Domestic wastewater comprehensive treatment system

Abstract

The utility model provides a domestic wastewater comprehensive treatment system. The domestic wastewater comprehensive treatment system comprises an evaporation device, a storage device and a recovery device, the evaporation device comprises an evaporation cylinder, and a heating piece is arranged in the evaporation cylinder; the driving mechanism is provided with a rotating rod arranged in the evaporation barrel and a driving piece located below the evaporation barrel, and the bottom end of the rotating rod penetrates through the bottom wall of the evaporation barrel to be connected with the output end of the driving piece; the stirring mechanism is provided with a stirring assembly arranged in the radial direction of the rotating rod and a scraping plate arranged on the edge of the stirring assembly; the material storage device comprises a material storage barrel, a backflow pipeline and a material supply pipeline, and the two ends of the backflow pipeline and the two ends of the material supply pipeline communicate with the material storage barrel and the evaporation barrel correspondingly; the recovery device comprises a condenser and a collection box connected with the bottom of the condenser, and the condenser is further communicated with the backflow pipeline and the feeding pipeline. Through the synergistic effect of the evaporation device, the storage device and the recovery device, efficient treatment and resource recycling of the domestic wastewater are achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to life wastewater recovery treatment technical field, concretely relates to a life wastewater comprehensive treatment system. BACKGROUND

[0002] The composition of life wastewater is complex, containing organic matter, suspended matter, nitrogen and phosphorus nutrients and trace pollutants. The traditional wastewater treatment technology mainly relies on biological treatment process (such as activated sludge method, biological membrane method) and physical and chemical treatment (such as sedimentation, filtration), but these methods have limitations when treating high-salinity, high-concentration wastewater or needing resource recovery. For example, the microbial activity of biological treatment is significantly inhibited for high-salinity wastewater, and although conventional evaporation technology can effectively concentrate wastewater, it has problems such as high energy consumption, equipment scaling, low heat transfer efficiency, and lack of systematic design for the recovery and reuse of evaporation products.

[0003] In recent years, evaporation crystallization technology has attracted attention due to its potential in wastewater concentration and resource recovery. Existing evaporation devices mostly use static heating or simple stirring structure, which easily leads to scaling on the inner wall of the evaporation cylinder, reduces the heat transfer efficiency, and makes it difficult to clean the residual solid slag. In addition, the traditional system has low efficiency in condensing and recycling the evaporation steam and utilizing the waste heat, and cannot realize the coordinated recovery of water, heat and salt, resulting in resource waste.

[0004] Therefore, it is urgent to develop a life wastewater comprehensive treatment system with high efficiency, strong anti-scaling ability and high resource recovery rate, to solve the problems of high energy consumption, difficult maintenance and low resource utilization rate of existing treatment devices, and to provide an innovative solution for the sustainable treatment of life wastewater. SUMMARY

[0005] In view of the above problems, the utility model embodiment provides a life wastewater comprehensive treatment system to solve the problems of low heat transfer efficiency, easy scaling of equipment and high energy consumption of existing treatment devices.

[0006] The utility model embodiment provides a life wastewater comprehensive treatment system, which comprises an evaporation device and a storage device, and a recovery device connected with the evaporation device and the storage device respectively.

[0007] The evaporation device comprises:

[0008] The evaporation cylinder is internally provided with a heating element;

[0009] The driving mechanism has a rotating rod arranged in the interior of the evaporation cylinder and a driving element located below the evaporation cylinder, and the bottom end of the rotating rod penetrates through the bottom wall of the evaporation cylinder and is connected with the output end of the driving element;

[0010] The stirring mechanism has a stirring assembly arranged in the radial direction of the rotating rod and a scraper arranged at the edge of the stirring assembly, and the scraper can abut against the inner wall of the evaporation cylinder;

[0011] The storage device comprises a storage cylinder, a reflux pipeline and a feeding pipeline, two ends of the reflux pipeline and the feeding pipeline are respectively connected with the storage cylinder and the evaporation cylinder, and the reflux pipeline is located above the feeding pipeline;

[0012] The recovery device comprises a condenser and a collection box connected with the bottom of the condenser, and the condenser is also connected with the reflux pipeline and the feeding pipeline.

[0013] In some embodiments, a connecting hole is arranged at the top end of the evaporation cylinder, the evaporation device further comprises a sealing cover plate matched with the connecting hole, a handle is arranged at the top of the sealing cover plate, and the heating element is fixed to the bottom of the sealing cover plate.

[0014] In some embodiments, a limiting sleeve is further arranged at the center of the bottom of the sealing cover plate, and the limiting sleeve is matched with the top end of the rotating rod.

[0015] The heating element is a plurality of, and the plurality of heating elements are arranged on the outside of the limiting sleeve along the circumference of the sealing cover plate.

[0016] In some embodiments, the stirring assembly comprises a stirring plate and a stirring frame arranged at the side wall of the rotating rod respectively, the scraper is arranged at the edge of the stirring frame in an inclined manner, the stirring plate is located at the inside of the stirring frame, and the plurality of heating elements are arranged in the gap formed between the stirring frame and the stirring plate.

[0017] In some embodiments, the stirring frame comprises a frame body and a plurality of stirring blades arranged in the frame body, and the plurality of stirring blades are uniformly distributed along the axial direction of the rotating rod.

[0018] In some embodiments, a plurality of cleaning windows are arranged at the side wall of the evaporation cylinder, and the plurality of cleaning windows are respectively close to the bottom wall of the evaporation cylinder.

[0019] In some embodiments, the reflux pipeline comprises a steam outlet pipe, a circulation pipe and a circulation electromagnetic valve, two ends of the steam outlet pipe are respectively connected with the evaporation cylinder and the condenser, one end of the circulation pipe is connected with the condenser, and the other end of the circulation pipe is connected with the storage cylinder through the circulation electromagnetic valve.

[0020] In some embodiments, the feeding pipeline comprises a feeding pipe, a feeding pipe, a feeding pump, a feeding electromagnetic valve and a feeding electromagnetic valve, one end of the feeding pipe is connected with the storage cylinder, the other end of the feeding pipe is connected with the condenser through the feeding electromagnetic valve, one end of the feeding pipe is connected with the condenser, and the other end of the feeding pipe is connected with the evaporation cylinder through the feeding electromagnetic valve.

[0021] In some embodiments, the condenser comprises a condensing box, a condensing tube arranged inside the condensing box, and a condensate outlet pipe, the top end of the condensing tube is communicated with the steam outlet pipe, and the bottom end of the condensing tube is communicated with the collecting box through the condensate outlet pipe.

[0022] In some embodiments, the condensing tube is a spiral condensing tube.

[0023] Thanks to the above technical solutions, the utility model has the following technical effects:

[0024] The life wastewater comprehensive treatment system provided by the utility model realizes efficient treatment and resource recycling of life wastewater through the synergistic effect of the evaporation device, the storage device and the recovery device. Specifically, the heating element in the evaporation cylinder of the evaporation device provides the required heat for the evaporation of wastewater; the driving mechanism can drive the rotary rod and the stirring assembly to rotate, which not only enables the wastewater to be fully stirred and heated in the evaporation cylinder, but also prevents scale from agglomerating on the inner wall of the evaporation cylinder, greatly improving the evaporation efficiency of the evaporation device and shortening the treatment time of the equipment; the scraper can scrape off the scale and impurities attached to the inner wall of the evaporation cylinder, preventing the scale and impurities from accumulating and affecting the evaporation effect and service life of the equipment. The storage cylinder in the storage device is used for storing the wastewater to be treated and the treated material, the backflow pipeline returns the wastewater and impurities that are not evaporated in the evaporation process to the storage cylinder for reprocessing, and the feed pipeline delivers the wastewater in the storage cylinder to the evaporation cylinder for evaporation treatment, realizing the internal circulation of the wastewater in the system. The setting mode of the internal circulation can greatly improve the evaporation effect of the evaporation device, so that the evaporated wastewater meets higher treatment standards; the condenser in the recovery device condenses the steam generated in the evaporation into liquid, and the collecting box collects the condensed liquid, realizing the recycling of water resources and reducing the discharge of wastewater; in addition, the low-temperature wastewater stored in the storage cylinder can enter the condenser, thereby realizing the condensation of the high-temperature steam in the condenser, and the condensed wastewater enters the storage cylinder again through the backflow pipeline, realizing efficient recycling of the steam heat.

[0025] The above description is only a summary of the technical solutions of the embodiments of the utility model, in order to more clearly understand the technical means of the embodiments of the utility model, the embodiments of the utility model can be implemented according to the content of the specification, and in order to make the above and other purposes, characteristics and advantages of the embodiments of the utility model more obvious and easy to understand, the specific implementation mode of the utility model is as follows. BRIEF DESCRIPTION OF DRAWINGS

[0026] The drawings are only used to show the embodiments and are not considered as limiting the utility model. Moreover, the same reference signs are used to represent the same parts throughout the drawings. In the drawings:

[0027] Figure 1It is a structure schematic view of a life wastewater comprehensive treatment system provided by the utility model;

[0028] Figure 2 It is a structure schematic view of an evaporation device provided by the utility model;

[0029] Figure 3 It is a structure schematic view of an evaporation cylinder provided by the utility model;

[0030] Figure 4 It is a structure schematic view of a sealing cover plate provided by the utility model;

[0031] Figure 5 It is a structure schematic view of a condenser provided by the utility model.

[0032] In the drawing,

[0033] 100 evaporation device, 110 evaporation cylinder, 111 heating piece, 112 connecting hole, 113 cleaning window, 120 driving mechanism, 121 rotating rod, 122 driving piece, 130 stirring mechanism, 131 stirring assembly, 132 scraper, 133 stirring plate, 134 stirring frame, 135 stirring blade, 140 sealing cover plate, 141 handle, 142 limiting sleeve;

[0034] 200 storage device, 210 storage cylinder, 220 backflow pipeline, 221 steam leading-out pipe, 222 circulating pipe, 223 circulating electromagnetic valve, 230 feeding pipeline, 231 material conveying pipe, 232 feeding pipe, 233 material conveying pump, 234 material conveying electromagnetic valve, 235 feeding electromagnetic valve;

[0035] 300 recovery device, 310 condenser, 311 condensing box, 312 condensing pipe, 313 condensate leading-out pipe, 320 collecting box. DETAILED DESCRIPTION

[0036] Exemplary embodiments of the present application will be described herein below with reference to the accompanying drawings. While exemplary embodiments of the present application are illustrated, it is to be understood that the present application is not limited to the exemplary embodiments described herein, but can be practiced with variation within the spirit and scope of the present application.

[0037] Referring to Figure 1 and Figure 2 The utility model discloses a kind of life wastewater comprehensive treatment systems, including evaporation device 100 and storage device 200, and recovery device 300 is connected with evaporation device 100 and storage device 200 respectively;

[0038] The evaporation device 100 comprises an evaporation cylinder 110, a driving mechanism 120 and a stirring mechanism 130, the evaporation cylinder 110 is internally provided with a heating piece 111, the driving mechanism 120 has a rotating rod 121 arranged in the evaporation cylinder 110 and a driving piece 122 located below the evaporation cylinder 110, and the bottom end of the rotating rod 121 is connected with the output end of the driving piece 122 through the bottom wall of the evaporation cylinder 110; the stirring mechanism 130 has a stirring assembly 131 arranged in the radial direction of the rotating rod 121 and a scraper 132 arranged at the edge of the stirring assembly 131, and the scraper 132 can abut against the inner wall of the evaporation cylinder 110.

[0039] The storage device 200 comprises a storage cylinder 210, a reflux pipeline 220 and a feeding pipeline 230, both ends of the reflux pipeline 220 and the feeding pipeline 230 are respectively connected with the storage cylinder 210 and the evaporation cylinder 110, and the reflux pipeline 220 is located above the feeding pipeline 230; the recovery device 300 comprises a condenser 310 and a collection tank 320 connected with the bottom of the condenser 310, and the condenser 310 is also connected with the reflux pipeline 220 and the feeding pipeline 230.

[0040] It should be noted that the composition of domestic wastewater is relatively complex, in addition to containing high-concentration salt caused by food residues, dishwashing, daily washing and cleaning, personal care or disinfectant-containing drinking water and other factors, it also contains a large amount of residues, particulate matter, suspended solids, bacteria, microorganisms and the like. Therefore, when treating such high-salt domestic wastewater, in addition to the need to treat the salt in the domestic wastewater, sometimes the other components in the domestic wastewater also need to be treated. For example, before the high-salt domestic wastewater is subjected to evaporation treatment, it also needs to be subjected to filtration, sedimentation, acid-base neutralization, anaerobic biological treatment and the like. Based on this, the domestic wastewater comprehensive treatment system provided by the present application can comprise, in addition to the evaporation device 100, the storage device 200 and the recovery device 300, a sedimentation device, an anaerobic treatment device and a filtration device and the like connected with the storage device 200 in sequence, so as to realize multi-stage pretreatment of the domestic wastewater, thereby improving the treatment effect of the system on the domestic wastewater and meeting the relevant wastewater treatment standards.

[0041] It should also be noted that the reflux pipeline 220 in the storage device 200 is arranged above the feeding pipeline 230, so that the low-temperature wastewater can be fully heat-exchanged with the high-temperature steam in the condenser 310, further improving the utilization efficiency of the system for the heat of the high-temperature steam, so that the efficient recycling of energy can be realized to a certain extent.

[0042] The utility model provides a life wastewater comprehensive treatment system, through the synergies of evaporation device 100, storage device 200 and recovery device 300, realized the efficient treatment and resource recycling of life wastewater. Specifically, the heating piece 111 in the evaporation cylinder 110 in evaporation device 100 provides the required heat for the evaporation of wastewater; the driving mechanism 120 can drive the rotary lever 121 and stirring assembly 131 to rotate, which not only can make the wastewater fully stir and heat in the evaporation cylinder 110, but also can prevent the scale in the inner wall of evaporation cylinder 110 from caking, greatly improve the evaporation efficiency of evaporation device 100, and is beneficial to shorten the processing time of equipment; the scraper 132 can scrape off the scale and impurities attached to the inner wall of evaporation cylinder 110, prevent its accumulation from affecting the evaporation effect and service life of equipment. The storage cylinder 210 in storage device 200 is used for storing the wastewater to be treated and the treated material, the backflow pipeline 220 returns the wastewater and impurities that are not evaporated in the evaporation process to the storage cylinder 210 for reprocessing, and the feed pipeline 230 transports the wastewater in the storage cylinder 210 to the evaporation cylinder 110 for evaporation treatment, realizes the internal circulation of wastewater in the system, and the setting mode of the internal circulation can greatly improve the evaporation effect of evaporation device 100, so that the evaporated wastewater meets higher treatment standards; the condenser 310 in recovery device 300 condenses the steam generated in the evaporation into liquid, and the collection tank 320 collects the condensed liquid, realizes the recycling of water resources, and reduces the discharge of wastewater; and the low-temperature wastewater stored in the storage cylinder 210 can enter the condenser 310, thereby realizing the condensation of high-temperature steam in the condenser 310, and the condensed wastewater enters the storage cylinder 210 again through the backflow pipeline 220, realizing the efficient recycling of steam heat.

[0043] In some embodiments, with reference to Figures 2-4 As shown, the top end of the evaporation cylinder 110 is provided with a connecting hole 112, and the evaporation device 100 further comprises a sealing cover plate 140 matched with the connecting hole 112, the top of the sealing cover plate 140 is provided with a handle 141, and the heating piece 111 is fixed to the bottom of the sealing cover plate 140.

[0044] The sealing cover plate 140 prevents the leakage of steam during evaporation, improves the sealing performance and safety of the evaporation device 100; the handle 141 facilitates the opening and closing of the sealing cover plate 140, and facilitates the maintenance and maintenance of the inside of the evaporation device 100; the heating piece 111 is fixed to the bottom of the sealing cover plate 140, which can uniformly heat the wastewater in the evaporation cylinder 110, improve the heating efficiency, and also facilitate the maintenance and maintenance of the heating piece 111 when the sealing cover plate 140 is disassembled.

[0045] It can be understood that the heating element 111 can be an electric heating tube, an electric heating wire, an electric heating net, etc. The present application does not limit the specific structure of the heating element 111. In addition, the present application can have various different embodiments regarding the matching mode between the sealing cover plate 140 and the connecting hole 112. For example, the sealing cover plate 140 and the connecting hole 112 can be connected in a threaded matching mode, can be connected in an interference matching mode, or can be connected in a plug-in, clamping, or other structure. The present application does not limit this.

[0046] In some embodiments, referring to FIGS. 1 and 2, the evaporation device 100 comprises a sealing cover plate 140, a rotating rod 121, a heating element 111, a stirring assembly 131, and a connecting hole 112. Figure 2 and Figure 4 As shown, the center of the bottom of the sealing cover plate 140 is further provided with a limiting sleeve 142, which matches the top end of the rotating rod 121. The heating element 111 is in plurality, and the plurality of heating elements 111 are distributed along the circumference of the sealing cover plate 140 outside the limiting sleeve 142.

[0047] The limiting sleeve 142 plays a limiting and supporting role on the rotating rod 121, ensuring the stability and smooth rotation of the rotating rod 121. The plurality of heating elements 111 are distributed along the circumference of the sealing cover plate 140 outside the limiting sleeve 142, making the heating more uniform and avoiding local overheating, thereby improving the evaporation efficiency and processing effect of the device.

[0048] In some embodiments, referring to FIGS. 1 and 2, the evaporation device 100 comprises a sealing cover plate 140, a rotating rod 121, a heating element 111, a stirring assembly 131, and a connecting hole 112. Figure 2 As shown, the stirring assembly 131 comprises a stirring plate 133 and a stirring frame 134 arranged on the side wall of the rotating rod 121, respectively. The scraper 132 is arranged obliquely on the edge of the stirring frame 134, and the stirring plate 133 is located inside the stirring frame 134. The plurality of heating elements 111 are located in the gap formed between the stirring frame 134 and the stirring plate 133.

[0049] The arrangement of the stirring plate 133 and the stirring frame 134 further enhances the stirring effect on the wastewater, making the wastewater more fully heated and evaporated in the evaporation cylinder 110. The scraper 132 is arranged obliquely on the edge of the stirring frame 134, which can scrape off the dirt and impurities on the inner wall of the evaporation cylinder 110 while stirring, keeping the inner wall of the evaporation cylinder 110 clean and improving the evaporation efficiency and service life of the device. The plurality of heating elements 111 are located in the gap formed between the stirring frame 134 and the stirring plate 133, making the heating more concentrated and efficient and accelerating the evaporation speed of the wastewater.

[0050] Preferably, the stirring plates 133 can be multiple, and the multiple stirring plates 133 are uniformly distributed along the axial direction of the rotating rod 121 respectively. The arrangement of the multiple stirring plates 133 can further improve the stirring effect of the device on the domestic wastewater, so as to facilitate the domestic wastewater to be heated more uniformly, and can reduce the probability of dirt adhering to the inner wall of the evaporation cylinder 110 to a certain extent, thereby facilitating the long-term stable operation of the device and reducing the frequency of maintenance and maintenance of the device.

[0051] Further, referring to FIG. 1, the stirring frame 134 includes a frame body (not labeled in the figure) and multiple stirring blades 135 arranged in the frame body, and the multiple stirring blades 135 are uniformly distributed along the axial direction of the rotating rod 121. Figure 2 The multiple stirring blades 135 in the stirring frame 134 are uniformly distributed along the axial direction of the rotating rod 121, which further improves the stirring effect on the wastewater, makes the flow of the wastewater in the evaporation cylinder 110 more uniform and sufficient, and improves the evaporation efficiency and treatment effect.

[0052] In some embodiments, referring to FIG. 1, the evaporation cylinder 110 is provided with a plurality of cleaning windows 113, and the plurality of cleaning windows 113 are respectively close to the bottom wall of the evaporation cylinder 110. Figure 2 The arrangement of the multiple cleaning windows 113 facilitates the user to timely remove the dirt and impurities adhering to the evaporation cylinder 110, and ensures the normal operation and treatment effect of the evaporation device 100. Optionally, the cleaning window 113 can be a glass window, so as to facilitate the user to observe the situation in the evaporation cylinder 110 in real time. Figure 3 In some embodiments, referring to FIG. 1, the evaporation cylinder 110 is provided with a plurality of cleaning windows 113, and the plurality of cleaning windows 113 are respectively close to the bottom wall of the evaporation cylinder 110.

[0053] The arrangement of the multiple cleaning windows 113 facilitates the user to timely remove the dirt and impurities adhering to the evaporation cylinder 110, and ensures the normal operation and treatment effect of the evaporation device 100. Optionally, the cleaning window 113 can be a glass window, so as to facilitate the user to observe the situation in the evaporation cylinder 110 in real time. Figure 1 The evaporation cylinder 110 is provided with a plurality of cleaning windows 113, and the plurality of cleaning windows 113 are respectively close to the bottom wall of the evaporation cylinder 110. Figure 5 The arrangement of the multiple cleaning windows 113 facilitates the user to timely remove the dirt and impurities adhering to the evaporation cylinder 110, and ensures the normal operation and treatment effect of the evaporation device 100. Optionally, the cleaning window 113 can be a glass window, so as to facilitate the user to observe the situation in the evaporation cylinder 110 in real time.

[0054] The steam outlet pipe 221 in the reflux pipeline 220 leads the steam in the evaporation cylinder 110 to the condenser 310 for condensation, and the circulation pipe 222 and the circulation electromagnetic valve 223 control the reflux of the wastewater and impurities that are not evaporated, realize the recycling of the materials, and reduce the treatment cost. Moreover, the arrangement of the circulation pipe 222 and the circulation electromagnetic valve 223 can also make the low-temperature wastewater in the condenser 310 for condensing the high-temperature steam reflux to the storage cylinder 210. This part of the wastewater has a certain temperature due to the influence of the high-temperature steam, so when this part of the wastewater enters the evaporation cylinder 110 through the feeding pipeline 230, the evaporation device 100 can evaporate and treat the wastewater at a lower heating temperature, thereby facilitating energy saving.

[0055] In some embodiments, refer to Figure 1 , Figure 3 and Figure 5 As shown, the feeding pipeline 230 includes a conveying pipe 231, a feed pipe 232, a conveying pump 233, a conveying solenoid valve 234, and a feed solenoid valve 235. One end of the conveying pipe 231 is connected to the storage cylinder 210, and the other end of the conveying pipe 231 is connected to the condenser 310 through the conveying pump 233 and the conveying solenoid valve 234. One end of the feed pipe 232 is connected to the condenser 310, and the other end of the feed pipe 232 is connected to the evaporator cylinder 110 through the feed solenoid valve 235.

[0056] The material conveying pipe 231, feed pipe 232, material pump 233, material conveying solenoid valve 234 and feed solenoid valve 235 in the material supply pipeline 230 work together to realize the delivery and control of wastewater in the storage cylinder 210 to the evaporation cylinder 110, ensuring the continuous and stable operation of the evaporation device 100.

[0057] In some embodiments, refer to Figure 5 As shown, the condenser 310 includes a condenser box 311 and a condenser tube 312 disposed inside the condenser box 311, as well as a condensate drain pipe 313. The top end of the condenser tube 312 is connected to the steam drain pipe 221, and the bottom end of the condenser tube 312 is connected to the collection box 320 through the condensate drain pipe 313.

[0058] The condenser 310 uses a condenser box 311 and condenser tubes 312 to condense steam. A condensate drain pipe 313 drains the condensed water to a collection box 320 for collection, thus achieving water resource recycling and reducing wastewater discharge. Preferably, the condenser tubes 312 are spiral condenser tubes. Spiral condenser tubes 312 have a larger heat exchange area and better heat exchange effect, enabling more efficient condensation of steam into liquid, improving condensation efficiency and water resource recycling rate.

[0059] To better understand the solution provided in this application, the working principle of the integrated domestic wastewater treatment system will be explained below:

[0060] In working, the sealing cover plate 140 cooperates with the connecting hole 112 to realize the sealing of the evaporation cylinder 110. At this time, the feed pump 233 is used to guide the wastewater in the storage cylinder 210 into the evaporation cylinder 110 through the feed pipe 231, the condenser 310 and the feed pipe 232 by opening the feed electromagnetic valve 234 and the feed electromagnetic valve 235, the heating piece 111 is used to heat and evaporate the wastewater in the evaporation cylinder 110, the rotating rod 121 is driven to rotate by the driving piece 122, the wastewater in the evaporation cylinder 110 is stirred by the stirring plate 133 and the stirring frame 134 on the rotating rod 121, the high-salinity wastewater is heated more uniformly in the evaporation cylinder 110 by the stirring mechanism 130, and the occurrence of local overheating is avoided; the setting of the stirring assembly 131 can prevent scale from being formed on the inner wall of the evaporation cylinder 110, so that the evaporation efficiency and the service life of the equipment are avoided to be affected; meanwhile, the evaporation speed of the wastewater can be accelerated, the evaporation treatment efficiency is improved, and thus the treatment time is shortened. The scraper 132 is arranged at the edge of the evaporation cylinder 110 close to the stirring frame 134, the scale on the inner wall of the evaporation cylinder 110 can be cleaned by the scraper 132 when the rotating rod 121, the stirring plate 133 and the stirring frame 134 are driven to rotate by the driving piece 122; and the scraper 132 is arranged obliquely, so that the cleaned scale is more easily fallen off from the scraper 132. The evaporated steam enters the condensing pipe 312 in the condensing box 311 through the steam outlet pipe 221, the feed electromagnetic valve 235 is closed, the feed electromagnetic valve 234 and the circulating electromagnetic valve 223 are opened, and the low-temperature wastewater in the storage cylinder 210 is guided into the condensing box 311 by the feed pump 233, so that the steam in the condensing pipe 312 is condensed, and the condensed wastewater reenters the storage cylinder 210 through the circulating pipe 222, so that the steam heat is recycled.

[0061] In the description provided herein, a large number of specific details are explained. However, it can be understood that the embodiments of the present application can be practiced without these specific details. Similarly, in order to simplify the present application and help understand one or more of the various aspects of the present application, in the above description of the exemplary embodiments of the present application, various features of the embodiments of the present application are sometimes grouped together in a single embodiment, figure or description thereof. Among them, the claims of the specific embodiment are hereby expressly incorporated into the specific embodiment, wherein each claim itself is a separate embodiment of the present application.

[0062] It should be noted that the above embodiments illustrate the present application rather than limit the present application, and alternative embodiments can be designed by those skilled in the art without departing from the scope of the appended claims. In the claims, any reference signs located between parentheses shall not be construed as limiting the claims. The word comprising does not exclude the presence of elements or steps not listed in the claims. The word a or an preceding an element does not exclude the presence of a plurality of such elements. The application can be implemented by means of both hardware and software, and the present application can be implemented by means of a suitably programmed computer. In a unit claim enumerating several means, the several means can be embodied by one and the same item of hardware. The use of the words first, second and third, etc. do not imply any ordering. These words can be understood as names. The steps of those embodiments in the foregoing description do not have to be performed in the exact order described, unless otherwise specified.

Claims

1. A comprehensive treatment system for domestic wastewater, characterized by, The application relates to a device for evaporating and recovering liquid, which comprises an evaporating device, a storage device, and a recovery device connected to the evaporating device and the storage device respectively. The evaporating device comprises: an evaporating cylinder with a heating element inside; a driving mechanism with a rotating rod inside the evaporating cylinder and a driving element below the evaporating cylinder, the bottom end of the rotating rod penetrating the bottom wall of the evaporating cylinder and being connected to the output end of the driving element; a stirring mechanism with a stirring assembly arranged along the radial direction of the rotating rod and a scraper arranged at the edge of the stirring assembly, the scraper being capable of abutting the inner wall of the evaporating cylinder; the storage device comprises a storage cylinder, a reflux pipeline and a feeding pipeline, both ends of the reflux pipeline and the feeding pipeline being connected to the storage cylinder and the evaporating cylinder respectively, and the reflux pipeline being arranged above the feeding pipeline; the recovery device comprises a condenser and a collection tank connected to the bottom of the condenser, and the condenser is also connected to the reflux pipeline and the feeding pipeline respectively.

2. The domestic wastewater integrated treatment system according to claim 1, characterized in that, The top end of the evaporating cylinder is provided with a connecting hole, and the evaporating device further comprises a sealing cover plate matched with the connecting hole, the top of the sealing cover plate is provided with a handle, and the heating element is fixed to the bottom of the sealing cover plate.

3. The domestic wastewater integrated treatment system according to claim 2, characterized in that, The center of the bottom of the sealing cover plate is further provided with a limiting sleeve matched with the top end of the rotating rod. The heating element is a plurality of, and the plurality of heating elements are arranged outside the limiting sleeve along the circumferential direction of the sealing cover plate.

4. The domestic wastewater integrated treatment system according to claim 3, characterized in that, The stirring assembly comprises a stirring plate and a stirring frame arranged on the side wall of the rotating rod respectively, the scraper is arranged at the edge of the stirring frame, the stirring plate is located on the inner side of the stirring frame, and the plurality of heating elements are arranged in the gaps between the stirring frame and the stirring plate respectively.

5. The domestic wastewater integrated treatment system according to claim 4, characterized in that, The stirring frame comprises a frame body and a plurality of stirring blades arranged in the frame body, and the plurality of stirring blades are uniformly distributed along the axial direction of the rotating rod.

6. The domestic wastewater integrated treatment system according to any one of claims 1-5, characterized in that, The side wall of the evaporating cylinder is provided with a plurality of cleaning windows, and the plurality of cleaning windows are close to the bottom wall of the evaporating cylinder respectively.

7. The domestic wastewater integrated treatment system according to claim 1, characterized in that, The reflux pipeline comprises a steam outlet pipe, a circulating pipe and a circulating electromagnetic valve, both ends of the steam outlet pipe are connected to the evaporating cylinder and the condenser respectively, one end of the circulating pipe is connected to the condenser, and the other end of the circulating pipe is connected to the storage cylinder through the circulating electromagnetic valve.

8. The domestic wastewater integrated treatment system according to claim 7, characterized in that, The feeding pipeline comprises a feeding pipe, a material inlet pipe, a feeding pump, a feeding electromagnetic valve and a material inlet electromagnetic valve, one end of the feeding pipe is connected to the storage cylinder, the other end of the feeding pipe is connected to the condenser through the feeding pump and the feeding electromagnetic valve, one end of the material inlet pipe is connected to the condenser, and the other end of the material inlet pipe is connected to the evaporating cylinder through the material inlet electromagnetic valve.

9. The domestic wastewater integrated treatment system according to claim 8, characterized in that, The condenser comprises a condensing tank, a condensing pipe arranged in the condensing tank, and a condensing water outlet pipe, the top end of the condensing pipe is connected to the steam outlet pipe, and the bottom end of the condensing pipe is connected to the collection tank through the condensing water outlet pipe.

10. The domestic wastewater integrated treatment system according to claim 9, characterized in that, The condensing pipe is a spiral condensing pipe.

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