Silicic acid mud removal extrusion separation device based on ferric oxide powder purification process

Abstract

The invention relates to the technical field of ferric oxide powder purification, in particular to a silicic acid mud removal extrusion separation device based on a ferric oxide powder purification process, which comprises an operation frame, an L-shaped notch groove is formed in the top of the operation frame, an L-shaped display frame is arranged on the adjacent side of the operation frame in an extending manner, and a pretreatment mechanism is arranged in the L-shaped display frame; a material guiding inclined plate is arranged on the inner side wall of the L-shaped display frame and located below the pretreatment mechanism, a dynamic extrusion mechanism is arranged at the end, close to the notch groove, in the operation frame, and a decontamination assembly is arranged at the other end of the operation frame. The pretreatment mechanism comprises a long feeding cylinder movably installed at the top of the operation frame and located at the notch groove, the pretreatment function, the dynamic extrusion function and the automatic decontamination function are integrated in the same operation frame, a continuous automatic production line is constructed, all the mechanisms cooperatively work by means of mechanical linkage and program control, and the production efficiency is improved. The full-process automation from feeding, dehydration, extrusion to equipment cleaning is achieved, and the continuity and stability of the process are improved.

Description

Technical Field

[0001] This invention relates to the field of iron oxide powder purification technology, specifically to a desilicic acid sludge extrusion and separation device based on iron oxide powder purification process. Background Technology

[0002] In the process of purifying iron oxide powder, the generation of silica sludge is a rather tricky problem. Silica sludge not only occupies a lot of storage space, but the impurities it contains will also have an adverse effect on the purity of iron oxide powder, thereby reducing the performance and quality of iron oxide powder in subsequent applications. Currently, industrial processes for treating this type of silica sludge typically employ methods such as static sedimentation, natural drying, or simple mechanical filtration. However, conventional processes have numerous drawbacks: (1) Low separation efficiency and poor effect: Although simple mechanical pressure filtration can speed up the processing, it often has problems such as uneven squeezing and inaccurate pressure control, resulting in excessive or insufficient squeezing in some areas. The separated mud cake still has a high water content and uneven texture.

[0003] (2) Silicate mud has extremely strong adhesion. After being squeezed and dehydrated, it will firmly adhere to the surface of the extrusion plate. Conventional equipment lacks an effective self-cleaning mechanism. It is necessary to stop the machine for cleaning after each operation. This not only greatly increases the labor intensity and reduces the production efficiency, but also causes damage to the equipment itself in the long run due to incomplete cleaning.

[0004] (3) Inconsistent process flow: Pretreatment, extrusion, cleaning and other processes are usually completed by independent equipment. Materials need to be transferred in the middle, which not only increases the complexity of the process and the equipment footprint, but also increases the risk of material exposure and loss, making it difficult to form an efficient and continuous automated production line.

[0005] To address this technical deficiency, a solution is proposed. Summary of the Invention

[0006] The purpose of this invention is to build a continuous automated production line by integrating pretreatment, dynamic extrusion, and automatic decontamination functions into the same operating frame. The various mechanisms work together through mechanical linkage and program control to achieve full-process automation from feeding, dewatering, extrusion to equipment cleaning, thereby improving the continuity and stability of the process.

[0007] The objective of this invention can be achieved through the following technical solution: a silica sludge extrusion and separation device based on iron oxide powder purification process, comprising an operating frame, an L-shaped notch groove at the top of the operating frame, and an L-shaped expansion frame extending from the adjacent side of the operating frame, a pretreatment mechanism being provided inside the L-shaped expansion frame, and a guide plate being provided on the inner side wall of the L-shaped expansion frame below the pretreatment mechanism, a dynamic extrusion mechanism being provided at one end of the operating frame near the notch groove, and a decontamination component being provided at the other end of the operating frame; The pretreatment mechanism includes a feeding cylinder movably installed at the top of the operating frame at the notch, and the feeding cylinder is installed through the base of the top frame of the operating frame. The bottom outlet end of the feeding cylinder has a semi-circular opening groove, and the top surface of the other end has a guide pipe. The outer wall of the feeding cylinder corresponding to the guide pipe has a mesh structure.

[0008] Furthermore, the bottom surface of the operating frame is divided into two parts, and each part is provided with a mesh surface. The mesh hole diameter of the area where the bottom surface of the operating frame overlaps with the dynamic extrusion mechanism is smaller than the mesh hole diameter of the other area.

[0009] Furthermore, a spiral guide rod is rotatably installed inside the feeding cylinder, with one end of the spiral guide rod extending to the semi-circular opening groove. The other end of the spiral guide rod is connected to the output shaft of a motor located outside the feeding cylinder. A double-axis retaining ring is fixedly sleeved at the middle section of the outer side of the feeding cylinder, and a rectangular push plate is sleeved on the outside of the double-axis retaining ring. A cylinder is installed between the front end of one side of the rectangular push plate and the inner side wall of the L-shaped display frame.

[0010] Furthermore, the dynamic extrusion mechanism includes two sets of lead screws rotatably arranged in the operating frame, located on the front and rear sides of the L-shaped notch. The two sets of lead screws in the same row are fixedly connected by a connecting rod. Each of the two sets of lead screws has a guide rod fixedly installed at its opposite ends. The end of one set of guide rods extends to the inner wall of the L-shaped display frame and is fixedly installed with a limit gear. The two sets of lead screws in the same row are arranged with opposite spiral structures, and their opposite ends are respectively spirally sleeved with sliders.

[0011] Furthermore, long toothed rollers are respectively meshed at opposite ends of the two sets of limiting gears. The end of the central shaft of each set of long toothed rollers is fixedly connected to the outer wall of the operating frame. A drive motor is provided at the end of one set of shafts. Transmission wheels are respectively fixedly sleeved at the ends of the two sets of shafts away from the operating frame. A transmission belt is sleeved between the two sets of transmission wheels.

[0012] Furthermore, each of the upper and lower ends of the slider is hinged with an inclined abutment, and the two sets of abutments are hinged together with a concave positioning frame, and the two sets of positioning frames in the same row are fixedly installed with a pressing plate.

[0013] Furthermore, a double-axis retaining ring 2 is fixedly sleeved on the outside of the guide rod at the position adjacent to the limiting gear, and an H-shaped lifting plate is sleeved between the front and rear sets of the double-axis retaining ring 2, and a cylinder 2 is provided between the center of the H-shaped lifting plate and the outer wall of the operating frame.

[0014] Furthermore, the decontamination assembly includes a decontamination plate movably installed inside the operating frame away from the end of the dynamic extrusion mechanism, and the front and rear ends of the decontamination plate are rough surfaces. Slide rods are vertically installed through both ends inside the decontamination plate, and the upper and lower ends of the slide rods are fixedly connected to the inner wall of the operating frame. The vertical groove on the outer wall of the slide rod slides in cooperation with the slide bar in the inner wall of the groove of the decontamination plate, and the cooperation direction is longitudinal. A spiral groove is opened in the center of the decontamination plate, and a second lead screw is spirally connected in the spiral groove. A second drive motor is installed between the top of the second lead screw and the top inner wall of the operating frame.

[0015] Compared with the prior art, the beneficial effects of the present invention are: 1. By setting up a pretreatment mechanism, the feeding cylinder 31 can perform preliminary filtration of acid sludge through its mesh structure during the feeding stage, separating some moisture in advance and reducing the load on the subsequent extrusion unit. Furthermore, through the quantitative conveying of the spiral guide rod 32, combined with the reciprocating oscillation of the feeding cylinder 31 driven by the cylinder 35, it is ensured that the acid sludge is evenly and flatly spread in the extrusion area. The uniform material distribution is the basis for subsequent efficient extrusion, effectively avoiding the problem of insufficient local extrusion or material overflow caused by uneven material distribution. 2. The present invention sets up a dynamic extrusion mechanism, using symmetrically arranged lead screws with opposite spiral directions to drive two sets of sliders to move synchronously towards or away from each other. This structure ensures that the extrusion plates on both sides can apply a balanced and stable extrusion force to the material, resulting in high extrusion efficiency and dense material forming. 3. This invention, by setting up a decontamination component, which works in conjunction with a dynamic extrusion mechanism, is specifically designed to clean residues adhering to the extrusion plate due to the stickiness of silica sludge. The cleaning process combines lateral scraping (the extrusion plate moves horizontally to contact the rough surface) and longitudinal friction (the decontamination plate moves longitudinally under the drive of the second drive motor), forming a two-dimensional cleaning path. This allows for thorough cleaning of the extrusion plate surface without any blind spots, ensuring that the initial state of each extrusion operation is consistent and guaranteeing the stability of product quality. Attached Figure Description

[0016] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings.

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram showing the combination of the operation frame, pretreatment mechanism, and dynamic extrusion mechanism of the present invention; Figure 3This is a top view of the combination of the operation frame, pretreatment mechanism and dynamic extrusion mechanism of the present invention; Figure 4 This is a plan view of the overall structure of the present invention; Figure 5 This is a cross-sectional view of the operation box of the present invention; Figure 6 This is a three-dimensional structural diagram of the stain removal component of the present invention.

[0018] In the diagram: 1. Operation frame; 2. L-shaped display frame; 3. Pre-treatment mechanism; 31. Feeding cylinder; 32. Spiral guide rod; 33. Double-axis retaining ring one; 34. Rectangular push plate; 35. Cylinder one; 4. Dynamic extrusion mechanism; 41. Lead screw one; 42. Guide rod; 421. Limit gear; 43. Slider; 44. Toothed roller; 45. Drive motor one; 46. Abutment plate; 47. Positioning frame; 48. Extrusion plate; 49. Double-axis retaining ring two; 410. H-shaped lifting plate; 411. Cylinder two; 5. Decontamination assembly; 51. Decontamination plate; 52. Slide rod; 53. Lead screw two; 54. Drive motor two. Detailed Implementation

[0019] The technical solution of the present invention will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] Example 1: Please refer to Figure 1 - Figure 4 As shown, the silica sludge extrusion and separation device based on the iron oxide powder purification process includes an operating frame 1. The top of the operating frame 1 has an L-shaped notch with a length of half the total length of the top of the operating frame 1. An L-shaped expansion frame 2 extends from the adjacent side of the operating frame 1. A pretreatment mechanism 3 is installed inside the L-shaped expansion frame 2. A guide plate is installed on the inner side wall of the L-shaped expansion frame 2 below the pretreatment mechanism 3. A dynamic extrusion mechanism 4 is installed at one end of the operating frame 1 near the notch, and a decontamination component 5 is installed at the other end. The bottom surface of the operating frame 1 is divided into two parts, and each part is provided with a mesh. The mesh hole diameter of the area where the bottom surface of the operating frame 1 overlaps with the dynamic extrusion mechanism 4 is smaller than the mesh hole diameter of the other area. The pretreatment mechanism 3 includes a feeding cylinder 31 that is movably installed on the top of the operating frame 1 at the notch. The feeding cylinder 31 passes through the base installed on the top side of the operating frame 1. A semi-circular opening slot is provided at the bottom outlet end of the feeding cylinder 31, and a guide pipe is provided at the top surface of the other end. The outer wall of the feeding cylinder 31 corresponding to the guide pipe is a mesh structure. A spiral guide rod 32 is rotatably installed inside the feeding cylinder 31, with one end of the spiral guide rod 32 extending to the semi-circular opening groove. The other end of the spiral guide rod 32 is connected to the output shaft of a motor located outside the feeding cylinder 31. A double-shaft retaining ring 33 is fixedly sleeved at the middle section outside the feeding cylinder 31, and a rectangular push plate 34 is sleeved outside the double-shaft retaining ring 33. A cylinder 35 is installed between the front end of one side of the rectangular push plate 34 and the inner side wall of the L-shaped display frame 2.

[0021] In practice, the acid sludge to be treated is first introduced into the feeding cylinder 31 through the feed pipe. Since the outer wall of the feeding cylinder 31 corresponding to the feed pipe has a mesh structure, the moisture of the material can be initially filtered during the introduction process and discharged through the guide plate below. Then, the motor is started, and the output shaft drives the spiral guide rod 32 to rotate. The spiral guide rod 32 squeezes the material out from the semi-circular opening groove at the bottom outlet of the feeding cylinder 31 and makes it fall into the operating frame 1. At the same time, the cylinder 35 works, pushing the rectangular push plate 34 to move back and forth. The rectangular push plate 34 drives the feeding cylinder 31 to move back and forth within a certain angle range through the double shaft retaining ring 33, forcing the material squeezed out from the semi-circular opening groove to be more evenly distributed in the area near the notch groove in the operating frame 1, preparing for the subsequent extrusion processing of the dynamic extrusion mechanism 4.

[0022] Example 2: Please refer to Figure 2 , Figure 3 As shown, the dynamic extrusion mechanism 4 includes two sets of lead screws 41 rotatably arranged in the operation frame 1, located on the front and rear sides of the L-shaped notch. The two sets of lead screws 41 in the same row are fixedly connected by a connecting rod. Each of the two sets of lead screws 41 has a guide rod 42 fixedly installed at the opposite ends. One of the guide rods 42 extends to the inner wall of the L-shaped display frame 2 and is fixedly installed with a limit gear 421. The two sets of lead screws 41 in the same row are arranged with opposite spiral structures, and the opposite ends of the two are respectively spirally sleeved with sliders 43. Two sets of limiting gears 421 are respectively meshed with long toothed rollers 44 at opposite ends. The end of the central shaft of each set of long toothed rollers 44 is fixedly connected to the outer wall of the operating frame 1. One set of shafts is equipped with a drive motor 45. The ends of the two sets of shafts away from the operating frame 1 are respectively fixedly sleeved with transmission wheels. A transmission belt is sleeved between the two sets of transmission wheels. The upper and lower ends of the slider 43 are each hinged with an inclined abutment plate 46. The upper and lower abutment plates 46 are hinged together with a concave positioning frame 47. The two sets of positioning frames 47 in the same row are fixedly installed with a pressing plate 48.

[0023] The dynamic extrusion process includes: Based on Example 1, after the silica mud is evenly distributed in the area near the notch in the operation frame 1, the drive motor 45 is started and the shaft connected to it is rotated. The shaft drives another set of shafts to rotate synchronously through the transmission wheel and the transmission belt, thereby causing the two sets of long toothed rollers 44 to rotate. Since the long toothed rollers 44 mesh with the limiting gear 421, the limiting gear 421 is fixed at the end of the guide rod 42, and the guide rod 42 is connected to the lead screw 41, the rotation of the long toothed rollers 44 will drive the lead screw 41 to rotate. Since the two sets of lead screws 41 in the same row are arranged with opposite spiral structures, when the lead screw 41 rotates, the two sets of sliders 43 will move towards each other or away from each other. When the two sets of sliders 43 move toward each other, the abutment 46 hinged at the upper and lower ends of the sliders 43 will push the concave positioning frame 47 to move, thereby driving the extrusion plate 48 to move toward the material direction, dynamically extruding the silica mud, further squeezing out the water in the silica mud, making the silica mud more compact, and achieving the purpose of extrusion separation. In the first embodiment, it is proposed to apply the material evenly, which can reduce the situation where the silica mud is squeezed to the outside due to uneven distribution. During the extrusion process, the water in the silica mud is discharged through the mesh with a smaller aperture in the overlapping area between the bottom surface of the operating frame 1 and the dynamic extrusion mechanism 4.

[0024] Example 3: Please refer to Figure 3 , Figure 5 - Figure 6 As shown, a double-shaft retaining ring 49 is fixedly sleeved on the outside of the guide rod 42 at the position adjacent to the limiting gear 421. An H-shaped lifting plate 410 is sleeved between the front and rear sets of double-shaft retaining rings 49, and a cylinder 411 is provided between the center of the H-shaped lifting plate 410 and the outer wall of the operating frame 1. The cleaning assembly 5 includes a cleaning plate 51 movably installed in the operating frame 1 away from the end of the dynamic extrusion mechanism 4. The front and rear ends of the cleaning plate 51 are rough surfaces. Slide rods 52 are vertically installed at both ends inside the cleaning plate 51. The upper and lower ends of the slide rods 52 are fixedly connected to the inner wall of the operating frame 1. The vertical groove on the outer wall of the slide rods 52 slides in cooperation with the slide bar in the inner wall of the groove of the cleaning plate 51. The cooperation direction is longitudinal. A spiral groove is opened in the center of the cleaning plate 51. A screw rod 53 is spirally connected in the spiral groove. A drive motor 54 is installed between the top of the screw rod 53 and the top inner wall of the operating frame 1. After dynamic extrusion, the first drive of the front and rear rows of lead screws 41 to rotate in opposite directions, causing the two sets of sliders 43 in the same row to move away from each other, while the end of the pull plate 46 is reset, thereby causing the front and rear sets of extrusion plates 48 to move away from each other, thus stopping the extrusion of silica mud. The silica mud with the water squeezed out is deposited inside the corresponding operation frame 1. Because silica mud has a certain degree of stickiness, a small amount of silica mud is easily attached to the opposing surfaces of the two sets of extrusion plates 48. At this time, cylinder 411 is started, and the push rod is used to pull the H-shaped lifting plate 410 to move. The guide rod 42 is moved to a certain extent through the double shaft retaining ring 49. The lead screw 41, slider 43 and extrusion plate 48 move laterally in sync and continue to move closer to the cleaning plate 51. When the two sets of extrusion plates 48 move in parallel, their contaminated surfaces contact the rough surfaces of the front and rear ends of the cleaning plate 51 respectively, and first perform horizontal parallel scraping. Subsequently, driven by the second drive motor 54, the longitudinal movement is achieved through the cooperation of the second lead screw 53 and the spiral groove. This longitudinal movement, combined with the lateral movement of the extrusion plate 48, enables the cleaning plate 51 to perform comprehensive friction cleaning on the contaminated surface of the extrusion plate 48, effectively removing the silica sludge residue attached to the extrusion plate 48. After cleaning, the second cylinder 411 pushes the H-shaped lifting plate 410 to reset, thereby driving the guide rod 42, the first lead screw 41, the slider 43, and the extrusion plate 48 back to their initial positions, preparing for the next extrusion separation operation. The entire device achieves efficient extrusion separation of silica sludge and automatic cleaning of the extrusion plate 48, improving the efficiency and quality of silica sludge removal in the iron oxide powder purification process.

[0025] Working principle: When using this invention, the silica mud to be treated is first introduced into the feeding cylinder 31 of the pretreatment mechanism 3 through the feeding pipe. The material moisture is initially filtered by the mesh structure on the outer wall of the feeding cylinder 31 corresponding to the feeding pipe. The filtered water is discharged through the lower guide plate. Then, the motor is started to drive the spiral guide rod 32 to rotate, squeezing the material from the semi-circular opening groove into the area near the notch groove in the operating frame 1. At the same time, the cylinder 35 works to push the rectangular push plate 34 to move back and forth. The rectangular push plate 34 drives the feeding cylinder 31 to move back and forth within a certain angle range through the double shaft retaining ring 33, so that the material is evenly distributed in the area near the notch groove in the operating frame 1. Then, the drive motor 45 is started, which drives the shaft connected to it to rotate. This shaft drives another set of shafts to rotate synchronously through the transmission wheel and transmission belt, which in turn causes the two sets of long toothed rollers 44 to rotate. The long toothed rollers 44 mesh with the limit gear 421, which drives the lead screw 41 to rotate. Since the two sets of lead screws 41 in the same row are arranged with opposite spiral structures, the two sets of sliders 43 move towards each other. The abutment plates 46 at the upper and lower ends of the sliders 43 push the concave positioning frame 47 to move, which drives the extrusion plate 48 to move towards the material, and dynamically extrudes the silica mud, further squeezing out the water in the silica mud. The water is discharged through the mesh with a smaller aperture in the area where the bottom surface of the operating frame 1 overlaps with the dynamic extrusion mechanism 4. When the extrusion reaches a certain degree, the drive motor 45 reverses, the sliders 43 move away from each other, and the extrusion plate 48 moves away from the material, completing one dynamic extrusion process. After dynamic extrusion, the front and rear rows of lead screws 41 are driven to rotate in opposite directions, causing the two sets of sliders 43 in the same row to move away from each other, the end of the traction plate 46 is reset, the front and rear sets of extrusion plates 48 move away from each other, and the extrusion of silica mud is stopped. The silica mud with the water squeezed out is deposited inside the operation frame 1. At this point, cylinder 411 is activated, using a push rod to move the H-shaped lifting plate 410. The double-axis retaining ring 49 drives the guide rod 42 to move, and the lead screw 41, slider 43, and extrusion plate 48 move laterally in sync, approaching the cleaning plate 51. The contaminated surfaces of the two sets of extrusion plates 48 contact the rough surfaces at the front and rear ends of the cleaning plate 51 for horizontal parallel scraping. Subsequently, driven by motor 54, the cleaning plate 51 moves longitudinally through the cooperation of lead screw 52 and the spiral groove. This longitudinal movement, combined with the lateral movement of the extrusion plate 48, thoroughly cleans the contaminated surfaces of the extrusion plate 48, removing the silica sludge residue adhering to it. After cleaning, cylinder 411 pushes the H-shaped lifting plate 410 back to its original position, bringing the guide rod 42, lead screw 41, slider 43, and extrusion plate 48 back to their initial positions, ready for the next extrusion and separation operation.

[0026] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to any specific implementation. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A device for extrusion separation of silicic acid sludge based on the purification process of iron oxide powder, characterized by: Including operation frame (1), the operation frame (1) top is provided with L-shaped notch groove with the length being half of the total length of operation frame (1) top, and the operation frame (1) is provided with L-shaped exhibition frame (2) in adjacent side extension, the L-shaped exhibition frame (2) is provided with pretreatment mechanism (3) inside, and the L-shaped exhibition frame (2) inner side wall and located below pretreatment mechanism (3) is provided with guide slope, the operation frame (1) is provided with dynamic extrusion mechanism (4) inside one end near notch groove, and its other end is provided with decontamination assembly (5); Wherein, the pretreatment mechanism (3) includes feeding long barrel (31) movably mounted on the top of operation frame (1) at the notch groove, and the feeding long barrel (31) is installed through the seat on the top frame (1) of the border, the bottom surface of the feeding long barrel (31) is provided with a semicircular opening slot at the discharge port end, and the top surface of the other end is provided with a guide pipe, the outer wall of the feeding long barrel (31) corresponding to the guide pipe is a mesh surface structure.

2. The iron oxide powder-based purification process-based silicic acid sludge extrusion separation device according to claim 1, characterized in that, The bottom surface of the operation frame (1) is divided into two parts, and each part is provided with a mesh surface, wherein the mesh surface aperture of the operation frame (1) bottom surface coinciding with the dynamic extrusion mechanism (4) is smaller than the mesh surface aperture of the other area.

3. The iron oxide powder-based purification process-based silicic acid sludge extrusion separation device according to claim 1, characterized in that, The inside of the feeding long barrel (31) is provided with a spiral guide rod (32), and one end of the spiral guide rod (32) extends to the semicircular opening slot, the other end of the spiral guide rod (32) is connected with the motor output shaft arranged outside the feeding long barrel (31), the double shaft clasp one (33) is fixedly sleeved on the middle segment outside the feeding long barrel (31), and the rectangular push plate (34) is sleeved outside the double shaft clasp one (33), the side front end of the rectangular push plate (34) is provided with a cylinder one (35) between the inner side wall of the L-shaped exhibition frame (2).

4. The iron oxide powder-based purification process-based silicic acid sludge extrusion separation device according to claim 1, characterized in that, The dynamic extrusion mechanism (4) includes two groups of lead screws one (41) rotatably arranged in the operation frame (1) at the front and rear sides of the L-shaped notch groove, the two groups of lead screws one (41) are fixedly connected by connecting rods, and each of the two groups of lead screws one (41) is fixedly installed with a guide rod (42) at the end away from each other, one end of one group of guide rods (42) extends to the inner wall of the L-shaped exhibition frame (2) and is fixedly installed with a limit gear (421), the two groups of lead screws one (41) in the same row are arranged in opposite spiral structure, and the outer ends away from each other of the two groups are respectively spirally sleeved with a sliding block (43).

5. The apparatus for purifying the silica acid sludge by the iron oxide powder-based purification process according to claim 4, wherein The opposite ends of the two groups of limit gears (421) are respectively engaged with a long toothed roller (44), and the center shaft of each group of long toothed rollers (44) is fixedly connected with the outer wall of the operation frame (1), one group of shafts is provided with a driving motor one (45), and the other end of the two groups of shafts away from the operation frame (1) is respectively fixedly sleeved with a transmission wheel, and the two groups of transmission wheels are sleeved with a transmission belt.

6. The iron oxide powder-based purification process-based silicic acid sludge extrusion separation device according to claim 4, characterized in that, The upper and lower ends of the sliding block (43) are respectively hinged with inclined structure resisting pieces (46), and the upper and lower groups of resisting pieces (46) are commonly hinged with concave positioning clamping frames (47), and the two groups of positioning clamping frames (47) in the same row are commonly fixedly installed with an extrusion plate (48).

7. The apparatus for purifying the silica acid sludge by the iron oxide powder-based purification process according to claim 4, wherein The guide rod (42) is externally located adjacent to the limiting gear (421), and a double shaft clasp two (49) is fixedly sleeved thereon, the front and rear groups of double shaft claps two (49) are commonly sleeved with H-shaped lifting plates (410), and a cylinder two (411) is arranged between the center of the H-shaped lifting plate (410) and the outer wall of the operating frame (1).

8. The iron oxide-based purification process and silicic acid sludge extrusion separation device according to claim 1, characterized in that, The decontamination assembly (5) includes a decontamination plate (51) movably mounted in the operating frame (1) away from the dynamic extrusion mechanism (4), the front and rear ends of the decontamination plate (51) are rough surfaces, two ends of the decontamination plate (51) are vertically and penetratingly provided with slide rods (52), the upper and lower ends of the slide rods (52) are fixedly connected with the inner walls of the operating frame (1), the vertical grooves of the outer walls of the slide rods (52) are in sliding fit with the sliding strips of the penetrating grooves of the decontamination plate (51), and the fit directions are longitudinal, a spiral groove is formed in the inner center of the decontamination plate (51), a screw rod two (53) is spirally connected in the spiral groove, and a driving motor two (54) is commonly arranged between the top of the screw rod two (53) and the inner wall of the top of the operating frame (1).

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