A screening and crushing integrated seedling tray centralized feeding device

Abstract

The present invention discloses a centralized feeding device for seedling trays that is integrated with screening and crushing. The feeding device includes: a dustproof bracket, a material receiving box, a transmission and identification mechanism, a screening mechanism, a feeding conveyor belt, an elevator, and a crushing mechanism. After the material receiving box collects the laid materials, the materials flow into the transmission and identification mechanism, which cooperates with the screening mechanism to screen the qualified materials. After flowing into the feeding conveyor belt, the elevator transmits the qualified materials to the designated area. The unqualified materials flow into the crushing mechanism, which is crushed, and then flow back into the material receiving box to repeat the above process. The present invention can complete the transportation, screening and crushing of the laid materials. At the same time, the vibration amplitude of the vibrating screen can be adjusted according to the actual feed amount of the materials to improve the working efficiency of the vibration. The equipment can complete various processing of the laid materials within a reasonable space, greatly improving the working efficiency and having good practicality.

Description

Technical Field

[0001] The invention relates to the technical field of centralized seedling tray feeding, in particular to a centralized seedling tray feeding device capable of screening and crushing seedling trays. Background Art

[0002] Covering the rice seedling trays with soil requires a high labor intensity in the existing rice seedling cultivation. The surface covering requires uniform soil particles to facilitate the growth environment of the seedlings. The existing covering scheme generally uses a covering machine with a conveyor belt for surface covering. Compared with manual covering, equipment covering is significantly more efficient than manual covering, and simplifies some work content in the entire process of rice seedling cultivation, which is of great significance to the development of modern agriculture.

[0003] The existing soil covering and feeding methods basically adopt traditional transmission feeding, which cannot accurately control the feeding quality, cannot effectively regulate materials of different qualities, cannot effectively crush large particles, and the quality of the supplied materials is uneven, which directly affects the survival quality of seedlings in trays.

[0004] In summary, a screening and crushing integrated seedling tray centralized feeding device and its matching usage method can just deal with the above-mentioned problems, especially for the more common large-particle covering soil, which has obvious regularization and crushing effects. Summary of the Invention

[0005] The present invention aims to improve the feeding quality. To this end, the present invention proposes a screening and crushing integrated seedling tray centralized feeding device, which can complete the screening and crushing of materials. At the same time, it can automatically adjust the movement amplitude of the vibrating screen according to the amount of material during operation to ensure high-quality screening of materials.

[0006] In order to achieve the above-mentioned purpose, the technical solution provided by the present invention is a screening and crushing integrated seedling tray centralized feeding device, comprising: a dust-proof bracket, a material receiving box, a transmission identification mechanism, a screening mechanism, a feeding conveyor belt, an elevator and a crushing mechanism, the dust-proof bracket comprises a bottom frame and a plurality of supporting legs supported by the bottom, a middle frame is provided above the bottom frame, the middle frame and the bottom frame are fixedly connected by a first connecting column, the bottom frame is also provided with a group support column, the upper end of the support column is fixedly connected to the material receiving box, the bottom opening of the material receiving box is provided with a transmission identification mechanism, the transmission identification mechanism comprises a first conveyor belt, the A screening mechanism is provided below the first conveyor belt, said screening mechanism comprising a material receiving and screening box, said material receiving and screening box being placed below the first conveyor belt, third connecting columns are provided on both sides of the first conveyor belt, said third connecting columns are fixedly connected to the top of the material receiving and screening box, a second connecting column is provided below the material receiving and screening box, said second connecting column is fixedly connected to the top of the middle frame, a feeding conveyor belt is also provided below the material receiving and screening box, said feeding conveyor belt comprises a second conveyor belt, an elevator is provided at the transmission end of the second conveyor belt, a crushing mechanism is connected through one side of the material receiving and screening box, and rotating discs are provided on both sides of the rotating roller at the transmission end of the first conveyor belt;

[0007] The rotating disc is provided with a second sliding groove, a second sliding fixing rod is provided in the second sliding groove, the sliding contact column is passed through the second sliding fixing rod and is placed in the second sliding groove, a second spring is provided between the sliding contact column and the end plane of the second sliding groove, the second spring is penetrated by the second sliding fixing rod, a spherical groove is provided at the top of the sliding contact column, a rolling ball is placed in the spherical groove, and the outer surface of the rotating disc is in contact with the long handle of the extrusion rod;

[0008] The top of the fixing plate is fixedly connected to the first sliding groove of the fixing plate, and the fixing plate is inserted into the top of the fixing plate, and the fixing plate is fixedly connected to the first sliding groove of the fixing plate.

[0009] As a preferred embodiment of the present invention, a leakage material collection port is provided on the outlet side of the first conveyor belt, and the leakage material collection port is provided with a fixed column, and the fixed column is fixedly connected to the upper left side of the material receiving and screening box, and material guard plates are provided on the upper sides of both sides of the first conveyor belt, and the first worm gear motor is connected to the right side of the first conveyor belt.

[0010] As a preferred embodiment of the present invention, a rectangular support plate is provided inside the material receiving and screening box, a screening plate is provided above the rectangular support plate, a through coarse screening frame and a fine screening frame are provided at the bottom of the material receiving and screening box, a leveling frame is fixedly connected between the coarse screening frame and the fine screening frame, a loading plate is connected to the center of the top of the material receiving and screening box, a groove is opened in the middle of the loading plate, a floating scraper plate is placed in the groove, an adjusting nut is provided at the top of the floating scraper plate, and the bottom of the adjusting nut contacts the top of the loading plate.

[0011] As a preferred embodiment of the present invention, the screen plate is placed at an angle, two sets of third springs are provided between the screen plate and the rectangular support plate below the leakage collection port, and the other side of the screen plate is rotatably connected to the rectangular support plate through a hinge.

[0012] As a preferred embodiment of the present invention, a material collecting frame is placed on the second conveyor belt, and a second worm gear motor is connected to the side of the second conveyor belt.

[0013] As a preferred embodiment of the present invention, the elevator includes a material collecting cover fixed to the bottom frame on the side of the second conveyor belt, a transmission frame is fixedly connected to the inside of the material collecting cover, a transmission chain is provided in the transmission frame, a number of material-bearing scrapers are carried above the transmission chain, and the bottom of the transmission chain is connected to the rotating shaft of the third worm gear motor, the third worm gear motor is placed on the outside of the material collecting cover, and the outside of the transmission frame is wrapped with a first dust cover.

[0014] As a preferred embodiment of the present invention, the crushing mechanism includes a crushing material collecting trough, which is arranged at the end of the material receiving and screening box, and a crushing material conveyor belt is provided at the discharge port of the crushing material collecting trough, and the outer side of the crushing material conveyor belt is wrapped with a second dust cover, and the bottom of the second dust cover is provided with a fixing bracket, and the fixing bracket is fixedly connected to the bottom frame, and the bottom of the crushing material conveyor belt is connected to a fourth worm gear motor, and the fourth worm gear motor is placed outside the second dust cover, and a crushing material box is provided at the end of the crushing material conveyor belt, and the crushing material box is placed above the material receiving box, and fourth connecting columns are provided on both sides of the crushing material box, and the fourth connecting columns are fixedly connected to the top of the material receiving box, and the bottom of the crushing material box is through, and two groups of crushing wheels are provided inside the crushing material box, and one side of the two groups of crushing wheels is provided with a fifth worm gear motor, and the other side of the two groups of crushing wheels is fixedly connected with transmission gears that mesh with each other.

[0015] In summary, the present invention has the following beneficial effects compared to the prior art:

[0016] The present invention is a screening and crushing integrated seedling tray centralized feeding device. Through the cooperation of the transmission identification mechanism and the screening mechanism, the identification mechanism adjusts the vibration amplitude of the screening plate of the screening mechanism according to the amount of material on the first conveyor belt, thereby improving the screening vibration quality; after the material flows into the first conveyor belt through the receiving box, it is screened according to the screening mechanism, and the finely crushed material is directly passed into the feeding conveyor belt and then transported to the required area by the elevator, and the large-particle material continues to be screened. After the screening is completed, it flows into the feeding conveyor belt from the coarse screening leakage frame and continues to be transported to the required area. If the particles are too large, they are crushed by the crushing mechanism and continue to flow into the receiving box to repeat the above process. The equipment completes automated operations such as screening, transportation, and crushing in a three-dimensional space, greatly reducing the work intensity of personnel, and at the same time realizes standardized control of materials to ensure the uniformity of conveyed materials, and has strong practicality and popularization. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 This is the first three-dimensional structural diagram of the present invention;

[0019] Figure 2 This is a second three-dimensional structural diagram of the present invention;

[0020] Figure 3 For the present invention Figure 2 A schematic diagram of a second perspective stereoscopic structure;

[0021] Figure 4 It is a schematic diagram of the cross-sectional structure of the present invention;

[0022] Figure 5 is a schematic cross-sectional view of a portion of the three-dimensional structure of the transmission identification mechanism of the present invention;

[0023] Figure 6 This is a second partial three-dimensional structural diagram of the transmission identification mechanism of the present invention;

[0024] Figure 7 is a schematic cross-sectional view of a portion of the three-dimensional structure of the screening mechanism of the present invention;

[0025] Figure 8 This is a second partial three-dimensional structural cross-sectional diagram of the screening mechanism of the present invention;

[0026] Figure 9This is a third partial three-dimensional structural cross-sectional diagram of the screening mechanism of the present invention;

[0027] Figure 10 This is a fourth partial three-dimensional structural cross-sectional diagram of the screening mechanism of the present invention;

[0028] Figure 11 It is a schematic cross-sectional view of the three-dimensional structure of the feeding conveyor belt of the present invention;

[0029] Figure 12 It is a schematic cross-sectional view of the three-dimensional structure of the elevator of the present invention;

[0030] Figure 13 It is a schematic cross-sectional view of the three-dimensional structure of the crushing mechanism of the present invention;

[0031] Figure 14 This is a second schematic sectional view of the three-dimensional structure of the crushing mechanism of the present invention.

[0032] Figure numbers: 1. Dust-proof bracket; 11. Bottom frame; 12. Support foot; 13. Middle frame; 14. Support column; 15. First connecting column; 16. Second connecting column; 17. Third connecting column; 18. Fourth connecting column; 2. Material receiving box; 3. Conveyor identification mechanism; 31. First conveyor belt; 32. First worm gear motor; 33. Fixed column; 34. Leakage material collection port; 35. Material guard plate; 36. Rotating disc; 37. Extrusion rod; 38. Contact buckle plate; 39. Threaded rod; 310. Long rod extrusion plate; 311. Fixed plate; 312. First sliding fixed rod; 313. Bowl-shaped extrusion block; 314. Sliding rod; 315. First spring; 316. Sliding contact column; 317. Rolling ball; 318. First sliding groove; 319. Second sliding groove; 320. Second sliding fixed rod; 321. Second spring; 322. Spherical groove ; 323, punching slide block; 324, scraper plate; 4, screening mechanism; 41, material screening box; 42, screening plate; 43, third spring; 44, rectangular support plate; 45, coarse screen leakage frame; 46, fine screen leakage frame; 47, leveling frame; 48, loading plate; 49, floating scraper plate; 410, adjusting nut; 5, feeding conveyor belt; 51, second conveyor belt; 52, collecting frame; 53, second worm gear motor; 6 , elevator; 61, transmission frame; 62, material scraper; 63, transmission chain; 64, third worm gear motor; 65, first dust cover; 66, collecting cover; 7, crushing mechanism; 71, crushed material conveyor belt; 72, fourth worm gear motor; 73, second dust cover; 74, fixed frame; 75, crushed material box; 76, fifth worm gear motor; 77, crushing wheel; 78, transmission gear; 79, crushed material collecting trough. DETAILED DESCRIPTION

[0033] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0034] The following combination Figure 1-14 The specific embodiment of the present invention is described as follows: The present invention discloses a screening and crushing integrated seedling tray centralized feeding device, including a dust-proof bracket 1, a material receiving box 2, a transmission identification mechanism 3, a screening mechanism 4, a feeding conveyor belt 5, an elevator 6 and a crushing mechanism 7. The dust-proof bracket 1 includes a bottom frame 11 and a plurality of support legs 12 supported at the bottom. A middle frame 13 is provided above the bottom frame 11. The middle frame 13 is fixedly connected to the bottom frame 11 through a first connecting column 15. The bottom frame 11 is also provided with a group support column 14. The upper end of the support column 14 is fixedly connected to the material receiving box 2. The bottom opening of the material receiving box 2 is provided with a transmission identification mechanism 3. The transmission identification mechanism 3 includes It includes a first conveyor belt 31, a screening mechanism 4 is provided below the first conveyor belt 31, the screening mechanism 4 includes a material receiving and screening box 41, the material receiving and screening box 41 is placed below the first conveyor belt 31, and third connecting columns 17 are provided on both sides of the first conveyor belt 31. The third connecting columns 17 are fixedly connected to the top of the material receiving and screening box 41, and a second connecting column 16 is provided below the material receiving and screening box 41. The second connecting column 16 is fixedly connected to the top of the middle frame 13, and a feeding conveyor belt 5 is also provided below the material receiving and screening box 41. The feeding conveyor belt 5 includes a second conveyor belt 51, and a hoist 6 is provided at the conveying end of the second conveyor belt 51. A crushing mechanism 7 is connected to one side of the material receiving and screening box 41.

[0035] In practice, the operator flows the material into the first conveyor belt 31 through the material receiving box 2, and then screens it according to the screening mechanism 4. The finely crushed material is directly passed into the feeding conveyor belt 5 and then transported to the required area by the elevator 6. The large particle material continues to be screened. After the screening is completed, it flows into the feeding conveyor belt 5 through the coarse screening leakage frame 45 and continues to be transported to the required area. If the particles are too large, they are crushed by the crushing mechanism 7 and continue to flow into the material receiving box 2 to repeat the above process.

[0036] The first conveyor belt 31 is provided with a rotating disc 36 on both sides of the rotating roller at the conveying end, the first conveyor belt 31 is provided with a leakage collection port 34 on the outlet side, the leakage collection port 34 is provided with a fixed column 33, the fixed column 33 is fixedly connected to the upper left side of the material screening box 41, and the upper sides of the first conveyor belt 31 are provided with a material guard plate 35. The first conveyor belt 31 is connected to the right side with a first worm gear motor 32. The rotating disc 36 is provided with a second sliding groove 319. The second sliding groove 319 is provided with a second sliding fixing rod 320. The sliding contact column 316 passes into the second The sliding fixing rod 320 is placed in the second sliding groove 319, and a second spring 321 is provided between the sliding contact column 316 and the end plane of the second sliding groove 319. The second spring 321 is penetrated by the second sliding fixing rod 320. The top of the sliding contact column 316 is provided with a spherical groove 322, and the rolling ball 317 is placed in the spherical groove 322. The outer surface of the rotating disk 36 fits the long handle of the extrusion rod 37. The extrusion rod 37 is provided with a first sliding groove 318. The sliding contact column 316 is placed in the first sliding groove 318. The long rod at the bottom of the extrusion rod 37 is provided with a There are several punched sliding blocks 323, which are fixedly connected to the inner side of the leaked material collection port 34. The first conveyor belt 31 is provided with a contact buckle plate 38 above the same position of the rotating disc 36. Threaded rods 39 are fixedly connected on both sides of the contact buckle plate 38. The threaded rods 39 pass through the threaded holes at the top of the long rod extrusion plate 310. A fixed plate 311 is provided on the outside of the long rod extrusion plate 310. The fixed plate 311 is provided with a first sliding fixing rod 312. The first sliding fixing rod 312 on the fixed plate 311 passes through the middle of the long rod extrusion plate 310. The bottom of the long rod extrusion plate 310 A bowl-shaped extrusion block 313 is provided at the center of the circle. The axial symmetry center of the bowl-shaped extrusion block 313 coincides with the axial symmetry center of the rotating disk 36. The rolling ball 317 at the top of the sliding contact column 316 fits the inner arc surface of the bowl-shaped extrusion block 313. The top of the bowl-shaped extrusion block 313 is fixedly connected to a sliding rod 314. The sliding rod 314 passes through the middle of the fixed plate 311. A first spring 315 is provided between the fixed plate 311 and the bowl-shaped extrusion block 313. The first spring 315 is penetrated by the sliding rod 314. The top of the fixed plate 311 is fixedly connected to the top of the leakage collection port 34.

[0037] In practice, before the material passes through the first conveyor belt 31 and flows into the leakage collection port 34, it touches the contact buckle plate 38, and the threaded rod 39 provided on the contact buckle plate 38 rotates, pushing the long rod extrusion plate 310 to move along the first sliding fixed rod 312 provided on the fixed plate 311, and the long rod extrusion plate 310 squeezes the bowl-shaped extrusion block 313 to move in the direction of the center extension line of the sliding rod 314. Since the rolling ball 317 at the top of the sliding contact column 316 contacts the inner wall of the bowl-shaped extrusion block 313, the lateral displacement of the bowl-shaped extrusion block 313 squeezes the sliding contact column 316 along the second The sliding lateral displacement changes the distance between the sliding contact column 316 and the center of the rotating disc 36. Since the rotating disc 36 is connected to the rotating axis of the first conveyor belt 31, the sliding contact column 316 changes the diameter of the rotating circle. At the same time, since the sliding contact column 316 passes through the long rod extrusion plate 310 and is provided with a first sliding groove 318, and the bottom of the extrusion rod 37 is slidably connected to the perforated sliding block 323 provided on the inner side of the leakage collection port 34, the solid extrusion rod 37 can change the vertical displacement length of the extrusion rod 37 as the sliding contact column 316 is displaced, thereby changing the vibration amplitude of the screen plate 42.

[0038] Beneficially, a rectangular support plate 44 is provided inside the material receiving and screening box 41, and a screening plate 42 is provided above the rectangular support plate 44. The screening plate 42 is placed at an angle, and two sets of third springs 43 are provided between the screening plate 42 and the rectangular support plate 44 below the leakage collection port 34. The other side of the screening plate 42 is rotatably connected to the rectangular support plate 44 by a hinge. A through coarse screen leakage frame 45 and a fine screen leakage frame 46 are provided at the bottom of the material receiving and screening box 41, and a leveling frame 47 is fixedly connected between the coarse screen leakage frame 45 and the fine screen leakage frame 46. A loading plate 48 is connected to the center of the top of the material receiving and screening box 41, and a groove is opened in the middle of the loading plate 48. A floating scraper plate 49 is placed in the groove. An adjusting nut 410 is provided at the top of the floating scraper plate 49, and the bottom of the adjusting nut 410 contacts the top of the loading plate 48.

[0039] In practice, the bottom of the extrusion rod 37 contacts the inclined end of the screen plate 42. When the material is fed into the leakage collection port 34 of the conveying identification mechanism 3, the extrusion rod 37 moves up and down, pushing the end to rotate by the hinge 411 to connect the screen plate 42 and the rectangular support plate 44, and vibrate in the vertical direction of the third spring 43 to achieve material screening. At the same time, the floating scraper plate 49 smoothes the material moving downward along the end of the screen plate 42 to avoid material accumulation and poor spreading. The smoothing frame 47 at the bottom can assist in smoothing the surface material of the second conveyor belt 51.

[0040] Advantageously, a collecting frame 52 is placed on the second conveyor belt 51, and a second worm gear motor 53 is connected to the side of the second conveyor belt 51. The elevator 6 includes a collecting cover 66 fixed to the bottom frame 11 on the side of the second conveyor belt 51. The collecting cover 66 is fixedly connected to a transmission frame 61. A transmission chain 63 is provided in the transmission frame 61. A number of material-bearing scrapers 62 are carried above the transmission chain 63. The bottom of the transmission chain 63 is connected to the rotating shaft of the third worm gear motor 64. The third worm gear motor 64 is placed on the outside of the collecting cover 66, and the outside of the transmission frame 61 is wrapped with a first dust cover 65.

[0041] In practice, after the material falls onto the second conveyor belt 51 , the transmission frame 61 drives the material scraper 62 on the transmission chain 63 to scrape up the material and transport it to the desired area.

[0042] Beneficially, the crushing mechanism 7 includes a crushing material collecting trough 79, which is arranged at the end of the material screening box 41, and a crushing material conveyor belt 71 is provided at the discharge port of the crushing material collecting trough 79. The outer side of the crushing material conveyor belt 71 is wrapped with a second dust cover 73, and a fixing bracket 74 is provided at the bottom of the second dust cover 73. The fixing bracket 74 is fixedly connected to the bottom frame 11, and a fourth worm gear motor 72 is connected to the bottom of the crushing material conveyor belt 71. The fourth worm gear motor 72 is placed outside the second dust cover 73, and a crushing material box 75 is provided at the end of the crushing material conveyor belt 71. The crushing material box 75 is placed above the material receiving box 2, and fourth connecting columns 18 are provided on both sides of the crushing material box 75. The fourth connecting column 18 is fixedly connected to the top of the material receiving box 2. The bottom of the crushing material box 75 is through-connected, and two sets of crushing wheels 77 are provided inside the crushing material box 75. One side of the two sets of crushing wheels 77 is provided with a fifth worm gear motor 76, and the other side of the two sets of crushing wheels 77 is fixedly connected with a transmission gear 78 that meshes with each other.

[0043] In practice, the large particles are collected in the crushing material collecting trough 79 and then conveyed to the crushing material box 75 by the crushing material conveyor belt 71. The crushing wheel 77 provided in the crushing material box 75 crushes the large particles and then flows into the receiving box 2 for further screening.

[0044] The working principle of the present invention is as follows: after the operator allows the material to flow into the first conveyor belt 31 through the material receiving box 2, the material passes through the first conveyor belt 31 and flows into the leakage collecting port 34, after touching the contact buckle plate 38, the threaded rod 39 provided on the contact buckle plate 38 rotates, pushing the long rod extrusion plate 310 to move along the first sliding fixed rod 312 provided on the fixed plate 311, and the long rod extrusion plate 310 squeezes the bowl-shaped extrusion block 313 to move along the extension line of the center of the sliding rod 314. Since the rolling ball 317 at the top of the sliding contact column 316 contacts the inner wall of the bowl-shaped extrusion block 313, the lateral displacement of the bowl-shaped extrusion block 313 squeezes the sliding contact column 316 along the second sliding lateral displacement provided on the rotating disk 36, thereby changing the center distance between the sliding contact column 316 and the rotating disk 36. 31 is connected to the rotating shaft of the long rod extrusion plate 310, and the sliding contact column 316 changes the diameter of the rotating circle. At the same time, because the sliding contact column 316 passes through the long rod extrusion plate 310, a first sliding groove 318 is provided, and the bottom of the extrusion rod 37 is slidably connected to the perforated sliding block 323 provided on the inner side of the leakage collection port 34. The solid extrusion rod 37 can change the vertical displacement length of the extrusion rod 37 with the displacement of the sliding contact column 316, thereby changing the vibration amplitude of the screening plate 42, driving the screening mechanism 4 to screen, and directly pass the finely crushed material into the feeding conveyor 5 and then be transported to the required area by the elevator 6. The large particle material continues to be screened. After the screening is completed, it flows into the feeding conveyor 5 from the coarse screening leakage frame 45 and continues to be transported to the required area. If the particles are too large, they are crushed by the crushing mechanism 7 and then continue to flow into the receiving box 2 to repeat the above process.

[0045] The embodiments of this specific implementation method are all preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the scope of protection of the present invention.

Claims

1. A screening and crushing integrated seedling tray centralized feeding device, characterized by: The invention comprises a dustproof support (1), a material receiving box (2), a transmission identification mechanism (3), a screening mechanism (4), a feeding conveyor belt (5), an elevator (6) and a crushing mechanism (7); the dustproof support (1) comprises a bottom frame (11) and a plurality of supporting legs (12) supporting the bottom; a middle frame (13) is provided above the bottom frame (11); the middle frame (13) and the bottom frame (11) are fixedly connected via a first connecting column (15); the bottom frame (11) is also provided with four groups of supporting columns (14); the upper ends of the supporting columns (14) are fixedly connected to the material receiving box (2), a conveying identification mechanism (3) is provided at the bottom opening of the material receiving box (2), the conveying identification mechanism (3) includes a first conveyor belt (31), a screening mechanism (4) is provided below the first conveyor belt (31), the screening mechanism (4) includes a material receiving screening box (41), the material receiving screening box (41) is placed below the first conveyor belt (31), third connecting columns (17) are provided on both sides of the first conveyor belt (31), the third connecting columns (17) are fixedly connected to the top of the material receiving screening box (41), and a second connecting column ( 16), the second connecting column (16) is fixedly connected to the top of the middle frame (13), and a feeding conveyor belt (5) is provided below the material receiving and screening box (41), and the feeding conveyor belt (5) includes a second conveyor belt (51), and a hoist (6) is provided at the transmission end of the second conveyor belt (51), and a crushing mechanism (7) is connected to one side of the material receiving and screening box (41); rotating discs (36) are provided on both sides of the rotating roller at the transmission end of the first conveyor belt (31); the rotating disc (36) is provided with a second sliding groove (319), and a second sliding groove (319) is provided inside. There is a second sliding fixed rod (320), the sliding contact column (316) is placed in the second sliding groove (319) after passing through the second sliding fixed rod (320), a second spring (321) is provided between the sliding contact column (316) and the end plane of the second sliding groove (319), the second spring (321) is penetrated by the second sliding fixed rod (320), a spherical groove (322) is provided at the top of the sliding contact column (316), the rolling ball (317) is placed in the spherical groove (322), and the outer surface of the rotating disc (36) is in contact with the long handle of the extrusion rod (37); The extrusion rod (37) is provided with a first sliding groove (318), the sliding contact column (316) is placed in the first sliding groove (318), the extrusion rod (37) is provided with a plurality of punching sliding blocks (323) at the bottom long rod, the punching sliding blocks (323) are fixedly connected to the inner side of the leakage collection port (34), the first conveyor belt (31) is provided with a contact buckle plate (38) above the same position of the rotating disc (36), the contact buckle plate (38) is fixedly connected with threaded rods (39) on both sides, the threaded rods (39) are passed through the threaded holes at the top end of the long rod extrusion plate (310), the outside of the long rod extrusion plate (310) is provided with a fixed plate (311), the fixed plate (311) is provided with a first sliding fixing rod (312), the first sliding fixing rod ( 312) passes through the middle of the long rod extrusion plate (310), a bowl-shaped extrusion block (313) is provided at the center of the bottom of the long rod extrusion plate (310), the axial symmetry center of the bowl-shaped extrusion block (313) coincides with the axial symmetry center of the rotating disk (36), the rolling ball (317) at the top of the sliding contact column (316) fits the inner arc surface of the bowl-shaped extrusion block (313), the top of the bowl-shaped extrusion block (313) is fixedly connected with a sliding rod (314), the sliding rod (314) passes through the middle of the fixed plate (311), a first spring (315) is provided between the fixed plate (311) and the bowl-shaped extrusion block (313), the first spring (315) is passed through by the sliding rod (314), and the top of the fixed plate (311) is fixedly connected to the top of the leakage collection port (34).

2. The screening and crushing integrated seedling tray centralized feeding device according to claim 1, characterized in that: A leaked material collection port (34) is provided on the outlet side of the first conveyor belt (31), and a fixed column (33) is provided on the leaked material collection port (34). The fixed column (33) is fixedly connected to the upper left side of the material receiving and screening box (41). Material guard plates (35) are provided on the upper sides of both sides of the first conveyor belt (31), and a first worm gear motor (32) is connected to the right side of the first conveyor belt (31).

3. The screening and crushing integrated seedling tray centralized feeding device according to claim 1, characterized in that: A rectangular support plate (44) is provided inside the material receiving and screening box (41), a screening plate (42) is provided above the rectangular support plate (44), a through coarse screening frame (45) and a fine screening frame (46) are provided at the bottom of the material receiving and screening box (41), a leveling frame (47) is fixedly connected between the coarse screening frame (45) and the fine screening frame (46), a loading plate (48) is connected at the center of the top of the material receiving and screening box (41), a groove is opened in the middle of the loading plate (48), a floating scraper plate (49) is placed in the groove, an adjusting nut (410) is provided at the top of the floating scraper plate (49), and the bottom of the adjusting nut (410) contacts the top of the loading plate (48).

4. The screening and crushing integrated seedling tray centralized feeding device according to claim 3, characterized in that: The sieve plate (42) is placed obliquely, and two sets of third springs (43) are provided between the sieve plate (42) and the rectangular support plate (44) below the leakage collection port (34). The other side of the sieve plate (42) is rotatably connected to the rectangular support plate (44) via a hinge (411).

5. The screening and crushing integrated seedling tray centralized feeding device according to claim 1, characterized in that: A material collecting frame (52) is placed on the second conveyor belt (51), and a second worm gear motor (53) is connected to the side of the second conveyor belt (51).

6. The screening and crushing integrated seedling tray centralized feeding device according to claim 1, characterized in that: The elevator (6) includes a material collecting cover (66) fixed to the bottom frame (11) on the side of the second conveyor belt (51), the material collecting cover (66) is fixedly connected to the transmission frame (61), a transmission chain (63) is provided in the transmission frame (61), a plurality of material scrapers (62) are mounted above the transmission chain (63), the bottom of the transmission chain (63) is connected to the rotating shaft of the third worm gear motor (64), the third worm gear motor (64) is placed on the outside of the material collecting cover (66), and the outside of the transmission frame (61) is wrapped with a first dust cover (65).

7. The screening and crushing integrated seedling tray centralized feeding device according to claim 6, characterized in that: The crushing mechanism (7) includes a crushed material collecting trough (79), the crushed material collecting trough (79) is arranged at the end of the material receiving and screening box (41), a crushed material conveyor belt (71) is provided at the discharge port of the crushed material collecting trough (79), the outer side of the crushed material conveyor belt (71) is wrapped with a second dust cover (73), a fixing frame (74) is provided at the bottom of the second dust cover (73), the fixing frame (74) is fixedly connected to the bottom frame (11), the bottom of the crushed material conveyor belt (71) is connected to a fourth worm gear motor (72), the fourth worm gear motor (72) is placed on the second dust cover A crushing material box (75) is provided at the end of the crushing material conveyor belt (71) outside the cover (73). The crushing material box (75) is placed above the material receiving box (2). Fourth connecting columns (18) are provided on both sides of the crushing material box (75). The fourth connecting columns (18) are fixedly connected to the top of the material receiving box (2). The bottom of the crushing material box (75) is connected. Two groups of crushing wheels (77) are provided inside the crushing material box (75). A fifth worm motor (76) is provided on one side of the two groups of crushing wheels (77). The other side of the two groups of crushing wheels (77) is fixedly connected to a transmission gear (78) that meshes with each other.

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