Device and method for decolorizing, separating and recycling printing and dyeing wastewater

Abstract

The invention relates to the technical field of sewage treatment, in particular to printing and dyeing sewage decolorizing, separating and recycling equipment and method.The printing and dyeing sewage decolorizing, separating and recycling equipment comprises a premixing tank and an agent tank, a stirring assembly and an agent adding assembly are arranged in the premixing tank, the agent adding assembly comprises a press-in piece and a turbulent flow piece, and a driving piece is arranged on the stirring assembly; the driving part drives the press-in part to be used for pressing the medicament into the turbulent flow part to flow out and drives the turbulent flow part to bend at intervals to push sewage to flow; a liquid discharge pipe is formed at the bottom of the premixing tank, a dredging assembly is arranged in the liquid discharge pipe and comprises an air injection part and a dredging part, and the driving part drives the press-in part to supply air to the air injection part and drives the dredging part to dredge the liquid discharge pipe at intervals. The medicament is pressed into the sewage at intervals through the press-in piece, the turbulence piece pushes the sewage to flow, and the mixing effect of the sewage and the decolorizing agent can be better in cooperation with stirring of the stirring assembly, so that the decolorizing treatment effect of the decolorizing agent on the sewage is improved.

Description

Technical Field

[0001] The invention relates to the technical field of sewage treatment, and in particular to a decolorizing, separating, circulating and recycling device and method for printing and dyeing sewage. Background Art

[0002] Printing and dyeing wastewater is wastewater containing a large amount of dyes generated during the dyeing process of printing and dyeing factories. At present, the printing and dyeing wastewater generated by the printing and dyeing process of the textile industry has a large amount of water, high chroma, and complex composition. The wastewater contains dyes, slurries, additives, acids, alkalis, fiber impurities and various inorganic salts. In the process of purifying this type of printing and dyeing wastewater, sewage decolorizers are generally added to the sewage. The sewage decolorizer will flocculate impurities in the sewage and remove pigments in the sewage. The flocculated precipitates generally settle to the bottom of the sewage by gravity, and then the precipitates are separated from the clean water and dehydrated into mud by dehydration equipment such as filter presses to complete the treatment of printing and dyeing wastewater.

[0003] The current decolorizing machines directly add the colored printing and dyeing wastewater and the decolorizing agent into the machine body, and then simply stir them through a stirring rod, which causes the decolorizing agent to be unable to be evenly distributed in the wastewater, thereby affecting the mixed decolorizing effect of the decolorizing agent on the wastewater. Summary of the invention

[0004] The purpose of the present invention is to provide a decolorization, separation, circulation and recovery device and method for printing and dyeing wastewater to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions: A decolorization, separation, circulation and recycling device for printing and dyeing wastewater, comprising a premixing tank and a reagent tank, wherein a stirring assembly and a dosing assembly arranged circumferentially along the stirring assembly are arranged in the premixing tank, the reagent tank is used to add reagents into the dosing assembly, and the dosing assembly is used to press the reagents into the wastewater in the premixing tank; The dosing component includes a pressing part and a spoiler. The stirring component is provided with a driving part, which drives the pressing part to press the medicine into the spoiler to flow out. At the same time, the spoiler is driven to bend at intervals to promote the flow of sewage. A drain pipe is formed at the bottom of the premixing tank. A dredging component is arranged in the drain pipe. The dredging component includes an injection component and a dredging component. The driving component drives the pressing component to supply air to the injection component. At the same time, the dredging component is driven to dredge the drain pipe at intervals.

[0006] Furthermore, the stirring assembly includes a rotatable shaft, a liftable sleeve is disposed on the shaft outer shell, a slide groove is disposed on the outer wall of the shaft along its axial direction, a slider sliding in the slide groove is disposed on the inner wall of the sleeve, and stirring rods are evenly distributed outside the sleeve.

[0007] Furthermore, the pressing part includes an air cylinder, and the medicine tank is used to transport medicine to the air cylinder. A first hose for connecting to the spoiler is provided at the bottom of the air cylinder. A liftable piston plate is provided in the air cylinder. The piston plate moves downward to press the medicine into the spoiler. An openable and closable air inlet is arranged on the piston plate. The air inlet is opened to allow the piston plate to move up and reset.

[0008] Furthermore, the driving member includes a boss arranged on the rotating shaft, the outer wall of the boss is provided with a wavy sliding groove connected end to end along its circumference, a lifting ring is provided on the outer sleeve of the boss, a sliding column sliding in the sliding groove is relatively provided on the inner wall of the lifting ring, a piston column extending through the air cylinder is provided on the piston plate, and the piston column is connected to the lifting ring through a connecting plate.

[0009] Furthermore, the spoiler includes a curved spoiler plate, the lower end of which is fixed in the premixing tank through a mounting seat, the upper end of which is fixedly connected to the lower end of a piston column, the lifting of the piston column is used to drive the spoiler plate to push the sewage, a flow channel is provided in the spoiler plate, flow holes are arranged on the side walls of the flow channel, and the first hose is used to connect the flow channel.

[0010] Furthermore, the jet component includes a jet pipe distributed along the circumference of the discharge pipe, the jet pipe is arranged along the axial direction of the discharge pipe, and jet holes are arranged on the outer wall of the jet pipe. The air cylinder is connected to the jet pipe through a second hose, and the piston plate is raised and lowered to press the air in the air cylinder into the jet pipe.

[0011] Furthermore, the lower end of the sleeve can be extended into the drainage pipe; the clearing piece includes a mounting ring arranged at the upper end of the sleeve, an annular groove is arranged on the outer wall of the mounting ring along its circumference, a retaining ring is rotatably arranged in the annular groove, and the retaining ring is connected to the lifting ring through a support plate.

[0012] Furthermore, an air inlet hole is provided on the piston plate; the air inlet member includes a blocking plate provided on the lower side of the piston plate through a torsion spring, and the torsion spring is used to drive the blocking plate to block the air inlet hole.

[0013] Furthermore, a motor for driving the rotating shaft to rotate is provided at the top of the premixing tank.

[0014] The present invention provides a method for decolorizing, separating and recycling printing and dyeing wastewater, which adopts the above-mentioned decolorizing, separating and recycling printing and dyeing wastewater, and specifically comprises the following steps: Step 1: Pass the printing and dyeing wastewater to be treated into a premixing tank; Step 2: Start the motor to enable the stirring assembly to stir the sewage in the premixing tank; at the same time, the reagent in the reagent tank is added to the compressed air cylinder at intervals, and is pressed into the spoiler under the lifting action of the piston plate, and is added to the sewage as the spoiler is deformed, so as to achieve a better mixing effect of the reagent and the sewage; Step 3: After the mixing of the reagent and the sewage is completed, the sewage in the premixing tank is discharged into an external recycling treatment device through a discharge pipe so that the treated sewage can be recycled; Step 4. During step 3, when the drain pipe is blocked, start the motor to drive the lower end of the sleeve to extend into the drain pipe. At the same time, the air in the air cylinder is pressed into the jet pipe under the action of the lifting and lowering of the piston plate, and then the air is ejected from the jet hole, thereby completing the unblocking of the drain pipe to avoid its blockage.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention, through the arrangement of the pressing member and the spoiler, the reagent tank adds the decolorant into the pressing member at intervals, so that under the action of the driving member, the decolorant in the pressing member can be pressed into the spoiler and flow out, so that the decolorant is added to the interior of the sewage. At the same time, because the spoiler is located in the sewage, under the action of the driving member, the sewage in the premixing tank generates turbulence, thereby making the mixing effect of the sewage and the decolorant better, so as to improve its decolorization treatment effect on the sewage.

[0016] 2. The present invention, through the arrangement of the jet component and the clearing component, enables the driving component to supply air to the jet component during drainage, so that the jet component can spray air into the drainage pipe to clear the drainage pipe. At the same time, the driving component can drive the clearing component to extend into the drainage pipe at intervals, thereby clearing the drainage pipe, thereby making the drainage of the drainage pipe smoother. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of a decolorization, separation and recycling equipment for printing and dyeing wastewater in the present invention.

[0018] Figure 2 It is a cross-sectional schematic diagram of a decolorization, separation, circulation and recovery device for printing and dyeing wastewater in the present invention.

[0019] Figure 3 It is a schematic diagram of the structure between the dosing component and the stirring component in the present invention.

[0020] Figure 4 It is a schematic diagram of the structure of the stirring assembly in the present invention.

[0021] Figure 5 It is a schematic diagram of the structure of the driving member in the present invention.

[0022] Figure 6 for Figure 2 Enlarged schematic diagram of part A.

[0023] Figure 7 It is a schematic diagram of the structure of the piston plate and the piston column in the present invention.

[0024] The meaning of the symbols in the figure is: 100, premixing tank; 101, sewage inlet pipe; 102, liquid discharge pipe; 103, support leg; 110, medicine tank; 111, conduit; 112, metering pump; 120, motor; 210, rotating shaft; 220, sleeve; 221, stirring rod; 230, air cylinder; 240, first hose; 250, piston plate; 251, piston column; 260, spoiler; 261, mounting seat; 262, flow channel; 310, convex column; 320, lifting ring; 321, connecting plate; 330, mounting frame; 401, sliding groove; 410, mounting ring; 411, annular groove; 501, sliding column; 502, snap ring; 503, support plate; 610, jet pipe; 611, jet hole; 710. Blocking plate. DETAILED DESCRIPTION

[0025] In order to further understand the content of the present invention, the present invention is described in detail in conjunction with the accompanying drawings and embodiments. It should be understood that the embodiments are only for explaining the present invention and are not intended to limit it.

[0026] The following is combined with Figure 1-Figure 7 This embodiment is described in further detail.

[0027] like Figure 1-Figure 2 As shown, a printing and dyeing wastewater decolorization separation and recycling equipment in this embodiment includes a premixing tank 100 and a reagent tank 110. The premixing tank 100 is provided with a stirring component and a dosing component arranged along the circumference of the stirring component. The reagent tank 110 is used to add a reagent to the dosing component, and the dosing component is used to press the reagent into the wastewater in the premixing tank 100. The dosing component includes a pressing part and a spoiler. The stirring component is provided with a driving part, which drives the pressing part to press the medicine into the spoiler to flow out. At the same time, the spoiler is driven to bend at intervals to promote the flow of sewage. A drain pipe 102 is formed at the bottom of the premixing tank 100. A dredging component is provided in the drain pipe 102. The dredging component includes an injection component and a dredging component. The driving component drives the pressing component to supply air to the injection component. At the same time, the driving component drives the dredging component to dredge the drain pipe 102 at intervals.

[0028] In actual use of this embodiment, a sewage inlet pipe 101 is provided on the outer wall of the premixing tank 100, so that in actual use, printing and dyeing sewage can be added into the premixing tank 100 through the sewage inlet pipe 101; wherein, the reagent tank 110 is used to store the decolorant, and the decolorant can be added into the premixing tank 100 by using the reagent adding assembly to mix it with the printing and dyeing sewage; Specifically, four reagent tanks 110 are arranged on the top along the circumference of the premixing tank 100, and four dosing assemblies are arranged, which are distributed along the circumference of the premixing tank 100, so that the decolorizing agent can be preferably added into the premixing tank 100; In this embodiment, the drain pipe 102 is used to connect to an external recycling and processing equipment, wherein a switch valve is provided on the drain pipe 102, so that after the printing and dyeing wastewater is mixed with the decolorant in the premixing tank 100, the switch valve is opened to allow the printing and dyeing wastewater to flow into the recycling and processing equipment. Specifically, the recycling and processing equipment can precipitate the printing and dyeing wastewater and separate the precipitate so as to recycle the treated wastewater.

[0029] Specifically, in order to install the discharge pipe 102 at the bottom of the premixing tank 100, a support leg 103 for supporting the discharge pipe 102 is provided at the bottom of the premixing tank 100; In this embodiment, the stirring assembly can stir the sewage in the premixing tank 100, so that the decolorizing agent added to the premixing tank 100 can be mixed with the sewage; Through the structure of this embodiment, in actual use, the reagent tank 110 adds the decolorant to the pressing member at intervals, so that under the action of the driving member, the decolorant in the pressing member can be pressed into the spoiler and flow out, so that the decolorant is added to the sewage. At the same time, because the spoiler is located in the sewage, the sewage in the premixing tank 100 generates turbulence under the action of the driving member, thereby achieving a better mixing effect of the sewage and the decolorant. In this embodiment, since the decolorizing agent is added to the sewage, as the stirring component is stirred, the impurities and pigments in the sewage will produce floccules under the action of the decolorizing agent. In order to prevent the floccules from clogging the drain pipe 102 when the drain pipe 102 is discharged, in this embodiment, the drain pipe 102 is dredged by the dredging component to ensure the drainage of the drain pipe 102; Specifically, through the arrangement of the jet component and the clearing component, when discharging liquid, the driving component is driven to supply air to the jet component, so that the jet component can spray liquid into the drain pipe 102 to clear the drain pipe 102. At the same time, the driving component can drive the clearing component to extend into the drain pipe 102 at intervals, thereby clearing the drain pipe 102, thereby making the discharge of liquid from the drain pipe 102 smoother.

[0030] Combination Figure 2 As shown, in this embodiment, the stirring assembly includes a rotatable shaft 210, a liftable sleeve 220 is provided on the outer outer wall of the shaft 210, a slide groove is provided along its axial direction, a slider sliding in the slide groove is provided on the inner wall of the sleeve 220, and stirring rods 221 are evenly distributed outside the sleeve 220.

[0031] In this embodiment, the rotating shaft 210 is vertically arranged in the premixing tank 100, wherein a keyway is formed between the rotating shaft 210 and the sleeve 220 through the cooperation of the slider and the slide groove, and the sleeve 220 can be raised and lowered along the rotating shaft 210, thereby, the rotation of the rotating shaft 210 can drive the sleeve 220 to rotate, and then drive the stirring rod 221 to stir the sewage; Specifically, a motor 120 for driving the rotating shaft 210 to rotate is fixedly installed on the top of the premixing tank 100. The rotating shaft 210 is driven to rotate by the motor 120, so that the stirring assembly stirs and mixes the sewage.

[0032] Combination Figure 2 and Figure 3 As shown, in this embodiment, the pressing part includes a gas cylinder 230, and the medicine tank 110 is used to transport medicine to the gas cylinder 230. The bottom of the gas cylinder 230 is provided with a first hose 240 for connecting to the spoiler. A liftable piston plate 250 is provided in the gas cylinder 230. The piston plate 250 moves downward to press the medicine into the spoiler. An openable and closable air inlet is arranged on the piston plate 250. The air inlet is opened to allow the piston plate 250 to move upward and reset.

[0033] In actual use of this embodiment, the upper end of the compressed air cylinder 230 is opened, and the upper end opening of the compressed air cylinder 230 extends outward to form a mounting ring portion, and the mounting ring portion is fixedly mounted on the top wall of the premixing tank 100 by screw tops; Among them, the top wall of the premix tank 100 is provided with a vent hole corresponding to the compressed air cylinder 230, so that the compressed air cylinder 230 is connected to the outside atmospheric pressure; specifically, the medicine tank 110 is connected to the corresponding compressed air cylinder 230 through a conduit 111, and a metering pump 112 is provided on the conduit 111. The metering pump 112 can be used to pump the decolorizing agent in the medicine tank 110 into the compressed air cylinder 230 at intervals and quantitatively. Through the structure in this embodiment, when the piston plate 250 is lowered in the compressed air cylinder 230, the decolorizing agent in the medicine tank 110 can be pumped into the compressed air cylinder 230 at intervals and quantitatively. The piston plate 250 is lowered, so that the decolorant added to the compressed air cylinder 230 is pressed into the spoiler by the piston plate 250 through the first hose 240 and flows into the sewage; when the piston plate 250 can move up and reset in the compressed air cylinder 230, the air inlet piece is opened, so that the metering pump 112 can again pump the decolorant in the medicine tank 110 into the compressed air cylinder 230 in a quantitative manner, so that the piston plate 250 is raised and lowered again, and the decolorant is added to the sewage, thereby realizing the dosing component to add the decolorant to the sewage at intervals.

[0034] Combination Figure 4 and Figure 5As shown, in this embodiment, the driving member includes a boss 310 arranged on the rotating shaft 210, and a wavy sliding groove 401 is arranged on the outer wall of the boss 310 along its circumference, and a lifting ring 320 is provided on the outer sleeve of the boss 310, and a sliding column 501 sliding in the sliding groove 401 is relatively provided on the inner wall of the lifting ring 320, and a piston column 251 extending through the air cylinder 230 is provided on the piston plate 250, and the piston column 251 is connected to the lifting ring 320 through a connecting plate 321.

[0035] In actual use of this embodiment, the connecting plate 321 connects the piston column 251 and the lifting ring 320, so that the lifting ring 320 is restricted, wherein the sliding column 501 and the sliding groove 401 are matched to each other, so that the rotating shaft 210 drives the protruding column 310 to rotate, drives the side wall of the sliding groove 401 to squeeze the sliding column 501, and makes the sliding column 501 slide along the sliding groove 401, thereby driving the lifting ring 320 to rise and fall, and then can drive the piston column 251 to rise and fall, so as to realize the lifting and falling of the piston plate 250 in the compressed air cylinder 230, that is, the rotation of the rotating shaft 210 can realize the reciprocating lifting and falling of the piston plate 250 in the compressed air cylinder 230; Specifically, combined Figure 7 As shown, in this embodiment, an air inlet hole is provided on the piston plate 250; the air inlet member includes a blocking plate 710 provided on the lower side of the piston plate 250 through a torsion spring, and the torsion spring is used to drive the blocking plate 710 to block the air inlet hole.

[0036] In this embodiment, a hinge seat is provided on the lower side of the piston plate 250, and the plugging plate 710 is rotatably installed on the hinge seat by a torsion spring. The torsion spring provides a torsion force that can better overcome the deadweight of the plugging plate 710, so that the plugging plate 710 fits the lower side of the piston plate 250 to block the air inlet. At this time, when the piston plate 250 moves downward, the plugging plate 710 can fit closely to the air inlet under the action of air pressure and inertia, so that the air inlet is sealed, that is, the decolorant in the air cylinder 230 can be pressed into the spoiler through the first hose 240; The plug plate 250 moves upward, so that the plug plate 710 overcomes its own weight under the action of inertia, and can rotate the plug plate 710 away from the air inlet, so that the air inlet is opened, so that the piston plate 250 can be reset, and the sewage will not flow into the compressed air cylinder 230 through the first hose 240; it should be pointed out that in the process of the piston plate 250 moving upward in this embodiment, the metering pump 112 is used to pump the decolorizing agent in the medicine tank 110 into the compressed air cylinder 230, thereby making the piston plate 250 rise and fall to achieve the addition of the medicine into the sewage.

[0037] Combination Figure 2 and Figure 3As shown, in this embodiment, the spoiler includes a curved spoiler 260, the lower end of the spoiler 260 is fixed in the premixing tank 100 through a mounting seat 261, the upper end of the spoiler 260 is fixedly connected to the lower end of the piston column 251, and the piston column 251 is raised and lowered to drive the spoiler 260 to push the sewage, a flow channel 262 is provided in the spoiler 260, and flow holes are arranged on the side walls of the flow channel 262, and the first hose 240 is used to connect the flow channel 262.

[0038] In this embodiment, the mounting seat 261 is fixedly mounted on the inner wall of the premixing tank 100 to realize the installation of the spoiler 260; specifically, the spoiler 260 is C-shaped and made of elastic material. Since the upper end of the spoiler 260 is fixedly connected to the lower end of the corresponding piston column 251, the lifting and lowering of the piston column 251 can pull the spoiler 260 to bend and deform, thereby promoting the flow of sewage, and cooperating with the stirring effect of the stirring component, the mixing effect between the sewage and the decolorizing agent in the premixing tank 100 can be better; Specifically, the first hose 240 is used to connect the flow channel 262, so that the decolorant in the air cylinder 230 flows into the flow channel 262 through the first hose 240, and the decolorant can flow out through the flow hole, so that the decolorant is added to the sewage during the deformation of the spoiler 260 to improve its mixing effect.

[0039] In actual use, in order to make the piston column 251 rise and fall more smoothly, in this embodiment, a mounting frame 330 is provided in the premixing tank 100, and the piston column 251 is slidably mounted on the mounting frame 330, so that the piston column 251 is restricted and the rise and fall is more stable.

[0040] Combination Figure 6 As shown, in this embodiment, the jet component includes a jet pipe 610 distributed along the circumference of the discharge pipe 102, the jet pipe 610 is arranged along the axial direction of the discharge pipe 102, and jet holes 611 are arranged on the outer wall of the jet pipe 610. The air cylinder 230 is connected to the jet pipe 610 through a second hose, and the piston plate 250 is raised and lowered to press the air in the air cylinder 230 into the jet pipe 610.

[0041] In actual use of this embodiment, solenoid valves are provided on both the first hose 240 and the second hose, and the switching of adding medicine to the medicine tank 110 is performed by opening and closing the solenoid valves. That is, when adding and mixing medicine, the first solenoid valve on the first hose 240 is opened, and the second solenoid valve on the second hose is closed, so that the medicine can be added to the compressed air cylinder 230 for the addition operation. When the waste liquid is discharged, the solenoid valve on the first hose 240 is closed, and the solenoid valve on the second hose is opened. At this time, the medicine tank 110 will not add deionized water to the compressed air cylinder 230. Color agent, at this time, the rotation of the shaft 210 can drive the piston plate 250 to rise and fall. When the piston plate 250 descends in the air cylinder 230, the air in the air cylinder 230 can be pressed into the jet pipe 610, and then the air is ejected from the jet hole 611 to clear the discharge pipe 102. When the piston plate 250 rises in the air cylinder 230, the air inlet piece opens to reset the piston plate 250. As a result, the shaft 210 drives the piston plate 250 to rise and fall back and forth, realizing the intermittent jetting of the jet pipe 610 to clear the discharge pipe 102.

[0042] In this embodiment, the lower end of the sleeve 220 can be extended into the drain pipe 102; the clearing piece includes a mounting ring 410 arranged at the upper end of the sleeve 220, and an annular groove 411 is arranged on the outer wall of the mounting ring 410 along its circumference, and a retaining ring 502 is rotatably arranged in the annular groove 411, and the retaining ring 502 is connected to the lifting ring 320 through a support plate 503.

[0043] In this embodiment, the mounting ring 410 is fixedly connected to the upper end of the sleeve 220, and the sleeve 220 is rotatably connected to the lifting ring 320 by utilizing the coordinated arrangement of the annular groove 411 and the retaining ring 502, so that the lifting and lowering of the lifting ring 320 can drive the mounting ring 410 to move up and down, thereby driving the sleeve 220 to move up and down, so that the lower end thereof extends into the drain pipe 102 at intervals, thereby better clearing the drain pipe 102.

[0044] The present invention also provides a method for decolorizing, separating and recycling printing and dyeing wastewater, which adopts the above-mentioned decolorizing, separating and recycling printing and dyeing wastewater, and specifically comprises the following steps: Step 1: Add the printing and dyeing wastewater to be treated into the premixing tank 100 through the sewage inlet pipe 101 until the liquid level of the printing and dyeing wastewater is located on the uppermost stirring rod 221; Step 2: Start the motor 120 to drive the rotating shaft 210 to rotate, drive the stirring rod 221 to stir the sewage in the premixing tank 100, and at the same time, the first solenoid valve on the first hose 240 is opened, and the second solenoid valve on the second hose is closed, and the metering pump 112 pumps the medicine in the medicine tank 110 into the compressed air cylinder 230 at intervals and in a quantitative manner, so that the piston plate 250 reciprocates and rises and falls in the compressed air cylinder 230, and the medicine in the compressed air cylinder 230 is added to the flow channel 262 in the spoiler 260 through the first hose 240, and flows out from the flow hole as the spoiler 260 bends and deforms, so as to realize the addition of the medicine into the sewage and improve the mixing effect of the sewage and the medicine; Step 3: After the mixing of the reagent and the sewage is completed, the switch valve on the drain pipe 102 is opened to discharge the sewage in the premixing tank 100 into an external recycling treatment device through the drain pipe 102 so that the treated sewage can be recycled; Step 4. During step 3, when the drain pipe 102 is blocked, the motor 120 is started to drive the shaft 210 to rotate. At the same time, the first solenoid valve on the first hose 240 is closed, and the second solenoid valve on the second hose is opened. At this time, the shaft 210 rotates to drive the lower end of the sleeve 220 to extend into the drain pipe 102. At the same time, the air in the air cylinder 230 is pressed into the jet pipe 610 under the action of the lifting and lowering of the piston plate 250, and then the air is ejected from the jet hole 611 to clear the drain pipe 102. In this way, the drain pipe 102 is cleared and its drainage effect is guaranteed.

[0045] In conclusion, the above is only a preferred embodiment of the present invention, and all equivalent changes and modifications made according to the scope of the patent application of the present invention should fall within the scope of the patent of the present invention.

Claims

1. A decolorization, separation, circulation and recycling device for printing and dyeing wastewater, comprising a premixing tank (100) and a reagent tank (110), characterized in that: A stirring assembly and a dosing assembly arranged circumferentially along the stirring assembly are provided in the premixing tank (100); the medicine tank (110) is used to add medicine into the dosing assembly, and the dosing assembly is used to press the medicine into the sewage in the premixing tank (100); The dosing component includes a pressing part and a spoiler. The stirring component is provided with a driving part, which drives the pressing part to press the medicine into the spoiler to flow out. At the same time, the spoiler is driven to bend at intervals to promote the flow of sewage. A liquid discharge pipe (102) is formed at the bottom of the premixing tank (100), and a dredging component is arranged in the liquid discharge pipe (102). The dredging component comprises an air jet component and a dredging component. The driving component drives the pressing component to supply air to the air jet component, and at the same time, drives the dredging component to dredge the liquid discharge pipe (102) at intervals.

2. The decolorization, separation and recycling equipment for printing and dyeing wastewater according to claim 1 is characterized by: The stirring assembly comprises a rotatable rotating shaft (210), the rotating shaft (210) being provided with a sleeve (220) that can be raised and lowered, the outer wall of the rotating shaft (210) being provided with a slide groove along its axial direction, the inner wall of the sleeve (220) being provided with a slider that slides in the slide groove, and stirring rods (221) being evenly distributed outside the sleeve (220).

3. The decolorization, separation and recycling equipment for printing and dyeing wastewater according to claim 2 is characterized by: The pressing member comprises an air cylinder (230), the medicine tank (110) is used to convey medicine to the air cylinder (230), a first hose (240) is provided at the bottom of the air cylinder (230) for connecting to the spoiler, a piston plate (250) which can be raised and lowered is provided in the air cylinder (230), the piston plate (250) is moved downward to press the medicine into the spoiler, an air inlet which can be opened and closed is arranged on the piston plate (250), the air inlet is opened to allow the piston plate (250) to move upward and reset.

4. The decolorization, separation, recycling and recovery equipment for printing and dyeing wastewater according to claim 3 is characterized by: The driving member comprises a boss (310) arranged on the rotating shaft (210), a wavy sliding groove (401) arranged on the outer wall of the boss (310) along its circumference, a lifting ring (320) is provided on the outer sleeve of the boss (310), a sliding column (501) sliding in the sliding groove (401) is provided on the inner wall of the lifting ring (320), and a piston column (251) extending through the air cylinder (230) is provided on the piston plate (250), and the piston column (251) is connected to the lifting ring (320) through a connecting plate (321).

5. The decolorization, separation, recycling and recovery equipment for printing and dyeing wastewater according to claim 4, characterized in that: The spoiler comprises a curved spoiler (260), the lower end of the spoiler (260) being fixed in the premixing tank (100) via a mounting seat (261), the upper end of the spoiler (260) being fixedly connected to the lower end of a piston column (251), the piston column (251) being raised and lowered to drive the spoiler (260) to push the sewage, a flow channel (262) being provided in the spoiler (260), flow holes being arranged on the side wall of the flow channel (262), and a first hose (240) being used to connect the flow channel (262).

6. The decolorization, separation and recycling equipment for printing and dyeing wastewater according to claim 3 is characterized by: The jet component comprises jet pipes (610) distributed along the circumference of the liquid discharge pipe (102), the jet pipes (610) being arranged along the axial direction of the liquid discharge pipe (102), jet holes (611) being arranged on the outer wall of the jet pipe (610), the air cylinder (230) being connected to the jet pipe (610) via a second hose, and the piston plate (250) being raised and lowered to press the air in the air cylinder (230) into the jet pipe (610).

7. The decolorization, separation, recycling and recovery equipment for printing and dyeing wastewater according to claim 4, characterized in that: The lower end of the sleeve (220) can be extended into the drain pipe (102) for installation; the dredging member comprises a mounting ring (410) arranged at the upper end of the sleeve (220); an annular groove (411) is provided on the outer wall of the mounting ring (410) along its circumference; a snap ring (502) is rotatably provided in the annular groove (411); the snap ring (502) is connected to the lifting ring (320) via a support plate (503).

8. The decolorization, separation, recycling and recovery equipment for printing and dyeing wastewater according to claim 3 is characterized by: An air intake hole is provided on the piston plate (250); the air intake member comprises a blocking plate (710) provided on the lower side of the piston plate (250) via a torsion spring, and the torsion spring is used to drive the blocking plate (710) to block the air intake hole.

9. The decolorization, separation, recycling and recovery equipment for printing and dyeing wastewater according to claim 2, characterized in that: A motor (120) for driving the rotating shaft (210) to rotate is provided at the top of the premixing tank (100).

10. A method for decolorizing, separating and recycling printing and dyeing wastewater, characterized in that: The decolorization, separation, circulation and recycling equipment for printing and dyeing wastewater according to any one of claims 1 to 9 is used, which specifically comprises the following steps: Step 1: Pass the printing and dyeing wastewater to be treated into a premixing tank (100); Step 2: starting the motor (120) to enable the stirring assembly to stir the sewage in the premixing tank (100); at the same time, the medicine in the medicine tank (110) is added to the compressed air cylinder (230) at intervals, and is pressed into the spoiler (260) under the lifting action of the piston plate (250), and is added to the sewage as the spoiler (260) is deformed, so as to achieve a better mixing effect of the medicine and the sewage; Step 3: After the mixing of the reagent and the sewage is completed, the sewage in the premixing tank (100) is discharged into an external recycling treatment device through a discharge pipe (102) so that the treated sewage can be recycled; Step 4. During the process of performing step 3, when the drain pipe (102) is blocked, the motor (120) is started to drive the lower end of the sleeve (220) to extend into the drain pipe (102). At the same time, the air in the air cylinder (230) is pressed into the jet pipe (610) under the action of the piston plate (250) rising and falling, and the air is then ejected from the jet hole (611), thereby completing the unblocking of the drain pipe (102) to avoid its blockage.

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