Blended fertilizer production system

Abstract

A bulk blending fertilizer production system comprises a premixing device, a feeding conveying mechanism and a mixing mechanism which are arranged in sequence, and the premixing device comprises a stirring tank arranged under the ground, a premixing motor and a speed reducer which are arranged at the top of the stirring tank, and a stirring shaft arranged in the stirring tank and connected with the speed reducer; the feeding conveying mechanism comprises a rack and a conveying belt arranged on the rack, the mixing mechanism comprises a cylindrical shell and a plurality of supporting legs arranged on the lower portion of the cylindrical shell, a feeding connector used for fertilizer feeding is formed in one side of the top of the shell, and the diameter of the lower portion of the shell is gradually decreased to form an inverted-cone-shaped structure. And a fertilizer discharge port with a discharge valve is arranged at the bottom of the shell. The stirring and mixing device has the advantage of effectively reducing the stirring and mixing time of subsequent mixed fertilizer production. Through the arrangement of the auxiliary feeding mechanism and the auxiliary discharging mechanism of the conveying device, the defects that feeding is too concentrated, and falling materials are too scattered during discharging are overcome. And the blending fertilizer is stirred more uniformly and efficiently.

Description

Technical Field

[0001] The utility model relates to the technical field of fertilizer production, in particular to a blended fertilizer production system. Background Art

[0002] A blended fertilizer production system generally includes a conveying and feeding device and a stirring device. The stirring device is usually located at a relatively high height, requiring workers to lift the fertilizer raw materials to a high position before feeding them into the stirring device's feed hopper. Directly feeding and stirring through a conveying device usually takes a long time, so it is necessary to premix the fertilizer raw materials first, which can effectively reduce the time required for subsequent blended fertilizer production. The stirring device is also located at a relatively high height, requiring workers to transport the fertilizer raw materials to a high position before feeding them into the stirring device's feed hopper. Existing fertilizer feeding and conveying devices often lack auxiliary feeding and discharging mechanisms, and instead rely on gravity for direct feeding and discharging. This often results in excessively concentrated fertilizer feeding on the conveyor belt and excessively dispersed fertilizer discharge during discharging. Fertilizer mixing and stirring devices typically employ a stirring shaft and stirring blade assembly directly within the shell, which often results in insufficient stirring efficiency and prolonged stirring times. Utility Model Content

[0003] The purpose of this utility model is to provide a blended fertilizer production system in view of the above-mentioned shortcomings.

[0004] The utility model includes a premixing device, a feeding and conveying mechanism and a mixing mechanism which are arranged in sequence. The premixing device includes a mixing tank arranged below the ground, a premixing motor and a reducer arranged on the top of the mixing tank, and a mixing shaft arranged inside the mixing tank and connected to the reducer. The feeding and conveying mechanism includes a frame and a conveyor belt arranged thereon. The mixing mechanism includes a cylindrical shell and a plurality of supporting legs arranged at the lower part of the shell. A feeding interface for feeding fertilizer is provided on one side of the top of the shell. The diameter of the lower part of the shell gradually decreases to form an inverted cone structure. A fertilizer discharge port with a discharge valve is provided at the bottom of the shell.

[0005] The mixing tank comprises an upper cylindrical portion and a lower conical cylindrical portion, the top of the upper cylindrical portion is provided with a horizontal plate for people to step on, the horizontal plate is arranged through the top center of the upper cylindrical portion, and the top of the upper cylindrical portion and on both sides of the horizontal plate are also provided with grid bars to prevent people from falling in; the bottom of the lower conical cylindrical portion is provided with a discharge port with a valve, and the discharge port is connected to the feed end of the screw conveyor arranged therebelow; two groups of horizontal cross bars parallel to each other are fixed to the middle and upper part of the mixing shaft, each group of horizontal cross bars consists of two horizontal cross bars symmetrically arranged on both sides of the mixing shaft, and the horizontal cross bars on the same side of the two groups of horizontal cross bars are fixedly connected by multiple vertical rods, and the top and bottom ends of the multiple vertical rods are respectively fixed with a scraper; the lower end of the mixing shaft is located directly above the discharge port, and the lower end of the mixing shaft is also provided with a spiral blade portion for facilitating the discharge of the fertilizer mixture;

[0006] The frame includes a front support frame, a rear support frame and a pair of connecting cross bars and a pair of connecting oblique bars connecting the two, the pair of connecting oblique bars connect the top ends of the front support frame and the rear support frame, the top ends of the pair of connecting oblique bars are provided with active rollers, and the bottom ends of the pair of connecting oblique bars are provided with driven rollers a; the lower part of the frame is also provided with an auxiliary feeding mechanism for receiving the discharge of the screw conveyor, the auxiliary feeding mechanism includes a group of support plates fixedly connected to the top of the front support frame and the lower part of the pair of connecting oblique bars, a square bucket fixedly connected to the top of a group of support plates, and a set A vertical rectangular cylinder is provided at the bottom of the square bucket for feeding materials to the bottom of the conveyor belt, and the square bucket is located directly below the discharge port of the screw conveyor; the conveyor belt is provided between the active roller and the driven roller a, and the active roller is driven to rotate by a conveying motor provided on the rear support frame; an auxiliary discharging mechanism is provided on the top of the frame, and the auxiliary discharging mechanism includes a pair of vertical plates connected to the rear support frame and an inclined discharging chute fixed thereto, and the upper end of the inclined discharging chute is located directly below the top of the conveyor belt, and the outlet end of the inclined discharging chute is located directly above the feed interface on the top of the shell;

[0007] A bearing seat is provided at the top center of the shell, and a fixed bearing shaft in the bearing seat is connected to a stirring rod, a pulley is provided at the top of the stirring rod, and the bottom end of the stirring rod is located at the lower part of the shell. A motor mounting seat is provided on one side of the upper part of the shell, and a belt motor is fixedly installed on the motor mounting seat. A motor wheel is provided on the output shaft of the belt motor, and the motor wheel and the pulley are connected by a belt; an inverted conical cylinder is fixedly provided at the middle and lower parts of the inner wall of the shell, and a circular notch is provided at the lower end of the inverted conical cylinder for fertilizer to fall. The stirring rod passes through the circular notch of the inverted conical cylinder and extends to above the fertilizer discharge port. A stirring blade portion is respectively provided at the upper, middle and lower parts of the stirring rod, and the stirring blade portion consists of a sleeve portion fixedly connected to the stirring rod and a pair of inclined stirring rods symmetrically arranged on the side walls on both sides of the sleeve portion.

[0008] Preferably, the screw conveyor is arranged at an angle, and its discharge end is located on one side of the mixing tank.

[0009] Preferably, the scraper is a triangular prism-shaped plate.

[0010] Preferably, the two groups of horizontal cross bars are located inside the upper cylindrical portion, and the spiral blade portion is located inside the lower conical cylindrical portion.

[0011] Preferably, a driven roller b is further provided in the middle of the pair of connecting diagonal rods.

[0012] Preferably, a group of support plates consists of four support plates, which are respectively fixed to the top of the front support frame and the lower part of a pair of connecting diagonal rods. A pair of reinforcing connecting plates are also obliquely provided between the rear support frame and the pair of connecting cross rods.

[0013] Preferably, the inclined unloading chute includes a connecting plate fixedly connected to a pair of vertical plates, an inclined bottom plate fixedly connected to the bottom of the connecting plate, and vertical material blocking plates arranged on both side edges of the inclined bottom plate, the upper ends of the vertical material blocking plates are fixedly connected to both sides of the connecting plate, and the length of the connecting plate is greater than the spacing between the pair of vertical plates.

[0014] Preferably, both side edges of the conveyor belt are provided with material-blocking skirts, and a plurality of right-angled triangular prisms are evenly bonded to the outer surface of the conveyor belt along its length, and the right side of the right-angled triangular prism is an inclined surface and the left side is a vertical surface, and the two sides of the right-angled triangular prism are respectively bonded to the material-blocking skirts on both side edges of the conveyor belt.

[0015] Preferably, a plurality of spherical protrusions are evenly distributed on the upper surface of the inverted conical cylinder.

[0016] Preferably, the stirring blade portions of the upper, middle and lower parts of the stirring rod are respectively located above the inverted conical cylinder in the middle part of the shell, below the inverted conical cylinder in the middle part of the shell, above the inverted conical cylinder in the lower part of the shell, and below the inverted conical cylinder in the lower part of the shell, and the length of the inclined stirring rod of the stirring blade portion at the lower part of the stirring rod is smaller than the length of the inclined stirring rod of the stirring blade portion at the upper and middle parts of the stirring rod.

[0017] The advantages of this utility model are: an underground pre-mixing device that facilitates the feeding of fertilizer raw materials, effectively reducing the time required for subsequent mixing and agitation of blended fertilizers. The provision of auxiliary feeding and discharging mechanisms on the conveyor effectively overcomes the drawbacks of excessively concentrated fertilizer feeding and dispersed discharging on the conveyor belt. Compared to conventional mixing methods, this production line configuration ensures more uniform and efficient mixing of blended fertilizers. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 Schematic diagram of the structure of the premixing device.

[0019] Figure 2This is a schematic diagram of the structure of multiple vertical rods on one side of the horizontal crossbar.

[0020] Figure 3 Schematic diagram of the structure of the vertical rod and scraper.

[0021] Figure 4 Schematic diagram of the structure of the spiral blade part at the lower end of the stirring shaft.

[0022] Figure 5 Schematic diagram of the structure of the cross plate and grid bars.

[0023] Figure 6 It is a connection diagram of the feeding and conveying mechanism and the mixing mechanism.

[0024] Figure 7 It is a structural diagram of the auxiliary feeding mechanism.

[0025] Figure 8 It is a structural diagram of the auxiliary discharging mechanism.

[0026] Figure 9 Schematic diagram of the structure of the outer surface of the conveyor belt.

[0027] Figure 10 Schematic diagram of the structure of a right triangular prism.

[0028] Figure 11 Schematic diagram of the structure of the hybrid mechanism.

[0029] Figure 12 Schematic diagram of the structure inside the shell.

[0030] Figure 13 It is a schematic diagram of the structure of the vertical stirring rod and the toggle rod.

[0031] Figure 14 Schematic diagram of the structure of the upper curved plate and the support plate. DETAILED DESCRIPTION

[0032] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0033] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention. It should be noted that similar reference numerals and letters represent similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0034] In the description of the embodiments of the present invention, it should be noted that if the terms "upper", "lower", "inner", "outer", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the accompanying drawings, or the orientation or position relationship in which the product of the utility model is usually placed when in use. This is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, it should not be understood as limiting the present invention. In addition, if the terms "first", "second", etc. appear in the description of the present invention, they are only used to distinguish the description and should not be understood as indicating or implying relative importance.

[0035] In the description of the embodiments of the present invention, it should be noted that, unless otherwise specified or limited, the terms "disposed" and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, or internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0036] As shown in the accompanying drawings, the present invention includes a premixing device, a feeding and conveying mechanism, and a mixing mechanism, which are arranged in sequence. The premixing device includes a mixing tank 1 located below the ground, a premixing motor 2 and a reducer located on the top of the mixing tank 1, and a mixing shaft 3 located inside the mixing tank 1 and connected to the reducer. The feeding and conveying mechanism includes a frame and a conveyor belt 31 disposed thereon. The mixing mechanism includes a cylindrical shell 50 and a plurality of supporting legs 51 disposed at the bottom thereof. A feeding interface 58 for feeding fertilizer is provided on one side of the top of the shell 50. The diameter of the lower portion of the shell 50 gradually decreases to form an inverted conical structure. A fertilizer discharge port 59 with a discharge valve is provided at the bottom of the shell 50.

[0037] The mixing tank 1 comprises an upper cylindrical portion 11 and a lower conical cylindrical portion 12. A horizontal plate 13 for people to step on is provided on the top of the upper cylindrical portion 11. The horizontal plate 13 passes through the top center of the upper cylindrical portion 11. Grid bars 14 are provided on the top of the upper cylindrical portion 11 and on both sides of the horizontal plate 12 to prevent people from falling in. A discharge port 15 with a valve is provided at the bottom of the lower conical cylindrical portion 12. The discharge port 15 is connected to the feed end of a screw conveyor 16 provided thereunder. The stirring shaft Two sets of horizontal cross bars 20 are fixed in the middle and upper part of the stirring shaft 3, each set of horizontal cross bars 20 is composed of two horizontal cross bars symmetrically arranged on both sides of the stirring shaft 3, and a plurality of vertical rods 21 are fixed between the horizontal cross bars on the same side of the two sets of horizontal cross bars 20, and a scraper 22 is fixed to the top and bottom ends of the plurality of vertical rods 21 respectively; the lower end of the stirring shaft 3 is located directly above the discharge port 15, and the lower end of the stirring shaft 3 is also provided with a spiral blade portion 23 for facilitating the discharge of the fertilizer mixture;

[0038] The frame includes a front support frame 32, a rear support frame 33 and a pair of connecting cross bars 34 and a pair of connecting oblique bars 35 connecting the two. The pair of connecting oblique bars 35 connects the top ends of the front support frame 32 and the rear support frame 33. Active rollers 36 are provided at the top ends of the pair of connecting oblique bars 35, and driven rollers a37 are provided at the bottom ends of the pair of connecting oblique bars 35. The lower part of the frame is also provided with an auxiliary feeding mechanism 30 for receiving the discharge of the screw conveyor 16. The auxiliary feeding mechanism 30 includes a group of support plates 38 fixed vertically to the top of the front support frame 32 and the lower part of the pair of connecting oblique bars 35, a square bucket 39 fixed to the top of a group of support plates 38, and a At the bottom of the square bucket 39 is a vertical rectangular cylinder 40 for feeding material to the bottom of the conveyor belt 31. The square bucket 39 is located directly below the discharge port of the screw conveyor 16. The conveyor belt 31 is provided between the active roller 36 and the driven roller a37. The active roller 36 is driven to rotate by a conveying motor 41 provided on the rear support frame 33. An auxiliary discharging mechanism is provided on the top of the frame. The auxiliary discharging mechanism includes a pair of vertical plates 42 connected to the rear support frame 33 and an inclined discharging chute 43 fixed thereto. The upper end of the inclined discharging chute 43 is located directly below the top of the conveyor belt 31, and the outlet end of the inclined discharging chute 43 is located directly above the feed interface 58 on the top of the shell 50.

[0039] The top center of the shell 50 is provided with a bearing seat, and the fixed bearing shaft in the bearing seat is connected to the stirring rod 53. The top of the stirring rod 53 is provided with a pulley 54, and the bottom end of the stirring rod 53 is located at the lower part of the shell 50. A motor mounting seat is provided on one side of the upper part of the shell 50, and a belt motor 55 is fixedly mounted on the motor mounting seat. The output shaft of the belt motor 55 is provided with a motor wheel 56, and the motor wheel 56 and the pulley 54 are connected by a belt 57; an inverted conical cylinder 68 is fixedly provided in the middle and lower parts of the inner wall of the shell 50, and a circular notch is provided at the lower end of the inverted conical cylinder 68 for fertilizer to fall. The stirring rod 53 passes through the circular notch of the inverted conical cylinder 68 and extends to the top of the fertilizer discharge port 59. A stirring blade portion 60 is respectively provided at the upper, middle and lower parts of the stirring rod 53. The stirring blade portion 60 consists of a sleeve portion 61 fixedly connected to the stirring rod 53 and a pair of inclined stirring rods 62 symmetrically arranged on the side walls on both sides of the sleeve portion 61.

[0040] In another technical solution, the screw conveyor 16 is arranged at an angle, and its discharge end is located on one side of the mixing tank 1 .

[0041] In another technical solution, a through hole 17 for the stirring shaft 3 to pass through is provided in the middle of the transverse plate 13 .

[0042] In another technical solution, the scraper 22 is a triangular prism-shaped plate.

[0043] In another technical solution, the two groups of horizontal cross bars 20 are located inside the upper cylindrical portion 11 , and the spiral blade portion 23 is located inside the lower conical cylindrical portion 12 .

[0044] In another technical solution, the length of the vertical rod 21 is greater than the distance between two horizontal cross bars on the same side in the two groups of horizontal cross bars 20 .

[0045] In another technical solution, a driven roller b38 is further provided in the middle of a pair of connecting oblique rods 35 .

[0046] In another technical solution, a group of support plates 38 is composed of four support plates, and the four support plates are respectively fixed to the top of the front support frame 32 and the lower part of a pair of connecting diagonal rods 35.

[0047] In another technical solution, the vertical rectangular cylinder 40 is located directly above the bottom of the conveyor belt 31 to facilitate the feeding of fertilizer.

[0048] In another technical solution, a pair of reinforcing connecting plates 44 are obliquely provided between the rear support frame 33 and the pair of connecting cross bars 34 to make the frame more stable and reliable.

[0049] In another technical solution, the inclined unloading chute 43 includes a connecting plate 45 fixedly connected to a pair of vertical plates 42, an inclined bottom plate 46 fixedly connected to the bottom of the connecting plate 45, and vertical material blocking plates 47 arranged on the edges of both sides of the inclined bottom plate 46. The upper ends of the vertical material blocking plates 47 are fixedly connected to both sides of the connecting plate 45, and the length of the connecting plate 45 is greater than the spacing between the pair of vertical plates 42, that is, greater than the width of the conveyor belt 31.

[0050] In another technical solution, both side edges of the conveyor belt 31 are provided with a material-blocking skirt 49, and the outer surface of the conveyor belt 31 is evenly bonded with a plurality of right-angled triangular prisms 48 along its length, and the right side of the right-angled triangular prism 48 is an inclined surface and the left side is a vertical surface, and the two sides of the right-angled triangular prism 48 are respectively bonded to the material-blocking skirt 49 on both side edges of the conveyor belt 31.

[0051] In another technical solution, the inclined stirring rod 62 is arranged to be inclined upward, forming extrusion between the rod and the upper surface of the inverted cone 68 to improve the stirring effect.

[0052] In another technical solution, the diameter of the circular notch is one quarter of the diameter of the shell 50 .

[0053] In another technical solution, a plurality of spherical protrusions 63 are evenly distributed on the upper surface of the inverted conical cylinder 68 to increase the stirring effect and prevent the fertilizer from falling too quickly.

[0054] In another technical solution, the sleeve portion 61 and the pair of inclined stirring rods 62 are an integrally formed structure, which is more stable and reliable.

[0055] In another technical solution, the upper, middle and lower stirring blade portions 60 of the stirring rod 53 are respectively located above the inverted conical cylinder 68 in the middle of the shell 50, below the inverted conical cylinder 68 in the middle of the shell 50, above the inverted conical cylinder 68 in the lower part of the shell 50, and below the inverted conical cylinder 68 in the lower part of the shell 50, forming multiple stirring areas to improve stirring efficiency.

[0056] In another technical solution, the length of the inclined stirring rod of the stirring blade portion 60 at the lower portion of the stirring rod 53 is smaller than the length of the inclined stirring rod of the stirring blade portion 60 at the upper and middle portions of the stirring rod 53 .

[0057] Working method: The operator will stand on the horizontal board and put the mixed fertilizer raw materials into the grid bars in proportion. The fertilizer raw materials enter the mixing tank through the gaps between the grid bars, and then the pre-mixing motor and the reducer drive the mixing shaft to rotate. The mixing shaft then drives two sets of horizontal cross bars and multiple vertical rods thereon to stir, and also drives the scrapers at the top and bottom of the vertical rods to stir. After preliminary pre-mixing, the discharge port is opened and the fertilizer mixture is discharged through a screw conveyor.

[0058] The screw conveyor adds premixed fertilizer from the square bucket of the auxiliary feeding mechanism. The fertilizer falls from the vertical rectangular cylinder to the top of the conveyor belt, passes through the two adjacent right-angled triangular prisms and the material-blocking skirt, and is transported from bottom to top driven by the conveying motor. After being transported to the upper end of the conveyor belt, the fertilizer gradually slides down under the action of gravity. The right inclined surface of the right-angled triangular prism can also form an angle for the fertilizer to roll down, preventing the fertilizer from falling too quickly.

[0059] Fertilizer slides into the inclined discharge chute of the auxiliary discharging mechanism, is enclosed by the inclined bottom plate and vertical baffle plate, and finally delivered to the subsequent mixing mechanism. Fertilizer in the inclined discharge chute falls into the feed port at the top of the shell, and then the belt motor is started. The motor pulley and belt drive the pulley and stirring rod to rotate, and the stirring rod in turn drives the stirring rod to rotate. The multiple stirring rods and the inverted conical cylinders in the middle and lower parts of the shell form a stirring zone, forming a multi-zone stirring inside the shell. Compared with conventional stirring methods, this setting stirs more evenly and efficiently. After mixing is completed, the fertilizer is discharged from the fertilizer discharge port.

[0060] The above implementation cases are only for illustrating the technical solutions and features of the utility model, and their purpose is to enable people familiar with the technology to implement them better. They cannot be used to limit the scope of protection of the utility model. Any equivalent changes or modifications made according to the spirit of the utility model are within the scope of protection of the utility model. Those not described in detail are prior art.

Claims

1. A blended fertilizer production system, comprising a premixing device, a feeding and conveying mechanism, and a mixing mechanism, which are sequentially arranged, wherein the premixing device comprises a stirring tank (1) arranged below the ground, a premixing motor (2) and a reducer arranged on the top of the stirring tank (1), and a stirring shaft (3) arranged inside the stirring tank (1) and connected to the reducer, the feeding and conveying mechanism comprises a frame and a conveyor belt (31) arranged thereon, the mixing mechanism comprises a cylindrical shell (50) and a plurality of supporting legs (51) arranged at the bottom thereof, a feeding interface (58) for feeding fertilizer is provided on one side of the top of the shell (50), the diameter of the lower part of the shell (50) gradually decreases to form an inverted cone structure, and a fertilizer discharge port (59) with a discharge valve is provided at the bottom of the shell (50), characterized in that The mixing tank (1) comprises an upper cylindrical portion (11) and a lower conical cylindrical portion (12); a horizontal plate (13) for people to step on is provided on the top of the upper cylindrical portion (11); the horizontal plate (13) passes through the top center of the upper cylindrical portion (11); grid bars (14) are provided on the top of the upper cylindrical portion (11) and on both sides of the horizontal plate (12) to prevent people from falling in; a discharge port (15) with a valve is provided at the bottom of the lower conical cylindrical portion (12); the discharge port (15) is connected to the feed end of a screw conveyor (16) provided thereunder; the mixing tank (1) comprises an upper cylindrical portion (11) and a lower conical cylindrical portion (12); a lower conical cylindrical portion (12) comprises ... Two sets of mutually parallel horizontal cross bars (20) are fixedly provided at the middle and upper part of the mixing shaft (3), and each set of horizontal cross bars (20) is composed of two horizontal cross bars symmetrically arranged on both sides of the mixing shaft (3). A plurality of vertical bars (21) are fixedly connected between the horizontal cross bars on the same side of the two sets of horizontal cross bars (20), and a scraper (22) is fixedly connected to the top and bottom ends of the plurality of vertical bars (21); the lower end of the mixing shaft (3) is located directly above the discharge port (15), and the lower end of the mixing shaft (3) is also provided with a spiral blade portion (23) for facilitating the discharge of the fertilizer mixture; The frame comprises a front support frame (32), a rear support frame (33), and a pair of connecting cross bars (34) and a pair of connecting oblique bars (35) connecting the two, wherein the pair of connecting oblique bars (35) connect the top ends of the front support frame (32) and the rear support frame (33), a driving roller (36) is provided at the top ends of the pair of connecting oblique bars (35), and a driven roller a (37) is provided at the bottom ends of the pair of connecting oblique bars (35); an auxiliary feeding mechanism (30) for receiving the discharge of the screw conveyor (16) is also provided at the lower part of the frame, and the auxiliary feeding mechanism (30) comprises a group of support plates (38) fixedly connected to the top end of the front support frame (32) and the lower part of the pair of connecting oblique bars (35) in a vertical direction, a square bucket (39) fixedly connected to the top of the group of support plates (38), and a set A vertical rectangular cylinder (40) is provided at the bottom of the square bucket (39) for feeding materials to the bottom of the conveyor belt (31), and the square bucket (39) is located directly below the discharge port of the screw conveyor (16); the conveyor belt (31) is provided between the active roller (36) and the driven roller a (37), and the active roller (36) is driven to rotate by a conveying motor (41) provided on the rear support frame (33); an auxiliary discharge mechanism is provided at the top of the frame, and the auxiliary discharge mechanism includes a pair of vertical plates (42) connected to the rear support frame (33) and an inclined discharge trough (43) fixed thereto, and the upper end of the inclined discharge trough (43) is located directly below the top of the conveyor belt (31), and the outlet end of the inclined discharge trough (43) is located directly above the feed interface (58) at the top of the shell (50); A bearing seat is provided at the center of the top of the housing (50), a fixed bearing shaft in the bearing seat is connected to a stirring rod (53), a top end of the stirring rod (53) is provided with a pulley (54), the bottom end of the stirring rod (53) is located at the bottom of the housing (50), a motor mounting seat is provided on one side of the upper part of the housing (50), a belt motor (55) is fixedly mounted on the motor mounting seat, a motor wheel (56) is provided on the output shaft of the belt motor (55), and the motor wheel (56) and the pulley (54) are connected by a belt (57); the housing (50 ) is fixedly provided with an inverted conical cylinder (68) at the middle and lower parts of the inner wall, and a circular notch is provided at the lower end of the inverted conical cylinder (68) for fertilizer to fall. The stirring rod (53) passes through the circular notch of the inverted conical cylinder (68) and extends to the top of the fertilizer discharge port (59). The upper, middle and lower parts of the stirring rod (53) are respectively provided with a stirring blade portion (60). The stirring blade portion (60) consists of a sleeve portion (61) fixedly connected to the stirring rod (53) and a pair of inclined stirring rods (62) symmetrically arranged on the side walls of both sides of the sleeve portion (61).

2. A blended fertilizer production system according to claim 1, characterized in that: The screw conveyor (16) is arranged obliquely, and its discharge end is located on one side of the stirring tank (1).

3. A blended fertilizer production system according to claim 1, characterized in that: The scraper (22) is a triangular prism-shaped plate.

4. A blended fertilizer production system according to claim 1, characterized in that: The two groups of horizontal cross bars (20) are located inside the upper cylindrical portion (11), and the spiral blade portion (23) is located inside the lower conical cylindrical portion (12).

5. A blended fertilizer production system according to claim 1, characterized in that: A driven roller b (38) is further provided in the middle of a pair of connecting oblique rods (35).

6. A blended fertilizer production system according to claim 1, characterized in that: A group of support plates (38) consists of four support plates, which are respectively fixed to the top of the front support frame (32) and the lower part of a pair of connecting oblique rods (35). A pair of reinforcing connecting plates (44) are also obliquely provided between the rear support frame (33) and the pair of connecting cross bars (34).

7. A blended fertilizer production system according to claim 1, characterized in that: The inclined discharge chute (43) comprises a connecting plate (45) fixedly connected to a pair of vertical plates (42), an inclined bottom plate (46) fixedly connected to the bottom of the connecting plate (45), and vertical blocking plates (47) arranged on both side edges of the inclined bottom plate (46), the upper ends of the vertical blocking plates (47) are fixedly connected to both sides of the connecting plate (45), and the length of the connecting plate (45) is greater than the distance between the pair of vertical plates (42).

8. A blended fertilizer production system according to claim 1, characterized in that: The edges of both sides of the conveyor belt (31) are provided with a material-blocking skirt (49), and the outer surface of the conveyor belt (31) is evenly bonded with a plurality of right-angled triangular prisms (48) along its length, and the right side of the right-angled triangular prism (48) is an inclined surface and the left side is a vertical surface, and the two sides of the right-angled triangular prism (48) are respectively bonded to the material-blocking skirt (49) on the edges of both sides of the conveyor belt (31).

9. A blended fertilizer production system according to claim 1, characterized in that: A plurality of spherical protrusions (63) are evenly distributed on the upper surface of the inverted conical cylinder (68).

10. The blended fertilizer production system according to claim 1, characterized in that: The stirring blade portions (60) at the upper, middle and lower parts of the stirring rod (53) are respectively located above the inverted conical cylinder (68) at the middle part of the shell (50), below the inverted conical cylinder (68) at the middle part of the shell (50), above the inverted conical cylinder (68) at the lower part of the shell (50), and below the inverted conical cylinder (68) at the lower part of the shell (50). The length of the inclined stirring rod of the stirring blade portion (60) at the lower part of the stirring rod (53) is shorter than the length of the inclined stirring rods of the stirring blade portions (60) at the upper and middle parts of the stirring rod (53).

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