Printing and dyeing wastewater pretreatment method and device

Abstract

The invention relates to the technical field of printing and dyeing wastewater recovery treatment, and discloses a printing and dyeing wastewater pretreatment method and device, the device comprises a sedimentation tank and an adjusting area, a plurality of inclined iron plates are arranged in the sedimentation tank, a plurality of sludge deposition plate frames are fixedly mounted in the sedimentation tank, and sludge discharge pipes are placed between the sludge deposition plate frames; a fixed shaft body is mounted between every two adjacent inclined iron plates, and an intercepting mechanism is further arranged on each fixed shaft body; each intercepting mechanism comprises two annular disc racks, a plurality of spiral blades are connected between the annular disc racks, and a power unit is arranged on the side wall of the settling pond. The printing and dyeing wastewater pretreatment device rotates under the action of the spiral blades, and in the rotating process of the spiral blades, on one hand, water flowing can be effectively disturbed, and on the other hand, the water flowing can be effectively disturbed; on the other hand, the flocs can be in contact with the spiral blade in the rising process so as to be deposited on the surface of the spiral blade, and flocs particles on the surface of the spiral blade can be effectively treated under the action of the steel cable.

Description

Technical Field

[0001] The invention relates to the technical field of printing and dyeing wastewater recovery and treatment, and in particular to a printing and dyeing wastewater pretreatment method and device. Background Art

[0002] Printing and dyeing wastewater is industrial wastewater generated in the production process of the textile printing and dyeing industry. It mainly comes from processes such as desizing, scouring, bleaching, dyeing, and printing. Printing and dyeing wastewater generally contains dyes (such as reactive dyes, disperse dyes), auxiliaries (penetrants, fixing agents), slurries (such as polyvinyl alcohol), acids, alkalis, inorganic salts and other pollutants. It has the characteristics of complex composition, large water volume, strong volatility and high difficulty in treatment. In order to improve the treatment quality of printing and dyeing wastewater, pretreatment is generally carried out before the treatment of printing and dyeing wastewater to remove large particle pollutants and reduce the load for subsequent treatment; the pretreatment steps mainly include physical interception, chemical treatment and primary precipitation. Physical interception mainly removes large suspended solids such as yarn heads and cloth pieces through grilles and screens. At the same time, under the action of the regulating tank, the water volume and water quality are balanced to buffer water flow fluctuations; After physical interception, the wastewater is chemically treated, and coagulants such as polyaluminium chloride (PAC) and polyferric sulfate (PFS) are added to the wastewater to aggregate the colloidal particles to form flocs. The treated wastewater is then passed to the sedimentation tank. During the process of passing, the water volume regulating unit is used to control the flow of wastewater entering, and then gravity sedimentation is used to separate the flocs (formed by coagulation) in the wastewater, so that the flocs sink naturally. Inclined plates are usually installed in the sedimentation tank, and then the larger flocs will sink to the mud accumulation area at the bottom under the action of gravity. The smaller flocs have a lower sinking speed, so after entering the sedimentation tank, they will follow the water flow into the channel between the inclined plates, and the smaller flocs will be deposited on the surface of the inclined plates. When there are more flocs deposited on the surface of the inclined plates, they will fall to the mud accumulation area at the bottom of the sedimentation tank under the action of gravity. Figure 1 As shown in the figure, in the actual treatment process, some smaller flocs are prone to not contacting the inclined plate due to their low density, small particle size, easy suspension and movement speed dominated by water flow, so there are still many flocs in the water discharged from the sedimentation tank, which affects the sedimentation quality of the sedimentation tank. Therefore, we propose a printing and dyeing wastewater pretreatment method and device. Summary of the invention

[0003] The object of the present invention is to provide a method and device for pre-treating printing and dyeing wastewater to solve the problems raised in the above background technology.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a printing and dyeing wastewater pretreatment device, comprising a sedimentation tank and a regulating area connected to the interior of the sedimentation tank, wherein a plurality of inclined iron plates are symmetrically arranged inside the sedimentation tank, and a plurality of mud accumulation plate racks are fixedly installed inside the sedimentation tank, and mud discharge pipes are placed between adjacent mud accumulation plate racks, and fixed shafts are fixedly installed between adjacent inclined iron plates, and a plurality of interception mechanisms for improving the floc interception rate are also arranged on the fixed shafts; each of the interception mechanisms comprises two annular disc racks, and the two annular disc racks are rotatably connected to the fixed shaft, and a plurality of spiral blades are connected between the annular disc racks, and the spiral blades are located on the flow trajectory of the water flow, and a power unit for adjusting the angle of the inclined iron plate is arranged on the side wall of the sedimentation tank.

[0005] Preferably, each of the spiral blades is provided with a steel cable in contact with its surface, and the steel cable is connected to the two annular disc racks via a plastic shaft, the plastic shaft is slidably connected to the annular disc rack, and a cavity is further provided inside the annular disc rack, wherein the end of the plastic shaft is located in the cavity.

[0006] Preferably, a circular panel is fixedly mounted on the plastic shaft, and a plastic spring is connected between the circular panel and the inner wall of the cavity, a magnet is fixedly mounted on the end of the plastic shaft, and a plurality of magnetic parts are fixedly mounted on the fixed shaft, and the magnetic parts are located on the movement trajectory of the magnet, and the magnetic parts have the same magnetic poles as the magnet.

[0007] Preferably, the fixed shaft is arranged in an inclined state, and the spiral blades are made of high-strength lightweight material.

[0008] Preferably, a plurality of mounting sleeves corresponding to the inclined iron plates are fixedly installed on one side of the sedimentation tank, and connecting shafts are fixedly installed on both sides of the inclined iron plate, one end of the connecting shaft is located inside the mounting sleeve and is rotatably connected to the inner wall of the mounting sleeve; a torsion spring is also connected between the connecting shaft and the inner wall of the mounting sleeve.

[0009] Preferably, the power unit includes a mounting frame fixedly mounted on the side wall of the sedimentation tank, and another connecting shaft on each of the inclined iron plates penetrates the side wall of the sedimentation tank and extends into the interior of the mounting frame. A servo motor is also fixedly mounted on the mounting frame, wherein the output end of the servo motor is transmission-connected to a plurality of connecting shafts via a chain mechanism, and a meshing gear is also fixedly mounted on one of the connecting shafts.

[0010] Preferably, an iron plate frame is provided above each of the inclined iron plates, a rotating shaft body rotatably connected to the side wall of the sedimentation tank is fixedly mounted on the iron plate frame, and one end of the rotating shaft body is located inside the mounting frame, a transmission shaft body rotatably connected to the inner wall of the mounting frame is also installed inside the mounting frame, and a driven gear meshing with the meshing gear is fixedly mounted on the transmission shaft body, and the transmission shaft body and the multiple rotating shaft bodies are connected through a chain mechanism.

[0011] Preferably, a flow guide chamber is provided inside the mud collecting plate frame.

[0012] Preferably, the radius and the number of teeth of the meshing gear are greater than those of the driven gear, and a plurality of spherical intercepting protrusions are fixedly mounted on the surface of the iron plate frame.

[0013] A method for using a printing and dyeing wastewater pretreatment device specifically comprises the following steps: S1: Under the action of the regulating area, the water flow is controlled to enter the sedimentation tank. During the flow, the water flow exerts force on the multiple spiral blades on the fixed shaft, and the spiral blades rotate to interfere with the water flow in the area near the spiral blades, so that the flocs in the water flow move toward the surface of the inclined iron plate; S2: When the spiral blade rotates, the plastic shaft on the annular disc frame rotates synchronously with the annular disc frame. The magnet at the end of the plastic shaft passes through the magnetic part during the movement. The magnet at the end of the plastic shaft is subjected to the repulsive force of the magnetic part, so that the magnet drives the plastic shaft to move downward. During the descent of the plastic shaft, the steel cable is controlled to clean the flocculated sediment on the surface of the spiral blade. S3: Regularly control the servo motor to start, and the output end of the servo motor drives the connecting shaft to rotate through the chain mechanism, and then the inclined iron plate is controlled to adjust the angle under the action of the connecting shaft, so that the inclined iron plate is adjusted to a vertical downward state, and the floc particles on the inclined iron plate sink, and the sinking sediment will fall into the guide chamber in the mud accumulation plate frame, and the sediment entering the guide chamber will be blocked by the inner wall of the guide chamber; S4: During the process of adjusting the angle of the tilted iron plate, the meshing gear on the connecting shaft meshes with the driven gear, so that the transmission shaft rotates. During the rotation process, the transmission shaft drives multiple rotating shafts to rotate synchronously through the chain mechanism 2. During the rotation process, the rotating shaft adjusts the angle of the iron plate frame. The adjusted iron plate frame intercepts the flocs in the water body. S5: Regularly control the mud discharge pipe to absorb the sediment on the mud accumulation plate rack to achieve a cleaning effect.

[0014] Compared with the prior art, the present invention has the following beneficial effects: The present invention can change the distance between the inclined iron plates by changing the angle of the inclined iron plates, thereby changing the flow rate of the water body between the inclined iron plates, and rotate under the action of the spiral blades. During the rotation process, the spiral blades can effectively interfere with the flow of the water body, so that small-volume flocs are more likely to contact the surface of the inclined iron plates. On the other hand, the flocs will contact the spiral blades during the rising process to be deposited on the surface thereof, and under the action of the steel cables, the floc particles on the surface of the spiral blades can be effectively processed to reduce the influence of floc sediment on the spiral blades. The structural design of the present invention can effectively process the flocs in the sedimentation tank to improve the sedimentation quality of the sedimentation tank. The present invention utilizes the magnetic part to generate a repulsive force on the magnet, and under the action of the plastic shaft, controls the steel cable to effectively process the flocculent sediment on the surface of the spiral blade, so that the flocculent sediment on the surface of the spiral blade sinks from under the fixed shaft, thereby improving the sedimentation quality of the sedimentation tank; The iron plate frame in the present invention intercepts floc particles in the water body during the process of adjusting the angle of the inclined iron plate, and after the inclined iron plate returns to its initial position, the floc sediment attached to the iron plate frame will sink under the action of gravity, thereby effectively treating the flocs with smaller volume, and under the action of the diversion chamber, the upward diffusion movement of the flocs can be effectively suppressed, so as to achieve the purpose of improving the sedimentation quality of the sedimentation tank. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the flocs flowing in the inclined iron plate of the present invention; Figure 2 It is a schematic diagram of the overall structure of the present invention; Figure 3 It is a schematic diagram of the location structure of the sedimentation tank and the adjustment area of ​​the present invention; Figure 4 It is a schematic diagram of the internal structure of the sedimentation tank of the present invention; Figure 5 It is a schematic diagram of the internal structure of the mounting sleeve of the present invention; Figure 6 This is a schematic diagram of the structure of the fixed shaft and spiral blades of the present invention; Figure 7 It is a schematic diagram of the structure of the annular disc frame and spiral blades of the present invention; Figure 8 It is a schematic diagram of the internal structure of the fixed shaft and the annular disc rack of the present invention; Fig. 9 It is a schematic diagram of the structure of the plastic shaft body and the fixed shaft body of the present invention; Fig.10 This is a schematic diagram of the tilted iron plate after the angle is adjusted according to the present invention; Fig.11 It is a schematic diagram of the structure of the power unit of the present invention; Fig.12 It is a schematic diagram of the structure of the meshing gear and the driven gear of the present invention.

[0016] In the figure: 1. sedimentation tank; 2. adjustment area; 3. inclined iron plate; 31. connecting shaft; 4. mud accumulation plate frame; 41. diversion chamber; 5. mud discharge pipe; 6. fixed shaft; 61. magnetic part; 7. interception mechanism; 71. annular disc frame; 72. spiral blade; 73. steel cable; 74. plastic shaft; 741. magnet; 75. cavity; 76. circular panel; 77. plastic spring; 8. power unit; 81. mounting frame; 82. servo motor; 83. chain mechanism one; 84. meshing gear; 9. mounting sleeve; 91. torsion spring; 10. iron plate frame; 101. rotating shaft; 102. transmission shaft; 103. driven gear; 104. chain mechanism two; 105. spherical interception bump. DETAILED DESCRIPTION

[0017] 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.

[0018] See also Figure 1-12 The present invention provides a technical solution: a printing and dyeing wastewater pretreatment device, comprising a sedimentation tank 1 and a regulating area 2 connected to the inside of the sedimentation tank 1, the water flow entering the sedimentation tank 1 can be controlled by the regulating area 2, and a plurality of inclined iron plates 3 are symmetrically arranged inside the sedimentation tank 1, each inclined iron plate 3 is fixedly installed with a connecting shaft 31 on both sides, and a plurality of mounting sleeves 9 corresponding to the inclined iron plates 3 are fixedly installed on one side of the sedimentation tank 1, one end of a connecting shaft 31 of each inclined iron plate 3 is located inside the mounting sleeve 9 and is rotatably connected to the inner wall of the mounting sleeve 9; a torsion spring 91 is also connected between the connecting shaft 31 and the inner wall of the mounting sleeve 9, so that the inclined iron plate 3 in the present invention can be angle-adjusted, and the distance between the inclined iron plates 3 can be effectively changed by angle adjustment, combined with the attached Figure 1 As shown, when the angle of the inclined iron plates 3 is adjusted, the spacing between the inclined iron plates 3 will change, and then the flow rate of the water between the inclined iron plates 3 will change. It should be noted that the attached Figure 1The markings are as follows: Vo: axial flow velocity between the inclined iron plates 3 (mm / s); d: vertical spacing between the inclined iron plates 3; b: horizontal spacing between the inclined iron plates 3; L: inclined plate length (m); θ: degree of inclination of the inclined iron plate 3; Vs: rising flow velocity at the outlet of the inclined iron plate 3 (mm / s); Since a torsion spring 91 is fixedly connected between the connecting shaft 31 and the inner wall of the mounting sleeve 9, the rotation stability of the inclined iron plate 3 can be effectively guaranteed under the action of the torsion spring 91 during the angle adjustment process of the inclined iron plate 3; and a plurality of mud accumulation plate racks 4 are fixedly installed inside the sedimentation tank 1, and mud discharge pipes 5 are placed between adjacent mud accumulation plate racks 4, a flow guide chamber 41 is opened inside the mud accumulation plate rack 4, and a fixed shaft 6 is fixedly installed between adjacent inclined iron plates 3, as shown in the attached Figure 4 and attached Figure 6 As shown, the fixed shaft body 6 is installed in a slanted state in the sedimentation tank 1, and a plurality of interception mechanisms 7 for improving the floc interception rate are also arranged on the fixed shaft body 6.

[0019] As a further limitation of the present invention, each interception mechanism 7 includes two annular racks 71, and the two annular racks 71 are rotatably connected to the fixed shaft 6. In order to effectively reduce the friction of the annular racks 71 on the fixed shaft 6, a plurality of balls (not shown in the figure) can be installed in the annular racks 71, and a plurality of spiral blades 72 are fixedly connected between the annular racks 71, and the spiral blades 72 are located on the flow trajectory of the water flow, wherein the spiral blades 72 are made of high-strength lightweight materials, such as polypropylene material, carbon fiber material, combined with the attached Figure 4 As shown, the regulating area 2 controls the water flow to be transported to the sedimentation tank 1. During the flow of the water in the sedimentation tank 1, the larger floc particles will gradually settle on the mud accumulation plate frame 4 at the bottom under the action of gravity, while the smaller floc particles will move upward with the water flow due to their lower settling speed. During the flow of the water, the water flow will exert a force on the spiral blade 72, causing the spiral blade 72 to rotate at an angle. Figure 4 As shown, the spiral blade 72 can effectively interfere with the flow of water during rotation, making it easier for small-volume flocs to contact the surface of the inclined iron plate 3. On the other hand, the flocs will contact the spiral blade 72 during the rising process to be deposited on its surface. When a certain volume of floc particles accumulates on the surface of the spiral blade 72, in order to prevent the weight of the spiral blade 72 from increasing too much and affecting its rotation, the present invention performs the following processing: a steel cable 73 in contact with the surface of each spiral blade 72 is provided, and the steel cable 73 is connected to the two annular disc racks 71 through a plastic shaft 74, and the plastic shaft 74 is slidably connected to the annular disc rack 71. A cavity 75 is also provided inside the annular disc rack 71, wherein the end of the plastic shaft 74 is located in the cavity 75, and a circular panel 76 is also fixedly installed on the plastic shaft 74, and a plastic spring 77 is connected between the circular panel 76 and the inner wall of the cavity 75, and a magnet 741 is fixedly installed on the end of the plastic shaft 74, and a plurality of magnetic parts 61 are also fixedly installed on the fixed shaft 6, and the magnetic part 61 is located on the movement trajectory of the magnet 741, and the magnetic poles of the magnetic part 61 and the magnet 741 are the same.

[0020] Specifically, combined with Figure 2 -Attached Figure 4 As shown, during the application process, under the action of the regulating area 2, the water flow is controlled to enter the sedimentation tank 1. During the flow of the water, a force is applied to the multiple spiral blades 72 on the fixed shaft 6, so that the spiral blades 72 and the mechanical parts of the annular disc frame 71 rotate. During the rotation of the spiral blades 72, they interfere with the water flow in the nearby area, so that the smaller flocs in the water flow move toward the surface of the inclined iron plate 3, so that the smaller flocs are attached to the surface of the inclined iron plate 3. Since the rotation speed of the spiral blades 72 is in a relatively slow state, the spiral blades 72 will also be adhered to the smaller flocs. During the rotation of the spiral blades 72, the plastic shaft 74 on the annular disc frame 71 will also rotate synchronously with the annular disc frame 71. In order to reduce the influence of the flocs (deposited on the spiral blades 72) on the spiral blades 72, the magnet 741 at the end of the plastic shaft 74 will pass through the magnetic portion 61 area during the movement, combined with the attached Figure 8 and attached Fig. 9As shown, the magnetic part 61 is fixedly installed in the lower area of ​​the center of the fixed shaft 6, and then when the magnet 741 at the end of the plastic shaft 74 moves to the magnetic part 61, one of the corresponding spiral blades 72 is located below the fixed shaft 6, and at this time, part of the floccules deposited on the spiral blade 72 will sink under the action of gravity, and the magnet 741 at the end of the plastic shaft 74 will be subjected to the repulsive force of the magnetic part 61, so that the magnet 741 drives the plastic shaft 74 to perform a directional downward movement, and the plastic shaft 74 is in the process of descending. The steel cable 73 will be controlled to clean the flocculated sediments on the surface of the spiral blade 72. When the plastic shaft 74 is descending, the circular panel 76 thereon will compress the plastic spring 77. When the magnet 741 leaves the corresponding position of the magnetic part 61, the plastic shaft will perform a reset movement under the action of the plastic spring 77, so that the steel cable 73 returns to its initial position, and then under the action of the spiral blade 72 of the present invention, the smaller floc particles can be coagulated, and the floc particles on the surface of the spiral blade 72 can be processed under the action of the steel cable 73.

[0021] In the actual application process, since the floc particles have a dense structure and stronger adhesion when the floc particles are fully coagulated, the floc particles on the inclined iron plate 3 accumulate too much. Excessive accumulation of flocs will reduce the water flow channel between the inclined iron plates 3, resulting in a reduction in the water flow area and an increase in the rising flow rate, which is likely to affect the laminar flow state of the water body. In order to facilitate the sinking of the floc particles, the present invention is provided with a power unit 8 for adjusting the angle of the inclined iron plate 3 on the side wall of the sedimentation tank 1, so that the inclined iron plate 3 is adjusted to a vertical downward state, so that the floc particles on the inclined iron plate 3 can sink; As a further limitation of the present invention, the power unit 8 includes a mounting frame 81 fixedly mounted on the side wall of the sedimentation tank 1, and the connecting shaft 31 on each inclined iron plate 3 penetrates the side wall of the sedimentation tank 1 and extends to the inside of the mounting frame 81. A servo motor 82 is also fixedly mounted on the mounting frame 81, wherein the output end of the servo motor 82 is connected to a plurality of connecting shafts 31 through a chain mechanism 83 for transmission connection, and a meshing gear 84 is also fixedly mounted on one of the connecting shafts 31. An iron plate frame 10 is also arranged above each inclined iron plate 3, and the surface of the iron plate frame 10 is also fixedly mounted. A plurality of spherical intercepting protrusions 105 are fixedly installed, a rotating shaft 101 rotatably connected to the side wall of the sedimentation tank 1 is also fixedly installed on the iron plate frame 10, and one end of the rotating shaft 101 is located inside the mounting frame 81, and a transmission shaft 102 rotatably connected to the inner wall thereof is also installed inside the mounting frame 81, and a driven gear 103 meshing with the meshing gear 84 is also fixedly installed on the transmission shaft 102, and the transmission shaft 102 and the plurality of rotating shafts 101 are connected by a chain mechanism 104, and the radius and the number of teeth of the meshing gear 84 are greater than the driven gear 103; Specifically, the servo motor 82 is controlled to start regularly. The start of the servo motor 82 can be regulated by the central control device. Since the central control device is a prior art, the present invention does not describe it in detail. When the servo motor 82 is started, its output end drives the connecting shaft 31 to rotate through the chain mechanism 83, and then the inclined iron plate 3 is controlled to adjust the angle under the action of the connecting shaft 31, so that the inclined iron plate 3 is adjusted to a vertical downward state, so that the floc particles on the inclined iron plate 3 can sink. Fig.10 As shown, when the angle of the inclined iron plate 3 is adjusted to a vertical downward state, the vertical spacing between the inclined iron plates 3 increases, so that the water flow area increases, and the rising flow rate of the floccules decreases. Therefore, the rotation speed of the spiral blade 72 in this state decreases, and the degree of interference with the water body near the spiral blade 72 is reduced. When the angle of the inclined iron plate 3 is adjusted to a vertical downward state, the rotation speed of the spiral blade 72 is reduced, and the sinking of the flocculent sediment is not affected. When the inclined iron plate 3 is adjusted to a vertical downward state, the floccules in the water flow are difficult to contact the surface of the inclined iron plate 3 during the rising process. In the process of adjusting the angle of the inclined iron plate 3, the meshing gear 84 on the connecting shaft 31 meshes with the driven gear 103, so that the transmission shaft 102 rotates. During the rotation process, the transmission shaft 102 drives multiple rotating shafts 101 to rotate synchronously through the chain mechanism 104. The rotating shaft 101 causes the iron plate 3 to rotate synchronously. The angle of the iron plate frame 10 is adjusted, and the adjusted iron plate frame 10 will intercept the flocs in the water body. When the inclined iron plate 3 returns to its initial position, the iron plate frame 10 is in a vertical downward state, and the floc sediment attached to the iron plate frame 10 will sink under the action of gravity; when the angle of the inclined iron plate 3 is adjusted to a vertical downward state, in order to avoid the sediment from colliding with the sediment on the mud plate frame 4 during the falling process, the present invention sets the guide chamber 41 in the mud plate frame 4 to a "short on top and long on the bottom" trapezoidal shape, and then when the sediment on the surface of the inclined iron plate 3 falls, it will fall into the guide chamber 41 in the mud plate frame 4. Since the inner wall of the guide chamber 41 is in a "short on top and long on the bottom" trapezoidal shape, the sediment entering the guide chamber 41 will be hindered by the inner wall of the guide chamber 41 to prevent the flocs from spreading upward, and the mud discharge pipe 5 is regularly controlled to absorb and process the sediment on the mud plate frame 4 to play a cleaning role.

[0022] A method for pre-treating printing and dyeing wastewater, comprising the following steps: S1: Under the action of the regulating area 2, the water flow is controlled to enter the sedimentation tank 1. During the flow, the water flow exerts a force on the multiple spiral blades 72 on the fixed shaft 6, and the spiral blades 72 rotate to interfere with the water flow in the area near the spiral blades 72, so that the flocs in the water flow move toward the surface of the inclined iron plate 3; S2: When the spiral blade 72 rotates, the plastic shaft 74 on the annular disc frame 71 rotates synchronously with the annular disc frame 71. The magnet 741 at the end of the plastic shaft 74 passes through the magnetic portion 61 during the movement. The magnet 741 at the end of the plastic shaft 74 is subjected to the repulsive force of the magnetic portion 61, so that the magnet 741 drives the plastic shaft 74 to move downward. During the downward movement of the plastic shaft 74, the steel cable 73 is controlled to clean the flocculated sediment on the surface of the spiral blade 72. S3: The servo motor 82 is controlled to start regularly, and the output end of the servo motor 82 drives the connecting shaft 31 to rotate through the chain mechanism 83, and then the inclined iron plate 3 is controlled to adjust the angle under the action of the connecting shaft 31, so that the inclined iron plate 3 is adjusted to a vertical downward state, and the floc particles on the inclined iron plate 3 sink, and the sinking sediment will fall into the guide chamber 41 in the mud accumulation plate frame 4, and the sediment entering the guide chamber 41 will be blocked by the inner wall of the guide chamber 41; S4: During the angle adjustment process of the tilted iron plate 3, the meshing gear 84 on the connecting shaft 31 meshes with the driven gear 103, so that the transmission shaft 102 rotates. During the rotation process, the transmission shaft 102 drives multiple rotating shafts 101 to rotate synchronously through the chain mechanism 104. During the rotation process, the rotating shaft 101 adjusts the angle of the iron plate frame 10. The adjusted iron plate frame 10 intercepts the flocs in the water. S5: Regularly control the mud discharge pipe 5 to absorb and process the sediment on the mud accumulation plate frame 4 to achieve a cleaning effect.

[0023] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0024] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A printing and dyeing wastewater pretreatment device, characterized in that: The invention comprises a sedimentation tank (1) and a regulating area (2) connected to the interior of the sedimentation tank (1), wherein a plurality of inclined iron plates (3) are symmetrically arranged inside the sedimentation tank (1), a plurality of mud accumulation plate racks (4) are fixedly installed inside the sedimentation tank (1), and a mud discharge pipe (5) is placed between adjacent mud accumulation plate racks (4), a fixed shaft body (6) is fixedly installed between adjacent inclined iron plates (3), and a plurality of interception mechanisms (7) for improving the floc interception rate are also arranged on the fixed shaft body (6); each of the interception mechanisms (7) comprises two annular disc racks (71), and the two annular disc racks (71) are rotatably connected to the fixed shaft body (6), and a plurality of spiral blades (72) are connected between the annular disc racks (71), and the spiral blades (72) are located on the flow trajectory of the water flow, and a power unit (8) for adjusting the angle of the inclined iron plates (3) is arranged on the side wall of the sedimentation tank (1).

2. A printing and dyeing wastewater pretreatment device according to claim 1, characterized in that: Each of the spiral blades (72) is provided with a steel cable (73) in contact with its surface, and the steel cable (73) is connected to the two annular disc racks (71) via a plastic shaft (74), the plastic shaft (74) and the annular disc rack (71) are slidably connected, and a cavity (75) is further provided inside the annular disc rack (71), wherein an end of the plastic shaft (74) is located in the cavity (75).

3. A printing and dyeing wastewater pretreatment device according to claim 2, characterized in that: A circular panel (76) is also fixedly mounted on the plastic shaft (74), and a plastic spring (77) is connected between the circular panel (76) and the inner wall of the cavity (75). A magnet (741) is fixedly mounted on the end of the plastic shaft (74), and a plurality of magnetic parts (61) are also fixedly mounted on the fixed shaft (6), and the magnetic parts (61) are located on the movement trajectory of the magnet (741), and the magnetic poles of the magnetic parts (61) and the magnet (741) are the same.

4. A printing and dyeing wastewater pretreatment device according to claim 1, characterized in that: The fixed shaft (6) is arranged in an inclined shape, and the spiral blade (72) is made of a high-strength lightweight material.

5. A printing and dyeing wastewater pretreatment device according to claim 1, characterized in that: A plurality of mounting sleeves (9) corresponding to the inclined iron plates (3) are fixedly mounted on one side of the sedimentation tank (1), and connecting shafts (31) are fixedly mounted on both sides of the inclined iron plates (3), wherein one end of the connecting shaft (31) is located inside the mounting sleeve (9) and is rotatably connected to the inner wall of the mounting sleeve (9); a torsion spring (91) is also connected between the connecting shaft (31) and the inner wall of the mounting sleeve (9).

6. A printing and dyeing wastewater pretreatment device according to claim 5, characterized in that: The power unit (8) comprises a mounting frame (81) fixedly mounted on the side wall of the sedimentation tank (1), and another connecting shaft (31) on each of the inclined iron plates (3) penetrates the side wall of the sedimentation tank (1) and extends into the interior of the mounting frame (81). A servo motor (82) is also fixedly mounted on the mounting frame (81), wherein the output end of the servo motor (82) is connected to a plurality of connecting shafts (31) by a chain mechanism (83), and a meshing gear (84) is also fixedly mounted on one of the connecting shafts (31).

7. A printing and dyeing wastewater pretreatment device according to claim 6, characterized in that: An iron plate frame (10) is also provided above each of the inclined iron plates (3), and a rotating shaft (101) is fixedly mounted on the iron plate frame (10) and is rotatably connected to the side wall of the sedimentation tank (1), and one end of the rotating shaft (101) is located inside the mounting frame (81), and a transmission shaft (102) is also mounted inside the mounting frame (81) and is rotatably connected to the inner wall thereof, and a driven gear (103) meshing with the meshing gear (84) is fixedly mounted on the transmission shaft (102), and the transmission shaft (102) and the plurality of rotating shafts (101) are connected in transmission via a second chain mechanism (104).

8. A printing and dyeing wastewater pretreatment device according to claim 7, characterized in that: A flow guide chamber (41) is provided inside the mud accumulation plate frame (4).

9. A printing and dyeing wastewater pretreatment device according to claim 8, characterized in that: The radius and number of teeth of the meshing gear (84) are both greater than those of the driven gear (103), and a plurality of spherical intercepting bumps (105) are fixedly mounted on the surface of the iron plate frame (10).

10. A method for pre-treating printing and dyeing wastewater according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1: Under the action of the regulating area (2), water flow is controlled to enter the sedimentation tank (1). During the flow, the water flow exerts a force on the plurality of spiral blades (72) on the fixed shaft (6), causing the spiral blades (72) to rotate, thereby interfering with the water flow in the vicinity of the spiral blades (72), so that flocs in the water flow move toward the surface of the inclined iron plate (3); S2: During the rotation of the spiral blade (72), the plastic shaft (74) on the annular disc frame (71) rotates synchronously with the annular disc frame (71), and the magnet (741) at the end of the plastic shaft (74) passes through the area of ​​the magnetic portion (61) during the movement. The magnet (741) at the end of the plastic shaft (74) is subjected to the repulsive force of the magnetic portion (61), so that the magnet (741) drives the plastic shaft (74) to move downward, and during the downward movement of the plastic shaft (74), the steel cable (73) is controlled to clean the flocculated sediment on the surface of the spiral blade (72); S3: regularly controlling the servo motor (82) to start, the output end of the servo motor (82) drives the connecting shaft (31) to rotate through the chain mechanism (83), and then the inclined iron plate (3) is controlled to adjust its angle under the action of the connecting shaft (31), so that the inclined iron plate (3) is adjusted to a vertical downward state, and the floc particles on the inclined iron plate (3) sink, and the sinking sediment will fall into the guide chamber (41) in the mud accumulation plate frame (4), and the sediment entering the guide chamber (41) will be blocked by the inner wall of the guide chamber (41); S4: During the process of adjusting the angle of the tilted iron plate (3), the meshing gear (84) on the connecting shaft (31) meshes with the driven gear (103), thereby causing the transmission shaft (102) to rotate. During the rotation process, the transmission shaft (102) drives the plurality of rotating shafts (101) to rotate synchronously via the second chain mechanism (104). During the rotation process, the rotating shaft (101) causes the iron plate frame (10) to adjust its angle. The adjusted iron plate frame (10) intercepts flocs in the water body. S5: Regularly control the mud discharge pipe (5) to absorb the sediment on the mud accumulation plate frame (4) to achieve a cleaning effect.

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