Node recycling device for tanning dyeing wastewater in leather production

Abstract

The invention provides a node recycling device for tanning dyeing wastewater in leather production, which relates to the technical field of wastewater recycling and comprises a treatment tank, an injection assembly and a sedimentation assembly, the whole treatment tank is of a cylindrical structure, the number of the treatment tanks is two, one end of each treatment tank is provided with an injection assembly, the injection assembly is used for conveying external wastewater to be treated into the two treatment tanks below, and the other end of each treatment tank is connected with a sedimentation assembly. The injection assembly is further used for conveying a chemical flocculation agent to the inner side of the treatment tank, and the sedimentation assembly is communicated with the interior of the collection bin, so that residual flocculation impurities can be further settled by means of the sedimentation assembly when the chemical flocculation agent flows towards a discharge area after being mixed and stirred with the flocculation agent; and impurities can be effectively prevented from being discharged outwards from the collecting bin, an additional power system is not needed, and the flocculation and sedimentation efficiency of the wastewater can also be improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of wastewater recycling, and particularly relates to a leather production tanning and dyeing wastewater node recycling device. BACKGROUND

[0002] In the tanning and dyeing processing node of leather production, the generated wastewater needs to be recycled and purified. The purpose is to reduce pollution load and resource consumption at the source. By collecting, efficiently treating and accurately recycling the high-concentration, high-toxicity and high-colority wastewater generated in the tanning (especially chrome tanning) and dyeing sections, which contains heavy metals such as chromium, dyes, salts and organic matter, and replacing part of the fresh water, the total discharge of toxic and harmful substances to the environment can be significantly reduced, the difficulty and cost of end comprehensive wastewater treatment can be reduced, and the water resources and valuable chemicals such as chromium salt, dye and salt in the wastewater can be maximally recycled. Ultimately, the water resources are closed-loop utilized, the expensive raw materials such as chrome tanning agent and dye remaining in the wastewater are recycled and utilized, the raw material cost is reduced, the enterprise water taking fee, pollution discharge fee and end treatment cost are reduced on the economic and industrial levels, the resource utilization efficiency and enterprise competitiveness are improved, the increasingly stringent environmental protection regulations are actively responded to, and the environment-friendly sustainable development is realized.

[0003] In the prior art, for the treatment process of a large amount of wastewater generated in the tanning and dyeing processing node of leather production, polyaluminum chloride (PAC) and polyacrylamide are added to achieve the purpose of coagulation and enhanced decolorization, so that the colloidal pigment and suspended matter in the wastewater can be removed, and the colority is further reduced. However, the treatment scheme is to directly add the above-mentioned chemical agents into the inside of the wastewater tank, provide a simple stirring function, and then complete the flocculation and sedimentation by static sedimentation. Obviously, the conventional scheme needs to stir after adding the chemical agents, and then perform the sedimentation treatment, which leads to a long recycling and treatment period, and if the sedimentation is not in place, part of the bottom sediment may be raised and discharged at the same time. SUMMARY

[0004] The present application aims to at least solve one of the technical problems in the related art to some extent.

[0005] To this end, the present application aims to provide a leather production tanning and dyeing wastewater node recycling device. The inside of the settling assembly is connected with the inside of the collection bin, so that when the wastewater flows towards the discharge area after mixing and stirring with the flocculating agent, the remaining flocculating impurities can be further settled by the settling assembly, the amount of solid impurities entering the inside of the top collection bin can be greatly reduced, the impurities can be effectively discharged from the collection bin, no additional power system is needed, and the efficiency of wastewater flocculation and sedimentation can be improved.

[0006] In order to achieve the above object, the present application provides a kind of leather production tanning and dyeing wastewater node recycling device, comprising: treatment tank, injection component and sedimentation component;

[0007] The treatment tank is in overall cylindrical structure, and the number of treatment tank is two, one end of the treatment tank is provided with injection component, the injection component is used to send the wastewater to be treated outside into the two treatment tanks below, the other end of the treatment tank is connected with the sedimentation component, the injection component is also used to send chemical flocculating agent into the inside of treatment tank, the inside of the treatment tank is communicated with the inside of the sedimentation component;

[0008] The inside of the treatment tank is inserted with stirring component, the two ends of the stirring component are respectively abutted on the two ends of the inner wall of the treatment tank, and the end of the stirring component is used to close the inlet area of the sedimentation component, the top end of the sedimentation component is connected with collection bin, the inside of the collection bin is provided with booster mechanism, the side of the collection bin is provided with drain port, the end of the drain port is connected with drain pipeline, and the inside of the collection bin is double-layer structure.

[0009] Further, the injection component comprises:

[0010] Impact channel, water injection pipeline and reagent delivery pipeline, the top end of the impact channel is connected with water injection pipeline, the bottom of the impact channel is communicated with the inside of the treatment tank, the surface of the reagent delivery pipeline is connected with shunt pipeline, and the reagent delivery pipeline is used to inject diluted chemical flocculating agent;

[0011] The central axis of the shunt pipeline coincides with the central axis of the treatment tank, the number of the impact channel is two, and the connection of each impact channel with the treatment tank is located on one side of the central axis of the treatment tank.

[0012] Further, the water injection pipeline injects wastewater into one end of the treatment tank, and the wastewater in the inside of the treatment tank continuously flows from one end to the other end, the gap is provided between the two treatment tanks, and equal proportion of wastewater and chemical flocculating agent is injected into the inside of each treatment tank.

[0013] Further, the stirring component comprises:

[0014] Rotating shaft, pressure bearing plate, stirring rod and diffusion hole, the two ends of the rotating shaft are sleeved with butt joint bearing, each butt joint bearing is embedded into the two ends of the inner wall of the treatment tank, the surface of the rotating shaft is inserted with stirring rod, the interval is provided between the end of the stirring rod and the inner wall of the treatment tank, and the surface of the rotating shaft is also provided with diffusion hole.

[0015] The end of the shunt pipeline passes through the inside of the treatment tank and one of the abutting bearings in sequence, and the inside of the shunt pipeline delivers the chemical flocculation agent to the inside of the rotating shaft, one end of the rotating shaft is also welded with the pressure bearing plate, and the number of the pressure bearing plates of each rotating shaft is four.

[0016] Further, the stirring assembly further comprises:

[0017] The transmission plate is welded at the end of the rotating shaft, one end of the transmission plate is integrally formed with the abutting plate, and the other end of the transmission plate is integrally formed with the counterweight plate.

[0018] The outside of the abutting plate is pressed against the end of the inner wall of the treatment tank, and the abutting plate is used to cover the communication area between the treatment tank and the settling assembly, the weight of the counterweight plate is greater than that of the abutting plate, the inside of the rotating shaft is in a hollow structure, and the chemical flocculation agent injected into the inside of the rotating shaft is delivered into the treatment tank through the diffusion hole on the surface.

[0019] Further, the settling assembly comprises:

[0020] The communication pipeline is connected with the settling bin at the bottom, the settling bin is inserted with the residue discharge pipeline at the bottom end, the surface of the residue discharge pipeline is provided with the first electromagnetic valve, and the residue discharge pipeline passes through the inside of the two settling bins in sequence.

[0021] Further, the settling bin is in a triangular structure as a whole, and the inside of the settling bin is used to accumulate the sediments in the flowing wastewater in the inside of the communication pipeline in the bottom area, and the surface of the drainage pipeline is provided with the second electromagnetic valve.

[0022] The first electromagnetic valve is used to discharge the sediments in the inside of the settling bin along the residue discharge pipeline after being opened, and the second electromagnetic valve is used to discharge the water in the inside of the collecting bin after being opened.

[0023] Further, the end of the settling assembly is connected with the conveying interlayer, the inside of the conveying interlayer is welded with the partition plate, the gap is arranged between one end of each partition plate and the inner wall of the conveying interlayer, and the bottom of the conveying interlayer is provided with the abutting port, and the inside of the settling bin is communicated with the inside of the conveying interlayer through the abutting port in the bottom.

[0024] The water in the inside of the settling bin flows from the bottom to the top along the inside of the conveying interlayer after passing through the abutting port.

[0025] Further, the pressure boosting mechanism comprises:

[0026] The pressing plate, the diaphragm, the fixed frame and the electric lifting rod are screwed at the top end of the collection bin, and the bottom end of the electric lifting rod is screwed on the surface of the pressing plate, the bottom of the pressing plate is attached with the diaphragm, the bottom of the diaphragm is attached with the fixed frame, and a gap is arranged between the outer side of the diaphragm and the inner wall of the collection bin.

[0027] The electric lifting rod is used for controlling the pressing plate to push downward, and the inner side of the diaphragm is used for collecting and storing the settled water.

[0028] Further, the inner convex strip is integrally formed on the inner side of the collection bin, the slow-flow gaps are formed on the bottom of the collection bin on both sides, the internal cavity of the conveying interlayer is communicated with the inside of the collection bin through the slow-flow gaps, the drain port is below the inner convex strip, and the bottom of the fixed frame is installed on the surface of the inner convex strip.

[0029] The technical scheme provided by the present application can include the following beneficial effects:

[0030] 1. The leather production tanning and dyeing wastewater node recycling device injects the wastewater to be treated from the position of the injection assembly into the bottom treatment tank, and drives the inside stirring assembly to rotate through the impact force generated by the water flow, so that the inside wastewater is finally stirred and treated, and the flocculation chemical agent can be mixed during the wastewater injection process, so that the flocculation and settlement of the wastewater can be achieved through the flow conveying, without the need of an additional power system, and the efficiency of the wastewater flocculation and settlement can be improved.

[0031] 2. The leather production tanning and dyeing wastewater node recycling device is communicated with the inside of the collection bin through the settling assembly at the end of the treatment tank, so that the residual flocculation impurities can be further settled by the settling assembly when the water flows towards the discharge area after the mixing and stirring with the flocculation agent, the amount of solid impurities entering the inside of the top collection bin can be greatly reduced, and the impurities discharged from the inside of the collection bin can be effectively reduced.

[0032] 3. The leather production tanning and dyeing wastewater node recycling device is provided with a pressurizing mechanism in the inside of the collection bin, the pressurizing mechanism can be used for discharging the treated wastewater, and the two electromagnetic valves can be used for lifting and discharging the settled substances generated at the bottom of the settling assembly, and the impurities and water in the inside of the settling assembly can be prevented from flowing back to the treatment tank by the stirring assembly.

[0033] Additional aspects and advantages of the present application will be made apparent from the following description. BRIEF DESCRIPTION OF DRAWINGS

[0034] The above-mentioned and / or additional aspects and advantages of the present application will become apparent and more readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings, in which:

[0035] Figure 1 is the external structure schematic diagram of the leather production tanning and dyeing wastewater node recycling device according to an embodiment of the present application;

[0036] Figure 2 is the structure schematic diagram of the injection assembly in the leather production tanning and dyeing wastewater node recycling device according to an embodiment of the present application;

[0037] Figure 3 is the structure schematic diagram of the stirring assembly in the leather production tanning and dyeing wastewater node recycling device according to an embodiment of the present application;

[0038] Figure 4 is the structure schematic diagram of the sedimentation assembly in the leather production tanning and dyeing wastewater node recycling device according to an embodiment of the present application;

[0039] Figure 5 is the cross-sectional view of the conveying interlayer in the leather production tanning and dyeing wastewater node recycling device according to an embodiment of the present application;

[0040] Figure 6 is the internal structure schematic diagram of the collection bin in the leather production tanning and dyeing wastewater node recycling device according to an embodiment of the present application;

[0041] Figure 7 is the structure schematic diagram of the pressure boosting mechanism in the leather production tanning and dyeing wastewater node recycling device according to an embodiment of the present application;

[0042] As shown in the figure: 1, treatment tank; 2, injection assembly; 3, sedimentation assembly; 4, impact channel; 5, water injection pipeline; 6, reagent conveying pipeline; 7, shunt pipeline; 8, stirring assembly; 9, rotating shaft; 10, pressure bearing plate; 11, butt joint bearing; 12, stirring rod; 13, diffusion hole; 14, transmission plate; 15, fitting plate; 16, counterweight plate; 17, communication pipeline; 18, sedimentation bin; 19, deslagging pipeline; 20, conveying interlayer; 21, collection bin; 22, water outlet; 23, water discharge pipeline; 24, pressure boosting mechanism; 25, partition; 26, notch; 27, butt joint; 28, inner convex strip; 29, slow flow gap; 30, pressing plate; 31, diaphragm; 32, fixed frame; 33, electric lifting rod; 34, first electromagnetic valve; 35, second electromagnetic valve. DETAILED DESCRIPTION

[0043] Embodiments of the present application are described below in detail with reference to the accompanying drawings, wherein the same or similar components or components having the same or similar functions are denoted by the same or similar reference numerals throughout the drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only for explanation of the present application, and should not be construed as limiting the present application. On the contrary, embodiments of the present application include all changes, modifications and equivalents falling within the spirit and scope of the appended claims.

[0044] As shown in Figures 1 to 7 The present application provides a leather production tanning and dyeing wastewater node recycling device, which comprises a treatment tank 1, an injection assembly 2 and a sedimentation assembly 3.

[0045] The treatment tank 1 is in a cylindrical structure as a whole, and the number of the treatment tank 1 is two. One end of the treatment tank 1 is provided with the injection assembly 2, which is used to deliver the external wastewater to be treated into the two treatment tanks 1 below. The other end of the treatment tank 1 is connected with the sedimentation assembly 3. The injection assembly 2 is also used to deliver the chemical flocculating agent into the inside of the treatment tank 1. The inside of the treatment tank 1 is in communication with the inside of the sedimentation assembly 3.

[0046] The inside of the treatment tank 1 is inserted with the stirring assembly 8, which is abutted against the inner walls of the treatment tank 1 at both ends. The end of the stirring assembly 8 is used to close the inlet area of the sedimentation assembly 3. The top end of the sedimentation assembly 3 is connected with the collection bin 21. The inside of the collection bin 21 is provided with the booster mechanism 24. The side of the collection bin 21 is provided with the drain port 22. The end of the drain port 22 is connected with the drain pipeline 23. The inside of the collection bin 21 is in a double-layer structure.

[0047] During operation of the present application, the wastewater to be treated is delivered into the inside of the treatment tank 1 through the injection assembly 2 at one end. Then the wastewater can flow in the inside of the treatment tank 1. At the same time, the diluted chemical flocculating agent is delivered into the inside of the treatment tank 1 through the injection assembly 2. At this time, the chemical flocculating agent can be mixed in the inside of the treatment tank 1. When the wastewater is injected, the stirring assembly 8 can be automatically triggered to operate. At this time, the wastewater mixed with the chemical flocculating agent in the inside can be fully stirred by the stirring assembly 8.

[0048] After the waste water and the chemical flocculation agent are mixed and stirred, flocculation sediment can be generated, and the water body after the sediment is generated can enter the sediment assembly 3 along the flow of the waste water, and the remaining sediment can be accumulated in the sediment assembly 3, and the supernatant part can enter the inside of the collection bin 21 through the top conveying interlayer 20, and the second electromagnetic valve 35 in the collection bin 21 is opened periodically to discharge the purified water body part, and the sediment accumulated in the sediment assembly 3 can also be discharged periodically by means of the pressurizing mechanism 24.

[0049] In the embodiment, the injection assembly 2 comprises:

[0050] The impact channel 4 is connected with the water injection pipeline 5 at the top end, the bottom of the impact channel 4 is communicated with the inside of the treatment tank 1, and the surface of the chemical agent conveying pipeline 6 is connected with the shunt pipeline 7, and the chemical agent conveying pipeline 6 is used for injecting the diluted chemical flocculation agent.

[0051] The central axis of the shunt pipeline 7 coincides with the central axis of the treatment tank 1, the number of the impact channel 4 is two, and the connection of each impact channel 4 with the treatment tank 1 is located on one side of the central axis of the treatment tank 1.

[0052] The water injection pipeline 5 injects the waste water into one end of the treatment tank 1, and the waste water in the inside of the treatment tank 1 continuously flows from one end to the other end, the gap is arranged between the two treatment tanks 1, and the same proportion of waste water and chemical flocculation agent is injected into the inside of each treatment tank 1.

[0053] The waste water to be treated is injected from the position of the injection assembly 2 to the bottom treatment tank 1, and the inside stirring assembly 8 is driven to rotate by the impact force generated by the water flow, so that the inside waste water is finally stirred, and the flocculation chemical agent is mixed during the injection of the waste water, so that the flocculation and concentration of the waste water are achieved by the flow conveying, without the need of an additional power system, and the efficiency of the flocculation and concentration of the waste water is improved.

[0054] The stirring assembly 8 comprises:

[0055] The rotating shaft 9 is sleeved with the butt joint bearing 11 at both ends, each butt joint bearing 11 is embedded into the inside wall of the treatment tank 1 at both ends, the surface of the rotating shaft 9 is inserted with the stirring rod 12, the gap is arranged between the end of the stirring rod 12 and the inside wall of the treatment tank 1, and the diffusion hole 13 is arranged on the surface of the rotating shaft 9.

[0056] The end of the shunt pipe 7 passes through the inside of the treatment tank 1 and one of the abutting bearings 11 in turn, and the inside of the shunt pipe 7 delivers the chemical flocculating agent to the inside of the rotating shaft 9, one end of the rotating shaft 9 is also welded with the pressure plate 10, and the number of the pressure plate 10 of each rotating shaft 9 is four.

[0057] The stirring assembly 8 further comprises:

[0058] The transmission plate 14 is welded at the end of the rotating shaft 9, one end of the transmission plate 14 is integrally formed with the abutting plate 15, and the other end of the transmission plate 14 is integrally formed with the counterweight plate 16;

[0059] The outside of the abutting plate 15 is pressed against the end of the inner wall of the treatment tank 1, and the abutting plate 15 is used to cover the communication area between the treatment tank 1 and the settling assembly 3, the weight of the counterweight plate 16 is greater than that of the abutting plate 15, the inside of the rotating shaft 9 is hollow, and the chemical flocculating agent injected into the inside of the rotating shaft 9 is delivered into the treatment tank 1 through the diffusion hole 13 on the surface.

[0060] Specifically, the wastewater delivered from the water injection pipe 5 in the injection assembly 2 can enter the impact channel 4 below and flow downward in the impact channel 4, and finally fall into one end of the inside of the treatment tank 1 and impact the pressure plate 10 at one end of the inside stirring assembly 8, at this time, the impact tank can drive the whole stirring assembly 8 to rotate and realize the subsequent stirring process.

[0061] While the wastewater is injected into the treatment tank 1, the chemical flocculating agent is also injected from the agent delivery pipe 6, and after passing through the shunt pipe 7, it flows into the stirring assembly 8 inside the two treatment tanks 1 respectively, and flows in the rotating shaft 9 in the stirring assembly 8, and enters the treatment tank 1 through the diffusion hole 13, realizing the mixing process of the chemical flocculating agent and the wastewater.

[0062] With the impact of the falling water body on the pressure plate 10, the rotating shaft 9 can be driven to rotate, so that after the wastewater and the chemical flocculating agent are injected, they can be directly affected by the rotation of the stirring rod 12 to start stirring and mixing treatment, and during the stirring process, the wastewater continuously flows towards the position of the settling assembly 3 at the other end, and during the flowing process, the sediment can be generated.

[0063] In this embodiment, the settling assembly 3 comprises:

[0064] The communication pipe 17 is connected with the sedimentation bin 18 at the bottom, the sedimentation bin 18 is inserted with the slag discharge pipe 19 at the bottom end, the first electromagnetic valve 34 is mounted on the surface of the slag discharge pipe 19, and the slag discharge pipe 19 sequentially passes through the interiors of the two sedimentation bins 18.

[0065] The sedimentation bin 18 is in a whole triangular structure, and the interior of the sedimentation bin 18 is used for accumulating the sediments in the wastewater flowing in the communication pipe 17 in the bottom area, and the second electromagnetic valve 35 is mounted on the surface of the drainage pipe 23.

[0066] The first electromagnetic valve 34 is used for discharging the sediments in the interior of the sedimentation bin 18 along the slag discharge pipe 19 after being opened, and the second electromagnetic valve 35 is used for discharging the water in the interior of the collection bin 21 after being opened.

[0067] The interior of the collection bin 21 is communicated with the sedimentation assembly 3 at the end of the treatment tank 1, so that the remaining flocculation impurities can be further settled by the sedimentation assembly 3 when flowing towards the discharge area after completing the mixing and stirring with the flocculation agent, the amount of solid impurities entering the interior of the top collection bin 21 is greatly reduced, and the impurities can be effectively discharged from the collection bin 21.

[0068] Specifically, part of the wastewater after fully mixing and reacting with the chemical flocculation agent enters the communication pipe 17, and the remaining sediments are accumulated in the bottom sedimentation bin 18 in the interior of the communication pipe 17, when the sediments in the interior of the sedimentation bin 18 need to be discharged, the injection of wastewater is stopped at this time, the rotating shaft 9 no longer rotates under the impact of the water flow, and thus the counterplate 15 is in a high position treatment under the action of the counterweight plate 16, and the position of the communication pipe 17 connected with the treatment tank 1 can be blocked by the counterplate 15.

[0069] At this time, the first electromagnetic valve 34 is opened, the boosting mechanism 24 in the interior of the collection bin 21 is started, and the second electromagnetic valve 35 is closed, so that the liquid in the interior is pushed by the boosting mechanism 24, and finally the pressure acts on the position of the sedimentation bin 18, and the sediments in the interior of the sedimentation bin 18 can be completely discharged by the high-pressure water flow, and after being discharged, the first electromagnetic valve 34 is immediately closed and the operation of the boosting mechanism 24 is stopped, so that the liquid part in the upper layer is intercepted.

[0070] In the embodiment, the end of the sedimentation assembly 3 is connected with the conveying interlayer 20, the interior of the conveying interlayer 20 is welded with the partition plate 25, the gap is arranged between one end of each partition plate 25 and the inner wall of the conveying interlayer 20, the butt joint 27 is arranged at the bottom of the conveying interlayer 20, and the interior of the sedimentation bin 18 is communicated with the conveying interlayer 20 through the butt joint 27 at the bottom.

[0071] The water inside the settling bin 18 flows from bottom to top along the inner side of the conveying interlayer 20 after passing through the interface 27.

[0072] The booster mechanism 24 comprises:

[0073] The pressing plate 30, the diaphragm 31, the fixed frame 32 and the electric lifting rod 33 are screwed at the top end of the collecting bin 21, and the bottom end of the electric lifting rod 33 is screwed on the surface of the pressing plate 30, the bottom of the pressing plate 30 is attached with the diaphragm 31, the bottom of the diaphragm 31 is attached with the fixed frame 32, and a gap is arranged between the outer side of the diaphragm 31 and the inner wall of the collecting bin 21.

[0074] The electric lifting rod 33 is used to control the downward pushing of the pressing plate 30, the inner side of the diaphragm 31 is used to collect and store the settled water, and the pressing plate 30 moves up and down with the electric lifting rod 33.

[0075] The inner convex strip 28 is integrally formed on the inner side of the collecting bin 21, the slow-flow gap 29 is formed on the bottom of the collecting bin 21 on both sides, the inside of the collecting bin 21 is connected with the internal cavity of the conveying interlayer 20 through the slow-flow gap 29, the drain outlet 22 is below the inner convex strip 28, and the bottom of the fixed frame 32 is installed on the surface of the inner convex strip 28.

[0076] The booster mechanism 24 is arranged in the collecting bin 21, which can be used for discharging the treated wastewater, and can also be used for lifting and discharging the settled substances generated at the bottom of the settling assembly 3 in cooperation with the two electromagnetic valves, and can also avoid the impurities and water in the inner side of the settling assembly 3 from flowing back to the treatment tank 1 in cooperation with the stirring assembly 8.

[0077] Specifically, when the liquid in the settling assembly 3 passes through the inside of the conveying interlayer 20, the disturbance of water flow stirring to the settled substances can be reduced, and the probability of the settled substances flowing to the inside of the collecting bin 21 towards the top can be reduced, so that the proportion of the settled substances in the subsequent discharge can be maximally reduced. The water body flows into the inner side of the diaphragm 31, and the diaphragm 31 can be gradually filled by continuous injection. When the water in the inside needs to be discharged, the second electromagnetic valve 35 is opened and the first electromagnetic valve 34 is closed, and the electric lifting rod 33 is controlled to extend, so that the pressing plate 30 is moved downward, the diaphragm 31 is compressed, and the water in the inner side of the diaphragm 31 is pushed to the drain outlet 22 on the side and then to the drain pipeline 23, and then discharged directly after passing through the second electromagnetic valve 35.

[0078] The terms "first", "second", etc. are used only for descriptive purposes and should not be construed as implying or teaching relative importance. In addition, in the description of the present application, the meaning of "a plurality" is two or more, unless otherwise specified.

[0079] Any process or method descriptions or blocks in flow charts described herein and elsewhere can be understood as representing modules, segments, or portions of code which include one or more executable instructions for implementing specific logical functions or steps in the process. Alternate implementations are included within the scope of the preferred embodiments of the present application in which additional functionality can be added or one or more steps can be modified, eliminated, or added.

[0080] In the description of the present application, the description of the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present application, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in one or more embodiments or examples.

[0081] Although the embodiments of the present application have been shown and described above, it is understood that the above-described embodiments are exemplary, and should not be construed as limiting the present application, and those skilled in the art can make changes, modifications, replacements and variations to the above-described embodiments within the scope of the present application.

Claims

1. A device for recycling of tanning and dyeing wastewater nodes in leather production, characterized in that, Include: Processing tank (1), injection assembly (2) and settling assembly (3); The processing tank (1) is in a cylindrical structure as a whole, and the number of the processing tank (1) is two, one end of the processing tank (1) is provided with an injection assembly (2), the injection assembly (2) is used for conveying external wastewater to be treated into the two processing tanks (1) below, the other end of the processing tank (1) is connected with a settling assembly (3), the injection assembly (2) is also used for conveying chemical flocculating agent into the inside of the processing tank (1), the inside of the processing tank (1) is communicated with the inside of the settling assembly (3); The inside of the processing tank (1) is inserted with a stirring assembly (8), both ends of the stirring assembly (8) abut against the inner walls of the processing tank (1) respectively, and the end of the stirring assembly (8) is used for closing the inlet area of the settling assembly (3), the top end of the settling assembly (3) is connected with a collection bin (21), the inside of the collection bin (21) is provided with a booster mechanism (24), the side of the collection bin (21) is provided with a drain port (22), the end of the drain port (22) is connected with a drain pipeline (23), the inside of the collection bin (21) is in a double-layer structure.

2. The device for recycling of tanning and dyeing wastewater of leather production according to claim 1, characterized in that, The injection assembly (2) comprises: Impact channel (4), water injection pipeline (5) and agent conveying pipeline (6), the top end of the impact channel (4) is connected with the water injection pipeline (5), the bottom of the impact channel (4) is communicated with the inside of the processing tank (1), the surface of the agent conveying pipeline (6) is connected with a shunt pipeline (7), the agent conveying pipeline (6) is used for injecting diluted chemical flocculating agent; The central axis of the shunt pipeline (7) coincides with the central axis of the processing tank (1), the number of the impact channel (4) is two, and the connection of each impact channel (4) with the processing tank (1) is located on one side of the central axis of the processing tank (1).

3. The device according to claim 2, characterized in that, The water injection pipeline (5) injects wastewater into one end of the processing tank (1), and the wastewater in the inside of the processing tank (1) continuously flows from one end to the other end, a gap is arranged between the two processing tanks (1), and equal proportions of wastewater and chemical flocculating agent are injected into the inside of each processing tank (1).

4. The device according to claim 3, characterized in that, The stirring assembly (8) comprises: Rotary shaft (9), pressure bearing plate (10), stirring rod (12) and diffusion hole (13), the two ends of the rotary shaft (9) are sleeved with butt joints (11), each butt joint (11) is embedded into the two ends of the inner wall of the processing tank (1), the surface of the rotary shaft (9) is inserted with a stirring rod (12), a space is arranged between the end of the stirring rod (12) and the inner wall of the processing tank (1), and a diffusion hole (13) is also formed in the surface of the rotary shaft (9); The end of the shunt pipeline (7) passes through the inside of the processing tank (1) and one of the butt joints (11) in sequence, and the inside of the shunt pipeline (7) conveys chemical flocculating agent to the inside of the rotary shaft (9), one end of the rotary shaft (9) is also welded with a pressure bearing plate (10), and the number of the pressure bearing plate (10) of each rotary shaft (9) is four.

5. The device for recycling of tanning and dyeing wastewater of leather production according to claim 4, characterized in that, The stirring assembly (8) further comprises: a transmission plate (14), a matching plate (15) and a counterweight plate (16), the transmission plate (14) is welded at the end of the rotating shaft (9), one end of the transmission plate (14) is integrally formed with the matching plate (15), the other end of the transmission plate (14) is integrally formed with the counterweight plate (16); the outer side of the matching plate (15) is pressed against the inner wall end of the treatment tank (1), and the matching plate (15) is used to cover the communication area between the treatment tank (1) and the settling assembly (3), the weight of the counterweight plate (16) is greater than that of the matching plate (15), the inside of the rotating shaft (9) is in a hollow structure, and the chemical flocculating agent injected in the inside of the rotating shaft (9) is delivered into the treatment tank (1) through the diffusion hole (13) on the surface.

6. The device for recycling of tanning and dyeing wastewater of leather production according to claim 3, characterized in that, The settling assembly (3) comprises: a communication pipeline (17), a settling bin (18) and a slag discharge pipeline (19), the bottom of the communication pipeline (17) is connected with the settling bin (18), the bottom end of the settling bin (18) is inserted with the slag discharge pipeline (19), the surface of the slag discharge pipeline (19) is provided with a first electromagnetic valve (34), and the slag discharge pipeline (19) sequentially passes through the inside of two settling bins (18).

7. The wastewater recycling device for tanning and dyeing in leather production according to claim 6, characterized in that, The settling bin (18) is in a triangular structure as a whole, and the inside of the settling bin (18) is used to accumulate the sediments in the flowing wastewater in the inside of the communication pipeline (17) in the bottom area, and the surface of the drainage pipeline (23) is provided with a second electromagnetic valve (35); after the first electromagnetic valve (34) is opened, the sediments in the inside of the settling bin (18) are discharged along the slag discharge pipeline (19), and after the second electromagnetic valve (35) is opened, the water in the inside of the collecting bin (21) is discharged.

8. The device for recycling of tanning and dyeing wastewater of leather production according to claim 6, characterized in that, The end of the settling assembly (3) is connected with a conveying interlayer (20), the inside of the conveying interlayer (20) is welded with a partition plate (25), a gap is formed between one end of each partition plate (25) and the inner wall of the conveying interlayer (20), and the bottom of the conveying interlayer (20) is provided with a butt joint (27), and the inside of the settling bin (18) is communicated with the conveying interlayer (20) through the butt joint (27) in the bottom; after the water in the inside of the settling bin (18) passes through the butt joint (27), it flows from bottom to top along the inside of the conveying interlayer (20).

9. The wastewater recycling device for tanning and dyeing in leather production according to claim 8, characterized in that, The pressurizing mechanism (24) comprises: a pressing plate (30), a diaphragm (31), a fixed frame (32) and an electric lifting rod (33), the electric lifting rod (33) is screwed at the top end of the collecting bin (21), and the bottom end of the electric lifting rod (33) is screwed on the surface of the pressing plate (30), the bottom of the pressing plate (30) is attached with the diaphragm (31), the bottom of the diaphragm (31) is attached with the fixed frame (32), and a gap is formed between the outer side of the diaphragm (31) and the inner wall of the collecting bin (21); the electric lifting rod (33) is used to control the downward pushing of the pressing plate (30), the inside of the diaphragm (31) is used to collect and store the settled water, and the pressing plate (30) moves up and down with the electric lifting rod (33).

10. The device for recycling of tanning and dyeing wastewater of leather production according to claim 9, characterized in that, The inner side of the collecting bin (21) is integrally formed with an inner convex strip (28), flow buffering gaps (29) are formed on both sides of the bottom of the collecting bin (21), and the inside of the collecting bin (21) is connected with the internal cavity of the conveying interlayer (20) through the flow buffering gaps (29), the water outlet (22) is below the inner convex strip (28), and the bottom of the fixed frame (32) is installed on the surface of the inner convex strip (28).

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