CN109650570B

CN109650570B - Printing and dyeing wastewater treatment structure

Info

Publication number: CN109650570B
Application number: CN201811499163.3A
Authority: CN
Inventors: 俞树光
Original assignee: Shaoxing Chuangcai Knitting Technology Co ltd
Current assignee: Shaoxing Chuangcai Knitting Technology Co ltd
Priority date: 2018-12-08
Filing date: 2018-12-08
Publication date: 2021-07-02
Anticipated expiration: 2038-12-08
Also published as: CN109650570A

Abstract

The invention relates to a printing and dyeing wastewater treatment structure, which relates to the technical field of printing and dyeing wastewater treatment and comprises an air flotation tank, a sludge scraping tank, a sludge tank and a plate-and-frame filter press which are sequentially connected, wherein the air flotation tank is provided with a dosing tank, the air flotation tank is provided with a feeding device which is connected with a discharge port of the dosing tank and is used for dosing, the feeding device comprises a rack arranged on the air flotation tank, a lifting pipe which is rotatably arranged on the rack in a sliding manner, a reset assembly which is arranged on the rack, is connected with the lifting pipe and can reciprocate, a water tank which is arranged on the rack and can alternately discharge water to the lifting pipe, and a sealing plate which is rotatably arranged on the rack and is rotatably connected with the lifting pipe, the dosing tank is arranged on the rack, the water injection amount of the water tank is greater. According to the invention, water is discharged at intervals through the water tank, so that the lifting pipe is lifted at intervals, and the dosing tank is opened and closed at intervals, so that workers are not required to feed materials, the labor force is saved, and the fatigue degree of the workers is reduced.

Description

Printing and dyeing wastewater treatment structure

Technical Field

The invention relates to the technical field of printing and dyeing wastewater treatment, in particular to a printing and dyeing wastewater treatment structure.

Background

The textile printing and dyeing wastewater has the characteristics of large water quantity, high organic pollutant content, large alkalinity, large water quality change and the like, belongs to one of industrial wastewater difficult to treat, contains dye, slurry, auxiliary agent, oiling agent, acid and alkali, fiber impurities, sand substances, inorganic salt and the like, and comprises desizing wastewater, boiling wastewater, bleaching wastewater, mercerizing wastewater, dyeing wastewater, printing wastewater, finishing process wastewater and alkali reduction wastewater, and can cause serious pollution to the environment if the textile printing and dyeing wastewater is directly discharged into farmlands or water bodies without treatment.

The Chinese invention with publication number CN106746206A discloses a sewage treatment process for printing and dyeing wastewater, which comprises the following steps: s1, performing wastewater concentration detection, and dividing the wastewater into high-concentration wastewater and low-concentration wastewater; s2, removing fibers of the wastewater through a stepped grating machine, and then cooling the wastewater in a cooling tower; s3, discharging the wastewater into an air floatation tank if the wastewater is high-concentration wastewater, adding PAC and PAM into the air floatation tank for coagulation reaction, and scraping slag from the high-concentration wastewater in the air floatation tank; if the wastewater is low-concentration wastewater, directly carrying out the next step; s4, discharging the wastewater into a low dissolved oxygen aeration tank for degradation of organic pollutants and precipitation of sludge; and (4) collecting the sludge precipitated in the low dissolved oxygen aeration tank in the step (S4) and the sludge transformed in the floating tank in the step (S3), discharging the sludge into a sludge tank for temporary storage, dehydrating the sludge by using a filter press, pressing the sludge into a sludge cake, transporting the sludge cake outwards, and performing the steps (S1-S6) on the supernatant of the sludge tank and the filter press water of the filter press again. In step S3, if the wastewater is high-concentration wastewater, PAC and PAM need to be added to perform a coagulation reaction, and the suspended solids in the wastewater are agglomerated into slag.

The above prior art solutions have the following drawbacks: when PAC and PAM are added, the PAC and PAM are generally added manually one time and again, so that people are required to keep beside the air floatation tank all the time, the consumed time is more, the manual input is higher, and workers are easy to fatigue for a long time.

Disclosure of Invention

The invention aims to provide a printing and dyeing wastewater treatment structure, which leads an elevating pipe to ascend and descend at intervals through water discharge of a water tank at intervals, realizes interval opening and closing of a dosing tank, does not need workers to feed materials, saves labor force and reduces the fatigue degree of the workers.

The above object of the present invention is achieved by the following technical solutions:

a printing and dyeing wastewater treatment structure, which comprises an air floatation tank, a sludge scraping tank, a sludge tank and a plate-and-frame filter press which are connected in sequence, the air flotation tank is provided with a dosing tank for adding a flocculating agent, the air flotation tank is provided with a feeding device which is connected with a discharge hole of the dosing tank and is used for controlling the dosing tank to dose, the feeding device comprises a frame arranged on the air floatation tank, a lifting pipe which is arranged on the frame in a rotatable and slidable manner, a reset assembly which is arranged on the frame, is connected with the lifting pipe and can reciprocate, a water tank which is arranged on the frame and can alternately discharge water to the lifting pipe, and a sealing plate which is rotatably arranged on the frame and is rotatably connected with the lifting pipe, the dosing tank is arranged on the rack, the water injection amount of the water tank is larger than the water outlet amount of the lifting pipe, and the sealing plate is used for opening and closing the discharge hole of the dosing tank.

By adopting the technical scheme, the water tank is used for injecting water into the lifting pipe, and because the water injection amount of the water tank is greater than the water yield of the lifting pipe, the water in the lifting pipe can be increased firstly, so that the lifting pipe slides and descends, the reset assembly and the lifting pipe descend together, the lifting pipe descends to drive the sealing plate to rotate, the opening of the dosing tank is opened by the sealing plate, and the flocculating agent can come out of the dosing tank and be added into the air floatation tank; after the water in the water tank is discharged, the water in the lifting pipe is continuously discharged, then the lifting pipe is lifted again under the action of the reset assembly, the lifting pipe drives the sealing plate to rotate in the lifting process, the discharge hole of the dosing tank is sealed, and the feeding process is completed. The interval through the water tank is drained for the elevator pipe is at intervals lifted, and the opening and closing of the dosing tank at intervals are realized, so that workers are not needed to feed materials, the labor force is saved, the labor cost is reduced, and the fatigue degree of the workers is reduced.

Preferably, the bottom of the water tank is higher than the upper opening of the lifting pipe, and a water liner connected with the water outlet is arranged in the water tank; the outer wall of the water tank is connected with a connecting pipe connected with the water outlet, one end of the connecting pipe is far away from the upper opening end of the lifting pipe, and the diameter of the water outlet of the lifting pipe is smaller than that of the connecting pipe.

Through adopting above-mentioned technical scheme, the setting of the courage of falling into the water has realized that the automatic interval of water tank drains, and is less than the diameter of connecting pipe with the diameter of the delivery port of fall way for the water in the fall way can gather when the water tank drains, realizes the decline process of fall way.

Preferably, a circulating pipe with a water pump is connected between the air floatation tank and the water tank, and a valve is arranged on the circulating pipe; the circulating pipe is provided with a filter plate with meshes at the inlet of the air floatation tank.

Through adopting above-mentioned technical scheme, if direct provide the water source for the water tank through the running water, then need a large amount of water to go the switching of drive shrouding, can lead to the waste of a large amount of water resources. Through the arrangement of the circulating pipe, the opening and closing of the sealing plate are driven by the water in the air floatation tank, so that a large amount of water resources are saved; and through the arrangement of the filter plate, large blocks of impurities can be filtered, the probability that the circulating pipe is blocked is reduced, and the circulation can be normally carried out; and through the setting of valve, the water filling speed of control water tank controls the frequency of adding the flocculating agent to the sewage demand of adaptation different concentrations.

Preferably, a linkage rod is horizontally and rotatably mounted on the rack, a transmission rod connected with the linkage rod is rotatably mounted on the outer wall of the lifting pipe, a traction rod is arranged at one end, far away from the transmission rod, of the linkage rod, and the traction rod is rotatably connected with the sealing plate; reset assembly installs including rotating sliding sleeve in the frame, slide and set up and be in sliding sleeve is sheathe in and the lower extreme with the transfer line is kept away from pull rod, cover that gangbar one end is connected are established first spring on the pull rod, set up and be in the pull rod is kept away from the stop collar of transfer line one end, first spring is in the stop collar with between the sliding sleeve.

By adopting the technical scheme, when the lifting pipe descends, the pull rod also descends synchronously along the sliding sleeve, and the first spring is compressed; the lifting pipe drives the transmission rod to move, the linkage rod rotates, the traction rod on the other side moves synchronously, and therefore the sealing plate can be opened. When the water in the lifting pipe begins to decrease, the pull rod begins to rise back under the action of the elastic restoring force of the first spring, and the pull rod rises back to drive the lifting pipe to rise back, so that the lifting pipe is lifted back.

Preferably, a slideway is arranged on the outer wall of the discharge hole of the dosing tank, the sealing plate is arranged on the slideway in a sliding manner, an elastic sheet is rotatably arranged at one end, close to the traction rod, of the sealing plate, and one end, far away from the sealing plate, of the elastic sheet is rotatably connected with the traction rod; and the frame is also provided with a loosening mechanism which is connected with the transmission rod and used for loosening the flocculating agent.

By adopting the technical scheme, the draw bar drives the elastic sheet to move, and the elastic sheet drives the sealing plate to move in the slideway, so that the opening and closing of the discharge hole of the dosing tank are realized; when the closing plate slides in the slideway, the closing plate cannot be closed difficultly because the flocculating agent falls all the time. Simultaneously, the flocculating agent can be clamped in the dosing tank, so that the flocculating agent cannot fall down, and the flocculating agent in the dosing tank can be loosened through the loosening mechanism, so that the probability of clamping the flocculating agent can be greatly reduced.

Preferably, not hard up mechanism is including installing supporting shoe in the frame, rotate and install crooked pole, one end on the supporting shoe with the transfer line is kept away from gangbar one end connect and the other end with power rod that crooked pole one end is connected, install rotate cover, threaded mounting on the supporting shoe rotate put in and one end stretch into threaded rod in the dosing tank, install the threaded rod is located the pole of ordering about outside the dosing tank is served, order about the pole with crooked pole other end slidable cup joints normal running fit, the threaded rod stretches into one end butt is located in the dosing tank on the inner wall at the discharge gate edge of dosing tank.

Through adopting above-mentioned technical scheme, when the transfer line descends, can drive the synchronous decline of power pole, the power pole descends and can drive crooked pole and rotate, and crooked pole rotates and can drive and order about the pole and move together, can drive the threaded rod when ordering about the pole motion and rotate, and the threaded rod can make the flocculating agent that is located around the threaded rod take place not hard up through the screw thread of itself when rotating to can reduce the probability that the flocculating agent blocked.

Preferably, the loosening mechanism comprises a bent pipe which is arranged in the dosing box and connected with the inner wall of the dosing box and communicated with the outside of the dosing box, a first rotating shaft which is arranged at the horizontal section of the bent pipe and extends out of the dosing box, a second rotating shaft which is arranged at the vertical section of the bent pipe and extends out of the vertical section of the bent pipe, a gear which is arranged at the position of the first rotating shaft outside the dosing box, a stirring blade which is arranged at the position of the second rotating shaft and extends out of the bent pipe and is contacted with the inner wall of a discharge hole of the dosing box, a rack which is rotatably arranged on the transmission rod and is meshed with the gear, and a limiting wheel which is arranged on the outer wall of the dosing box and is abutted against one side of the tooth surface of the rack, wherein the first rotating shaft and the second rotating shaft are connected at the bent position of the bent pipe through bevel gears in a meshing.

Through adopting above-mentioned technical scheme, when the transfer line descends, the transfer line drives rack downstream, and the rack drives first pivot rotation with gear engagement under spacing round's effect, and first pivot rotation drives the second pivot rotation, and the second pivot rotation drives and dials the movable vane rotation, dials the movable vane and can stir the flocculating agent to can become flexible with near the flocculating agent of discharge gate, thereby can reduce the probability that the flocculating agent blocked.

Preferably, the opening of the bent pipe in the dosing box is provided with a sealing sheet, and the second rotating shaft penetrates through the sealing sheet.

Through adopting above-mentioned technical scheme, the second pivot is when rotating, probably can make the flocculating agent slowly enter into in the bending tube, probably leads to the flocculating agent to fall out from the bending tube. Through the setting of gasket, can block that the flocculating agent enters into in the bending tube to can avoid the flocculating agent to leak away from the bending tube.

Preferably, the sludge impoundment with be connected with the conveyer pipe between the mud groove, the dredge pump is installed to the conveyer pipe, the sludge impoundment is provided with the acidification mechanism who is connected with into mud mouth, acidification mechanism is including installing sludge impoundment inner wall and with advance mud mouth be connected advance mud pipe, install advance the elasticity pipe of mud pipe exit end, install the elasticity pipe is kept away from advance the return bend of mud pipe one end, install support on the sludge impoundment, install add acid tank, rotation on the support install on the support and with the dwang that the return bend is connected, with the dwang rotates to be connected and can seal add the closing cap of the discharge gate of acid tank, install on the support and with the dwang rotates the resilience subassembly of connecting.

Through adopting above-mentioned technical scheme, because the mud sediment in the sludge impoundment is basicity, if directly press into the mud cake through plate and frame filter press and carry away, can cause harm to soil, and be more water can be adsorbed to basicity mud sediment for water content in the mud cake can increase, reduces plate and frame filter press's efficiency. Through the setting of acidification mechanism, add the acid to the sludge impoundment, neutralize alkaline sludge impoundment solution, can play the effect of protection soil on the one hand, on the other hand can reduce the moisture content in the mud cake. When the mud pump is used, when the mud pump pumps mud into the mud tank, the mud enters the elastic pipe through the mud inlet pipe and then enters the bent pipe; because earth is heavier, and carry and have certain power occasionally coming, consequently the return bend is because the elastic action of elasticity pipe can descend, and the return bend descends and can drive the dwang and rotate, and the dwang rotates and can drive the closing cap and descend, and the discharge gate of acidification tank is opened promptly, and the acid material of acidification tank can enter into the sludge impoundment and carry out the neutralization. And after earth is conveyed, the bent pipe rises again, the rotating rod rotates reversely under the action of the rebounding assembly, the sealing cover seals the discharge hole of the acid adding box, and acid substances do not flow out any more. Through the arrangement of the elastic pipe, the rotating rod and the springback assembly, the sludge tank can be neutralized by adding acid according to the amount of soil, so that on one hand, acidic substances are saved, the waste is reduced, and the probability of acidity of the sludge tank caused by excessive acid addition is reduced; on the other hand, the discharge hole of the acid adding box is opened and closed by utilizing the dead weight and the impulsive force of the soil, so that automatic acid adding can be realized, the acid adding process does not need to be controlled manually, the manpower is saved, and the cost is reduced.

Preferably, extension rods are arranged at two ends of the rotating rod, and one end of the extension rod, which is far away from the rotating rod, is connected with the bent pipe; one end, far away from the rotating rod, of the extension rod at the other end is connected with a hanging rod, and the sealing cover is connected to one end, far away from the extension rod, of the hanging rod; the subassembly of kick-backing is including installing fixed cover on the support, the setting of sliding are in fixed sheathe in and the lower extreme with hang the pole and rotate lifter, the cover that connects and establish and be located fixed cover top second spring, setting outside the lifter are in dead lever on the lifter, the second spring is in the dead lever with between the fixed cover.

By adopting the technical scheme, when the bent pipe descends, the bent pipe drives the connected extension rod to rotate along the rotating rod to drive the rotating rod to rotate, the rotating rod rotates to drive the extension rod on the other side to rotate, the extension rod on the other side rotates to drive the hanging rod to descend and the lifting rod to descend, and the hanging rod descends to separate the sealing cover from the discharge hole of the acid adding box, so that the acid material can be discharged; while the second spring is compressed. When the return bend rose, the elastic restoring force of second spring drove the lifter and rose, and the lifter rises and drives hanging rod, closing cap and rise, and the extension rod that links to each other with hanging rod rotates simultaneously, and the extension rod rotates and drives the dwang and rotate, and the dwang rotates the extension rod that drives the other end and rotates, and the extension rod can further mention the return bend.

In conclusion, the beneficial technical effects of the invention are as follows:

1. the lifting pipe is lifted at intervals by discharging water at intervals from the water tank, so that the dosing tank is opened and closed at intervals, workers are not required to feed materials, labor force is saved, labor cost is reduced, and fatigue degree of the workers is reduced;

2. through the arrangement of the circulating pipe, the opening and closing of the sealing plate are driven by the water in the air floatation tank, so that a large amount of water resources are saved; the water filling speed of the water tank and the frequency of adding the flocculating agent are controlled by setting the valve so as to adapt to the sewage requirements of different concentrations;

3. the flocculant in the dosing tank can be loosened through the arrangement of the loosening mechanism, so that the probability of the flocculant being clamped can be greatly reduced;

4. through the setting of acidification mechanism, add the acid to the sludge impoundment, neutralize alkaline sludge impoundment solution, can play the effect of protection soil on the one hand, on the other hand can reduce the moisture content in the mud cake.

Drawings

FIG. 1 is a schematic view of a three-dimensional structure according to a first embodiment;

FIG. 2 is a schematic diagram (I) of the three-dimensional structure of the floatation tank and the feeding device in the first embodiment;

FIG. 3 is a schematic diagram (II) of the three-dimensional structure of the floatation tank and the feeding device in the first embodiment, wherein the feeding tank and the water tank are cut away;

FIG. 4 is a schematic diagram (III) of the three-dimensional structure of the floatation tank and the feeding device in the first embodiment;

FIG. 5 is an enlarged schematic view of portion A of FIG. 3;

FIG. 6 is an enlarged schematic view of portion B of FIG. 4;

FIG. 7 is an enlarged schematic view of portion C of FIG. 3;

FIG. 8 is a schematic view showing a three-dimensional structure of a sludge tank and an acid adding mechanism in the first embodiment, in which the sludge tank is cut away;

FIG. 9 is an enlarged schematic view of portion D of FIG. 8;

FIG. 10 is an enlarged schematic view of section E of FIG. 8;

FIG. 11 is a schematic perspective view of a feeding device according to a second embodiment, in which a feeding box and a bending pipe are cut away;

fig. 12 is an enlarged schematic view of portion F of fig. 11.

Reference numerals: 11. an air floatation tank; 12. a mud scraping pool; 13. a mud tank; 14. a sludge tank; 15. a plate-and-frame filter press; 16. a delivery pipe; 17. a mud pump; 21. a dosing box; 211. a slideway; 31. a frame; 311. a collar; 312. a first limiting cylinder; 313. a linkage rod; 314. a draw bar; 32. a lifting pipe; 321. a water outlet pipe; 322. hanging a ring; 323. a transmission rod; 331. a sliding sleeve; 332. a pull rod; 333. a first spring; 334. a limiting sleeve; 335. a circular ring; 34. a water tank; 341. a water falling liner; 342. a connecting pipe; 343. a circulation pipe; 344. a valve; 345. filtering the plate; 35. closing the plate; 351. an elastic sheet; 41. a support block; 42. a curved rod; 43. a power rod; 44. rotating the sleeve; 45. a threaded rod; 46. an actuating lever; 51. a mud inlet pipe; 52. an elastic tube; 53. bending the pipe; 54. a support; 541. a second limiting cylinder; 542. a vertical rod; 55. adding an acid box; 551. a liquid discharge pipe; 56. rotating the rod; 561. an extension rod; 562. a cross bar; 563. a connecting rod; 564. a hoisting ring; 565. connecting blocks; 566. a hanging rod; 57. sealing the cover; 581. fixing a sleeve; 582. a lifting rod; 583. a second spring; 584. fixing the rod; 585. hooking; 61. bending the tube; 611. a support frame; 612. sealing the sheet; 62. a first rotating shaft; 63. a second rotating shaft; 64. a gear; 65. poking the blades; 66. a rack; 67. and a limiting wheel.

Detailed Description

The present invention is described in further detail below with reference to the attached drawings.

The first embodiment is as follows:

the utility model provides a printing and dyeing wastewater treatment structure, refers to fig. 1, including the air supporting pond 11 that connects gradually, scrape mud pond 12, mud groove 13, sludge impoundment 14 and plate and frame filter press 15, air supporting pond 11 is provided with the dosing tank 21 that adds the flocculating agent, and the flocculating agent is the solid particle, still is provided with and is connected with the discharge gate of dosing tank 21 and is used for controlling the feeding device that dosing tank 21 added the medicine.

Referring to fig. 2 and 3, the feeding device includes a frame 31, an elevating pipe 32, a reset assembly, a water tank 34 and a sealing plate 35, the frame 31 is fixedly disposed on the side wall of the air flotation tank 11, the feeding box 21 is fixedly mounted on the frame 31, the bottom of the feeding box 21 is in an inverted cone shape, and the discharge hole is at the bottom. The water tank 34 is fixedly arranged on the frame 31, a water outlet is arranged at the bottom of the water tank 34, a water liner 341 connected with the water outlet is fixedly arranged in the water tank 34, the water liner 341 can realize the interval water discharge of the water tank 34, and a connecting pipe 342 connected with the water outlet is fixedly connected with the outer wall of the water tank 34. The side wall of the water tank 34 and the side wall of the air flotation tank 11 are connected with a circulating pipe 343 with a water pump, and a valve 344 is arranged on the circulating pipe 343 and used for controlling the water delivery amount; the circulating pipe 343 is fixedly provided with a filter plate 345 with meshes at the inlet of the air flotation tank 11 to prevent large solids from entering the circulating pipe 343 to cause the blocking of the circulating pipe 343, and the water injection speed of the circulating pipe 343 is lower than the water discharge speed of the water tank 34.

Lantern rings 311 are fixedly arranged on the frame 31 along the vertical direction at intervals, and the inner diameter of the lantern rings 311 is larger than the outer diameter of the lifting pipe 32; the lifting pipe 32 can be rotatably and slidably arranged on the lantern ring 311, the lower end of the lifting pipe 32 is provided with a water outlet pipe 321, and the pipe diameter of the water outlet pipe 321 is smaller than that of the connecting pipe 342; the height of the upper opening of the lifting pipe 32 is lower than the height of the bottom of the water tank 34, the lower end of the connecting pipe 342 is lapped on the upper end opening of the lifting pipe 32 and extends into the lifting pipe 32, and the air flotation tank 11 is arranged below the lifting pipe 32.

Referring to fig. 4 and 5, a first limiting cylinder 312 which is horizontal in the axial direction is fixedly arranged on the frame 31, and a linkage rod 313 is rotatably arranged on the first limiting cylinder 312. The outer walls of two opposite sides of the lower end of the lifting pipe 32 are sleeved with hanging rings 322, the lifting pipe 32 is rotatably provided with two transmission rods 323 through the two hanging rings 322, two ends of the two transmission rods 323 are close to each other and fixedly connected, and the lifting pipe 32 is enclosed in a ring enclosed by the two transmission rods 323. One ends of the two transmission rods 323 close to the linkage rods 313 are fixedly connected with the linkage rods 313 through fixing blocks.

Referring to fig. 6, a draw bar 314 is fixedly arranged at one end of the linkage rod 313 far away from the transmission rod 323, and the draw bar 314 is axially perpendicular to the linkage rod 313. The outer wall of the discharge hole of the dosing box 21 is fixedly provided with a slide way 211, the sealing plate 35 is arranged on the slide way 211 in a sliding mode, one end, close to the traction rod 314, of the sealing plate 35 is hinged to an elastic sheet 351, and one end, far away from the sealing plate 35, of the elastic sheet 351 is hinged to one end, far away from the linkage rod 313, of the traction rod 314.

Referring to fig. 7, the reset assembly includes a sliding sleeve 331, a pull rod 332, a first spring 333 and a limit sleeve 334, the sliding sleeve 331 is hinged on the frame 31, and a rotation plane of the sliding sleeve 331 is parallel to a rotation plane of the linkage rod 313. The pull rod 332 is arranged on the sliding sleeve 331 in a sliding mode, a circular ring 335 (see fig. 5) is fixedly arranged at the lower end of the sliding sleeve 331, and the circular ring 335 is sleeved on one end, away from the linkage rod 313, of the transmission rod 323. The limiting sleeve 334 is fixedly arranged at the upper end of the pull rod 332, the first spring 333 is sleeved on the pull rod 332 and is positioned between the limiting sleeve 334 and the sliding sleeve 331, and the first spring 333 is always in a compressed state.

Referring to fig. 3 and 7, a loosening mechanism connected to the driving rod 323 and used for loosening the flocculant is provided on the frame 31. The loosening mechanism comprises a supporting block 41, a bending rod 42, a power rod 43, a rotating sleeve 44, a threaded rod 45 and a driving rod 46, wherein the supporting block 41 is fixedly arranged on the rack 31 and is axially horizontal; the bending rod 42 is U-shaped, and the supporting block 41 penetrates through the middle part of the bending rod 42, so that the bending rod 42 can rotate around the supporting block 41; one end of the power rod 43 is hinged with one end of the transmission rod 323, which is far away from the linkage rod 313, and the other end is hinged with one end of the bending rod 42, which is close to the lifting pipe 32; the rotating sleeve 44 is fixedly arranged at one end of the supporting block 41 far away from the bent rod 42, the threaded rod 45 is installed on the rotating sleeve 44 in a threaded mode, and one end of the threaded rod 45 extends into the dosing box 21 and abuts against the inner wall of the edge of the discharge hole of the dosing box 21.

Crooked being the annular ring of power pole 43 one end is kept away from to crooked pole 42, order about pole 46 one end fixed the setting at threaded rod 45 on the outer one end of dosing tank 21, order about the annular ring that the pole 46 other end passed crooked pole 42, and the inner circle cross-section of the annular ring of crooked pole 42 is greater than the cross-section of ordering about pole 46, order about pole 46 can swing in the annular ring of crooked pole 42, and the annular ring of crooked pole 42 can drive orders about pole 46 motion, make order about pole 46 and can drive threaded rod 45 and rotate, threaded rod 45 rotates and can drive the flocculating agent that is located near threaded rod 45 not hard up.

Referring to fig. 1 and 8, a delivery pipe 16 is connected between the sludge tank 14 and the sludge tank 13, a sludge pump 17 is installed on the delivery pipe 16, and the sludge pump 17 pumps the soil in the sludge tank 13 into the sludge tank 14. Since the soil is alkaline and needs to be neutralized, an acid adding mechanism is provided in the sludge tank 14. The acid adding mechanism comprises a mud inlet pipe 51, an elastic pipe 52, a bent pipe 53, a support 54, an acid adding box 55, a rotating rod 56, a sealing cover 57 and a rebound assembly, wherein the elastic pipe 52 is a corrugated rubber pipe. The sludge inlet pipe 51 is fixedly arranged on the inner wall of the sludge tank 14 and is connected with the sludge inlet, and one end of the sludge inlet pipe 51, which is far away from the inner wall of the sludge tank 14, is bent downwards; one end of the elastic pipe 52 is fixedly arranged at the outlet of the mud inlet pipe 51, and one end of the bent pipe 53 is fixedly connected with the lower end of the elastic pipe 52; when soil is conveyed, the gravity and the impact of the soil itself can cause the elastic tube 52 to be elongated, and the bent tube 53 can be descended.

Referring to fig. 8, a bracket 54 is fixedly provided on the side wall of the sludge tank 14, an acid adding tank 55 is fixedly provided on the bracket 54, a drain pipe 551 having a bent shape is provided on the side wall of the acid adding tank 55, and the drain pipe 551 has an opening facing downward and is positioned above the sludge tank 14. The bracket 54 is fixedly provided with a second limiting cylinder 541 which is horizontal in the axial direction, and the rotating rod 56 is rotatably installed on the second limiting cylinder 541. An extension rod 561 is integrally formed at two ends of the rotating rod 56, and the extension rod 561 is arranged at the same side of the rotating rod 56 and is perpendicular to the rotating rod 56; a cross rod 562 is fixedly arranged at one end, far away from the rotating rod 56, of the extension rod 561 close to the bent pipe 53, and the cross rod 562 is horizontal and axially vertical to the extension rod 561; the opposite sides of the outer wall of the elbow 53 are hinged with connecting rods 563, and the other ends of the two connecting rods 563 are hinged with the two ends of the cross rod 562 respectively.

Referring to fig. 9 and 10, a hanging ring 564 is fixedly arranged at one end of the extending rod 561 at the other end, which is far away from the rotating rod 56, a connecting block 565 is hung from the hanging ring 564, hanging rods 566 are hung at two ends of the connecting block 565, a cover 57 is fixedly connected with the lower ends of the two hanging rods 566, and the cover 57 is used for sealing the opening of the drain pipe 551. The rebounding assembly comprises a fixing sleeve 581, a lifting rod 582, a second spring 583 and a fixing rod 584, wherein a vertical rod 542 is fixedly arranged on the bracket 54, the fixing sleeve 581 is fixedly arranged on the vertical rod 542, and the axial direction of the fixing sleeve 581 is vertical; the lifting rod 582 is arranged on the fixed sleeve 581 in a sliding manner, the diameter of the lifting rod 582 is smaller than the inner diameter of the fixed sleeve 581, a hook 585 is hung at the lower end of the lifting rod 582, and the hook 585 is hooked on the hanging ring 564; the second spring 583 is sleeved outside the lifting rod 582 above the fixed sleeve 581, the fixed rod 584 transversely passes through the lifting rod 582 and is fixed on the lifting rod 582, the second spring 583 is between the fixed rod 584 and the fixed sleeve 581, and the second spring 583 is always in a compressed state.

The working principle of the embodiment is as follows:

when the sewage is treated, the water in the air flotation tank 11 is pumped into the water tank 34 by the water pump through the circulating pipe 343, after the water in the water tank 34 submerges the water falling liner 341, the water falling liner 341 opens the water outlet of the water tank 34, and the water flows from the water tank 34 to the lifting pipe 32 through the connecting pipe 342; since the drain speed of the lift lever 582 is lower than the water supply speed of the water tank 34, water in the lift pipe 32 accumulates, so that the lift lever 582 as a whole increases in weight and then starts to descend.

In the descending process, the transmission rod 323 is driven to rotate along the linkage rod 313, on one hand, the transmission rod 323 drives the linkage rod 313 to rotate, the linkage rod 313 rotates to drive the traction rod 314 at the other end to rotate, the traction rod 314 at the other end pulls the sealing plate 35 through the elastic sheet 351 to open the outlet of the dosing tank 21, and the flocculating agent in the dosing tank 21 falls into the air flotation tank 11. On the other hand, the driving lever 323 moves the pull rod 332 downward, and the first spring 333 is compressed. On the other hand, the transmission rod 323 drives the power rod 43 to descend, the power rod 43 drives the bent rod 42 to rotate, the bent rod 42 rotates to drive the driving rod 46 to move, the driving rod 46 drives the threaded rod 45 to rotate after moving, and one end of the threaded rod 45 extending into the dosing tank 21 loosens the flocculant nearby.

When the water tank 34 is filled with water, the lifting pipe 32 only discharges water, the gravity of the lifting rod 582 is reduced, the elastic restoring force of the first spring 333 enables the pull rod 332 to ascend, the pull rod 332 ascends to drive the transmission rod 323 to ascend, and the sealing plate 35 slides reversely to seal the outlet of the dosing tank 21; the power rod 43 will rise, causing the threaded rod 45 to rotate in the opposite direction.

After soil in the mud groove 13 is pumped into the mud inlet pipe 51 through the mud pump 17, the soil passes through the elastic pipe 52 and the bent pipe 53 in sequence, the elastic pipe 52 is stretched, and the bent pipe 53 moves downwards; the elbow 53 moves downwards to drive the connecting rod 563 and the cross rod 562 to move downwards, the extending rod 561 connected with the cross rod 562 is forced by the cross rod 562 to move, so that the rotating rod 56 is driven to rotate, the rotating rod 56 rotates to drive the other extending rod 561 to move synchronously, the lifting rod 582, the hook 585, the hanging ring 564, the connecting block 565, the hanging rod 566 and the sealing cover 57 move downwards synchronously, so that an opening of the liquid discharge pipe 551 is opened, and the acidic liquid falls to the sludge pond 14 for neutralization. After the lift lever 582 moves downward, the second spring 583 is compressed.

After the soil is transported, the second spring 583 pulls up the lifting rod 582 by means of elastic restoring force, and simultaneously the hook 585, the hanging ring 564, the connecting block 565, the hanging rod 566 and the cover 57 are lifted up synchronously, the opening of the drain pipe 551 is closed, and the extension rod 561 rotates along the rotating rod 56 to lift the bent pipe 53.

Example two:

a printing and dyeing wastewater treatment structure, referring to fig. 11 and 12, is different from the first embodiment in that: the loosening mechanism comprises a bent pipe 61, a first rotating shaft 62, a second rotating shaft 63, a gear 64, a shifting blade 65, a rack 66 and a limiting wheel 67. The bending pipe 61 is fixedly installed in the dosing box 21, connected with the inner wall of the dosing box 21 and communicated with the outside of the dosing box 21, the section of the bending pipe 61 is annular, one section of the bending pipe 61 is horizontal, the other section of the bending pipe is vertical, and the circle center of the vertical section is coaxial with the circle center of the outlet of the dosing box 21. Supporting frames 611 are arranged in the horizontal section and the vertical section of the bent pipe 61, the first rotating shaft 62 is rotatably arranged on the supporting frames 611 of the horizontal section of the bent pipe 61, one end of the first rotating shaft 62 extends out of the dosing box 21, and the gear 64 is fixedly arranged on the first rotating shaft 62 extending out of the dosing box 21.

The second rotating shaft 63 is rotatably mounted on the support frame 611 of the vertical section of the bent pipe 61, the lower end of the second rotating shaft 63 extends out of the bent pipe 61, the toggle blade 65 is fixedly mounted at one end of the second rotating shaft 63 extending out of the bent pipe 61, and the toggle blade 65 is in contact with the inner wall of the discharge hole of the dosing box 21. The opening of the bent pipe 61 at one end in the dosing box 21 is fixedly provided with a sealing sheet 612, the sealing sheet 612 is made of rubber, and the second rotating shaft 63 penetrates through the sealing sheet 612. The first rotating shaft 62 and the second rotating shaft 63 are in meshed connection at the bent part of the bent pipe 61 through a bevel gear 64. One end of the rack 66 is hinged to one end of the transmission rod 323, which is far away from the linkage rod 313, and the rack 66 is meshed with the gear 64; the limiting wheel 67 is rotatably mounted on the outer wall of the dosing box 21 through a pin shaft, and the rack 66 is clamped between the gear 64 and the limiting wheel 67.

The working principle of the embodiment is as follows:

when the transmission rod 323 moves, the rack 66 and the transmission rod 323 synchronously move, the rack 66 drives the gear 64 to rotate, the gear 64 rotates to drive the first rotating shaft 62 to rotate, the first rotating shaft 62 rotates to drive the second rotating shaft 63 to rotate, the second rotating shaft 63 rotates to drive the stirring blade 65 to rotate, and the stirring blade 65 can stir the flocculating agent, so that the flocculating agent near the discharge port can be loosened, and the probability of flocculating agent jamming can be reduced.

The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may occur to those skilled in the art without departing from the principle of the invention, and are considered to be within the scope of the invention.

Claims

1. A printing and dyeing wastewater treatment structure comprises an air floatation tank (11), a mud scraping tank (12), a mud groove (13), a sludge tank (14) and a plate-and-frame filter press (15) which are sequentially connected, wherein the air floatation tank (11) is provided with a dosing tank (21) for adding a flocculating agent, the printing and dyeing wastewater treatment structure is characterized in that the air floatation tank (11) is provided with a feeding device which is connected with a discharge port of the dosing tank (21) and is used for controlling the dosing of the dosing tank (21), the feeding device comprises a rack (31) arranged on the air floatation tank (11), a lifting pipe (32) which is rotatably arranged on the rack (31) in a sliding manner, a resetting component which is arranged on the rack (31), is connected with the lifting pipe (32) and can reciprocate, a water tank (34) which is arranged on the rack (31) and can alternately discharge water to the lifting pipe (32), and a sealing plate (35) which is rotatably arranged on the rack (31) and is rotatably connected with the lifting pipe (32), the dosing box (21) is arranged on the rack (31), the water injection amount of the water tank (34) is larger than the water outlet amount of the lifting pipe (32), and the sealing plate (35) is used for opening and closing a discharge hole of the dosing box (21); the bottom of the water tank (34) is higher than the upper opening of the lifting pipe (32), and a water liner (341) connected with a water outlet is arranged in the water tank (34); the outer wall of the water tank (34) is connected with a connecting pipe (342) connected with the water outlet, one end of the connecting pipe (342) is far away from the upper opening end of the lifting pipe (32), and the diameter of the water outlet of the lifting pipe (32) is smaller than that of the connecting pipe (342).

2. The printing and dyeing wastewater treatment structure according to claim 1, characterized in that: a circulating pipe (343) with a water pump is connected between the air flotation tank (11) and the water tank (34), and a valve (344) is arranged on the circulating pipe (343); the circulating pipe (343) is provided with a filter plate (345) with meshes at the inlet of the air floatation tank (11).

3. The printing and dyeing wastewater treatment structure according to claim 1, characterized in that: a linkage rod (313) is horizontally and rotatably mounted on the rack (31), a transmission rod (323) connected with the linkage rod (313) is rotatably mounted on the outer wall of the lifting pipe (32), a traction rod (314) is arranged at one end, far away from the transmission rod (323), of the linkage rod (313), and the traction rod (314) is rotatably connected with the sealing plate (35); reset assembly is including rotating the installation slide cover (331), the setting of sliding on frame (31) slide cover (331) on and the lower extreme with transfer line (323) are kept away from pull rod (332), the cover that gangbar (313) one end is connected are established first spring (333) on pull rod (332), setting are in pull rod (332) are kept away from spacing sleeve (334) of transfer line (323) one end, first spring (333) are in spacing sleeve (334) with between slide cover (331).

4. The printing and dyeing wastewater treatment structure according to claim 3, characterized in that: a slide way (211) is arranged on the outer wall of the discharge hole of the dosing box (21), the sealing plate (35) is arranged on the slide way (211) in a sliding mode, an elastic piece (351) is rotatably installed at one end, close to the traction rod (314), of the sealing plate (35), and one end, far away from the sealing plate (35), of the elastic piece (351) is rotatably connected with the traction rod (314); the frame (31) is also provided with a loosening mechanism which is connected with the transmission rod (323) and used for loosening the flocculating agent.

5. The printing and dyeing wastewater treatment structure according to claim 4, characterized in that: the loosening mechanism comprises a supporting block (41) arranged on the rack (31), a bent rod (42) rotatably arranged on the supporting block (41), a power rod (43) with one end connected with one end of the transmission rod (323) far away from the linkage rod (313) and the other end connected with one end of the bent rod (42), a rotating sleeve (44) arranged on the supporting block (41), a threaded rod (45) which is arranged on the rotating sleeve (44) in a threaded manner and one end of which extends into the dosing box (21), and a driving rod (46) arranged at one end of the threaded rod (45) positioned outside the dosing box (21), the driving rod (46) is in running fit with the sliding sleeve (331) at the other end of the bending rod (42), the threaded rod (45) extends into the dosing box (21), and one end of the threaded rod abuts against the inner wall of the edge of the discharge hole of the dosing box (21).

6. The printing and dyeing wastewater treatment structure according to claim 4, characterized in that: the loosening mechanism comprises a bent pipe (61) which is arranged in the feeding box (21), connected with the inner wall of the feeding box (21) and communicated with the outside of the feeding box (21), a first rotating shaft (62) which is arranged at the horizontal section of the bent pipe (61) and extends out of the feeding box (21), a second rotating shaft (63) which is arranged at the vertical section of the bent pipe (61) and extends out of the vertical section of the bent pipe (61), a gear (64) which is arranged at the first rotating shaft (62) and is positioned outside the feeding box (21), a stirring blade (65) which is arranged at the second rotating shaft (63) and extends out of the bent pipe (61) and is contacted with the inner wall of the discharge hole of the feeding box (21), a rack (66) which is rotatably arranged on the transmission rod (323) and is meshed with the gear (64), and a limiting wheel (67) which is arranged on the outer wall of the feeding box (21) and is abutted to one side of the rack (66) departing from the tooth surface, the first rotating shaft (62) and the second rotating shaft (63) are in meshing connection at the bending position of the bending pipe (61) through bevel gears.

7. The printing and dyeing wastewater treatment structure according to claim 6, characterized in that: the opening of the bent pipe (61) in the dosing box (21) is provided with a sealing sheet (612), and the second rotating shaft (63) penetrates through the sealing sheet (612).

8. The printing and dyeing wastewater treatment structure according to claim 1, characterized in that: sludge impoundment (14) with be connected with conveyer pipe (16) between mud groove (13), dredge pump (17) are installed to conveyer pipe (16), sludge impoundment (14) are provided with the acidification mechanism who is connected with into mud mouth, acidification mechanism is including installing sludge impoundment (14) inner wall and with advance mud mouth and be connected advance mud pipe (51), install advance the elasticity pipe (52) of mud pipe (51) exit end, install elasticity pipe (52) are kept away from advance return bend (53) of mud pipe (51) one end, install support (54) on sludge impoundment (14), install acidification case (55) on support (54), rotate and install on support (54) and with dwang (56) that return bend (53) are connected, with dwang (56) rotate to be connected and can seal closing cover (57) of the discharge gate of acidification case (55), A rebound assembly mounted on the bracket (54) and rotatably connected with the rotating rod (56).

9. The printing and dyeing wastewater treatment structure according to claim 8, characterized in that: an extension rod (561) is arranged at two ends of the rotating rod (56), and one end, far away from the rotating rod (56), of the extension rod (561) at one end is connected with the bent pipe (53); one end, far away from the rotating rod (56), of the extension rod (561) at the other end is connected with a hanging rod (566), and the sealing cover (57) is connected to one end, far away from the extension rod (561), of the hanging rod (566); the rebounding assembly comprises a fixed sleeve (581) arranged on the support (54), a lifting rod (582) which is arranged on the fixed sleeve (581) in a sliding mode, the lower end of the lifting rod (582) is rotatably connected with the hanging rod (566), a second spring (583) which is arranged above the fixed sleeve (581) and is arranged outside the lifting rod (582), and a fixed rod (584) arranged on the lifting rod (582), wherein the second spring (583) is arranged between the fixed rod (584) and the fixed sleeve (581).