Double feeding port type water-soluble fertilizer crushing device

Abstract

The application discloses a double-feeding-port type water-soluble fertilizer crushing device, and relates to the technical field of crushing equipment.The device comprises a rack, a feeding box, a urea particle feeding port and a potassium sulfate powder feeding port formed in the feeding box, a crushing material box communicated and installed at the bottom of the feeding box, a crushing roller installed in the crushing material box, a crushed mixing cylinder installed at the bottom of the crushing material box, a spiral blade roller installed in the crushed mixing cylinder, a differential mechanism arranged between the spiral blade roller and the crushing roller and used for transmission cooperation, a first supporting frame, a differential mechanism used for stable installation of the crushing roller and the spiral blade roller, and a discharging box communicated and installed at the bottom of the crushed mixing cylinder.The device can realize zoned crushing and mixing, solves the problem of material interference, realizes high-speed crushing and low-speed fine crushing through differential transmission, ensures that urea particles are fully refined, allows potassium sulfate powder to be uniformly adsorbed on the urea particles, and thus high-quality water-soluble fertilizer with stable components and uniform mixing is obtained.

Description

Technical Field

[0001] This invention relates to the field of crushing technology, and specifically discloses a dual-feed-inlet water-soluble fertilizer crushing device. Background Technology

[0002] Urea granules and powdered potassium sulfate, when crushed and mixed, can form a highly efficient water-soluble fertilizer, mainly due to the fact that both are highly water-soluble plant nutrient carriers. Urea rapidly hydrolyzes in water to provide a nitrogen source, while potassium sulfate ionizes to release potassium ions that are easily absorbed by plants. After physical mixing, the two quickly dissolve in water to form a homogeneous nutrient solution. The main advantages of this water-soluble fertilizer are: firstly, it achieves precise synergy and on-demand distribution of nitrogen and potassium nutrients; secondly, it dissolves completely and the resulting solution is relatively clear, reducing the risk of clogging in precision irrigation systems; and thirdly, the formula is chlorine-free and has a low salt index, making it relatively safe for roots, thus making it a common water-soluble fertilizer.

[0003] The utility model patent with authorization announcement number CN222855614U discloses a urea crusher for water-soluble fertilizer production, including a crushing box one and a crushing box two. The crushing box one is equipped with a feed hopper and a crushing mechanism inside. The crushing box one is equipped with a screening mechanism located below the crushing mechanism and adjusted by an adjustment mechanism. The bottom of the crushing box one is equipped with a discharge port. A slot matching the screening mechanism is opened on one side wall of the crushing box. An outlet plate is inclined at the end of the slot. The crushing box one and the crushing box two have the same structure, and the outlet plate of the crushing box one matches the feed hopper of the crushing box two.

[0004] Urea granules are highly hygroscopic and easily absorb moisture from the air during storage, causing surface deliquescence. After the moisture evaporates, the urea recrystallizes, forming crystal bridges between the granules and causing them to clump together. Therefore, the aforementioned urea crushing equipment is needed to crush the urea, while simultaneously adding powdered potassium sulfate into the crushing chamber, allowing the mixing of urea granules and potassium sulfate powder to occur synchronously within the same chamber. This results in interference between two key processes: the crushing process requires sufficient space, time, and mechanical force to thoroughly break up the clumped urea, while the mixing process requires gentle and uniform stirring of the pre-treated homogeneous material. In practice, larger urea particles that have not been fully crushed come into contact with powdered potassium sulfate prematurely. On the one hand, these particles become more slippery due to being coated with fine powder, making them difficult to be effectively captured and further crushed by the crushing components. On the other hand, potassium sulfate powder adheres locally to their surface, forming an unevenly mixed mixture. This results in residual coarse urea in the final product, and the nutrient distribution is extremely uneven. This not only seriously affects the dissolution rate and clarity of the water-soluble fertilizer, easily clogging the irrigation system, but also makes it impossible to guarantee the accuracy of fertilization, resulting in poor and unstable product quality. Summary of the Invention

[0005] To address the problem of uneven mixing of urea granules and powdered potassium sulfate during the crushing and mixing process, which is often caused by poor crushing of caking urea granules, this invention provides a dual-feeding-port water-soluble fertilizer crushing device.

[0006] To address the above problems, the present invention provides the following technical solution: A dual-feeding-port water-soluble fertilizer crushing device includes a frame, a feeding box at the top of the frame with urea granule inlet and potassium sulfate powder inlet, a crushing hopper connected to the bottom of the feeding box, a crushing roller rotatably mounted inside the crushing hopper for initial crushing of agglomerated urea granules, a mixing cylinder connected to the bottom of the mixing cylinder, multiple stabilizing seats fixedly fitted around the mixing cylinder and fastened to the frame, a spiral impeller rotatably mounted inside the mixing cylinder for further crushing urea granules and mixing with potassium sulfate powder, a first support frame fixedly mounted on the side of the frame, a differential speed mechanism between the spiral impeller and the crushing roller for transmission, the differential speed mechanism causing the crushing roller to rotate at a higher speed than the spiral impeller, the differential speed mechanism being stably mounted on the first support frame, and a discharge box connected to the bottom of the mixing cylinder for the discharge of the mixture of urea granules and potassium sulfate powder.

[0007] Preferably, the urea granule inlet is a vertical opening located on the side of the feeding box, and the potassium sulfate powder inlet is a horizontally angled opening located on the top of the feeding box. A partition plate is fixedly installed inside the feeding box, and the urea granule inlet and the potassium sulfate powder inlet are respectively located on both sides of the partition plate. A cover plate is installed on the urea granule inlet, and a cover door is installed on the potassium sulfate powder inlet. The cover door is provided with a handle.

[0008] Preferably, the crushing box has a vertical plate and an inclined plate on its two sides, the vertical cross-section of the crushing box is a right trapezoid, the urea granule feed inlet is arranged above the side near the vertical plate, and the potassium sulfate powder feed inlet is arranged above the side near the inclined plate; the distance between the crushing roller and the vertical plate is smaller than the distance between the crushing roller and the inclined plate.

[0009] Preferably, the outer wall of the crushing roller is provided with a plurality of fin-shaped blades, which are distributed circumferentially along the roller axis of the crushing roller.

[0010] Preferably, a second mounting bracket is fixedly installed on the side of the platform, a variable frequency motor is fixedly installed on the second mounting bracket, a first belt reel is securely fitted around the output shaft of the variable frequency motor, a second belt reel is securely fitted around the crushing roller, and a belt is fitted together between the first belt reel and the second belt reel.

[0011] Preferably, the differential mechanism includes a dial, the inner surface of which is fastened to the outer end of the crushing roller. A shelf is fixedly installed on the first mounting frame, and a first bearing seat is fixedly installed at the bottom of the top layer of the shelf. A bearing rod is fitted inside the first bearing seat. The bearing rod is arranged parallel to the crushing roller and the spiral blade roller. A turntable is fastened to the periphery of the bearing rod. A groove is provided on the dial, and multiple first shift posts are fixedly installed on the turntable at equal intervals. The first shift posts are circumferentially distributed along the axis of the bearing rod, and each first shift post is arranged parallel to the bearing rod. The inner wall of the groove can slide in contact with the outer wall of the first shift post.

[0012] Preferably, the turntable has a stepped structure, comprising a first stepped plate and a second stepped plate. The first deflector is fixedly installed on the first stepped plate, and multiple second deflectors arranged at equal intervals are installed on the second stepped plate. The second deflectors are distributed circumferentially along the axis of the supporting rod, and the number of second deflectors is the same as the number of first deflectors. A lever is fixedly installed on the outer surface of the turntable, and the lever can make contact with the outer wall of the second deflectors.

[0013] Preferably, a second bearing seat is fixedly installed at the bottom of the shelf, the outer front end of the spiral blade roller is fitted into the second bearing seat, a first chain disc is firmly fitted around the periphery of the bearing rod, a second chain disc is firmly fitted around the periphery of the front end of the spiral blade roller, and a chain is fitted together between the first chain disc and the second chain disc.

[0014] Preferably, a first inner cylinder and a second inner cylinder are fixedly installed inside the crushing and mixing cylinder. The first inner cylinder is arranged around the rear end of the spiral blade roller, and the second inner cylinder is arranged around the first inner cylinder. A vertically arranged discharge cylinder is provided at the bottom of the discharge box. A first discharge area and a second discharge area are respectively provided on the first inner cylinder and the second inner cylinder. The first discharge area and the second discharge area are arranged overlappingly and are both located on the side close to the crushing box.

[0015] Preferably, the area of ​​the second discharge zone is larger than that of the first discharge zone. The first discharge zone is provided with a plurality of uniformly arranged first discharge holes, and the second discharge zone is provided with a plurality of uniformly arranged second discharge holes. The diameter of the second discharge holes is larger than that of the first discharge holes.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. This invention first sets up a double-feeding-inlet feed box with a partition plate, which physically separates the caking urea particles from the potassium sulfate powder, preventing the phenomenon that uncrushed urea particles become difficult to crush due to premature adsorption of powder. Subsequently, the urea particles and potassium sulfate powder enter the crushing box with a right-angled trapezoidal cross-section. The crushing roller has a narrower gap on the side closer to the vertical plate, which forces the urea particles to undergo forced initial crushing by the high-speed rotating crushing roller with fin-shaped blades, while the potassium sulfate powder passes smoothly through the side with a wider gap on the inclined plate. The two are still effectively separated during the crushing stage. The above-mentioned design structure of separate feeding and zoned crushing fundamentally decouples the high-intensity mechanical action space required for crushing from the gentle stirring space required for mixing in the process, laying a solid material foundation for subsequent uniform crushing and mixing.

[0017] 2. In this invention, the initially crushed urea particles and potassium sulfate powder enter the mixing drum together. The crushing roller is driven at a speed significantly higher than that of the spiral blade roller through a differential speed mechanism consisting of a dial, turntable, lever, and chain. This results in a primary crushing efficiency of the urea particles that is much higher than their mixing and forward speed within the mixing drum. This allows the urea particles and potassium sulfate powder to have a longer residence time and more opportunities to be further ground and dispersed in the spiral blade roller area. Simultaneously, the spiral blades on the spiral blade roller continuously shear and stir the mixture at a lower speed, which also allows the potassium sulfate powder to be evenly embedded and adhered to the continuously refined and refreshed urea particles. The aforementioned differential speed synergistic operation mechanism, with high-speed crushing preceding low-speed fine mixing, effectively eliminates the residual amount of coarse urea particles, ensuring that the final product can quickly dissolve into a clear solution.

[0018] 3. The mixing cylinder of the present invention has a first inner cylinder and a second inner cylinder nested inside, forming two annular cavities with the spiral impeller: a mixing gap and a passage gap. The initially mixed material, driven by the spiral impeller, must first pass through the first discharge hole with a smaller diameter on the first inner cylinder. This process is equivalent to a forced screening and homogenization, blocking particles that do not meet the fineness requirements. Subsequently, the material enters the passage gap and is discharged through the second discharge hole with a larger diameter on the second inner cylinder, completing the second diffusion and mixing. The above-mentioned passage path from the inside out and through two stages of screening and redistribution with different apertures greatly extends the mixing process, forcing the material to undergo multiple diversions, mergings, and shearings, ensuring that potassium sulfate powder can be uniformly adsorbed on urea particles, thereby obtaining a high-quality water-soluble fertilizer product with stable composition and uniform mixing, ensuring the stability of product production. Attached Figure Description

[0019] To more clearly illustrate the technical solution of the present invention, the drawings used in the description will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Figure 1 This is a schematic diagram of the overall device structure of the present invention. Figure 1 ; Figure 2 This is a schematic diagram of the overall device structure of the present invention. Figure 2 ; Figure 3 This is a schematic diagram of the installation structure of the feed box and crushing box of the present invention; Figure 4 This is a schematic diagram of the arrangement structure of the urea granule feed inlet and potassium sulfate powder feed inlet of the present invention. Figure 5 This is a schematic diagram of the internal structure of the crushing bin of the present invention; Figure 6 This is a schematic diagram of the dial and shelf mounting structure of the present invention; Figure 7 This is a schematic diagram of the dial and turntable transmission structure of the present invention; Figure 8 This is a schematic diagram of the arrangement structure of the first and second derailleurs of the present invention; Figure 9 This is a schematic diagram of the discharge box installation structure of the present invention; Figure 10 This is a schematic diagram of the first inner tube and the second inner tube structure of the present invention; In the diagram: 1. Platform, 2. Feed box, 3. Urea granule feed inlet, 4. Potassium sulfate powder feed inlet, 5. Crushing box, 501. Vertical plate, 502. Inclined plate, 6. Crushing roller, 7. Crushing and mixing cylinder, 8. Stabilizing seat, 9. Spiral blade roller, 10. First support frame, 11. Differential mechanism, 1101. Dial plate, 1102. Shelf, 1103. First bearing seat, 1104. Bearing rod, 1105. Turntable, 110501. First ladder plate, 110502. Second ladder plate, 1106. Groove, 1107. First shifting column, 1108. 1109. Second lever, 1110. Second bearing seat, 1111. First chain disc, 1112. Second chain disc, 1113. Chain, 12. Discharge box, 13. Partition plate, 14. Cover plate, 15. Cover door, 16. Handle, 17. Fin-shaped blade, 18. Second mounting bracket, 19. Variable frequency motor, 20. First belt reel, 21. Second belt reel, 22. Belt, 23. First inner cylinder, 24. Second inner cylinder, 25. Discharge cylinder, 26. First discharge area, 27. Second discharge area, 28. First discharge hole, 29. Second discharge hole. Detailed Implementation

[0020] To make the objectives, features, and advantages of this invention more apparent and understandable, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings of the specific embodiments. Obviously, the embodiments described below are only some embodiments of this invention, and not all embodiments. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0021] This specific embodiment provides a dual-feed-inlet water-soluble fertilizer crushing device, such as... Figures 1-10 As shown, the system includes a platform 1, which is a square platform structure with a hollow interior. Each of the four corners of the platform has feet to facilitate stable placement on the ground. A feed hopper 2 is located above the platform 1, and a crushing hopper 5 is connected to the bottom of the feed hopper 2. The top opening of the crushing hopper 5 is connected to the bottom port of the feed hopper 2, forming a continuous material flow channel.

[0022] The feed box 2 is provided with a urea granule feed inlet 3 and a potassium sulfate powder feed inlet 4. The front and rear sides of the crushing box 5 are respectively a vertical plate 501 and an inclined plate 502. The vertical section of the crushing box 5 is a right trapezoid. The urea granule feed inlet 3 is a vertical opening and is arranged above the side of the vertical plate 501, so that the urea granule feed inlet 3 is arranged on the side of the feed box 2. The potassium sulfate powder feed inlet 4 is an oblique horizontal opening and is arranged above the side of the inclined plate 502, so that the potassium sulfate powder feed inlet 4 is arranged at the top of the feed box 2.

[0023] The urea granule inlet 3 is used to feed the caking urea granules into the feed box 2, and the potassium sulfate powder inlet 4 is used to feed the potassium sulfate powder into the feed box 2. A partition plate 13 is fixedly installed inside the feed box 2. The partition plate 13 can divide the internal space of the feed box 2 into two parts, so that the urea granule inlet 3 and the potassium sulfate powder inlet 4 are respectively arranged on both sides of the partition plate 13, thereby forming two feed chambers in the inner cavity of the feed box 2, avoiding premature contact between urea granules and potassium sulfate powder in the feed box 2. A cover plate 14 is installed on the urea granule inlet 3, and a cover door 15 is installed on the potassium sulfate powder inlet 4. The cover plate 14 and the cover door 15 can be used to seal the urea granule inlet 3 and the potassium sulfate powder inlet 4 in a timely manner, so that external dust is prevented from entering the feed box 2 when the device is idle, thus ensuring the purity of the water-soluble fertilizer produced by the device. In addition, a handle 16 is provided on the cover door 15, which can be easily opened in a timely manner.

[0024] The crushing hopper 5 is equipped with a crushing roller 6. Both ends of the crushing roller 6 are connected to the left and right sides of the crushing hopper 5 via rolling bearings. During rotation, the crushing roller 6 can rotate in conjunction with the left and right side plates of the crushing hopper 5. The crushing roller 6 is positioned directly below the partition plate 13. The distance between the crushing roller 6 and the vertical plate 501 is smaller than the distance between the crushing roller 6 and the inclined plate 502, resulting in a smaller material passage space on the side of the crushing roller 6 closer to the vertical plate 501 than on the side closer to the inclined plate 502. Multiple fin-shaped blades 17 are provided on the outer wall of the crushing roller 6. These fin-shaped blades 17 are circumferentially distributed along the roller's axis. When the crushing roller 6 rotates, the fin-shaped blades 17 can perform preliminary crushing of the agglomerated urea particles.

[0025] The bottom of the crushing hopper 5 is connected to a crushing and mixing cylinder 7, which is a horizontal cylindrical structure. The top of the crushing and mixing cylinder 7, near the crushing hopper 5, has an upper opening that is securely connected to the bottom port of the crushing hopper 5, thus forming a continuous material passage. The bottom of the crushing and mixing cylinder 7, away from the crushing hopper 5, has a lower opening facing downwards from the platform 1. Multiple stabilizing seats 8 are fixedly fitted around the crushing and mixing cylinder 7, each securely connected to the top of the platform 1, thereby fixing the crushing and mixing cylinder 7 to the top of the platform 1 and providing a stable support structure for the feed hopper 2 and the crushing hopper 5.

[0026] A spiral blade roller 9 is rotatably installed inside the crushing and mixing cylinder 7. The two ends of the spiral blade roller 9 can be rotatably engaged with the two sides of the crushing and mixing cylinder 7, and are rotatably engaged with the frame 1 through the installation of bearing housings. Spiral blades are fixedly provided on the outer wall of the spiral blade roller 9. The spiral blades can further crush the urea particles entering the crushing and mixing cylinder 7 and mix them with potassium sulfate powder.

[0027] A second support frame 18 is fixedly installed on the front side of the platform 1. A variable frequency motor 19 is fixedly installed on the second support frame 18. A first belt reel 20 is securely fitted around the output shaft of the variable frequency motor 19. A second belt reel 21 is securely fitted around the crushing roller 6. The second belt reel 21 is arranged on the outside of the crushing box 5. A belt 22 is fitted between the first belt reel 20 and the second belt reel 21, thereby driving the variable frequency motor 19 to drive the crushing roller 6 to rotate at high speed.

[0028] The spiral impeller 9 and the crushing roller 6 are arranged in parallel, and a differential speed mechanism 11 is provided between the spiral impeller 9 and the crushing roller 6 for transmission cooperation. The differential speed mechanism 11 includes a dial 1101, the inner surface of which is fastened to the outer end of the crushing roller 6, so that the dial 1101 is arranged outside the second belt disc 21. A first support frame 10 is fixedly installed on the left side of the frame 1, and a shelf 1102 is fixedly installed on the first support frame 10. The shelf 1102 has two layers, a top layer and a bottom layer. A first bearing seat 1103 is fixedly installed at the bottom of the top layer of the shelf 1102. A bearing rod 1104 is fitted inside the first bearing seat 1103, so that the first bearing seat 1103 can stably support the rotation of the bearing rod 1104. The bottom layer of the shelf 1102 is fixedly installed with a second bearing seat 1110. The left front end of the spiral blade roller 9 is externally fitted into the second bearing seat 1110, so that the second bearing seat 1110 provides stable rotational support for the spiral blade roller 9.

[0029] The bearing rod 1104 is arranged in parallel with the crushing roller 6 and the spiral blade roller 9. A turntable 1105 is fastened around the bearing rod 1104. The turntable 1105 has a stepped structure. The turntable 1105 includes a first ladder 110501 and a second ladder 110502. The outer diameter of the second ladder 110502 is smaller than the diameter of the first ladder 110501. Multiple first deflector pins 1107 are fixedly installed on the first ladder 110501. The first deflector pins 1107 are circumferentially distributed along the axis of the support rod 1104 and are evenly distributed on the outer side of the second ladder 110502. Multiple second deflector pins 1108 are installed on the second ladder 110502 and are equally spaced. The second deflector pins 1108 are circumferentially distributed along the axis of the support rod 1104. The number of second deflector pins 1108 is the same as the number of first deflector pins 1107, and the first deflector pins 1107 and second deflector pins 1108 correspond one-to-one and are spaced at the same angle. The dial 1101 has a groove 1106. When the dial 1101 rotates with the crushing roller 6, the inner wall of the groove 1106 can slide in contact with the outer wall of each first pin 1107, and each first pin 1107 enters and exits the groove 1106 in sequence, thereby driving the turntable 1105 to rotate.

[0030] A lever 1109 is fixedly installed on the outer surface of the dial 1101, and the lever 1109 is arranged on the side of the groove 1106. When the dial 1101 rotates, the lever 1109 can make contact with the outer wall of the second lever 1108, so that the groove 1106 and the lever 1109 form a linkage structure and work together to rotate the turntable 1105.

[0031] The first chain plate 1111 is securely fitted around the outer periphery of the bearing rod 1104. The first chain plate 1111 is arranged on the outer side of the turntable 1105. The second chain plate 1112 is securely fitted around the front end of the spiral blade roller 9. A chain 1113 is fitted between the first chain plate 1111 and the second chain plate 1112, so that the turntable 1105 drives the spiral blade roller 9 to rotate, and the rotation speed of the spiral blade roller 9 is lower than that of the crushing roller 6.

[0032] The crushing and mixing cylinder 7 is internally fixedly equipped with a first inner cylinder 23 and a second inner cylinder 24. The first inner cylinder 23 is arranged around the rear end of the spiral roller 9, and the second inner cylinder 24 is arranged around the first inner cylinder 23, so that there is a crushing and mixing gap between the first inner cylinder 23 and the spiral roller 9, and a passage gap between the second inner cylinder 24 and the first inner cylinder 23. The first inner cylinder 23 and the second inner cylinder 24 are respectively provided with a first discharge area 26 and a second discharge area 27, which are arranged overlappingly and are both located on the side close to the crushing box 5.

[0033] The area of ​​the second discharge zone 27 is larger than that of the first discharge zone 26. The first discharge zone 26 is provided with a plurality of uniformly arranged first discharge holes 28, and the second discharge zone 27 is provided with a plurality of uniformly arranged second discharge holes 29. The diameter of the second discharge holes 29 is larger than that of the first discharge holes 28. When the spiral roller 9 rotates, urea particles and potassium sulfate powder are mixed in the mixing gap. The mixture of the two enters the gap through the first discharge hole 28 and can enter the outer layer of the mixing cylinder 7 through the second discharge hole 29.

[0034] The bottom of the mixing cylinder 7 is connected to a discharge box 12, and the outer wall of the discharge box 12 is firmly connected to the frame 1. A vertically arranged discharge cylinder 25 is provided at the bottom of the discharge box 12. The first discharge area 26 and the second discharge area 27 are both located on the left side of the discharge cylinder 25. The discharge cylinder 25 can be used to discharge the mixture of urea granules and potassium sulfate powder from the discharge box 12. The spiral roller 9 is provided with a shoulder, the outer diameter of which is larger than the outer diameter of other parts of the spiral roller 9. This shoulder is located directly above the spiral roller 9 and can divide the mixing gap into left and right chambers, effectively preventing urea granules and potassium sulfate powder from entering the right chamber, i.e., the right side region at the top of the discharge cylinder 25, thus avoiding the accumulation of urea granules and potassium sulfate powder in the mixing gap.

[0035] The working principle of this invention is as follows: Operators can feed the caking urea granules into the feed box 2 through the urea granule inlet 3, and at the same time feed the potassium sulfate powder into the feed box 2 through the potassium sulfate powder inlet 4. Since the feed box 2 is equipped with a partition plate 13, the caking urea granules can avoid contact with the potassium sulfate powder, thus avoiding adsorption.

[0036] The caking urea particles can pass through the crushing roller 6 from the front side of the crushing bin 5, that is, the side near the vertical plate 501. By starting the variable frequency motor 19, the crushing roller 6 is made to rotate at high speed, thereby causing the fin blades 17 to initially crush the caking urea particles into large particles. Potassium sulfate powder can pass through the crushing bin 5 from the side near the inclined plate 502, and it can be ensured that the potassium sulfate powder avoids contact with the urea particles.

[0037] The initially crushed urea granules and potassium sulfate powder simultaneously enter the inner cavity on the left side of the crushing and mixing cylinder 7. At the same time, the dial 1101 drives the turntable 1105 to rotate, and each of the first dial pins 1107 enters and exits the groove 1106 in sequence. When each first dial pin 1107 enters or exits the groove 1106, the dial 1101 can rotate one revolution. After all the first dial pins 1107 have entered and exited the groove 1106, the turntable 1105 can rotate one revolution, thus creating a differential speed effect, making the rotation speed of the crushing roller 6 higher than that of the spiral blade roller 9. At the same time, the lever 1109 can simultaneously move the second dial pin 1108 to assist the rotation of the turntable 1105.

[0038] Through the transmission structure of the first chain disk 1111 and the second chain disk 1112, the rotation speed of the spiral roller 9 and the turntable 1105 is kept consistent. The urea particles after preliminary crushing can be mixed with potassium sulfate powder in the crushing and mixing gap. Therefore, the initial crushing rate of the urea particles is greater than the crushing and mixing rate of the urea particles in the crushing and mixing cylinder 7, which can ensure that the potassium sulfate powder is fully and uniformly adsorbed on the surface of the urea particles. Through the rotation of the spiral roller 9, the crushed and mixed mixture enters the passage gap through the first discharge hole 28, further ensuring the uniformity of potassium sulfate powder adsorption, and then enters the outer layer of the crushing and mixing cylinder 7 through the second discharge hole 29, then enters the discharge box 12, and finally is sent out of the device through the discharge cylinder 25.

[0039] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A dual-feeding-port type water-soluble fertilizer crushing device, comprising a frame (1), characterized in that, A feed box (2) is provided above the frame (1). The feed box (2) has a urea granule feed port (3) and a potassium sulfate powder feed port (4). A crushing box (5) is connected to the bottom of the feed box (2). A crushing roller (6) is rotatably installed inside the crushing box (5). The crushing roller (6) is used to initially crush the caking urea granules. A crushing and mixing cylinder (7) is connected to the bottom of the crushing box (5). Multiple stabilizing seats (8) that are fastened to the frame (1) are fixedly fitted around the crushing and mixing cylinder (7). A spiral blade roller is rotatably installed inside the crushing and mixing cylinder (7). 9), the spiral blade roller (9) is used to further crush urea particles and mix them with potassium sulfate powder. The first support frame (10) is fixedly installed on the side of the frame (1). A differential speed mechanism (11) is provided between the spiral blade roller (9) and the crushing roller (6) for transmission cooperation. The differential speed mechanism (11) makes the rotation speed of the crushing roller (6) higher than the rotation speed of the spiral blade roller (9). The differential speed mechanism (11) is stably installed on the first support frame (10). The bottom of the crushing and mixing cylinder (7) is connected to the discharge box (12). The discharge box (12) is used for the mixture of urea particles and potassium sulfate powder to flow out. The differential mechanism (11) includes a dial (1101), the inner surface of which is fastened to the outer end of the crushing roller (6). A shelf (1102) is fixedly installed on the first mounting frame (10). A first bearing seat (1103) is fixedly installed at the bottom of the top layer of the shelf (1102). A bearing rod (1104) is fitted inside the first bearing seat (1103). The bearing rod (1104) is arranged parallel to the crushing roller (6) and the spiral blade roller (9). A turntable (1105) is fastened to the periphery of the turntable (1104). A groove (1106) is provided on the turntable (1101). Multiple first shift posts (1107) are fixedly installed on the turntable (1105) and arranged at equal intervals. The first shift posts (1107) are distributed in a circumferential shape along the rod axis of the bearing rod (1104). Each first shift post (1107) is arranged parallel to the bearing rod (1104). The inner wall of the groove (1106) can slide in contact with the outer wall of the first shift post (1107). The turntable (1105) has a stepped structure, comprising a first stepped plate (110501) and a second stepped plate (110502). The first pivot (1107) is fixedly installed on the first stepped plate (110501), and multiple equally spaced second pivots (1108) are installed on the second stepped plate (110502). The second pivots (1108) are circumferentially distributed along the axis of the supporting rod (1104). The number of the first shift pins (1107) is the same as the number of the second shift pins (1108). A shift rod (1109) is fixedly installed on the outer surface of the dial (1101). The shift rod (1109) can make contact with the outer wall of the second shift pin (1108). The dial (1101) drives the turntable (1105) to rotate. Each first shift pin (1107) enters and exits the groove (1106) in sequence. When each first shift pin (1107) enters and exits the groove (1106), the dial (1101) rotates one revolution.

2. The dual-feeding-inlet water-soluble fertilizer crushing device according to claim 1, characterized in that, The urea granule feed inlet (3) is a vertical opening and is located on the side of the feed box (2). The potassium sulfate powder feed inlet (4) is a horizontal opening at an angle and is located on the top of the feed box (2). A partition plate (13) is fixedly installed inside the feed box (2). The urea granule feed inlet (3) and the potassium sulfate powder feed inlet (4) are respectively located on both sides of the partition plate (13). A cover plate (14) is installed on the urea granule feed inlet (3). A cover door (15) is installed on the potassium sulfate powder feed inlet (4). A handle (16) is provided on the cover door (15).

3. The dual-feeding-inlet water-soluble fertilizer crushing device according to claim 1, characterized in that, The crushing box (5) has a vertical plate (501) and an inclined plate (502) on its two sides. The vertical section of the crushing box (5) is a right trapezoid. The urea particle inlet (3) is arranged above the side near the vertical plate (501), and the potassium sulfate powder inlet (4) is arranged above the side near the inclined plate (502). The distance between the crushing roller (6) and the vertical plate (501) is smaller than the distance between the crushing roller (6) and the inclined plate (502).

4. The dual-feeding-port type water-soluble fertilizer crushing device according to claim 1, characterized in that, Multiple fin-shaped blades (17) are provided on the outer wall of the crushing roller (6), and the fin-shaped blades (17) are distributed in a circumferential shape along the roller axis of the crushing roller (6).

5. The dual-feeding-inlet water-soluble fertilizer crushing device according to claim 1, characterized in that, A second mounting bracket (18) is fixedly installed on the side of the platform (1). A variable frequency motor (19) is fixedly installed on the second mounting bracket (18). A first belt disc (20) is securely fitted around the output shaft of the variable frequency motor (19). A second belt disc (21) is securely fitted around the crushing roller (6). A belt (22) is fitted between the first belt disc (20) and the second belt disc (21).

6. The dual-feeding-port type water-soluble fertilizer crushing device according to claim 1, characterized in that, The bottom layer of the shelf (1102) is fixedly installed with a second bearing seat (1110). The outer front end of the spiral blade roller (9) is fitted inside the second bearing seat (1110). The outer periphery of the bearing rod (1104) is firmly fitted with a first chain disc (1111). The outer periphery of the front end of the spiral blade roller (9) is firmly fitted with a second chain disc (1112). A chain (1113) is fitted together between the first chain disc (1111) and the second chain disc (1112).

7. The dual-feeding-inlet water-soluble fertilizer crushing device according to claim 1, characterized in that, The crushing and mixing cylinder (7) is fixedly installed with a first inner cylinder (23) and a second inner cylinder (24). The first inner cylinder (23) is arranged on the outer periphery of the rear end of the spiral blade roller (9), and the second inner cylinder (24) is arranged on the outer periphery of the first inner cylinder (23). The bottom of the discharge box (12) is provided with a vertically arranged discharge cylinder (25). The first inner cylinder (23) and the second inner cylinder (24) are respectively provided with a first discharge area (26) and a second discharge area (27). The first discharge area (26) and the second discharge area (27) are arranged overlappingly and are both located on the side close to the crushing box (5).

8. A dual-feeding-port type water-soluble fertilizer crushing device according to claim 7, characterized in that, The area of ​​the second discharge zone (27) is larger than that of the first discharge zone (26). The first discharge zone (26) is provided with a plurality of uniformly arranged first discharge holes (28). The second discharge zone (27) is provided with a plurality of uniformly arranged second discharge holes (29). The diameter of the second discharge hole (29) is larger than that of the first discharge hole (28).

Images