Dryer for fertilizer preparation

Abstract

The utility model relates to a dryer for fertilizer preparation, which comprises a spiral conveying component, a hot air output component, a drying structure, a pretreatment device, a connecting component and a vent pipe, the spiral conveying component is connected with the pretreatment device, the pretreatment device is connected with the hot air output component through the vent pipe, and the hot air output component is connected with the drying structure through the connecting component. The pretreatment device is connected with the upper end of the drying structure and comprises a feeding barrel connected with the spiral conveying assembly through a feeding port, the periphery of the feeding barrel is wrapped with an air inlet pipe, the air inlet pipe is connected with the hot air output assembly through a ventilation pipe, a second mounting plate is mounted at the left end of the feeding barrel, and a driving structure is mounted on the second mounting plate. A feeding structure is arranged in a feeding barrel and connected with a driving structure, a discharging opening is formed in the right end of an air inlet pipe, and the discharging opening is connected with the upper end of a drying structure. The fertilizer drying machine solves the problem that an existing drying machine cannot quickly dry fertilizer.

Description

Technical Field

[0001] The utility model relates to the technical field of fertilizer production equipment, in particular to a drying machine for fertilizer preparation. Background Art

[0002] In the preparation of fertilizers, a dryer is an indispensable device. Existing dryers are generally composed of feeding, heating and blowing, and drying structures, but the drying efficiency of existing dryers is not high.

[0003] In order to solve the above problems, Chinese patent CN208751194U, a fertilizer drying equipment points out that the isolation liner and isolation plate are made of microporous ceramics with air permeability and water absorption, which can improve the drying efficiency. The hot air is allowed to flow in a circular direction inside the heating space through the air guide plate and the air guide holes, which increases the wind pressure of the hot air, makes it easier for the hot air to enter the working space, and further improves the drying efficiency.

[0004] Although the above document improves the drying effect of fertilizers, there are still certain problems. The document does not set up a pretreatment device, which greatly reduces the drying efficiency. Secondly, due to the excessive concentration of fertilizer particles when drying the fertilizer, the drying efficiency is reduced. Therefore, in order to solve the above problems, a dryer for fertilizer preparation is specially proposed. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides a drying machine for preparing fertilizers, which solves the problem that the prior drying machines cannot quickly dry the fertilizers.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a dryer for preparing fertilizer, comprising a spiral conveying component, a hot air output component, a drying structure, a pre-processing device, a connecting component, and a ventilation pipe, wherein the spiral conveying component is connected to the pre-processing device, the pre-processing device is connected to the hot air output component through the ventilation pipe, the hot air output component is connected to the drying structure through the connecting component, the pre-processing device is connected to the upper end of the drying structure, the pre-processing device comprises a feed barrel connected to the spiral conveying component through a feed inlet, the outer periphery of the feed barrel is wrapped with an air intake pipe, and the air intake pipe passes through the ventilation pipe It is connected to the hot air output component, and a second mounting plate is installed on the left end of the feed barrel, and a driving structure is installed on the second mounting plate. A feeding structure is provided in the feed barrel, and the feeding structure is connected to the driving structure. A discharge opening is provided at the right end of the air inlet pipe, and the discharge opening is connected to the upper end of the drying structure. The drying structure includes a second mounting frame and a drying box body, a crushing structure is provided at the upper end of the drying box body, and the upper end of the crushing structure is connected to the discharge opening. A hot air inlet is provided in the drying box body, and fertilizer striking structures are staggered on the inner wall of the drying box body, and a vibration structure is provided between the second mounting frame and the drying box body.

[0007] Through the above technical scheme, further, the fertilizer striking structure includes a connector installed on the inner wall of the drying box, one group of connectors is movably installed with a striking plate, and a connector is provided at the lower end of the striking plate, and another group of connectors is movably installed with an electric push rod, and the telescopic end of the electric push rod is connected to the connector installed at the lower end of the striking plate, and the upper and lower adjacent groups of fertilizer striking structures are staggered and distributed, and a hot air inlet is opened between the two.

[0008] Furthermore, the crushing structure includes a feed plate installed at the upper end of the drying box, a second servo motor is installed at the rear end of the feed plate, the output end of the second servo motor extends into the feed plate and crushing rods are distributed on the surface, and the upper end of the feed plate is bolted to the discharge opening.

[0009] As a preferred technical solution, the vibration structure includes a first mounting plate installed on a second mounting frame and located under a drying box body, a movable plate is movably installed between the first mounting plate and the second mounting frame, a plurality of groups of transverse plates are laterally installed on the surface of the movable plate, and shafts are symmetrically installed at the front and rear ends of the movable plate, a bearing is installed on the outer end surface of the shaft, the bearing is movable between the striking plate and the first mounting plate, and a plurality of groups of transverse plates are longitudinally distributed on the surface of the first mounting plate.

[0010] Furthermore, the vibration structure also includes a third servo motor installed at the right end of the striking plate, the output end of the third servo motor is connected to a driving wheel, the driving wheel is connected to the movable plate through a connecting rod, a discharging funnel is installed in the second mounting frame, a discharging plate is also installed in the second mounting frame below the discharging funnel, and a guide plate is installed on the inner wall corresponding to the feed plate in the drying box, and the guide plate faces the upper surface of the striking plate.

[0011] As a preferred technical solution, the driving structure includes a fourth servo motor mounted on the second mounting plate, a pulley is installed at the output end of the fourth servo motor, a bearing seat is provided at the upper end of the second mounting plate, and the pulley is connected to the feeding structure through a transmission belt.

[0012] Furthermore, the feeding structure includes a conveying shaft installed on the upper end of the second mounting plate through a bearing seat and extending into the feeding barrel. A spiral feeding plate is installed on the surface of the conveying shaft located in the feeding barrel.

[0013] As a preferred technical solution, the connecting component includes a second connecting plate installed at the air outlet port of the hot air output component, a vertical connecting plate is provided at the right end of the second connecting plate, the end face of the vertical connecting plate is connected to an air supply plate, and the air supply plate is arranged corresponding to the hot air inlet.

[0014] Furthermore, the hot air output component includes a centrifugal fan, a heating plate is installed on the upper end of the centrifugal fan, the upper end of the heating plate is connected to a first connecting plate, the upper end of the first connecting plate is connected to a ventilation pipe, and the right end of the first connecting plate is connected to a second connecting plate.

[0015] As a preferred technical solution, the spiral conveying assembly includes a first mounting frame, a feed funnel is installed on the first mounting frame, a conveying pipe is connected to the lower end of the feed funnel, a support rod is provided on the surface of the conveying pipe, a first servo motor is installed on the top of the conveying pipe, the first servo motor is connected to a spiral feed plate installed in the conveying pipe, a discharge port is provided on the top surface of the conveying pipe, and the discharge port is connected to the spiral feed plate.

[0016] Compared with the prior art, the utility model provides a dryer for preparing fertilizer, which has the following beneficial effects:

[0017] 1. First, the fertilizer enters the pre-treatment device through the spiral conveying assembly. Because the air inlet pipe in the pre-treatment device wraps the feed barrel and is connected to the hot air output assembly, the feed barrel can be heated, so that the fertilizer can be heated first to evaporate the moisture on the surface of the fertilizer, increase the drying efficiency, and shorten the drying time.

[0018] 2. The fertilizer enters the drying structure through the pre-treatment device, and first passes through the breaking structure to break up the fertilizers that are stuck together, thereby improving the drying efficiency. Secondly, it flows into the striking plate through the guide plate, and the electric push rod drives the striking plate to move up and down, so that its surface can hit the fertilizer and throw it onto another group of striking plates. During the throwing process, the fertilizer is dried through the action of the hot air inlet.

[0019] 3. After processing, the fertilizer flows downward into the vibration structure, which further vibrates the fertilizer. At this time, the hot air flows downward, and the fertilizer is dried again in the process of further breaking up, thereby improving the drying efficiency of the fertilizer and shortening the drying time. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the structure of a drying machine for fertilizer preparation according to the utility model;

[0021] Figure 2 This is a schematic diagram of a spiral conveying assembly of a dryer for fertilizer preparation according to the utility model;

[0022] Figure 3 This is a schematic diagram of the pre-treatment structure of a drying machine for fertilizer preparation according to the utility model;

[0023] Figure 4 This is a left view schematic diagram of the pre-treatment structure of a dryer for fertilizer preparation according to the utility model;

[0024] Figure 5 The utility model is a drying machine for preparing fertilizer Figure 4 AA cross-sectional view of ;

[0025] Figure 6 This is a schematic diagram of a connection assembly of a dryer for fertilizer preparation according to the utility model;

[0026] Figure 7 This is a schematic diagram of a hot air output component of a dryer for fertilizer preparation according to the utility model;

[0027] Figure 8 This is a front view schematic diagram of a drying structure of a dryer for fertilizer preparation according to the utility model;

[0028] Fig. 9 The utility model is a drying machine for preparing fertilizer Figure 8 AA cross-sectional view of ;

[0029] Fig.10 The utility model is a drying machine for preparing fertilizer Fig. 9 A local enlarged structural schematic diagram;

[0030] Fig.11 The utility model is a drying machine for preparing fertilizer Fig. 9 Schematic diagram of the local structure at B;

[0031] Fig.12 This is a schematic diagram of the vibration structure of a dryer for fertilizer preparation according to the utility model;

[0032] Fig.13 The utility model is a schematic diagram of the structure of a movable plate of a dryer for preparing fertilizer.

[0033] In the figure: 1. spiral conveying assembly; 101. first mounting frame; 102. feeding hopper; 103. conveying pipe; 104. supporting rod; 105. first servo motor; 106. discharging port; 2. hot air output assembly; 201. centrifugal fan; 202. heating plate; 203. first connecting plate; 3. drying structure; 301. second mounting frame; 302. drying box; 303. discharging hopper; 304. discharging plate; 305. second servo motor; 306. feeding plate; 307. breaking rod; 308. guiding plate; 309. connecting body; 310. striking plate; 311. electric push rod; 312. hot air inlet Air port; 313, first mounting plate; 314, third servo motor; 315, driving wheel; 316, connecting rod; 317, movable plate; 318, transverse plate; 319, shaft; 320, bearing; 4, pre-treatment device; 401, feed barrel; 402, feed port; 403, air inlet pipe; 404, discharge opening; 405, second mounting plate; 406, fourth servo motor; 407, pulley; 408, transmission belt; 409, bearing seat; 410, conveying shaft; 411, spiral feed plate; 5, connecting assembly; 501, second connecting plate; 502, vertical connecting plate; 503, air supply plate; 6, ventilation pipe. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0035] Example

[0036] See also Figure 1-13 The utility model provides the following technical solutions: a dryer for preparing fertilizers, comprising a spiral conveying component 1, a hot air output component 2, a drying structure 3, a pre-processing device 4, a connecting component 5, and a ventilation pipe 6, wherein the spiral conveying component 1 is connected to the pre-processing device 4, the pre-processing device 4 is connected to the hot air output component 2 through the ventilation pipe 6, the hot air output component 2 is connected to the drying structure 3 through the connecting component 5, the pre-processing device 4 is connected to the upper end of the drying structure 3, the pre-processing device 4 comprises a feed barrel 401 connected to the spiral conveying component 1 through a feed port 402, the feed barrel 401 is wrapped with an air intake pipe 403, the air intake pipe 403 is connected to the hot air output component 2 through the ventilation pipe 6, and A second mounting plate 405 is installed at the left end of the feed barrel 401, and a driving structure is installed on the second mounting plate 405. A feed structure is provided in the feed barrel 401, and the feed structure is connected to the driving structure. A discharge opening 404 is provided at the right end of the air inlet pipe 403, and the discharge opening 404 is connected to the upper end of the drying structure 3. The drying structure 3 includes a second mounting frame 301 and a drying box body 302. A crushing structure is provided at the upper end of the drying box body 302, and the upper end of the crushing structure is connected to the discharge opening 404. A hot air inlet 312 is provided in the drying box body 302, and fertilizer striking structures are staggered on the inner wall of the drying box body 302, and a vibration structure is provided between the second mounting frame 301 and the drying box body 302.

[0037] In this embodiment, the specific working principle is as follows: the user of the dryer for preparing fertilizer pours the fertilizer into the spiral conveying component 1, and then the fertilizer enters the pre-treatment device 4, and the feed barrel 401 is wrapped by the air inlet pipe 403. Since the air inlet pipe 403 is connected to the hot air output component 2, the fertilizer entering the feed barrel 401 can be pre-treated and heated to evaporate part of its water, and then enter the drying structure 3, first through the breaking structure, the fertilizer that is stuck is broken up, so that the subsequent drying process is easier, and then it enters the striking structure, the striking structure strikes the fertilizer so that the fertilizer can move along a parabolic trajectory, and then enter. The fertilizer is put into another group of striking structures, and then struck and fell in turn, and a hot air inlet 312 is opened on the inner wall of the drying box 302 between the two groups of striking structures, so that the fertilizer in the striking process can be dried. At this time, since the fertilizer is in bulk, the fertilizer can be dried to the maximum extent. The dried fertilizer falls onto the vibrating structure and the fertilizer is screened and vibrated. In this process, the hot air in the drying box 302 will be blown out from the bottom to further dry the fertilizer being screened and vibrated, thereby ensuring the drying efficiency of the fertilizer, greatly shortening the drying time, and solving the problem that the existing dryer cannot quickly dry the fertilizer.

[0038] According to the above, how the fertilizer striking structure realizes the striking of fertilizers can be found in Fig. 9 and Fig.11 It can be seen that the fertilizer striking structure includes a connector 309 installed on the inner wall of the drying box 302, one group of connectors 309 is movably installed with a striking plate 310, and a connector 309 is provided at the lower end of the striking plate 310, and another group of connectors 309 is movably installed with an electric push rod 311, and the telescopic end of the electric push rod 311 is connected to the connector 309 installed at the lower end of the striking plate 310. The upper and lower adjacent groups of fertilizer striking structures are staggered, and a hot air inlet 312 is opened between the two. When the fertilizer passes through the crushing structure and is introduced onto the striking plate 310 through the guide plate 308, the striking plate 310 will realize the up and down swing by driving the push rod 311, so that the striking plate 310 will strike the fertilizer during the upward swinging process, and can also make the fertilizer thrown upward and then fall onto another striking plate 310. After the fertilizer is struck upward, the fertilizer is in bulk, which makes it easier to dry the fertilizer.

[0039] According to the above, in order to prevent the fertilizer from sticking when entering the drying structure 3, please refer to Fig. 9 and Fig.10It can be seen that the crushing structure includes a feed plate 306 installed at the upper end of the drying box 302, and a second servo motor 305 is installed at the rear end of the feed plate 306. The output end of the second servo motor 305 extends into the feed plate 306 and crushing rods 307 are distributed on the surface. The upper end of the feed plate 306 is bolted to the discharge opening 404. The second servo motor 305 rotates through the output end, thereby driving the crushing rod 307 to rotate at a high speed, so that the fertilizer can be crushed, thereby preventing incomplete drying due to the adhesion of the fertilizer.

[0040] In order to further prevent the fertilizer from retaining moisture and causing incomplete drying, please refer to Fig.12 and Fig.13 It can be seen that the vibration structure includes a first mounting plate 313 mounted on the second mounting frame 301 and located under the drying box body 302, a movable plate 317 is movably mounted between the first mounting plate 313 and the second mounting frame 301, a plurality of sets of transverse plates 318 are transversely mounted on the surface of the movable plate 317, and shafts 319 are symmetrically mounted on the front and rear ends of the movable plate 317, a bearing 320 is mounted on the outer end surface of the shaft 319, the bearing 320 is movable between the striking plate 310 and the first mounting plate 313, and a plurality of sets of transverse plates 318 are longitudinally distributed on the surface of the first mounting plate 313. First of all, it needs to be clarified that, The hot air enters the drying box 302 and flows downward, so the vibration here has two functions. One is that the fertilizer is further hit and bounces around during the vibration process, further drying the fertilizer. Specifically, through the first mounting plate 313 and the movable plate 317, the movable plate 317 moves left and right, so that the fertilizer can slowly fall downward, thereby further completing the drying effect on the fertilizer. In order to ensure the smooth movement of the movable plate 317, the bearing 302 is used to ensure that the movable plate 317 can move smoothly left and right.

[0041] Secondly, how the movable plate 317 moves left and right can be found in detail. Fig.13 It can be seen that the vibration structure also includes a third servo motor 314 installed at the right end of the striking plate 310, and the output end of the third servo motor 314 is connected to a driving wheel 315, and the driving wheel 315 is connected to the movable plate 317 through a connecting rod 316. The third servo motor 314 drives the driving wheel 315 to rotate, and the protrusion on the end surface of the driving wheel 315 is connected to the movable plate 317. During the rotation process, the movable plate 317 will move left and right, and in order to facilitate the movement of the dried fertilizer, a discharge funnel 303 is installed in the second mounting frame 301, and a discharge plate 304 is also installed below the discharge funnel 303 in the second mounting frame 301. Secondly, in order to enable the fertilizer to enter the striking structure through the crushing structure, please refer to Fig. 9 and Fig.10It can be seen that a guide plate 308 is installed at the inner wall corresponding to the feed plate 306 in the drying box body 302, and the guide plate 308 faces the upper surface of the striking plate 310.

[0042] The driving structure in the pre-processing structure 4 can be specifically referred to Figure 3 and Figure 5 It can be seen that the driving structure includes a fourth servo motor 406 installed on the second mounting plate 405, a pulley 407 is installed at the output end of the fourth servo motor 406, a bearing seat 409 is provided at the upper end of the second mounting plate 405, and the pulley 407 is connected to the feeding structure through a transmission belt 408.

[0043] According to the above, the feeding structure in the pre-processing structure 4 can be specifically referred to Figure 3 and Figure 5 It can be seen that the feeding structure includes a conveying shaft 410 installed on the upper end of the second mounting plate 405 through a bearing seat 409 and extending into the feed barrel 401. A spiral feeding plate 411 is installed on the surface of the conveying shaft 410 located in the feed barrel 401.

[0044] See also Figure 1 and Figure 5 It can be seen that the connecting component 5 includes a second connecting plate 501 installed at the air outlet port of the hot air output component 2, and a vertical connecting plate 502 is provided at the right end of the second connecting plate 501. The vertical connecting plate 502 has an end face connected to an air supply plate 503, and the air supply plate 503 is arranged corresponding to the hot air inlet 312.

[0045] See also Figure 1 and Figure 7 It can be seen that the hot air output component 2 includes a centrifugal fan 201, a heating plate 202 is installed on the upper end of the centrifugal fan 201, the upper end of the heating plate 202 is connected to the first connecting plate 203, the upper end of the first connecting plate 203 is connected to the ventilation pipe 6, and the right end of the first connecting plate 203 is connected to the second connecting plate 501.

[0046] See also Figure 1 and Figure 2 It can be seen that the spiral conveying assembly 1 includes a first mounting frame 101, a feed funnel 102 is installed on the first mounting frame 101, a conveying pipe 103 is connected to the lower end of the feed funnel 102, a support rod 104 is provided on the surface of the conveying pipe 103, a first servo motor 105 is installed on the top of the conveying pipe 103, the first servo motor 105 is connected to a spiral feed plate installed in the conveying pipe 103, a discharge port 106 is provided on the top surface of the conveying pipe 103, and the discharge port 106 is connected to the spiral feed plate 411.

[0047] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A dryer for preparing fertilizer, comprising a spiral conveying assembly (1), a hot air output assembly (2), a drying structure (3), a pre-processing device (4), a connecting assembly (5), and a ventilation pipe (6), wherein the spiral conveying assembly (1) is connected to the pre-processing device (4), the pre-processing device (4) is connected to the hot air output assembly (2) through the ventilation pipe (6), the hot air output assembly (2) is connected to the drying structure (3) through the connecting assembly (5), and the pre-processing device (4) is connected to the upper end of the drying structure (3), characterized in that: The pre-treatment device (4) comprises a feed barrel (401) connected to the spiral conveying assembly (1) through a feed port (402), an air intake pipe (403) wrapped around the outer periphery of the feed barrel (401), the air intake pipe (403) being connected to the hot air output assembly (2) through a ventilation pipe (6), and a second mounting plate (405) being installed at the left end of the feed barrel (401), a driving structure being installed on the second mounting plate (405), a feed structure being arranged in the feed barrel (401), the feed structure being connected to the driving structure, and a right end of the air intake pipe (403) being opened. A discharge opening (404) is provided, and the discharge opening (404) is connected to the upper end of the drying structure (3). The drying structure (3) comprises a second mounting frame (301) and a drying box (302). A crushing structure is provided at the upper end of the drying box (302), and the upper end of the crushing structure is connected to the discharge opening (404). A hot air inlet (312) is provided in the drying box (302), and fertilizer striking structures are staggeredly distributed on the inner wall of the drying box (302), and a vibration structure is provided between the second mounting frame (301) and the drying box (302).

2. A dryer for preparing fertilizer according to claim 1, characterized in that: The fertilizer striking structure comprises a connector (309) installed on the inner wall of a drying box (302), one group of connectors (309) being movably mounted with a striking plate (310), the lower end of the striking plate (310) being provided with a connector (309), and another group of connectors (309) being movably mounted with an electric push rod (311), the telescopic end of the electric push rod (311) being connected to the connector (309) installed at the lower end of the striking plate (310), the upper and lower adjacent groups of fertilizer striking structures being staggered, and a hot air inlet (312) being provided between the two.

3. A dryer for preparing fertilizer according to claim 1, characterized in that: The crushing structure comprises a feed plate (306) installed at the upper end of the drying box (302), a second servo motor (305) is installed at the rear end of the feed plate (306), an output end of the second servo motor (305) extends into the feed plate (306) and crushing rods (307) are distributed on the surface, and the upper end of the feed plate (306) is bolted to the discharge opening (404).

4. A dryer for preparing fertilizer according to claim 1, characterized in that: The vibration structure comprises a first mounting plate (313) mounted on a second mounting frame (301) and located below a drying box body (302); a movable plate (317) is movably mounted between the first mounting plate (313) and the second mounting frame (301); a plurality of groups of transverse plates (318) are transversely mounted on the surface of the movable plate (317); shafts (319) are symmetrically mounted at the front and rear ends of the movable plate (317); a bearing (320) is mounted on the outer end surface of the shaft (319); the bearing (320) is movably mounted between the striking plate (310) and the first mounting plate (313); and a plurality of groups of transverse plates (318) are longitudinally distributed on the surface of the first mounting plate (313).

5. A dryer for preparing fertilizer according to claim 1, characterized in that: The vibration structure also includes a third servo motor (314) installed at the right end of the striking plate (310), the output end of the third servo motor (314) is connected to a driving wheel (315), and the driving wheel (315) is connected to the movable plate (317) through a connecting rod (316). A discharge funnel (303) is installed in the second mounting frame (301), and a discharge plate (304) is also installed in the second mounting frame (301) below the discharge funnel (303). A guide plate (308) is installed at the inner wall corresponding to the feed plate (306) in the drying box body (302), and the guide plate (308) faces the upper surface of the striking plate (310).

6. A drying machine for preparing fertilizer according to claim 1, characterized in that: The driving structure comprises a fourth servo motor (406) mounted on a second mounting plate (405), a pulley (407) being mounted on an output end of the fourth servo motor (406), a bearing seat (409) being disposed on an upper end of the second mounting plate (405), and the pulley (407) being connected to the feeding structure via a transmission belt (408).

7. A dryer for preparing fertilizer according to claim 1, characterized in that: The feeding structure includes a conveying shaft (410) mounted on the upper end of the second mounting plate (405) via a bearing seat (409) and extending into the feeding barrel (401). A spiral feeding plate (411) is mounted on the surface of the conveying shaft (410) located in the feeding barrel (401).

8. A drying machine for preparing fertilizer according to claim 1, characterized in that: The connection assembly (5) comprises a second connection plate (501) installed at the air outlet port of the hot air output assembly (2); a vertical connection plate (502) is provided at the right end of the second connection plate (501); an end surface of the vertical connection plate (502) is connected to an air delivery plate (503); and the air delivery plate (503) is provided corresponding to the hot air inlet (312).

9. A drying machine for preparing fertilizer according to claim 1, characterized in that: The hot air output assembly (2) comprises a centrifugal fan (201), a heating plate (202) is mounted on the upper end of the centrifugal fan (201), a first connecting plate (203) is connected to the upper end of the heating plate (202), a ventilation pipe (6) is connected to the upper end of the first connecting plate (203), and a second connecting plate (501) is connected to the right end of the first connecting plate (203).

10. A dryer for preparing fertilizer according to claim 1, characterized in that: The screw conveying assembly (1) comprises a first mounting frame (101), a feeding hopper (102) is mounted on the first mounting frame (101), a conveying pipe (103) is connected to the lower end of the feeding hopper (102), a support rod (104) is provided on the surface of the conveying pipe (103), a first servo motor (105) is mounted on the top of the conveying pipe (103), the first servo motor (105) is connected to a screw feeding plate mounted in the conveying pipe (103), a discharge port (106) is provided on the top surface of the conveying pipe (103), and the discharge port (106) is connected to the screw feeding plate (411).

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