Reaction tank for compound fertilizer preparation
By adopting a multi-blade combined stirring structure in the reaction tank for compound fertilizer preparation, the problems of material sedimentation and uneven mixing were solved, and the full reaction of materials and the improvement of conversion rate were achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JU NAN XIAN DA ER TE HUA FEI YOU XIAN GONG SI
- Filing Date
- 2025-07-10
- Publication Date
- 2026-07-10
Smart Images

Figure CN224475017U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a reaction tank for compound fertilizer preparation, belonging to the technical field of compound fertilizer preparation equipment. Background Technology
[0002] A reaction tank for compound fertilizer preparation is a key piece of equipment used in the compound fertilizer production process to carry out chemical reactions and mixing of various materials. The working process of the reaction tank is as follows: after nitrogen fertilizer, phosphate fertilizer, liquid ammonia, and other materials are added to the reaction tank, the various materials are quickly dispersed and fully contacted under the action of a stirring device, and a chemical reaction occurs within the tank. During the reaction, the control system automatically adjusts parameters based on monitoring data: if the temperature is too low, the heating device is activated; if the pH value deviates from the set value, a neutralizing agent is automatically added.
[0003] The existing reaction tanks for compound fertilizer preparation have a simple agitator structure and design flaws. Materials in the reaction tank tend to settle at the bottom of the tank, resulting in uneven mixing, incomplete local reactions, and reduced material conversion rate. Utility Model Content
[0004] In view of the shortcomings of the prior art, the technical problem to be solved by this utility model is to provide a reaction tank for compound fertilizer preparation, which avoids the sedimentation of materials at the bottom of the tank, allows the materials to be fully mixed and reacted, and improves the material conversion rate.
[0005] The reaction tank for compound fertilizer preparation of this utility model includes a reaction tank body, an agitator rotated inside the reaction tank body, a drive motor installed on the top of the reaction tank body, and the drive motor is connected to the agitator to drive the agitator to rotate. The agitator includes a central shaft, with central helical blades arranged around the central shaft. Several connecting rods are arranged in an array on the central shaft, and peripheral helical blades are connected to the ends of the connecting rods. The central helical blades and peripheral helical blades rotate in opposite directions. An arc-shaped blade is provided at the bottom of the central shaft, and the arc of the arc-shaped blade is consistent with the arc of the bottom of the reaction tank body. Straight blades are also provided on the connecting rods. The straight blades are inclined and located between the central helical blades and the peripheral helical blades.
[0006] The technical solution of this utility model is to provide a reaction tank for compound fertilizer preparation. The material deposited at the bottom of the tank is stirred by the arc-shaped blades at the bottom to prevent it from settling for a long time. The material is stirred and mixed vertically by the central spiral blades and the outer spiral blades, and the material is stirred and mixed radially by the straight blades. The synergistic effect of the multiple blades makes the material in the reaction tank fully and evenly mixed.
[0007] Preferably, the reaction tank has a mounting base at the top center, guide rods around the mounting base, a lifting seat passing through the guide rods, a linear bearing mounted on the lifting seat, and the lifting seat slidably connected to the guide rods through the linear bearing; the drive motor is fixed on the lifting seat.
[0008] Furthermore, lifting cylinders are fixed on both sides of the mounting base. The cylinder rod of the lifting cylinder is fixedly connected to the lifting base. The lifting cylinder can drive the lifting base to rise or fall, thereby causing the drive motor and the stirring paddle to rise or fall.
[0009] Preferably, the top of the reaction tank is also provided with multiple feed inlets for feeding materials, and the top of the feed inlets is hinged with a cover plate.
[0010] Preferably, the reaction tank is provided with a jacket on its side wall, and a medium inlet and a medium outlet are provided on the jacket. The required temperature for the reaction is maintained by introducing a medium into the jacket.
[0011] Preferably, the bottom of the reaction tank is provided with a discharge port, and an electric valve is installed on the discharge port.
[0012] The advantages of this utility model compared with the prior art are:
[0013] The compound fertilizer preparation reaction tank of this utility model uses arc-shaped blades at the bottom to stir the material deposited at the bottom of the tank, preventing it from settling for a long time. The central and outer spiral blades stir and mix the material vertically, and the straight blades stir and mix the material radially. The synergistic effect of multiple blades ensures that the material in the reaction tank is fully and evenly mixed. This utility model can effectively avoid the material from settling at the bottom of the tank, so that the material is fully mixed and reacted, thereby improving the material conversion rate. Attached Figure Description
[0014] Figure 1 This is one of the structural schematic diagrams of this utility model;
[0015] Figure 2 This is the second structural schematic diagram of this utility model;
[0016] Figure 3 This is a cross-sectional view of the present invention;
[0017] Figure 4 This is a schematic diagram of the reaction tank structure;
[0018] Figure 5 This is a schematic diagram of the agitator.
[0019] In the diagram: 1. Reaction tank; 11. Feed inlet; 12. Jacket; 121. Medium inlet; 122. Medium outlet; 13. Mounting base; 131. Guide rod; 14. Discharge port; 2. Lifting base; 3. Drive motor; 4. Lifting cylinder; 5. Electric valve; 6. Agitator; 61. Straight blade; 62. Central shaft; 63. Outer spiral blade; 64. Arc blade; 65. Connecting rod; 66. Central spiral blade. Detailed Implementation
[0020] The present invention will be further described below with reference to specific embodiments.
[0021] like Figures 1-5 As shown, this embodiment is achieved through the following technical solution: It includes a reaction tank 1, with a stirring paddle 6 rotatably mounted inside the reaction tank 1. A drive motor 3 is installed on the top of the reaction tank 1, and the drive motor 3 is connected to the stirring paddle 6 to drive the stirring paddle 6 to rotate. The stirring paddle 6 includes a central shaft 62, with a central helical blade 66 arranged around the central shaft 62. Several connecting rods 65 are arrayed on the central shaft 62, and peripheral helical blades 63 are connected to the ends of the connecting rods 65. The central helical blade 66 and the peripheral helical blades 63 rotate in opposite directions. An arc-shaped blade 64 is provided at the bottom of the central shaft 62, and the arc-shaped blade 64 has the same curvature as the bottom of the reaction tank 1. A straight blade 61 is also provided on the connecting rod 65, and the straight blade 61 is inclined and located between the central helical blade 66 and the peripheral helical blades 63.
[0022] In this embodiment, the reaction tank 1 has a mounting base 13 at the top center, and guide rods 131 are arranged around the mounting base 13. A lifting seat 2 is passed through the guide rods 131, and a linear bearing is installed on the lifting seat 2. The lifting seat 2 is slidably connected to the guide rods 131 through the linear bearing. The drive motor 3 is fixed on the lifting seat 2.
[0023] The mounting base 13 has lifting cylinders 4 fixed on both sides. The cylinder rod of the lifting cylinder 4 is fixedly connected to the lifting seat 2. The lifting cylinder 4 can drive the lifting seat 2 to rise or fall, thereby causing the drive motor 3 and the stirring paddle 6 to rise or fall. The top of the reaction tank 1 is also provided with multiple feed ports 11 for feeding materials. The top of the feed ports 11 is hinged with a cover plate. The side wall of the reaction tank 1 is provided with a jacket 12. The jacket 12 is provided with a medium inlet 121 and a medium outlet 122. The required temperature for the reaction is maintained by introducing a medium into the jacket 12. The bottom of the reaction tank 1 is provided with a discharge port 14, and an electric valve 5 is installed on the discharge port 14.
[0024] The method of using this utility model is as follows:
[0025] The material is fed into the reaction tank 1 through the feed inlet 11. The drive motor 3 is started, and the material deposited at the bottom of the tank is stirred by the arc-shaped blades 64 at the bottom to prevent it from settling for a long time. The material is pushed from bottom to top by the central spiral blades 66 and from top to bottom by the outer spiral blades 63, so that the material is mixed from top to bottom. The material is also radially stirred and mixed by the straight blades 61. The synergistic effect of the multiple blades makes the material in the reaction tank fully and evenly mixed.
[0026] Of course, the above description is only a preferred embodiment of this utility model and should not be considered as limiting the scope of the embodiments of this utility model. This utility model is not limited to the above examples, and all equivalent changes and improvements made by those skilled in the art within the scope of this utility model should be included in the patent coverage of this utility model.
Claims
1. A reaction tank for preparing compound fertilizer, characterized in that, The reaction vessel includes a reaction tank (1), a stirring paddle (6) is rotatably mounted inside the reaction tank (1), and a drive motor (3) is mounted on the top of the reaction tank (1). The drive motor (3) is connected to the stirring paddle (6) in a transmission connection. The stirring paddle (6) includes a central shaft (62), a central helical blade (66) is arranged around the central shaft (62), and several connecting rods (65) are arranged in an array on the central shaft (62). The ends of the connecting rods (65) are connected to peripheral helical blades (63). The central helical blade (66) and the peripheral helical blades (63) rotate in opposite directions. The bottom of the central shaft (62) is provided with an arc-shaped blade (64), which has the same curvature as the bottom of the reaction tank (1). The connecting rods (65) are also provided with straight blades (61), which are inclined and located between the central helical blades (66) and the peripheral helical blades (63).
2. The reaction tank for compound fertilizer preparation according to claim 1, characterized in that, The reaction tank (1) has a mounting base (13) at the top center, and guide rods (131) are arranged around the mounting base (13). A lifting seat (2) is installed on the guide rods (131), and a linear bearing is installed on the lifting seat (2). The lifting seat (2) is slidably connected to the guide rods (131) through the linear bearing. The drive motor (3) is fixed on the lifting seat (2).
3. The reaction tank for compound fertilizer preparation according to claim 2, characterized in that, The mounting base (13) is fixed with lifting cylinders (4) on both sides, and the cylinder rod of the lifting cylinder (4) is fixedly connected to the lifting base (2).
4. The reaction tank for compound fertilizer preparation according to claim 1, characterized in that, The top of the reaction tank (1) is also provided with multiple feed inlets (11) for feeding materials, and the top of the feed inlets (11) is hinged with a cover plate.
5. The reaction tank for compound fertilizer preparation according to claim 4, characterized in that, The reaction tank (1) has a jacket (12) on its side wall, and a medium inlet (121) and a medium outlet (122) are provided on the jacket (12).
6. The reaction tank for compound fertilizer preparation according to claim 5, characterized in that, The reaction tank (1) is provided with a discharge port (14) at the bottom, and an electric valve (5) is installed on the discharge port (14).