A cerium hydroxide precipitation filtration device

Abstract

This application relates to the technical field of precipitation filtration equipment, and discloses a cerium hydroxide precipitation filtration device, including a reaction vessel. A filter box is fixedly installed at the bottom of the reaction vessel. A functional box is fixedly installed on the left side of the filter box and the left side of the reaction vessel. A partition is fixedly installed on the inner wall of the reaction vessel. A feed pipe is provided at the top of the reaction vessel, and the bottom end of the feed pipe passes through the bottom of the partition. A stirring mechanism is provided inside the reaction vessel. A motor is fixedly installed on the inner wall of the left side of the functional box, and the right end of the motor output shaft extends into the reaction vessel. This application has the following advantages and effects: by setting up a material-distributing mechanism, it can flatten the concentrated accumulation of precipitation, avoid local excessive thickness which would increase the resistance to mother liquor penetration, and thus improve the filtration efficiency; at the same time, it can realize the material-distributing action to break the bridging structure between precipitation particles, promote the discharge of mother liquor wrapped in the gaps between particles, and reduce the moisture content of the filter cake.

Description

Technical Field

[0001] This application relates to the field of precipitation filtration equipment technology, and in particular to a cerium hydroxide precipitation filtration equipment. Background Technology

[0002] In the preparation process of cerium hydroxide, precipitation filtration is the core step to achieve solid-liquid separation and product purification. The process involves multiple coordinated steps such as precipitation formation, feed liquid transportation, filtration separation, and filter cake treatment. The operational precision of each step directly affects the purity and yield of the final product.

[0003] In practical applications, it has been found that in traditional filtration devices, the mixture of cerium hydroxide precipitate and mother liquor is often directly discharged into the filter box through a single pipe. The material falls naturally under gravity, easily forming a dense accumulation in the central area of ​​the filter plate. As filtration progresses, the precipitate gradually accumulates to form a filter cake, with the concentrated accumulation area developing an excessively thick filter cake layer first. This excessively thick filter cake layer exacerbates inter-particle bridging. The precipitate particles are compressed together to form a dense structure, which not only hinders the flow of mother liquor but also traps some of it inside the filter cake, leading to increased moisture content and increased energy consumption in subsequent drying processes. Simultaneously, the filter pores in the concentrated accumulation area are easily clogged by fine particles, requiring frequent disassembly of the filter plate for cleaning, interrupting the production process and further reducing equipment utilization. Therefore, we propose a cerium hydroxide precipitation filtration device to solve these problems. Utility Model Content

[0004] The purpose of this application is to address the shortcomings of existing technologies, such as the easy increase of filter cake moisture content and easy clogging of filter pores by fine particles, the need for frequent disassembly of filter plates during cleaning, and the reduction of equipment utilization. Therefore, a cerium hydroxide precipitation filtration device is proposed.

[0005] The above-mentioned technical objective of this application is achieved through the following technical solution: a cerium hydroxide precipitation filtration device, comprising a reaction vessel, a filter box fixedly installed at the bottom of the reaction vessel, a functional box fixedly installed on the left side of the filter box and the left side of the reaction vessel, a partition fixedly installed on the inner wall of the reaction vessel, a feed pipe provided at the top of the reaction vessel, the bottom end of the feed pipe penetrating the bottom of the partition, a stirring mechanism provided inside the reaction vessel, a motor fixedly installed on the inner wall of the left side of the functional box, the right end of the motor output shaft extending into the reaction vessel, and the partition located below the motor output shaft; a filtration mechanism provided inside the filter box, a common discharge pipe provided between the reaction vessel and the filter box, a solenoid valve provided inside the discharge pipe, a reciprocating mechanism provided between the filter box and the functional box, a material feeding mechanism provided inside the filter box, a door provided on the front side of the filter box, a controller provided on the front side of the functional box, the controller being electrically connected to the motor and the solenoid valve, a pressure relief pipe fixedly installed on the right side of the reaction vessel, a pressure relief valve provided inside the pressure relief pipe, and a drain pipe provided at the bottom of the rear side of the filter box.

[0006] A further configuration of this application is as follows: the stirring mechanism includes a stirring shaft, a stirring frame, and a scraper. The stirring shaft is rotatably mounted on the inner wall of the top of the reactor. The bottom end of the stirring shaft extends to below the partition. A stirring frame is provided on the stirring shaft and is located below the partition. A scraper is provided on the outside of the stirring frame and is located below the partition. A gear mechanism is provided between the stirring shaft and the motor output shaft.

[0007] By adopting the above technical solution and setting up a stirring mechanism, the stirring shaft can drive the stirring frame and scraper to rotate, so as to achieve the purpose of fully contacting and reacting the cerium ions in the solution with the precipitant to form cerium hydroxide precipitate. This also enables the removal of precipitate particles attached to the wall surface, avoiding the difficulty of cleaning the reaction vessel in the later stages.

[0008] A further feature of this application is that the gear mechanism includes two bevel gears, and bevel gears are fixedly sleeved on both the stirring shaft and the right end of the motor output shaft. The bevel gears are located above the partition plate, and the two bevel gears mesh with each other.

[0009] By adopting the above technical solution and by setting a gear mechanism, the motor output shaft can drive the stirring shaft to rotate synchronously.

[0010] A further feature of this application is that the filtration mechanism includes a mounting base and a filter plate, with mounting bases fixedly installed on both inner walls of the filter box, and the same filter plate disposed between the two mounting bases.

[0011] By adopting the above technical solution and by setting up a filtration mechanism, the mixture of cerium hydroxide precipitate and mother liquor is discharged into the filter box through the feed pipe and falls onto the filter plate supported by the mounting base. This allows the mother liquor to permeate through the filter holes of the filter plate and be collected below, while the cerium hydroxide precipitate is retained on the filter plate, thus achieving the purpose of solid-liquid separation.

[0012] A further configuration of this application is as follows: the reciprocating mechanism includes a reciprocating lead screw and a lead screw seat; the same reciprocating lead screw is rotatably mounted on the left inner wall of the function box and the right inner wall of the filter box; the reciprocating lead screw is located above the mounting base; the same lead screw seat is threaded onto the reciprocating lead screw; the lead screw seat is located inside the filter box; and a transmission mechanism is provided between the reciprocating lead screw and the motor output shaft.

[0013] By adopting the above technical solution and by setting up a reciprocating mechanism, the reciprocating screw can drive the screw seat to move back and forth, thereby achieving the purpose of driving the material feeding mechanism to move back and forth.

[0014] A further feature of this application is that the feeding mechanism includes a brush holder and a feeding brush, a brush holder is fixedly installed at the bottom of the screw seat, a feeding brush is provided at the bottom of the brush holder, and the feeding brush is adapted to the filter plate.

[0015] By adopting the above technical solution and setting up a material-distributing mechanism, the brush holder can drive the material-distributing brush to move back and forth, so that the material-distributing brush can move the sediment on the filter plate back and forth, thus flattening the concentrated sediment, avoiding excessive local thickness that would increase the resistance to mother liquor penetration, and thereby improving the filtration efficiency.

[0016] A further configuration of this application is as follows: the transmission mechanism includes two transmission wheels and a transmission belt. Transmission wheels are fixedly sleeved on both the reciprocating lead screw and the motor output shaft. The transmission wheels are located inside the function box, and the same transmission belt is sleeved on both transmission wheels.

[0017] By adopting the above technical solution and by setting up a transmission mechanism, the motor output shaft can drive the reciprocating lead screw to rotate synchronously.

[0018] A further feature of this application is that the same arc-shaped plate is fixedly installed on the inner walls of both sides of the filter box, the arc-shaped plate is located above the reciprocating lead screw, and the lead screw seat is slidably sleeved on the arc-shaped plate.

[0019] By adopting the above technical solution, and by setting an arc plate, the arc plate can guide and limit the movement of the lead screw seat, so that the lead screw seat can slide stably back and forth along the arc plate under the drive of the reciprocating lead screw, avoiding the lead screw seat from deviating, shaking or jamming during the movement.

[0020] The beneficial effects of this application are:

[0021] (1) Through the cooperation of motor, bevel gear, stirring shaft, stirring frame and tube sheet, the motor can drive the stirring frame and scraper to rotate, the stirring frame can stir the liquid, the cerium ions in the solution can fully contact and react with the precipitant to form cerium hydroxide precipitate, and the scraper can remove the precipitate particles attached to the wall surface, so as to avoid the difficulty of cleaning the reactor in the later stage.

[0022] (2) Through the cooperation of the transmission wheel, transmission belt, reciprocating screw, screw seat, brush seat and material-pushing brush, the motor can drive the brush seat and material-pushing brush to move back and forth. The material-pushing brush can move the sediment on the filter plate back and forth, which can flatten the concentrated sediment, avoid local excessive thickness which would increase the resistance of mother liquor penetration, and thus improve the filtration efficiency. At the same time, the material-pushing action can break the bridging structure between sediment particles, promote the discharge of mother liquor wrapped in the gaps between particles, and reduce the moisture content of the filter cake. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a three-dimensional structural schematic diagram of a cerium hydroxide precipitation and filtration device according to this application;

[0025] Figure 2 This is a schematic diagram of the internal structure of the reactor of a cerium hydroxide precipitation and filtration device according to this application;

[0026] Figure 3 This is a schematic diagram of the internal structure of the functional box and filter box of a cerium hydroxide precipitation filtration device according to this application;

[0027] Figure 4 This is a schematic diagram of the structure A of a cerium hydroxide precipitation filtration device according to this application.

[0028] In the diagram: 1. Reactor; 101. Baffle plate; 102. Feed pipe; 103. Discharge pipe; 2. Filter box; 201. Mounting base; 202. Filter plate; 3. Functional box; 301. Motor; 302. Bevel gear; 303. Drive wheel; 304. Drive belt; 4. Stirring shaft; 401. Stirring frame; 402. Scraper; 5. Reciprocating screw; 501. Screw seat; 6. Brush seat; 601. Feeding brush; 7. Arc plate; 8. Pressure relief pipe. Detailed Implementation

[0029] The technical solution of this application will be clearly and completely described below with reference to specific embodiments. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0030] See Figures 1-4This application provides a cerium hydroxide precipitation and filtration device, including a reaction vessel 1, a filter box 2 fixedly installed at the bottom of the reaction vessel 1, a functional box 3 fixedly installed on the left side of the filter box 2 and the left side of the reaction vessel 1, a partition 101 fixedly installed on the inner wall of the reaction vessel 1, a feed pipe 102 provided at the top of the reaction vessel 1, the bottom end of the feed pipe 102 penetrating the bottom of the partition 101, a stirring mechanism provided inside the reaction vessel 1, a motor 301 fixedly installed on the inner wall of the left side of the functional box 3, the right end of the output shaft of the motor 301 extending into the reaction vessel 1, and the partition 101 located at the electric motor. Below the output shaft of machine 301; a filtration mechanism is installed inside the filter box 2; the same feed pipe 103 is installed between the reactor 1 and the filter box 2; a solenoid valve is installed inside the feed pipe 103; a reciprocating mechanism is installed between the filter box 2 and the function box 3; a feeding mechanism is installed inside the filter box 2; a door is installed on the front side of the filter box 2; a controller is installed on the front side of the function box 3; the controller is electrically connected to the motor 301 and the solenoid valve; a pressure relief pipe 8 is fixedly installed on the right side of the reactor 1; a pressure relief valve is installed inside the pressure relief pipe 8; and a drain pipe is installed at the bottom rear side of the filter box 2.

[0031] Specifically, the stirring mechanism includes a stirring shaft 4, a stirring frame 401, and a scraper 402. The stirring shaft 4 is rotatably mounted on the inner wall of the top of the reactor 1. The bottom end of the stirring shaft 4 extends to below the partition 101. The stirring frame 401 is mounted on the stirring shaft 4 and is located below the partition 101. The scraper 402 is mounted on the outer side of the stirring frame 401 and is located below the partition 101. A gear mechanism is provided between the stirring shaft 4 and the output shaft of the motor 301.

[0032] Specifically, the gear mechanism includes two bevel gears 302. Both the stirring shaft 4 and the right end of the output shaft of the motor 301 are fixedly fitted with bevel gears 302. The bevel gears 302 are located above the partition plate 101, and the two bevel gears 302 mesh with each other.

[0033] Specifically, the filtration mechanism includes a mounting base 201 and a filter plate 202. Mounting bases 201 are fixedly installed on both inner walls of the filter box 2, and the same filter plate 202 is arranged between the two mounting bases 201.

[0034] Specifically, the reciprocating mechanism includes a reciprocating lead screw 5 and a lead screw seat 501. The same reciprocating lead screw 5 is rotatably installed on the inner left side of the function box 3 and the inner right side of the filter box 2. The reciprocating lead screw 5 is located above the mounting base 201. The same lead screw seat 501 is threaded onto the reciprocating lead screw 5. The lead screw seat 501 is located inside the filter box 2. A transmission mechanism is provided between the reciprocating lead screw 5 and the output shaft of the motor 301.

[0035] Specifically, the feeding mechanism includes a brush holder 6 and a feeding brush 601. The brush holder 6 is fixedly installed at the bottom of the screw seat 501, and the feeding brush 601 is provided at the bottom of the brush holder 6. The feeding brush 601 is adapted to the filter plate 202.

[0036] Specifically, the transmission mechanism includes two transmission wheels 303 and a transmission belt 304. The transmission wheels 303 are fixedly sleeved on both the reciprocating screw 5 and the output shaft of the motor 301. The transmission wheels 303 are located inside the function box 3, and the same transmission belt 304 is sleeved on the two transmission wheels 303.

[0037] Specifically, the same arc-shaped plate 7 is fixedly installed on the inner walls of both sides of the filter box 2. The arc-shaped plate 7 is located above the reciprocating screw 5, and the screw seat 501 is slidably sleeved on the arc-shaped plate 7.

[0038] In this application, during use, the cerium-containing solution and precipitant are first fed into the reaction vessel 1 below the partition 101 through the feed pipe 102. After the controller sets the reaction parameters, the motor 301 is started. The output shaft of the motor 301 drives the stirring shaft 4 to rotate through two meshing bevel gears 302. The stirring shaft 4 can drive the stirring frame 401 to stir the liquid, which can achieve the purpose of fully contacting and reacting the cerium ions in the solution with the precipitant to form cerium hydroxide precipitate; at the same time, the scraper 402 on the outside of the stirring frame 401 is in contact with the reaction vessel. The inner wall of reactor 1 rotates, which can scrape off the precipitated particles adhering to the wall surface, avoiding the difficulty of cleaning reactor 1 later. The output shaft of motor 301 synchronously drives the reciprocating screw 5 to rotate through two transmission wheels 303 and transmission belt 304. The reciprocating screw 5 can drive the screw seat 501 to slide back and forth along the arc plate 7. The screw seat 501 can drive the feeding brush 601 to move synchronously through the brush seat 6. When the reaction reaches the set time, the controller opens the solenoid valve in the feed pipe 103, and the hydroxide in reactor 1 is released. The mixture of cerium precipitate and mother liquor is discharged into the filter box 2 through the feed pipe 103 and falls onto the filter plate 202 supported by the mounting base 201. This allows the mother liquor to permeate through the filter holes of the filter plate 202 and be collected below, while the cerium hydroxide precipitate is trapped on the filter plate 202, achieving the purpose of solid-liquid separation. At this time, the reciprocating material brush 601 moves back and forth to move the precipitate on the filter plate 202, which can flatten the concentrated precipitate, avoid local excessive thickness, and increase the resistance to mother liquor permeation, thereby improving the filtration efficiency. At the same time, the material moving action can break the bridging structure between the precipitate particles, promote the discharge of mother liquor wrapped in the gaps between the particles, and reduce the moisture content of the filter cake. During the filtration process, if the pressure in the reactor 1 exceeds the safety value, the pressure relief valve can automatically open to release the pressure and ensure the safe operation of the equipment. After filtration is completed, the controller shuts off the motor 301 and the solenoid valve, the material brush 601 stops at the initial position, and the operator opens the front door of the filter box 2 to remove the cerium hydroxide filter cake on the filter plate 202.

Claims

1. A cerium hydroxide precipitation filtration apparatus, characterized by, The reactor includes a reaction vessel (1), a filter box (2) is fixedly installed at the bottom of the reaction vessel (1), a functional box (3) is fixedly installed on the left side of the filter box (2) and the left side of the reaction vessel (1), a partition (101) is fixedly installed on the inner wall of the reaction vessel (1), a feed pipe (102) is provided at the top of the reaction vessel (1), the bottom end of the feed pipe (102) passes through the bottom of the partition (101), a stirring mechanism is provided inside the reaction vessel (1), a motor (301) is fixedly installed on the inner wall of the left side of the functional box (3), the right end of the output shaft of the motor (301) extends into the reaction vessel (1), and the partition (101) is located below the output shaft of the motor (301). The filter box (2) is equipped with a filtration mechanism. The reactor (1) and the filter box (2) are connected by the same feed pipe (103). The feed pipe (103) is equipped with a solenoid valve. The filter box (2) and the functional box (3) are connected by a reciprocating mechanism. The filter box (2) is equipped with a feeding mechanism. The filter box (2) is equipped with a door on the front side. The functional box (3) is equipped with a controller on the front side. The controller is electrically connected to the motor (301) and the solenoid valve. The reactor (1) is fixedly installed with a pressure relief pipe (8) on the right side. The pressure relief pipe (8) is equipped with a pressure relief valve. The filter box (2) is equipped with a drain pipe at the bottom of the rear side.

2. The cerium hydroxide precipitation filtration apparatus according to claim 1, characterized by: The stirring mechanism includes a stirring shaft (4), a stirring frame (401), and a scraper (402). The stirring shaft (4) is rotatably mounted on the inner wall of the top of the reactor (1). The bottom end of the stirring shaft (4) extends to below the partition plate (101). The stirring frame (401) is provided on the stirring shaft (4). The stirring frame (401) is located below the partition plate (101). The scraper (402) is provided on the outer side of the stirring frame (401). The scraper (402) is located below the partition plate (101). A gear mechanism is provided between the stirring shaft (4) and the output shaft of the motor (301).

3. The cerium hydroxide precipitation filtration apparatus of claim 2, wherein: The gear mechanism includes two bevel gears (302). The bevel gears (302) are fixedly sleeved on the stirring shaft (4) and the right end of the output shaft of the motor (301). The bevel gears (302) are located above the partition plate (101) and the two bevel gears (302) mesh with each other.

4. The cerium hydroxide precipitation filtration apparatus of claim 1, wherein: The filtration mechanism includes a mounting base (201) and a filter plate (202). The mounting base (201) is fixedly installed on both inner walls of the filter box (2), and the same filter plate (202) is provided between the two mounting bases (201).

5. The cerium hydroxide precipitation filtration apparatus of claim 1, wherein: The reciprocating mechanism includes a reciprocating lead screw (5) and a lead screw seat (501). The same reciprocating lead screw (5) is rotatably installed on the left inner wall of the functional box (3) and the right inner wall of the filter box (2). The reciprocating lead screw (5) is located above the mounting base (201). The same lead screw seat (501) is threaded on the reciprocating lead screw (5). The lead screw seat (501) is located inside the filter box (2). A transmission mechanism is provided between the reciprocating lead screw (5) and the output shaft of the motor (301).

6. The cerium hydroxide precipitation filtration apparatus of claim 5, wherein: The feeding mechanism includes a brush holder (6) and a feeding brush (601). The brush holder (6) is fixedly installed at the bottom of the screw seat (501). The feeding brush (601) is provided at the bottom of the brush holder (6). The feeding brush (601) is adapted to the filter plate (202).

7. The cerium hydroxide precipitation filtration apparatus of claim 5, wherein: The transmission mechanism includes two transmission wheels (303) and a transmission belt (304). The reciprocating screw (5) and the output shaft of the motor (301) are both fixedly fitted with transmission wheels (303). The transmission wheels (303) are located inside the function box (3). The two transmission wheels (303) are fitted with the same transmission belt (304).

8. The cerium hydroxide precipitation filtration apparatus of claim 5, wherein: The same arc-shaped plate (7) is fixedly installed on the inner walls of both sides of the filter box (2). The arc-shaped plate (7) is located above the reciprocating screw (5). The screw seat (501) is slidably sleeved on the arc-shaped plate (7).

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