CN-224221296-U - Continuous acidification reaction device for preparing calcium superphosphate

Abstract

The utility model relates to the technical field of calcium phosphate preparation, and particularly discloses a continuous acidification reaction device for preparing superphosphate, wherein a funnel-shaped feeding hopper is arranged at the upper end part of a reaction kettle, a feeding baffle is rotationally connected inside the funnel-shaped feeding hopper, a spur gear is sleeved on the outer surface of the feeding baffle, a rotating shaft is rotationally connected at the upper end part of the reaction kettle, an incomplete gear is sleeved on the outer surface of the rotating shaft, a tension spring is sleeved on the outer surface of the funnel-shaped feeding hopper, the rotating shaft rotates to drive the incomplete gear to be meshed with the spur gear so as to enable the feeding baffle to swing clockwise to be opened, and due to the discontinuous characteristic of incomplete gear teeth, the feeding baffle is disengaged after rotating for a certain angle, at the moment, ground phosphate rock falls into the reaction kettle through an inclined plane feeding box and a material injection valve under the action of gravity to finish feeding, then the tension spring pulls the baffle back to reset, the rotating shaft continuously rotates, and the swinging frequency of the baffle can be accurately controlled by controlling the swinging frequency of a driving motor.

Inventors

• LIU FUXIANG
• LI ANG
• XU GUANGXING
• CHEN MINGYONG
• WANG XINGGUO
• DAI KUN

Assignees

• 贵州越都化工有限公司

Dates

Publication Date

20260512

Application Date

20250424

Claims (8)

1. 1. The continuous acidification reaction device for preparing the calcium superphosphate comprises a reaction kettle (11), wherein a funnel-shaped feeding hopper (12) is arranged at the upper end part of the reaction kettle (11), and is characterized in that a quantitative mechanism for shielding discharging is arranged inside the funnel-shaped feeding hopper (12), the quantitative mechanism comprises a feeding baffle (13), the feeding baffle (13) is rotationally connected inside the funnel-shaped feeding hopper (12), a spur gear (14) is sleeved on the outer surface of the feeding baffle (13), an intermittent mechanism for driving the feeding baffle (13) to swing is arranged inside the reaction kettle (11), the intermittent mechanism comprises a rotating shaft (15) and an incomplete gear (16), the rotating shaft (15) is rotationally connected at the upper end part of the reaction kettle (11), the incomplete gear (16) is sleeved on the outer surface of the rotating shaft (15), and the incomplete gear (16) is meshed with the spur gear (14). Wherein, the extension spring (17) is sleeved on the outer surface of the funnel-shaped feeding hopper (12).
2. 2. A continuous acidification reaction device for preparing calcium superphosphate according to claim 1, characterized in that said tension spring (17) is sleeved on the outer surface of the feeding baffle (13); Wherein, driving motor (18) is fixedly connected with at the upper end of reaction kettle (11).
3. 3. A continuous acidification reaction device for the preparation of calcium superphosphate according to claim 2, characterized in that said rotation shaft (15) is arranged on the external surface of the drive motor (18); Wherein, the upper end of the reaction kettle (11) is fixedly connected with a hopper mounting frame (19).
4. 4. A continuous acidification reaction device for the preparation of calcium superphosphate according to claim 3, characterized in that said funnel-shaped loading hopper (12) is fixedly connected inside a hopper mounting frame (19); Wherein the upper end part is fixedly connected with an inclined plane feeding box (21).
5. 5. A continuous acidification reaction device for producing calcium superphosphate according to claim 4, characterized in that said feeding baffle (13) is located at the upper end of the inclined feed tank (21); Wherein, reation kettle (11) surface fixedly connected with feed liquor fill (22).
6. 6. A continuous acidification reaction device for producing calcium superphosphate according to claim 5, characterized in that an inclined infusion tube (23) is arranged inside said liquid inlet hopper (22); wherein, feed liquor fill (22) surface threaded connection has internal thread to keep off lid (24).
7. 7. A continuous acidification reaction device for preparing calcium superphosphate according to claim 6, characterized in that a cylindrical stop block (25) is fixedly connected inside the internal thread stop cover (24), and the cylindrical stop block (25) is sleeved inside the liquid inlet hopper (22); Wherein, reation kettle (11) surface fixedly connected with heating cabinet (26).
8. 8. A continuous acidification reaction device for preparing calcium superphosphate according to claim 7, characterized in that the lower end of the reaction kettle (11) is fixedly connected with a stirring motor (27); Wherein a liquid discharge valve (28) is arranged in the reaction kettle (11).

Description

Continuous acidification reaction device for preparing calcium superphosphate Technical Field The utility model relates to the technical field of calcium phosphate preparation, in particular to a continuous acidification reaction device for preparing calcium superphosphate. Background The continuous acidification reaction device for preparing the superphosphate plays a key role in the production of the superphosphate. Calcium superphosphate is used as an important phosphate fertilizer and is widely applied to agricultural production. The continuous acidification reaction in the preparation process aims at fully reacting the ground phosphate rock with phosphoric acid to generate the effective phosphorus component absorbable by crops. Under the background that the demand of modern agriculture for phosphate fertilizer is continuously growing, the efficient and stable production of calcium superphosphate is important. The continuous acidification reaction device can improve the production efficiency by realizing continuous mixing and reaction of the ground phosphate rock and the phosphoric acid, ensures the stability of the product quality, meets the increasing demands of the market on the superphosphate, and is generally required to be applied to the following technology in practical application: 1. The accurate feeding technology can accurately control the feeding quantity and feeding speed of the phosphate rock powder and the phosphoric acid, ensures that the phosphate rock powder and the phosphoric acid always enter a reaction area in a proper proportion, and is a key for ensuring that the reaction is fully carried out and improving the yield and quality of the superphosphate. 2. The efficient mixing technology is that in the reaction device, an efficient stirring or mixing mechanism is needed to quickly and uniformly mix the ground phosphate rock with the phosphoric acid, so that the contact area between reactants is increased, and the reaction rate is accelerated. 3. And in the temperature control technology, the acidification reaction is sensitive to temperature, and the proper temperature can optimize the reaction process, improve the reaction efficiency and reduce the occurrence of side reactions. Thus, the apparatus needs to be equipped with accurate temperature control techniques to ensure that the reaction proceeds within a suitable temperature range. 4. And in the corrosion-resistant technology, the phosphoric acid has corrosiveness, so that the material and the internal structure of the reaction device are required to have good corrosion resistance, the service life and the safety of the device are ensured, and the equipment failure risk caused by corrosion is reduced. At present, various equipment and modes are adopted for realizing continuous acidification reaction of calcium superphosphate. Part of the devices adopt a gravity self-flowing feeding mode, and the phosphate rock powder and phosphoric acid enter the reaction kettle through a simple pipeline or a funnel by utilizing the gravity of the phosphate rock powder and the phosphoric acid. The method has simple structure, but is difficult to accurately control the feeding quantity and the feeding speed, and easily causes the imbalance of the reaction proportion. Still other devices use screw conveyors to convey ground phosphate rock, control the feed rate by adjusting the rotational speed of the screw, simultaneously convey phosphoric acid using pipes, and control the flow rate through valves. However, screw conveyors are prone to plugging problems in this manner, and the accuracy and durability of the phosphoric acid pipeline valve is limited, affecting the stability of the feed. In addition, some advanced devices adopt metering pumps to convey phosphoric acid, and phosphorite powder is metered by an electronic scale, but the equipment cost is higher, and the technical requirements on maintenance personnel are also higher. However, the above-described manner has a remarkable problem. Continuous feeding of phosphate rock powder is needed in the process of acidification reaction, but the demand for the quantity of the phosphate rock powder is changed along with the process of the reaction stage, the existing continuous feeding mechanism often lacks continuous and flexible adjusting functions, the defect of insufficient supply of the phosphate rock powder easily occurs, the reaction rate is reduced, the productivity of reaction equipment cannot be fully utilized, and the production efficiency is reduced. Disclosure of utility model Aiming at the defects of the prior art, the utility model provides a continuous acidification reaction device for preparing calcium superphosphate, which solves the technical problems that continuous feeding of phosphate rock powder is needed in the acidification reaction, the demand for the quantity of the phosphate rock powder is changed along with the progress of the reaction stage, the existing continuous feeding