CN110809974A

CN110809974A - Automatic chemical fertilizer spreading device

Info

Publication number: CN110809974A
Application number: CN201910859133.7A
Authority: CN
Inventors: 池文凯
Original assignee: Pizhou Jiukou Business And Trade Co Ltd
Current assignee: Pizhou Jiukou Business And Trade Co Ltd
Priority date: 2019-12-26
Filing date: 2019-12-26
Publication date: 2020-02-21

Abstract

The invention relates to the technical field of agricultural production, in particular to an automatic fertilizer spreading device which can automatically spread a fertilizer, improve the fertilizer spreading efficiency and reduce the labor cost, thereby improving the agricultural production benefit; including the backup pad, the chemical fertilizer case, two sets of support columns, four group's head rods, two sets of first horizontal poles, two sets of carriage release levers, two sets of gyro wheels, two sets of bar bars, four groups's second connecting rod, two sets of second horizontal poles, scatter the motor, carousel and fixed cover, the central authorities at the backup pad top are fixed to the chemical fertilizer bottom of the case portion, the inside chemical fertilizer chamber that is provided with of chemical fertilizer case, the left side top intercommunication of chemical fertilizer case is provided with the charge door, the charge door inner cup is installed and is provided with the charge plate, the bottom intercommunication of chemical fertilizer case is provided with first discharge gate, the middle part of backup pad is provided with the second discharge gate, the bottom intercommunication of first discharge gate is provided with the discharging pipe, the discharging pipe passes the second discharge gate and is located the below of backup pad.

Description

Automatic chemical fertilizer spreading device

Technical Field

The invention relates to the technical field of agricultural production, in particular to an automatic fertilizer spreading device.

Background

As is well known, china is a large population of countries, and food production plays an important role in the development of agricultural production. The fertilizer can not only improve the soil fertility, but also is an important product for improving the yield of crops per unit area, so the fertilizer is the most basic and important substance input in agricultural production. Nowadays, the mode of fertilization mostly still adopts the mode of manual work scattering to lead to fertilization efficiency lower and the cost of labor higher, influenced agricultural production's benefit.

Disclosure of Invention

Technical problem to be solved

Aiming at the defects of the prior art, the invention provides an automatic fertilizer spreading device which can automatically spread a fertilizer, improve the fertilizer spreading efficiency, reduce the labor cost and further improve the agricultural production benefit.

(II) technical scheme

In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides an automatic device that scatters of chemical fertilizer, including the backup pad, the chemical fertilizer case, two sets of support columns, four groups of head rods, two sets of first horizontal poles, two sets of carriage release levers, two sets of gyro wheels, two sets of handrail poles, four groups of second connecting rods, two sets of second horizontal poles, scatter the motor, carousel and fixed cover, chemical fertilizer bottom of the case portion is fixed at the central authorities at backup pad top, chemical fertilizer incasement portion is provided with the chemical fertilizer chamber, chemical fertilizer case's left side top intercommunication is provided with the charge door, the charge door lid is installed and is equipped with the charge plate, chemical fertilizer case's bottom intercommunication is provided with first discharge gate, the middle part of backup pad is provided with the second discharge gate, the bottom intercommunication of first discharge gate is provided with the discharging pipe, the discharging pipe passes the second discharge gate and is located the below of backup pad, the top of two groups of support columns is fixed respectively in the right, The left end and the right end of one group of first cross rods in the two groups of first cross rods are respectively connected with the bottoms of the two groups of first connecting rods positioned on the front side of the supporting plate, the left end and the right end of the other group of cross rods in the two groups of first cross rods are respectively connected with the bottoms of the two groups of first connecting rods positioned on the rear side of the supporting plate, the tops of the two groups of moving rods are respectively connected with the centers of the two groups of first cross rods at the bottom of the two groups of first cross rods, the centers of the two groups of rollers are respectively connected with the bottoms of the two groups of moving rods in a rotating manner, the bottoms of the two groups of handrail rods are respectively connected with the front side and the rear side on the right side of the supporting plate, the tops of the four groups of second connecting rods are respectively fixed on the left front side, the right side, the left rear side and the right side of the two groups of second cross rods are respectively connected with the bottoms of the two groups of second connecting rods positioned on the front side of the supporting plate, and the left end The bottom of to connect, the front side and the rear side of scattering the motor are connected in two sets of second horizontal poles respectively, the bottom central authorities of carousel are connected with the output of scattering the motor top, the carousel is located the below of discharging pipe, the left front side of carousel, right front side, left rear side and right rear side are provided with the multiunit breach, fixed cover top central authorities are provided with fixed mouthful, the bottom and the fixed mouthful intercommunication of discharging pipe, fixed cover is located the top of carousel, the inboard of fixed cover contacts with the outside of carousel, the front side and the right side of fixed cover are provided with two sets of mouths of scattering respectively.

Preferably, still including the motor of smashing in advance, chemical fertilizer case top central authorities intercommunication are provided with the mouth of smashing in advance, and the top at the chemical fertilizer case is fixed to the motor bottom of smashing in advance, and the output of the motor bottom of smashing in advance is provided with the transmission shaft, and the transmission shaft passes the mouth of smashing in advance and stretches into the chemical fertilizer incasement, is provided with the multiunit blade of smashing in advance on the transmission shaft uniformly.

Preferably, still include watering case, watering pump and watering shower nozzle, the left side in the backup pad is fixed to watering bottom, and the watering case is located the left side of chemical fertilizer case, and the inside of watering case is provided with the watering chamber, and the top intercommunication of watering case is provided with the delivery port, and the top at the watering case is fixed to the watering pump bottom, and the end intercommunication of intaking of watering pump bottom is provided with the inlet tube, and the inlet tube passes the delivery port and stretches into in the watering case, and the end intercommunication of intaking and the play water end at watering pump top of watering shower nozzle.

Preferably, still include regulating plate and regulation pole, the right side intercommunication of discharging pipe is provided with the regulation hole, and the bottom and the regulation hole intercommunication of chemical fertilizer case are provided with the regulation through-hole, and the left side of regulating plate passes the inside of adjusting through-hole and regulation hole and stretching into the discharging pipe respectively, and the bottom mounting of adjusting the pole is on the right side of regulating plate.

Preferably, still include the guard box, the front side and the rear side of guard box are connected in the rear side of the second horizontal pole that is located the backup pad front side and the front side of the second horizontal pole that is located the backup pad rear side respectively, and the inside of guard box is provided with the guard chamber, and the motor of scattering is located the guard box inside, and the top intercommunication of guard box is provided with the protection mouth, and the output of the motor of scattering passes the protection mouth and is connected with the carousel bottom.

Preferably, the discharging pipe further comprises a connecting ring and a cover plate, the inner side of the connecting ring is sleeved outside the discharging pipe, the connecting ring is located below the supporting plate and located above the fixed cover, the cover plate is of an inverted L shape, the right end of the cover plate is connected with the left side of the connecting ring, and the lower portion of the cover plate is in contact with the left side of the fixed cover.

Preferably, still include the glass board, the right side intercommunication of chemical fertilizer case is provided with the viewing aperture, and the glass board is fixed in the viewing aperture.

Preferably, a plurality of groups of convex blocks are uniformly arranged on the outer sides of the two groups of rollers respectively.

(III) advantageous effects

Compared with the prior art, the invention provides an automatic fertilizer spreading device, which has the following beneficial effects:

this automatic device of scattering of chemical fertilizer, add the chemical fertilizer incasement through opening the charging plate, then close the charging plate, then drive the carousel at the inside rotation of fixed cover through scattering the motor, and simultaneously, the chemical fertilizer passes through the discharging pipe and falls down on the carousel naturally, then receives the effect of carousel centrifugal force, and the chemical fertilizer is rotatory to the inside wall department of carousel, when the breach of carousel rotate with fixed covering spread mouthful coincidence, the chemical fertilizer throws away the carousel through the effect of centrifugal force, thereby makes the chemical fertilizer scatter the both sides of device, simultaneously, promotes through the manpower the device is walked in the field, thereby accomplishes the automatic fertilization operation to the soil, thereby improves the efficiency of scattering of chemical fertilizer, reduces the cost of labor who fertilizies, thereby improves agricultural production's benefit.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a left side view of the present invention;

FIG. 3 is an enlarged view of part A of the structural schematic of the present invention;

in the drawings, the reference numbers: 1. a support plate; 2. a fertilizer box; 3. a support pillar; 4. a first connecting rod; 5. a first cross bar; 6. a travel bar; 7. a roller; 8. a grab rail; 9. a second connecting rod; 10. a second cross bar; 11. sowing the motor; 12. a turntable; 13. a fixed cover; 14. a feed plate; 15. a discharge pipe; 16. pre-crushing a motor; 17. a drive shaft; 18. pre-crushing the leaves; 19. a water sprinkling tank; 20. a water sprinkling pump; 21. a sprinkler head; 22. a water inlet pipe; 23. an adjusting plate; 24. adjusting a rod; 25. a protection box; 26. a connecting ring; 27. a cover plate; 28. a glass plate; 29. and (4) a convex block.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-3, the present invention provides an automatic fertilizer spreader, which comprises a supporting plate 1, a fertilizer box 2, two supporting columns 3, four groups of first connecting rods 4, two groups of first cross rods 5, and two groups of moving rods 6, the fertilizer spreading machine comprises two groups of rollers 7, two groups of grab bars 8, four groups of second connecting rods 9, two groups of second cross rods 10, a spreading motor 11, a rotary table 12 and a fixed cover 13, wherein the bottom of a fertilizer box 2 is fixed at the center of the top of a supporting plate 1, a fertilizer cavity is arranged inside the fertilizer box 2, the top of the left side of the fertilizer box 2 is communicated with a feed inlet, a feed plate 14 is arranged in the feed inlet in a covered mode, the fertilizer spreading machine also comprises a glass plate 28, the right side of the fertilizer box 2 is communicated with an observation port, the glass plate 28 is fixed in the observation port, and the residual amount of fertilizer in the fertilizer box 2 can be observed through the glass plate 28, so that the fertilizer can be supplemented into the fertilizer box 2 in; the fertilizer applying machine also comprises a pre-crushing motor 16, wherein the center of the top of the fertilizer box 2 is communicated with a pre-crushing opening, the bottom of the pre-crushing motor 16 is fixed at the top of the fertilizer box 2, the output end of the bottom of the pre-crushing motor 16 is provided with a transmission shaft 17, the transmission shaft 17 penetrates through the pre-crushing opening and extends into the fertilizer box 2, a plurality of groups of pre-crushing blades 18 are uniformly arranged on the transmission shaft 17, and in the fertilizer applying process, the transmission shaft 17 is driven to rotate by the pre-crushing motor 16, so that the fertilizer is crushed by the groups of pre-crushing blades 18, and the fertilizer can be changed into smaller particles before being spread, and the absorption speed of crops; the bottom of the chemical fertilizer box 2 is communicated with a first discharge hole, the middle of the supporting plate 1 is provided with a second discharge hole, the bottom of the first discharge hole is communicated with a discharge pipe 15, the discharge pipe 15 penetrates through the second discharge hole and is positioned below the supporting plate 1, the chemical fertilizer box further comprises an adjusting plate 23 and an adjusting rod 24, the right side of the discharge pipe 15 is communicated with an adjusting hole, the bottom of the chemical fertilizer box 2 is communicated with the adjusting hole and is provided with an adjusting through hole, the left side of the adjusting plate 23 respectively penetrates through the adjusting through hole and the adjusting hole and extends into the discharge pipe 15, the bottom end of the adjusting rod 24 is fixed on the right side of the adjusting plate 23, the size of a discharge area in the discharge pipe 15 can be changed by moving the adjusting plate 24 and the adjusting plate 23 under the action, so that the discharge speed of; the tops of two groups of supporting columns 3 are respectively fixed on the right front side and the right rear side of the bottom of the supporting plate 1, the tops of four groups of first connecting rods 4 are respectively fixed on the left front side, the right front side, the left rear side and the right rear side of the bottom of the supporting plate 1, the left end and the right end of one group of first cross rods 5 in two groups of first cross rods 5 are respectively connected with the bottoms of two groups of first connecting rods 4 positioned on the front side of the supporting plate 1, the left end and the right end of the other group of cross rods in two groups of first cross rods 5 are respectively connected with the bottoms of two groups of first connecting rods 4 positioned on the rear side of the supporting plate 1, the tops of two groups of moving rods 6 are respectively connected with the centers of two groups of rollers 7 at the bottoms of centers of the two groups of first cross rods 5, the centers of the two groups of rollers 7 are respectively and uniformly provided with a plurality of convex blocks 29, and the friction force of, thereby preventing the rollers 7 from sinking into the soil when the device is in use; the bottom ends of two groups of handrail rods 8 are respectively connected with the front side and the rear side of the right side of the supporting plate 1, the top ends of four groups of second connecting rods 9 are respectively fixed on the left front side, the right front side, the left rear side and the right rear side of the bottom of the supporting plate 1, the left ends and the right ends of two groups of second cross rods 10 in two groups of second cross rods 10 are respectively connected with the bottoms of two groups of second connecting rods 9 positioned on the front side of the supporting plate 1, the left ends and the right ends of the other two groups of cross rods in two groups of second cross rods 10 are respectively connected with the bottoms of two groups of second connecting rods 9 positioned on the rear side of the supporting plate 1, the front side and the rear side of the sowing motor 11 are respectively connected with the two groups of second cross rods 10, the sowing motor further comprises a protective box 25, the front side and the rear side of the protective box 25 are respectively connected with the rear side of the second cross rods 10 positioned on the front side of the supporting plate 1, the sowing motor 11 is positioned in the protection box 25, the top of the protection box 25 is communicated with a protection opening, the output end of the sowing motor 11 penetrates through the protection opening and is connected with the bottom of the rotary disc 12, and the protection box 25 can reduce the influence of soil, dust and the like on the sowing motor 11, so that the stability and the service life of the sowing motor 11 are improved; the center of the bottom of the rotary disc 12 is connected with the output end of the top of the sowing motor 11, the rotary disc 12 is positioned below the discharge pipe 15, a plurality of groups of notches are arranged on the left front side, the right front side, the left rear side and the right rear side of the rotary disc 12, a fixed opening is arranged in the center of the top of the fixed cover 13, the bottom end of the discharge pipe 15 is communicated with the fixed opening, the fixed cover 13 is positioned above the rotary disc 12, the inner side of the fixed cover 13 is contacted with the outer side of the rotary disc 12, two groups of sowing openings are respectively arranged on the front side and the right side of the fixed cover 13, the discharging pipe further comprises a connecting ring 26 and a cover plate 27, the inner side of the connecting ring 26 is sleeved outside the discharge pipe 15, the connecting ring 26 is positioned below the support plate 1, the connecting ring 26 is positioned above the fixed cover 13, the cover plate 27 is inverted L; the cover plate 27 can rotate around the discharging pipe 15 by rotating the connecting ring 26, so that the sowing openings on the fixed cover 13 can be covered by the cover plate 27, and the fertilizer can be sowed only through one sowing opening of the two groups of sowing openings, thereby improving the flexibility of the device in use; chemical fertilizer is added into the chemical fertilizer box 2 by opening the feeding plate 14, then the feeding plate 14 is closed, then the spreading motor 11 drives the rotary table 12 to rotate in the fixed cover 13, meanwhile, the chemical fertilizer naturally falls onto the rotary table 12 through the discharge pipe 15, then under the action of centrifugal force of the rotary table 12, the chemical fertilizer rotates to the inner side wall of the rotary table 12, when the gap of the rotary table 12 rotates to coincide with the spreading port on the fixed cover 13, the chemical fertilizer is thrown out of the rotary table 12 under the action of the centrifugal force, so that the chemical fertilizer is spread to two sides of the device, and meanwhile, the device is pushed by manpower to walk in the field, so that automatic fertilizing operation on the land is completed, thereby improving the spreading efficiency of the chemical fertilizer, reducing the labor cost of the fertilizing, and improving the benefit of agricultural production; the chemical fertilizer spraying device is characterized by further comprising a water spraying tank 19, a water spraying pump 20 and a water spraying nozzle 21, wherein the bottom of the water spraying tank 19 is fixed on the left side of the supporting plate 1, the water spraying tank 19 is located on the left side of the chemical fertilizer box 2, a water spraying cavity is formed in the water spraying tank 19, the top of the water spraying tank 19 is communicated with a water outlet, the bottom of the water spraying pump 20 is fixed on the top of the water spraying tank 19, a water inlet end of the bottom of the water spraying pump 20 is communicated with a water inlet pipe 22, the water inlet pipe 22 penetrates through the water outlet and extends into the water spraying tank 19, and a water inlet end of the water spraying nozzle 21 is; can use watering shower nozzle 21 to carry out the watering operation at the fertilization in-process through watering pump 20, the better infiltration of chemical fertilizer is in the soil when through watering to improve the absorption rate of crops to the chemical fertilizer.

When using, open the charging plate and add the chemical fertilizer incasement with the chemical fertilizer, then close the charging plate, then drive the carousel at the inside rotation of fixed cover through scattering the motor, simultaneously, the chemical fertilizer passes through the discharging pipe and falls down on the carousel naturally, then receives the effect of carousel centrifugal force, and the chemical fertilizer is rotatory to the inside wall department of carousel, and when the breach of carousel rotated to with fixed the mouth of scattering of covering coincide, the chemical fertilizer throws the carousel through the effect of centrifugal force to make the chemical fertilizer scatter the both sides of device, simultaneously, promote through the manpower the device is walked in the field to the completion is to the automatic fertilization operation on the soil, simultaneously, can be through the watering pump when fertilizing to the both sides watering of device improves the fertilization effect.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

The electrical components presented in the document are all electrically connected with an external master controller and 220V mains, and the master controller can be a conventional known device controlled by a computer or the like.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. An automatic fertilizer spreading device is characterized by comprising a supporting plate (1), a fertilizer box (2), two groups of supporting columns (3), four groups of first connecting rods (4), two groups of first cross rods (5), two groups of moving rods (6), two groups of rollers (7), two groups of handrail rods (8), four groups of second connecting rods (9), two groups of second cross rods (10), a spreading motor (11), a rotary table (12) and a fixing cover (13), wherein the bottom of the fertilizer box (2) is fixed in the center of the top of the supporting plate (1), a fertilizer cavity is arranged inside the fertilizer box (2), the top of the left side of the fertilizer box (2) is communicated with a feed opening, a feed plate (14) is arranged in the feed opening, the bottom of the fertilizer box (2) is communicated with a first discharge hole, a second discharge hole is arranged in the middle of the supporting plate (1), and a first discharge pipe (15) is communicated with the bottom of the first discharge hole, the discharge pipe (15) penetrates through the second discharge hole and is positioned below the support plate (1), the tops of two groups of support columns (3) are respectively fixed on the right front side and the right rear side of the bottom of the support plate (1), the tops of four groups of connecting rods (4) are respectively fixed on the left front side, the right front side, the left rear side and the right rear side of the bottom of the support plate (1), the left end and the right end of one group of first cross rods (5) in the two groups of first cross rods (5) are respectively connected with the bottoms of the two groups of connecting rods (4) positioned on the front side of the support plate (1), the left end and the right end of the other group of cross rods in the two groups of first cross rods (5) are respectively connected with the bottoms of the two groups of first cross rods (4) positioned on the rear side of the support plate (1), the tops of the two groups of moving rods (6) are respectively connected with the centers of the two groups of rollers (7) are respectively connected with the bottoms of the moving, the bottom ends of the two groups of handrail rods (8) are respectively connected with the front side and the rear side on the right side of the supporting plate (1), the top ends of the four groups of second connecting rods (9) are respectively fixed on the left front side, the right front side, the left rear side and the right rear side of the bottom of the supporting plate (1), the left ends and the right ends of the two groups of second cross rods (10) in the two groups of second cross rods (10) are respectively connected with the bottom of the two groups of second connecting rods (9) on the front side of the supporting plate (1), the left ends and the right ends of the other two groups of cross rods in the two groups of second cross rods (10) are respectively connected with the bottom of the two groups of second connecting rods (9) on the rear side of the supporting plate (1), the front side and the rear side of the sowing motor (11) are respectively connected with the two groups of second cross rods (10), the bottom center of the rotary table (12) is connected with the output end at the top of the sowing motor (11), the rotary table (, The right front side, the left rear side and the right rear side are provided with a plurality of groups of notches, a fixed opening is formed in the center of the top of the fixed cover (13), the bottom end of the discharge pipe (15) is communicated with the fixed opening, the fixed cover (13) is located above the rotary table (12), the inner side of the fixed cover (13) is in contact with the outer side of the rotary table (12), and the front side and the right side of the fixed cover (13) are respectively provided with two groups of scattering openings.

2. The automatic fertilizer spreading device of claim 1, further comprising a pre-crushing motor (16), wherein a pre-crushing opening is formed in the center of the top of the chemical fertilizer box (2) in a communicated manner, the bottom of the pre-crushing motor (16) is fixed to the top of the chemical fertilizer box (2), a transmission shaft (17) is arranged at the output end of the bottom of the pre-crushing motor (16), the transmission shaft (17) penetrates through the pre-crushing opening and extends into the chemical fertilizer box (2), and a plurality of groups of pre-crushing blades (18) are uniformly arranged on the transmission shaft (17).

3. The automatic fertilizer spreading device of claim 1, further comprising a water sprinkling tank (19), a water sprinkling pump (20) and a water sprinkling nozzle (21), wherein the bottom of the water sprinkling tank (19) is fixed on the left side of the support plate (1), the water sprinkling tank (19) is positioned on the left side of the fertilizer box (2), a water sprinkling cavity is arranged inside the water sprinkling tank (19), a water outlet is formed in the top of the water sprinkling tank (19) in a communicating manner, the bottom of the water sprinkling pump (20) is fixed on the top of the water sprinkling tank (19), a water inlet end of the bottom of the water sprinkling pump (20) is provided with a water inlet pipe (22) in a communicating manner, the water inlet pipe (22) penetrates through the water outlet and extends into the water sprinkling tank (19), and a water inlet end of the water sprinkling nozzle (21) is communicated with a water outlet end of the.

4. The automatic fertilizer spreading device of claim 1, further comprising an adjusting plate (23) and an adjusting rod (24), wherein the right side of the discharging pipe (15) is communicated with an adjusting hole, the bottom of the fertilizer box (2) is communicated with the adjusting hole to form an adjusting through hole, the left side of the adjusting plate (23) penetrates through the adjusting through hole and the adjusting hole respectively and extends into the discharging pipe (15), and the bottom end of the adjusting rod (24) is fixed on the right side of the adjusting plate (23).

5. The automatic fertilizer spreading device of claim 1, further comprising a protection box (25), wherein the front side and the rear side of the protection box (25) are respectively connected with the rear side of the second cross rod (10) positioned at the front side of the support plate (1) and the front side of the second cross rod (10) positioned at the rear side of the support plate (1), a protection cavity is arranged inside the protection box (25), the spreading motor (11) is positioned inside the protection box (25), a protection opening is communicated with the top of the protection box (25), and the output end of the spreading motor (11) penetrates through the protection opening and is connected with the bottom of the turntable (12).

6. The automatic fertilizer spreading device of claim 1, further comprising a connecting ring (26) and a cover plate (27), wherein the connecting ring (26) is sleeved outside the discharging pipe (15) at the inner side of the connecting ring (26), the connecting ring (26) is located below the supporting plate (1), the connecting ring (26) is located above the fixed cover (13), the cover plate (27) is of an inverted L shape, the right end of the cover plate (27) is connected with the left side of the connecting ring (26), and the lower portion of the cover plate (27) is in contact with the left side of the fixed cover (13).

7. The automatic fertilizer spreading device as claimed in claim 1, further comprising a glass plate (28), wherein the right side of the fertilizer box (2) is provided with an observation port in a communicating manner, and the glass plate (28) is fixed in the observation port.

8. The automatic fertilizer spreading device as claimed in claim 1, wherein a plurality of groups of raised blocks (29) are uniformly arranged on the outer sides of the two groups of rollers (7) respectively.