the outer wall of the movable rod (602), the bottom end of the rotating ring (810) is fixedly connected to two positioning rods (811), the top end of the fixed ring (806) is provided with two positioning holes (812), and the outer walls of the two positioning rods (811) are movably inserted and connected with the inner walls of the two positioning holes (812) respectively.

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