Mixing kettle for processing compound fertilizer

By using magnetic coupling to drive the rotating shaft and creating a micro-negative pressure zone, the problem of toxic gas leakage caused by mechanical seal wear was solved, enabling stable, safe, and efficient production of the compound fertilizer processing kettle.

CN223760990UActive Publication Date: 2026-01-06ZHIDAN COUNTY LUOSHUIYAO AGRICULTURE & ANIMAL HUSBANDRY CO LTD
View PDF 0 Cites 0 Cited by

Patent Information

Application Number
CN202423184423.1
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-12-24
Publication Date
2026-01-06
Estimated Expiration
2034-12-24

AI Technical Summary

Technical Problem

The mechanical seals of existing compound fertilizer processing mixing kettles are worn, leading to toxic gas leakage, which increases maintenance costs and downtime, and affects production efficiency and equipment reliability.

Method used

The rotating shaft is driven by magnetic coupling. The magnetic force is transmitted through the vessel body by a magnet to drive the stirrer to rotate. Combined with the sealing gasket, sealing cover plate and baffle, a micro negative pressure zone is formed, avoiding the use of mechanical seals at the rotating shaft and reducing the leakage of toxic gases.

Benefits of technology

It effectively prevents toxic gas leaks, reduces equipment maintenance costs, shortens downtime, and ensures stable and safe production operations.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN223760990U_ABST
    Figure CN223760990U_ABST
Patent Text Reader

Abstract

The utility model relates to the technical field of production and processing equipment, and provides a mixing kettle for compound fertilizer processing, which comprises a kettle body, a motor I is arranged at the center of the top of the kettle body, a rotating shaft I is arranged on the motor I through an output shaft, and a plurality of magnetic irons I are fixedly connected to the bottom of the rotating shaft I; a second rotating shaft is movably embedded in the inner top of the kettle body, the top of the second rotating shaft is fixedly connected with a plurality of second magnetic irons, the outer surface of the second rotating shaft is fixedly connected with a stirrer, the kettle body is located in a micro-negative-pressure area, diffusion of toxic gas is reduced through cooperation of a sealing gasket, a sealing cover plate and a baffle, and then through the magnetic force coupling principle, the stirring effect is improved. The stirrer on the inner rotating shaft II is indirectly driven to rotate by magnetic force, so that a mechanical sealing element is prevented from being used at the rotating shaft II, the leakage of toxic gas is further prevented, the maintenance cost of equipment is reduced, the shutdown time is shortened, and a foundation is laid for stable, safe and economical operation.
Need to check novelty before this filing date? Find Prior Art

Description

Technical Field

[0001] This utility model relates to the field of production and processing equipment technology, and in particular to a mixing kettle for compound fertilizer processing. Background Technology

[0002] Compound fertilizers typically consist of multiple components, including nitrogen, phosphorus, potassium, and trace elements. A mixing tank ensures that these components are thoroughly and evenly mixed during the stirring process, forming homogeneous fertilizer granules.

[0003] The mixing vessel used for compound fertilizer processing contains toxic gases. However, the agitator shaft of the current reaction vessel is directly fixed to the output shaft of the external motor. Therefore, a mechanical seal is required between the shaft and the outer shell of the mixing vessel to prevent gas leakage.

[0004] However, prolonged rotation of the shaft will cause wear on the mechanical seal. Wear will lead to a decrease in sealing performance, resulting in the leakage of toxic gases. This necessitates the regular replacement of the seals, which in turn increases maintenance costs and downtime, affecting production efficiency and equipment reliability. Utility Model Content

[0005] In view of the shortcomings of the prior art, the purpose of this utility model is to provide a mixing kettle for compound fertilizer processing, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a mixing kettle for compound fertilizer processing, comprising: a kettle body, a motor 1 is provided at the top center of the kettle body, a rotating shaft 1 is provided through the output shaft of the motor 1, a plurality of magnets 1 are fixedly connected to the bottom of the rotating shaft 1, a rotating shaft 2 is movably embedded in the inner top of the kettle body, a plurality of magnets 2 are fixedly connected to the top of the rotating shaft 2, and a stirrer is fixedly connected to the outer surface of the rotating shaft 2.

[0007] The top of the vessel body is provided with a feed inlet, the inner surface of the feed inlet is provided with a sealing gasket, and the side of the vessel body near the feed inlet is provided with a sealing cover plate.

[0008] The bottom of the reactor body is fixedly connected to a feeding pipe, and a rotating shaft three is movably embedded in the inner surface of the feeding pipe. Multiple baffles are fixedly connected to the side of the rotating shaft three near the inside of the feeding pipe, which avoids the use of mechanical seals at the rotating shaft two, further prevents the leakage of toxic gases, reduces the maintenance cost of the equipment, and shortens the downtime.

[0009] In a preferred embodiment, multiple magnetic irons one and two are movably embedded inside the shell of the vessel body. The shell of the vessel body is made of 316 stainless steel, which is an austenitic stainless steel with a face-centered cubic lattice structure and is non-magnetic, thus not affecting the transmission of magnetic force.

[0010] In a preferred embodiment, the agitator is disposed on the inner surface of the vessel body, which can agitate the materials inside the vessel body.

[0011] In a preferred embodiment, a support frame is fixedly connected to the outer surface of the vessel body, and the support frame can support the vessel body.

[0012] In a preferred embodiment, a support plate is fixedly connected to the bottom of the motor, and the support plate is fixedly connected to the top of the vessel body, and the support plate can support the motor.

[0013] In a preferred embodiment, the output shaft of motor 2 is fixedly installed on the side of the rotating shaft 3 near the outside of the feeding tube. A support plate 2 is fixedly connected to the bottom of motor 2. The support plate 2 is fixedly connected to the outer surface of the feeding tube. The multiple baffles are flexible and fit against the inner wall of the feeding tube. The support plate 2 can support motor 2.

[0014] In a preferred embodiment, an exhaust pipe communicating with the inner cavity of the vessel is fixedly connected to the top of the vessel away from the sealing cover. The outlet of the exhaust pipe is connected to a waste gas purification system, which includes an induced draft fan, a waste gas purification device, and other equipment. The exhaust pipe is connected to the induced draft fan, so that the inside of the vessel is in a slightly negative pressure zone.

[0015] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0016] This invention places the vessel body in a slightly negative pressure zone, and with the help of sealing gaskets, sealing covers and baffles, reduces the diffusion of toxic gases. Then, through the principle of magnetic coupling, the agitator on the internal rotating shaft is indirectly driven by magnetic force, avoiding the use of mechanical seals at the rotating shaft, further preventing the leakage of toxic gases, reducing equipment maintenance costs, shortening downtime, and laying the foundation for stable, safe and economical operation. Attached Figure Description

[0017] Figure 1 A schematic diagram of the main structure of the mixing kettle for compound fertilizer processing provided by this utility model;

[0018] Figure 2 A schematic diagram of the internal structure of the mixing kettle for compound fertilizer processing provided by this utility model;

[0019] Figure 3The mixing kettle for compound fertilizer processing provided by this utility model Figure 2 Enlarged structural diagram at point A;

[0020] Figure 4 The mixing kettle for compound fertilizer processing provided by this utility model Figure 2 Enlarged structural diagram at point B;

[0021] Figure 5 The mixing kettle for compound fertilizer processing provided by this utility model Figure 2 A magnified structural diagram at point C.

[0022] Legend:

[0023] 1. Support frame; 2. Kettle body; 3. Motor 1; 4. Rotating shaft 1; 5. Magnet 1; 6. Rotating shaft 2; 7. Magnet 2; 8. Stirrer; 9. Support plate 1; 10. Exhaust pipe; 11. Feed inlet; 12. Sealing gasket; 13. Sealing cover plate; 14. Discharge pipe; 15. Support plate 2; 16. Motor 2; 17. Rotating shaft 3; 18. Baffle. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Please see Figure 1-5 This utility model provides a technical solution: a mixing kettle for compound fertilizer processing, comprising: a kettle body 2, a motor 3 is provided at the top center of the kettle body 2, a rotating shaft 4 is provided through the output shaft of the motor 3, a plurality of magnets 5 are fixedly connected to the bottom of the rotating shaft 4, a rotating shaft 6 is movably embedded in the inner top of the kettle body 2, a plurality of magnets 7 are fixedly connected to the top of the rotating shaft 6, and a stirrer 8 is fixedly connected to the outer surface of the rotating shaft 6.

[0026] The top of the vessel body 2 is provided with a feed inlet 11, and a sealing gasket 12 is provided on the inner surface of the feed inlet 11. A sealing cover plate 13 is provided on the side of the vessel body 2 near the feed inlet 11.

[0027] The bottom of the vessel body 2 is fixedly connected to a feed pipe 14. A rotating shaft 17 is movably embedded in the inner surface of the feed pipe 14. Multiple baffles 18 are fixedly connected to the side of the rotating shaft 17 near the inside of the feed pipe 14, which avoids the use of mechanical seals at the rotating shaft 6, further preventing the leakage of toxic gases, reducing equipment maintenance costs, shortening downtime, and laying the foundation for stable, safe and economical operation.

[0028] like Figure 1-5 As shown, multiple magnetic iron 5 and magnetic iron 7 are movably embedded inside the shell of the vessel body 2. The shell of the vessel body 2 is made of 316 stainless steel. 316 stainless steel is austenitic stainless steel with a face-centered cubic lattice structure. It does not have magnetism and therefore does not affect the transmission of magnetic force, thus creating conditions for magnetic iron 5 to drive magnetic iron 7 to rotate through the magnetic field.

[0029] like Figure 1-5 As shown, the stirrer 8 is set on the inner surface of the vessel body 2, which can stir the materials inside the vessel body 2 to make the materials mix evenly.

[0030] like Figure 1-5 As shown, a support frame 1 is fixedly connected to the outer surface of the vessel body 2. The support frame 1 can support the vessel body 2 and provide a good working environment for the vessel body 2.

[0031] like Figure 1-5 As shown, a support plate 9 is fixedly connected to the bottom of motor 3. The support plate 9 is fixedly connected to the top of the vessel body 2. The support plate 9 can support motor 3 and provide a good working environment for motor 3.

[0032] like Figure 1-5 As shown, the output shaft of motor 2 16 is fixedly installed on the side of the rotating shaft 3 17 near the outside of the feed tube 14. The bottom of motor 2 16 is fixedly connected to support plate 2 15. Support plate 2 15 is fixedly connected to the outer surface of feed tube 14. Multiple baffles 18 are flexible and fit against the inner wall of feed tube 14. Support plate 2 15 can support motor 2 16 and provide a good working environment for motor 2 16.

[0033] like Figure 1-5 As shown, an exhaust pipe 10 is fixedly connected to the top of the vessel body 2 on the side away from the sealing cover plate 13, which communicates with its inner cavity. The outlet of the exhaust pipe 10 is connected to the exhaust gas purification system, which includes equipment such as an induced draft fan and an exhaust gas purification device. The exhaust pipe 10 is connected to the induced draft fan, so that the inside of the vessel body 2 is in a slightly negative pressure zone, which reduces the diffusion of toxic gases.

[0034] Working principle: This equipment is a mixing kettle for compound fertilizer processing. The sealing gasket 12 can ensure the sealing of the feed inlet 11.

[0035] When in use, open the sealing cover 13, introduce the raw material into the vessel body 2 on the support frame 1, and then start the induced draft fan in the exhaust gas purification system. Use the exhaust pipe 10 to create a slight negative pressure zone in the vessel body 2, and absorb the toxic gas inside the vessel body 2 into the exhaust gas purification device, and use the exhaust gas purification device to purify the toxic gas.

[0036] Then, the motor 3 on the support plate 9 is started. The motor 3 drives the rotating shaft 4 to rotate through the output shaft. The rotating shaft 4 causes the magnetic field to rotate through the magnet 5. The magnetic field drives the rotating shaft 6 to rotate through the magnet 7. The rotating shaft 6 stirs and mixes the raw materials inside the vessel 2 through the stirrer 8.

[0037] Once the mixture is homogeneous, start the motor 16 on the support plate 2 15. The motor 16 drives the baffle 18 to rotate through the shaft 3 17. Because the baffle 18 is in contact with the inner wall of the feed pipe 14, the diffusion of toxic gas inside the vessel 2 can be restricted to a certain extent during the rotation of the baffle 18, and the feeding function can be realized.

[0038] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the present utility model.

Claims

1. A mixing kettle for compound fertilizer processing, comprising: The utility model provides a kind of kettle body (2), it is characterized by: the top center of the kettle body (2) is provided with motor one (3), the motor one (3) is provided with rotating shaft one (4) by output shaft, the bottom of the rotating shaft one (4) is fixedly connected with multiple magnetic iron one (5), the inner top of the kettle body (2) is movably embedded with rotating shaft two (6), the top of the rotating shaft two (6) is fixedly connected with multiple magnetic iron two (7), the outer surface of the rotating shaft two (6) is fixedly connected with stirrer (8); The top of the kettle body (2) is provided with feed inlet (11), the inner surface of the feed inlet (11) is provided with sealing gasket (12), the side of the kettle body (2) close to the feed inlet (11) is provided with sealing cover plate (13); The bottom of the kettle body (2) is fixedly connected with discharge pipe (14), the inner surface of the discharge pipe (14) is movably embedded with rotating shaft three (17), the side of the rotating shaft three (17) close to the inside of the discharge pipe (14) is fixedly connected with multiple baffle (18).

2. The compound fertilizer processing mixing kettle according to claim 1, characterized in that: Multiple magnetic iron one (5) and magnetic iron two (7) are movably embedded in the shell of the kettle body (2), and the shell material of the kettle body (2) is 316 stainless steel.

3. The mixing kettle for compound fertilizer processing according to claim 1, characterized in that: The stirrer (8) is arranged on the inner surface of the kettle body (2), and the material in the kettle body (2) can be stirred.

4. The compound fertilizer processing mixing kettle according to claim 1, characterized in that: The outer surface of the kettle body (2) is fixedly connected with support frame (1), and the support frame (1) can support the kettle body (2).

5. The compound fertilizer processing mixing kettle according to claim 1, characterized in that: The bottom of the motor one (3) is fixedly connected with support plate one (9), and the support plate one (9) is fixedly connected to the top of the kettle body (2).

6. The compound fertilizer processing mixing kettle according to claim 1, characterized in that: The output shaft of the motor two (16) is fixedly installed on the side of the rotating shaft three (17) close to the outside of the discharge pipe (14), the bottom of the motor two (16) is fixedly connected with support plate two (15), the support plate two (15) is fixedly connected to the outer surface of the discharge pipe (14), and multiple baffle (18) has tenacity and is attached to the inner wall of the discharge pipe (14).

7. The mixing kettle for compound fertilizer processing according to claim 1, characterized in that: The top of the kettle body (2) is fixedly connected with exhaust pipe (10) communicated with its inner cavity on the side away from the sealing cover plate (13), the outlet of the exhaust pipe (10) is connected with waste gas purification system, and the waste gas purification system comprises an induced draft fan and a waste gas purification device.