Filter pressing treatment device for preparing sodium tungstate solution

Abstract

The invention relates to the technical field of sodium tungstate solution filtration, in particular to a filter pressing treatment device for sodium tungstate solution preparation, which comprises a case, a box body with an open bottom is arranged in the case, a barrel with an open bottom is connected to the top of the inner side of the box body, and an extrusion mechanism for extruding filter residues is arranged in the barrel. An electric rotating shaft located below the box body is arranged on the machine box, a pressure-bearing frame located in the machine box is connected to the electric rotating shaft, and filtering assemblies used for filtering slag and a sodium tungstate solution are arranged on the periphery of the outer portion of the pressure-bearing frame. The pressure-bearing frame can be driven to rotate through the electric rotating shaft, so that the empty filter screen and the filter cloth are rotated to face upwards, and the filter screen and the filter cloth which intercept filter residues are rotated to face downwards, the filter residues do not need to be cleaned by shutdown, the interruption of slag filtering treatment work is avoided, the slag filtering treatment work can be continuously performed, and the filtering efficiency of a sodium tungstate solution is improved.

Description

Technical Field

[0001] The invention relates to the technical field of sodium tungstate solution filtration, in particular to a filter press treatment device for preparing a sodium tungstate solution. Background Art

[0002] In the process of tungsten extraction, tungsten ore must first be converted into calcium tungstate by calcination. Subsequently, calcium tungstate is reacted with alkaline substances to form sodium tungstate. Since tungsten ore contains a variety of slag impurities, the generated sodium tungstate solution also contains a lot of impurities. In order to ensure the smooth progress of subsequent reactions and improve the purity of the final product, the sodium tungstate solution must be effectively filtered to remove slag.

[0003] The patent with patent announcement number CN210448256U discloses a sodium tungstate solution filter press, which includes a solution tank, a filter tank, a feeding mechanism, a filter pressing mechanism and an extrusion mechanism. The solution tank includes a solution tank body and a discharge port, and the discharge port is arranged directly below the solution tank body. The filter tank includes a filter tank body, a filter hole and a pillar. The filter hole is arranged on the surface of the filter tank. The pillar is connected to the bottom of the solution tank body, and the pillar supports and connects the filter tank. The feeding mechanism includes a feeding pipe and a telescopic pipe, and the upper end of the telescopic pipe is connected to the feeding pipe. The filter pressing mechanism includes a filter press plate, a one-way valve and a filter press bag. The filter press plate is connected to the filter press bag, and the one-way valve is arranged on the filter press plate. The extrusion mechanism includes a cylinder and an air pipe. The cylinder is fixed to the top of the solution tank and directly passes through the filter press plate and is connected to the filter press plate. The air pipe is connected to the cylinder.

[0004] Although the above patent can filter the sodium tungstate solution, the following defects exist in actual use: the filter plate descends to pressurize the filter bag to filter and squeeze out the sodium tungstate solution in the filter bag, and the mineral residue produced after the filtration is compressed into a filter cake and retained in the filter tank. As the filtration operation continues, the gradually accumulated filter cakes will be stacked and attached to the inner wall of the filter bag. The accumulation of filter residues will cause the filter holes on the filter bag to be gradually blocked, reducing the effective filtration area, thereby reducing the filtration speed and efficiency. Although the filter bag can be replaced manually to ensure the filtration efficiency, when the filter residue accumulates seriously, it may be necessary to shut down for thorough cleaning, resulting in production interruption. In addition, the filter bag needs to be replaced frequently, increasing maintenance costs. The filter residue accumulated for a long time may also harden, making it more difficult to remove the filter bag, further increasing the loading and unloading time. Summary of the invention

[0005] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a filter press treatment device for preparing a sodium tungstate solution which can continuously perform slag filtration treatment and automatically clean the filter residue.

[0006] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a filter press processing device for preparing sodium tungstate solution, comprising a chassis, a door is hinged on the right side of the chassis, a box body with an open bottom is arranged in the chassis, a cylinder with an open bottom is connected to the top of the inner side of the box body, an extrusion mechanism for extruding filter residue is arranged in the cylinder body, a drain pipe extending out of the chassis is connected to the lower part of the box body, an injection pipe extending out of the chassis is connected to the upper part of the cylinder body, a solenoid valve is installed at the lower part of the injection pipe, and a valve located below the box body is provided on the chassis. An electric rotating shaft is connected to the electric rotating shaft, and a pressure frame located in the chassis is connected to the electric rotating shaft. Filter components for filtering slag and sodium tungstate solution are arranged around the outside of the pressure frame, and the four filter components are distributed in a ring shape. A circular frame is arranged below the pressure frame in the chassis, and a knocking mechanism for knocking the filter cake is arranged on the circular frame. A driving mechanism for driving the circular frame and the box body to rise and fall is arranged in the chassis. When the driving mechanism drives the circular frame to move upward, the box body moves down to the pressure frame. When the driving mechanism drives the circular frame to move downward, the box body moves up and separates from the pressure frame.

[0007] Preferably, the pressure frame includes a frame body connected to the electric rotating shaft, the outside of the frame body is connected with surrounding frames matching the box body, the four surrounding frames are distributed in a ring shape, the outside of the frame body is opened with accommodating grooves for accommodating the drainage pipe, and the surrounding frames are opened with through grooves for the drainage pipe to be raised and lowered.

[0008] Preferably, the filter assembly includes a sealing ring connected to the outside of the frame, the sealing ring matches the cylinder, a liquid discharge port is opened on the sealing ring, a filter screen is connected to the outside of the frame, the filter screen is located inside the sealing ring, and a detachable filter cloth is connected to the filter screen.

[0009] Preferably, the knocking mechanism includes two left and right sliding blocks slidably connected in the circular frame, an inverted U-shaped mounting plate is connected between the tops of the two sliding blocks, an electric screw is provided on the right side of the circular frame, the screw on the electric screw is threadedly connected to the right sliding block, a lifting plate 1 is provided on the inverted U-shaped mounting plate, a knocking rod for knocking the filter cake is connected at intervals on the lifting plate 1, the top of the knocking rod passes through the top of the inverted U-shaped mounting plate, a spring 1 is connected between the top of the lifting plate 1 and the top of the inner side of the inverted U-shaped mounting plate, the left and right sides of the inverted U-shaped mounting plate are rotatably connected to a gear shaft located on the lower side of the lifting plate, a cam is connected to the shaft of the gear shaft, the cam contacts the bottom of the lifting plate 1, and the left and right sides of the top of the circular frame are connected to racks, and the two racks are respectively meshed with gears on the two gear shafts.

[0010] Preferably, the driving mechanism includes a guide rod 1 connected to the inner bottom of the chassis, a circular frame is slidably connected to the guide rod 1, a rodless cylinder is installed at the inner bottom of the chassis, the slider of the rodless cylinder is connected to the circular frame, a guide rod 2 is connected to the inner top of the chassis, a lifting block is slidably connected to the guide rod 2, the box body is connected to the lifting block, a fixed pulley is rotatably connected to the inner wall of the chassis, a pull rope is connected to the top of the circular frame, the pull rope passes around the fixed pulley and is connected to the top of the lifting block.

[0011] Preferably, the extrusion mechanism comprises a pressing plate slidably arranged in the cylinder, the top of the pressing plate is connected to an inverted U-shaped connecting plate, a hydraulic cylinder is installed on the top of the box, and the telescopic rod of the hydraulic cylinder extends into the cylinder and is connected to the inverted U-shaped connecting plate.

[0012] Preferably, a brush cleaning mechanism is provided on the pressure plate, and the brush cleaning mechanism includes an electric slide rail installed on the top of the pressure plate, and a lifting plate 2 is connected to the slider of the electric slide rail, and the electric slide rail and the lifting plate 2 are both located on the inner side of the inverted U-shaped connecting plate. A rotating shaft is rotatably connected to the lifting plate 2, and the bottom end of the rotating shaft passes through the pressure plate and is connected to a cleaning brush. A storage groove for accommodating the cleaning brush is opened at the bottom of the pressure plate, and a driving motor is installed on the top of the lifting plate 2, and the output shaft of the driving motor is connected to the rotating shaft. The bottom of the cleaning brush is connected to a lower plugging plate for sealing the storage groove, and the upper part of the rotating shaft is rotatably connected to an upper plugging plate for sealing the storage groove, and the upper plugging plate slides in cooperation with the storage groove.

[0013] Preferably, the cleaning brush includes a brush 1 connected to the bottom end of the rotating shaft, the left and right sides of the brush 1 are slidably connected to brush 2 through a sliding rod, a spring 2 is connected between the sliding rod and the brush 1, and a lower blocking plate is connected to the bottom of the brush 1.

[0014] Preferably, an air injection pipe for spraying gas upward onto the filter cloth is connected between the two sliding blocks.

[0015] The beneficial effects of the present invention have the following advantages compared with the prior art: 1. The pressure frame can be driven to rotate by the electric shaft to rotate the empty filter screen and filter cloth upward, and the filter screen and filter cloth with filter residue intercepted can be rotated downward. There is no need to stop the machine to clean the filter residue, which avoids the interruption of slag filtration treatment and can continue the slag filtration treatment, thereby improving the filtration efficiency of sodium tungstate solution.

[0016] 2. The knocking rod can be moved up and down to knock the filter cake that is rotated to the bottom, so as to break the filter cake at the bottom, so that the filter cake is broken and scattered and falls from the filter net, solving the problem that the compacted filter cake cannot fall off the filter net and is stuck, achieving the effect of automatically cleaning the filter residue, ensuring that the slag filtration treatment work can be carried out continuously, without the need to frequently replace the filter net and filter cloth, reducing maintenance costs.

[0017] 3. The bottom of the pressing plate can be cleaned by rotating the cleaning brush to clean the slag adhering to the bottom of the pressing plate, ensuring that the bottom of the pressing plate remains flat, thereby ensuring that the subsequent pressing plate applies uniform pressure to the slag during filtration, thereby improving the filtration efficiency of the sodium tungstate solution.

[0018] 4. The gas can be sprayed upward onto the filter cloth at the bottom through the air jet pipe to blow off the filter residue remaining on the filter cloth, improve the cleaning effect of the filter residue, ensure that the filter cloth maintains a good filtering effect, and prevent the filtration efficiency from decreasing due to the accumulation of filter residue. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0020] Figure 2 It is a partial three-dimensional structural schematic diagram of the present invention.

[0021] Figure 3 It is a schematic diagram of the three-dimensional structure of the pressure frame and the filter assembly of the present invention.

[0022] Figure 4 It is a schematic diagram of the three-dimensional structure of the filter assembly of the present invention.

[0023] Figure 5 It is a schematic diagram of the three-dimensional structure of the extrusion mechanism of the present invention.

[0024] Figure 6 It is a schematic diagram of the three-dimensional structure of the driving mechanism of the present invention.

[0025] Figure 7 It is a schematic diagram of the installation of the knocking mechanism and the air jet pipe of the present invention.

[0026] Figure 8 It is a three-dimensional structural schematic diagram of the knocking mechanism and the air injection pipe of the present invention.

[0027] Fig. 9 It is a three-dimensional structural schematic diagram of the cleaning mechanism of the present invention.

[0028] Fig.10 It is a schematic diagram of the three-dimensional structure of the cleaning brush of the present invention.

[0029] In the figure: 1-chassis, 2-chassis door, 3-electric shaft, 31-cloth cover, 4-pressure frame, 41-frame, 42-enclosing frame, 43-accommodating groove, 44-through groove, 5-chassis, 6-cylinder, 7-pressing plate, 71-storage groove, 8-hydraulic cylinder, 9-inverted U-shaped connecting plate, 10-drain pipe, 11-injection pipe, 12-solenoid valve, 13-sealing ring, 131-drain port, 14-filter screen, 15-filter cloth, 16-fastening bolt, 17-reciprocating frame, 181-guide rod 1, 182-rodless cylinder, 183-guide rod 2, 184-lifting block, 185-fixed pulley, 1 86-pull rope, 191-sliding block, 192-inverted U-shaped mounting plate, 193-electric screw, 194-lifting plate one, 195-beating rod, 196-spring one, 197-gear shaft, 198-rack, 199-cam, 20-jet pipe, 201-main pipe, 202-gas injection pipe, 203-branch pipe, 204-spray head, 21-electric slide rail, 22-lifting plate two, 23-driving motor, 24-cleaning brush, 241-brush one, 242-sliding rod, 243-brush two, 244-spring two, 25-lower blocking plate, 26-upper blocking plate, 27-rotating shaft. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] See also Figure 1-Figure 5A filter press processing device for preparing sodium tungstate solution comprises a chassis 1. The structure of the chassis 1 is divided into three parts. The upper part is square, the middle part is round, and the lower part is funnel-shaped with a discharge port. A door 2 that can be rotated upward to open is hinged in the middle of the right side of the chassis 1. A cloth cover 31 is connected to the bottom of the chassis 1. A box body 5 with an open bottom is arranged in the chassis 1. The bottom of the box body 5 is inclined in the front and the back. A cylinder 6 with an open bottom is connected to the top of the inner side of the box body 5. An extrusion mechanism for extruding filter residue is arranged in the cylinder 6. The extrusion mechanism comprises a pressing plate 7 slidably arranged in the cylinder 6. The top of the pressing plate 7 is connected to an inverted U-shaped connecting plate 9. The box A hydraulic cylinder 8 is installed on the top of the body 5, and the telescopic rod of the hydraulic cylinder 8 extends into the cylinder 6 and is connected to the inverted U-shaped connecting plate 9. The lower front side of the box body 5 is connected with a discharge pipe 10 extending out of the chassis 1. The discharge pipe 10 is a telescopic pipe. The upper front side of the cylinder 6 is connected with an injection pipe 11 extending out of the chassis 1. The upper part of the injection pipe 11 is a telescopic pipe, and the lower part is a hard pipe. The lower part of the injection pipe 11 is installed with a solenoid valve 12. The chassis 1 is provided with an electric shaft 3 located below the box body 5. The electric shaft 3 consists of a stepping motor and a shaft. The shaft is rotatably connected to the chassis 1. The stepping motor is installed on the outer wall of the rear side of the chassis 1. The output shaft of the stepping motor is connected to the shaft. The shaft is connected The pressure-bearing frame 4 is located in the chassis 1. The stepper motor can drive the rotating shaft to drive the pressure-bearing frame 4 to rotate. The pressure-bearing frame 4 includes a frame body 41 connected to the rotating shaft. The left and right outer walls, the top and the bottom of the frame body 41 are all inclined with the front lower and the back higher. The left and right outer walls, the top and the bottom of the frame body 41 are connected to a surrounding frame 42 that matches the box body 5. The front sides of the left and right outer walls, the top and the bottom of the frame body 41 are provided with a receiving groove 43 for accommodating the drain pipe 10. The front side of the surrounding frame 42 is provided with a through groove 44 for the drain pipe 10 to be raised and lowered. The left and right outer walls, the top and the bottom of the frame body 41 are provided with a filter assembly. The filter assembly includes a connection The sealing ring 13 on the outside of the frame 41 matches the cylinder 6, and a drain port 131 is provided on the front side of the bottom of the sealing ring 13. A filter screen 14 is connected to the outside of the frame 41, and the filter screen 14 is located on the inner side of the sealing ring 13. There is a gap between the filter screen on the filter screen 14 and the frame 41 for liquid to flow. The filter cloth 15 is connected to the filter screen 14 by fastening bolts 16, and the bolts on the fastening bolts 16 are fixedly connected to the filter screen 14. A circular frame 17 located below the pressure frame 4 is provided in the chassis 1, and a knocking mechanism for knocking the filter cake is provided on the circular frame 17. A driving mechanism for driving the circular frame 17 and the box 5 to rise and fall is provided in the chassis 1.

[0032] The control driving mechanism works, drives the circular frame 17 to drive the knocking mechanism to move upward, and drives the box 5 to drive the cylinder 6 to move downward, the box 5 moves downward and enters into the uppermost enclosure 42, the box 5 is in close contact with the top of the frame 41, and after entering the enclosure 42, the box 5 supports the enclosure 42 to prevent the enclosure 42 from rotating, thereby locking the frame 41, preventing the frame 41 from being pushed and shaken by the box 5, and improving stability. The cylinder 6 moves downward and enters into the gap between the filter screen 14 and the sealing ring 13 at the uppermost end, and the sealing ring 13 seals the lower part of the cylinder 6 around to prevent the subsequent sodium tungstate solution and slag from flowing out from the lower part of the cylinder 6 around, ensuring that the sodium tungstate solution and slag are fully filtered by the filter screen 14. The injection tube 11 is connected to an infusion device to inject the sodium tungstate solution into the cylinder 6 through the injection tube 11. The sodium tungstate solution and the slag can be filtered through the cooperation of the filter screen 14 and the filter cloth 15. The sodium tungstate solution enters the gap between the filter screen and the frame 41 through the filter screen 14 and the filter cloth 15, while the slag is stopped by the filter cloth 15 and stays on the filter screen 14, so as to achieve the filtering and separation of the sodium tungstate solution and the slag. Since the bottom of the box body 5 is designed with a low front and a high rear, and the left and right outer walls and the top and bottom of the frame 41 are designed with a low front and a high rear, the filtered sodium tungstate solution can be directed forward, and the filtered sodium tungstate solution is then discharged forward from the sealing ring 13 through the drain port 131. The filtered sodium tungstate solution then enters the drain pipe 10 and is discharged outward. The drain pipe 10 is connected to a pipeline to discharge the filtered sodium tungstate solution to a suitable location. When more filter residues are intercepted on the filter cloth 15 at the top, the electromagnetic valve 12 is controlled to be closed, and the sodium tungstate solution is stopped from being injected. Then, the hydraulic cylinder 8 is controlled to drive the inverted U-shaped connecting plate 9 to drive the pressing plate 7 to move down, and the filter residues on the filter cloth 15 at the top are pressed to squeeze out the sodium tungstate solution remaining in the filter residues. After the filter pressing is completed, the hydraulic cylinder 8 is controlled to drive the inverted U-shaped connecting plate 9 to drive the pressing plate 7 to move up and reset, and then the driving mechanism is controlled to work, drive the circular frame 17 to drive the knocking mechanism to move down, and drive the box 5 to drive the cylinder 6 to move up and reset, so as to avoid the pressure frame 4 and avoid hindering the subsequent rotation of the pressure frame 4, and then the electric shaft 3 is controlled to drive the pressure frame 4 to rotate 90 degrees, and the empty filter screen 14 and filter cloth 15 are rotated to face upward, and the filter screen 14 and filter cloth 15 intercepted with filter residues are rotated to face downward. Then the driving mechanism is controlled to work, driving the circular frame 17 to drive the knocking mechanism to move up, and driving the box 5 to drive the cylinder 6 to move down, and then the solenoid valve 12 is controlled to open to continue injecting the sodium tungstate solution, without stopping to clean the filter residue, avoiding the interruption of the slag filtration treatment work, and being able to continue the slag filtration treatment work, thereby improving the filtration efficiency of the sodium tungstate solution. After the filter residue rotates downward, it falls downward under its own gravity and is discharged outside the chassis 1. A collection container is placed under the chassis 1 to collect the filter residue.The filter residue is squeezed into a filter cake by the pressing plate 7. The compacted filter cake may not fall off the filter screen 14 and cause it to get stuck. The knocking mechanism can be controlled to knock the filter cake that rotates to the bottom to break the filter cake at the bottom, so that the filter cake breaks and disperses and falls from the filter screen 14, solving the problem that the compacted filter cake cannot fall off the filter screen 14 and gets stuck, achieving the effect of automatically cleaning the filter residue to ensure that the slag filtration treatment work can be carried out continuously, without the need to frequently replace the filter screen 14 and the filter cloth 15, and reducing the maintenance cost. The filter residue can be collected and discharged through the cloth cover 31 to prevent the filter residue from being scattered everywhere. The nut on the fastening bolt 16 can be unscrewed from the bolt to release the lock on the filter cloth 15, so as to facilitate the replacement of the filter cloth 15.

[0033] See also Figure 2 and Figure 6 The driving mechanism includes two front and rear guide rods 181 connected to the bottom of the inner side of the chassis 1, and the circular frame 17 is slidably connected to the two guide rods 181. The bottom of the inner side of the chassis 1 is equipped with two front and rear rodless cylinders 182. The two rodless cylinders 182 are respectively located on the left sides of the two guide rods 181. The slider of the rodless cylinder 182 is connected to the circular frame 17. The rodless cylinder 182 and the guide rod 181 are both located on the inner side of the circular frame 17. The top of the inner side of the chassis 1 is connected with left and right guide rods 183. A lifting block 184 is slidably connected between the two guide rods 183. The box body 5 is connected to the front side of the lifting block 184. The inner wall of the rear side of the chassis 1 is rotatably connected with left and right fixed pulleys 185. The top of the circular frame 17 is connected with left and right pull ropes 186. The two pull ropes 186 respectively pass around the two fixed pulleys 185 and are connected to the top of the lifting block 184.

[0034] The rodless cylinder 182 is controlled to drive the circular frame 17 to drive the knocking mechanism to move downward to avoid the pressure frame 4 and avoid hindering the subsequent rotation of the pressure frame 4. When the circular frame 17 moves downward, the lifting block 184 is pulled upward by the pull rope 186. The lifting block 184 moves upward to drive the box body 5 to move upward and disengage from the pressure frame 4 to avoid hindering the subsequent rotation of the pressure frame 4; after the pressure frame 4 rotates 90 degrees, the rodless cylinder 182 is controlled to drive the circular frame 17 to drive the knocking mechanism to move upward and reset. The circular frame 17 moves upward to release the pull rope 186. Under the action of gravity, the box body 5 and the lifting block 184 move downward and reset accordingly, and the box body 5 moves downward into the surrounding frame 42 at the uppermost end.

[0035] See also Figure 7-Figure 8The striking mechanism includes two left and right sliding blocks 191 slidably connected in the circular frame 17, an inverted U-shaped mounting plate 192 is connected between the tops of the two sliding blocks 191, and an electric screw rod 193 is provided on the right side of the circular frame 17. The electric screw rod 193 includes a servo motor and a screw rod, the screw rod is rotatably connected to the right side of the circular frame 17, the screw rod is threadedly connected to the right sliding block 191, and a servo motor is installed on the right side of the front outer wall of the circular frame 17. The output shaft of the servo motor is connected to the screw rod. The servo motor drives the screw rod to rotate so that the right sliding block 191 can move backward with the inverted U-shaped mounting plate 192. The servo motor drives the screw rod to reverse, which can make the right sliding block 191 move forward with the inverted U-shaped mounting plate 192. A lifting plate 194 is slidably provided on the inverted U-shaped mounting plate 192, and the lifting plate 194 is evenly spaced from left to right. There are eight knocking rods 195 connected, and the knocking rods 195 are used to knock the filter cake. The top of the knocking rod 195 passes through the top of the inverted U-shaped mounting plate 192, and the top of the knocking rod 195 is connected with a rubber block. Through the buffering effect of the rubber block, the filter cloth 15 can be effectively protected to prevent the knocking rod 195 from piercing the filter cloth 15 during the knocking process. Two springs 196 are symmetrically connected between the top of the lifting plate 194 and the top of the inner side of the inverted U-shaped mounting plate 192. The left and right sides of the inverted U-shaped mounting plate 192 are rotatably connected with a gear shaft 197 located on the lower side of the lifting plate 194. A cam 199 is connected to the shaft of the gear shaft 197, and the cam 199 contacts the bottom of the lifting plate 194. The left and right sides of the top of the circular frame 17 are connected with racks 198, and the two racks 198 are respectively engaged with the gears on the two gear shafts 197.

[0036] When the circular frame 17 moves downward, it drives the sliding block 191, the inverted U-shaped mounting plate 192, the electric screw 193, the lifting plate 194, the knocking rod 195, the gear shaft 197 and the rack 198 and other components to move downward to avoid the pressure frame 4 and avoid hindering the subsequent rotation of the pressure frame 4. When the circular frame 17 moves upward, it drives the sliding block 191, the inverted U-shaped mounting plate 192, the electric screw 193, the lifting plate 194, the knocking rod 195, the gear shaft 197 and the rack 198 and other components to move upward and reset. Next, the electric screw 193 is controlled to work, so as to drive the right sliding block 191 to move back and forth with the inverted U-shaped mounting plate 192, and the lifting plate 194, the knocking rod 195 and the gear shaft 197 move back and forth accordingly. When the gear shaft 197 moves back and forth along the rack 198, the gear shaft 197 drives the cam 199 to rotate under the meshing action of the rack 198 and the gear. When the longer end of the cam 199 rotates and contacts the lifting plate 194, the cam 199 continues to rotate to push the lifting plate 194 upward, and the spring 196 The cam 199 is compressed accordingly. When the longer end of the cam 199 rotates and disengages from the lifting plate 194, the lifting plate 194 is pushed downward under the reset action of the spring 196. The lifting plate 194 moves up and down, driving the knocking rod 195 to move up and down to knock and rotate the filter cake at the lower end, so as to break the filter cake at the lower end, so that the filter cake breaks into pieces and falls off the filter screen 14, thereby solving the problem that the compacted filter cake cannot fall off and get stuck on the filter screen 14, and achieving the effect of automatically cleaning the filter residue, thereby ensuring that the slag filtration treatment work can be carried out continuously.

[0037] See also Figure 9-10 The pressing plate 7 is provided with a cleaning brush mechanism, which includes two electric slide rails 21 symmetrically installed on the top of the pressing plate 7, and a lifting plate 22 is connected between the sliders of the two electric slide rails 21. The electric slide rails 21 and the lifting plate 22 are both located on the inner side of the inverted U-shaped connecting plate 9. The lifting plate 22 is rotatably connected with a rotating shaft 27. The bottom end of the rotating shaft 27 passes through the pressing plate 7 and is connected with a cleaning brush 24. A receiving groove 71 for receiving the cleaning brush 24 is opened at the bottom of the pressing plate 7. The cleaning brush 24 includes a brush 241 connected to the bottom end of the rotating shaft 27. The left and right sides of the first 241 are both slidably connected with sliding rods 242, and the ends of the two sliding rods 242 that are away from each other are connected with brushes 243. A spring 244 is connected between the sliding rod 242 and the brush 1 241. A driving motor 23 is installed on the top of the lifting plate 22. The output shaft of the driving motor 23 is connected to the rotating shaft 27. The bottom of the brush 1 241 is connected to a lower blocking plate 25 for sealing the receiving groove 71. The upper part of the rotating shaft 27 is rotatably connected to an upper blocking plate 26 for sealing the receiving groove 71. The upper blocking plate 26 slides with the receiving groove 71.

[0038] After the pressing plate 7 moves upward in the cylinder 6, the electric slide rail 21 is first controlled to drive the lifting plate 22 to drive the rotating shaft 27 to move downward, thereby driving the cleaning brush 24 to move downward from the storage groove 71, and the upper blocking plate 26 moves downward to seal the storage groove 71, so as to prevent the filter residue from entering the storage groove 71 when the subsequent cleaning brush 24 cleans the pressing plate 7. Then the driving motor 23 is controlled to work, so as to drive the rotating shaft 27 to drive the entire cleaning brush 24 to rotate and clean the bottom of the pressing plate 7, so as to clean the slag adhering to the bottom of the pressing plate 7, ensure that the bottom surface of the pressing plate 7 remains flat, and then ensure that the subsequent pressing plate 7 applies uniform pressure to the slag during the filter press, thereby improving the filter press efficiency and effect of the sodium tungstate solution; the brush 243 will be swung outward due to the centrifugal force when rotating, increasing the cleaning area of ​​the pressing plate 7, ensuring that the bottom surface of the pressing plate 7 is fully cleaned, and improving the cleaning effect. After the bottom surface of the pressing plate 7 is cleaned, the electric slide rail 21 is controlled to drive the lifting plate 22 to drive the rotating shaft 27 to move upward, thereby driving the cleaning brush 24 to move upward into the receiving groove 71, and the lower blocking plate 25 moves upward to seal the receiving groove 71 to prevent the filter residue from entering the receiving groove 71 when the pressing plate 7 performs filter pressing on the slag.

[0039] See also Figure 7-Figure 8 An air injection pipe 20 is connected between the two sliding blocks 191. The air injection pipe 20 includes a main pipe 201 connected between the two sliding blocks 191. A gas injection pipe 202 is connected to the left side of the main pipe 201. The gas injection pipe 202 is a hose. The gas injection pipe 202 extends out of the chassis 1. Two groups of branch pipes 203 are symmetrically connected to the top of the main pipe 201 with the inverted U-shaped mounting plate 192 as the symmetry center. The top of each branch pipe 203 is connected to a nozzle 204 that sprays gas upward.

[0040] The gas injection pipe 202 is connected to an external gas transmission device to input the gas into the main pipe 201, and the gas is sprayed upward onto the filter cloth 15 at the lower end through the nozzle 204. In this way, the filter residue remaining on the filter cloth 15 can be blown off, thereby improving the filter residue cleaning effect, ensuring that the filter cloth 15 maintains a good filtering effect, and preventing the filtration efficiency from decreasing due to the accumulation of filter residue. The sliding block 191 moves forward and backward to drive the entire injection pipe 20 to move forward and backward, thereby increasing the gas coverage range and ensuring that the filter residue on the filter cloth 15 is completely removed.

[0041] The above-mentioned embodiments only express the preferred implementation modes of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present invention. It should be pointed out that, for those skilled in the art, several modifications, improvements and substitutions can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention.

Claims

1. A filter press treatment device for preparing a sodium tungstate solution, comprising a chassis (1), a chassis door (2) being hingedly connected to the right side of the chassis (1), a box body (5) with an open bottom being provided inside the chassis (1), a cylinder body (6) with an open bottom being connected to the top of the inner side of the chassis (5), an extrusion mechanism for extruding filter residue being provided inside the cylinder body (6), a liquid discharge pipe (10) extending out of the chassis (1) being connected to the lower part of the chassis (5), a liquid injection pipe (11) extending out of the chassis (1) being connected to the upper part of the cylinder body (6), a solenoid valve (12) being installed at the lower part of the liquid injection pipe (11), and the characteristic is that: The chassis (1) is provided with an electric rotating shaft (3) located below the box body (5), and the electric rotating shaft (3) is connected to a pressure frame (4) located inside the chassis (1). The pressure frame (4) is provided with filter components for filtering slag and sodium tungstate solution on all sides of the outside, and the four filter components are distributed in a ring shape. The chassis (1) is provided with a circular frame (17) located below the pressure frame (4), and the circular frame (17) is provided with a knocking mechanism for knocking the filter cake. The chassis (1) is provided with a driving mechanism for driving the circular frame (17) and the box body (5) to rise and fall. When the driving mechanism drives the circular frame (17) to move upward, the box body (5) moves downward onto the pressure frame (4), and when the driving mechanism drives the circular frame (17) to move downward, the box body (5) moves upward and separates from the pressure frame (4).

2. The filter press treatment device for preparing sodium tungstate solution according to claim 1, characterized in that: The pressure-bearing frame (4) comprises a frame body (41) connected to the electric rotating shaft (3), the frame body (41) is connected to surrounding frames (42) matching the box body (5) on all four sides of the outside, the four surrounding frames (42) are distributed in a ring shape, the frame body (41) is provided with receiving grooves (43) for receiving the discharge pipe (10) on all four sides of the outside, and the surrounding frames (42) are provided with through grooves (44) for the discharge pipe (10) to be raised and lowered.

3. The filter press treatment device for preparing sodium tungstate solution according to claim 2, characterized in that: The filter assembly comprises a sealing ring (13) connected to the outside of the frame (41), the sealing ring (13) matches the cylinder (6), a liquid discharge port (131) is formed on the sealing ring (13), a filter screen (14) is connected to the outside of the frame (41), the filter screen (14) is located on the inner side of the sealing ring (13), and a detachable filter cloth (15) is connected to the filter screen (14).

4. The filter press treatment device for preparing sodium tungstate solution according to claim 3, characterized in that: The knocking mechanism comprises two left and right sliding blocks (191) slidably connected in the circular frame (17); an inverted U-shaped mounting plate (192) is connected between the tops of the two sliding blocks (191); an electric screw (193) is provided on the right side of the circular frame (17); the screw on the electric screw (193) is threadedly connected to the right sliding block (191); a lifting plate (194) is provided on the inverted U-shaped mounting plate (192); a knocking rod (195) for knocking the filter cake is connected to the lifting plate (194) at intervals; the top end of the knocking rod (195) passes through the inverted U-shaped mounting plate (19 2) top, a spring 1 (196) is connected between the top of the lifting plate 1 (194) and the top of the inner side of the inverted U-shaped mounting plate (192), the left and right sides of the inverted U-shaped mounting plate (192) are rotatably connected to a gear shaft (197) located at the lower side of the lifting plate 1 (194), a cam (199) is connected to the shaft of the gear shaft (197), the cam (199) contacts the bottom of the lifting plate 1 (194), and the left and right sides of the top of the circular frame (17) are connected to racks (198), and the two racks (198) are respectively meshed with gears on the two gear shafts (197).

5. The filter press treatment device for preparing sodium tungstate solution according to claim 4, characterized in that: The driving mechanism comprises a guide rod 1 (181) connected to the bottom of the inner side of the chassis (1); a circular frame (17) is slidably connected to the guide rod 1 (181); a rodless cylinder (182) is installed at the bottom of the inner side of the chassis (1); a slider of the rodless cylinder (182) is connected to the circular frame (17); a guide rod 2 (183) is connected to the top of the inner side of the chassis (1); a lifting block (184) is slidably connected to the guide rod 2 (183); a box body (5) is connected to the lifting block (184); a fixed pulley (185) is rotatably connected to the inner wall of the chassis (1); a pull rope (186) is connected to the top of the circular frame (17); the pull rope (186) passes around the fixed pulley (185) and is connected to the top of the lifting block (184).

6. The filter press treatment device for preparing sodium tungstate solution according to claim 5, characterized in that: The extrusion mechanism comprises a pressing plate (7) slidably arranged in a cylinder (6), the top of the pressing plate (7) being connected to an inverted U-shaped connecting plate (9), a hydraulic cylinder (8) being installed on the top of the box (5), and a telescopic rod of the hydraulic cylinder (8) extending into the cylinder (6) and connected to the inverted U-shaped connecting plate (9).

7. The filter press treatment device for preparing sodium tungstate solution according to claim 6, characterized in that: The pressing plate (7) is provided with a cleaning brush mechanism, which includes an electric slide rail (21) mounted on the top of the pressing plate (7), a lifting plate (22) connected to a slider of the electric slide rail (21), the electric slide rail (21) and the lifting plate (22) are both located on the inner side of the inverted U-shaped connecting plate (9), a rotating shaft (27) is rotatably connected to the lifting plate (22), the bottom end of the rotating shaft (27) passes through the pressing plate (7) and is connected to a cleaning brush (24), and the bottom of the pressing plate (7) is opened. A storage groove (71) for storing a cleaning brush (24) is provided. A driving motor (23) is installed on the top of the second lifting plate (22). The output shaft of the driving motor (23) is connected to a rotating shaft (27). A lower blocking plate (25) for sealing the storage groove (71) is connected to the bottom of the cleaning brush (24). An upper blocking plate (26) for sealing the storage groove (71) is rotatably connected to the upper part of the rotating shaft (27). The upper blocking plate (26) is slidably matched with the storage groove (71).

8. The filter press treatment device for preparing sodium tungstate solution according to claim 7, characterized in that: The cleaning brush (24) comprises a brush 1 (241) connected to the bottom end of the rotating shaft (27); brush 2 (243) is slidably connected to the left and right sides of brush 1 (241) via a sliding rod (242); a spring 2 (244) is connected between the sliding rod (242) and brush 1 (241); and a lower blocking plate (25) is connected to the bottom of brush 1 (241).

9. The filter press treatment device for preparing sodium tungstate solution according to claim 8, characterized in that: An air injection pipe (20) for spraying gas upward onto the filter cloth (15) is connected between the two sliding blocks (191).

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