Efficient raw material mixing equipment for producing controlled and slow release type blended fertilizer

Abstract

The invention discloses high-efficiency raw material mixing equipment for producing a controlled and slow release type bulk blending fertilizer, which comprises a mixing machine body internally provided with a channel which is communicated up and down; the mixing structure is assembled in the mixing machine body from top to bottom; through the arrangement of the mixing machine body and the mixing structure, the mode of converting a columnar shape into a strip shape is matched with a sprayed adhesive, primary bonding and clustering of raw materials are achieved, meanwhile, the raw materials which are not bonded and mixed can be filtered and collected, blocking and mixing of the raw materials are achieved through a downward pushing blade and an upward lifting blade, and therefore the mixing efficiency is improved. According to the device, the raw materials are collected, the adhesive is sprayed on the surfaces of the collected raw materials for the second time by means of the gravity of the raw materials, and finally the raw materials are adhered and mixed with the bulk fertilizer in the secondary communication channel, so that the uniform shaping of the fertilizer is realized. It is guaranteed that the output fertilizer is kept in a uniform nutrient state, and follow-up nutrition-balanced granulation operation is better facilitated.

Description

Technical Field

[0001] The invention relates to the technical field of chemical production, in particular to a high-efficiency raw material mixing device for producing controlled-release blended fertilizers. Background Art

[0002] Controlled-release blended fertilizer is a type of fertilizer that can control the rate of nutrient release. The production mainly includes the following steps: First, prepare the raw materials, select high-quality basic fertilizer raw materials such as urea, diammonium phosphate, etc., prepare controlled-release materials, and add trace elements. Then, design the formula, design a reasonable formula and determine the amount of raw materials according to the nutrient requirements of crops, soil fertility and fertilization goals. In terms of production technology, the raw materials are first crushed, then mixed and stirred, and then granulated. If coating is required, it is coated, and then dried, cooled, screened and packaged. Finally, strict quality control must be carried out to ensure that the quality of each link meets the standards, sample and test raw materials and finished products, and establish a quality traceability system.

[0003] Among them, when the raw materials of controlled-release blended fertilizers are crushed and mixed, a simple mixing barrel or a horizontal mixer is generally used to perform this operation. However, these two types of mixing equipment only achieve formal mixing. Although the various raw materials can be initially mixed together during stirring, the mixed state cannot be continuously guaranteed during the subsequent granulation process. Due to this instability, it is very likely that the homogenization effect of fertilizer nutrients cannot be guaranteed after granulation, which will have an adverse effect on the actual use quality of the fertilizer. For example, it may cause uneven absorption of nutrients by crops in different areas after fertilization, affecting the growth, development and yield quality of the crops.

[0004] Therefore, a high-efficiency raw material mixing equipment for producing controlled-release blended fertilizers is proposed. Summary of the invention

[0005] The purpose of the present invention is to provide an efficient raw material mixing device for the production of controlled-release blended fertilizers, so as to solve the problem that the mixing and homogenization effect of the efficient raw material mixing device for the production of controlled-release blended fertilizers proposed in the above background technology cannot be guaranteed.

[0006] To achieve the above object, the present invention provides the following technical solution: a high-efficiency raw material mixing device for producing controlled-release blended fertilizers, comprising: The mixing body has grooves connected up and down inside, which are used to provide mixing space for the input raw materials; The mixing structure is assembled inside the mixing body from top to bottom, and is used to cooperate with the mixing body to perform efficient mixing of fertilizers; The mixing machine body comprises a mixing box, three material guide channels are provided inside the mixing box, a spraying notch is provided on the inner wall of one of the material guide channels, an exchange channel is provided inside the mixing box at the lower end of the material guide channel, mixing barrels are fixedly provided at intervals just below the exchange channel inside the mixing box, and a filter rack is fixedly provided at the upper end of the mixing barrel, a diversion channel is provided inside the mixing box on both sides of the mixing barrel, a secondary exchange channel is provided inside the mixing box at the lower end of the diversion channel and the lower end of the mixing barrel, and a discharge channel with an open end is provided inside the mixing box below the secondary exchange channel; The mixing structure includes a discharging screw, which is rotatably arranged inside the discharging chute, and a bevel gear box is arranged for transmission between the discharging screws. A two-way distributing screw is rotatably arranged at the lower port of the mixing barrel just above the discharging screw, and a bevel gear box is also transmission-connected between the discharging screws. Both ends of the two-way distributing screw extend through the mixing box and are transmission-connected to a plurality of air-drying fans through two sets of toothed belt pulley groups respectively. The air-drying fan is installed and fixed in the assembly channels opened in the diverter channel corresponding to the front and rear sides of the mixing box. The rotating shaft of one of the bevel gears of the bevel gear box connected to the two-way distributing screw extends upward into the mixing barrel, and is transmission-connected to a stirring rod rotatably arranged inside the mixing barrel through a coupling. A plurality of push-down blades are fixed on the upper half of the side surface of the stirring rod, and a plurality of lifting blades are arranged on the lower half of the stirring rod. The push-down blades are fixed to a sleeve slidingly sleeved on the surface of the stirring rod, and the lower annular surface of the sleeve is in the stirring The cam is fixed to the inner side of the mixing machine box, and the spring end of the spring rod is slidably connected to the upper spring rod or the inner side of the mixing machine box.

[0007] Preferably, a feed end cover is installed at the upper end of the mixer box by bolts, and the upper surface of the feed end cover is integrally provided with several interfaces for feeding materials into the inside of the mixer box from the center to the periphery, and the interfaces on both sides of the central interface are merged and connected, and after being connected, the interfaces form three independent conveying pipelines, and the lower ports of the material guide channels on both sides are inclined toward the middle material guide channel.

[0008] Preferably, the discharging screw is rotatably arranged inside the discharging chute, and a part of the rod body is cut off from the center position and broken into two parts, and one end of the broken rod body passes through the mixing box and is fixed to the toothed belt wheel driven by the driving motor, the bevel gear box is composed of a bearing box body and at least two bevel gears, and the bevel gears are mutually driven and meshed, and the bidirectional material dividing screw is also broken into two parts of the rod body from the middle position, and the spiral directions of the two parts of the rod body are set in opposite directions.

[0009] Preferably, the toothed belt pulley groups are composed of two toothed belt pulleys and a toothed belt for transmission connection to the toothed belt pulleys, and the axle of one of the toothed belt pulleys in the two toothed belt pulley groups is fixed to the impeller shaft of an air-drying fan, and the air-drying fan is also equipped with a set of toothed belt pulley groups for transmission connection with other air-drying fans.

[0010] Preferably, the spiral direction of the upward-lifting blade is arranged opposite to that of the downward-pushing blade.

[0011] Preferably, a designated sliding slide is opened inside the tube shell of the stirring rod just below the glue spray nozzle, and a connecting rod is slidably arranged inside the slide, and a piston structure is arranged at the lower end of the spring pull rod located at the bottom, and the lower end of the piston has a sufficient sliding distance with the tube end of the stirring rod.

[0012] Preferably, the upper end of the stirring rod is fixed to the axle of one of the bevel gears inside the bevel gear box, and a through hole communicating with the connecting liquid hole is opened inside the bevel gear, and the corresponding through hole inside the bevel gear box continues to extend upward and penetrate, and the bevel gear box is provided with a three-way adhesive connecting interface at the upper port of the extended through hole, wherein the middle interface is connected to an external adhesive supply device.

[0013] Preferably, interfaces and pressure spray heads are fixedly provided on the side surface of the glue spray hose and inside the opposite ends of the spring piston rod, respectively, and the spraying slot has sufficient space for spraying glue into the material guide channel.

[0014] Compared with the prior art, the present invention has the following beneficial effects: The present invention can integrate and exchange the input raw materials through the arrangement of the feed end cover, the discharge screw, the material guide channel, the cam, the spring piston rod, the glue spraying tube, the spraying notch and the exchange channel, so as to make them preliminarily mixed, and transport them through three main paths after the intersection, and transform them from columnar to strip during the transportation process, so as to facilitate the intersection and bonding of a large area. At the same time, under the drive of the driving motor, the cam performs continuous and intermittent pushing of the spring piston rod, so as to realize the continuous spraying of the adhesive to the surface of the raw material through the glue spraying tube, so as to achieve the preliminary bonding and agglomeration of the raw materials after the intersection, and provide the basic conditions for balanced nutrition for the controlled and slow-release blended fertilizer; The present invention can filter and collect unmixed raw materials through the arrangement of a mixing machine box, a diverter channel, a filter rack, a mixing barrel, a secondary exchange channel, a discharging channel, a discharging screw, a bevel gear box, a two-way distributing screw, a toothed belt pulley set, an air-drying fan, a stirring rod, a push-down blade, a connecting liquid hole, a glue spray nozzle, an upward lifting blade, a sleeve, a first return spring, a sealing colloid, a connecting rod, a spring pull rod, a second return spring, a glue filling pipe and a glue filling valve, and can block and mix the downward conveying of the raw materials by taking over the rotation downward transmission and taking over the rotation upward transmission. At the same time, the upward lifting blade can use the gravity of the falling raw materials to temporarily open the glue spray nozzle and drag the spring pull rod downward in a downward manner, and then use the downward The movable spring pull rod compresses the adhesive inside the communicating liquid hole, so that the adhesive is sprayed through the glue spray nozzle onto the surface of the raw materials stored on the upward lifting blade, so as to realize the glue spraying treatment of the raw materials. Then the raw materials will be broken up into strips again by the two-way dividing screw, and mixed with the stabilized agglomerated fertilizer inside the secondary exchange channel, and finally output to the outside under the action of the discharging screw, so as to realize the efficient mixing of the controlled and slow-release blended fertilizer raw materials. Compared with the current fertilizer mixing equipment, it is not just a simple blending of the fertilizer, but the shaping of the state of the fertilizer after mixing, so as to ensure that the fertilizer after output maintains a uniform nutrient state, which is more conducive to the subsequent nutritionally balanced granulation operation, and guarantees the high-quality production of controlled and slow-release blended fertilizers. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is the overall structural view of the present invention; Figure 2 The overall cross section of the present invention Figure 1 ; Figure 3 The overall cross section of the present invention Figure 2 ; Figure 4 It is a schematic diagram of the hybrid structure of the present invention; Figure 5 A schematic diagram of a stirring rod of the present invention; Figure 6 is a cross-sectional view of a stirring rod of the present invention; Figure 7 It is a schematic diagram of the cam and its connection structure of the present invention.

[0016] In the figure: 1. Mixing body; 11. Mixing box; 111. Material guide channel; 1111. Spraying slot; 112. Exchange channel; 113. Diverter channel; 114. Filter rack; 115. Mixing barrel; 116. Secondary exchange channel; 117. Discharge channel; 12. Feeding end cover; 2. Mixing structure; 21. Discharging screw; 22. Bevel gear box; 221. Adhesive connecting interface; 23. Bidirectional distributing screw; 24. Toothed belt pulley set; 25. Air drying fan; 26. Stirring rod; 261. Push-down blade; 2611. Connecting liquid hole; 2612. Glue spray nozzle; 262. Lifting blade; 2621. Sleeve; 2622. First return spring; 2623. Sealing colloid; 2624. Connecting rod; 2625. Spring pull rod; 2627. Second return spring; 2628. Glue filling hose; 2629. Glue filling valve; 27. Cam; 271. Spring piston rod; 272. Glue spray hose. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0018] See also Figures 1 to 7 The present invention provides a technical solution for a high-efficiency raw material mixing device for producing controlled-release blended fertilizers: A high-efficiency raw material mixing equipment for the production of controlled-release blended fertilizers, comprising: The mixing body 1 has a groove connected up and down inside, which is used to provide a mixing space for the input raw materials; The mixing structure 2 is assembled inside the mixing body 1 from top to bottom, and is used to cooperate with the mixing body 1 to perform efficient mixing of fertilizers.

[0019] The mixing body 1 includes a mixing box 11, and a feed end cover 12 is installed on the upper end of the mixing box 11 by bolts. The upper surface of the feed end cover 12 is integrally provided with several interfaces for feeding materials into the mixing box 11 from the center to the periphery, and the interfaces on both sides of the central interface are merged and connected, and the interfaces after being connected form three independent conveying pipelines. The interior of the mixing box 11 corresponds to the three independent conveying pipelines and is provided with three scraper-shaped material guide channels 111 from top to bottom, wherein two long inner walls of the material guide channel 111 located in the middle are symmetrically provided with spraying grooves 1111 connected with the interior of the material guide channel 111, and the lower ends of the material guide channels 111 located on both sides are inclined toward the middle material guide channel 111, and the interior of the mixing box 11 is provided with an exchange channel 112 at the lower end of the material guide channel 111.

[0020] Both ends of the bidirectional material distribution screw 23 extend out of the mixing box 11 and are connected to the two coaxial toothed belt pulley groups 24. The toothed belt pulley groups 24 are composed of two toothed belt pulleys and a toothed belt for transmission connection to the toothed belt pulleys. The axle of one of the toothed belt pulleys of the two toothed belt pulley groups 24 is fixed to the impeller shaft of an air-drying fan 25, and the air-drying fan 25 is also matched with a group of toothed belt pulley groups 24 for transmission connection with other air-drying fans 25. The air-drying fan 25 is installed and fixed in the assembly channel opened on the front and rear sides of the mixing box 11 corresponding to the diverter channel 113, and the inner wall of the diverter channel 113 is provided with an exhaust through slot facing the outside of the mixing box 11, which is used to dry the adhered fertilizer flowing inside the diverter channel 113.

[0021] The wheel axles of the bevel gears on both sides of the bevel gear box 22 extend out of the mixer box 11, and are fixed with the toothed belt pulley set 24 and the cam 27 rotatably set inside the mixer box 11. The wheel side of the cam 27 is always in active contact with one end of the spring piston rod 271, and the spring end of the spring piston rod 271 is slidingly limited and set inside the glue spraying tube 272. The tube side of the glue spraying tube 272 and the opposite end of the spring piston rod 271 inside are respectively fixed with an interface and a pressure spray head, and the glue spraying tube 272 is fixedly set at the center position of the spraying slot 1111 inside the mixer box 11, and the spraying slot 1111 has sufficient space for spraying glue inside the material guide channel 111, and the interface on the side of the glue spraying tube 272 is connected with the adhesive connecting interface 221 through a pipeline.

[0022] During operation, the raw material storage bin conveying mechanism is first connected to the upper surface interface of the feed end cover 12, and then the toothed belt wheel at the end of the discharge screw 21 is connected to the drive motor through a toothed belt, and the fertilizer raw material production and mixing can be carried out. When mixing is performed, the raw material is input into the feed end cover 12, and enters the guide channel 111 through mixing and conveying. The raw material is transformed from columnar conveying to belt shape. At this time, the cams 27 on both sides of the middle guide channel 111 are driven by the drive motor to cooperate with the discharge screw 21, the bevel gear box 22, the bidirectional material distribution screw 23, the toothed belt wheel group 24 and the stirring rod 26 to drive the lower rotation. The spring piston rod 271 is moved intermittently along the glue spraying tube 272, and the adhesive in the glue spraying tube 272 is compressed and sprayed to the spraying slot 1111 through the nozzle and diffused to the inside of the material guide channel 111, so as to spray the transported raw materials. The fertilizer raw materials sprayed with adhesive are input into the exchange channel 112, and intersect with other fertilizer raw materials and additives. After the intersection, they are bonded together to form irregular small clumps, and then the clumps of fertilizer are filtered and diverted to the diversion channel 113, and then the rotating two-way material dividing screw 23 drives the air drying fan 25 to blow and dry the clumps of fertilizer.

[0023] To sum up, through the arrangement of the feed end cover 12, the discharge screw 21, the guide channel 111, the cam 27, the spring piston rod 271, the glue spraying tube 272, the spraying slot 1111 and the exchange channel 112, the input raw materials can be integrated and exchanged, and they can be preliminarily mixed. After the intersection, they are transported through three main paths, and during the transportation process, they are transformed from a columnar shape to a strip shape, so as to facilitate a sufficiently large area of ​​intersection and fitting. At the same time, under the drive of the drive motor, the cam 27 performs continuous and intermittent pushing of the spring piston rod 271, so as to realize the continuous spraying of the adhesive onto the surface of the raw material through the glue spraying tube 272, so as to achieve the initial bonding of the raw materials after the intersection, and provide the basic conditions for nutritional balance for the controlled-release blended fertilizer.

[0024] As an embodiment of the present invention, Figures 1 to 7 As shown, inside the mixing box 11, mixing barrels 115 are fixedly arranged at intervals just below the exchange channel 112, and the upper port of the mixing barrel 115 is open, and an upper convex filter rack 114 is fixedly arranged at the open port, and the inside of the mixing box 11 is provided with diverter channels 113 connected to the exchange channel 112 on both sides of the mixing barrel 115, and the inside of the mixing box 11 is provided with a secondary exchange channel 116 at the lower port of the diverter channel 113 that is inclined and intersected with the lower port of the mixing barrel 115, and the inside of the mixing box 11 is provided with a discharge channel 117 with one end open below the secondary exchange channel 116.

[0025] The mixing structure 2 includes a discharging screw 21, which is rotatably arranged inside the discharging channel 117, and is cut into two parts by cutting off a part of the rod body from the center position, and one end of the cut rod body passes through the mixer box 11 and is fixed to a toothed belt wheel driven by a driving motor, and a bevel gear box 22 is arranged at the cut position of the discharging screw 21 to maintain the coaxial rotation ability of the discharging screw 21 after it is cut off, and the bevel gear box 22 is composed of a bearing box and at least two bevel gears, and the bevel gears are meshed with each other, and a bidirectional material dividing screw 23 is rotatably arranged at the lower port of the mixing barrel 115 directly above the discharging screw 21, and the bidirectional material dividing screw 23 is also cut into two parts of the rod body from the middle position, and the spiral directions of the two parts of the rod body are arranged in opposite directions, and In the disconnected position, a coaxial transmission connection is also made through the bevel gear box 22. The rotating shaft of one of the bevel gears of the bevel gear box 22 connected to the bidirectional material distribution screw 23 extends upward into the mixing barrel 115, and is transmission-connected to the stirring rod 26 rotatably arranged inside the mixing barrel 115 through a coupling. A plurality of push-down blades 261 are fixed around the upper half of the side surface of the stirring rod 26 along a spiral path, and a plurality of lifting blades 262 are arranged below the push-down blades 261 according to the arrangement of the push-down blades 261 on the lower half of the stirring rod 26, and the spiral direction of the lifting blades 262 is arranged opposite to that of the push-down blades 261. The push-down blades 261 are connected through a connecting rod and a sleeve 262 slidably sleeved in a preset slide groove on the surface of the stirring rod 26 1 is fixed, and the lower annular surface of the sleeve 2621 is slidably sleeved with a first return spring 2622 in a preset sliding groove on the surface of the stirring rod 26, which is used to execute the sliding limitation of the sleeve 2621, and a sealing colloid 2623 is integrally arranged above the inner wall of the sleeve 2621 corresponding to the center position of the upward lifting blade 262, and the interior of the tube shell of the stirring rod 26 is provided with a mounting hole inclined to the upward lifting blade 262 at the same position of the sealing colloid 2623, and a glue spray nozzle 2612 connected with the connecting liquid hole 2611 is installed inside the mounting hole, and the connecting liquid hole 2611 is arranged inside the stirring rod 26 along the pipe diameter, and the sealing colloid 2623 can execute the sliding opening and closing of the open end of the glue spray nozzle 2612, and the interior of the tube shell of the stirring rod 26 is provided with a glue spray nozzle 2612 connected with the connecting liquid hole 2611. The connecting liquid hole 2611 is arranged inside the stirring rod 26 along the pipe diameter, and the sealing colloid 2623 can execute the sliding opening and closing of the open end of the glue spray nozzle 2612, and the inside of the tube shell of the stirring rod 26 is provided with a glue spray nozzle 2612 connected with the connecting liquid hole 2611. A designated sliding slideway is provided directly below 612, and a connecting rod 2624 is slidably provided inside the slideway, and the connecting rod 2624 is fixedly connected between the sleeve 2621 and the spring pull rod 2625. The spring pull rod 2625 is in the shape of a weight, and the upper end is slidably inserted into the limited insertion hole provided inside the upper spring pull rod 2625 or the stirring rod 26, and the sliding limit of the upper end of the spring pull rod 2625 is performed by the second return spring 2627. A glue filling tube 2628 connected to the connecting liquid hole 2611 is provided inside the uppermost spring pull rod 2625, and a glue filling valve 2629 opened downward for glue filling is arranged at the upper end of the glue filling tube 2628. A piston structure is provided at the lower end of the spring pull rod 2625 located at the bottom.The lower end of the piston and the tube end of the stirring rod 26 have sufficient sliding distance, the upper end of the stirring rod 26 is fixed to the axle of one of the bevel gears inside the bevel gear box 22, and a through hole is opened inside the bevel gear to penetrate the communication fluid hole 2611, and the corresponding through hole inside the bevel gear box 22 continues to extend upward and penetrate, and the bevel gear box 22 is provided with a three-way connected adhesive communication interface 221 at the upper end of the extended through hole, wherein the middle interface is connected to the external adhesive supply device.

[0026] During operation, the fertilizer in a lump falls on the surface of the filter mesh frame 114, and is filtered and diverted to the diverter channels 113 on both sides. The raw materials that are not bonded or detached enter the mixing barrel 115 and fall on the surface of the rotating push-down blade 261. The push-down blade 261 intercepts and receives the raw materials and transports them downward. The raw materials fall on the surface of the lifting blade 262, and the impact and downward pressure make them move downward along the wall of the stirring rod 26 through the sleeve 2621, compressing the first return spring 2622, driving the sealing colloid 2623 and the connecting rod 2624 to move, thereby releasing the blockage of the glue spray nozzle 2612, and the spring pull rod 2625 The adhesive in the extruded connecting liquid hole 2611 is sprayed outward onto the surface of the raw material, and the rotating lifting blade 262 rotates to upload the raw material, slowing down the falling speed and promoting mixing. After the raw material falls between the two-way dividing screw 23, the lifting blade 262 and other structures are reset, generating negative pressure to open the glue filling valve 2629, replenishing the adhesive in the connecting liquid hole 2611, and the rotating two-way dividing screw 23 disperses the raw material and enters the secondary exchange channel 116 again. The lump fertilizer meets the raw material output from the mixing barrel 115 and is mixed again, and falls into the discharge channel 117 and is discharged under the action of the discharge screw 21.

[0027] In summary, through the mixing machine box 11, the diverter channel 113, the filter frame 114, the mixing barrel 115, the secondary exchange channel 116, the discharging channel 117, the discharging screw 21, the bevel gear box 22, the bidirectional distributing screw 23, the toothed belt wheel group 24, the air drying fan 25, the stirring rod 26, the push-down blade 261, the connecting liquid hole 2611, the glue spray nozzle 2612, the lifting blade 262, the sleeve 2621, the first return spring 2 The arrangement of the sealing colloid 2622, the sealing colloid 2623, the connecting rod 2624, the spring pull rod 2625, the second return spring 2627, the glue filling tube 2628 and the glue filling valve 2629 can filter and collect the unmixed raw materials, and use the method of receiving the rotation downward transmission and receiving the rotation upward transmission to block and mix the downward transmission of the raw materials. At the same time, the lifting blade 262 will use the gravity of the falling raw materials to move downward to realize the spraying of glue. The nozzle 2612 is temporarily opened and the spring pull rod 2625 is dragged downward, and then the downward spring pull rod 2625 is used to compress the adhesive inside the connecting liquid hole 2611, so that the adhesive is sprayed through the glue spray nozzle 2612 onto the surface of the raw materials transported by the upward lifting blade 262, so as to realize the glue spraying treatment of the raw materials. Then the raw materials will be broken up into strips again by the two-way material distribution screw 23, and mixed with the stabilized lump fertilizer inside the secondary exchange channel 116, and finally output to the outside under the action of the discharging screw 21, so as to realize efficient mixing of the controlled-release blended fertilizer raw materials. Compared with the current fertilizer mixing equipment, it is not just a simple mixing of the fertilizer, but the shaping of the state of the fertilizer after mixing, to ensure that the fertilizer after output maintains a uniform nutrient state, which is more conducive to the subsequent nutritionally balanced granulation operation, and to ensure the high-quality production of controlled-release blended fertilizers.

[0028] Working principle: When working, first connect the conveying mechanism of the raw material storage bin with the interface on the upper surface of the feed end cover 12, and then connect the toothed belt wheel at the end of the discharge screw 21 with the drive motor through the toothed belt, and then the production and mixing of the fertilizer raw materials can be carried out; when performing the mixing of the fertilizer raw materials, first input the required raw materials into the feed end cover 12, and enter the interior of the guide channel 111 under the mixed conveying of the feed end cover 12, and then the raw materials entering the guide channel 111 will be transformed from columnar conveying to diffused belt-shaped, at this time, the cams 27 on both sides of the middle guide channel 111 will rotate under the drive of the drive motor in conjunction with the discharge screw 21, the bevel gear box 22, the bidirectional material distribution screw 23, the toothed belt wheel group 24 and the stirring rod 26, and then the cams 27 will be intermittent. The spring piston rod 271 is pushed to move back and forth along the glue spraying tube 272. The reciprocating spring piston rod 271 not only compresses the adhesive inside the glue spraying tube 272 and sprays it to the inside of the spraying slot 1111 through the nozzle, and diffuses it from the spraying slot 1111 to the inside of the material guide channel 111, spraying the adhesive on the raw materials transported inside the material guide channel 111, but also creates a negative pressure environment inside the glue spraying tube 272 to suck and supplement the adhesive inside the communicating liquid hole 2611, and then the fertilizer raw material sprayed with the adhesive is input into the inside of the exchange channel 112, and intersects with other fertilizer raw materials and additives inside the exchange channel 112, and then the fertilizer raw materials and additives are bonded together after the intersection, and the bonding presents an irregular shape. The fertilizer in small clumps will then fall on the surface of the filter rack 114, and then be filtered by the filter rack 114 and be diverted to the inside of the diversion channels 113 on both sides. The raw materials that are not bonded or detached will enter the mixing barrel 115 and fall on the surface of the rotating push-down blade 261. The push-down blade 261 will then intercept and receive the raw materials and transport and conduct them downward. The fallen raw materials will fall on the surface of the lifting blade 262 and impact and press the lifting blade 262 downward according to gravity. Then, the lifting blade 262 will move downward along the tube wall of the stirring rod 26 through the sleeve 2621 under the action of the gravity of the raw materials. The downwardly moving sleeve 2621 will compress the first return spring 2622 and drive the sealing colloid 2623 and the connecting rod 2624 along the mixing barrel 115. The glue spray nozzle 2612 is opened and the connecting rod 2624 is connected to the upper lifting blade 262 to transfer the raw material to the upper lifting blade 262.Thereby, the falling speed of the raw materials is slowed down, and the mixing of the raw materials is promoted, ensuring that the raw materials are sprayed and covered with the adhesive and are fully mixed. Then, the raw materials will be separated from the support of the lifting blade 262 under the rotation and transmission action of the single-piece lifting blade 262, and fall between the two-way material distribution screws 23. At this time, the lifting blade 262 and the sleeve 2621 will be reset under the action of the first reset spring 2622, and then the structure connected to the sleeve 2621 will be reset. When the top spring pull rod 2625 is reset, this action will directly cause the space volume of the liquid hole 2611 below it to change, which is specifically manifested as an increase in the space volume. This means that if the volume in a closed system increases without new gas or liquid being replenished, the air pressure in the system will drop, thereby forming a negative pressure environment below atmospheric pressure. The generation of negative pressure environment will further trigger the opening mechanism of the glue filling valve 2629 to open downward, and then the adhesive will enter the connecting liquid hole 2611 below the spring pull rod 2625, so as to replenish the adhesive inside the connecting liquid hole 2611 below, and then the rotating two-way material distribution screw 23 will disperse the raw materials to both ends, so that it will be transported into the secondary exchange channel 116 in a belt shape again. At the same time, the rotating two-way material distribution screw 23 will pass through the toothed belt pulley group 24 to the wind The drying fan 25 is driven to rotate, so that the drying fan 25 blows air to the surface of the fertilizer agglomerates diverted in the diverting channel 113 to dry the fertilizer agglomerates, so that the fertilizer agglomerates reach a stable bonding state, and then the fertilizer agglomerates will enter the secondary exchange channel 116 along the diverting channel 113, and intersect with the raw materials output from the mixing barrel 115, and perform sticking and mixing again. The mixed raw materials will fall into the discharge channel 117 and be discharged outward through the output port under the action of the rotating discharge screw 21.

[0029] It should be noted that all positions and structures of the device that are in contact with the raw materials are sprayed with anti-stick and anti-corrosion coatings; the upper side of the rubber filling tube 2628 is isolated and sealed by a sealing gasket; the raw material intersection pipeline of the feed end cover 12 is set as a twisted spiral connecting channel as needed to facilitate the initial sufficient mixing of the raw materials; the interface in the middle of the feed end cover 12 is connected to the main fertilizer raw material bin, and the interfaces on both sides are connected to the secondary fertilizer raw material bin and the additive bin.

[0030] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A high-efficiency raw material mixing equipment for the production of controlled-release blended fertilizers, characterized in that: include: A mixing body (1) is provided with a groove communicating with each other from top to bottom, so as to provide a mixing space for the input raw materials; The mixing structure (2) is assembled inside the mixing body (1) from top to bottom, and is used to cooperate with the mixing body (1) to perform efficient mixing of fertilizers; The mixing machine body (1) comprises a mixing box (11), wherein three material guide channels (111) are provided inside the mixing box (11), wherein a spraying notch (1111) is provided on the inner wall of one of the material guide channels (111), wherein an exchange channel (112) is provided inside the mixing box (11) at the lower end of the material guide channel (111), and mixing barrels (115) are fixedly arranged at intervals directly below the exchange channel (112) inside the mixing box (11), and wherein the mixing barrels (115) are provided at the lower end of the exchange channel (112). A filter rack (114) is fixedly provided at the upper end of the material barrel (115); a diversion channel (113) is provided inside the mixing box (11) on both sides of the mixing barrel (115); a secondary exchange channel (116) is provided inside the mixing box (11) at the lower end of the diversion channel (113) and the lower end of the mixing barrel (115); and a discharge channel (117) with an open end is provided inside the mixing box (11) below the secondary exchange channel (116); The mixing structure (2) comprises a discharge screw (21), the discharge screw (21) being rotatably arranged inside a discharge channel (117), a bevel gear box (22) being arranged between the discharge screws (21) for transmission, a bidirectional material distribution screw (23) being rotatably arranged at a lower port of a mixing barrel (115) directly above the discharge screw (21), and a bevel gear box (22) being similarly connected to the discharge screws (21), both ends of the bidirectional material distribution screw (23) extending out of the mixing box (11) and being connected to a plurality of air drying fans (25) through two sets of toothed belt pulleys (24), the air drying fans (25) being mounted and fixed on the front and rear sides of the mixing box (11) corresponding to the flow divider. The rotating shaft of one of the bevel gears of the bevel gear box (22) connected to the bidirectional material distribution screw (23) extends upward into the mixing barrel (115) and is connected to a stirring rod (26) rotatably arranged in the mixing barrel (115) through a coupling. A plurality of push-down blades (261) are fixed to the upper half of the side of the stirring rod (26), and a plurality of lifting blades (262) are arranged on the lower half of the stirring rod (26). The push-down blades (261) are fixed to a sleeve (2621) slidably sleeved on the surface of the stirring rod (26), and the lower annular surface of the sleeve (2621) is slidably sleeved in a preset slide groove on the surface of the stirring rod (26). The sleeve (2621) is provided with a sealing colloid (2623) above the inner wall of the sleeve (2621), and a glue spray nozzle (2612) connected to the internal communication liquid hole (2611) of the stirring rod (26) is installed at the same position of the sealing colloid (2623) inside the tube shell of the stirring rod (26). The sleeve (2621) and the spring pull rod (2625) are fixed by a connecting rod (2624). The upper end of the spring pull rod (2625) is slidably inserted into a limited insertion hole provided inside the upper spring pull rod (2625) or the stirring rod (26), and the sliding limit of the upper end of the spring pull rod (2625) is performed by a second return spring (2627). The spring pull rod (2625) is provided with a glue supply pipe (2628) in communication with the connecting liquid hole (2611), and a glue supply valve (2629) is arranged at the upper end of the glue supply pipe (2628). The upper end of the stirring rod (26) cooperates with the bevel gear box (22) and the two sets of toothed belt pulleys (24) to be fixed to the cam (27) rotatably arranged inside the mixer box (11). The wheel side surface of the cam (27) is always in active contact with one end of the spring piston rod (271), and the spring end of the spring piston rod (271) is slidably limited and arranged inside the glue spray pipe (272), and the glue spray pipe (272) is fixedly arranged at the center position of the spraying slot (1111) inside the mixer box (11).

2. The high-efficiency raw material mixing equipment for producing controlled-release blended fertilizers according to claim 1, characterized in that: The upper end of the mixer box (11) is mounted with a feed end cover (12) by means of bolts. The upper surface of the feed end cover (12) is integrally provided with a plurality of interfaces for feeding materials into the mixer box (11) from the center to the periphery, and interfaces on both sides of the central interface are connected and arranged to converge, and after being connected, the interfaces form three independent conveying pipelines, and the lower ends of the material guide channels (111) on both sides are arranged to be inclined toward the central material guide channel (111).

3. The high-efficiency raw material mixing equipment for producing controlled-release blended fertilizers according to claim 1, characterized in that: The discharge screw (21) is rotatably arranged inside the discharge channel (117), and a portion of the rod body is cut off from the center position and is broken into two parts, and one end of the broken rod body passes through the mixer box (11) and is fixed to a toothed belt wheel driven by a driving motor. The bevel gear box (22) is composed of a bearing box body and at least two bevel gears, and the bevel gears are mutually driven and meshed. The bidirectional material distribution screw (23) is also broken into two rod body parts from the middle position, and the spiral directions of the two rod body parts are arranged in opposite directions.

4. The high-efficiency raw material mixing equipment for producing controlled-release blended fertilizers according to claim 1, characterized in that: The toothed belt wheel groups (24) each consist of two toothed belt wheels and a toothed belt for transmission connection with the toothed belt wheels, and the wheel axle of one of the toothed belt wheels of the two toothed belt wheel groups (24) is fixed to the impeller shaft of an air-drying fan (25), and the air-drying fan (25) is also connected to the other air-drying fan (25) by a toothed belt wheel group (24).

5. The high-efficiency raw material mixing equipment for producing controlled-release blended fertilizers according to claim 1, characterized in that: The spiral direction of the upward-lifting blade (262) is arranged opposite to that of the downward-pushing blade (261).

6. The high-efficiency raw material mixing equipment for producing controlled-release blended fertilizers according to claim 1, characterized in that: A designated sliding slideway is provided inside the tube shell of the stirring rod (26) directly below the glue spray nozzle (2612), and a connecting rod (2624) is slidably provided inside the slideway. A piston structure is provided at the lower end of the spring pull rod (2625) located at the bottom, and a sufficient sliding distance exists between the lower end of the piston and the tube end of the stirring rod (26).

7. The high-efficiency raw material mixing equipment for producing controlled-release blended fertilizers according to claim 1, characterized in that: The upper end of the stirring rod (26) is fixed to the axle of one of the bevel gears inside the bevel gear box (22), and a through hole is provided inside the bevel gear that is connected to the communication fluid hole (2611), and the corresponding through hole inside the bevel gear box (22) continues to extend upwards and is connected, and the bevel gear box (22) is provided with a three-way adhesive communication interface (221) at the upper end of the extended through hole, wherein the middle interface is connected to an external adhesive supply device.

8. The high-efficiency raw material mixing equipment for producing controlled-release blended fertilizers according to claim 1, characterized in that: The glue spraying tube (272) is fixedly provided with an interface and a pressure spray head on the tube side and inside at the opposite end of the spring piston rod (271), and the spraying notch (1111) has sufficient space for spraying glue inside the material guide channel (111).

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