Printing and dyeing wastewater recycling device

Abstract

The invention discloses a printing and dyeing wastewater recycling device, and relates to the field of wastewater treatment device.The printing and dyeing wastewater recycling device comprises a purification cylinder, a feeding part and a through hole are formed in the outer wall of the purification cylinder, a rotating rod penetrates through the through hole, one end of the rotating rod can be driven by a driving part, the other end of the rotating rod is connected with a rotating filter plate, and the rotating filter plate is arranged in the purification cylinder; a plurality of first filter holes are formed in the rotary filter plate and are used for filtering printing and dyeing wastewater at the upper end of the rotary filter plate and then conveying the printing and dyeing wastewater to the lower end of the rotary filter plate; a discharge port is formed in the side wall of the purification cylinder, a groove is formed in the rotary filter plate, a flow guide groove is formed in the groove in a communicating manner, and the flow guide groove extends towards the peripheral edge of the rotary filter plate along the groove. The rotary filter plate is arranged in the purification cylinder, filter residues which do not pass through the first filter holes are driven into the groove or the flow guide groove and are discharged from the discharge port of the purification cylinder through the guide of the flow guide groove, and therefore the purposes of preventing the filter residues from blocking the filter holes and improving the filter efficiency are achieved.

Description

Technical Field

[0001] The invention relates to the field of wastewater treatment devices, and in particular to a printing and dyeing wastewater recycling device. Background Art

[0002] Printing and dyeing wastewater refers to wastewater generated in the textile printing and dyeing process, mainly from various processes, including desizing, bleaching, scouring, dyeing, mercerizing and printing. These wastewaters are characterized by large water volume, high concentration, complex composition, deep color, and some wastewater contains toxic substances, which are difficult to treat organic wastewater. According to statistics, the water consumption for printing and dyeing 1 ton of textiles is about 100-200 tons, of which about 80% becomes wastewater. Printing and dyeing wastewater occupies an important position in my country's industrial wastewater discharge, ranking about the sixth in the country's industrial wastewater discharge, of which 80% belongs to printing and dyeing wastewater. The main pollutants in printing and dyeing wastewater include various fiber materials, dyes, chemicals, heavy metal ions, surfactants and acid-base regulators, etc. These pollutants pose a serious threat to the ecological balance of water bodies, affect the normal growth of aquatic organisms, and may cause potential harm to human health. Therefore, the treatment of printing and dyeing wastewater is particularly important. At present, the treatment methods for printing and dyeing wastewater mainly include physical methods, chemical methods and biological methods. Commonly used physical treatment methods include sedimentation, flotation and filtration, chemical treatment methods include coagulation, oxidation and adsorption, and biological treatment methods include anaerobic and aerobic biological methods. Due to the complex composition of printing and dyeing wastewater, a single treatment method is often difficult to achieve the ideal treatment effect. Therefore, in practical applications, a combination of several methods is usually used to achieve thorough treatment of wastewater.

[0003] Untreated printing and dyeing wastewater generally contains a lot of solid impurities, including fiber impurities, solid impurities generated by the addition of chemical additives, etc. Therefore, before chemical or biological treatment, the solid impurities need to be removed cleanly to prevent the solid impurities from reacting chemically with the added preparations in subsequent treatment to produce new substances, increasing the complexity and purification difficulty of printing and dyeing wastewater. In the current process, the methods used to remove solid impurities in fluids are mainly precipitation and filtration. However, in filtration, due to the complexity of solid impurities in printing and dyeing wastewater, if the filtered solid residue is not discharged in time, it is easy to clog the filter holes and affect the efficiency of filtration.

[0004] In view of this, this application is hereby filed. Summary of the invention

[0005] The object of the present invention is to provide a printing and dyeing wastewater recycling device, by arranging a rotating filter plate in a purification cylinder, the rotating filter plate can be driven to rotate, drive the filter residue that has not passed through the first filter hole into a groove or a guide groove, and discharge it from the discharge port of the purification cylinder through the guidance of the guide groove, so as to solve the problem in the prior art that the filter residue is not discharged in time and blocks the filter hole, thereby affecting the filtration efficiency.

[0006] The embodiment of the present invention is realized by the following technical scheme: the embodiment of the present invention provides a printing and dyeing wastewater recycling device, including a purification cylinder, wherein an inlet member and a through hole are arranged on the outer wall of the purification cylinder, the inlet member is arranged to inject the printing and dyeing wastewater into the purification cylinder, a rotating rod is arranged through the through hole, one end of the rotating rod can be driven by a driving member, and the other end is connected to a rotating filter plate, the rotating filter plate is arranged inside the purification cylinder, and the rotating rod can drive the rotating filter plate to rotate in the purification cylinder;

[0007] The rotary filter plate is provided with a plurality of first filter holes, and the first filter holes are configured to filter the printing and dyeing wastewater on the upper end of the rotary filter plate and then transport it to the lower end of the rotary filter plate;

[0008] A discharge port is arranged on the side wall of the purification cylinder, a groove with an upper opening is arranged on the rotating filter plate, a guide groove is arranged in communication with the groove, and the guide groove is arranged to extend along the groove toward the outer peripheral edge of the rotating filter plate;

[0009] The rotary filter plate is configured to drive the filter residue that has not passed through the first filter hole into the groove and / or the guide groove by rotation, and then discharge it from the discharge port of the purification cylinder under the guidance of the guide groove.

[0010] Preferably, the upper surface of the rotating filter plate is a centrally concave structure, and the groove is arranged at the center of the rotating filter plate, the bottom of the side where the guide groove communicates with the groove is flush with the bottom of the groove, and the guide groove gradually slopes downward toward the peripheral edge of the rotating filter plate;

[0011] The groove and the bottom of the guide groove are both sealed structures.

[0012] Preferably, the cross section of the rotating filter plate is circular, the inner cavity of the purification cylinder is cylindrical, an annular limiting groove is provided on the inner wall of the purification cylinder, an annular convex block is provided on the side of the rotating filter plate, the annular convex block is arranged in the annular limiting groove, and the annular convex block can rotate in the annular limiting groove;

[0013] When the outer edge of the guide groove moves to the discharge port, the filter residue is discharged from the purification cylinder through the discharge port.

[0014] Preferably, a motor is provided on the outer wall of the purification cylinder, the motor is located at the through hole and connected to the rotating rod, and the motor is used to drive the rotating rod to drive the rotating filter plate to rotate.

[0015] Preferably, an inclined plate is provided on the bottom edge of the discharge port, and the recycling device further comprises a filter residue collection box, and the inclined plate is located inside the inclined plate.

[0016] Preferably, a filter area is provided on the wall of the purification cylinder, and a plurality of second filter holes are provided on the filter area, and the filter area is located below the rotating filter plate;

[0017] The filtration area is connected to a first purification box, and the filtration area is configured to filter the dye liquor after being filtered by the rotating filter plate. The filtered dye liquor enters the first purification box, and the filter residue that does not pass through the second filter hole will settle at the bottom of the purification cylinder;

[0018] The aperture of the second filter hole is smaller than that of the first filter hole. A first control valve is arranged at the lower part of the purification cylinder. The first control valve is used to discharge the filter residue precipitated on the bottom wall of the purification cylinder.

[0019] Preferably, a leaching plate is provided on the top of the first purification box, and a third filter hole is provided on the leaching plate. The aperture of the third filter hole is smaller than the aperture of the second filter hole. The top of the leaching plate is connected to the second purification box. The first purification box is configured to further filter the dye solution and then leaching it to the second purification box, and the filter residue that has not passed through the third filter hole is precipitated to the bottom of the first purification box.

[0020] Preferably, the side wall of the second purification box is connected to the third purification box, a purification component is arranged between the second purification box and the third purification box, and activated carbon is arranged in the purification component.

[0021] Preferably, a second control valve is provided at the bottom of the first purification box, and a third control valve is provided at the bottom of the third purification box.

[0022] Preferably, the bottom of the purification element is flush with the top of the leaching plate, and the bottom of the third purification box is lower than the bottom of the purification element.

[0023] Compared with the prior art, the embodiments of the present invention have the following advantages and beneficial effects:

[0024] 1. The printing and dyeing wastewater recycling device provided by the embodiment of the present invention forms a mechanical connection by connecting one end of the rotating rod to the driving member and the other end to the rotating filter plate to transmit power. The rotating filter plate is fixed on the rotating rod and connected to the driving member through the rotating rod to realize the rotating action. The groove and the guide groove are integrated with the rotating filter plate to form a continuous slag discharge channel. The first filter hole of the rotating filter plate intercepts the solid impurities in the printing and dyeing wastewater during the rotation process, and the clean water flows into the lower end of the filter plate through the filter hole. The rotating action of the rotating filter plate pushes the filter residue to the groove and the guide groove, and then guides the filter residue to the discharge port through the guide groove for discharge. The operator can control the continuous rotation of the rotating filter plate to realize the continuous collection and discharge of the filter residue without frequent manual cleaning. During the operation, the edge of the guide groove can be rotated to a position misaligned with the discharge port, so that the discharge port can be blocked to prevent the printing and dyeing wastewater from being discharged in advance, and then the printing and dyeing wastewater is injected from the top of the rotating filter plate through the feeding piece. After the printing and dyeing wastewater on the rotating filter plate is filtered, the driving part is started to drive the rotating filter plate to rotate, and the filter residue above is discharged. Then the rotating filter plate is rotated to a position where the edge of the guide groove is misaligned with the discharge port, and the printing and dyeing wastewater is continued to be injected and filtered from the top of the rotating filter plate through the feeding piece. This structure realizes the effective filtration of printing and dyeing wastewater and the automatic discharge of solid impurities, improves the automation level and efficiency of wastewater treatment, and reduces the operating cost. After the filtered printing and dyeing wastewater is chemically and / or biologically treated, it can be recycled for printing and dyeing process.

[0025] 2. In the embodiment of the present invention, the upper surface of the rotating filter plate is set as a central concave structure, and the groove is set at the center of the rotating filter plate, which helps to drive the filter residue to the groove in a concentrated manner. The bottom of the groove and the guide groove are both sealed structures, and some liquid can be retained in the groove and the guide groove. In this way, the guide groove and the groove are connected and matched, and combined with the structure of the guide groove tilted downward along the outside, the filter residue is more easily discharged through the guide groove driven by a small amount of liquid. By setting a liquid-assisted discharge mechanism, the friction of the filter residue during the discharge process is reduced, making the discharge process smoother and reducing the risk of blockage. The inclined guide groove setting helps the flow of liquid and further promotes the discharge of the filter residue.

[0026] 3. The embodiment of the present invention ensures that the rotating filter plate maintains the correct position and alignment during rotation by cooperating the annular limiting groove provided on the inner wall of the purification cylinder with the annular protrusion on the side of the rotating filter plate, thereby preventing the filter plate from deviating from the center or colliding with the inner wall of the purification cylinder. At the same time, during the rotation of the rotating filter plate, the inner wall of the purification cylinder can act as a baffle around the rotating filter plate, that is, while ensuring the stable rotation of the rotating filter plate, less filter residue enters the gap between the rotating filter plate and the inner wall of the purification cylinder, so that the filter residue can only be discharged from the discharge port, thereby avoiding the random scattering of the filter residue and potential equipment damage.

[0027] 4. The embodiment of the present invention realizes graded filtration by controlling the size of the filter holes. Since the filter area is set at the bottom of the purification cylinder, it has both sedimentation and filtration functions. The fluid passing through the second filter hole will enter the first purification box, and the fluid and solid that have not passed through the second filter hole can be discharged through the first control valve. At the same time, a leaching plate is set on the top of the first purification box. Since the third filter hole has a smaller aperture than the first filter hole and the second filter hole, it is theoretically easier to clog. However, the embodiment of the present invention is set to leaching, and solid impurities will precipitate in the first purification box, reducing the risk of clogging of the leaching plate and improving the filtration efficiency and purification degree.

[0028] In general, the printing and dyeing wastewater recycling device provided by the embodiments of the present invention, by arranging a rotating filter plate in the purification cylinder, the rotating filter plate can be driven to rotate, and the filter residue that has not passed through the first filter hole is driven into the groove or the guide groove, and is discharged from the discharge port of the purification cylinder through the guidance of the guide groove, so as to prevent the filter residue from clogging the filter hole and improve the filtration efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0030] Figure 1 A schematic diagram of an open structure of a purification cartridge of a wastewater recycling device provided by an embodiment of the present invention;

[0031] Figure 2 A schematic diagram of the purification cartridge structure provided by an embodiment of the present invention;

[0032] Figure 3 A schematic diagram of the structure of a wastewater recycling device provided by an embodiment of the present invention;

[0033] Figure 4 A schematic diagram of the structure of a rotary filter plate provided in an embodiment of the present invention.

[0034] Marks and corresponding parts names in the attached drawings:

[0035] 1-purification cylinder, 2-feeding piece, 3-through hole, 4-rotating rod, 5-rotating filter plate, 6-first filter hole, 7-discharge port, 8-groove, 9-guide groove, 10-annular limit groove, 11-annular protrusion, 12-motor, 13-inclined plate, 14-filter residue collection box, 15-filtration area, 16-second filter hole, 17-first purification box, 18-first control valve, 19-leaching plate, 20-third filter hole, 21-second purification box, 22-third purification box, 23-purification piece, 24-second control valve, 25-third control valve. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0037] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. 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.

[0038] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0039] In the description of the present invention, it should be noted that the terms "first", "second", "third", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0040] Example

[0041] like Figure 1-2As shown, the embodiment of the present invention provides a printing and dyeing wastewater recycling device, including a purification cylinder 1, an outer wall of the purification cylinder 1 is provided with a feed piece 2 and a through hole 3, the feed piece 2 is configured to inject the printing and dyeing wastewater into the purification cylinder 1, a rotating rod 4 is penetrated in the through hole 3, one end of the rotating rod 4 can be driven by a driving member, and the other end is connected to a rotating filter plate 5, the rotating filter plate 5 is arranged inside the purification cylinder 1, and the rotating rod 4 can drive the rotating filter plate 5 to rotate in the purification cylinder 1; a plurality of first filter holes 6 are provided on the rotating filter plate 5, and the first filter holes 6 are provided on the rotating filter plate 5. A filter hole 6 is arranged to filter the printing and dyeing wastewater at the upper end of the rotating filter plate 5 and then transport it to the lower end of the rotating filter plate 5; a discharge port 7 is arranged on the side wall of the purification cylinder 1, and a groove 8 with an upper end opening is arranged on the rotating filter plate 5, and a guide groove 9 is connected to the groove 8, and the guide groove 9 is extended along the groove 8 to the outer peripheral edge of the rotating filter plate 5; the rotating filter plate 5 is arranged to drive the filter residue that has not passed through the first filter hole 6 into the groove 8 and / or the guide groove 9 by rotation, and then discharge it from the discharge port 7 of the purification cylinder 1 under the guidance of the guide groove 9.

[0042] Specifically, the purification cylinder 1 is used to accommodate printing and dyeing wastewater and provide filtering operations. The feed piece 2 introduces the printing and dyeing wastewater into the purification cylinder 1 and is the entrance for wastewater treatment. A rotating rod 4 is arranged in the through hole 3 for connecting the driving member and the rotating filter plate 5 to realize the rotation of the rotating filter plate 5. The rotating filter plate 5 is installed inside the purification cylinder 1 to realize the centralized collection of solid impurities through rotation. The discharge port 7 is arranged on the side wall of the purification cylinder 1 to discharge solid impurities that have not passed through the first filter hole 6. The groove 8 and the guide groove 9 are used to collect and guide the filter residue that has not passed through the first filter hole 6 to ensure that it is smoothly discharged from the purification cylinder 1. When in use, the operator first ensures that the edge of the guide groove 9 is misaligned with the discharge port 7, blocks the discharge port 7, and prevents the printing and dyeing wastewater from being discharged in advance, and then injects the printing and dyeing wastewater from the top of the rotating filter plate 5 into the purification cylinder 1 through the feed piece 2 to achieve the filtration of the printing and dyeing wastewater, and the solid impurities are trapped on the rotating filter plate 5. After the filtration is completed, the driving part is started, and the rotating filter plate 5 rotates to guide the filter residue to the discharge port 7 through the guide groove 9 for discharge. After the filter residue is discharged, the rotating filter plate 5 is rotated again to the position where the edge of the guide groove 9 is misaligned with the discharge port 7, and the discharge port 7 is blocked, and then the process of injection, filtration and discharge is repeated. This structure realizes the effective filtration of printing and dyeing wastewater and the automatic discharge of solid impurities, improves the automation level and efficiency of wastewater treatment, and at the same time reduces the operating cost and avoids the phenomenon that the filter residue cannot be discharged in time and causes the rotating filter plate 5 to be blocked. It should be noted that in order to prevent the sealing of the rotating filter plate 5 to the discharge port 7 from being low, a movable cover can be set at the discharge port 7, and the discharge port 7 is opened when the rotating filter plate 5 needs to be rotated to discharge the filter residue.

[0043] In order to improve the concentration efficiency and discharge efficiency of the rotary filter plate 5 on the filter residue, the upper surface of the rotary filter plate 5 can be set to a central concave structure, and the groove 8 is set at the center of the rotary filter plate 5, the bottom of the guide groove 9 on the side connected to the groove 8 is level with the bottom of the groove 8, and the guide groove 9 gradually tilts downward toward the peripheral edge of the rotary filter plate 5; the bottom of the groove 8 and the guide groove 9 are both sealed structures. Specifically, the upper surface of the rotary filter plate 5 is set to a central concave, and the groove 8 is set at the center of the rotary filter plate 5, which can efficiently concentrate the filter residue in the groove 8. At the same time, the bottom of the groove 8 and the guide groove 9 are both sealed structures, and part of the liquid can be retained in the groove 8 and the guide groove 9. This structure can use the liquid-assisted discharge mechanism when the guide groove 9 is connected and matched with the groove 8, so as to reduce the friction of the filter residue during the discharge process, making the discharge process smoother. The retained liquid can be used as a lubricant to reduce the friction of the filter residue during the discharge process. At the same time, the inclined guide groove 9 is set to help the flow of liquid, further promote the discharge of the filter residue, and reduce the risk of blockage. In the embodiment of the present invention, since the upper surface of the rotating filter plate 5 is set as a structure concave toward the center, it can be ensured that the rotating filter plate 5 collects the filter residue in the groove 8 during the rotation process, reducing the possibility of the filter residue sticking to the inner wall of the purification cylinder. At the same time, since the bottom of the groove 8 is sealed, part of the liquid can be collected in the groove 8 and form a flowing mixture with the filter residue, and then flowed out through the guide groove 9, and then discharged from the discharge port 7. This structure simultaneously utilizes the guiding effect of the rotating filter plate 5 and the guide groove 9, and cooperates with the fluid to increase the fluidity of the filter residue, and discharges the filter residue from the discharge port 7. This process can be realized by only rotating the filter plate 5 to keep rotating, without setting additional driving components to drive the filter residue to discharge the purification cylinder 1, and without adding additional pure water to clean and dredge the filter plate, and at the same time, it will not affect the efficiency of the filtration of the through hole 3. It is important that the filter residue of the embodiment of the present invention can be discharged automatically and continuously, without increasing the load-bearing burden of the rotating filter plate 5 and the increase of the rotation power consumption, thereby improving the flexibility and automation of the entire device.

[0044] As a preferred embodiment of the present invention, Figure 1 and Figure 4As shown, the cross-section of the rotating filter plate 5 is circular, the inner cavity of the purification cylinder 1 is cylindrical, an annular limiting groove 10 is provided on the inner wall of the purification cylinder 1, and an annular protrusion 11 is provided on the side of the rotating filter plate 5. The annular protrusion 11 is arranged in the annular limiting groove 10, and the annular protrusion 11 can rotate in the annular limiting groove 10; when the outer edge of the guide groove 9 moves to the discharge port 7, the filter residue is discharged from the purification cylinder 1 from the discharge port 7. Specifically, the cross-section of the rotating filter plate 5 is circular, which matches the inner cavity of the cylindrical purification barrel 1, ensuring that the rotating filter plate 5 can rotate smoothly inside the purification barrel 1, and the annular limiting groove 10 set on the inner wall of the purification barrel 1 and the annular protrusion 11 set on the side of the rotating filter plate 5 cooperate to ensure that the rotating filter plate 5 remains in the correct position in the center of the purification barrel 1 during rotation to prevent deviation or collision with the inner wall of the purification barrel 1. The annular protrusion 11 can rotate freely in the annular limiting groove 10, and the inner wall of the purification barrel 1 acts as a baffle during the rotation of the rotating filter plate 5 to prevent the filter residue from entering the gap between the rotating filter plate 5 and the inner wall of the purification barrel 1, ensuring that the filter residue will not be scattered at will inside the purification barrel 1. Since the filter residue is confined to the specific area of ​​the rotating filter plate 5 and the guide groove 9, it can only be discharged through the discharge port 7, which avoids the random scattering of the filter residue and keeps the inside of the purification barrel 1 clean. Reducing the amount of filter residue that enters the gap between the rotating filter plate 5 and the inner wall of the purification cylinder 1 can reduce the maintenance requirements of the equipment. Since the filter residue is effectively discharged from the discharge port 7, the filter holes on the rotating filter plate 5 will not be blocked due to the accumulation of filter residue, thereby maintaining the filtration efficiency.

[0045] Exemplarily, a motor 12 is provided on the outer wall of the purification cylinder 1, and the motor 12 is located at the through hole 3 and connected to the rotating rod 4. The motor 12 is used to drive the rotating rod 4 to drive the rotating filter plate 5 to rotate. The motor 12 is installed on the outer wall of the purification cylinder 1, located at the through hole 3, so that the motor 12 can be easily connected to the rotating rod 4, while maintaining the compactness of the equipment and the convenience of operation. The main function of the motor 12 is to provide power, drive the rotating rod 4, and then drive the rotating filter plate 5 to rotate in the purification cylinder 1. The rotating action of the rotating filter plate 5 pushes the filter residue to the groove 8 and the guide groove 9, and then guides the filter residue to the discharge port 7 through the guide groove 9 to discharge the purification cylinder 1. The use of the motor 12 allows the entire filtering and slag discharge process to be automated, reduces manual intervention, and improves the efficiency and safety of the operation. The operator can control the rotation speed and filtering process of the rotating filter plate 5 by controlling the start, stop and speed of the motor 12 to adapt to different filtering requirements.

[0046] Furthermore, if Figure 3As shown, an inclined plate 13 is provided on the bottom edge of the discharge port 7, and the recycling device also includes a filter residue collection box 14, and the inclined plate 13 is located inside the inclined plate 13. The inclined plate 13 is provided on the bottom edge of the discharge port 7 to help guide the filter residue to be discharged smoothly from the purification cylinder 1. The inclined plate 13, as a guiding structure, can promote the filter residue to slide down along the inclined surface, reduce the obstruction of the filter residue during the discharge process, and ensure that the filter residue can smoothly enter the filter residue collection box 14. The filter residue collection box 14 is used to collect the filter residue discharged from the purification cylinder 1, and is arranged below the discharge port 7 to directly receive the discharged solid impurities. This structure reduces the possibility of filter residue scattering, and also reduces the difficulty of cleaning and maintenance of the equipment operation area.

[0047] In order to improve the thoroughness of solid removal from printing and dyeing wastewater, the embodiment of the present invention is provided with a filter area 15 on the wall of the purification cylinder 1, and the filter area 15 is provided with more than one second filter hole 16, and the filter area 15 is located below the rotating filter plate 5; the filter area 15 is connected to a first purification box 17, and the filter area 15 is configured to filter the dye liquor after being filtered by the rotating filter plate 5, and the filtered dye liquor enters the first purification box 17, and the filter residue that does not pass through the second filter hole 16 will be precipitated at the bottom of the purification cylinder 1; the aperture of the second filter hole 16 is smaller than the first filter hole 6, and the lower part of the purification cylinder 1 is provided with a first control valve 18, and the first control valve 18 is used to discharge the filter residue precipitated on the bottom wall of the purification cylinder 1. Specifically, the filter area 15 is equipped with a plurality of second filter holes 16, and the function of the second filter holes 16 is to further filter the printing and dyeing wastewater after preliminary filtration by the rotating filter plate 5. The filter area 15 is located below the rotating filter plate 5, ensuring that after the wastewater passes through the first stage of filtration of the rotating filter plate 5, it continues to pass through the filter area 15 for secondary filtration. The filter area 15 is connected to the first purification box 17, and the printing and dyeing wastewater (dye liquor) that has passed the secondary filtration flows into the first purification box 17 for further purification treatment. The aperture of the second filter hole 16 is smaller than the first filter hole 6. Such a design allows finer filtration and removal of finer impurities. The filter residue that does not pass through the second filter hole 16 will settle at the bottom of the purification cylinder 1. Due to the action of gravity, heavier solid particles will settle at the bottom. A first control valve 18 is provided at the lower part of the purification cylinder 1. The valve is used to control the discharge of the filter residue settled at the bottom of the purification cylinder 1 to ensure cleaning at an appropriate time. By operating the first control valve 18, the filter residue settled at the bottom of the purification cylinder 1 can be discharged regularly or on demand to maintain the cleanliness and filtration efficiency of the purification cylinder 1.

[0048] Furthermore, a leaching plate 19 is provided on the top of the first purification box 17, and a third filter hole 20 is provided on the leaching plate 19. The aperture of the third filter hole 20 is smaller than the aperture of the second filter hole 16. The upper part of the leaching plate 19 is connected to the second purification box 21. The first purification box 17 is configured to further filter the dye liquor and leach it to the second purification box 21, and to precipitate the filter residue that has not passed through the third filter hole 20 to the bottom of the first purification box 17. Specifically, the third filter hole 20 can capture finer impurities and achieve deeper filtration. The filtered dye liquor enters the second purification box 21 connected to the upper part of the leaching plate 19 through the third filter hole 20 for further processing or storage. The filter residue that has not passed through the third filter hole 20 will settle at the bottom of the first purification box 17. Due to the action of gravity, these heavier solid particles will settle at the bottom of the box. Although the third filter hole 20 has a small pore size and is theoretically more susceptible to clogging, in an embodiment of the present invention, by setting the first purification box 17 to a leaching mode, solid impurities are precipitated in the box instead of directly passing through the third filter hole 20, thereby effectively reducing the risk of clogging of the leaching plate 19. Since the third filter hole 20 can remove finer impurities and the precipitation of solid impurities reduces the clogging of the filter hole, the purification degree of the dye solution is improved and the water quality is cleaner.

[0049] As a preferred implementation of the embodiment of the present invention, the side wall of the second purification box 21 is connected to the third purification box 22, and a purification part 23 is arranged between the second purification box 21 and the third purification box 22, and activated carbon is arranged in the purification part 23. Specifically, the side wall of the second purification box 21 is connected to the third purification box 22, and this structure allows the water treated by the second purification box 21 to flow directly into the third purification box 22, so as to realize a continuous purification process. The purification part 23 is filled with activated carbon, which is a highly efficient adsorbent that can remove organic matter, chlorine, odor, pigment and other impurities in water, and improve the purity of water quality. The adsorption of activated carbon can effectively remove residual chlorine and odor in water, and reduce organic pollutants at the same time. The water purified by activated carbon will further remove tiny particles and soluble pollutants that may cause water quality problems, thereby improving the transparency and sensory quality of water. More preferably, the bottom of the purification part 23 is level with the top of the leaching plate 19, and the bottom of the third purification box 22 is lower than the bottom of the purification part 23. The bottom of the purification element is level with the top of the leaching plate 19, ensuring that the dye liquor filtered by the leaching plate 19 can flow directly into the purification element 23 for the next step of treatment, which helps to maintain the continuity of the water flow and reduce pressure loss. The bottom of the third purification box 22 is lower than the bottom of the purification element 23. This structure allows the water in the purification element 23 to flow into the third purification box 22 by gravity, without the need for additional pumping equipment, reducing energy consumption and maintenance costs. A second control valve 24 can be set at the bottom of the first purification box 17, and a third control valve 25 can be set at the bottom of the third purification box 22. The second control valve 24 is mainly used to control the discharge of the filter residue precipitated at the bottom of the first purification box 17, and the third control valve 25 is used to control the liquid discharge at the bottom of the third purification box 22 for subsequent chemical and biological purification. The purified water can be reused in the printing and dyeing process, which improves the utilization rate of water resources and avoids the impact of sewage discharge on the environment.

[0050] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention. It should be noted that the structures or components illustrated in the accompanying drawings are not necessarily drawn to scale, and the present invention omits the description of known components and processing technologies and processes to avoid unnecessary limitations on the present invention.

Claims

1. A printing and dyeing wastewater recycling device, characterized in that: The invention comprises a purification cylinder (1), wherein an inlet member (2) and a through hole (3) are arranged on the outer wall of the purification cylinder (1), wherein the inlet member (2) is arranged to inject printing and dyeing wastewater into the purification cylinder (1), wherein a rotating rod (4) is arranged through the through hole (3), wherein one end of the rotating rod (4) can be driven by a driving member, and the other end is connected to a rotating filter plate (5), wherein the rotating filter plate (5) is arranged inside the purification cylinder (1), and wherein the rotating rod (4) can drive the rotating filter plate (5) to rotate inside the purification cylinder (1); The rotary filter plate (5) is provided with a plurality of first filter holes (6), and the first filter holes (6) are configured to filter the printing and dyeing wastewater at the upper end of the rotary filter plate (5) and then transport it to the lower end of the rotary filter plate (5); The side wall of the purification cylinder (1) is provided with a discharge port (7), the rotating filter plate (5) is provided with a groove (8) with an upper end opening, the groove (8) is connected with a guide groove (9), and the guide groove (9) is extended along the groove (8) toward the outer peripheral edge of the rotating filter plate (5); The rotating filter plate (5) is configured to drive the filter residue that has not passed through the first filter hole (6) into the groove (8) and / or the guide groove (9) by rotation, and then discharge it from the discharge port (7) of the purification cylinder (1) under the guidance of the guide groove (9).

2. A printing and dyeing wastewater recycling device according to claim 1, characterized in that: The upper surface of the rotating filter plate (5) is a centrally concave structure, and the groove (8) is arranged at the center of the rotating filter plate (5); the bottom of the guide groove (9) on the side communicating with the groove (8) is flush with the bottom of the groove (8), and the guide groove (9) gradually slopes downward toward the outer peripheral edge of the rotating filter plate (5); The bottoms of the groove (8) and the guide groove (9) are both sealed structures.

3. A printing and dyeing wastewater recycling device according to claim 2, characterized in that: The cross section of the rotating filter plate (5) is circular, the inner cavity of the purification cylinder (1) is cylindrical, an annular limiting groove (10) is provided on the inner wall of the purification cylinder (1), an annular convex block (11) is provided on the side surface of the rotating filter plate (5), the annular convex block (11) is arranged in the annular limiting groove (10), and the annular convex block (11) can rotate in the annular limiting groove (10); When the outer edge of the guide groove (9) moves to the discharge port (7), the filter residue is discharged from the purification cylinder (1) through the discharge port (7).

4. The printing and dyeing wastewater recycling device according to claim 1 is characterized in that: A motor (12) is provided on the outer wall of the purification cylinder (1); the motor (12) is located at the through hole (3) and is connected to the rotating rod (4); the motor (12) is used to drive the rotating rod (4) to drive the rotating filter plate (5) to rotate.

5. The printing and dyeing wastewater recycling device according to claim 1 is characterized in that: An inclined plate (13) is provided on the bottom edge of the discharge port (7), and the recycling device further comprises a filter residue collection box (14), wherein the inclined plate (13) is located inside the inclined plate (13).

6. The printing and dyeing wastewater recycling device according to claim 1 is characterized in that: A filter area (15) is provided on the wall of the purification cylinder (1), and a plurality of second filter holes (16) are provided on the filter area (15). The filter area (15) is located below the rotating filter plate (5); The filtration area (15) is connected to a first purification box (17), and the filtration area (15) is configured to filter the dye liquor after being filtered by the rotating filter plate (5). The filtered dye liquor enters the first purification box (17), and the filter residue that does not pass through the second filter hole (16) will settle at the bottom of the purification cylinder (1); The aperture of the second filter hole (16) is smaller than that of the first filter hole (6), and a first control valve (18) is provided at the lower part of the purification cylinder (1), and the first control valve (18) is used to discharge the filter residue precipitated on the bottom wall of the purification cylinder (1).

7. A printing and dyeing wastewater recycling device according to claim 6, characterized in that: A leaching plate (19) is arranged on the top of the first purification box (17), and a third filter hole (20) is arranged on the leaching plate (19). The aperture of the third filter hole (20) is smaller than the aperture of the second filter hole (16). The top of the leaching plate (19) is connected to the second purification box (21). The first purification box (17) is configured to further filter the dye solution and then leaching it to the second purification box (21), and to precipitate the filter residue that has not passed through the third filter hole (20) to the bottom of the first purification box (17).

8. The printing and dyeing wastewater recycling device according to claim 7, characterized in that: The side wall of the second purification box (21) is connected to a third purification box (22), a purification element (23) is arranged between the second purification box (21) and the third purification box (22), and activated carbon is arranged in the purification element (23).

9. The printing and dyeing wastewater recycling device according to claim 3, characterized in that: A second control valve (24) is provided at the bottom of the first purification box (17), and a third control valve (25) is provided at the bottom of the third purification box (22).

10. The printing and dyeing wastewater recycling device according to claim 8, characterized in that: The bottom of the purification member (23) is flush with the top of the leaching plate (19), and the bottom of the third purification box (22) is lower than the bottom of the purification member (23).

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