Compound fertilizer drying device

Abstract

The utility model belongs to the technical field of compound fertilizer production, in particular to a compound fertilizer drying device, comprising a silo bucket and four instrument air pipes; one end of the instrument air pipe is fixedly connected to the silo bucket; one side of the instrument air pipe is fixedly connected to a solenoid valve; the bottom of the silo bucket is fixedly connected to a discharging pipe; a cover plate is arranged on the top of the silo bucket; a guide slide bar is fixedly connected to the top of the cover plate; a guide slider is slidably connected to the surface of the guide slider; a servo motor is fixedly connected to one side of the guide slider; a threaded cap is fixedly connected to the top of the cover plate; the problem that in the process of compound fertilizer production, the temperature of the compound fertilizer can still reach 40-45°C before being packaged in a storage bin after two cooling stages, and at this temperature, it is not conducive to the long-term storage of the compound fertilizer, resulting in the compaction of the compound fertilizer and adverse effects on product quality is solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of compound fertilizer production, in particular to a compound fertilizer drying device. Background Art

[0002] Compound fertilizer is a kind of fertilizer containing two or more nutrients required for plant growth. According to the production process, compound fertilizer can be divided into two categories: chemical synthetic compound fertilizer and physical mixed compound fertilizer (compound fertilizer). Chemical synthetic compound fertilizer is synthesized by chemical reaction, while physical mixed compound fertilizer is made by mixing different fertilizers by physical means.

[0003] The compound fertilizer drying device in the existing technology is a device specially used for drying compound fertilizers. It can effectively remove moisture from the fertilizer to ensure the quality and storage stability of the fertilizer. The drying device usually includes two major parts: a working box and an auxiliary drying device. The working box is provided with a feed bin, a heating bin and a storage bin from top to bottom, and the auxiliary drying device includes an air inlet pipe, a heater, an air guide pipe, an exhaust fan and a feeding pipe.

[0004] However, in the production process of compound fertilizer, the temperature of the compound fertilizer can still reach 40℃-45℃ before packaging in the storage bin after two cooling stages. At this temperature, it is not conducive to the long-term storage of the compound fertilizer, causing the compound fertilizer to become hardened, which has an adverse effect on the product quality. Therefore, a compound fertilizer drying device is proposed to address the above problems. Utility Model Content

[0005] In order to make up for the deficiencies of the prior art and solve at least one technical problem raised in the background technology, the utility model proposes a compound fertilizer drying device.

[0006] The technical solution adopted by the utility model to solve the technical problem is as follows: the compound fertilizer drying device of the utility model comprises a silo bucket and four instrument air pipes; one end of the instrument air pipe is fixedly connected to the silo bucket; one side of the instrument air pipe is fixedly connected to a solenoid valve; the bottom of the silo bucket is fixedly connected to a discharge pipe; a cover plate is provided on the top of the silo bucket; a guide slide bar is fixedly connected to the top of the cover plate; a guide slider is slidably connected to the surface of the guide slider; a servo motor is fixedly connected to one side of the guide slider; a threaded cap is fixedly connected to the top of the cover plate; a screw rod is fixedly connected to the output end of the servo motor; a screw rod is fixedly connected to the screw rod; a screw rod is fixedly connected to the output end of the servo motor ... The surface of the rod is threadedly connected to the threaded cap; a movable column is fixedly connected to the bottom of the screw rod; a number of flipping and stirring rods are fixedly connected to the surface of the movable column; a first connecting rod is fixedly connected to both sides of the servo motor; a second connecting rod is fixedly connected to one end of the first connecting rod; an annular movable plate is fixedly connected to the bottom of the second connecting rod; a telescopic column is fixedly connected to the surface of the annular movable plate; a spring is sleeved on the surface of the telescopic column; the spring is in a compressed state; an annular cleaning scraper is fixedly connected to one end of the telescopic column; the annular cleaning scraper is in contact with the inner wall of the silo bucket; a feed pipe is fixedly connected to the top of the cover plate.

[0007] Preferably, a third connecting rod is fixedly connected to the bottom of the flip stirring rod; an anti-blocking rod is fixedly connected to the surface of the third connecting rod; the shape of the third connecting rod is arc-shaped, and one side of the third connecting rod is in contact with the inner wall of the discharge pipe; the number of anti-blocking rods is several; and the anti-blocking rods are evenly distributed on the surface of the third connecting rod.

[0008] Preferably, four heat exhaust pipes are fixedly connected to the top of the cover plate; a fixing rod is fixedly connected to the inner wall of the heat exhaust pipe; a heat exhaust motor is fixedly connected to one end of the fixing rod; a heat exhaust fan blade is fixedly connected to the output end of the heat exhaust motor; and the heat exhaust pipes are evenly distributed at the four corners of the top of the cover plate.

[0009] Preferably, a filter screen is provided on the top of the heat exhaust pipe; two connection blocks are fixedly connected to the surface of the filter screen; fixing studs are fixedly connected to the surface of the connection block; and the surface of the fixing studs is threadedly connected to the top of the heat exhaust pipe.

[0010] Preferably, the surface of the cover plate is fixedly connected to the first fixing plate; the bottom plate of the first fixing plate is fixedly connected to the clamping rod; the surface of the silo bucket is fixedly connected to the second fixing plate; the clamping rod is embedded in the second fixing plate; one side of the second fixing plate is fixedly connected to a connecting plate; the surface of the connecting plate is threadedly connected to a limiting stud; the surface of the limiting stud is threadedly connected to the clamping rod.

[0011] Preferably, a fixed block is fixedly connected to one side of the second fixed plate; an electric telescopic rod is fixedly connected to the top of the fixed block; a limiting pressure block is fixedly connected to the output end of the electric telescopic rod; and the limiting pressure block is used in conjunction with the first fixed plate and the second fixed plate.

[0012] Preferably, the top end of the guide slide rod is threadedly connected with a limit baffle; the limit baffle is circular in shape; the limit baffle is used in conjunction with the guide slide block.

[0013] Preferably, two movable notches are provided on the top of the cover plate; the movable notches are used in conjunction with the second connecting rod.

[0014] Preferably, there are several telescopic columns and springs; the springs and telescopic columns are evenly distributed between the annular moving plate and the annular cleaning scraper.

[0015] Beneficial effects of the utility model:

[0016] The utility model provides a compound fertilizer drying device. When the compound fertilizer enters the hopper through the feed pipe, the user starts the electromagnetic valve to make the instrument air pipe blow air into the hopper, and then the user starts the servo motor to rotate forward and reversely. The servo motor drives the screw rod to rotate forward and reversely. The screw rod cooperates with the threaded cap to make the screw rod rotate and move up and down. The screw rod drives the movable column to rotate and move up and down. The movable column drives the turning stirring rod to rotate and turn the compound fertilizer up and down, so that the compound fertilizer and the cooling gas blown in by the instrument air pipe are evenly combined to cool down. At the same time, the servo motor slides up and down on the guide slide rod through the screw rod. The servo motor The first connecting rod is driven to move up and down, the first connecting rod drives the second connecting rod to move up and down, the second connecting rod drives the annular movable plate to move up and down, the annular movable plate drives the annular cleaning scraper to move up and down, and under the action of the telescopic column and the spring, the annular cleaning scraper is always in contact with the inner wall of the silo bucket, so that the annular cleaning scraper is always scraping the inner wall of the silo bucket back and forth, so that the compound fertilizer is quickly cooled, dissipated and dried, reducing the residue of compound fertilizer on the inner wall of the silo bucket, making it convenient for users to use, reducing the impact on the back side of the compound fertilizer packaging, and facilitating the long-term storage of the compound fertilizer and reducing the occurrence of compound fertilizer agglomeration.

[0017] The utility model provides a compound fertilizer drying device, which drives the third connecting rod to move up and down and rotate forward and backward when the stirring rod is flipped forward and backward, and the third connecting rod flips the compound fertilizer on the discharge pipe up and down. At the same time, the third connecting rod drives the anti-blocking rod to rotate, and the anti-blocking rod stirs the compound fertilizer on the discharge pipe, thereby preventing the discharge pipe from being blocked, reducing the probability of the discharge pipe being blocked. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three-dimensional diagram of the utility model;

[0019] Figure 2 It is a cutaway stereoscopic diagram of the silo bucket and the cover plate in the utility model;

[0020] Figure 3 It is a front view and cutaway perspective view of the compound fertilizer drying device in the utility model;

[0021] Figure 4This utility model Figure 2 A partial stereogram of

[0022] Figure 5 It is a three-dimensional diagram of the internal structure of the compound fertilizer drying device in the utility model;

[0023] Figure 6 This utility model Figure 5 A sectional perspective view of

[0024] Figure 7 It is a top view and a sectional stereoscopic view of the compound fertilizer drying device in the utility model;

[0025] Figure 8 It is a partial three-dimensional diagram of the cooperation between the annular moving plate and the annular cleaning scraper in the utility model;

[0026] Fig. 9 This is the working pipe network diagram of the instrument air pipe in this utility model

[0027] Legend:

[0028] 1. Bin hopper; 101. Instrument air pipe; 102. Solenoid valve; 103. Discharge pipe; 104. Guide slide bar; 105. Guide slide block; 106. Servo motor; 107. Threaded cap; 108. Feed pipe; 109. Cover plate; 110. Screw rod; 111. Movable column; 112. Flip stirring rod; 113. First connecting rod; 114. Second connecting rod; 115. Annular moving plate; 116. Telescopic column; 117. Spring; 118. Annular Cleaning scraper; 2. Third connecting rod; 201. Anti-blocking rod; 3. Heat exhaust pipe; 301. Fixed rod; 302. Heat exhaust motor; 303. Heat exhaust fan blade; 4. Filter screen; 401. Connecting block; 402. Fixed stud; 5. First fixing plate; 501. Second fixing plate; 502. Clamping rod; 503. Connecting plate; 504. Limiting stud; 6. Fixed block; 601. Electric telescopic rod; 602. Limiting pressure block; 7. Limiting baffle; 8. Movable notch. DETAILED DESCRIPTION

[0029] See also Figure 1 - Figure 8The utility model provides a compound fertilizer drying device, including a silo hopper 1 and four instrument air pipes 101; one end of the instrument air pipe 101 is fixedly connected to the silo hopper 1; a solenoid valve 102 is fixedly connected to one side of the instrument air pipe 101; a discharge pipe 103 is fixedly connected to the bottom of the silo hopper 1; a cover plate 109 is provided on the top of the silo hopper 1; a guide slide bar 104 is fixedly connected to the top of the cover plate 109; a guide slider 105 is slidably connected to the surface of the guide slide bar 104; a servo motor 106 is fixedly connected to one side of the guide slider 105; a threaded cap 107 is fixedly connected to the top of the cover plate 109; a screw rod 110 is fixedly connected to the output end of the servo motor 106; the surface of the screw rod 110 is threadedly connected to the threaded cap 107; a movable column 111 is fixedly connected to the bottom of the screw rod 110; the surface of the movable column 111 The surface is fixedly connected with a plurality of flip stirring rods 112; both sides of the servo motor 106 are fixedly connected with a first connecting rod 113; one end of the first connecting rod 113 is fixedly connected with a second connecting rod 114; the bottom of the second connecting rod 114 is fixedly connected with an annular moving plate 115; the surface of the annular moving plate 115 is fixedly connected with a telescopic column 116; the surface of the telescopic column 116 is sleeved with a spring 117; the spring 117 is in a compressed state; one end of the telescopic column 116 is fixedly connected with an annular cleaning scraper 118; the annular cleaning scraper 118 is in contact with the inner wall of the silo hopper 1; the top of the cover plate 109 is fixedly connected with a feed pipe 108; the number of telescopic columns 116 and springs 117 is several; the springs 117 and the telescopic columns 116 are evenly distributed between the annular moving plate 115 and the annular cleaning scraper 118;During operation, after the compound fertilizer enters the silo hopper 1 through the feed pipe 108, the user starts the solenoid valve 102 to blow air from the instrument air pipe 101 into the silo hopper 1, and then starts the servo motor 106 to rotate forward and reversely, and the servo motor 106 drives the screw rod 110 to rotate forward and reversely, and the screw rod 110 cooperates with the threaded cap 107 to rotate and move up and down, and the screw rod 110 drives the movable column 111 to rotate and move up and down, and the movable column 111 drives the stirring rod 112 to rotate and turn the compound fertilizer up and down, so that the compound fertilizer and the cooling gas blown in from the instrument air pipe 101 are evenly combined to cool down, and at the same time, the servo motor 106 slides up and down on the guide slide bar 104 through the screw rod 110, and the servo The motor 106 drives the first connecting rod 113 to move up and down, the first connecting rod 113 drives the second connecting rod 114 to move up and down, the second connecting rod 114 drives the annular moving plate 115 to move up and down, the annular moving plate 115 drives the annular cleaning scraper 118 to move up and down, under the action of the telescopic column 116 and the spring 117, the annular cleaning scraper 118 always fits with the inner wall of the silo bucket 1, so that the annular cleaning scraper 118 always scrapes the inner wall of the silo bucket 1 back and forth, so that the compound fertilizer is quickly cooled, dissipated and dried, reducing the residue of compound fertilizer on the inner wall of the silo bucket 1, which is convenient for users to use, reduces the impact on the rear side of the compound fertilizer packaging, is conducive to the long-term storage of the compound fertilizer, and reduces the occurrence of compound fertilizer agglomeration. ;

[0030] Further, such as Figure 3 and Figure 5 As shown, the bottom of the flipping stirring rod 112 is fixedly connected to the third connecting rod 2; the surface of the third connecting rod 2 is fixedly connected to the anti-blocking rod 201; the shape of the third connecting rod 2 is arc-shaped, and one side of the third connecting rod 2 is in contact with the inner wall of the discharge pipe 103; the number of anti-blocking rods 201 is several; the anti-blocking rods 201 are evenly distributed on the surface of the third connecting rod 2; when working, the flipping stirring rod 112 drives the third connecting rod 2 to move up and down and rotate forward and backward, and the third connecting rod 2 flips the compound fertilizer on the discharge pipe 103 up and down, and at the same time, the third connecting rod 2 drives the anti-blocking rod 201 to rotate, and the anti-blocking rod 201 stirs the compound fertilizer on the discharge pipe 103, thereby preventing the discharge pipe 103 from being blocked, reducing the probability of the discharge pipe 103 being blocked.

[0031] Further, such as Figure 2 and Figure 4As shown, four heat exhaust pipes 3 are fixedly connected to the top of the cover plate 109; a fixing rod 301 is fixedly connected to the inner wall of the heat exhaust pipe 3; one end of the fixing rod 301 is fixedly connected to a heat exhaust motor 302; the output end of the heat exhaust motor 302 is fixedly connected to a heat exhaust fan blade 303; the heat exhaust pipes 3 are evenly distributed at the four corners of the top of the cover plate 109; when working, the user starts the heat exhaust motor 302; the heat exhaust motor 302 drives the heat exhaust fan blade 303 to rotate, so that air flows, discharges the heat in the silo bucket 1, assists in heat dissipation in the silo bucket 1, and makes the compound fertilizer cool quickly, thereby improving the cooling effect.

[0032] Further, such as Figure 4 As shown, a filter screen plate 4 is arranged on the top of the heat exhaust pipe 3; two connecting blocks 401 are fixedly connected to the surface of the filter screen plate 4; fixing studs 402 are fixedly connected to the surface of the connecting block 401; the surface of the fixing studs 402 is threadedly connected to the top of the heat exhaust pipe 3; when working, the filter screen plate 4 can filter the air and shield the heat exhaust pipe 3 at the same time to prevent debris from falling into the heat exhaust pipe 3 and affecting the heat exhaust of the heat exhaust pipe 3; at the same time, the connecting blocks 401 and the fixing studs 402 are arranged, so that the filter screen plate 4 can be disassembled and replaced.

[0033] Further, such as Figure 3 and Figure 5 As shown, the surface of the cover plate 109 is fixedly connected to the first fixing plate 5; the bottom plate of the first fixing plate 5 is fixedly connected to the clamping rod 502; the surface of the silo bucket 1 is fixedly connected to the second fixing plate 501; the clamping rod 502 is embedded in the second fixing plate 501; one side of the second fixing plate 501 is fixedly connected to the connecting plate 503; the surface of the connecting plate 503 is threadedly connected to the limiting stud 504; the surface of the limiting stud 504 is threadedly connected to the clamping rod 502; during operation, the user makes the clamping rod 502 on the first fixing plate 5 be stuck into the second fixing plate 501, and then the user rotates the limiting stud 504 so that the limiting stud 504 is threadedly connected to the clamping rod 502, thereby fixing the cover plate 109 and reducing the movement of the cover plate 109. At the same time, when it is necessary to open the cover plate 109, the user rotates the limiting stud 504 so that the limiting stud 504 is away from the clamping rod 502, and then the user opens the cover plate 109, and the user can penetrate the internal situation of the silo bucket 1.

[0034] Further, such as Figure 5As shown, a fixing block 6 is fixedly connected to one side of the second fixing plate 501; an electric telescopic rod 601 is fixedly connected to the top of the fixing block 6; an output end of the electric telescopic rod 601 is fixedly connected to a limiting pressure block 602; the limiting pressure block 602 is used in conjunction with the first fixing plate 5 and the second fixing plate 501; when working, the user starts the electric telescopic rod 601, and the electric telescopic rod 601 drives the limiting pressure block 602 to move, so that the limiting card pressure block presses the first fixing plate 5, so that the connection between the first fixing plate 5 and the second fixing plate 501 is better, so that the sealing effect between the cover plate 109 and the silo hopper 1 is better,

[0035] Further, such as Figure 1 As shown, the top end of the guide slide bar 104 is threadedly connected to the limit baffle 7; the limit baffle 7 is circular in shape; the limit baffle 7 is used in conjunction with the guide slider 105; when working, the limit baffle 7 blocks and limits the guide slider 105, so that the guide slider 105 always remains on the guide slide bar 104, reducing the probability of the guide sliding off the guide slide bar 104, thereby reducing the impact on the operation of the servo motor 106.

[0036] Further, such as Figure 1 As shown, two movable notches 8 are provided on the top of the cover plate 109; the movable notches 8 are used in conjunction with the second connecting rod 114; during operation, the second connecting rod 114 moves on the movable notches 8, which reduces the wear of the second connecting rod 114, provides the second connecting rod 114 with movable space, and prolongs the service life of the second movable rod.

[0037] Working principle: When the compound fertilizer enters the silo hopper 1 through the feed pipe 108, the user starts the solenoid valve 102 to blow air from the instrument air pipe 101 into the silo hopper 1, and then starts the servo motor 106 to rotate forward and reversely, and the servo motor 106 drives the screw rod 110 to rotate forward and reversely, and the screw rod 110 cooperates with the threaded cap 107 to rotate and move up and down, and the screw rod 110 drives the movable column 111 to rotate and move up and down, and the movable column 111 drives the stirring rod 112 to rotate and turn the compound fertilizer up and down, so that the compound fertilizer and the instrument air pipe 101 The cooling gas blown in is evenly combined with cooling and temperature reduction. At the same time, the servo motor 106 slides up and down on the guide slide bar 104 through the screw rod 110. The servo motor 106 drives the first connecting rod 113 to move up and down. The first connecting rod 113 drives the second connecting rod 114 to move up and down. The second connecting rod 114 drives the annular moving plate 115 to move up and down. The annular moving plate 115 drives the annular cleaning scraper 118 to move up and down. Under the action of the telescopic column 116 and the spring 117, the annular cleaning scraper 118 is always in contact with the inner wall of the silo bucket 1, so that the annular cleaning scraper 118 is 8 always scrapes the inner wall of the silo bucket 1 back and forth, so that the compound fertilizer is quickly cooled, dissipated and dried, reducing the residue of the compound fertilizer on the inner wall of the silo bucket 1, which is convenient for users to use, reduces the impact of the compound fertilizer after packaging, is conducive to the long-term storage of the compound fertilizer, and reduces the occurrence of compound fertilizer agglomeration. At the same time, the third connecting rod 2 is driven to rotate forward and reversely when the stirring rod 112 is turned up and down, and the third connecting rod 2 turns the compound fertilizer on the discharge pipe 103 up and down. At the same time, the third connecting rod 2 drives the anti-blocking rod 201 to rotate, and the anti-blocking rod 201 is turned on the discharge pipe 103. The compound fertilizer on 3 is stirred, thereby preventing the discharge pipe 103 from being blocked, reducing the probability of the discharge pipe 103 being blocked, the limit baffle 7 blocks and limits the guide slider 105, so that the guide slider 105 is always kept on the guide slide bar 104, reducing the probability of the guide slider 105 being separated from the guide slide bar 104, thereby reducing the impact on the operation of the servo motor 106, and the second connecting rod 114 is movable and movable on the movable notch 8, reducing the wear of the second connecting rod 114, allowing the second connecting rod 114 to have a movable space, and extending the service life of the second movable rod.

[0038] When the user starts the heat exhaust motor 302, the heat exhaust motor 302 drives the heat exhaust fan blades 303 to rotate, so that air flows to discharge the heat in the silo bucket 1, assists in the heat dissipation in the silo bucket 1, and makes the compound fertilizer cool quickly, thereby improving the cooling effect. The filter plate 4 can filter the air and shield the heat exhaust pipe 3 at the same time to prevent debris from falling into the heat exhaust pipe 3 and affecting the heat exhaust of the heat exhaust pipe 3. At the same time, a connecting block 401 and a fixing stud 402 are provided to enable the filter plate 4 to be disassembled and replaced.

[0039] When it is necessary to observe the inside of the silo bucket, the user makes the clamping rod 502 on the first fixed plate 5 clamped into the second fixed plate 501, and then the user rotates the limiting stud 504 to make the limiting stud 504 and the clamping rod 502 threadedly connected, thereby fixing the cover plate 109 and reducing the movement of the cover plate 109. At the same time, when it is necessary to open the cover plate 109, the user rotates the limiting stud 504 to make the limiting stud 504 away from the clamping rod 502. Then, the user opens the cover plate 109 and the user can observe the internal situation of the silo bucket 1. The user starts the electric telescopic rod 601, and the electric telescopic rod 601 drives the limiting pressure block 602 to move, so that the limiting pressure block presses the first fixed plate 5, so that the connection between the first fixed plate 5 and the second fixed plate 501 is better, thereby making the sealing effect between the cover plate 109 and the silo bucket 1 better.

[0040] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.

Claims

1. A compound fertilizer drying device, comprising a silo hopper (1) and four instrument air pipes (101); characterized in that: One end of the instrument air pipe (101) is fixedly connected to the silo hopper (1); one side of the instrument air pipe (101) is fixedly connected to a solenoid valve (102); the bottom of the silo hopper (1) is fixedly connected to a discharge pipe (103); a cover plate (109) is provided on the top of the silo hopper (1); a guide slide bar (104) is fixedly connected to the top of the cover plate (109); a guide slider (105) is slidably connected to the surface of the guide slide bar (104); a servo motor (106) is fixedly connected to one side of the guide slider (105); a threaded cap (107) is fixedly connected to the top of the cover plate (109); a screw rod (110) is fixedly connected to the output end of the servo motor (106); the surface of the screw rod (110) is threadedly connected to the threaded cap (107); the bottom of the screw rod (110) is fixedly connected to a movable The movable column (111) is fixedly connected to the surface of the movable column (111) with a plurality of flip stirring rods (112); the first connecting rod (113) is fixedly connected to both sides of the servo motor (106); one end of the first connecting rod (113) is fixedly connected to the second connecting rod (114); the bottom of the second connecting rod (114) is fixedly connected to an annular movable plate (115); the surface of the annular movable plate (115) is fixedly connected to a telescopic column (116); the surface of the telescopic column (116) is sleeved with a spring (117); the spring (117) is in a compressed state; one end of the telescopic column (116) is fixedly connected to an annular cleaning scraper (118); the annular cleaning scraper (118) contacts the inner wall of the silo hopper (1); the top of the cover plate (109) is fixedly connected to a feed pipe (108).

2. The compound fertilizer drying device according to claim 1, characterized in that: The bottom of the flip stirring rod (112) is fixedly connected to a third connecting rod (2); the surface of the third connecting rod (2) is fixedly connected to an anti-blocking rod (201); the shape of the third connecting rod (2) is an arc shape, and one side of the third connecting rod (2) is in contact with the inner wall of the discharge pipe (103); the number of the anti-blocking rods (201) is several; and the anti-blocking rods (201) are evenly distributed on the surface of the third connecting rod (2).

3. The compound fertilizer drying device according to claim 1, characterized in that: Four heat exhaust pipes (3) are fixedly connected to the top of the cover plate (109); a fixing rod (301) is fixedly connected to the inner wall of the heat exhaust pipe (3); one end of the fixing rod (301) is fixedly connected to a heat exhaust motor (302); an output end of the heat exhaust motor (302) is fixedly connected to a heat exhaust fan blade (303); and the heat exhaust pipes (3) are evenly distributed at the four corners of the top of the cover plate (109).

4. The compound fertilizer drying device according to claim 3, characterized in that: A filter screen (4) is provided on the top of the heat exhaust pipe (3); two connection blocks (401) are fixedly connected to the surface of the filter screen (4); a fixing stud (402) is fixedly connected to the surface of the connection block (401); and the surface of the fixing stud (402) is threadedly connected to the top of the heat exhaust pipe (3).

5. The compound fertilizer drying device according to claim 1, characterized in that: The surface of the cover plate (109) is fixedly connected to a first fixing plate (5); the bottom plate of the first fixing plate (5) is fixedly connected to a clamping rod (502); the surface of the silo hopper (1) is fixedly connected to a second fixing plate (501); the clamping rod (502) is embedded in the second fixing plate (501); one side of the second fixing plate (501) is fixedly connected to a connecting plate (503); the surface of the connecting plate (503) is threadedly connected to a limiting stud (504); and the surface of the limiting stud (504) is threadedly connected to the clamping rod (502).

6. The compound fertilizer drying device according to claim 5, characterized in that: A fixing block (6) is fixedly connected to one side of the second fixing plate (501); an electric telescopic rod (601) is fixedly connected to the top of the fixing block (6); an output end of the electric telescopic rod (601) is fixedly connected to a limiting pressure block (602); the limiting pressure block (602) is used in conjunction with the first fixing plate (5) and the second fixing plate (501).

7. The compound fertilizer drying device according to claim 1, characterized in that: The top end of the guide slide bar (104) is threadedly connected to a limit baffle (7); the limit baffle (7) is circular in shape; the limit baffle (7) is used in conjunction with the guide slide block (105).

8. The compound fertilizer drying device according to claim 1, characterized in that: Two movable notches (8) are provided on the top of the cover plate (109); the movable notches (8) are used in conjunction with the second connecting rod (114).

9. The compound fertilizer drying device according to claim 1, characterized in that: The number of telescopic columns (116) and springs (117) is several; the springs (117) and telescopic columns (116) are evenly distributed between the annular moving plate (115) and the annular cleaning scraper (118).

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