A pretreatment device and treatment method for recycling printing and dyeing chemical wastewater

Abstract

The present invention discloses a pretreatment method for recycling printing and dyeing chemical wastewater, which is applied to a pretreatment device for recycling printing and dyeing chemical wastewater, the device comprising a treatment device: a heat dissipation device is arranged on the left side of the treatment device, the heat dissipation device comprises a box body, and a water pipe is arranged through the top of the box body. The present invention can absorb and utilize the heat of the printing and dyeing chemical wastewater entering the inner cavity of the treatment device through the heat dissipation device, the printing and dyeing chemical wastewater entering the inner cavity of the treatment device is dispersed by the dispersion component and then filtered by the box filter screen, thereby avoiding blockage, and the precipitated flocculants fall on the top of the sedimentation plate and adhere to the tetrahedral pyramid block, after the wastewater treated in the treatment device is discharged, the cover plate 2 is switched to the top of the treatment device by rotating the driving component, and the cooperation of the lifting component, the cover plate 2 and the detachable connecting component can lift the sedimentation plate and the tetrahedral pyramid block out of the top of the treatment device, which is convenient for cleaning.

Description

Technical Field

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

[0002] Printing and dyeing wastewater is the wastewater discharged from printing and dyeing factories that process cotton, linen, chemical fibers and their blended products, silk, wool dyeing and finishing, and silk factories. The amount and quality of printing and dyeing wastewater vary depending on the fiber type and processing technology. Printing and dyeing wastewater has the characteristics of large water volume, high content of organic pollutants, high alkalinity, and large changes in water quality. It is one of the difficult industrial wastewaters to treat. The wastewater contains dyes, pulps, auxiliaries, oils, acids and alkalis, fiber impurities, sand substances, and inorganic salts.

[0003] When printing and dyeing chemical wastewater is discharged, it contains a large amount of heat and a large amount of fabric impurities inside. It is directly transported to the treatment device. The fabric impurities can easily block the normal operation of the entire treatment device. Therefore, we designed a pretreatment device and treatment method for the reuse of printing and dyeing chemical wastewater. The heat of printing and dyeing chemical wastewater is utilized to achieve energy saving, and the filtration adopts a decentralized structure to avoid clogging of the filter screen by fabric impurities. The impurities after flocculation and precipitation can be automatically lifted out of the treatment device, which is convenient for cleaning the precipitated impurities and improving the use efficiency of the treatment device. Summary of the invention

[0004] The purpose of the present invention is to provide a pretreatment device and treatment method for the reuse of printing and dyeing chemical wastewater, which has the advantages of utilizing the heat of printing and dyeing chemical wastewater to achieve energy saving, and adopting a decentralized structure for filtration to avoid clogging of the filter screen by fabric impurities, and the impurities after flocculation and precipitation can be automatically lifted out of the treatment device, which is convenient for cleaning the precipitated impurities and improving the use efficiency of the treatment device to solve the above-mentioned background technical problems.

[0005] The technical solution of the present invention to solve the above technical problems is as follows: a pretreatment method for recycling printing and dyeing chemical wastewater, which is applied to a pretreatment device for recycling printing and dyeing chemical wastewater, the device comprises a treatment device: a heat dissipation device is arranged on the left side of the treatment device, the heat dissipation device comprises a box body, a water pipe is arranged through the top of the box body, the bottom of the water pipe extends to the inner cavity of the box body and is connected with a spiral cooling pipe, the end of the spiral cooling pipe away from the water pipe is connected with a liquid inlet pipe, one end of the liquid inlet pipe penetrates into the inner cavity of the treatment device, a box-type filter is detachably installed on the left side of the inner cavity of the treatment device, the box-type filter is located at the end of the liquid inlet pipe, a sedimentation plate is placed at the bottom of the inner cavity of the treatment device, a plurality of quadrangular pyramid blocks are fixedly connected to the top rectangular array of the sedimentation plate, a fixed seat is fixedly connected to the right side of the treatment device, a rotating shaft rod is rotatably connected to the top of the fixed seat, and a lifting component is arranged on the top of the rotating shaft rod, The lifting mechanism is a pair of fixedly mounted on two opposite sides of the lifting mechanism, and the fixing portion is a pair of fixedly mounted on two opposite sides of the lifting mechanism, and the fixing portion is a pair of fixedly mounted on two opposite sides of the lifting mechanism.

[0006] The steps of the pretreatment method for recycling printing and dyeing chemical wastewater are as follows:

[0007] 1. The water supply pipe is connected to the water delivery pipe, and the overflow pipe is connected to the printing and dyeing production device. The printing and dyeing wastewater enters the spiral cooling pipe through the water delivery pipe and is cooled by the cold water in the inner cavity of the box. The spiral cooling pipe increases the stroke of the wastewater, which is convenient for rapid cooling. After the cold water in the inner cavity of the box is heated, it is transported to the printing and dyeing production through the overflow pipe, reducing the resources consumed by heating cold water and achieving energy conservation and emission reduction. After cooling, the wastewater in the spiral cooling pipe enters the inner cavity of the treatment device through the liquid inlet pipe. The water flow hits the conical block and is dispersed. The dispersed water flow hits the fan to drive the fan to rotate, and the water flow is dispersed to the inner cavity of the box filter, so that large particles of fabric impurities in the printing and dyeing wastewater are filtered by the box filter. The dispersed water flow reduces the impact force on the box filter, and also reduces the blockage of the filter holes of the box filter, thereby improving the filtration efficiency.

[0008] 2. Add flocculant to the treatment device in advance, and the wastewater filtered by the box filter enters and mixes with the flocculant. The motor drives the threaded column to rotate. Due to the thread, the threaded sleeve drives the cover plate 1 and the stirring structure to descend until the cover plate 1 covers the top of the treatment device, so that the stirring rod of the stirring structure enters the inner cavity of the treatment device, and the stirring structure is started to properly stir the wastewater and flocculant in the inner cavity of the treatment device to accelerate the mixing of the flocculant and the wastewater. After stirring for 20 minutes, the stirring is stopped, and then the motor drives the threaded column to reverse, so that the threaded sleeve drives the cover plate 1 and the stirring structure to separate from the inner cavity of the treatment device. After the mixed liquid in the treatment device is precipitated for two hours, the precipitated impurities will fall to the top of the precipitation plate. The tetrahedral pyramid block increases the attachment effect of the impurities to prevent the impurities from moving freely in the treatment device. Open the drain pipe at the bottom of the treatment device to discharge the liquid in the treatment device to the next treatment process until the precipitation plate is exposed, and then lift the box filter upward to separate the plug-in strip on the box filter from the inner cavity of the slot strip, remove the box filter and clean it;

[0009] 3. Then the cylinder drives the rack to move, so that the rack drives the gear and the rotating shaft rod to rotate 180 degrees, and the rotating shaft rod drives the lifting assembly and the cover plate 2 to rotate, so that the cover plate 2 is located above the processing device, and then the motor drives the threaded column to rotate, so that the threaded sleeve drives the cover plate 2 to move downward, and the sleeve on the cover plate 2 is sleeved on the surface of the frustum block 1. When the wedge-shaped block in the inner cavity of the sleeve contacts the frustum block 1, the two wedge-shaped blocks move back to each other and squeeze the spring until the wedge-shaped block moves to the bottom of the frustum block 1. The elastic force of the spring causes the two wedge-shaped blocks to move toward each other to the bottom of the frustum block 1. Then the motor reverses to drive the threaded sleeve to move upward, and the threaded sleeve drives the precipitation plate to move out of the inner cavity of the processing device through the cover plate 2 and the detachable connecting assembly, so that the user can clean the impurities precipitated on the precipitation plate and the four-sided frustum block. The cleaned precipitation plate falls back to the inner cavity of the processing device through the lifting assembly, and the precipitation plate and the inner cavity of the processing device are When the bottom contacts, the cover plate 2 continues to move downward, and the wedge-shaped block contacts the frustum block 2, so that the wedge-shaped block moves toward the inner cavity of the fixed shell and squeezes the spring until the wedge-shaped block moves to the surface of the frustum block 2. Then the restoring force of the spring makes the wedge-shaped block rest on the side of the frustum block 2, and then the motor drives the threaded column to rotate, so that the threaded sleeve drives the cover plate 2 to rise. During this period, the cover plate 2 drives the long rod 1 and the sleeve shell to rise, and the wedge-shaped block in the inner cavity of the sleeve shell drives the frustum block 2 to slide upward on the surface of the fixed rod until the frustum block 2 contacts the frustum block 1. The two wedge blocks move back to back due to the side of the frustum block 2, so that the wedge blocks are successively separated from the surfaces of the frustum block 2 and the frustum block 1, so that the sedimentation plate is installed in the inner cavity of the processing device, and the cover plate 2 drives the long rod 1 and the sleeve shell to separate from the inner cavity of the processing device, and then the rotating drive assembly drives the rotating shaft rod and the lifting assembly to rotate, and the cover plate 1 is switched to the top of the processing device.

[0010] Preferably, the bottom of the left side of the box body is connected to a water supply pipe, and the top of the left side of the box body is connected to an overflow pipe.

[0011] Preferably, a stirring structure is installed on the cover plate 1, and the distance between the stirring rod of the stirring structure and the box-type filter is ten centimeters.

[0012] Preferably, the lifting assembly includes a frame fixedly connected to the top of the rotating shaft rod, the inner cavity of the frame is rotatably connected to a threaded column, the surface of the threaded column is threadedly connected to a threaded sleeve that slides in the inner cavity of the frame, the cover plate 1 and the cover plate 2 are respectively installed on one side of the threaded sleeve, and a motor is fixedly installed on the top of the frame, and the output shaft of the motor is fixedly connected to the threaded column.

[0013] Preferably, the inner cavity of the fixed shell is provided with a spring, and two ends of the spring are respectively welded to the inner wall of the fixed shell and the wedge-shaped block.

[0014] Preferably, a second frustum block is slidably connected to the surface of the fixing rod, and the second frustum block has the same size as the first frustum block.

[0015] Preferably, the rotation drive assembly includes a gear fixedly connected to the surface of the rotating shaft rod, a cylinder is fixedly installed on the top of the fixed seat, and a rack meshing with the gear is fixedly installed on the output end of the cylinder.

[0016] Preferably, the top of the fixing seat is fixedly connected with a guide rail, the bottom of the rack is fixedly connected with two sliding blocks, and the sliding blocks are slidably connected to the inner cavity of the guide rail.

[0017] Preferably, two slot bars are fixedly connected to the left side of the inner cavity of the processing device, and two plug-in bars plugged into the inner cavity of the slot bars are fixedly connected to the box-type filter.

[0018] Preferably, the pointed end of the conical block faces the center of the liquid inlet pipe.

[0019] 1. The beneficial effects of the present invention are as follows: the present invention can absorb and utilize the heat of the printing and dyeing chemical wastewater entering the inner cavity of the treatment device through the heat dissipation device. The printing and dyeing chemical wastewater entering the inner cavity of the treatment device is dispersed by the dispersion component and then filtered by the box filter. The fabric impurities will be dispersed to every corner of the box filter to avoid clogging. The lifting component drives the cover plate 1 to descend, and the mixing effect of the printing and dyeing chemical wastewater and the flocculant is improved by the stirring structure. The precipitated floccules fall on the top of the sedimentation plate and adhere to the tetrahedral pyramid block. After the wastewater treated in the treatment device is discharged, the cover plate 2 is switched to the top of the treatment device by the rotating drive component. The lifting component, the cover plate 2 and the detachable connecting component cooperate to lift the sedimentation plate and the tetrahedral pyramid block out of the top of the treatment device for easy cleaning, so that the heat of the printing and dyeing chemical wastewater is utilized to achieve energy saving. The filtration adopts a decentralized structure to avoid clogging of the filter screen by fabric impurities. The impurities after flocculation and precipitation can be automatically lifted out of the treatment device, which is convenient for cleaning the precipitated impurities and improving the use efficiency of the treatment device.

[0020] 2. The present invention uses the guide rail and the slider in coordination, and the rack drives the slider to slide in the inner cavity of the guide rail. The slider and the guide rail provide support and guidance for the rack, thereby improving the stability of the rack movement.

[0021] 3. The present invention uses the block bar and the slot bar in combination. After the block bar on the box filter is inserted into the inner cavity of the slot bar, the box filter will be limited when the cover plate is pressed on the top of the processing device, ensuring that the box filter will not fall due to the impact of the water flow. The plug-in connection between the block bar and the slot bar facilitates the subsequent removal of the box filter. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The above and / or other advantages of the present invention will become clearer and easier to understand through the detailed description made in conjunction with the following drawings, which are only exemplary and do not limit the present invention, wherein:

[0023] Figure 1 A schematic diagram of the structure of an embodiment of the present invention;

[0024] Figure 2 A three-dimensional cross-sectional schematic diagram of a heat dissipation device according to an embodiment of the present invention;

[0025] Figure 3 A three-dimensional schematic diagram of a partial structure of an embodiment of the present invention;

[0026] Figure 4 It is a three-dimensional cross-sectional schematic diagram of a processing device and a box-type filter screen according to an embodiment of the present invention;

[0027] Figure 5 For an embodiment of the present invention Figure 4 Schematic diagram of a partial enlarged view of point A;

[0028] Figure 6 It is a three-dimensional schematic diagram of a lifting assembly and a rotating drive assembly according to an embodiment of the present invention;

[0029] Figure 7 It is a three-dimensional disassembled schematic diagram of a rotation drive assembly according to an embodiment of the present invention;

[0030] Figure 8 It is a three-dimensional cross-sectional schematic diagram of a detachable connecting assembly according to an embodiment of the present invention;

[0031] Fig. 9 It is a three-dimensional schematic diagram of a box-type filter and a dispersion component according to an embodiment of the present invention.

[0032] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0033] 1. Processing device, 2. Heat dissipation device, 21. Box, 22. Water pipe, 23. Spiral cooling pipe, 24. Liquid inlet pipe, 25. Water supply pipe, 26. Overflow pipe, 3. Box filter, 4. Sedimentation plate, 5. Four-sided pyramid block, 6. Fixed seat, 7. Rotating shaft rod, 8. Lifting assembly, 81. Frame, 82. Threaded column, 83. Threaded sleeve, 84. Motor, 9. Cover plate 1, 10. Stirring structure, 11. Cover plate 2, 12. Removable connection assembly, 121. Long rod one, 122, sleeve shell, 123, fixed shell, 124, wedge-shaped block, 125, spring, 126, long rod two, 127, fixed rod, 128, frustum block one, 129, frustum block two, 13, rotation drive assembly, 131, gear, 132, cylinder, 133, rack, 134, guide rail, 135, slider, 14, insert block strip, 15, slot strip, 16, dispersion assembly, 161, connecting rod, 162, conical block, 163, fan. DETAILED DESCRIPTION

[0034] Hereinafter, embodiments of the printing and dyeing chemical wastewater reuse pretreatment device and treatment method of the present invention will be described with reference to the accompanying drawings.

[0035] The embodiments described herein are specific embodiments of the present invention, which are used to illustrate the concept of the present invention, are illustrative and exemplary, and should not be construed as limiting the embodiments of the present invention and the scope of the present invention. In addition to the embodiments described herein, those skilled in the art can also adopt other obvious technical solutions based on the claims and the contents disclosed in the specification of this application, including technical solutions that adopt any obvious replacement and modification of the embodiments described herein.

[0036] The drawings of this specification are schematic diagrams, which assist in explaining the concept of the present invention and schematically show the shapes of various parts and their mutual relationships. Please note that in order to clearly show the structures of various components of the embodiments of the present invention, the drawings are not drawn according to the same scale. The same reference numerals are used to represent the same parts.

[0037] Embodiment 1

[0038] Figure 1-9A printing and dyeing chemical wastewater reuse pretreatment method according to an embodiment of the present invention is shown, which is applied to a printing and dyeing chemical wastewater reuse pretreatment device, the device comprising a treatment device 1: a heat dissipation device 2 is arranged on the left side of the treatment device 1, the heat dissipation device 2 comprises a box body 21, a water delivery pipe 22 is penetrated through the top of the box body 21, the bottom of the water delivery pipe 22 extends to the inner cavity of the box body 21 and is connected with a spiral cooling pipe 23, the end of the spiral cooling pipe 23 away from the water delivery pipe 22 is connected with a liquid inlet pipe 24, one end of the liquid inlet pipe 24 penetrates into the inner cavity of the treatment device 1, the bottom of the left side of the box body 21 is connected with a water supply pipe 25, the top of the left side of the box body 21 is connected with an overflow pipe 26, a box filter 3 is detachably installed on the left side of the inner cavity of the treatment device 1, and the box filter 3 is located at the liquid inlet pipe 24. 24, two slot bars 15 are fixedly connected to the left side of the inner cavity of the processing device 1, and two plug-in bars 14 are fixedly connected to the box-type filter 3 and plugged into the inner cavity of the slot bars 15. Through the coordinated use of the plug-in bars 14 and the slot bars 15, after the plug-in bars 14 on the box-type filter 3 are inserted into the inner cavity of the slot bars 15, when the cover plate 9 is pressed on the top of the processing device 1, the box-type filter 3 will also be limited, ensuring that the box-type filter 3 will not fall due to the impact of the water flow, and the plug-in connection between the plug-in bars 14 and the slot bars 15 facilitates the subsequent removal of the box-type filter 3. A sedimentation plate 4 is placed at the bottom of the inner cavity of the processing device 1, and a plurality of quadrangular pyramid blocks 5 are fixedly connected to the top rectangular array of the sedimentation plate 4. A fixing seat 6 is fixedly connected to the right side of the processing device 1, and the top of the fixing seat 6 is rotated A rotating shaft rod 7 is connected, a lifting assembly 8 is arranged on the top of the rotating shaft rod 7, a cover plate 19 is arranged on the left side of the lifting assembly 8, a stirring structure 10 is installed on the cover plate 19, the spacing between the stirring rod of the stirring structure 10 and the box-type filter screen 3 is ten centimeters, a cover plate 2 11 is arranged on the right side of the lifting assembly 8, a detachable connecting assembly 12 is arranged between the cover plate 2 11 and the sedimentation plate 4, the detachable connecting assembly 12 comprises a long rod 121 fixedly connected to the four corners of the bottom of the cover plate 2 11, a sleeve shell 122 is fixedly connected to the bottom of the long rod 121, a fixed shell 123 is fixedly connected to the bottom of both sides of the sleeve shell 122, a wedge-shaped block 124 is slidably connected to the inner cavity of the fixed shell 123, one side of the wedge-shaped block 124 penetrates into the inner cavity of the sleeve shell 122, and the fixed shell 12 The inner cavity of the filter 3 is provided with a spring 125, and the two ends of the spring 125 are respectively welded to the inner wall of the fixed shell 123 and the wedge-shaped block 124, the four corners of the top of the sedimentation plate 4 are fixedly connected with the long rod 126 aligned with the long rod 121, the top of the long rod 126 is fixedly connected with a fixing rod 127, the top of the fixing rod 127 is fixedly connected with a frustum block 128, the surface of the fixing rod 127 is slidably connected with a frustum block 129, and the frustum block 129 has the same size as the frustum block 128, a rotating drive assembly 13 is arranged between the rotating shaft rod 7 and the fixing seat 6, and a dispersion assembly 16 is installed in the inner cavity of the box-type filter 3, and the dispersion assembly 16 includes two connecting rods 161 welded on the box-type filter 3, and a conical block 162 is welded between the two connecting rods 161.A rotatable fan 163 is installed on the right side of the conical block 162, and the pointed end of the conical block 162 faces the center of the liquid inlet pipe 24;

[0039] The steps of the pretreatment method for recycling printing and dyeing chemical wastewater are as follows:

[0040] 1. The water supply pipe 25 is connected to the water delivery pipe, and the overflow pipe 26 is connected to the printing and dyeing production device. The printing and dyeing wastewater enters the spiral cooling pipe 23 through the water delivery pipe 22, and is cooled by the cold water in the inner cavity of the box body 21. The spiral cooling pipe 23 increases the stroke of the wastewater, which is convenient for rapid cooling. After the cold water in the inner cavity of the box body 21 is heated, it is transported to the printing and dyeing production through the overflow pipe 26, reducing the resources consumed by heating cold water and achieving energy conservation and emission reduction. The wastewater in the spiral cooling pipe 23 is cooled and enters the inner cavity of the treatment device 1 through the liquid inlet pipe 24. The water flow hits the conical block 162 to be dispersed. The dispersed water flow hits the fan 163 to drive the fan 163 to rotate, and disperses the water flow to the inner cavity of the box filter 3, so that large particles of fabric impurities in the printing and dyeing wastewater are filtered by the box filter 3. The dispersed water flow reduces the impact force on the box filter 3, and also reduces the blockage of the filter holes of the box filter 3, thereby improving the filtering efficiency.

[0041] 2. Add flocculant in advance to the treatment device 1, and the wastewater filtered by the box filter 3 enters and mixes with the flocculant. The motor 84 drives the threaded column 82 to rotate. Due to the thread, the threaded sleeve 83 drives the cover plate 9 and the stirring structure 10 to descend until the cover plate 9 covers the top of the treatment device 1, and then the stirring rod of the stirring structure 10 enters the inner cavity of the treatment device 1. The stirring structure 10 is started to properly stir the wastewater and flocculant in the inner cavity of the treatment device 1 to accelerate the mixing of the flocculant and the wastewater. After stirring for twenty minutes, the stirring is stopped, and then the motor 84 drives the threaded column 82 to reverse. , so that the threaded sleeve 83 drives the cover plate 9 and the stirring structure 10 to separate from the inner cavity of the treatment device 1. After the mixed liquid in the treatment device 1 is precipitated for two hours, the precipitated impurities will fall on the top of the precipitation plate 4. The tetrahedral pyramid block 5 increases the attachment effect of the impurities to prevent the impurities from moving freely in the treatment device 1. The drain pipe at the bottom of the treatment device 1 is opened to drain the liquid in the treatment device 1 to the next treatment process until the precipitation plate 4 is exposed. Then, the box-type filter screen 3 is lifted up to separate the plug-in strip 14 on the box-type filter screen 3 from the inner cavity of the slot strip 15. The box-type filter screen 3 is removed and cleaned.

[0042] 3. Then the cylinder 132 drives the rack 133 to move, so that the rack 133 drives the gear 131 and the shaft rod 7 to rotate 180 degrees, and the shaft rod 7 drives the lifting assembly 8 and the cover plate 2 11 to rotate, so that the cover plate 2 11 is located above the processing device 1. Then the motor 84 drives the threaded column 82 to rotate, so that the threaded sleeve 83 drives the cover plate 2 11 to move downward, and the sleeve 122 on the cover plate 2 11 is sleeved on the surface of the frustum block 1 128. When the wedge-shaped block 124 in the inner cavity of the sleeve 122 contacts the frustum block 128, the two wedge-shaped blocks 124 move back to back and squeeze the spring 1 25, until the wedge-shaped block 124 moves to the bottom of the frustum block 128, the elastic force of the spring 125 makes the two wedge-shaped blocks 124 move toward each other to the bottom of the frustum block 128, then the motor 84 reverses to drive the threaded sleeve 83 to move upward, and the threaded sleeve 83 drives the precipitation plate 4 to move out of the inner cavity of the processing device 1 through the cover plate 2 11 and the detachable connecting component 12, so that the user can clean the impurities precipitated on the precipitation plate 4 and the four-sided frustum block 5. The cleaned precipitation plate 4 falls back to the inner cavity of the processing device 1 through the lifting component 8. When the precipitation plate 4 contacts the bottom of the inner cavity of the processing device 1, The cover plate 11 continues to move downward, and the wedge-shaped block 124 contacts the frustum block 129, so that the wedge-shaped block 124 moves toward the inner cavity of the fixed shell 123 and squeezes the spring 125 until the wedge-shaped block 124 moves to the surface of the frustum block 129. Then, the restoring force of the spring 125 makes the wedge-shaped block 124 press against the side of the frustum block 129. Then, the motor 84 drives the threaded column 82 to rotate, so that the threaded sleeve 83 drives the cover plate 11 to rise. During this period, the cover plate 11 drives the long rod 121 and the sleeve 122 to rise, and the wedge-shaped block 124 in the inner cavity of the sleeve 122 drives the frustum block 129 to move upward. The second block 129 slides upward on the surface of the fixed rod 127 until the second cone block 129 contacts the first cone block 128. The two wedge-shaped blocks 124 move away from each other due to the side surfaces of the second cone block 129, so that the wedge-shaped blocks 124 are separated from the surfaces of the second cone block 129 and the first cone block 128 in turn, so that the sedimentation plate 4 is installed in the inner cavity of the processing device 1, and the cover plate 2 11 drives the long rod 121 and the sleeve 122 to separate from the inner cavity of the processing device 1, and then the rotating drive assembly 13 drives the rotating shaft rod 7 and the lifting assembly 8 to rotate, and the cover plate 1 9 is switched to the top of the processing device 1.

[0043] Embodiment 2

[0044] Basically the same as implementation one, further: the lifting assembly 8 includes a frame 81 fixedly connected to the top of the rotating shaft rod 7, the inner cavity of the frame 81 is rotatably connected with a threaded column 82, the surface of the threaded column 82 is threadedly connected with a threaded sleeve 83 sliding in the inner cavity of the frame 81, the cover plate 1 9 and the cover plate 2 11 are respectively installed on one side of the threaded sleeve 83, and the top of the frame 81 is fixedly installed with a motor 84, and the output shaft of the motor 84 is fixedly connected to the threaded column 82.

[0045] Embodiment 3

[0046] Basically the same as implementation one, further: the rotation drive assembly 13 includes a gear 131 fixedly connected to the surface of the rotating shaft rod 7, a cylinder 132 is fixedly installed on the top of the fixed base 6, and a rack 133 meshing with the gear 131 is fixedly installed on the output end of the cylinder 132, and a guide rail 134 is fixedly connected to the top of the fixed base 6, and two sliders 135 are fixedly connected to the bottom of the rack 133. The slider 135 is slidably connected to the inner cavity of the guide rail 134. Through the coordinated use of the guide rail 134 and the slider 135, the rack 133 drives the slider 135 to slide in the inner cavity of the guide rail 134. The slider 135 and the guide rail 134 provide support and guidance for the rack 133, thereby improving the stability of the movement of the rack 133.

[0047] In summary, the pretreatment device and treatment method for recycling printing and dyeing chemical wastewater can absorb and utilize the heat of the printing and dyeing chemical wastewater entering the inner cavity of the treatment device 1 through the heat dissipation device 2. The printing and dyeing chemical wastewater entering the inner cavity of the treatment device 1 is dispersed by the dispersion component 16 and then filtered by the box filter 3. Fabric impurities will be dispersed to every corner of the box filter 3 to avoid clogging. The cover plate 9 is driven down by the lifting component 8, and the mixing effect of the printing and dyeing chemical wastewater and the flocculant is improved by the stirring structure 10. The precipitated flocculants fall on the top of the sedimentation plate 4 and adhere to the four edges. On the frustum block 5, after the wastewater treated in the treatment device 1 is discharged, the cover plate 11 is switched to the top of the treatment device 1 by rotating the driving component 13, and the lifting component 8, the cover plate 11 and the detachable connecting component 12 cooperate to lift the sedimentation plate 4 and the tetrahedral frustum block 5 out of the top of the treatment device 1, which is convenient for cleaning, so that the heat of the printing and dyeing chemical wastewater is utilized to achieve energy saving, and the filtration adopts a decentralized structure to avoid the clogging of the filter screen by fabric impurities, and the impurities after flocculation and precipitation can be automatically lifted out of the treatment device, which is convenient for cleaning the precipitated impurities and improving the use efficiency of the treatment device.

[0048] The technical features disclosed above are not limited to the disclosed combinations with other features. Those skilled in the art may also make other combinations between the technical features according to the purpose of the invention to achieve the purpose of the invention.

Claims

1. A pretreatment method for recycling printing and dyeing chemical wastewater, which is applied to a pretreatment device for recycling printing and dyeing chemical wastewater, characterized in that: The device comprises a processing device (1): a heat dissipation device (2) is arranged on the left side of the processing device (1), the heat dissipation device (2) comprises a box body (21), a water pipe (22) is arranged through the top of the box body (21), the bottom of the water pipe (22) extends to the inner cavity of the box body (21) and is connected to a spiral cooling pipe (23), one end of the spiral cooling pipe (23) away from the water pipe (22) is connected to a liquid inlet pipe (24), one end of the liquid inlet pipe (24) penetrates the inner cavity of the processing device (1), a box-type filter screen (3) is detachably installed on the left side of the inner cavity of the processing device (1), the box-type filter screen (3) is located at the end of the liquid inlet pipe (24), and a sedimentation plate (4) is placed at the bottom of the inner cavity of the processing device (1). ), a plurality of quadrangular pyramid blocks (5) are fixedly connected in a rectangular array on the top of the precipitation plate (4), a fixing seat (6) is fixedly connected on the right side of the processing device (1), a rotating shaft rod (7) is rotatably connected to the top of the fixing seat (6), a lifting assembly (8) is arranged on the top of the rotating shaft rod (7), a cover plate 1 (9) is arranged on the left side of the lifting assembly (8), a cover plate 2 (11) is arranged on the right side of the lifting assembly (8), a detachable connecting assembly (12) is arranged between the cover plate 2 (11) and the precipitation plate (4), the detachable connecting assembly (12) comprises a long rod 1 (121) fixedly connected to the four corners of the bottom of the cover plate 2 (11), and a casing (122) is fixedly connected to the bottom of the long rod 1 (121) The bottoms of both sides of the casing (122) are fixedly connected to fixed shells (123), the inner cavity of the fixed shell (123) is slidably connected to a wedge-shaped block (124), one side of the wedge-shaped block (124) penetrates into the inner cavity of the casing (122), the four corners of the top of the precipitation plate (4) are fixedly connected to long rods (126) aligned with long rods (121), the top of the long rods (126) is fixedly connected to a fixed rod (127), the top of the fixed rod (127) is fixedly connected to a frustum block (128), a rotation drive assembly (13) is provided between the rotating shaft rod (7) and the fixed seat (6), the rotation drive assembly (13) comprises a gear (131) fixedly connected to the surface of the rotating shaft rod (7), A cylinder (132) is fixedly mounted on the top of the fixed seat (6); a rack (133) meshing with the gear (131) is fixedly mounted on the output end of the cylinder (132); a guide rail (134) is fixedly connected to the top of the fixed seat (6); two sliders (135) are fixedly connected to the bottom of the rack (133); the sliders (135) are slidably connected to the inner cavity of the guide rail (134); a dispersion component (16) is mounted in the inner cavity of the box-type filter (3); the dispersion component (16) comprises two connecting rods (161) welded to the box-type filter (3); a conical block (162) is welded between the two connecting rods (161); a rotatable fan (163) is mounted on the right side of the conical block (162); The steps of the pretreatment method for recycling printing and dyeing chemical wastewater are as follows:

1. The water supply pipe (25) is connected to the water delivery pipe, and the overflow pipe (26) is connected to the printing and dyeing production device. The printing and dyeing wastewater enters the spiral cooling pipe (23) through the water delivery pipe (22) and is cooled by the cold water in the inner cavity of the box body (21). The spiral cooling pipe (23) increases the stroke of the wastewater, thereby facilitating rapid cooling. After the cold water in the inner cavity of the box body (21) is heated, it is transported to the printing and dyeing production through the overflow pipe (26), thereby reducing the resources consumed by heating cold water, achieving energy conservation and emission reduction, and the wastewater in the spiral cooling pipe (23) After being cooled, the water flows into the inner cavity of the treatment device (1) through the liquid inlet pipe (24), and the water flows are dispersed by impacting the conical block (162). The dispersed water flows impact the fan (163), driving the fan (163) to rotate, and the water flows are dispersed to the inner cavity of the box-type filter (3), so that large particles of fabric impurities in the printing and dyeing wastewater are filtered by the box-type filter (3). The dispersed water flows reduce the impact force on the box-type filter (3), and also reduce the blockage of the filter holes of the box-type filter (3), thereby improving the filtering efficiency.

2. A flocculant is pre-added to the treatment device (1), and the wastewater filtered by the box filter (3) enters and mixes with the flocculant. The motor (84) drives the threaded column (82) to rotate. Due to the thread, the threaded sleeve (83) drives the cover plate 1 (9) and the stirring structure (10) to descend until the cover plate 1 (9) covers the top of the treatment device (1), and then the stirring rod of the stirring structure (10) enters the inner cavity of the treatment device (1). The stirring structure (10) is started to properly stir the wastewater and flocculant in the inner cavity of the treatment device (1), thereby accelerating the mixing of the flocculant and the wastewater. After stirring for twenty minutes, the stirring is stopped, and then the motor (84) drives the threaded column (82) to reverse. The threaded sleeve (83) drives the cover plate 1 (9) and the stirring structure (10) to separate from the inner cavity of the processing device (1). After the mixed liquid in the processing device (1) is precipitated for two hours, the precipitated impurities will fall to the top of the precipitation plate (4). The tetrahedral pyramid block (5) increases the attachment effect of the impurities, preventing the impurities from moving freely in the processing device (1). The drainage pipe at the bottom of the processing device (1) is opened to drain the liquid in the processing device (1) to the next processing step until the precipitation plate (4) is exposed. Then, the box filter (3) is lifted upwards to separate the plug-in bar (14) on the box filter (3) from the inner cavity of the slot bar (15). The box filter (3) is removed and cleaned.

3. Then the cylinder (132) drives the rack (133) to move, so that the rack (133) drives the gear (131) and the rotating shaft (7) to rotate 180 degrees, and the rotating shaft (7) drives the lifting assembly (8) and the second cover plate (11) to rotate, so that the second cover plate (11) is located above the processing device (1), and then the motor (84) drives the threaded column (82) to rotate, so that the threaded sleeve (83) drives the second cover plate (11) to move downward, and the sleeve (122) on the second cover plate (11) is sleeved on the surface of the first frustum block (128). When the wedge-shaped block (124) in the inner cavity of the sleeve (122) contacts the first frustum block (128), the two wedge-shaped blocks (124) move away from each other and squeeze the spring. (125), until the wedge-shaped block (124) moves to the bottom of the frustum block (128), the elastic force of the spring (125) causes the two wedge-shaped blocks (124) to move toward each other to the bottom of the frustum block (128), and then the motor (84) reverses to drive the threaded sleeve (83) to move upward, and the threaded sleeve (83) drives the sedimentation plate (4) to move out of the inner cavity of the processing device (1) through the cover plate (11) and the detachable connecting assembly (12), so that the user can clean the impurities precipitated on the sedimentation plate (4) and the four-sided frustum block (5). The cleaned sedimentation plate (4) is lowered back into the inner cavity of the processing device (1) through the lifting assembly (8), and when the sedimentation plate (4) contacts the bottom of the inner cavity of the processing device (1), The cover plate 2 (11) continues to move downward, and the wedge-shaped block (124) contacts the frustum block 2 (129), so that the wedge-shaped block (124) moves toward the inner cavity of the fixed shell (123) and squeezes the spring (125) until the wedge-shaped block (124) moves to the surface of the frustum block 2 (129). Then, the restoring force of the spring (125) causes the wedge-shaped block (124) to abut against the side of the frustum block 2 (129). Then, the motor (84) drives the threaded column (82) to rotate, so that the threaded sleeve (83) drives the cover plate 2 (11) to rise. During this period, the cover plate 2 (11) drives the long rod 1 (121) and the sleeve shell (122) to rise, and the wedge-shaped block (124) in the inner cavity of the sleeve shell (122) drives The second cone block (129) slides upward on the surface of the fixed rod (127) until the second cone block (129) contacts the first cone block (128). Then, the two wedge-shaped blocks (124) move in opposite directions due to the side surfaces of the second cone block (129), so that the wedge-shaped blocks (124) are separated from the surfaces of the second cone block (129) and the first cone block (128) in turn, so that the sedimentation plate (4) is installed in the inner cavity of the processing device (1). The second cover plate (11) drives the first long rod (121) and the casing (122) to separate from the inner cavity of the processing device (1). Then, the rotating drive assembly (13) drives the rotating shaft rod (7) and the lifting assembly (8) to rotate, and the cover plate (9) is switched to the upper side of the processing device (1).

2. A pretreatment method for recycling printing and dyeing chemical wastewater according to claim 1, characterized in that: The bottom of the left side of the box body (21) is connected to a water supply pipe (25), and the top of the left side of the box body (21) is connected to an overflow pipe (26).

3. A pretreatment method for recycling printing and dyeing chemical wastewater according to claim 2, characterized in that: A stirring structure (10) is installed on the cover plate 1 (9), and the distance between the stirring rod of the stirring structure (10) and the box-type filter (3) is ten centimeters.

4. A pretreatment method for recycling printing and dyeing chemical wastewater according to claim 3, characterized in that: The lifting assembly (8) comprises a frame (81) fixedly connected to the top of the rotating shaft rod (7); a threaded column (82) is rotatably connected to the inner cavity of the frame (81); a threaded sleeve (83) is threadedly connected to the surface of the threaded column (82) and slides in the inner cavity of the frame (81); the cover plate 1 (9) and the cover plate 2 (11) are respectively installed on one side of the threaded sleeve (83); a motor (84) is fixedly installed on the top of the frame (81); and an output shaft of the motor (84) is fixedly connected to the threaded column (82).

5. A pretreatment method for recycling printing and dyeing chemical wastewater according to claim 4, characterized in that: The inner cavity of the fixed shell (123) is provided with a spring (125), and two ends of the spring (125) are respectively welded to the inner wall of the fixed shell (123) and the wedge-shaped clamping block (124).

6. A pretreatment method for recycling printing and dyeing chemical wastewater according to claim 5, characterized in that: The surface of the fixing rod (127) is slidably connected with a second frustum block (129), and the second frustum block (129) has the same size as the first frustum block (128).

7. A pretreatment method for recycling printing and dyeing chemical wastewater according to claim 6, characterized in that: Two slot bars (15) are fixedly connected to the left side of the inner cavity of the processing device (1), and two plug-in bars (14) plugged into the inner cavity of the slot bars (15) are fixedly connected to the box-type filter screen (3).

8. A pretreatment method for recycling printing and dyeing chemical wastewater according to claim 7, characterized in that: The pointed end of the conical block (162) faces the center of the liquid inlet pipe (24).

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