Crushing and sieving method and equipment for crop seedling cultivation soil

Abstract

The invention is suitable for smashing equipment, and provides a crop seedling cultivation soil smashing and sieving method and equipment, the crop seedling cultivation soil smashing and sieving method is based on the equipment, and the crop seedling cultivation soil smashing and sieving method specifically comprises the following steps that firstly, seedling cultivation soil is screened; 2, the seedling cultivation soil is put into equipment to be smashed; step 3, screening out soil with qualified size, and crushing unqualified soil again; the invention discloses crop seedling cultivation soil crushing and sieving equipment which comprises an external box. The crushing assembly is used for crushing and is arranged at the top of the external box; according to the technical scheme, after being smashed by the smashing assembly, soil enters the screening assembly to be screened, and unqualified soil is conveyed to the smashing assembly by the conveying assembly to be smashed again, so that screening is achieved in the smashing process, cyclic smashing is achieved at the same time, and the smashing efficiency is improved.

Description

Technical Field

[0001] The invention belongs to crushing equipment, and in particular relates to a crushing and screening method and equipment for cultivating soil for crop seedlings. Background Art

[0002] Rice is one of the largest grain crops in my country. Since rice cultivation requires seedling cultivation, for a long time, traditional rice seedling fields have been planted with green manure in fields with relatively good soil fertility before the seedling raising season. The fields are plowed together with the surface soil and fermented and leveled, and then the soil is furrowed and dried to form a seedling bed. Rice seeds are sown directly in the soil seedling bed, and the surface is covered with nutrient soil made from a mixture of topsoil, frozen soil, plant ash, and organic fertilizer. Continuous soil extraction can easily cause damage to the soil cultivation layer and loss of surface nutrients. Since the seedling raising process is difficult and farmers find it difficult to master, the rapid popularization of rice transplanting machines is restricted.

[0003] After a long period of demonstration and promotion, people have also mastered the technology of raising rice seedlings. If you want to mechanize the rice planting and transplanting process, you must use a rice transplanter. However, the use of a rice transplanter to transplant rice seedlings must first have a rice seedling raising technology that matches the rice transplanter. In the process of raising rice seedlings, the cultivation soil is indispensable. The traditional preparation of rice seedling cultivation soil is manually crushed and then manually screened. The workload is large and the efficiency is low, which cannot meet the requirements of mechanization of large-scale rice planting. Therefore, a crushing and screening machine for rice seedling cultivation soil with high work efficiency and low labor intensity is needed. Summary of the invention

[0004] The invention provides a method for crushing and screening soil for cultivating rice seedlings, aiming to solve the problem that the preparation of soil for cultivating rice seedlings is manual crushing and then manual screening, which has a large workload and low efficiency.

[0005] The present invention is implemented in this way, a method for crushing and screening soil for cultivating crop seedlings, the method for crushing and screening soil for cultivating crop seedlings is based on equipment, and the method for crushing and screening soil for cultivating crop seedlings specifically comprises the following steps: Step 1: Screening the seedling cultivation soil; Step 2: Put the seedling cultivation soil into the equipment for crushing; Step 3: Screen out the soil of qualified size and re-crush the unqualified soil.

[0006] A crop seedling cultivation soil crushing and screening device comprises an external box and further comprises: A crushing assembly for crushing, wherein the crushing assembly is arranged on the top of the external box; A screening component for screening, wherein the screening component is arranged in an external box, and the crushing component is connected to the screening component, wherein the soil is crushed by the crushing component and then enters the screening component for screening; A transport component for transporting is connected with the screening component, and unqualified soil is transported by the transport component to the crushing component for re-crushing.

[0007] Furthermore, it includes an external box, and the crushing assembly includes a first driving assembly, a crushing box, two first gears and two crushing rollers. Support members are fixed to the outer walls of both sides of the crushing box, and the support members are fixed to the top of the external box. Two horizontally arranged first rotating holes are opened on the outer walls of both sides of the crushing box. The two ends of the crushing roller are respectively rotated in two relatively aligned first rotating holes through bearings. The two first gears are respectively coaxially fixed with the two crushing rollers, and the two first gears are meshed with each other. The first driving assembly is arranged on the outer wall of one side of the crushing box, and the first driving assembly is connected to one of the first gears. The first driving assembly drives the first gear connected to it to rotate, and a first material guide plate is fixed in the crushing box.

[0008] Furthermore, the first driving assembly includes a second servo motor, a driving wheel and a driven wheel, the second servo motor is fixed on the crushing box, the driving wheel is coaxially fixed with the output shaft of the second servo motor, the driven wheel is coaxially fixed with one of the first gears, and a transmission belt is commonly provided on the driving wheel and the driven wheel.

[0009] Furthermore, the screening assembly includes a screening box, a second driving assembly and two screening mechanisms, a bellows for connecting the screening box and the crushing box is provided between the screening box and the crushing box, a second telescopic cylinder is fixed at the four corners of the bottom of the screening box, the second telescopic cylinder is fixed to the bottom inner wall of the external box, a second spring is sleeved on the second telescopic cylinder, and the two ends of the second spring are respectively in contact with the screening box and the external box, the second driving assembly includes a first servo motor, a cam and a roller, the roller is rotatably installed in the screening box, the first servo motor is fixed on the external box, the cam is fixed on the output shaft of the first servo motor, the cam is in contact with the roller, and the two screening mechanisms are both tiltedly arranged in the screening box, Furthermore, the screening mechanism includes a movable frame, a filtering metal mesh is fixed in the movable frame frame, the movable frame is inclined, a sliding port adapted to the movable frame is opened on one side of the screening box, and a discharge hole is opened on the other side of the screening box, the movable frame is arranged in the discharge hole, the movable frame is located in the discharge hole, a fixed frame is fixed at one end of the movable frame, a contact roller is rotatably installed on the fixed frame, a first telescopic cylinder is fixed at both ends of the fixed frame, a fixed block is fixed at one end of the first telescopic cylinder, a first spring is sleeved on the outer wall of the first telescopic cylinder, and the two ends of the first spring are respectively in contact with the fixed block and the fixed frame, an inclined plate is fixed to the screening box, and the contact roller is in contact with the inclined plate, a fixed shell is fixed on both sides of the movable frame, a plurality of scattering rollers are rotatably installed between the two fixed shells, a second gear coaxial with the scattering roller is fixed at one end of the scattering roller, and a rack is fixed to the screening box, and the second gear is meshed with the rack.

[0010] Furthermore, a jet assembly is provided at the bottom of the external box, and the jet assembly includes a cylinder, a piston rod is slidably installed in the cylinder, an intake pipe and an exhaust pipe connected to the cylinder are fixed on both sides of the cylinder, a one-way intake valve is fixed in the intake pipe, a one-way exhaust valve is installed in the exhaust pipe, a gas distributor is provided at the bottom of the external box, and a hose for connecting the exhaust pipe and the gas distributor is provided between the two.

[0011] Furthermore, the transport component includes a vertical cylinder, a second material guide plate for fixing the vertical cylinder and the external box and arranged obliquely is provided between the vertical cylinder, a notch is provided on the outer wall of the vertical cylinder facing the second material guide plate, an inclined third material guide plate is fixed to the top of the vertical cylinder, the third material guide plate is inclined downward toward the direction of the crushing assembly, a third servo motor is fixed to the bottom of the vertical cylinder, a spiral transport rod is fixed to the output shaft of the third servo motor, the spiral transport rod is arranged in the vertical cylinder, and the second material guide plate is located between the two screening mechanisms.

[0012] The beneficial effect achieved by the present invention is that, since a crushing component, a screening component and a transport component are provided, after the soil is crushed by the crushing component, it enters the screening component for screening, and unqualified soil is transported by the transport component to the crushing component for re-crushing, thereby achieving screening during the crushing process and realizing circular crushing at the same time, thereby improving the crushing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.

[0014] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0015] Figure 1 It is an overall first-view stereoscopic schematic diagram provided by the present invention; Figure 2 It is a three-dimensional schematic diagram of the interior of the overall external box provided by the present invention; Figure 3 This is a three-dimensional schematic diagram of the interior of the overall screening box provided by the present invention. Figure 4 yes Figure 3 The enlarged structural diagram of the box selection provided; Figure 5 is an overall side sectional view provided by the present invention; Figure 6 is a cross-sectional view of the jet assembly provided by the present invention; Figure 7 It is an overall side view provided by the present invention; Figure 8 yes Figure 7 AA cutaway diagram provided.

[0016] Reference numerals: 1-external box, 2-first servo motor, 3-crushing assembly, 301-crushing box, 302-first gear, 303-driven wheel, 304-second servo motor, 305-driving wheel, 307-first guide plate, 308-crushing roller, 4-transportation assembly, 401-vertical cylinder, 402-second guide plate, 403-screw transport rod, 404-third servo motor, 405-third guide plate, 5-screening mechanism, 501-moving frame, 502-filter metal mesh, 503-fixed shell, 504 - rack, 505- second gear, 506- beating roller, 6- inclined plate, 7- contact roller, 8- fixed frame, 9- first telescopic cylinder, 10- first spring, 11- fixed block, 12- second spring, 13- second telescopic cylinder, 14- jet assembly, 1401- piston column, 1402- cylinder, 1403- one-way air intake valve, 1404- air intake pipe, 1405- exhaust pipe, 1406- one-way exhaust valve, 15- bellows, 16- gas distributor, 17- roller, 18- cam, 19- screening box. DETAILED DESCRIPTION

[0017] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0018] In order to effectively illustrate the embodiments of the present invention, the embodiments of the present application are described in detail below with reference to the accompanying drawings.

[0019] A method for crushing and screening soil for cultivating crop seedlings, the method for crushing and screening soil for cultivating crop seedlings is based on equipment, and the method for crushing and screening soil for cultivating crop seedlings specifically comprises the following steps: Step 1: Screening the seedling cultivation soil; Step 2: Put the seedling cultivation soil into the equipment for crushing; Step 3: Screen out the soil of qualified size and re-crush the unqualified soil.

[0020] A crop seedling cultivation soil crushing and screening device comprises an external box 1, and also includes: A crushing assembly 3 for crushing, wherein the crushing assembly is arranged on the top of the external box 1; A screening component for screening, the screening component is arranged in the external box 1, the crushing component is connected to the screening component, wherein the soil is crushed by the crushing component and then enters the screening component for screening; The transport component 4 is used for transporting, and the transport component is connected with the screening component. The unqualified soil is transported by the transport component 4 to the crushing component 3 for re-crushing.

[0021] The technical solution of the present invention is that after the soil is crushed by the crushing component, it enters the screening component for screening, and the unqualified soil is transported by the transportation component 4 to the crushing component 3 for re-crushing, thereby realizing screening during the crushing process and realizing circular crushing at the same time, thereby improving the crushing efficiency.

[0022] Reference Figure 1-Figure 8, a crop seedling cultivation soil crushing and screening equipment, including an external box 1, the crushing component 3 includes a first driving component, a crushing box 301, two first gears 302 and two crushing rollers 308, both side outer walls of the crushing box 301 are fixed with supports, the supports are fixed to the top of the external box 1, both side outer walls of the crushing box 301 are provided with two horizontally arranged first rotating holes, the two ends of the crushing roller 308 are respectively rotated in two relatively aligned first rotating holes through bearings, the two first gears 302 are respectively coaxially fixed with the two crushing rollers 308, the two first gears 302 are meshed with each other, the first driving component is arranged on one side outer wall of the crushing box 301, the first driving component is connected to one of the first gears 302, the first driving component drives the first gear 302 connected thereto to rotate, and a first guide plate 307 is fixed in the crushing box 301.

[0023] Furthermore, the first driving assembly includes a second servo motor 304, a driving wheel 305 and a driven wheel 303, the second servo motor 304 is fixed on the crushing box 301, the driving wheel 305 is coaxially fixed with the output shaft of the second servo motor 304, the driven wheel 303 is coaxially fixed with one of the first gears 302, and a transmission belt is commonly provided on the driving wheel 305 and the driven wheel 303.

[0024] From the above, it can be known that the soil is put into the top of the crushing box 301, and the soil is guided between the two crushing rollers 308 by the first guide plate 307. At the same time, the second servo motor 304 drives the driving wheel 305, and the driving wheel 305 is driven by the driven wheel 303 through the transmission belt. The driven wheel 303 drives the first gear 302 fixed thereto to rotate, and the first gear 302 drives another first gear 302 to rotate. The two first gears 302 drive two synchronous and reverse rotations, and the first gear 302 drives the crushing roller 308 fixed thereto to rotate, thereby crushing the soil.

[0025] Furthermore, the screening assembly includes a screening box 19, a second drive assembly and two screening mechanisms 5. A bellows 15 is provided between the screening box 19 and the crushing box 301 for connecting the two. Second telescopic cylinders 13 are fixed at the four corners of the bottom of the screening box 19. The second telescopic cylinder 13 is fixed to the bottom inner wall of the external box 1. A second spring 12 is sleeved on the second telescopic cylinder 13. The two ends of the second spring 12 are in contact with the screening box 19 and the external box 1 respectively. The second drive assembly includes a first servo motor 2, a cam 18 and a roller 17. The roller 17 is rotatably installed in the screening box 19. The first servo motor 2 is fixed on the external box 1. The cam 18 is fixed on the output shaft of the first servo motor 2. The cam 18 is in contact with the roller 17. The two screening mechanisms 5 are both tiltedly arranged in the screening box 19.

[0026] From the above, it can be seen that the first servo motor 2 drives the cam 18 to rotate through the output shaft, and the cam 18 moves the screening box 19 downward through the roller 17. At this time, the second telescopic cylinder 13 is shortened and the second spring 12 is compressed. Therefore, it can be seen that the cam 18 rotates continuously, thereby driving the screening box 19 to move up and down, and the two screening mechanisms 5 in the screening box 19 vibrate up and down, thereby performing vibration screening.

[0027] Furthermore, the screening mechanism 5 includes a mobile frame 501, a filtering metal mesh 502 is fixed in the frame of the mobile frame 501, the mobile frame 501 is tilted, a sliding opening adapted to the mobile frame 501 is opened on one side of the screening box 19, a discharge hole is opened on the other side of the screening box 19, the mobile frame 501 is arranged in the discharge hole, the mobile frame 501 is located in the discharge hole, a fixed frame 8 is fixed at one end of the mobile frame 501, a contact roller 7 is rotatably mounted on the fixed frame 8, and first telescopic cylinders 9 are fixed at both ends of the fixed frame 8, and the first telescopic cylinders 9 are fixed at both ends of the fixed frame 8. A fixed block 11 is fixed to one end of the cylinder 9, and a first spring 10 is sleeved on the outer wall of the first telescopic cylinder 9. The two ends of the first spring 10 are respectively in contact with the fixed block 11 and the fixed frame 8. The screening box 19 is fixed with an inclined plate 6, and the contact roller 7 is in contact with the inclined plate 6. Fixed shells 503 are fixed on both sides of the movable frame 501, and a plurality of scattering rollers 506 are rotatably installed between the two fixed shells 503. A second gear 505 coaxial with the scattering roller 506 is fixed to one end of the scattering roller 506. A rack 504 is fixed to the screening box 19, and the second gear 505 is meshed with the rack 504.

[0028] From the above, it can be known that as the entire screening mechanism 5 moves up and down, the contact roller 7 on the movable frame 501 moves up and down along the inclined plate 6, so that the movable frame 501 moves back and forth in a straight line. At the same time, the second gear 505 moves on the rack 504, so that the scattering roller 506 is caught and rotated, and the soil on the filter metal mesh 502 is scattered by the scattering roller 506, thereby preventing soil accumulation and improving the screening efficiency.

[0029] Furthermore, a jet assembly 14 is provided at the bottom of the external box 1, and the jet assembly 14 includes a cylinder 1402, in which a piston rod 1401 is slidably installed, and an intake pipe 1404 and an exhaust pipe 1405 connected thereto are fixed on both sides of the cylinder 1402, a one-way intake valve 1403 is fixed in the intake pipe 1404, and a one-way exhaust valve 1406 is installed in the exhaust pipe 1405, and a gas distributor 16 is provided at the bottom of the external box 1, and a hose for connecting the exhaust pipe 1405 and the gas distributor 16 is provided between the two.

[0030] As can be seen from the above, during the up and down movement of the screening box 19, the piston rod 1401 moves up and down accordingly, thereby driving the introduced gas to enter the gas distributor 16 continuously, and the gas distributor 16 performs jet treatment on the filter metal mesh 502, and then treats the filter metal mesh 502, and then cleans it; Furthermore, the transport component 4 includes a vertical cylinder 401, and a second material guide plate 402 for fixing the vertical cylinder 401 and the external box 1 and being inclined is arranged between the vertical cylinder 401, and a notch is opened on the outer wall of the vertical cylinder 401 facing the second material guide plate 402, and an inclined third material guide plate 405 is fixed to the top of the vertical cylinder 401, and the third material guide plate 405 is inclined downward toward the crushing component 3, and a third servo motor 404 is fixed to the bottom of the vertical cylinder 401, and a spiral transport rod 403 is fixed to the output shaft of the third servo motor 404, and the spiral transport rod 403 is arranged in the vertical cylinder 401, and the second material guide plate 402 is located between the two screening mechanisms 5.

[0031] It can be known from the above that the third servo motor 404 drives the spiral transport rod 403 to rotate, and the spiral transport rod 403 transports the soil to the top of the crushing assembly 3.

[0032] Working principle: put the soil into the top of the crushing box 301, and the soil is guided between the two crushing rollers 308 by the first guide plate 307. At the same time, the second servo motor 304 drives the driving wheel 305, and the driving wheel 305 is driven by the driven wheel 303 through the transmission belt. The driven wheel 303 drives the first gear 302 fixed thereto to rotate, and the first gear 302 drives another first gear 302 to rotate. The two first gears 302 drive two synchronous and reverse rotations, and the first gear 302 drives the crushing rollers 308 fixed thereto to rotate, so as to crush the soil. After crushing, it suddenly enters the screening box 19, and the first servo motor 2 drives the cam 18 to rotate through the output shaft, and the cam 18 moves the screening box 19 downward through the roller 17. At this time, the second telescopic cylinder 13 is shortened and the second spring 12 is compressed. Therefore, it can be seen that the cam 18 rotates continuously, thereby driving the screening box 19 to move up and down, and two screening mechanisms are obtained in the screening box 19. 5 vibrates up and down, thereby performing vibration screening. The entire screening mechanism 5 moves up and down, and the contact roller 7 on the mobile frame 501 moves up and down along the inclined plate 6, so that the mobile frame 501 moves back and forth in a straight line. At the same time, the second gear 505 moves on the rack 504, so that the scattering roller 506 is caught and rotated, and the soil on the filter metal mesh 502 is scattered by the scattering roller 506 to prevent the soil from piling up and improve the screening efficiency. In the process of the screening box 19 moving up and down, the piston column 1401 moves up and down accordingly, thereby driving the continuous introduction of gas into the gas distributor 16, and the gas distributor 16 performs jet treatment on the filter metal mesh 502, and then treats the filter metal mesh 502, and then cleans it, and the unqualified ones enter the transport component 4, and the third servo motor 404 drives the spiral transport rod 403 to rotate, and the spiral transport rod 403 transports the soil to the top of the crushing component 3 for re-crushing.

[0033] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A method for crushing and screening soil for cultivating crop seedlings, characterized in that: The method for crushing and screening soil for cultivating crop seedlings is based on equipment, and the method for crushing and screening soil for cultivating crop seedlings specifically comprises the following steps: Step 1: Screening the seedling cultivation soil; Step 2: Put the seedling cultivation soil into the equipment for crushing; Step 3: Screen out the soil of qualified size and re-crush the unqualified soil.

2. A crop seedling cultivation soil crushing and screening device, comprising an external box (1), characterized in that: Also includes; A crushing assembly (3) for crushing, wherein the crushing assembly is arranged on the top of the external box (1); a screening component for screening, the screening component being arranged in an external box (1), the crushing component being connected to the screening component, wherein after the soil is crushed by the crushing component, it enters the screening component for screening; A transport component (4) for transporting, wherein the transport component is connected to the screening component, and unqualified soil is transported by the transport component (4) to the crushing component (3) for re-crushing.

3. The crop seedling cultivation soil crushing and screening equipment according to claim 2, characterized in that: The invention comprises an external box (1), characterized in that the pulverizing assembly (3) comprises a first driving assembly, a pulverizing box (301), two first gears (302) and two pulverizing rollers (308); both outer walls of the pulverizing box (301) are fixed with support members, the support members are fixed to the top of the external box (1); both outer walls of the pulverizing box (301) are provided with two horizontally arranged first rotating holes; both ends of the pulverizing roller (308) are respectively rotated in the two first rotating holes aligned with each other through bearings; the two first gears (302) are respectively coaxially fixed with the two pulverizing rollers (308); the two first gears (302) are meshed with each other; the first driving assembly is arranged on one outer wall of the pulverizing box (301); the first driving assembly is connected to one of the first gears (302); the first driving assembly drives the first gear connected thereto to rotate; and a first material guide plate (307) is fixed in the pulverizing box (301).

4. The crop seedling cultivation soil crushing and screening equipment according to claim 3, characterized in that: The first driving assembly comprises a second servo motor (304), a driving wheel (305) and a driven wheel (303); the second servo motor (304) is fixed on the crushing box (301); the driving wheel (305) is coaxially fixed with the output shaft of the second servo motor (304); the driven wheel (303) is coaxially fixed with one of the first gears (302); and a transmission belt is commonly sleeved on the driving wheel (305) and the driven wheel (303).

5. The crop seedling cultivation soil crushing and screening equipment according to claim 3, characterized in that: The screening assembly comprises a screening box (19), a second drive assembly and two screening mechanisms (5); a bellows (15) is provided between the screening box (19) and the crushing box (301) for connecting the two; second telescopic cylinders (13) are fixed at four corners of the bottom of the screening box (19); the second telescopic cylinder (13) is fixed to the inner wall of the bottom of the external box (1); a second spring (12) is sleeved on the second telescopic cylinder (13); two ends of the second spring (12) are in contact with the screening box (19) and the external box (1), respectively; the second drive assembly comprises a first servo motor (2), a cam (18) and a roller (17); the roller (17) is rotatably mounted on the screening box (19); the first servo motor (2) is fixed to the external box (1); the cam (18) is fixed to the output shaft of the first servo motor (2); the cam (18) is in contact with the roller (17); the two screening mechanisms (5) are both obliquely arranged in the screening box (19); The crop seedling cultivation soil crushing and screening device according to claim 5 is characterized in that the screening mechanism (5) comprises a movable frame (501), a filtering metal mesh (502) is fixed in the movable frame (501), the movable frame (501) is tilted, a sliding opening adapted to the movable frame (501) is provided on one side of the screening box (19), a discharge hole is provided on the other side of the screening box (19), the movable frame (501) is arranged in the discharge hole, the movable frame (501) is located in the discharge hole, a fixed frame (8) is fixed at one end of the movable frame (501), a contact roller (7) is rotatably mounted on the fixed frame (8), and a first telescopic cylinder (7) is fixed at both ends of the fixed frame (8). 9), a fixed block (11) is fixed to one end of the first telescopic cylinder (9), a first spring (10) is sleeved on the outer wall of the first telescopic cylinder (9), two ends of the first spring (10) are in contact with the fixed block (11) and the fixed frame (8) respectively, an inclined plate (6) is fixed to the screening box (19), the contact roller (7) is in contact with the inclined plate (6), fixed shells (503) are fixed to both sides of the movable frame (501), a plurality of scattering rollers (506) are rotatably mounted between the two fixed shells (503), a second gear (505) coaxial with the scattering roller (506) is fixed to one end of the scattering roller (506), a rack (504) is fixed to the screening box (19), and the second gear (505) is meshed with the rack (504).

6. The crop seedling cultivation soil crushing and screening equipment according to claim 6, characterized in that: The bottom of the external box (1) is provided with an injection assembly (14), the injection assembly (14) comprising a cylinder (1402), a piston rod (1401) being slidably mounted in the cylinder (1402), an air intake pipe (1404) and an exhaust pipe (1405) being fixed on both sides of the cylinder (1402) and connected thereto, a one-way air intake valve (1403) being fixed in the air intake pipe (1404), a one-way exhaust valve (1406) being installed in the exhaust pipe (1405), a gas distributor (16) being provided at the bottom of the external box (1), and a hose for connecting the exhaust pipe (1405) and the gas distributor (16) is provided between the two.

7. The crop seedling cultivation soil crushing and screening equipment according to claim 6, characterized in that: The transport component (4) comprises a vertical cylinder (401); a second material guide plate (402) for fixing the vertical cylinder (401) and the external box (1) is arranged between the vertical cylinder (401) and is arranged obliquely; a notch is provided on the outer wall of the vertical cylinder (401) facing the second material guide plate (402); an inclined third material guide plate (405) is fixed to the top of the vertical cylinder (401); the third material guide plate (405) is inclined downward in the direction of the crushing component (3); a third servo motor (404) is fixed to the bottom of the vertical cylinder (401); a spiral transport rod (403) is fixed to the output shaft of the third servo motor (404); the spiral transport rod (403) is arranged in the vertical cylinder (401); and the second material guide plate (402) is located between the two screening mechanisms (5).

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