Aqueous fertilizer production kettle capable of improving reaction efficiency

By introducing a lifting unit and a stirring device into the aqueous fertilizer production reactor, combined with a jacketed cooling and steam heating system, the problems of poor sealing performance and low reaction efficiency of the existing reactor body have been solved, and a high-efficiency reaction for large-scale production has been achieved.

CN224208024UActive Publication Date: 2026-05-08SHIFANG CHANGFENG CHEM CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
SHIFANG CHANGFENG CHEM CO LTD
Filing Date
2025-05-21
Publication Date
2026-05-08

AI Technical Summary

Technical Problem

Existing liquid fertilizer production reactors are suitable for small-scale production, but have small feed amounts, poor sealing performance, and low reaction efficiency.

Method used

A liquid fertilizer production vessel was designed, comprising a vessel body, a stirring device, a lifting unit, and various sensors. It employs a spiral lifting impeller and multiple sets of stirring blades, combined with a jacketed cooling and steam heating system, to achieve uniform mixing of materials and temperature control. It is equipped with automated control valves and sensors to improve reaction efficiency.

Benefits of technology

The improved design enhances the uniformity and sealing performance of the reactants, thereby increasing reaction efficiency and making it suitable for large-scale production.

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Abstract

The utility model discloses an aqueous fertilizer production kettle capable of improving reaction efficiency, which belongs to the field of aqueous fertilizer production and comprises a kettle body and a stirring device, the stirring device comprises a driving motor, a stirring shaft and a stirring unit, the driving motor is mounted outside the kettle body, the stirring unit is mounted in a production cavity formed by the kettle body, the stirring unit is mounted on the stirring shaft, and the stirring shaft is mounted on the stirring shaft. The upper end of the stirring shaft penetrates out of the kettle body and is connected with a driving motor, a discharging pipe is connected to the bottom of the kettle body, a feeding opening is formed in the top of the kettle body, and an acid supply pipe, a liquid alkali supply pipe and a raw water pipe are further connected to the top of the kettle body; and the vertical center line of the stirring shaft is used as a center line. According to the utility model, the reaction efficiency can be improved.
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Description

Technical Field

[0001] This utility model relates to the production of aqueous fertilizers, and more specifically, to an aqueous fertilizer production vessel for improving reaction efficiency. Background Technology

[0002] The aqueous fertilizer production vessel is the core equipment for aqueous fertilizer production. Existing aqueous fertilizer production vessels, such as the reaction vessel disclosed in CN218107666U, can also be used for aqueous fertilizer production, but they are only suitable for small-scale production, with small feed volume, poor sealing performance, and low reaction efficiency. Utility Model Content

[0003] To address the aforementioned problems, this utility model provides a liquid fertilizer production vessel with improved reaction efficiency, which aims to improve at least one of the problems mentioned in the background art.

[0004] A liquid fertilizer production vessel for improving reaction efficiency includes a vessel body and a stirring device. The stirring device includes a drive motor, a stirring shaft, and a stirring unit. The drive motor is installed outside the vessel body, and the stirring unit is installed inside the production chamber formed by the vessel body. The stirring unit is mounted on the stirring shaft, the upper end of which extends out of the vessel body and is connected to the drive motor. A discharge pipe is connected to the bottom of the vessel body, and a feeding port is provided at the top of the vessel body. An acid supply pipe, a liquid alkali supply pipe, and a raw water pipe are also connected to the top of the vessel body. The liquid fertilizer production vessel for improving reaction efficiency also includes a lifting unit located inside the vessel body and installed with the vertical center line of the stirring shaft as the center line.

[0005] Optionally, the lifting unit is a spiral lifting blade.

[0006] Optionally, the stirring unit includes two sets of paddle-type stirring blades, with the first set of paddle-type stirring blades installed at the bottom of the stirring shaft and the second set of paddle-type stirring blades installed in the upper middle part of the stirring shaft.

[0007] Optionally, the aqueous fertilizer production vessel for improving reaction efficiency also includes a jacket integrally formed with the vessel body, with a cooling water drain pipe connected to the upper part of the jacket and a cooling water drain pipe and a cooling water supply pipe connected to the bottom of the jacket respectively.

[0008] Optionally, a cooling water drain solenoid valve is installed on the cooling water drain pipe, a cooling water vent solenoid valve is installed on the cooling water vent pipe, and a cooling water supply solenoid valve is installed on the cooling water supply pipe.

[0009] Optionally, a weighing bracket is connected to the outer wall of the jacket, and a weighing sensor is connected to the lower surface of the weighing bracket.

[0010] Optionally, the vessel body is connected to a first steam pipe, and a steam coil system is provided on the inner wall of the vessel body. The steam coil system is connected to a second steam pipe. A first steam electric regulating valve is installed on the first steam pipe, and a second steam electric regulating valve is installed on the second steam pipe.

[0011] Optionally, the vessel body is respectively equipped with a vessel internal medium temperature sensor, a vessel internal medium density sensor, and a vessel internal medium pH sensor.

[0012] Optionally, a discharge solenoid valve is installed on the discharge pipe, an acid supply electric regulating valve is installed on the acid supply pipe, a liquid alkali electric regulating valve is installed on the liquid alkali supply pipe, a raw water electric regulating valve is installed on the raw water pipe, and a return pipe is also connected to the top of the reactor body, with a return electric regulating valve installed on the return pipe.

[0013] Optionally, a detachable safety grating is installed inside the production chamber, which is installed 5 to 10 cm below the feeding port.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] The aqueous fertilizer production kettle provided by this utility model improves reaction efficiency by enhancing the homogenization of the reactants. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application 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 application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0018] Explanation of reference numerals in the attached drawings: 1. Reactor body; 2. Jacket; 3. Drive motor; 4. Stirring shaft; 5. Stirring unit; 6. Discharge pipe; 7. Feed port; 8. Acid supply pipe; 9. Liquid alkali supply pipe; 10. Raw water pipe; 11. Return pipe; 12. Lifting unit; 13. Sampling pipe; 14. Detachable safety grating; 15. Cooling water drain pipe; 16. Cooling water vent pipe; 17. Cooling water supply pipe; 18. Steam coil system; 19. First steam pipe; 20. Second steam pipe; 21. Drain pipe; 22. Reactor internal medium temperature sensor; 23. Reactor internal medium density sensor; 24. Reactor internal medium pH sensor; 25. Weighing bracket; 26. Weighing sensor; 27. Pneumatic opening and closing cover. Detailed Implementation

[0019] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, an indirect connection through an intermediate medium, or the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0020] In the description of this utility model, it should be understood that the terms "upper," "lower," "front," "rear," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. In the description of this utility model, "a plurality of" means two or more, unless otherwise precisely specified.

[0021] The terms “first,” “second,” “third,” “fourth,” etc. (if present) in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a particular order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented, for example, in orders other than those illustrated or described herein. Furthermore, the terms “comprising” and “having,” and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0022] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0023] The technical solution of this utility model will be described in detail below with specific embodiments. These specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described again in some embodiments.

[0024] Please refer to Figure 1 , Figure 1This is a schematic diagram of the overall structure of this utility model.

[0025] A liquid fertilizer production vessel for improving reaction efficiency includes a vessel body 1 and a stirring device. The stirring device includes a drive motor 3, a stirring shaft 4, and a stirring unit 5. The drive motor 3 is installed outside the vessel body 1, and the stirring unit 5 is installed inside the production chamber formed by the vessel body 1. The stirring unit 5 is installed on the stirring shaft 4, and the upper end of the stirring shaft 4 extends out of the vessel body 1 and is connected to the drive motor 3. A discharge pipe 6 is connected to the bottom of the vessel body 1, and a feeding port 7 is provided at the top of the vessel body 1. An acid supply pipe 8, a liquid alkali supply pipe 9, and a raw water pipe 10 are also connected to the top of the vessel body 1. The liquid fertilizer production vessel for improving reaction efficiency also includes a lifting unit 12, which is located inside the vessel body 1 and installed with the vertical center line of the stirring shaft 4 as the center line.

[0026] In one or more embodiments of this utility model, the lifting unit 12 is a spiral lifting blade.

[0027] In one or more embodiments of this utility model, the stirring unit 5 includes two sets of paddle stirring blades. The first set of paddle stirring blades is installed at the bottom of the stirring shaft 4, and the second set of paddle stirring blades is installed in the upper part of the stirring shaft 4.

[0028] In one or more embodiments of this utility model, the aqueous fertilizer production vessel for improving reaction efficiency further includes a jacket 2 integrally formed with the vessel body 1. The upper part of the jacket 2 is connected to a cooling water drain pipe 15, and the bottom of the jacket 2 is connected to a cooling water drain pipe 16 and a cooling water supply pipe 17, respectively.

[0029] In one or more embodiments of this utility model, in order to facilitate automated control, a cooling water drain solenoid valve is installed on the cooling water drain pipe 15, a cooling water drain solenoid valve is installed on the cooling water drain pipe 16, and a cooling water supply solenoid valve is installed on the cooling water supply pipe 17.

[0030] In one or more embodiments of this utility model, in order to facilitate automated control, a discharge solenoid valve is installed on the discharge pipe 6, an acid supply electric regulating valve is installed on the acid supply pipe 8, a liquid alkali supply electric regulating valve is installed on the liquid alkali supply pipe 9, and a raw water electric regulating valve is installed on the raw water pipe 10.

[0031] In one or more embodiments of this utility model, in order to reduce costs and increase the final reaction yield, a return pipe 11 is also connected to the top of the reactor body 1.

[0032] In one or more embodiments of this utility model, an electric regulating valve for returning material is installed on the return pipe 11 to facilitate automated control of the return material.

[0033] In one or more embodiments of this utility model, in order to facilitate sampling, a sampling tube 13 is connected to the discharge pipe 6, and a sampling manual valve is installed on the sampling tube 13.

[0034] In one or more embodiments of this utility model, in order to make the reactants in the vessel body 1 reach the reaction temperature, a first steam pipe 19 is connected to the vessel body 1.

[0035] In one or more embodiments of this utility model, in order to make the reactants in the vessel body 1 reach the reaction temperature, a steam coil system 18 is provided on the inner wall of the vessel body 1, and the steam coil system 18 is connected to a second steam pipe 20.

[0036] In one or more embodiments of this utility model, in order to facilitate automated control of material return, a first steam electric regulating valve is installed on the first steam pipe 19, and a second steam electric regulating valve is installed on the second steam pipe 20.

[0037] In one or more embodiments of this utility model, in order for the steam coil system 18 to operate normally, the steam coil system 18 is also connected to a drain pipe 21, and a drain valve is installed on the drain pipe 21.

[0038] In one or more embodiments of this utility model, in order to monitor the reaction state inside the reactor in real time, a reactor medium temperature sensor 22, a reactor medium density sensor 23, and a reactor medium pH sensor 24 are respectively installed inside the reactor body 1.

[0039] In one or more embodiments of this utility model, in order to monitor the weight change of the material in the reactor in real time, a weighing bracket 25 is connected to the outer wall of the jacket 2, and a weighing sensor 26 is connected to the lower surface of the weighing bracket 25. During operation, the weighing bracket 25 is placed on the platform, and the operator can monitor the weight change of the reactor 1 at any time through the weighing sensor 26, which facilitates precise control of the reaction.

[0040] In one or more embodiments of this utility model, in order to increase the feeding amount and improve the sealing performance after feeding, the feeding port 7 is relatively large, and a sealable pneumatic opening and closing cover 27 is installed on the feeding port 7. Those skilled in the art should understand that when the pneumatic opening and closing cover 27 is closed, the technology of sealing the pneumatic opening and closing cover 27 with the vessel body 1 is prior art in this field. The pneumatic opening and closing cover 27 and the vessel body 1 can be connected by friction sealing or by other sealing methods, which are not specifically specified in this application. The opening and closing of the pneumatic opening and closing cover 27 can be the same as the machine cover opening and closing method in CN219024161U, or other pneumatic opening and closing methods can be used, which are not specifically specified in this application.

[0041] In one or more embodiments of this utility model, in order to improve safety, a detachable safety grating 14 is installed inside the production chamber. The detachable safety grating 14 is installed 5 to 10 cm below the feeding port 7. The detachable safety grating 14 prevents people from falling into the production chamber or the feeding bag from falling into the production chamber. The detachable safety grating 14 can be removed to form a manhole, which is convenient for maintenance and repair.

[0042] In this invention, the pneumatically operated opening and closing cover 27 greatly reduces the noise emitted by the stirring device after it is closed.

[0043] In this invention, when cooling is required after the reaction is complete, the cooling circulating water is turned on, and the temperature drops quickly.

[0044] In this invention, when the reaction requires heating, the second steam electric regulating valve is opened to heat exchange the material in the reactor with a steam coil. When the added water can submerge the steam pipe inlet, the first steam electric regulating valve is opened. When the amount of steam introduced reaches the required level, the first steam electric regulating valve is closed. If the temperature has not yet reached the required level, the second steam electric regulating valve continues to heat the coil. When the temperature reaches the required level, the second steam electric regulating valve is closed.

[0045] In this invention, the lifting unit 12 and two sets of paddle-type stirring blades are used to lift the material from the bottom. The lifting unit 12 lifts the material from the bottom and the two sets of paddle-type stirring blades can better mix the material evenly during stirring, thereby improving the reaction efficiency.

[0046] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the 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 or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A liquid fertilizer production vessel with improved reaction efficiency, comprising a vessel body (1) and a stirring device, the stirring device comprising a drive motor (3), a stirring shaft (4) and a stirring unit (5), the drive motor (3) being installed outside the vessel body (1), the stirring unit (5) being installed inside the production chamber formed by the vessel body (1), the stirring unit (5) being installed on the stirring shaft (4), the upper end of the stirring shaft (4) extending out of the vessel body (1) and connected to the drive motor (3), a discharge pipe (6) being connected to the bottom of the vessel body (1), a feeding port (7) being provided at the top of the vessel body (1), and an acid supply pipe (8), a liquid alkali supply pipe (9) and a raw water pipe (10) being respectively connected to the top of the vessel body (1), characterized in that, The water-based fertilizer production vessel for improving reaction efficiency also includes a lifting unit (12), which is located inside the vessel body (1) and installed with the vertical center line of the stirring shaft (4) as the center line.

2. The aqueous fertilizer production reactor for improving reaction efficiency according to claim 1, characterized in that, The lifting unit (12) is a spiral lifting blade.

3. The aqueous fertilizer production reactor for improving reaction efficiency according to claim 2, characterized in that, The stirring unit (5) includes two sets of paddle stirring blades. The first set of paddle stirring blades is installed at the bottom of the stirring shaft (4), and the second set of paddle stirring blades is installed in the upper part of the stirring shaft (4).

4. The aqueous fertilizer production reactor for improving reaction efficiency according to claim 1, characterized in that, The water-based fertilizer production vessel for improving reaction efficiency also includes a jacket (2) integrally formed with the vessel body (1). The upper part of the jacket (2) is connected to a cooling water drain pipe (15), and the bottom of the jacket (2) is connected to a cooling water drain pipe (16) and a cooling water supply pipe (17).

5. The aqueous fertilizer production reactor for improving reaction efficiency according to claim 4, characterized in that, A cooling water drain solenoid valve is installed on the cooling water drain pipe (15), a cooling water drain solenoid valve is installed on the cooling water drain pipe (16), and a cooling water supply solenoid valve is installed on the cooling water supply pipe (17).

6. The aqueous fertilizer production reactor for improving reaction efficiency according to claim 4, characterized in that, The outer wall of the jacket (2) is connected to a weighing bracket (25), and a weighing sensor (26) is connected to the lower surface of the weighing bracket (25).

7. The aqueous fertilizer production reactor for improving reaction efficiency according to claim 1, characterized in that, The vessel body (1) is connected to a first steam pipe (19), and a steam coil system (18) is provided on the inner wall of the vessel body (1). The steam coil system (18) is connected to a second steam pipe (20). A first steam electric regulating valve is installed on the first steam pipe (19), and a second steam electric regulating valve is installed on the second steam pipe (20).

8. The aqueous fertilizer production reactor for improving reaction efficiency according to claim 1, characterized in that, The vessel body (1) is equipped with a vessel internal medium temperature sensor (22), a vessel internal medium density sensor (23), and a vessel internal medium pH sensor (24).

9. The aqueous fertilizer production reactor for improving reaction efficiency according to claim 1, characterized in that, A discharge solenoid valve is installed on the discharge pipe (6), an acid supply electric regulating valve is installed on the acid supply pipe (8), an alkali supply electric regulating valve is installed on the alkali supply pipe (9), an electric regulating valve is installed on the raw water pipe (10), and a return pipe (11) is connected to the top of the reactor body (1), with a return electric regulating valve installed on the return pipe (11).

10. The aqueous fertilizer production reactor for improving reaction efficiency according to claim 1, characterized in that, A detachable safety grating (14) is installed inside the production chamber, which is installed 5 to 10 cm below the feeding port (7).

Citation Information

Patent Citations

  • High-polymerization-degree ammonium polyphosphate production tailing recycling device

    CN218107666U

  • Mixer and device for producing water-soluble fertilizer

    CN219024161U