CN-121988266-A - Washing device and washing method for washing suspension by coprecipitation method

CN121988266ACN 121988266 ACN121988266 ACN 121988266ACN-121988266-A

Abstract

The application discloses a washing device and a washing method for washing suspension by a coprecipitation method, wherein the washing device comprises a base and a pure water conveying mechanism arranged on the base and used for providing pure water for a stirring barrel, the stirring mechanism comprises the stirring barrel, a liftable stirring assembly and a pH monitoring unit, a discharge port is arranged at the bottom of the stirring barrel and is connected with a polymer permeable membrane, a wastewater recovery mechanism is communicated with the permeable side of the polymer permeable membrane and comprises a wastewater pump and a flowmeter, the wastewater pump pumps out liquid of the stirring barrel through the polymer permeable membrane in a normal washing mode and is switched to reverse operation when the flowmeter detects that the flow is lower than a preset threshold value, so that the pure water is reversely washed through the polymer permeable membrane to clear membrane surface plugs. The washing device and the method can automatically wash the suspension after the coprecipitation reaction in advance, remove waste acid and waste alkali as much as possible, shorten the production process time, save the labor cost and improve the production efficiency.

Inventors

QIAN SENSEN
YANG PENG
ZHANG YONGXIAN
YANG KAI

Assignees

超威电源集团有限公司

Dates

Publication Date: 20260508
Application Date: 20260407

Claims (10)

1. A washing device for washing suspension by a coprecipitation method, which is characterized by comprising a base and a washing device arranged on the base: a pure water delivery mechanism for supplying pure water to the stirring tank; The stirring mechanism comprises a stirring barrel, a liftable stirring assembly and a pH monitoring unit, wherein the bottom of the stirring barrel is provided with a discharge port which is connected with a polymer permeable membrane, The wastewater recovery mechanism is communicated with the permeation side of the polymer permeation membrane and comprises a wastewater pump and a flowmeter; and the wastewater pump pumps out the liquid of the stirring barrel through the polymer permeable membrane in a normal washing mode, and is switched to reverse operation when the flow rate detected by the flowmeter is lower than a preset threshold value, so that pure water is reversely flushed through the polymer permeable membrane to remove membrane surface plugs.
2. The washing device of claim 1, wherein the waste water recovery mechanism further comprises a waste water bucket, the waste water pump is provided with a waste water pump inlet, a waste water pump outlet and a waste water pump pure water inlet, wherein the waste water pump inlet is communicated with the discharge port of the stirring bucket through a first waste water pipe, and the flowmeter is arranged on the first waste water pipe; the pH monitoring unit comprises a pH meter and a display screen which are electrically connected, a circular ring frame is arranged at the top of the stirring barrel, the circular ring frame is fixedly connected with the pH meter, and one end, far away from the display screen, of the pH meter is provided with a detection end.
3. A washing apparatus according to claim 2, wherein, The pure water inlet of the wastewater pump is communicated with a first pure water outlet of the pure water conveying mechanism through a first pure water pipe, and the first pure water pipe is provided with a first one-way valve; a second one-way valve is arranged between the waste water pump outlet and the waste water barrel.
4. The washing device of claim 1, wherein the liftable stirring assembly comprises a column, a slide rail, a rack and pinion transmission mechanism, wherein, The sliding rail is fixedly connected with the base along the vertical direction, the fixed end of the gear-rack transmission mechanism is fixedly connected with the base, the movable end of the gear-rack transmission mechanism is movably connected with the sliding rail and is fixedly connected with the upright post, and the gear-rack transmission mechanism drives the upright post to move along the sliding rail in a lifting manner.
5. The washing apparatus according to claim 4, wherein, Two first vertical plates are arranged on the base in pairs along a first direction, each first vertical plate is provided with a gear groove along the vertical direction, and the gear grooves form the sliding rail; The gear rack transmission mechanism comprises gears, racks and a gear knob, the racks are fixed between the two first vertical plates along the vertical direction, the gears are fixedly connected with the gear knob through connecting shafts, the connecting shafts penetrate through the gear grooves, and the gear knob is used for driving the gears to rotate.
6. The washing device according to claim 4, wherein the liftable stirring assembly further comprises a stirring motor and a stirring shaft which are connected with the upright post, the stirring shaft is driven by the upright post to move up and down along the vertical direction, the stirring motor drives the stirring shaft to rotate, at least two groups of fan blades are mounted on the stirring shaft, and the phase angle between every two adjacent groups of fan blades is 60 degrees.
7. The washing apparatus of claim 4, wherein the liftable stirring assembly further comprises a locking knob for locking the movement of the upright in the vertical direction.
8. A washing apparatus according to claim 3, wherein the pure water delivery mechanism comprises the first pure water outlet and a second pure water outlet, the second pure water outlet being in communication with the pure water inlet of the agitator.
9. The washing device according to claim 2, wherein the discharge port is connected with a second waste pipe, the polymer permeable membrane is arranged between the second waste pipe and the first waste pipe, a discharge pipe is further arranged on the second waste pipe, and a ball valve is arranged on the discharge pipe.
10. A method for washing a suspension by a coprecipitation method, characterized in that the method is carried out by using the washing apparatus according to any one of claims 1 to 9, comprising the steps of: ensuring that the first pure water outlet is communicated with the stirring barrel, and the discharge port of the stirring barrel is only communicated with the wastewater pump; Adding the coprecipitation suspension into a stirring barrel, immersing the detection end of the pH monitoring unit into the coprecipitation suspension, and immersing fan blades on a stirring shaft into the coprecipitation suspension by adjusting a lifting stirring assembly; Starting a pure water pump, and enabling pure water to enter the stirring barrel through a second pure water outlet; Simultaneously starting a wastewater pump, enabling liquid in the stirring barrel to flow out of the wastewater pump through high molecular osmotic membrane osmotic filtration, and displaying a flow value in real time by the flowmeter; when the flow rate detected by the flowmeter is lower than a preset threshold value, the wastewater pump is switched to reversely run, and pure water enters the stirring barrel through the wastewater pump and the first wastewater pipe backflushing polymer osmotic membrane through the first pure water outlet; when the flowmeter detects that the flow reaches a preset threshold, the wastewater pump is switched to forward operation; repeating the first two steps until the pH monitoring unit monitors that the pH value in the stirring barrel reaches a preset value; and closing the wastewater pump and the pure water pump, and collecting the suspension in the stirring barrel.

Description

Washing device and washing method for washing suspension by coprecipitation method Technical Field The invention relates to the technical field of water treatment, in particular to a washing device and a washing method for washing suspension by a coprecipitation method. Background In the industrial production process, the coprecipitation method is a common material synthesis method because of the advantages of simple synthesis process, good uniformity, high element utilization rate and the like, but after the reaction is finished, the suspension usually contains a large amount of H + or OH -, and needs to be removed, and the traditional method is a repeated filter pressing-crushing-washing process for the suspension by adopting a filter pressing method, so that the process is tedious and time-consuming and labor-consuming. Therefore, there is a need for a suspension washing device for coprecipitation method, which can automatically wash the suspension after the coprecipitation reaction, remove waste acid and alkali as much as possible, shorten the production process time, save the labor cost and improve the production efficiency. Disclosure of Invention The technical problem to be solved by the embodiment of the invention is how to provide a washing device and a washing method for washing suspension by a coprecipitation method, which can automatically wash the suspension after the coprecipitation reaction in advance, eliminate waste acid and waste alkali as much as possible, shorten the production process time, save the labor cost and improve the production efficiency. In order to solve the technical problems, the invention provides a washing device for washing suspension by a coprecipitation method, which comprises a base, and a pure water conveying mechanism, a stirring mechanism and a wastewater recovery mechanism which are arranged on the base. Wherein, pure water conveying mechanism is used for providing pure water to the agitator. The stirring mechanism comprises a stirring barrel, a liftable stirring assembly and a pH monitoring unit. The stirring barrel bottom is equipped with the discharge gate, and this discharge gate is connected with polymer osmotic membrane, and waste water recovery mechanism with the osmotic side intercommunication of polymer osmotic membrane includes waste water pump and flowmeter. And the wastewater pump pumps out the liquid of the stirring barrel through the polymer permeable membrane in a normal washing mode, and is switched to reverse operation when the flow rate detected by the flowmeter is lower than a preset threshold value, so that pure water is reversely flushed through the polymer permeable membrane to remove membrane surface plugs. In one possible implementation manner, the wastewater recycling mechanism further comprises a wastewater barrel, the wastewater pump is provided with a wastewater pump inlet, a wastewater pump outlet and a wastewater pump pure water inlet, wherein the wastewater pump inlet is communicated with the discharge port of the stirring barrel through a first wastewater pipe, the flowmeter is arranged on the first wastewater pipe, the wastewater pump pure water inlet is communicated with the pure water conveying mechanism, and the wastewater pump outlet is communicated with the wastewater barrel. In one possible implementation, the wastewater pump pure water inlet communicates with the first pure water outlet of the pure water delivery mechanism through a first pure water pipe, the first pure water pipe being provided with a first check valve. In one possible implementation, a second one-way valve is provided between the wastewater pump outlet and the wastewater tank. In a possible implementation manner, the liftable stirring assembly comprises a stand column, a sliding rail and a gear rack transmission mechanism, wherein the sliding rail is fixedly connected with the base along the vertical direction, a fixed end of the gear rack transmission mechanism is fixedly connected with the base, a movable end of the gear rack transmission mechanism is movably connected with the sliding rail and is fixedly connected with the stand column, and the gear rack transmission mechanism drives the stand column to move along the lifting of the sliding rail. In one possible implementation mode, two first vertical plates are arranged on the base in pairs along a first direction, each first vertical plate is provided with a gear groove along the vertical direction, the gear grooves form the sliding rail, the gear rack transmission mechanism comprises a gear, a rack and a gear knob, the rack is fixed between the two first vertical plates along the vertical direction, the gear is fixedly connected with the gear knob through a connecting shaft, the connecting shaft penetrates through the gear grooves, and the gear knob is used for driving the gear to rotate. In one possible implementation mode, the liftable stirring assembly further comprises a stirring motor and a sti