JP6684380B1 - Intelligent refining and recovery equipment for sulfuric acid - Google Patents

Abstract

The present invention belongs to the field of sulfuric acid recovery technology, specifically an intelligent refining and recovery device for sulfuric acid, including a base, a filtration box, a primary impurity removal box, a secondary impurity removal box, and a recovery treatment box. And a filtration box and a collection processing box are respectively arranged on both sides of the top of the base, and the filtration box and the collection processing box communicate with each other via a first solenoid valve, and the inside of the filtration box is vertically connected. It is rotatably connected to the rotary shaft at the center line, the first friction plate and the second friction plate are arranged on the inner wall of the filtration box, the controller is attached to the top of the filtration box, and the motor is also attached to the top of the filtration box. , The motor is in transmission connection with the rotary shaft, the first friction plate and the second friction plate are arranged symmetrically with respect to the vertical midline of the filtration box, and the primary shaft is attached to the rotary shaft. And pure object removal box and the secondary impurities removal box is provided. The present invention performs intelligent multiple impurity removal on a sulfuric acid waste liquid, improves the quality of removing impurities from the sulfuric acid waste liquid, improves the efficiency of solid-liquid separation using an impurity removal module, and facilitates the cleaning of solid impurities. Can be [Selection diagram] Figure 1

Description

The present invention is in the technical field of sulfuric acid recovery, and more particularly to an intelligent refining and recovery device for sulfuric acid.

In industrial production, waste acids are produced by processes such as nitrification, esterification, sulfonation, alkylation, catalysis and gas drying of organic substances, or processes such as titanium dioxide production, pickling of steel and gas drying. With the continuous increase of sulfuric acid consumption, the amount of waste sulfuric acid in the domestic industry is also increasing year by year, and the recycling of waste sulfuric acid is also attracting more and more attention. In the process of collecting waste sulfuric acid, it is generally necessary to purify the waste sulfuric acid. First, the impurities in the waste sulfuric acid are removed, and then the subsequent steps are performed to obtain sulfuric acid with a low impurity content and recycle it. Turn into.

Some technical solutions for sulfuric acid recovery have also appeared in the prior art, for example, Chinese Patent Application No. 20181074666161 discloses a waste sulfuric acid recovery device including a filter for filtering impurities in waste sulfuric acid. , The filter is sequentially connected by a pipeline to a primary reaction kettle for removing chlorine gas and a secondary reaction kettle for removing hydrogen peroxide, and waste generated in the semiconductor industry by the primary reaction kettle and the secondary reaction kettle Hydrogen peroxide and chlorine gas in sulfuric acid can be removed, and the waste sulfuric acid treated thereby reaches the electronic level of sulfuric acid standard and can be recycled.

The waste sulfuric acid recovery device according to this technical solution has a simple structure and recovery method, and has high recovery efficiency. However, in such a sulfuric acid recovery apparatus, when the sulfuric acid waste liquid is subjected to the impurity removal treatment, the sulfuric acid waste liquid remains in the filtered solid impurities, so the recovery amount of the sulfuric acid waste liquid decreases, and the residual sulfuric acid waste liquid remains. Reduces the safety factor of manually cleaning solid impurities, and wet solid impurities are difficult to clean manually, increasing the workload.

Chinese Patent Application Publication No. 204984898

Problems to be Solved by the Invention

In order to make up for the shortcomings of the prior art, the intelligent refining and recovery device for sulfuric acid provided by the present invention can control the motor by the control device and is used in combination with the first friction plate and the second friction plate. By doing so, the primary impurity removal box and the secondary impurity removal box perform differential rotation and reciprocating motion, which helps improve the efficiency of intelligent multiple removal of impurities in the sulfuric acid waste liquid in the filtration box, and removes impurities in the sulfuric acid waste liquid. The quality is improved, and moreover, the impurity removal module is used to press the solid impurities, improve the efficiency of solid-liquid separation, and facilitate the cleaning to the solid impurities in the later stage.

The intelligent purification and recovery device for sulfuric acid according to the present invention comprises a base, a filtration box, a primary impurity removal box, a secondary impurity removal box, and a recovery treatment box, wherein the filtration box and the recovery treatment box are They are arranged on both sides of the top of the base, respectively, and communicate with each other between the filtration box and the recovery treatment box through a first solenoid valve, and the inside of the filtration box is rotatable with a rotating shaft at a vertical midline. A first friction plate and a second friction plate are disposed on the inner wall of the filtration box, a controller is attached to the top of the filtration box, and a motor is attached to the top of the filtration box. Is connected to the rotary shaft by power transmission, a water pump is also provided at the bottom of the filtration box, and a buffer spring is fixed to the inner wall of the filtration box. The first friction plate and the second friction plate are arranged symmetrically with respect to the vertical center line of the filtration box, and the rotary shaft is provided with a primary impurity removal box and a secondary impurity removal box. Each of the cross sections of the secondary impurity removal box has a fan-shaped structure, and impurities are removed both inside the larger end of the primary impurity removal box and inside the smaller end of the secondary impurity removal box. A module is provided, a plastic sealing film is provided between the primary impurity removal box and the same side of the smaller end of the secondary impurity removal box, and the primary impurity removal box and the secondary impurity removal box are provided. Both of the removal boxes are equipped with pressure valves used for liquid supply,

The primary impurity removal box is disposed at the position of the first friction plate, and the outer wall of the larger end portion of the primary impurity removal box contacts the first friction plate, and one side wall of the primary impurity removal box. A filtration module is hingedly connected to the primary impurity removal box, and a check valve used for discharging liquid is provided in the primary impurity removal box.

The secondary impurity removal box is disposed at the position of the second friction plate, and the outer wall of the larger end of the secondary impurity removal box contacts the second friction plate, and the secondary impurity removal box is attached. A second solenoid valve is provided on the inner wall of the larger end of the arc-shaped elastic rod, and an arc-shaped elastic rod is fixed to a position near the filtration module outside the secondary impurity removal box. When the first solenoid valve and the second solenoid valve are fixed to the filtration module and are in the facing position when in the initial position, the friction resistance of the first friction plate that contacts the primary impurity removal box and the secondary impurities. The friction resistance of the second friction plate in the removal box is different .

In operation, first, the water pump introduces an appropriate amount of sulfuric acid waste liquid into the inside of the filtration box, and then the controller operates the motor so that it can be switched between forward and reverse rotation. Driving the rotation of the primary impurity removal box and the secondary impurity removal box via the rotary shaft, a friction strip is provided at the connection position between the rotary shaft and the primary impurity removal box and the secondary impurity removal box, whereby the rotary shaft Can drive the rotation of the two impurity removal boxes, and the two impurity removal boxes can be rotated with respect to the rotation axis. When the primary impurity removal box rotates, the first friction plate causes the first impurity removal box to rotate. The second friction plate and the second impurity removal box to reduce the friction resistance of the first friction plate. Is larger than the friction resistance of the second friction plate, the rotation angle of the secondary impurity removal box is larger than the rotation angle of the primary impurity removal box. At this time, the arc-shaped elastic rod in the secondary impurity removal box rotates the filtration module. , So that the filtration module comes into contact with the outer wall of the primary impurity removal box and the rotation speed of the secondary impurity removal box is high, so that the filtration module is located on the filter module side between the primary impurity removal box and the secondary impurity removal box. The volume of the first cavity is reduced, so that the waste liquid applies thrust to the pressure valve in the primary impurity removal box, and when the thrust exceeds the rated value of the pressure valve, the filtration module filters the waste liquid after filtration into the primary impurities. At the same time as it is introduced into the removal box, the controller removes impurities inside the primary impurity removal box. The module is operated, the solid-liquid separation operation is performed, the separated waste liquid is stored inside the primary impurity removal box, and the second cavity of the other side between the primary impurity removal box and the secondary impurity removal box is stored. Since the volume is large, the waste liquid after separation is extracted from the inside of the primary impurity removal box, the amount of waste liquid inside the second cavity is increased, and then the control device controls the motor to reverse so that the primary impurity removal box Each of the secondary impurity removal boxes rotates in the opposite direction, and at this time, the waste liquid inside the second cavity is introduced into the secondary impurity removal box through the pressure valve in the secondary impurity removal box, and then the secondary impurities are removed. When the impurity removal module inside the removal box removes impurities and the secondary impurity removal box returns, the buffer spring is The pure matter removal box is decelerated, the first solenoid valve and the second solenoid valve are in the facing position, and the control device controls the simultaneous opening of the first solenoid valve and the second solenoid valve, and the inside of the secondary impurity removal box is controlled. The clean sulfuric acid waste liquid after separation of the wastewater is introduced into the recovery treatment box to deeply purify the waste liquid and then collected, whereby the sulfuric acid waste liquid is purified to remove impurities. Impurities are removed multiple times from the waste liquid to effectively improve the efficiency of removing impurities from the sulfuric acid waste liquid, and at the same time, when the secondary impurity removal box rotates in the reverse direction, the gap between the filtration module and the primary impurity removal box is increased. Increase the size and introduce the waste liquid into the gap between the two, and when the motor is rotating the primary impurity removal box and the secondary impurity removal box back and forth, the flow of the waste liquid causes a filtration module. Can be washed away Le, avoiding clogging of the filtration module, therefore, it is possible to effectively improve the working efficiency of the filtration module.

Preferably, the filtration module includes a filtration plate, a first filtration hole and a second filtration hole, the filtration plate being hinged to an outer wall of the primary impurity removal box, and a plurality of first filtration holes at one end of the filtration plate. 1 filtering hole is provided, a plurality of second filtering holes are provided at the other end of the filtering plate, and the first filtering hole and the second filtering hole are both tapered and The pore diameter is larger than the pore diameter of the second filtration hole.

When the gap between the filter plate and the primary impurity removal box becomes narrow during operation, the waste liquid between them collides with the first filter hole and the second filter hole, and at the same time, the first filter hole and the second filter hole. Since the pore size of the filter is different, the flow of the waste liquid between the filter plate and the primary impurity removal box can be accelerated, and clogging of the first and second filtration holes can be avoided by the waste liquid whose flow is accelerated. This is advantageous for improving the filtration efficiency of the plate.

Preferably, a baffle is fixed at a position of a larger end corresponding to the second filtration hole on the side closer to the primary impurity removal box of the filtration plate, and the baffle collects the waste liquid introduced through the first filtration hole. Used for shunting.

In operation, when the waste liquid is first introduced through the first filtration hole into the gap between the filter plate and the primary impurity removal box, the speed of the waste liquid introduced at the smaller end of the first filtration hole is increased. When the waste liquid flows between the filter plate and the primary impurity removal box, the waste liquid collides with the baffle, and a part of the waste liquid flows along the baffle toward the second filtration hole and collides with the second filtration hole. While the filter holes are communicated to improve the filtration efficiency of the filter plate, other part of the waste liquid collides with the outer wall of the primary impurity removal box, thereby cleaning the outer wall of the primary impurity removal box, and thus the primary impurity removal box. Solid impurities adhering to the outer wall of the removal box are desorbed, which helps improve the efficiency of impurity removal and purification.

Preferably, the impurity removal module includes an electric push rod, a fixed plate , a slide type filter plate, and a distance sensor, the number of the fixed plates is two, and each of the two fixed plates is a primary impurity removal box. Of the second end of the secondary plate for removing the secondary impurities, an electric push rod is attached to one side of the top of the fixing plate, and an output end of the electric push rod is attached. Is pierced through the fixed plate, a slide type filter plate is arranged on the other side of the fixed plate, and one side of the slide type filter plate is fixed to the output end of the electric push rod. Is two, and the two slide type filter plates slide inside the primary impurity removal box and the secondary impurity removal box, respectively, and the slide type filter plate is in the waste liquid. The solid impurities are used for filtering.

In operation, when the electric push rod drives and moves the slide type filter plate, the volume of the cavity between the slide type filter plate and the fixed plate is reduced, and the waste liquid is discharged from the circular hole in the slide type filter plate. At this time, the solid impurities in the waste liquid were deposited between the slide type filtration plate and the fixed plate after filtering through the circular holes, and the distance between the slide type filtration plate and the fixed plate was gradually reduced and accumulated. The solid impurities are pressed, and therefore, the waste liquid contained in the solid impurities is pushed out and then discharged from the drain port, whereby the waste liquid and the solid impurities can be sufficiently separated, and the efficiency of removing the impurities from the waste liquid is improved. At the same time, it is easy to collect solid impurities after extrusion drying, and the cleaning efficiency of solid impurities is improved.

Preferably, the fixed plate is further provided with a distance sensor, the bottom of the fixed plate is provided with a control door, and the distance sensor measures the distance between the adjacent fixed plate and the slide type filtration plate. Used for.

In operation, when the slide filter moves in the direction close to the adjacent fixed plate, the distance sensor measures the distance between the slide filter and the fixed plate, and when the distance becomes the minimum, the control device controls. The door is controlled to be opened momentarily, and the pressed solid impurities are then collected through the open control door on one side of the fixed plate, away from the sliding filter plate, and then the controller is Controlling the closing of the control door, both the primary impurity removal box and the secondary impurity removal box are equipped with a sealed door, and the sealed door is used to clean the pressed solid impurities, thus pressing the solid impurities. The solid impurities can be collected, which helps to reduce the content of the solid impurities in the waste liquid, and effectively improves the efficiency of the waste liquid purification and the impurity removal.

Preferably, a buffer spring is further provided, and one end of the buffer spring contacts an outer wall of the secondary impurity removal box, the buffer spring is in a compressed state in the initial position, and the buffer spring includes the secondary impurity removal box. Used to slow down.

In operation, if the motor rotates in the forward direction, the rotation shaft drives the rotation of the secondary impurity removal box to remove impurities from the waste liquid.When the motor reverses, the secondary impurity removal box is gradually rotated to its original position. , At this time, the buffer spring is in a natural state, and if the secondary impurity removal box continues to rotate, one end of the buffer spring comes into contact with the outer wall of the secondary impurity removal box, and the buffer spring impacts the secondary impurity removal box. , Thereby slowing the secondary impurity removal box before it completely returns, thereby stabilizing the return of the secondary impurity removal box and reducing the wear between the secondary impurity removal box and the rotating shaft. , Extend the service life of the secondary impurity removal box and rotating shaft.

Beneficial effect

1. In the present invention, since the friction resistance between the first friction plate and the second friction plate is different, the rotation angles of the primary impurity removal box and the secondary impurity removal box are made different, and the two impurity removal boxes are differentially rotated. , The motor is used to reciprocally rotate the two impurity removal boxes, thereby performing intelligent multiple removal of impurities in the sulfuric acid waste liquid in the filtration box, effectively improving the efficiency of removing impurities in the sulfuric acid waste liquid. be able to.

2. In the present invention, by using in combination with the first filtration hole and the second filtration hole of the filter plate, the flow of the waste liquid between the filter plate and the primary impurity removal box is accelerated, and the flow is made by using the baffle. The accelerated waste liquid is subjected to a diversion process to help improve the filtration efficiency of the filter plate, and by using a slide type filter plate and a fixed plate in combination, it helps to push out the waste liquid contained in solid impurities, The liquid separation efficiency is improved, the removal efficiency of impurities in the waste liquid is improved, the solid impurities after pressing and drying are easily collected, and the cleaning efficiency of solid impurities is improved.

3. In the present invention, the distance sensor is used to detect the distance between the fixed plate and the slide-type filtration plate, whereby the control device controls the opening of the control door after sufficiently pressing the solid impurities to remove the solid impurities. Collected, which effectively improves the purification of waste liquid and the removal efficiency of impurities by reducing the content of solid impurities in the waste liquid, and also utilizes the buffer spring for the secondary impurity removal box. Buffering, thereby slowing down before the secondary impurity removal box completely returns, thereby stabilizing the return of the secondary impurity removal box 5 and reducing the wear between the secondary impurity removal box and the rotating shaft. , Extend the service life of the secondary impurity removal box and rotating shaft.

The present invention will be further described below with reference to the drawings.

FIG. 3 is a front view of the present invention.

FIG. 2 is a schematic cross-sectional view taken along the line AA of FIG.

FIG. 3 is a partially enlarged schematic view of part B of FIG.

It is a direction view of part C in Figure 2.

In the figure, a base 1, a filtration box 2, a solenoid valve 21, a rotary shaft 22, a motor 23, a controller 24, a water pump 25, a first friction plate 26, a second friction plate 27, a recovery processing box 3, and a primary impurity removal box. 4, secondary impurity removal box 5, arc-shaped elastic rod 51, second electromagnetic valve 52, plastic seal film 6, buffer spring 7, impurity removal module 8, electric push rod 81, fixed plate 82, control door 821 The slide type filter plate 83, the distance sensor 84, the filter module 9, the filter plate 91, the first filter hole 911, the second filter hole 912, and the baffle 913.

In order to make it easy to understand the technical means, creative characteristics, achievement goals and effects achieved by the present invention, the present invention will be further described below in connection with specific embodiments.

1 to 4, an intelligent purification and recovery device for sulfuric acid, which includes a base 1, a filtration box 2, a primary impurity removal box 4, a secondary impurity removal box 5, and a recovery treatment box. 3, the filtration box 2 and the recovery processing box 3 are disposed on both sides of the top of the base 1, respectively, and a first electromagnetic valve 21 is provided between the filtration box 2 and the recovery processing box 3. In communication, the inside of the filtration box 2 is rotatably connected to the rotary shaft 22 at the vertical center line, and the first friction plate 26 and the second friction plate 27 are disposed on the inner wall of the filtration box 2 for the filtration. A control device 24 is mounted on the top of the box 2, and a motor 23 is also mounted on the top of the filtration box 2, and the motor 23 is transmission-connected to the rotary shaft 22 for the filtration. A water pump 25 is also provided at the bottom of the box 2, the first friction plate 26 and the second friction plate 27 are arranged symmetrically with respect to the vertical center line of the filtration box 2, and the rotary shaft 22 is provided with primary impurities removed. A box 4 and a secondary impurity removal box 5 are provided, and the cross sections of the primary impurity removal box 4 and the secondary impurity removal box 5 are fan-shaped structures, and the larger end of the primary impurity removal box 4 is provided. An impurity removal module 8 is provided both inside the portion and inside the smaller end of the secondary impurity removal box 5, and the smaller end of the primary impurity removal box 4 and the secondary impurity removal box 5 is provided. A seal film 6 made of plastic is provided between the same side of the above, and both the primary impurity removal box 4 and the secondary impurity removal box 5 are provided. The pressure valve used for the body supply is provided,

The primary impurity removal box 4 is arranged at the position of the first friction plate 36, and the outer wall of the larger end of the primary impurity removal box 4 contacts the first friction plate 26, 4, a filtration module 9 is hingedly connected to one side wall, and the primary impurity removal box 4 is provided with a check valve used for discharging liquid.

The secondary impurity removal box 5 is disposed at the position of the second friction plate 27, and the outer wall of the larger end of the secondary impurity removal box 5 contacts the second friction plate 27, A second solenoid valve 52 is provided on the inner wall of the larger end of the secondary impurity removal box 5, and an arcuate elastic rod 51 is fixed to a position near the filtration module 9 outside the secondary impurity removal box 5. One end of the arc-shaped elastic rod 51 is fixed to the filtration module 9, and the first electromagnetic valve 21 and the second electromagnetic valve 52 are in the facing position when in the initial position.

In operation, first, an appropriate amount of sulfuric acid waste liquid is introduced into the inside of the filtration box 2 by the water pump 25, and then the control device 24 operates the motor 23 so that the normal rotation and the reverse rotation are switched. When rotated, the motor 23 drives the rotation of the primary impurity removal box 4 and the secondary impurity removal box 5 via the rotation shaft 22 to connect the rotation shaft 22 to the primary impurity removal box 4 and the secondary impurity removal box 5. In position a friction strip is provided, by means of which the rotary shaft 22 can drive the rotation of the two impurity removal boxes, and the two impurity removal boxes can be rotated with respect to the rotary shaft 22 to remove the primary impurity removal. When the box 4 rotates, the first friction plate 26 decelerates the primary impurity removal box 4 and the second friction plate 26 7, the secondary impurity removal box 5 is decelerated, and the frictional resistance of the first friction plate 26 is larger than the frictional resistance of the second friction plate 27. Therefore, the rotation angle of the secondary impurity removal box 5 is the rotation of the primary impurity removal box 4. The arc-shaped elastic rod 51 of the secondary impurity removal box 5 which is larger than the angle pushes the rotation of the filtration module 9, so that the filtration module 9 contacts the outer wall of the primary impurity removal box 4 and the secondary impurity removal box 4. Since the rotation speed of 5 is high, the volume of the first cavity located on the side of the filtration module 9 between the primary impurity removal box 4 and the secondary impurity removal box 5 becomes small, whereby the waste liquid becomes the primary impurity removal box 4 When a thrust force is applied to the pressure valve in the above, and the thrust force exceeds the rated value of the pressure valve, the filtration module 9 removes the primary waste from the waste liquid after filtration. At the same time when the waste liquid is introduced into the box 4, the controller 24 operates the impurity removal module 8 inside the primary impurity removal box 4 to perform the solid-liquid separation work, and the separated waste liquid is introduced into the primary impurity removal box 4. Since the volume of the second cavity which is stored and on the other side between the primary impurity removal box 4 and the secondary impurity removal box 5 is large, the separated waste liquid is extracted from the inside of the primary impurity removal box 4, The amount of waste liquid inside the cavity becomes large, and then the control device 24 controls the motor 23 so as to reverse the rotation, so that both the primary impurity removal box 4 and the secondary impurity removal box 5 rotate in the reverse direction, and at this time, the second The waste liquid inside the cavity is introduced into the secondary impurity removal box 5 through the pressure valve in the secondary impurity removal box 5, and then the secondary impurities are removed. Impurities are removed by the impurity removal module 8 inside the pure substance removal box 5, and when the secondary impurity removal box 5 returns, the buffer spring 7 decelerates the secondary impurity removal box 5 and the first solenoid valve 21 and the first electromagnetic valve 21. The 2 solenoid valve 52 is in the front facing position, and the controller 24 controls the simultaneous opening of the 1st solenoid valve 21 and the 2nd solenoid valve 52 to remove the clean sulfuric acid waste liquid after separation inside the secondary impurity removal box 5. The waste liquid is introduced into the recovery treatment box 3 to be deeply purified and then collected, whereby the sulfuric acid waste liquid is purified to remove impurities, and thus the sulfuric acid waste liquid in the filtration box 2 is subjected to multiple removal of impurities. When the secondary impurity removal box 5 is rotating in the reverse direction, the filtration module 9 and the primary impurity removal box are simultaneously improved. When the primary impurity removal box 4 and the secondary impurity removal box 5 are reciprocatingly rotated by the motor 23 by the motor 23, the waste liquid is filtered by the flow of the waste liquid. The module 9 can be washed away, the clogging of the filtration module 9 can be avoided, and thus the working efficiency of the filtration module 9 can be effectively improved.

The filtration module 9 includes a filtration plate 91, a first filtration hole 911, and a second filtration hole 912. The filtration plate 91 is hinge-connected to the outer wall of the primary impurity removal box 4 and has one end thereof. Are provided with a plurality of first filtration holes 911, and a plurality of second filtration holes 912 are provided at the other end of the filtration plate 91. Both the first filtration holes 911 and the second filtration holes 912 are tapered. The diameter of the first filtration hole 911 is larger than the diameter of the second filtration hole 912.

When the gap between the filter plate 91 and the primary impurity removal box 4 becomes narrow during operation, the waste liquid between them collides with the first filter hole 911 and the second filter hole 912, and at the same time with the first filter hole 911. Since the diameters of the second filtration holes 912 are different, the flow of the waste liquid between the filter plate 91 and the primary impurity removal box 4 is accelerated, and the waste liquid whose flow has been accelerated accelerates the flow of the first filtration hole 911 and the second filtration hole 912. Clogging can be avoided, which is advantageous for improving the filtration efficiency of the filter plate 91.

A baffle 913 is fixed to a position of a larger end corresponding to the second filtration hole 912 on one side near the primary impurity removal box 4 of the filtration plate 91, and the baffle 913 is introduced through the first filtration hole 911. It is used to divert waste liquid.

In operation, when the waste liquid is first introduced into the gap between the filter plate 91 and the primary impurity removal box 4 through the first filtration hole 911, it is introduced at the smaller end of the first filtration hole 911. When the waste liquid flows between the filter plate 91 and the primary impurity removal box 4, it collides with the baffle 913, and a part of the waste liquid flows toward the second filtration hole 912 along the baffle 913. , The second filtration hole 912 is collided, the second filtration hole 912 is communicated to improve the filtration efficiency of the filter plate 91, and another part of the waste liquid collides with the outer wall of the primary impurity removal box 4, Cleans the outer wall of the primary impurity removal box 4, and thus the solid impurities adhering to the outer wall of the primary impurity removal box 4 are desorbed, which helps improve the efficiency of impurity removal and purification.

The impurity removing module 8 includes an electric push rod 81, a fixed plate 82, a slide type filter plate 83, and a distance sensor 84. The number of the fixed plates 82 is two, and the two fixed plates are primary impurities. The electric push rod 81 is attached to one side of the top of the fixing plate 82, which is disposed inside the larger end of the removal box 4 and inside the smaller end of the secondary impurity removal box 5, respectively. An output end of the electric push rod 81 penetrates the fixed plate 82, and a slide type filter plate 83 is arranged on the other side of the fixed plate 82. One side of the slide type filter plate 83 has an output of the electric push rod 81. The number of the slide type filter plates 83 fixed to the end is two, and the two slide type filter plates 83 are respectively the primary impurity removing box 4 and the secondary impurity removing box. Slide the internal scan 5, sliding the filter plate 83 is used to filter solid impurities in the effluent.

When the electric push rod 81 drives and moves the slide type filter plate 83 during operation, the volume of the cavity between the slide type filter plate 83 and the fixed plate 82 is reduced, and the waste liquid is stored in the slide type filter plate 83. The solid impurities in the waste liquid are discharged from the circular holes, and at this time, the solid impurities in the waste liquid are deposited between the slide type filter plate 83 and the fixed plate 82 after being filtered by the circular holes, and the solid impurities of the slide type filter plate 83 and the fixed plate 82 are accumulated. The distance between them gradually decreases to press the deposited solid impurities, and therefore, the waste liquid contained in the solid impurities can be pushed out and then discharged from the drain port, thereby sufficiently separating the waste liquid and the solid impurities. Therefore, the removal efficiency of impurities in the waste liquid is improved, and the solid impurities after extrusion and drying are easily collected, and the cleaning efficiency of the solid impurities is improved.

A distance sensor 84 is further provided on the fixed plate 82, a control door 821 is provided on the bottom of the fixed plate 82, and the distance sensor 84 is a distance between the adjacent fixed plate 82 and the slide type filtration plate 83. Used to measure.

In operation, when the slide filter plate 83 moves in the direction close to the adjacent fixed plate 82, the distance sensor 84 measures the distance between the slide filter plate 83 and the fixed plate 82, and when the distance becomes the minimum. The control device 24 controls the control door 821 to open momentarily, and at this time, the pressed solid impurities are separated from the slide filter plate 83 of the fixed plate 82 via the opened control door 821. Then, the control device 24 controls the closing of the control door 821, and both the primary impurity removal box 4 and the secondary impurity removal box 5 are provided with sealing doors, which are pressed using the sealing doors. The collected solid impurities can be cleaned and the pressed solid impurities can be collected in this way, helping to reduce the content of solid impurities in the waste liquid, and improving the efficiency of waste liquid purification and impurity removal. Improve on.

One end of the buffer spring 7 contacts the outer wall of the secondary impurity removal box 5, the buffer spring 7 is in a compressed state when in the initial position, and the buffer spring 7 is for decelerating the secondary impurity removal box 5. used.

In operation, when the motor 23 rotates normally, the rotation shaft 22 drives the rotation of the secondary impurity removal box 5 to remove impurities in the waste liquid, and when the motor 23 reverses, the secondary impurity removal box 5 is gradually removed. The buffer spring 7 is in the natural state at this time, and if the secondary impurity removal box 5 continues to rotate, one end of the buffer spring 7 contacts the outer wall of the secondary impurity removal box 5 and the buffer spring 7 7 damps the impact on the secondary impurity removal box 5, thereby slowing down the secondary impurity removal box 5 before returning completely, thereby stabilizing the return of the secondary impurity removal box 5, The wear between the removal box 5 and the rotary shaft 22 is reduced, and the service life of the secondary impurity removal box 5 and the rotary shaft 22 is extended.

In operation, first, an appropriate amount of sulfuric acid waste liquid is introduced into the inside of the filtration box 2 by the water pump 25, and then the control device 24 operates the motor 23 so that the normal rotation and the reverse rotation are switched. When rotated, the motor 23 drives the rotation of the primary impurity removal box 4 and the secondary impurity removal box 5 via the rotation shaft 22 to connect the rotation shaft 22 to the primary impurity removal box 4 and the secondary impurity removal box 5. In position a friction strip is provided, by means of which the rotary shaft 22 can drive the rotation of the two impurity removal boxes, and the two impurity removal boxes can be rotated with respect to the rotary shaft 22 to remove the primary impurity removal. When the box 4 rotates, the first friction plate 26 decelerates the primary impurity removal box 4 and the second friction plate 26 7, the secondary impurity removal box 5 is decelerated, and the frictional resistance of the first friction plate 26 is larger than the frictional resistance of the second friction plate 27. Therefore, the rotation angle of the secondary impurity removal box 5 is the rotation of the primary impurity removal box 4. The arc-shaped elastic rod 51 in the secondary impurity removal box 5 that is larger than the angle pushes the rotation of the filtration module 9, so that the filtration module 9 contacts the outer wall of the primary impurity removal box 4 and the secondary impurity removal box 5 Since the rotational speed of the first cavity is high, the volume of the first cavity located on the side of the filtration module 9 between the primary impurity removal box 4 and the secondary impurity removal box 5 becomes small, whereby the waste liquid is stored in the primary impurity removal box 4. When a thrust force is applied to the pressure valve and the thrust force exceeds the rated value of the pressure valve, the filtration module 9 removes the waste liquid after filtration from the primary impurity removal button. At the same time as it is introduced into the box 4, the controller 24 operates the impurity removal module 8 inside the primary impurity removal box 4 to perform the solid-liquid separation work, and the separated waste liquid is introduced into the primary impurity removal box 4. The volume of the second cavity on the other side between the primary impurity removal box 4 and the secondary impurity removal box 5 that has been stored is increased, and the waste liquid after separation is extracted from the inside of the primary impurity removal box 4 to The amount of waste liquid inside the cavity increases, and subsequently the control device 24 controls the motor 23 to reverse the rotation, and both the primary impurity removal box 4 and the secondary impurity removal box 5 rotate in the opposite direction. The waste liquid inside the two cavities is introduced into the secondary impurity removal box 5 via the pressure valve in the secondary impurity removal box 5, and then the secondary impurity is removed. Impurities are removed by the impurity removal module 8 inside the object removal box 5, and when the secondary impurity removal box 5 returns, the buffer spring 7 decelerates the secondary impurity removal box 5, and the first solenoid valve 21 and the second electromagnetic valve 21 The solenoid valve 52 is in the front facing position, and the controller 24 controls the simultaneous opening of the first solenoid valve 21 and the second solenoid valve 52 to remove the clean sulfuric acid waste liquid after separation inside the secondary impurity removal box 5. The waste liquid is introduced into the recovery treatment box 3 to be deeply purified and then recovered, whereby the sulfuric acid waste liquid is subjected to a refining operation for removing impurities, and thus the sulfuric acid waste liquid in the filtration box 2 is subjected to multiple removal of impurities. , The efficiency of removing impurities from the sulfuric acid waste liquid is effectively improved, and at the same time, when the secondary impurity removal box 5 is rotating in the reverse direction, the filtration module 9 and the primary impurity removal box are 4 is enlarged, the waste liquid is introduced into the gap between the two, and when the motor 23 reciprocally rotates the primary impurity removal box 4 and the secondary impurity removal box 5, the flow of the waste liquid causes a filtration module. 9 can be washed away.

The foregoing illustrates and describes the basic principles, main features and advantages of the present invention. For those skilled in the art, the present invention is not limited to the above-described embodiments, and the above-described embodiments and the description in the specification are only for explaining the principle of the present invention, and do not limit the spirit and scope of the present invention. It should be understood that various changes and modifications can be made to the present invention without departing from it. The protection scope of the present invention is defined by the appended claims and their equivalents.

Claims (6)

An intelligent purification and recovery device for sulfuric acid, comprising a base (1), a filtration box (2), a primary impurity removal box (4), a secondary impurity removal box (5), and a recovery treatment box (3). ), The filtration box (2) and the recovery treatment box (3) are disposed on both sides of the top of the base (1), respectively, and between the filtration box (2) and the recovery treatment box (3). To the inner wall of the filtration box (2), the interior of the filtration box (2) being rotatably connected to the rotary shaft (22) at the vertical center line. Has a first friction plate (26) and a second friction plate (27), a controller (24) is attached to the top of the filtration box (2), and a motor is also attached to the top of the filtration box (2). (23) installed The motor (23) is transmission-connected to the rotary shaft (22), and a water pump (25) is provided at the bottom of the filtration box (2), and the first friction plate (26) and the second friction plate are provided. (27) are arranged symmetrically with respect to the vertical midline of the filtration box (2), and the rotating shaft (22) is provided with a primary impurity removal box (4) and a secondary impurity removal box (5). The cross sections of the primary impurity removal box (4) and the secondary impurity removal box (5) are both fan-shaped, and the inside of the larger end of the primary impurity removal box (4) and the secondary impurity removal are removed. An impurity removal module (8) is provided inside each of the smaller ends of the box (5), and the smaller ends of the primary impurity removal box (4) and the secondary impurity removal box (5) are provided. Between the same side Both provided plastic seal film (6) are both pressure valve used is provided for the liquid supply to the primary impurity removal box (4) and the secondary impurities removing box (5),
The primary impurity removal box (4) is arranged at the position of the first friction plate (26), and the outer wall of the larger end of the primary impurity removal box (4) is aligned with the first friction plate (26). In contact, a filtration module (9) is hinged to one sidewall of the primary impurity removal box (4), and the primary impurity removal box (4) is provided with a check valve used for discharging liquid,
The secondary impurity removal box (5) is disposed at the position of the second friction plate (27), and the outer wall of the larger end of the secondary impurity removal box (5) has the second friction plate (5). 27), a second solenoid valve (52) is provided on the inner wall of the larger end of the secondary impurity removal box (5), and a filtration module (outer side of the secondary impurity removal box (5) is provided. An arc-shaped elastic rod (51) is fixed to a position close to 9), one end of the arc-shaped elastic rod (51) is fixed to the filtration module (9), and the first electromagnetic valve (21) and the The second solenoid valve (52) is in the facing position when in the initial position ,
Sulfuric acid characterized in that the friction resistance of the first friction plate (26) in contact with the primary impurity removal box (4) and the friction resistance of the second friction plate (27) in the secondary impurity removal box (5) are different. Intelligent refining and recovery equipment for. The filtration module (9) includes a filtration plate (91), a first filtration hole (911) and a second filtration hole (912), and the filtration plate (91) is an outer wall of the primary impurity removal box (4). And a plurality of first filtration holes (911) are provided at one end of the filtration plate (91), and a plurality of second filtration holes (912) are provided at the other end of the filtration plate (91). The first filtration hole ( 911 ) and the second filtration hole (912) are both tapered, and the diameter of the first filtration hole (911) is larger than the diameter of the second filtration hole (912). An intelligent purification and recovery device for sulfuric acid according to claim 1, characterized in that. A baffle (913) is fixed to each of the positions of the larger ends corresponding to the second filtration holes (912) on the side closer to the primary impurity removal box (4) of the filtration plate (91), and the baffles (913) are fixed. 3.) An intelligent purification and recovery device for sulfuric acid according to claim 2, characterized in that) is used for diversion treatment of the waste liquid introduced in the first filtration hole (911). The impurity removal module (8) includes an electric push rod (81), a fixed plate (82), a slide type filter plate (83), and a distance sensor (84), and the number of the fixed plate (82) is two. And the two fixing plates are respectively arranged inside the larger end of the primary impurity removal box (4) and inside the smaller end of the secondary impurity removal box (5), An electric push rod (81) is attached to one side of the top of the plate (82), the output end of the electric push rod (81) penetrates the fixed plate (82), and the other side of the fixed plate (82). A slide type filter plate (83) is arranged in the inner side of the slide type filter plate. One side of the slide type filter plate (83) is fixed to the output end of the electric push rod (81), and the number of the slide type filter plate (83) is two. It is a sheet and before two sheets Sliding filter plate (83) slides inside primary impurity removing box (4) and secondary impurity removing box (5) respectively, and sliding filter plate (83) is used to filter solid impurities in the waste liquid. An intelligent purification and recovery device for sulfuric acid according to claim 1, characterized in that A distance sensor (84) is further provided on the fixed plate (82), a control door (821) is provided on the bottom of the fixed plate (82), and the distance sensor (84) is adjacent to the fixed plate (82). 5.) Intelligent refining and recovery device for sulfuric acid according to claim 4, characterized in that it is used for measuring the distance between the) and the sliding filter plate (83). Furthermore, a buffer spring (7) is provided, one end of the buffer spring (7) contacts the outer wall of the secondary impurity removal box (5), and the buffer spring (7) is in a compressed state when in an initial position, Intelligent refining and recovery device for sulfuric acid according to claim 1, characterized in that a buffer spring (7) is used for slowing down the secondary impurity removal box (5).