Rotary coating kettle for coating fertilizer with anti-wall sticking

Abstract

The utility model relates to a kind of anti-sticking wall's coating fertilizer rotary coating kettle, belong to chemical fertilizer production technical field.The anti-sticking wall's coating fertilizer rotary coating kettle, comprising: shell, the inner wall of the shell is equipped with kettle body, the top of the kettle body is equipped with head, the inner wall of the kettle body is provided with anti-sticking wall mechanism;Rotary shaft can drive cleaning ring to rotate through the recess of outer wall, improve the cleaning effect of cleaning ring to the material sticking on kettle wall, screw rod and cleaning ring are matched and can drive cleaning ring to reciprocate up and down along the recess on rotary shaft, can be overall effective to the material sticking in the kettle wall Scrape, the scraping ring of cleaning ring outer wall can be attached to kettle wall by the support of compression spring, telescopic link can support and guide scraping ring and compression spring, cleaning ring moves and moves along the outer wall of two guide rods, can scrape the material sticking in coating kettle, prevent scale formation, improve the anti-sticking wall effect of coating kettle.

Description

Technical Field

[0001] This utility model relates to the field of fertilizer production technology, and in particular to a rotary coating kettle for preventing fertilizer from sticking to the wall. Background Technology

[0002] Chemical fertilizers are fertilizers made through chemical methods or industrial production processes. They contain one or more nutrients required for plant growth and play a crucial role in the high-yield and high-efficiency development of modern agriculture. Chemical fertilizers, or simply fertilizers, require a coating process during production, where fertilizer granules are coated in a coating autoclave. As shown in the reference case "A High-Temperature Coating Kettle" (publication number CN206139190U), the double-spiral agitator formed by the combination of inner and outer spirals ensures that during clockwise stirring, the material moves in a direction that, viewed from above the motor, lifts the outer material upwards while the middle material moves downwards. Simultaneously, the motor and heating furnace control the temperature. The double-spiral structure reduces the amount of material adhering to the inner ring, and the upper end scraper assembly and outer scraper structure further reduce the amount of material adhering to the inner wall, thus ensuring the temperature of the inner cavity of the kettle body. In summary, after the material is fed into the kettle, coating and carbonization can be completed simultaneously. Furthermore, the reduced material adhering to the inner wall and the rapid material discharge speed allow for one-time forming of the material, improving production efficiency.

[0003] According to the above reference materials, in the above device, the sleeve of the upper end cap scraper assembly is tightly fitted onto the corresponding upper position of the stirring shaft. The scraper of the upper end cap scraper assembly is arranged along the shape of the inner wall of the upper feed position. A double spiral agitator is fixedly installed in the middle and lower part of the stirring shaft. The inner spiral corresponding to the middle cylindrical stirring position is provided with spaced push plates along the spiral direction. The push plates push the adhered powder, strengthen the powder movement intensity, and at the same time play a role in strengthening the strength. However, when this device is used for coating high humidity or easily adhered materials, the high humidity or easily adhered materials are prone to scaling on the vessel wall. The distance between the outer scraper and the lower scraper and the inner wall of the coating vessel makes the scraping effect of the scraper on the vessel wall less than ideal, which is inconvenient to effectively scrape the scale on the coating vessel wall and reduces the use effect of the coating vessel. Utility Model Content

[0004] Therefore, it is necessary to provide a rotary coating kettle for fertilizer coating that prevents scale from sticking to the wall, in order to address the problem of inconvenience in effectively scraping off scale on the coating kettle wall.

[0005] The device includes an outer shell, an inner wall of which is fitted with a vessel body, a top end cap of which is fitted with a cap, and an anti-sticking mechanism on the inner wall of the vessel body. The anti-sticking mechanism includes a rotating shaft rotatably connected to the inner wall of the vessel body, a cleaning ring slidably connected to the inner wall of the vessel body, a groove on the outer wall of the rotating shaft slidably connected at the center of the inner wall of the cleaning ring, several evenly arranged scraper rings slidably connected to the inner wall of the cleaning ring, one side of each scraper ring extending through to the outer wall of the cleaning ring, and several evenly arranged telescopic rods fixedly connected between the other side of each scraper ring and the cleaning ring, with compression springs fitted onto the outer walls of the telescopic rods. A cleaning assembly is also provided on the inner wall of the vessel body.

[0006] In one embodiment, the anti-sticking mechanism further includes a lead screw rotatably connected to the inner wall of the shaft, the lead screw being threadedly connected to the inner wall of the cleaning ring.

[0007] In one embodiment, a servo motor is mounted on the top of the inner wall of the rotating shaft, and the output shaft of one end of the servo motor is fixedly connected to the lead screw.

[0008] In one embodiment, two guide rods are fixedly connected to the inner wall of the rotating shaft, and the cleaning ring is slidably connected to the outer wall of the guide rods. The two guide rods are respectively disposed on both sides of the lead screw.

[0009] In one embodiment, protective sleeves are fixedly connected to both ends of the cleaning ring and the rotating shaft.

[0010] In one embodiment, both the lead screw and the guide rod are disposed on the inner wall of the protective sleeve.

[0011] In one embodiment, the cleaning assembly includes a plurality of agitators evenly arranged and fixedly connected to the outer wall of the rotating shaft, and a scraper is fixedly connected to the bottom end of the rotating shaft.

[0012] In one embodiment, the inner wall of the housing is fitted with several heating rods arranged in a uniform manner.

[0013] Beneficial effects 1. The aforementioned anti-sticking rotary coating kettle for fertilizer has a rotating shaft that drives a cleaning ring to rotate via a groove on its outer wall, improving the cleaning effect of the cleaning ring on the kettle wall. A servo motor drives a lead screw that works in conjunction with the cleaning ring to move the cleaning ring up and down along the groove on the rotating shaft, effectively scraping away all adhering materials inside the kettle wall. The scraper ring on the outer wall of the cleaning ring, supported by a compression spring, fits snugly against the kettle wall, enhancing the scraping effect. A telescopic rod supports and guides the scraper ring and the compression spring. The cleaning ring moves along the outer wall of two guide rods, improving its stability. Protective sleeves at both ends of the cleaning ring retract and expand as it moves, protecting the guide rods and lead screw. Both the cleaning ring and the scraper ring are made of thermoplastic polyurethane and undergo fluorination treatment, improving the high-temperature resistance of the components, reducing material adhesion, and effectively scraping away adhering materials inside the coating kettle to prevent scaling and improve the anti-sticking effect of the coating kettle. 2. When the rotating shaft rotates, it can drive multiple stirring plates to rotate, stirring the fertilizer granules and improving the coating effect. The bottom of the scraper is in contact with the bottom of the kettle wall. The rotating shaft can also drive the scraper to rotate and scrape off the material adhering to the bottom of the kettle wall. Multiple heating rods between the outer shell and the kettle body can heat the fertilizer granules and coating material, keeping the coating kettle at the optimal coating temperature, reducing the adhesion of the coating kettle wall, and uniformly coating the fertilizer granules. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in this utility model 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 some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the external structure of this utility model; Figure 2 This is a schematic diagram of the anti-sticking mechanism of this utility model; Figure 3 This is a partial structural diagram of the anti-adhesion mechanism of this utility model; Figure 4 This is a half-sectional structural diagram of the anti-adhesion mechanism of this utility model; Figure 5 This is a schematic diagram of the cleaning component structure of this utility model.

[0016] Figure label: 100. Outer shell; 200. Vessel body; 300. End cap; 400. Anti-sticking mechanism; 410. Rotating shaft; 420. Cleaning ring; 430. Scraper ring; 440. Telescopic rod; 450. Compression spring; 460. Lead screw; 461. Servo motor; 462. Guide rod; 463. Protective sleeve; 470. Cleaning assembly; 471. Stirring plate; 472. Scraper; 473. Heating rod. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0018] The following is combined with Figure 1 - Figure 5 This invention describes a rotary coating autoclave for preventing fertilizer from sticking to the wall.

[0019] In one embodiment, a rotary coating vessel for anti-sticking fertilizer includes an outer shell 100, a vessel body 200 mounted on the inner wall of the outer shell 100, a cap 300 mounted on the top of the vessel body 200, and an anti-sticking mechanism 400 provided on the inner wall of the vessel body 200. The anti-sticking mechanism 400 includes a rotating shaft 410 rotatably connected to the inner wall of the vessel body 200, a cleaning ring 420 slidably connected to the inner wall of the vessel body 200, a groove on the outer wall of the rotating shaft 410 slidably connected at the center of the inner wall of the cleaning ring 420, a plurality of evenly arranged scraping rings 430 slidably connected to the inner wall of the cleaning ring 420, one side of the scraping ring 430 extending to the outer wall of the cleaning ring 420, and a plurality of evenly arranged telescopic rods 440 fixedly connected between the other side of the scraping ring 430 and the cleaning ring 420, a compression spring 450 sleeved on the outer wall of the telescopic rod 440, and a cleaning assembly 470 provided on the inner wall of the vessel body 200.

[0020] It should be noted that the coating reactor with model number "DMS 1000L" consists of a cylindrical body, a stirring device, and a transmission component; Sealing structure: A three-layer sealing design is adopted, including a full-circle graphite ring, a first and second graphite ring group, a polytetrafluoroethylene ring group, and a PTFE skeleton. When the rotating shaft 410 passes through the sealing structure, the components form a tight fit to prevent air and powder leakage.

[0021] Transmission device: The motor reduces its speed through a reducer and then drives the stirring shaft to rotate via a coupling.

[0022] Mixing components: The agitator achieves efficient mixing by circulating and propelling the materials.

[0023] Spraying component: Used to apply coating agent to achieve uniform coating on particle surface.

[0024] Heating components: Some models are equipped with a heating jacket, which can adjust the temperature through steam, electric heating, etc.

[0025] When coating fertilizer granules, the anti-sticking mechanism 400, through multiple scraping rings 430 on the outer wall of the cleaning ring 420, can adhere to the inner wall of the vessel body 200, scraping off the material adhering to the inner wall of the vessel body 200. The cleaning ring 420, through the lead screw 460, can move up and down along the inner wall of the vessel body 200 to clean the material adhering to the vessel wall. The cleaning component 470, through the cooperation of the stirring plate 471 and the scraper 472, can effectively coat the fertilizer granules and scrape off the material adhering to the bottom of the vessel wall. The anti-sticking mechanism 400 and the cleaning component 470 work together to optimize the anti-sticking effect of the coating vessel and will not affect the normal use of the coating vessel.

[0026] like Figure 2 , Figure 3 and Figure 4 As shown, the anti-sticking mechanism 400 also includes a lead screw 460 rotatably connected to the inner wall of the rotating shaft 410. The lead screw 460 is threadedly connected to the inner wall of the cleaning ring 420. A servo motor 461 is installed at the top of the inner wall of the rotating shaft 410. The output shaft of one end of the servo motor 461 is fixedly connected to the lead screw 460. Two guide rods 462 are fixedly connected to the inner wall of the rotating shaft 410. The cleaning ring 420 is slidably connected to the outer wall of the guide rods 462. The two guide rods 462 are respectively set on both sides of the lead screw 460. Protective sleeves 463 are fixedly connected between both ends of the cleaning ring 420 and the rotating shaft 410. The lead screw 460 and the guide rods 462 are both set on the inner wall of the protective sleeves 463.

[0027] In this embodiment, when the rotating shaft 410 rotates, it can drive the cleaning ring 420 to scrape off the material adhering to the inner wall of the vessel via the scraper ring 430. The cleaning ring 420 moves to one side and fits against the vessel wall via multiple compression springs 450. The telescopic rod 440 can support the scraper ring 430 and the compression springs 450. The servo motor 461 drives the lead screw 460, which is threadedly connected to the cleaning ring 420, to drive the scraper ring 430 on the cleaning ring 420 to scrape off the material adhering to the inner wall of the vessel. The two guide rods 462 can support the cleaning ring 420. The protective sleeve 463 can extend and retract with the cleaning ring 420, which can effectively scrape off the material adhering to the inner wall of the vessel and improve the anti-sticking effect of the vessel.

[0028] like Figure 5As shown, the cleaning assembly 470 includes several uniformly arranged stirring plates 471 fixedly connected to the outer wall of the rotating shaft 410, a scraper 472 fixedly connected to the bottom end of the rotating shaft 410, and several uniformly arranged heating rods 473 installed on the inner wall of the outer casing 100.

[0029] In this embodiment, when coating fertilizer granules, the motor at the top of the end cap 300 drives the rotating shaft 410 to rotate. The rotating shaft 410 drives multiple stirring plates 471 to rotate, which can stir the fertilizer granules and make the coating material evenly adhere to the fertilizer granules. The scraper 472 at the bottom of the rotating shaft 410 can scrape off the material adhering to the bottom of the reactor wall. The heating rod 473 can heat the fertilizer granules after being energized, which can evenly coat the fertilizer granules and reduce the phenomenon of material sticking to the wall.

[0030] Working principle: When coating fertilizer granules, the motor at the top of the end cap 300 drives multiple stirring plates 471 and cleaning ring 420 on the rotating shaft 410 to rotate via a coupling. The telescopic rod 440 supports the scraper ring 430 via a compression spring 450, making the scraper ring 430 fit against the reactor wall. The controller drives the servo motor 461 to drive the lead screw 460 to connect with the cleaning ring 420, causing the cleaning ring 420 to slide up and down along the two guide rods 462, which can scrape off the material adhering to the reactor wall. The two protective sleeves 463 can extend and retract with the movement of the cleaning ring 420. When the rotating shaft 410 rotates, it drives the scraper 472 to rotate along the bottom of the reactor wall to scrape off the adhering material. The stirring plates 471 can uniformly stir the fertilizer granules. The controller drives multiple heating rods 473 inside the outer shell 100 to be energized and heated, which can uniformly heat the fertilizer granules inside the reactor body 200.

[0031] It should be noted that the servo motor 461 and heating rod 473 mentioned above are all devices with relatively mature existing technology. The specific model can be selected according to actual needs. At the same time, the servo motor 461 and heating rod 473 can be powered by the built-in power supply or by AC power. The specific power supply method should be selected according to the situation, which will not be elaborated here.

[0032] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A rotary coating reactor for preventing fertilizer sticking to the wall, characterized in that, include: The outer shell (100) has a vessel body (200) installed on its inner wall, a cap (300) installed on the top of the vessel body (200), and an anti-sticking mechanism (400) provided on the inner wall of the vessel body (200). The anti-sticking mechanism (400) includes a rotating shaft (410) rotatably connected to the inner wall of the vessel body (200). A cleaning ring (420) is slidably connected to the inner wall of the vessel body (200). The center of the inner wall of the cleaning ring (420) is slidably connected to a groove on the outer wall of the rotating shaft (410). Several uniformly arranged scraping rings (430) are slidably connected to the inner wall of the cleaning ring (420). One side of the scraping ring (430) extends through to the outer wall of the cleaning ring (420). Several uniformly arranged telescopic rods (440) are fixedly connected between the other side of the scraping ring (430) and the cleaning ring (420). A compression spring (450) is sleeved on the outer wall of the telescopic rod (440). A cleaning assembly (470) is provided on the inner wall of the vessel body (200).

2. The rotary coating reactor for anti-sticking fertilizer as described in claim 1, characterized in that, The anti-sticking mechanism (400) further includes a lead screw (460) rotatably connected to the inner wall of the rotating shaft (410), and the lead screw (460) is threadedly connected to the inner wall of the cleaning ring (420).

3. The rotary coating kettle for anti-sticking fertilizer as described in claim 2, characterized in that, A servo motor (461) is installed at the top of the inner wall of the rotating shaft (410), and the output shaft of one end of the servo motor (461) is fixedly connected to the lead screw (460).

4. The rotary coating reactor for anti-sticking fertilizer as described in claim 2, characterized in that, Two guide rods (462) are fixedly connected to the inner wall of the rotating shaft (410), and the cleaning ring (420) is slidably connected to the outer wall of the guide rods (462). The two guide rods (462) are respectively set on both sides of the lead screw (460).

5. The rotary coating reactor for anti-sticking fertilizer according to claim 1, characterized in that, Protective sleeves (463) are fixedly connected to both ends of the cleaning ring (420) and the rotating shaft (410).

6. The rotary coating reactor for anti-sticking fertilizer according to claim 2, characterized in that, The lead screw (460) and guide rod (462) are both located on the inner wall of the protective sleeve (463).

7. The rotary coating reactor for anti-sticking fertilizer according to claim 1, characterized in that, The cleaning assembly (470) includes several stirring plates (471) that are evenly arranged and fixedly connected to the outer wall of the rotating shaft (410), and a scraper (472) is fixedly connected to the bottom end of the rotating shaft (410).

8. The rotary coating reactor for anti-sticking fertilizer according to claim 1, characterized in that, The inner wall of the outer casing (100) is fitted with several evenly arranged heating rods (473).

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