Liquid Reagent Addition Device with Precise Adjustment

Abstract

The invention relates to a liquid reagent adding device having the precision adjustment function. The liquid reagent adding device comprises a liquid inlet pipe, a valve, a handle, an adjustable flow meter and a pipe fitting. A box body of the adjustable flow meter is mounted outside the pipe fitting in a sleeving manner through coaxial engagement of threads. The upper portion of the box body of the adjustable flow meter is connected with the liquid inlet pipe through the valve. The pipe fitting is a hollow pipe fitting, wherein a central hole is formed in the axis of the pipe fitting. The handle is mounted at the top of the pipe fitting. A groove hole communicating with the central hole is formed in the side wall of the middle of the pipe fitting. The groove hole is located inside the box body of the adjustable flow meter. Multiple splashing holes communicating with the central hole are formed in the side wall of the lower portion of the pipe fitting. A blocking plate is mounted at the tail end of the pipe fitting. The liquid reagent adding device is controlled through the precision flow meter, and it is guaranteed that liquid is added quantitatively; the liquid is splashed out of a porous flow guide pipe toward the periphery, wherein the head of the flow guide pipe is closed, flow is dispersed, and it is guaranteed that local technical parameters of a system are within the scope of technical requirements; and the situation that excessive iron is dissolved out or the acidity value excessively deviates or remarkable technological fluctuation is caused is avoided.

Description

technical field [0001] The invention relates to auxiliary equipment in the technical field of NdFeB oxide material processing, in particular to a liquid reagent adding device with a precise adjustment function. Background technique [0002] In the process of dissolving, neutralizing and removing impurities of NdFeB oxide materials, the addition of liquid reagents (hydrochloric acid, liquid caustic soda, ammonia water, ammonium bicarbonate water, etc.) is controlled by Ф25mm pipe fittings and manual valves. The main disadvantages of this method are: the flow of liquid reagent is large, the flow is unstable artificially, the liquid is excessively concentrated, and the acidity value added to the system area is too high, resulting in: ① a corresponding amount of iron slag is dissolved, and the solution contains iron ions too high. ② The corresponding non-rare earth impurities are poorly removed, which increases the workload of the subsequent process or causes instability of the...

AI Technical Summary

Problems solved by technology

The main disadvantages of this method are: the flow of liquid reagent is large, the flow is unstable artificially, the liquid is excessively concentrated, and the acidity value added to the system area is too high, resulting in: ① a corresponding amount of iron slag is dissolved, and the solution contains iron ions too high

② The corresponding non-rare earth impurities are poorly removed, which increases the workload of the subsequent process or causes instability of the subsequent process and product quality problems

③Cause excessive use of acid or alkali, increasing production cost

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