A production system for recovering sodium aluminate wastewater produced by Raney nickel to generate solid sodium metaaluminate

Abstract

The present invention relates to the technical field of sodium aluminate wastewater treatment, specifically to a production system for sodium aluminate produced by Raney nickel and recycled to generate solid sodium metaaluminate, comprising a wastewater outlet and a sedimentation tank, a detachable filter screen is installed inside the sedimentation tank, a circulation device is fixedly connected to the surface of the sedimentation tank, a driving mechanism is fixedly connected to the surface of the sedimentation tank, a filtering mechanism is arranged on the side of the circulation device, a separation mechanism is arranged on the side of the filtering mechanism, and a cleaning mechanism is arranged on the surface of the sedimentation tank. In the present invention, when a rotating rod rotates, a pinion is driven to rotate, and when the pinion rotates counterclockwise, the U-shaped rod is driven to move upward through the meshing teeth, and when the U-shaped rod moves upward, the filter screen at the other end is driven to move upward, and when the filter screen moves upward, some solid particles in the wastewater are filtered to prevent them from entering the wastewater, and the solid and liquid in the wastewater are separated for treatment.

Description

Technical Field

[0001] The invention relates to the technical field of sodium aluminate wastewater treatment, in particular to a production system for recycling sodium aluminate wastewater produced by Raney nickel to generate solid sodium metaaluminate. Background Art

[0002] Raney nickel is a commonly used hydrogenation catalyst. Its preparation process usually involves the reaction of nickel and aluminum alloy with sodium hydroxide solution. The sodium aluminate solution produced by this reaction is the so-called sodium aluminate wastewater. Wastewater contains a certain concentration of sodium aluminate. If the aluminum element is discharged directly without treatment, it may cause harm to the environment, such as affecting the activity of microorganisms in soil and water bodies and causing toxicity to aquatic organisms.

[0003] In the prior art, when sodium aluminate wastewater is treated, filtering solid particles through a filter for a long time will cause the filter to become clogged, which will increase the frequency of replacing the filter. If replaced manually, the sodium aluminate wastewater will be harmful to the human body and the efficiency is extremely low. In large factories, the filtration efficiency will be slowed down, thereby reducing the rate of wastewater treatment. Summary of the invention

[0004] The object of the present invention is to provide a production system for sodium aluminate produced by Raney nickel and recycled to generate solid sodium metaaluminate, so as to solve the problems raised in the above background technology. To achieve the above object, the present invention provides the following technical scheme: a production system for sodium aluminate produced by Raney nickel and recycled to generate solid sodium metaaluminate, comprising a wastewater outlet and a sedimentation tank, a detachable filter screen is installed inside the sedimentation tank, a circulation device is fixedly connected to the surface of the sedimentation tank, a driving mechanism is fixedly connected to the surface of the sedimentation tank, a filtering mechanism is arranged on the side of the circulation device, a separation mechanism is installed on the side of the filtering mechanism, and a cleaning mechanism is arranged on the surface of the sedimentation tank.

[0005] Preferably, the circulation device includes a support frame, the support frame is fixedly connected to the surface of the sedimentation tank, the side of the support frame is rotatably connected with a cross, the side of the support frame is fixedly connected with an annular slide groove, the side of the annular slide groove is fixedly connected with an arc-shaped rack, the side of the annular slide groove is fixedly connected with an inclined rod, the surface of the sedimentation tank is fixedly connected with an inclined panel, all ends of the cross are rotatably connected with a rotating rod, the other end of the rotating rod is rotatably connected with a slider, and the slider is slidably connected inside the annular slide groove.

[0006] Preferably, the driving mechanism comprises a driving motor, the driving motor is fixed on the surface of the sedimentation tank, one end of the output shaft of the driving motor is fixedly connected to an intermittent rotating rod, and one end of the cross axis is fixedly connected to an intermittent wheel.

[0007] Preferably, the filtering mechanism includes a filter cartridge, which is fixedly connected to one end of a rotating rod, a connecting rod is rotatably connected between the two filter cartridges, a sealing cover is rotatably connected to the lower end of the filter cartridge, a filter screen is slidably connected to the inside of the filter cartridge, an extrusion block is slidably connected to the side of the filter cartridge, a limiting slide groove is fixedly connected to the side of the filter cartridge, a clamping rod is slidably connected to the inside of the limiting slide groove, a spring is provided between the clamping rod and the surface of the limiting slide groove, and the other end of the sealing cover is fixedly connected to the clamping groove.

[0008] Preferably, the separation mechanism comprises a fixing box, the fixing box is fixed to the side of the filter cartridge, and the side of the filter cartridge is fixedly connected to a bottom plate. A U-shaped rod is slidably connected inside the fixing box, one end of the U-shaped rod is fixedly connected to teeth, a rotating rod 1 is rotatably connected inside the fixing box, a small gear is fixedly connected to the surface of the rotating rod 1, and a long gear is fixedly connected to the other end of the rotating rod 1.

[0009] Preferably, a ratchet is fixedly connected to the surface of the rotating rod, a torsion spring rod is rotatably connected inside the fixed box, a pawl is fixedly connected to the surface of the torsion spring rod, the other end of the torsion spring rod is fixedly connected to an L-shaped rod, and the other end of the L-shaped rod is fixedly connected to a triangular block.

[0010] Preferably, the cleaning mechanism includes a support rod, which is fixedly connected to the surface of the sedimentation tank, the upper end of the support rod is fixedly connected to a sleeve rod, the sleeve rod is internally rotatably connected to a limit rod, one end of the limit rod is fixedly connected to a pulley, a transmission belt is transmission-connected between the pulley and the output shaft of a driving motor, one end of the sleeve rod is fixedly connected to a transverse slide groove, the transverse slide groove is internally slidably connected to a sliding rod, one end of the sliding rod is fixedly connected to a cleaning brush, the other end of the limit rod is fixedly connected to a disc, a notch is provided in the middle of the sliding rod, a round rod is fixedly connected to the surface of the disc, and the round rod is slidably connected inside the notch.

[0011] Preferably, the other end of the U-shaped rod is fixedly connected to the surface of the filter screen, the pinion is meshed with the teeth, and the ratchet is meshed with the pawl.

[0012] In the present invention, when the rotating rod rotates, the small gear is driven to rotate. When the small gear rotates counterclockwise, the U-shaped rod is driven to move upward through the meshing teeth. When the U-shaped rod moves upward, the filter screen at the other end is driven to move upward. When the filter screen moves upward, some solid particles in the wastewater are filtered to prevent them from entering the wastewater, and the solids and liquids in the wastewater are separated for treatment.

[0013] In the present invention, when the cross rotates, the rotating rod at the end is driven to rotate, and when the rotating rod rotates, the slider at one end is driven to rotate inside the annular slide groove, and the other end of the rotating rod drives the filter cartridge to rotate. When the filter cartridge rotates, it is limited by the connecting rod and the slider, so that the opening of the filter cartridge is always facing upward, thereby preventing the waste water in the filter cartridge from spilling.

[0014] In the present invention, the rotation of the disc drives the round rod to rotate, and the round rod pushes and pulls the slot when rotating. The slot drives the sliding rod to slide left and right inside the horizontal sliding groove. When the sliding rod slides, it drives the cleaning brush at one end to slide on the surface of the filter screen and cleans the solid waste on the surface of the filter screen. In this way, it can be ensured that the filter screen will not be blocked for a long time, and the filtering efficiency is further improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the three-dimensional appearance of the present invention;

[0016] Figure 2 This is a schematic diagram of the front structure of the circulation device of the present invention;

[0017] Figure 3 It is a schematic diagram of the back structure of the circulation device of the present invention;

[0018] Figure 4 It is a schematic diagram of the structure of the driving mechanism of the present invention;

[0019] Figure 5 It is a schematic diagram of the enlarged structure of the circulation device of the present invention;

[0020] Figure 6 This is a schematic diagram of the internal structure of the circulation device of the present invention;

[0021] Figure 7 This is a schematic diagram of the front structure of the filtering mechanism of the present invention;

[0022] Figure 8 It is a schematic diagram of the internal cross-sectional structure of the filtering mechanism of the present invention;

[0023] Fig. 9 It is an enlarged structural schematic diagram of the separation mechanism of the present invention;

[0024] Fig.10 It is an enlarged structural schematic diagram of the cleaning mechanism of the present invention;

[0025] Fig.11 It is a schematic diagram of the front structure of the disc of the present invention.

[0026] In the figure: 1, wastewater outlet; 2, sedimentation tank; 3, filter screen; 4, circulation device; 5, driving mechanism; 6, filtering mechanism; 7, separation mechanism; 8, cleaning mechanism; 9, connecting rod; 41, support frame; 42, cross; 43, annular slide; 44, arc rack; 45, inclined rod; 46, inclined plate; 47, rotating rod; 48, slider; 51, driving motor; 52, intermittent wheel; 53, intermittent rotating rod; 61, filter cartridge; 62, sealing cover; 63, filter screen; 64, extrusion block; 65, limit slide; 66. Clamping rod; 67. Spring; 68. Clamping slot; 71. Fixing box; 72. Bottom plate; 73. U-shaped rod; 74. Teeth; 75. Rotating rod 1; 76. Pinion; 77. Ratchet; 78. Long gear; 79. Torsion spring rod; 710. Ratchet pawl; 711. L-shaped rod; 712. Triangle block; 81. Support rod; 82. Sleeve rod; 83. Limit rod; 84. Pulley; 85. Transmission belt; 86. Horizontal slide groove; 87. Sliding rod; 88. Cleaning brush; 89. Disc; 810. Notch; 811. Round rod. DETAILED DESCRIPTION

[0027] 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 technical personnel in this field without creative work are within the scope of protection of the present invention.

[0028] See also Figures 1 to 11 The present invention provides a technical solution: a production system for recovering sodium aluminate wastewater produced by Raney nickel to generate solid sodium metaaluminate, comprising a wastewater outlet 1 and a sedimentation tank 2, wherein a detachable filter screen 3 is installed inside the sedimentation tank 2, a circulation device 4 is fixedly connected to the surface of the sedimentation tank 2, a driving mechanism 5 is fixedly connected to the surface of the sedimentation tank 2, a filtering mechanism 6 is arranged on the side of the circulation device 4, a separating mechanism 7 is installed on the side of the filtering mechanism 6, and a cleaning mechanism 8 is arranged on the surface of the sedimentation tank 2.

[0029] The circulation device 4 includes a support frame 41, which is fixedly connected to the surface of the sedimentation tank 2. A cross 42 is rotatably connected to the side of the support frame 41. An annular slide 43 is fixedly connected to the side of the support frame 41. An arc rack 44 is fixedly connected to the side of the annular slide 43. A bevel rod 45 is fixedly connected to the side of the annular slide 43. An inclined panel 46 is fixedly connected to the surface of the sedimentation tank 2. All ends of the cross 42 are rotatably connected to a rotating rod 47. The other end of the rotating rod 47 is rotatably connected to a slider 48. The slider 48 is slidably connected inside the annular slide 43. The driving mechanism 5 includes a driving motor 51, which is fixed to the surface of the sedimentation tank 2. One end of the output shaft of the driving motor 51 is fixedly connected to an intermittent rotating rod 53, and one end of the axis of the cross 42 is fixedly connected to an intermittent wheel 52.

[0030] The filter mechanism 6 includes a filter cartridge 61, which is fixedly connected to one end of a rotating rod 47. A connecting rod 9 is rotatably connected between the two filter cartridges 61. A sealing cover 62 is rotatably connected to the lower end of the filter cartridge 61. A filter screen 63 is slidably connected to the interior of the filter cartridge 61. An extrusion block 64 is slidably connected to the side of the filter cartridge 61. A limited sliding groove 65 is fixedly connected to the side of the filter cartridge 61. A clamping rod 66 is slidably connected to the interior of the limited sliding groove 65. A spring 67 is provided between the clamping rod 66 and the surface of the limited sliding groove 65. The other end of the sealing cover 62 is fixedly connected to a clamping groove 68. When the cross 42 rotates, the rotating rod 47 of the end head is driven to rotate. When the rotating rod 47 rotates, the slider 48 at one end is driven to rotate inside the annular sliding groove 43, and the other end of the rotating rod 47 drives the filter cartridge 61 to rotate. When the filter cartridge 61 rotates, it is limited by the connecting rod 9 and the slider 48, so that the opening of the filter cartridge 61 is always facing upward, thereby preventing the waste water in the filter cartridge 61 from spilling.

[0031] The separation mechanism 7 includes a fixed box 71, which is fixed to the side of the filter cartridge 61, and the side of the filter cartridge 61 is fixedly connected to a bottom plate 72. The fixed box 71 is slidably connected to a U-shaped rod 73, one end of which is fixedly connected to a tooth 74, the fixed box 71 is rotatably connected to a rotating rod 1 75, the surface of which is fixedly connected to a small gear 76, the other end of which is fixedly connected to a long gear 78, the surface of which is fixedly connected to a ratchet 77, the fixed box 71 is rotatably connected to a torsion spring rod 79, the surface of which is fixedly connected to a ratchet 710, the other end of which is fixedly connected to an L-shaped rod 711, the other end of which is fixedly connected to a triangular block 7 12. The other end of the U-shaped rod 73 is fixedly connected to the surface of the filter screen 63, the pinion 76 is meshed with the teeth 74, the ratchet 77 is meshed with the pawl 710, and the pinion 76 is driven to rotate when the rotating rod 75 rotates. When the pinion 76 rotates counterclockwise, the U-shaped rod 73 is driven to move upward through the meshing teeth 74. When the U-shaped rod 73 moves upward, it drives the filter screen 63 at the other end to move upward. When the filter screen 63 moves upward, some solid particles in the wastewater are filtered to prevent them from entering the wastewater, and the solids and liquids in the wastewater are separated for treatment.

[0032] The cleaning mechanism 8 includes a support rod 81, which is fixedly connected to the surface of the sedimentation tank 2. The upper end of the support rod 81 is fixedly connected to a sleeve rod 82, and the sleeve rod 82 is internally rotatably connected to a limit rod 83. One end of the limit rod 83 is fixedly connected to a pulley 84, and a transmission belt 85 is connected between the pulley 84 and the output shaft of the drive motor 51. One end of the sleeve rod 82 is fixedly connected to a transverse slide 86, and the inside of the transverse slide 86 is slidably connected to a sliding rod 87. One end of the sliding rod 87 is fixedly connected to a cleaning brush 88, and the other end of the limit rod 83 is fixedly connected to a disc 89. A slot 810 is provided in the middle, and a round rod 811 is fixedly connected to the surface of the disc 89. The round rod 811 is slidably connected inside the slot 810, and the round rod 811 is driven to rotate when the disc 89 rotates. When the round rod 811 rotates, it pushes and pulls the slot 810. The slot 810 drives the sliding rod 87 to slide left and right inside the horizontal slide groove 86. When the sliding rod 87 slides, it drives the cleaning brush 88 at one end to slide on the surface of the filter screen 63 and clean the solid waste on the surface of the filter screen 63. This can ensure that the filter screen 63 will not be blocked for a long time, thereby further improving the filtering efficiency.

[0033] The use method and advantages of the present invention: The system for producing solid sodium metaaluminate by recycling sodium aluminate wastewater produced by Raney nickel has the following working process when in use:

[0034] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Fig. 9 , Fig.10 , Fig.11 As shown;

[0035] When in use, the preparation of Raney nickel is to treat the nickel-aluminum alloy with a concentrated sodium hydroxide solution. In this process, most of the aluminum will react with the sodium hydroxide to produce sodium aluminate. Then, the Raney nickel wastewater containing sodium aluminate is treated. First, the wastewater outlet 1 discharges the wastewater into the interior of the filter cartridge 61. When the filter cartridge 61 is about to be filled, the wastewater outlet 1 will be temporarily closed, and the drive motor 51 will also be started. The drive motor 51 drives the intermittent rotating rod 53 to rotate. When the filter cartridge 61 is about to be filled, the intermittent rotating rod 53 drives the intermittent wheel 52 to rotate ninety degrees. When the intermittent wheel 52 rotates, it drives the cross 42 to rotate on the side of the support frame 41. When the cross 42 rotates, it drives the rotating rod 47 at the end to rotate. When the rotating rod 47 rotates, it drives the slider 48 at one end to rotate inside the annular slide groove 43, and the other end of the rotating rod 47 drives the filter cartridge 61 to rotate. When the filter cartridge 61 rotates, it is limited by the connecting rod 9 and the slider 48, so that the opening of the filter cartridge 61 is always facing upward, thereby preventing the waste water in the filter cartridge 61 from spilling.

[0036] When the filter cartridge 61 rotates through the cross 42, it drives the long gear 78 on the side to rotate, and the long gear 78 will mesh with the arc-shaped rack 44. The long gear 78 will rotate when it moves on the arc-shaped rack 44. When the long gear 78 rotates counterclockwise, it drives the rotating rod 1 75 to rotate. When the rotating rod 1 75 rotates, it drives the ratchet 77 to rotate. At this time, the ratchet 77 is in the same direction as the pawl 710, so it will not be stuck. When the rotating rod 1 75 rotates, it drives the pinion 76 to rotate. When the pinion 76 rotates counterclockwise, it drives the U-shaped rod 73 to move upward through the meshing teeth 74. When the U-shaped rod 73 moves upward, it drives the filter screen 63 at the other end to move upward. When the filter screen 63 moves upward, it filters some solid particles in the wastewater to prevent them from entering the wastewater, and separates the solids and liquids in the wastewater for treatment.

[0037] At the same time, when the filter screen 63 moves upward, it will squeeze the squeezing block 64. When the squeezing block 64 is squeezed, it will squeeze the inclined surface of the upper end of the clamping rod 66, so that the clamping rod 66 slides downward inside the limiting slide groove 65. When the clamping rod 66 slides, it will separate from the clamping groove 68. At this time, the sealing cover 62 will open by itself through gravity and present an inclined surface. At the same time, the wastewater is discharged from the cylinder of the filter cartridge 61 and enters the interior of the sedimentation tank 2 for later treatment. At the same time, it will be filtered again by the filter screen 3 before flowing into the sedimentation tank 2 to prevent some fine particles from mixing into the wastewater.

[0038] After the cross 42 rotates ninety degrees, the next filter cartridge 61 will reach the lower end of the wastewater outlet 1, and the wastewater outlet 1 will fill the filter cartridge 61 with water again to perform the next round of filtration. This reciprocating cycle operation can prevent wastewater from passing through the filter screen 3 in ordinary filtration, thereby blocking the filter holes and reducing the filtration efficiency.

[0039] When the cross 42 rotates again, it continues to drive the filter cartridge 61 that has just discharged the waste water to rotate ninety degrees. When the filter cartridge 61 rotates, it drives the L-shaped rod 711 on the side to rotate, and the L-shaped rod 711 drives the triangular block 712 to rotate. During the rotation process, the triangular block 712 will be squeezed by the inclined surface rod 45, so that the L-shaped rod 711 rotates clockwise. When the L-shaped rod 711 rotates, it drives the torsion spring rod 79 to rotate. When the torsion spring rod 79 rotates, it drives the pawl 710 to rotate. At this time, the pawl 710 will be separated from the ratchet wheel 77. At this time, the long gear 78 will also be separated from the arc-shaped rack 44, and the filter screen 63 will drop by its own gravity and return to its initial state, ready for the next filtering work. At the same time, the sealing cover 62 will be squeezed by the inclined plate 46, so that the sealing cover 62 is closed at the lower end of the filter cartridge 61, and at the same time, the inclined surface of the lower end of the clamping rod 66 is squeezed. After the inclined surface of the lower end of the clamping rod 66 slides over, the clamping slot 68 will be stuck, and the clamping rod 66 will also be reset by the spring 67.

[0040] During this process, the driving motor 51 is transmitted to the pulley 84 through the transmission belt 85. When the pulley 84 rotates, it drives the limit rod 83 to rotate, and the limit rod 83 rotates in the sleeve rod 82. When the limit rod 83 rotates, it drives the disc 89 to rotate. When the disc 89 rotates, it drives the round rod 811 to rotate. When the round rod 811 rotates, it pushes and pulls the notch 810. The notch 810 drives the sliding rod 87 to slide left and right inside the horizontal slide groove 86. When the sliding rod 87 slides, it drives the cleaning brush 88 at one end to slide on the surface of the filter screen 63 and clean the solid waste on the surface of the filter screen 63. This can ensure that the filter screen 63 will not be blocked for a long time, further improving the filtration efficiency, and when the U-shaped rod 73 rotates, it will pass through the cleaning brush 88 without causing movement obstruction.

[0041] The above shows and describes the basic principles, main features and advantages of the present invention. Technical personnel in this industry should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only preferred examples of the present invention and are not used to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A system for producing solid sodium metaaluminate by recycling sodium aluminate wastewater produced by Raney nickel, comprising a wastewater outlet (1) and a sedimentation tank (2), characterized in that: A detachable filter screen (3) is installed inside the sedimentation tank (2), a circulation device (4) is fixedly connected to the surface of the sedimentation tank (2), a driving mechanism (5) is fixedly connected to the surface of the sedimentation tank (2), a filtering mechanism (6) is arranged on the side of the circulation device (4), a separation mechanism (7) is installed on the side of the filtering mechanism (6), and a cleaning mechanism (8) is arranged on the surface of the sedimentation tank (2); The circulation device (4) comprises a support frame (41), the support frame (41) is fixedly connected to the surface of the sedimentation tank (2), a cross (42) is rotatably connected to the side of the support frame (41), an annular chute (43) is fixedly connected to the side of the support frame (41), an arc-shaped rack (44) is fixedly connected to the side of the annular chute (43), an inclined rod (45) is fixedly connected to the side of the annular chute (43), an inclined panel (46) is fixedly connected to the surface of the sedimentation tank (2), and all ends of the cross (42) are rotatably connected A rotating rod (47) is provided, the other end of the rotating rod (47) is rotatably connected to a slider (48), the slider (48) is slidably connected inside the annular slide groove (43), when the cross (42) rotates, the rotating rod (47) at the end is driven to rotate, when the rotating rod (47) rotates, the slider (48) at one end is driven to rotate inside the annular slide groove (43), and the other end of the rotating rod (47) drives the filter cartridge (61) to rotate, when the filter cartridge (61) rotates, the filter cartridge (61) is limited by the connecting rod (9) and the slider (48), so that the opening of the filter cartridge (61) is always facing upward; The filtering mechanism (6) comprises a filter cartridge (61), wherein the filter cartridge (61) is fixedly connected to one end of a rotating rod (47); after the cross (42) rotates 90 degrees, the next filter cartridge (61) will reach the lower end of the wastewater outlet (1); a connecting rod (9) is rotatably connected between the two filter cartridges (61); a sealing cover (62) is rotatably connected to the lower end of the filter cartridge (61); a filter screen (63) is slidably connected inside the filter cartridge (61); an extrusion block (64) is slidably connected to the side of the filter cartridge (61); a limiting slide groove (65) is fixedly connected to the side of the limiting slide groove (65); and a filter screen (63) is slidably connected inside the limiting slide groove (65). A clamping rod (66), a spring (67) is arranged between the clamping rod (66) and the surface of the limiting slide groove (65), and the other end of the sealing cover (62) is fixedly connected to the clamping groove (68). When the filter screen (63) moves upward, it will squeeze the squeezing block (64). When the squeezing block (64) is squeezed, it will squeeze the inclined surface of the upper end of the clamping rod (66), so that the clamping rod (66) slides downward inside the limiting slide groove (65). When the clamping rod (66) slides, it will separate from the clamping groove (68). At this time, the sealing cover (62) will open by itself due to gravity and present an inclined surface. At the same time, the wastewater is discharged from the cylinder of the filter cartridge (61) and enters the interior of the sedimentation tank (2); The separation mechanism (7) comprises a fixing box (71), wherein the fixing box (71) is fixed to a side surface of the filter cartridge (61), the side surface of the filter cartridge (61) is fixedly connected to a bottom plate (72), the interior of the fixing box (71) is slidably connected to a U-shaped rod (73), one end of the U-shaped rod (73) is fixedly connected to a tooth (74), the interior of the fixing box (71) is rotatably connected to a rotating rod 1 (75), the surface of the rotating rod 1 (75) is fixedly connected to a small gear (76), and the other end of the rotating rod 1 (75) is fixedly connected to a long gear (78), when the filter cartridge (61) rotates through the cross (42), the long gear (78) on the side surface is driven to rotate, and the long gear (78) is meshed with the arc-shaped rack (44), and the long gear (78) is rotated by moving on the arc-shaped rack (44), and when the long gear (78) rotates counterclockwise, it drives the rotating rod 1 (75) to rotate; When the rotating rod (75) rotates, the pinion (76) is driven to rotate. When the pinion (76) rotates counterclockwise, the U-shaped rod (73) is driven to move upward through the meshing teeth (74). When the U-shaped rod (73) moves upward, the filter screen (63) at the other end is driven to move upward. When the filter screen (63) moves upward, some solid particles in the wastewater are filtered.

2. The system for producing solid sodium metaaluminate by recycling sodium aluminate wastewater produced by Raney nickel according to claim 1, characterized in that: The driving mechanism (5) comprises a driving motor (51), the driving motor (51) being fixed on the surface of the sedimentation tank (2), one end of the output shaft of the driving motor (51) being fixedly connected to an intermittent rotating rod (53), and one end of the axis of the cross (42) being fixedly connected to an intermittent wheel (52).

3. The system for producing solid sodium metaaluminate by recycling sodium aluminate wastewater produced by Raney nickel according to claim 1, characterized in that: A ratchet (77) is fixedly connected to the surface of the rotating rod (75), a torsion spring rod (79) is rotatably connected to the interior of the fixed box (71), a ratchet (710) is fixedly connected to the surface of the torsion spring rod (79), an L-shaped rod (711) is fixedly connected to the other end of the torsion spring rod (79), and a triangular block (712) is fixedly connected to the other end of the L-shaped rod (711).

4. The system for producing solid sodium metaaluminate by recycling sodium aluminate wastewater produced by Raney nickel according to claim 1, characterized in that: The cleaning mechanism (8) comprises a support rod (81), the support rod (81) being fixedly connected to the surface of the sedimentation tank (2), the upper end of the support rod (81) being fixedly connected to a sleeve rod (82), the sleeve rod (82) being internally rotatably connected to a limit rod (83), one end of the limit rod (83) being fixedly connected to a pulley (84), a transmission belt (85) being transmission-connected between the pulley (84) and an output shaft of a driving motor (51), one end of the sleeve rod (82) being fixedly connected to a transverse slide groove (86), the interior of the transverse slide groove (86) being slidably connected to a sliding rod (87), one end of the sliding rod (87) being fixedly connected to a cleaning brush (88), the other end of the limit rod (83) being fixedly connected to a disk (89), a notch (810) being provided in the middle of the sliding rod (87), a round rod (811) being fixedly connected to the surface of the disk (89), and the round rod (811) being slidably connected inside the notch (810).

5. The system for producing solid sodium metaaluminate by recycling sodium aluminate wastewater produced by Raney nickel according to claim 3, characterized in that: The other end of the U-shaped rod (73) is fixedly connected to the surface of the filter screen (63), the pinion (76) is meshed with the teeth (74), and the ratchet (77) is meshed with the pawl (710).

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