Compound fertilizer granulation material automatic feeding device and feeding method

Abstract

This invention relates to the field of fertilizer production technology, specifically to an automatic feeding device and method for compound fertilizer granulation materials. The device comprises a mixing pot within a box, a rod frame at the top of the box, a lifting rod connected to the rod frame, one end of the lifting rod rotatably connected to the top of a lid, and a transmission unit movably connected to the top of the lid. The mixing pot is equipped with a stirring mechanism, and a feeding channel is elastically connected to the bottom of the mixing pot. After mixing, the lifting rod is pressed down, causing the lifting rod to press down on the transmission unit. The transmission unit then moves the feeding channel downwards, opening it and allowing material to be fed into the mixing pot through the feeding channel at the bottom of the mixing pot. Further rotation of the lifting rod opens the lid. As the transmission unit flips and moves away with the lid, the feeding channel springs back to its original position, restoring the seal on the bottom of the mixing pot. This allows for normal feeding of material into the mixing pot from below the opened lid, making the operation simple.

Description

Technical Field

[0001] This invention relates to the field of fertilizer production technology, and in particular to an automatic feeding device and method for compound fertilizer granulation materials. Background Technology

[0002] Existing compound fertilizer granulation production methods generally include raw material batching, mixing and stirring, agglomeration and crushing, material granulation, screening, drying, and packaging. The initial stage requires thorough mixing of the proportioned raw materials and breaking up any agglomerates before feeding them into a granulator. For example, Chinese patent document CN111138223A... A granulation method for compound fertilizer is disclosed, comprising the following steps: 1) Material preparation: weighing compound fertilizer raw materials and mixing them evenly to obtain compound fertilizer; 2) Granulation: conveying the compound fertilizer to a granulator for granulation; 3) Drying; 4) The product is obtained after sieving. Regarding the material mixing and supply stage in the early stage, the prior art, such as the urea-based compound fertilizer granulation and feeding system disclosed in Chinese patent document CN209302702U, includes multiple metering hoppers, mixing hoppers, belt conveyors and granulators. Each material is weighed in its corresponding metering hopper and then enters the mixing hopper in proportion through a screw conveyor for mixing. The proportion of each raw material is precisely controlled and the mixing is uniform. The mixture is then dispersed by a uniform rake at the discharge end of the belt conveyor. However, the open feeding and discharging method results in insufficient mixing of materials. In the prior art, when mixing and stirring in a closed box, a series of operations are required, from opening the lid, taking out materials, to adding materials and closing the lid. Most of these operations require manual operation, which is cumbersome and inconvenient to use. Summary of the Invention

[0003] In view of this, the purpose of this invention is to provide an automatic feeding device and method for compound fertilizer granulation materials, so as to solve the problems of troublesome operation and inconvenience in use when feeding mixed materials.

[0004] To achieve the above objectives, the present invention provides an automatic feeding device for compound fertilizer granulation materials, comprising a housing, a batching pot inside the housing, a housing cover on the top of the housing, and further comprising:

[0005] A frame is located at the top of the box, and a lifting rod is connected to the frame. One end of the lifting rod is rotatably connected to the top of the box cover.

[0006] The transmission unit is movably connected to the top of the box cover;

[0007] A stirring mechanism, located on the mixing pot body, is used to rotate and stir the materials inside the mixing pot body;

[0008] The feeding channel is flexibly connected to the bottom of the batching pot. When the lifting rod is pressed down, the lifting rod presses down the transmission unit, and the transmission unit drives the feeding channel to move down so that the feeding channel is open and the material is discharged through the feeding channel. By rotating the lifting rod, the box cover is opened and the feeding channel springs back to its original position.

[0009] Preferably, the top of the mixing pot is provided with an inner top cover, and the inner top cover has a feeding port. The stirring mechanism includes a rotating cylinder rotatably connected to the inner top cover, and a stirring rod is connected to the side end of the rotating cylinder.

[0010] Preferably, a worm gear is connected to the top of the rotating drum, a worm is meshed with one side of the worm gear, and a drive motor is mechanically connected to the end of the worm.

[0011] Preferably, a transmission rod is slidably connected inside the rotating drum. One end of the stirring rod passes through the rotating drum and is hinged to the side end of the transmission rod. A crushing head is connected to the end of the stirring rod near the mixing pot. The top end of the transmission rod passes through the rotating drum and is fixedly connected to a top plate. A first elastic element is connected between the top of the transmission rod and the rotating drum. The transmission part includes a transmission plate elastically connected to the top of the box cover. A flange is circumferentially arranged on the top of the top plate, and a groove matching the shape of the flange is opened at the bottom of the transmission plate.

[0012] Preferably, the transmission unit further includes a vertical rod fixedly connected to the top of the transmission plate, the top of the vertical rod extending out of the box cover, and a second elastic element connected between the vertical rod and the box cover.

[0013] Preferably, a movable shaft is fixedly connected to the lifting rod, and an arc-shaped groove is opened on the side end of the rod frame. When the lifting rod is pressed down, the movable shaft slides down along the arc-shaped groove until it reaches the bottom of the arc-shaped groove. The lifting rod is then pressed down further to make the lifting rod rotate along the movable shaft to open the box cover.

[0014] Preferably, a needle rod is connected to the bottom end of the transmission rod, and the bottom end of the needle rod extends out of the rotating drum to push against the feeding channel.

[0015] Preferably, the feeding channel includes a vertical cylinder fixedly connected to the bottom of the mixing pot body, a discharge inclined cylinder connected to the side end of the vertical cylinder, a movable cylinder slidably connected inside the vertical cylinder, and a third elastic element connected between the bottom end of the movable cylinder and the vertical cylinder. In the initial state, the top surface of the movable cylinder and the top surface of the vertical cylinder are flush with the bottom surface of the mixing pot body. When the lifting rod is pressed down, the lifting rod pushes the vertical rod downward, and sequentially drives the transmission plate, top plate, transmission rod, and needle rod to move downward. The needle rod pushes the movable cylinder downward to guide the vertical cylinder and the discharge inclined cylinder.

[0016] Preferably, a melting pot is provided below the batching pot, and the melting pot is connected to the discharge inclined cylinder.

[0017] This invention also provides an automatic feeding method for compound fertilizer granulation materials, comprising the following steps:

[0018] In the initial state, the box cover is sealed on the box body, the top of the transmission plate is firmly abutted against the top of the box cover, the top plate is elastically abutted against the transmission plate, the top of the top plate is circumferentially provided with a flange, and the bottom of the transmission plate is provided with a groove that matches the shape of the flange. The top plate rotates synchronously with the rotating drum, driving the transmission rod to slide up and down continuously, driving the hinged stirring rod to move up and down, stirring the material by rotating the stirring rod, and the crushing head swings up and down to crush the lumpy material.

[0019] When mixing is complete, the lifting rod is pressed down, and the lifting rod pushes the vertical rod downward, compressing the second elastic element and the first elastic element. The transmission plate, top plate, transmission rod, and needle rod are moved down in sequence. The needle rod pushes the movable cylinder down to open the vertical cylinder and the discharge inclined cylinder. The material falls into the vertical cylinder and is discharged at an angle along the open discharge inclined cylinder into the melting pot below, where it is heated and melted to supply liquid material to the high tower granulator.

[0020] The lifting rod continues to rotate along the movable shaft, opening the box cover. The transmission plate moves away from the top plate, and the first elastic element drives the top plate, transmission rod, and needle rod to move upward and reset. At the same time, the movable cylinder moves upward and resets, restoring the sealing of the inner bottom of the batching pot. Compound fertilizer raw materials are added into the batching pot from below the opened box cover.

[0021] The beneficial effects of this invention are as follows: A mixing pot is provided inside the container, with a rod frame at the top of the container. A lifting rod is connected to the rod frame, and one end of the lifting rod is rotatably connected to the top of the container lid. A transmission unit is movably connected to the top of the container lid. A stirring mechanism is provided on the mixing pot for rotating and stirring the materials inside the mixing pot. A feeding channel is elastically connected to the bottom of the mixing pot. Initially, the feeding channel pops upward and is flush with the bottom of the mixing pot, without affecting the mixing of the materials inside. After mixing is complete, the lifting rod is pressed down, which presses down the transmission unit. The transmission unit drives the feeding channel downward to open the channel, allowing the materials to be fed through the feeding channel at the bottom of the mixing pot. Further rotation of the lifting rod opens the container lid. As the transmission unit flips and moves away with the container lid, the feeding channel springs back to its original position, restoring the seal on the bottom of the mixing pot. Thus, materials can be normally added to the mixing pot from below the opened container lid, making the operation simple. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in this invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only for this invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0024] Figure 2This is a schematic diagram of the structure when the flange of the present invention is removed from the groove;

[0025] Figure 3 This is a schematic diagram of the structure of the present invention when the lifting rod is pressed down;

[0026] Figure 4 This is a schematic diagram of the structure of the rotating lifting rod of the present invention;

[0027] Figure 5 This is a top view of the top plate of the present invention;

[0028] Figure 6 This is a schematic diagram of the material feeding channel of the present invention;

[0029] Figure 7 This is a schematic diagram of the structure of the present invention when the movable cylinder is lowered to make the vertical cylinder and the discharge inclined cylinder connected;

[0030] Figure 8 This is a schematic diagram of the structure of the melting pot of the present invention.

[0031] The diagram is marked as follows:

[0032] 1. Box body; 2. Batching pot body; 21. Inner top cover; 22. Feeding port; 3. Heating mechanism; 4. Box cover; 5. Rod frame; 51. Arc groove; 6. Lifting rod; 61. Movable shaft; 7. Transmission part; 71. Transmission plate; 711. Groove; 72. Vertical rod; 73. Second elastic element; 8. Stirring mechanism; 81. Rotary drum; 82. Stirring rod; 83. Transmission rod; 831. Crushing head; 84. Top plate; 841. Flange; 85. First elastic element; 86. Needle rod; 9. Discharge channel; 91. Vertical cylinder; 92. Discharge inclined cylinder; 93. Movable cylinder; 94. Third elastic element; 10. Worm gear; 11. Worm; 12. Melting pot. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to specific embodiments.

[0034] It should be noted that, unless otherwise defined, the technical or scientific terms used in this invention should have the ordinary meaning understood by one of ordinary skill in the art to which this invention pertains. The terms "first," "second," and similar terms used in this invention do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0035] like Figures 1 to 3 As shown, an automatic feeding device and method for compound fertilizer granulation materials includes a box body 1, a batching pot body 2 inside the box body 1, a box cover 4 on the top of the box body 1, and a rod frame 5 at the top of the box body 1. A lifting rod 6 is connected to the rod frame 5, one end of the lifting rod 6 is rotatably connected to the top of the box cover 4, and a transmission part 7 is movably connected to the top of the box cover 4. A stirring mechanism 8 is provided on the batching pot body 2 for rotating and stirring the materials in the batching pot body 2. A feeding channel 9 is elastically connected to the bottom of the batching pot body 2. When the lifting rod 6 is pressed down, the lifting rod 6 presses down the transmission part 7, and the transmission part 7 drives the feeding channel 9 to move down, so that the feeding channel 9 is open and the material is discharged through the feeding channel 9. By rotating the lifting rod 6, the box cover 4 is opened, and the feeding channel 9 springs back to its original position.

[0036] In this invention, a mixing pot body 2 is provided inside the housing 1, and a heating mechanism 3 is provided between the housing 1 and the mixing pot body 2, such as... Figure 1As shown, the heating mechanism 3 includes multiple heating tubes near the bottom of the mixing pot 2, which can be used to preheat and dry the mixed materials. The top of the box 1 is provided with a box cover 4. In particular, the present invention also includes a rod frame 5 provided at the top of the box 1, and a lifting rod 6 is connected to the rod frame 5. One end of the lifting rod 6 is rotatably connected to the top of the box cover 4. At the same time, a transmission part 7 is movably connected to the top of the box cover 4. The mixing pot 2 is provided with a stirring mechanism 8, which is used to rotate and stir the materials in the mixing pot 2. The bottom of the mixing pot 2 is elastically connected with a feeding channel 9. In the initial state, the feeding channel 9 pops up and connects with the mixing pot 2. The bottom of the mixing pot 2 is flush with the bottom, so it does not affect the mixing of materials inside the mixing pot 2. After the mixing is completed, the lifting rod 6 is pressed down, and the lifting rod 6 presses down the transmission part 7. The transmission part 7 drives the feeding channel 9 to move down, so that the feeding channel 9 is open. The material is discharged along the feeding channel 9 at the bottom of the mixing pot 2. Then the lifting rod 6 is rotated to open the box cover 4. Since the transmission part 7 flips and moves away with the box cover 4, the feeding channel 9 springs back to its original position, restoring the seal on the bottom of the mixing pot 2. Thus, various raw materials for compound fertilizer are added to the mixing pot 2 in proportion from the bottom of the opened box cover 4. The operation is simple.

[0037] In embodiments of the present invention, such as Figures 1 to 4 As shown, the top of the mixing pot 2 is provided with an inner top cover 21, and the inner top cover 21 is provided with a feeding port 22 for adding the raw materials of compound fertilizer into the mixing pot 2. The stirring mechanism 8 includes a rotating drum 81 rotatably connected to the inner top cover 21, and a stirring rod 82 is connected to the side end of the rotating drum 81.

[0038] In embodiments of the present invention, such as Figures 1 to 4 As shown, a worm gear 10 is connected to the top of the rotating drum 81, and a worm 11 is meshed with one side of the worm gear 10. A drive motor (not shown in the figure) is mechanically connected to the end of the worm 11, so that the drive motor drives the worm 11 to rotate, the worm 11 drives the worm gear 10 to rotate, thereby driving the rotating drum 81 to rotate, and the stirring rod 82 rotates with the rotating drum 81 to stir and mix the materials.

[0039] In embodiments of the present invention, such as Figures 1 to 4 As shown, a transmission rod 83 is slidably connected inside the rotating drum 81. Specifically, the cross-section of the transmission rod 83 is polygonal, allowing it to slide up and down within the rotating drum 81 and rotate synchronously with it. One end of the stirring rod 82 is inserted into the rotating drum 81 and hinged to the side of the transmission rod 83. Specifically, a crushing head 831 is connected to the end of the stirring rod 82 near the mixing pot 2. Preferably, the crushing head 831 is hemispherical. The top of the transmission rod 83 extends out of the rotating drum 81 and is fixedly connected to a top plate 84. A first elastic element 85 connects the top of the transmission rod 83 to the rotating drum 81. The transmission part 7 includes a transmission plate 71 elastically connected to the top of the lid 4. Figures 1 to 5As shown, the top plate 84 is provided with a flange 841 circumferentially arranged at the top end, and the bottom end of the transmission plate 71 is provided with a groove 711 that matches the shape of the flange 841. Specifically, the flange 841 and the groove 711 are matching hemispherical shapes. In the initial state, the top plate 84 elastically abuts against the transmission plate 71, and the top plate 84 rotates synchronously with the rotating drum 81. Since the box cover 4 is sealed on the box body 1 in the initial state, the top end of the transmission plate 71 is firmly abutted against the top end of the box cover 4 and cannot move upward. Therefore, when the flange 841 on the top plate 84 rotates, it continuously moves into and out of the groove 711, thereby driving the transmission rod 83 to slide up and down continuously, thereby driving the hinged stirring rod 82 to move up and down. Thus, the stirring rod 82 rotates and swings up and down. While the stirring rod 82 rotates and stirs the material, the crushing head 831 swings up and down, which is beneficial for crushing the agglomerated raw materials.

[0040] In embodiments of the present invention, such as Figures 1 to 4 As shown, the transmission unit 7 also includes a vertical rod 72 fixedly connected to the top of the transmission plate 71. The top of the vertical rod 72 extends out of the box cover 4 and is connected to the box cover 4 by a second elastic member 73. The vertical rod 72 can slide vertically along the box cover 4. In the initial state, the second elastic member 73 drives the vertical rod 72 to move upward so that the transmission plate 71 abuts against the top of the box cover 4.

[0041] In embodiments of the present invention, such as Figures 1 to 4 As shown, a movable shaft 61 is fixedly connected to the lifting rod 6, and an arc-shaped groove 51 is opened on the side end of the rod frame 5. When the mixing is completed, the lifting rod 6 is pressed down, and the lifting rod 6 rotates along the end connected to the box cover 4. At the same time, the movable shaft 61 slides down along the arc-shaped groove 51 until it reaches the bottom of the arc-shaped groove 51. Then the lifting rod 6 is pressed down again so that the lifting rod 6 rotates along the movable shaft 61 to open the box cover 4.

[0042] In embodiments of the present invention, such as Figures 1 to 4 As shown, the bottom end of the transmission rod 83 is connected to a needle rod 86, and the bottom end of the needle rod 86 extends out of the rotating drum 81 to push against the feeding channel 9.

[0043] In embodiments of the present invention, such as Figures 1 to 7As shown, the feeding channel 9 includes a vertical cylinder 91 fixedly connected to the bottom of the mixing pot 2. A discharge inclined cylinder 92 is connected to the side of the vertical cylinder 91. A movable cylinder 93 is slidably connected inside the vertical cylinder 91. A third elastic element 94 is connected between the bottom of the movable cylinder 93 and the vertical cylinder 91. In the initial state, the third elastic element 94 pushes the movable cylinder 93 upward. The top surface of the movable cylinder 93 and the top surface of the vertical cylinder 91 are flush with the bottom surface inside the mixing pot 2. When the lifting rod 6 is pressed down, the lifting rod 6 pushes the vertical rod 72 downward, compressing the second elastic element 73 and the first elastic element 85, and sequentially transmitting the transmission plate 71, the top plate 84, the transmission rod 83, and the needle rod 86 downward. The needle rod 86 pushes the movable cylinder 93 downward to connect the vertical cylinder 91 and the discharge inclined cylinder 92, so that the material in the batching pot 2 falls into the vertical cylinder 91 and is discharged at an angle along the open discharge inclined cylinder 92, so as to supply the mixed material for subsequent granulation. Until the lifting rod 6 rotates along the movable shaft 61, the box cover 4 is opened, the transmission plate 71 moves away from the top plate 84, the first elastic element 85 drives the top plate 84, transmission rod 83 and needle rod 86 to move upward and reset, and at the same time the movable cylinder 93 moves upward and reset, restoring the sealing of the inner bottom end of the batching pot 2, so that the material can be added normally into the batching pot 2 from the bottom of the opened box cover 4. The operation is simple.

[0044] like Figure 3 As shown, when the lifting rod 6 is pressed down to discharge material, the transmission plate 71 moves down together, causing the stirring rod 82 to rotate and rise to the highest position. This moves the stirring rod 82 and the crushing head 831 away from the bottom of the pot, minimizing obstruction of material discharge and facilitating thorough and clean material discharge. When the material is reset to its initial state, the stirring rod 82 and the crushing head 831 descend again and approach the bottom of the pot, starting to mix and crush the material.

[0045] As another embodiment of the present invention, such as Figure 8 As shown, a melting pot 12 is provided below the batching pot 2. The melting pot 12 is connected to the discharge inclined cylinder 92. The heating mechanism 3 is attached to the bottom end face of the melting pot 12. Thus, the mixed material in the batching pot 2 is discharged at an incline along the discharge inclined cylinder 92 and enters the melting pot 12 below to heat the material, so as to supply liquid material to the high tower granulator.

[0046] This invention also provides an automatic feeding method for compound fertilizer granulation materials, comprising the following steps:

[0047] In the initial state, the box cover 4 is sealed on the box body 1, the top of the transmission plate 71 is firmly abutted against the top of the box cover 4, the top plate 84 is elastically abutted against the transmission plate 71, the top of the top plate 84 is circumferentially provided with a flange 841, and the bottom of the transmission plate 71 is provided with a groove 711 that matches the shape of the flange 841. The top plate 84 rotates synchronously with the rotating drum 81, driving the transmission rod 83 to slide up and down continuously, driving the hinged stirring rod 82 to move up and down. The stirring rod 82 rotates to stir the material, and the crushing head 831 swings up and down to crush the lumpy material.

[0048] When mixing is complete, the lifting rod 6 is pressed down, and the lifting rod 6 pushes the vertical rod 72 downward, compressing the second elastic element 73 and the first elastic element 85. The transmission plate 71, the top plate 84, the transmission rod 83, and the needle rod 86 are moved downward in sequence. The needle rod 86 pushes the movable cylinder 93 downward to connect the vertical cylinder 91 and the discharge inclined cylinder 92. The material falls into the vertical cylinder 91 and is discharged at an angle along the open discharge inclined cylinder 92, entering the melting pot 12 below to heat the molten material for supplying liquid material to the high tower granulator.

[0049] The lifting rod 6 continues to rotate along the movable shaft 61, opening the box cover 4. The transmission plate 71 moves away from the top plate 84. The first elastic element 85 drives the top plate 84, transmission rod 83, and needle rod 86 to move upward and reset. At the same time, the movable cylinder 93 moves upward and resets, restoring the sealing of the inner bottom end of the batching pot 2. Compound fertilizer raw materials are added into the batching pot 2 from below the opened box cover 4.

[0050] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of the invention (including the claims) is limited to these examples; within the framework of the invention, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of the different aspects of the invention as described above, which are not provided in the details for the sake of brevity.

[0051] This invention is intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this invention should be included within the scope of protection of this invention.

Claims

1. An automatic feeding device for compound fertilizer granulation materials, comprising a box (1), wherein a batching pot (2) is provided inside the box (1), and a box cover (4) is provided on the top of the box (1), characterized in that, Also includes: A rod frame (5) is provided at the top of the box body (1), and a lifting rod (6) is connected to the rod frame (5). One end of the lifting rod (6) is rotatably connected to the top of the box cover (4). The transmission part (7) is movably connected to the top of the box cover (4); A stirring mechanism (8) is provided on the batching pot body (2) for rotating and stirring the materials in the batching pot body (2); The feeding channel (9) is elastically connected to the bottom end of the mixing pot body (2). When the lifting rod (6) is pressed down, the lifting rod (6) presses down the transmission part (7), and the transmission part (7) drives the feeding channel (9) to move down so that the feeding channel (9) is open and the material is discharged through the feeding channel (9). By rotating the lifting rod (6), the box cover (4) is opened and the feeding channel (9) springs back to its original position. The top of the mixing pot body (2) is provided with an inner top cover (21); The stirring mechanism (8) includes a rotating cylinder (81) rotatably connected to the inner top cover (21), and a stirring rod (82) is connected to the side end of the rotating cylinder (81); A transmission rod (83) is slidably connected inside the rotating drum (81). One end of the stirring rod (82) is inserted into the rotating drum (81) and hinged to the side end of the transmission rod (83). A crushing head (831) is connected to the end of the stirring rod (82) near the mixing pot (2). The top end of the transmission rod (83) extends out of the rotating drum (81) and is fixedly connected to a top plate (84). A first elastic element (85) is connected between the top of the transmission rod (83) and the rotating drum (81). The transmission part (7) includes a transmission plate (71) elastically connected to the top of the box cover (4). A flange (841) is circumferentially arranged on the top end of the top plate (84). A groove (711) matching the shape of the flange (841) is opened at the bottom end of the transmission plate (71). The transmission part (7) also includes a vertical rod (72) fixedly connected to the top of the transmission plate (71). The top of the vertical rod (72) extends out of the box cover (4) and is connected to the box cover (4) by a second elastic element (73). A movable shaft (61) is fixedly connected to the lifting rod (6). An arc groove (51) is provided on the side end of the rod frame (5). When the lifting rod (6) is pressed down, the movable shaft (61) slides down along the arc groove (51) until it reaches the bottom of the arc groove (51). The lifting rod (6) is pressed down further so that the lifting rod (6) rotates along the movable shaft (61) to open the box cover (4). The bottom end of the transmission rod (83) is connected to a needle rod (86), and the bottom end of the needle rod (86) extends out of the rotating drum (81) to push against the feeding channel (9); The feeding channel (9) includes a vertical cylinder (91) fixedly connected to the bottom end of the mixing pot body (2). A discharge inclined cylinder (92) is connected to the side end of the vertical cylinder (91). A movable cylinder (93) is slidably connected inside the vertical cylinder (91). A third elastic element (94) is connected between the bottom end of the movable cylinder (93) and the vertical cylinder (91). In the initial state, the top surface of the movable cylinder (93) and the top surface of the vertical cylinder (91) are flush with the bottom surface inside the mixing pot body (2). When the lifting rod (6) is pressed down, the lifting rod (6) pushes the vertical rod (72) downward, and sequentially drives the transmission plate (71), the top plate (84), the transmission rod (83), and the needle rod (86) to move downward. The needle rod (86) pushes the movable cylinder (93) downward to conduct the vertical cylinder (91) and the discharge inclined cylinder (92).

2. The automatic feeding device for compound fertilizer granulation materials according to claim 1, characterized in that, The inner top cover (21) is provided with a feeding port (22).

3. The automatic feeding device for compound fertilizer granulation materials according to claim 2, characterized in that, The top of the rotating drum (81) is connected to a worm wheel (10), and a worm (11) is meshed with one side of the worm wheel (10). A drive motor is mechanically connected to the end of the worm (11).

4. The automatic feeding device for compound fertilizer granulation materials according to claim 3, characterized in that, The mixing pot (2) is provided with a melting pot (12) below it, and the melting pot (12) is connected to the discharge inclined cylinder (92).

5. An automatic feeding method for compound fertilizer granulation materials, applied to the automatic feeding device for compound fertilizer granulation materials described in claim 4, characterized in that, Includes the following steps: In the initial state, the box cover (4) is sealed on the box body (1), the top of the transmission plate (71) is firmly abutted against the top of the box cover (4), the top plate (84) is elastically abutted against the transmission plate (71), the top of the top plate (84) is circumferentially provided with a flange (841), the bottom of the transmission plate (71) is provided with a groove (711) that matches the shape of the flange (841), the top plate (84) rotates synchronously with the rotating drum (81), driving the transmission rod (83) to slide up and down continuously, driving the hinged stirring rod (82) to move up and down, stirring the material by rotating the stirring rod (82), and the crushing head (831) swings up and down to crush the lumpy material; When the mixing is completed, the lifting rod (6) is pressed down, and the lifting rod (6) pushes the vertical rod (72) downward, compressing the second elastic element (73) and the first elastic element (85), and sequentially drives the transmission plate (71), the top plate (84), the transmission rod (83), and the needle rod (86) to move down. The needle rod (86) pushes the movable cylinder (93) down to connect the vertical cylinder (91) and the discharge inclined cylinder (92). The material falls into the vertical cylinder (91) and is discharged at an angle along the open discharge inclined cylinder (92) into the melting pot (12) below, where it is heated and melted to supply liquid material to the high tower granulator. The lifting rod (6) continues to rotate along the movable shaft (61), opening the box cover (4). The transmission plate (71) moves away from the top plate (84). The first elastic element (85) drives the top plate (84), transmission rod (83), and needle rod (86) to move upward and reset. At the same time, the movable cylinder (93) moves upward and resets, restoring the sealing of the inner bottom end of the batching pot (2). The compound fertilizer raw materials are added into the batching pot (2) from the bottom of the opened box cover (4).

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