MVR (mechanical vapor recompression) evaporation system mother liquor purification treatment device

Abstract

The invention relates to the technical field of wastewater treatment, and provides a purification treatment device for mother liquor of an MVR (mechanical vapor recompression) evaporation system, which comprises a liquid storage tank, a first-stage precipitation disc, a purification cylinder, a drainage hopper, a purification assembly, an anti-blocking assembly and a flow equalizing drainage assembly, wherein a bracket is mounted at the top of the liquid storage tank, and an on-off control valve is fixedly mounted on the bracket; two primary precipitation plates are fixedly mounted on the liquid storage tank through bearing frames, a purification barrel is mounted on each bearing frame, the purification barrels are located at the bottoms of the primary precipitation plates, a drainage hopper is fixedly mounted at the bottom of each purification barrel, the drainage hoppers are communicated with the liquid storage tank, a purification assembly is mounted in each purification barrel, and an anti-blocking assembly is mounted in each purification assembly. By means of the technical scheme, the technical problems that in the prior art, in the mother liquor purification process, due to the blocking influence of sediments and suspended solids, filtering is blocked, and even filtering is difficult to keep are solved.

Description

Technical Field

[0001] Embodiments of the present disclosure relate to the technical field of wastewater treatment, and specifically, to a purification treatment device for the mother liquor of an MVR evaporation system. Background Art

[0002] The MVR evaporation system is an efficient evaporation and concentration technology. By means of mechanical compression, the evaporation efficiency of the mother liquor is improved, so as to achieve the efficient treatment and resource utilization of waste liquid. It is widely used in industries such as chemical engineering, pharmaceutical, and food processing. The mother liquor is a concentrated liquid generated during the production process. The mother liquor needs to be purified to reduce environmental pollution and resource waste. And the treatment of the mother liquor is a key link, which involves the effective treatment and recovery of the waste liquid generated during the production process. Traditional mother liquor treatment methods have problems such as low treatment efficiency, high energy consumption, and secondary pollution.

[0003] Since the mother liquor contains high-concentration inorganic salts, organic matters, heavy metals and other pollutants, as well as some solid impurities such as precipitates and suspended matters, if directly discharged or reinjected into the original liquid, it will cause the enrichment of pollutants, resulting in an increase in the boiling point of the wastewater, reducing the evaporation efficiency, and even causing blockage or mechanical wear of key components such as pipelines, control valves, pump bodies, and the heat transfer surface of the evaporator, significantly reducing the service life of the equipment.

[0004] When purifying the mother liquor, especially when purifying solid impurities such as precipitates and suspended matters in the mother liquor, it is often necessary to purify it multiple times to filter out the solid impurities in the mother liquor. However, during the purification process, some precipitates and suspended matters will block the equipment, resulting in the obstruction of purification and affecting the quality of purification. Summary of the Invention

[0005] To overcome the above defects, embodiments of the present disclosure provide a purification treatment device for the mother liquor of an MVR evaporation system, which solves the technical problem in the prior art that during the purification process of the mother liquor, it is affected by the blockage of precipitates and suspended matters, resulting in the obstruction of filtration and difficulty in maintaining uniform filtration.

[0006] The technical solution of the present disclosure is as follows: A purification treatment device for the mother liquor of an MVR evaporation system, comprising a liquid storage tank, a bracket is installed on the top of the liquid storage tank, a on-off control valve is fixedly installed on the bracket, and further comprising: A primary sedimentation tray, two of the primary sedimentation trays are fixedly installed on the liquid storage tank through a carrier frame; A purification cylinder, the purification cylinder is installed on each carrier frame, and the purification cylinder is located at the bottom of the primary sedimentation tray; A drainage hopper, the drainage hopper is fixedly installed at the bottom of each purification cylinder, and the drainage hopper is communicated with the liquid storage tank; Purification components, each of which is installed inside the purification cylinder and is used to purify the mother liquor after passing through the primary sedimentation tray; Anti-blocking components, which are installed inside the purification components and are used to collect and process the impurities blocked on the purification components during the purification process; Flow equalizing and drainage components, each of which is installed on the primary sedimentation tray and is used to convey the mother liquor into the primary sedimentation tray.

[0007] On the basis of the foregoing solution, the purification component includes: Filter cylinders, each of which is coaxially and rotatably installed inside the purification cylinder, and a plurality of small holes for filtration are formed on the filter cylinder; Fixed disks, each of which is coaxially and fixedly installed at one end inside the purification cylinder, and the fixed disk is rotationally and sealingly connected to one end of the filter cylinder; Flow equalizing and filtering parts, each of which is installed inside the purification cylinder and is used to evenly distribute the mother liquor to be filtered on the inner wall of the filter cylinder; Driving and rotating parts, each of which is installed on the purification cylinder and is used to drive the filter cylinder and the flow equalizing and filtering parts to act.

[0008] On the basis of the foregoing solution, the flow equalizing and filtering part includes: Driving rotating shafts, each of which is rotatably installed between the purification cylinder and the fixed disk, and the axis direction of the driving rotating shaft is arranged parallel to the axis direction of the purification cylinder; Spiral plates, which are fixedly installed on the driving rotating shafts, and the spiral plates are adapted to the inner wall of the filter cylinder.

[0009] On the basis of the foregoing solution, the driving and rotating part includes: Inner toothed rings, each of which is fixedly installed at the end of the filter cylinder; Driving gears, each of which is rotatably installed on the fixed disk, and the driving gears are meshed with the inner toothed rings; Driving motors, each of which is fixedly installed on the purification cylinder, and the output end of the driving motor is fixedly connected to the driving gear; Driven gears, each of which is rotatably installed on the fixed disk, and the driven gears are meshed with the inner toothed rings, and the driven gears are fixedly connected to the driving rotating shafts.

[0010] On the basis of the foregoing solution, the anti-blocking component includes: Shovel-shaped flexible scrapers, each of which is fixedly installed between the fixed disk and the purification cylinder through a fixed frame, and the shovel-shaped flexible scrapers are slidably attached to the inner wall of the filter cylinder; Collection hopper, each of the bottoms of the fixed frames is slidably installed with the collection hopper, the collection hopper is detachably connected to the purification cylinder, and the bottom and both sides of the collection hopper are provided with a plurality of through grooves for water control; Backwashing part, the backwashing part is installed on the liquid storage tank and is used for cleaning the filter cylinder.

[0011] On the basis of the foregoing solution, the backwashing part includes: Water passing frame, each of the purification cylinders is fixedly installed with the water passing frame, and the water passing frame is communicated with the purification cylinder; Water supply pipe, each of the water passing frames is communicated with the water supply pipe, the other end of each water supply pipe is communicated with a joint, and a drain control valve is fixedly installed at the part where each water supply pipe is communicated with the joint.

[0012] On the basis of the foregoing solution, a water pump is further included. The water pump is fixedly installed on the liquid storage tank, a water inlet pipe is communicated between the output end of the water pump and the joint, and a drain pipe is communicated between the input end of the water pump and the liquid storage tank.

[0013] On the basis of the foregoing solution, the uniform flow and drainage assembly includes: Top cover, the top of each of the two primary sedimentation trays is provided with the top cover; Diversion plate, the inner top walls of the two top covers are fixedly installed with the diversion plate, and a gap is left between the diversion plate and the top cover; Drainage cylinder, the drainage cylinder is fixedly installed inside each of the two primary sedimentation trays, and a liquid discharge pipe is communicated between the drainage cylinder and the purification cylinder.

[0014] On the basis of the foregoing solution, a plurality of annular protrusions are equidistantly arranged inside the primary sedimentation tray along the axial direction of the primary sedimentation tray.

[0015] On the basis of the foregoing solution, an inner sleeve is further included. The tops of the two top covers are communicated with the inner sleeve, the outer parts of the two inner sleeves are slidably and sealingly sleeved with outer sleeves, and the two outer sleeves are respectively communicated with the on-off control valve; Driving member, each of the tops of the top covers is provided with the driving member, the driving member is fixedly installed on the bracket, and the output end of the driving member is fixedly connected to the top cover.

[0016] The beneficial effects of the embodiments of the present disclosure are as follows: 1. In the present disclosure, the filter cylinder is driven to rotate by the driving part, the driving shaft is synchronously driven to rotate, and the driving shaft drives the spiral plate to rotate, so that the mother liquor is uniformly distributed under the push of the spiral plate, and the centrifugal force is used to accelerate the solid-liquid separation, thereby significantly improving the filtration efficiency.

[0017] 2. In the present disclosure, the filtered solid impurities will adhere to the inner wall of the filter cylinder under the action of centrifugal force. At this time, through the arrangement of the shovel-shaped flexible scraper, the impurities on the inner wall can be effectively scraped off and guided into the collection hopper. The bottom and both sides of the collection hopper are provided with a plurality of through grooves. In this way, after the impurities accumulate in the collection hopper, the mother liquor can be discharged through the through grooves, so that the collection hopper only collects the impurities, effectively reducing the risk of blockage.

[0018] 3. In the present disclosure, the mother liquor is evenly distributed to the edge of the precipitation disk through the top cover shunt disk, thereby avoiding local impact load. The liquid level is controlled in cooperation with the drainage cylinder to achieve impurity stratification precipitation. At the same time, multiple layers of annular protrusions are arranged in the primary precipitation disk to extend the flow path of the mother liquor and form turbulence, promoting the settlement of large particle impurities, thereby ensuring better operation of the filter cylinder.

[0019] 4. In the present disclosure, through the cooperation of the purification component and the anti-blocking component, during the filtration process, not only the filtration efficiency is increased, but also the filtered impurities are collected synchronously, making the filtration effect more uniform. Through the arrangement of the flow equalizing drainage component, the precipitation effect of the primary precipitation disk is further improved, thereby reducing the filtration pressure on the filter cylinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the following will briefly introduce the drawings required for the description of the embodiments of the present disclosure. Obviously, the following drawings are only some exemplary embodiments of the present disclosure. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained according to the content of the exemplary embodiments of the present disclosure and these drawings.

[0021] Figure 1 It is a schematic structural diagram of the whole in the present invention; Figure 2 It is a perspective sectional structural diagram of the present invention; Figure 3 It is a sectional structural diagram of the cooperation of the purification component, the anti-blocking component and the primary precipitation disk in the present invention; Figure 4 It is a sectional structural diagram of the cooperation of the purification component and the anti-blocking component in the present invention; Figure 5 It is a sectional structural diagram of the cooperation of the purification component and the anti-blocking component from another angle in the present invention; Figure 6 It is a sectional structural diagram of the anti-blocking component in the present invention; Figure 7 It is a sectional structural diagram of the flow equalizing drainage component in the present invention; Figure 8 In the present invention Figure 1 It is a partial enlarged structural diagram at A in the present invention.

[0022] In the figure: 1. Liquid storage tank; 2. Bracket; 3. On-off control valve; 4. Primary sedimentation tray; 5. Carrying rack; 6. Purification cylinder; 7. Filter cylinder; 8. Fixed disk; 9. Driving rotating shaft; 10. Spiral plate; 11. Inner gear ring; 12. Driving gear; 13. Driving motor; 14. Driven gear; 15. Shovel-shaped flexible scraper; 16. Fixed frame; 17. Collection hopper; 18. Water passing frame; 19. Water supply pipe; 20. Joint; 21. Drain control valve; 22. Water pump; 23. Water inlet pipe; 24. Drain pipe; 25. Top cover; 26. Diverting disk; 27. Drainage cylinder; 28. Liquid discharge pipe; 29. Inner sleeve; 30. Outer sleeve; 31. Driving part; 32. Annular protrusion; 33. Drainage hopper. Specific embodiments

[0023] The present disclosure will be further described in detail below with reference to the accompanying drawings and embodiments. It can be understood that the specific embodiments described herein are only for explaining the present disclosure, rather than limiting the present disclosure.

[0024] For the sake of simplicity of the drawings, only the parts related to the disclosure are schematically shown in each figure, and they do not represent their actual structures as products. In addition, for the sake of simplicity and easy understanding of the drawings, for parts with the same structure or function in some figures, only one of them is schematically shown, or only one of them is marked. In this article, "one" not only means "only this one", but also means "more than one" situation, and "several" includes "two" and "more than two".

[0025] In this article, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present disclosure can be understood according to specific situations.

[0026] In the present disclosure, unless otherwise clearly specified and limited, the first feature being "above" or "below" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through other features between them. Moreover, the first feature being "above", "over", and "on" the second feature includes that the first feature is directly above and obliquely above the second feature, or only means that the first feature is at a higher horizontal height than the second feature. The first feature being "below", "under", and "beneath" the second feature includes that the first feature is directly below and obliquely below the second feature, or only means that the first feature is at a lower horizontal height than the second feature.

[0027] In the description of this embodiment, the orientation or positional relationship terms such as "upper", "lower", "left", "right", etc. are based on the orientation or positional relationship shown in the drawings. It is only for the convenience of description and simplifying the operation, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present disclosure.

[0028] In addition, in the description of this application, the terms "first", "second", etc. are only used for distinguishing descriptions and cannot be understood as indicating or implying relative importance.

[0029] As Figures 1 to 8 shown, it shows a purification treatment device for the mother liquor of an MVR evaporation system in an embodiment of the present disclosure, including a liquid storage tank 1. A bracket 2 is installed on the top of the liquid storage tank 1, and a on-off control valve 3 is fixedly installed on the bracket 2. It also includes a primary sedimentation pan 4, a purification cylinder 6, a drainage hopper 33, a purification component, an anti-blocking component, and a flow equalizing and drainage component. Two primary sedimentation pans 4 are fixedly installed on the liquid storage tank 1 through a carrier 5. A purification cylinder 6 is installed on each carrier 5. The purification cylinder 6 is located at the bottom of the primary sedimentation pan 4. A drainage hopper 33 is fixedly installed at the bottom of each purification cylinder 6, and the drainage hopper 33 communicates with the liquid storage tank 1. A purification component for purifying the mother liquor after passing through the primary sedimentation pan 4 is installed in each purification cylinder 6. The purification component includes a filter cylinder 7, a fixed disk 8, a uniform filtering part, and a driving and rotating part. A filter cylinder 7 is coaxially rotatably installed inside each purification cylinder 6. A plurality of small holes for filtering are opened on the filter cylinder 7. A fixed disk 8 is coaxially fixedly installed at one end inside each purification cylinder 6. The fixed disk 8 is rotationally and sealingly connected to one end of the filter cylinder 7. A uniform filtering part for evenly distributing the mother liquor to be filtered on the inner wall of the filter cylinder 7 is installed in each purification cylinder 6. A driving and rotating part for driving the filter cylinder 7 and the uniform filtering part to act is installed on each purification cylinder 6.

[0030] Specifically, when purifying the mother liquor, the mother liquor enters one of the primary sedimentation trays 4 under the action of the flow equalizing and drainage assembly through the on-off control valve 3, and the impurities in the mother liquor are preliminarily sedimented and separated. Subsequently, the mother liquor flows into the purification cylinder 6, and filtration begins inside the purification cylinder 6. Through the small holes on the filter cylinder 7, the impurities are intercepted inside the filter cylinder 7. At the same time, the filter cylinder 7 is driven to rotate by the driving part, so that the mother liquor enters the drainage hopper 33 under the action of centrifugal force through the small holes. The fixed disk 8 rotates and is hermetically fitted with the filter cylinder 7, thereby protecting the driving part. The purified mother liquor then flows out through the drainage hopper 33 and finally enters the liquid storage tank 1, completing the entire purification process. During the purification process, the anti-blocking assembly plays a role, ensuring that the filter cylinder 7 will not be blocked due to the accumulation of impurities and guaranteeing the purification efficiency. When the primary sedimentation tray 4 and the purification assembly in use need to be maintained or cleaned, adjust the on-off control valve 3 so that the primary sedimentation tray 4 and the purification assembly on the other side carrier 5 start to work, and then the primary sedimentation tray 4 and the purification assembly that need to be maintained can be maintained and cleaned.

[0031] As described above, such as Figure 4 、 Figure 5 shown, the uniform filtration part includes a driving shaft 9 and a spiral plate 10. A driving shaft 9 is rotatably installed between each purification cylinder 6 and the fixed disk 8. The axis direction of the driving shaft 9 is arranged parallel to the axis direction of the purification cylinder 6. The spiral plate 10 is fixedly installed on the driving shaft 9, and the spiral plate 10 is adapted to the inner wall of the filter cylinder 7.

[0032] Specifically, during the filtration process, when the mother liquor enters the filter cylinder 7 inside the purification cylinder 6, in order to make the contact between the filter cylinder 7 and the mother liquor more uniform, it is necessary to make the mother liquor evenly distributed on the inner wall of the filter cylinder 7. At this time, drive the driving shaft 9 to rotate, and the driving shaft 9 drives the spiral plate 10 to rotate, so that the mother liquor is evenly flowed through the inner wall of the filter cylinder 7 under the push of the spiral plate 10 until the filtration process is completed, effectively enhancing the filtration effect.

[0033] As described above, such as Figure 4 、 Figure 5 shown, the driving part includes an internal gear ring 11, a driving gear 12, a driving motor 13 and a driven gear 14. An internal gear ring 11 is fixedly installed at the end of each filter cylinder 7. A driving gear 12 is rotatably installed on each fixed disk 8. The driving gear 12 meshes with the internal gear ring 11. A driving motor 13 is fixedly installed on each purification cylinder 6. The output end of the driving motor 13 is fixedly connected to the driving gear 12. A driven gear 14 is rotatably installed on each fixed disk 8. The driven gear 14 meshes with the internal gear ring 11, and the driven gear 14 is fixedly connected to the driving shaft 9.

[0034] Specifically, during the filtration process, it is necessary to drive the filter cartridge 7 to rotate. At this time, the drive motor 13 is started, and the drive motor 13 drives the drive gear 12 to rotate. Then, through the meshing transmission of the internal gear ring 11 and the driven gear 14, the filter cartridge 7 and the drive shaft 9 rotate in coordination to ensure the efficiency and stability of the entire filtration process.

[0035] As Figures 4 to 6 shown, the anti-blocking component is installed inside the purification component and is used to collect and process the impurities blocked on the purification component during the purification process. The anti-blocking component includes a shovel-shaped flexible scraper 15, a collection hopper 17, and a backwashing part. A shovel-shaped flexible scraper 15 is fixedly installed between each fixed disk 8 and the purification cylinder 6 through a fixed frame 16. The shovel-shaped flexible scraper 15 is slidably attached to the inner wall of the filter cartridge 7. A collection hopper 17 is slidably installed at the bottom of each fixed frame 16. The collection hopper 17 is detachably connected to the purification cylinder 6. A plurality of water control grooves are provided at the bottom and on both sides of the collection hopper 17. The backwashing part is installed on the liquid storage tank 1 and is used to clean the filter cartridge 7.

[0036] Specifically, as the filter cartridge 7 rotates continuously, during the filtration of the mother liquor, the filtered solid impurities will adhere to the inner wall of the filter cartridge 7 under the action of centrifugal force. At this time, through the setting of the shovel-shaped flexible scraper 15, the impurities on the inner wall are effectively scraped off and guided into the collection hopper 17. A plurality of through grooves are provided at the bottom and on both sides of the collection hopper 17. In this way, after the impurities accumulate in the collection hopper 17, the mother liquor can be discharged through the through grooves, so that the collection hopper 17 only collects the impurities. The collection hopper 17 is preferably sealed and installed on the purification cylinder 6 in the form of a buckle. After the impurities in the collection hopper 17 are full, the collection hopper 17 can be taken out for processing and maintenance. At the same time, in order to ensure the effective filtration of the filter cartridge 7, the backwashing part needs to be rinsed regularly to ensure that the filter cartridge 7 is unblocked and reduce the risk of blockage.

[0037] As described above, as Figure 8 shown, the backwashing part includes a water passing frame 18 and a water supply pipe 19. A water passing frame 18 is fixedly installed on each purification cylinder 6. The water passing frame 18 is communicated with the purification cylinder 6. A water supply pipe 19 is communicated with each water passing frame 18. The other end of each water supply pipe 19 is communicated with a joint 20. A drain control valve 21 is fixedly installed at the part where each water supply pipe 19 is communicated with the joint 20. A water pump 22 is also included. The water pump 22 is fixedly installed on the liquid storage tank 1. A water inlet pipe 23 is communicated between the output end of the water pump 22 and the joint 20. A drain pipe 24 is communicated between the input end of the water pump 22 and the liquid storage tank 1.

[0038] Specifically, when it is necessary to clean the filter cartridge 7, the water pump 22 is started, and the filtered mother liquor in the liquid storage tank 1 is conveyed to the water inlet pipe 23 through the drain pipe 24. The drain control valve 21 is used to control the filtered mother liquor to enter the water supply pipe 19 leading to the filter cartridge 7 to be maintained. The water supply pipe 19 sends the filtered mother liquor into the corresponding water passing frame 18, so as to be evenly sprayed onto the outer wall of the filter cartridge 7. With the rotation of the filter cartridge 7, cleaning is carried out to effectively remove stubborn dirt and ensure the filtering effect.

[0039] As Figure 2 , Figure 7 shown, a flow equalizing and draining assembly is installed on each first-stage sedimentation tray 4 for conveying the mother liquor into the first-stage sedimentation tray 4. The flow equalizing and draining assembly includes a top cover 25, a flow dividing tray 26 and a drain cylinder 27. Top covers 25 are arranged on the tops of the two first-stage sedimentation trays 4. Flow dividing trays 26 are fixedly installed on the inner top walls of the two top covers 25. A gap is left between the flow dividing tray 26 and the top cover 25. Drain cylinders 27 are fixedly installed inside the two first-stage sedimentation trays 4. A liquid discharge pipe 28 is connected between the drain cylinder 27 and the purification cylinder 6. A plurality of annular protrusions 32 are arranged at equal distances along the axial direction of the first-stage sedimentation tray 4 inside the first-stage sedimentation tray 4. An inner sleeve 29 and a driving member 31 are further included. Inner sleeves 29 are communicated with the tops of the two top covers 25. Outer sleeves 30 are slidably and sealingly sleeved outside the two inner sleeves 29. The two outer sleeves 30 are respectively connected with the on-off control valve 3. A driving member 31 is arranged on the top of each top cover 25. The driving member 31 is fixedly installed on the bracket 2. The output end of the driving member 31 is fixedly connected with the top cover 25. The driving member 31 is preferably an electric cylinder.

[0040] Specifically, when the mother liquor enters the first-stage sedimentation tray 4, the mother liquor will first enter the outer sleeve 30 through the on-off control valve 3. The outer sleeve 30 discharges the mother liquor into the top cover 25 through the inner sleeve 29. The mother liquor entering the top cover 25 then enters the edge position inside the first-stage sedimentation tray 4 under the action of the flow dividing tray 26, and then precipitates inside the first-stage sedimentation tray 4. As the mother liquor accumulates continuously, until the mother liquor overflows from the middle position of the first-stage sedimentation tray 4 and enters the drain cylinder 27, the precipitation effect is further optimized by the annular protrusions 32 to ensure the effective separation of impurities and the mother liquor. The precipitated mother liquor enters the purification cylinder 6 through the liquid discharge pipe 28, and then the purification treatment can start. When it is necessary to maintain the first-stage sedimentation tray 4, first, through the on-off control valve 3, the mother liquor is prevented from entering the corresponding first-stage sedimentation tray 4, and then the corresponding driving member 31 is started to drive the corresponding top cover 25 to move. At this time, the inner sleeve 29 moves along the axial position of the outer sleeve 30, so that the top cover 25 is separated from the first-stage sedimentation tray 4, and the impurities inside the first-stage sedimentation tray 4 can be cleaned. When the other first-stage sedimentation tray 4 also needs to be maintained, the above steps are repeated.

[0041] The working principle or usage process of this application is as follows: When purifying the mother liquor, the mother liquor enters one of the outer sleeves 30 through the on-off control valve 3. The outer sleeve 30 discharges the mother liquor into the top cover 25 through the inner sleeve 29. The mother liquor entering the top cover 25 then enters the edge position inside the first-stage precipitation tray 4 under the action of the shunt disk 26, and then precipitates in the first-stage precipitation tray 4. As the mother liquor accumulates continuously, until the mother liquor overflows the middle position of the first-stage precipitation tray 4 and enters the drain pipe 27. The precipitation effect is further optimized by the annular protrusion 32 to ensure the effective separation of impurities and the mother liquor. The precipitated mother liquor enters the purification cylinder 6 through the drain pipe 28 and starts to be filtered in the purification cylinder 6.

[0042] During filtration, the drive motor 13 is started. The drive motor 13 drives the drive gear 12 to rotate, and then through the meshing transmission of the internal gear ring 11 and the driven gear 14, the filter cylinder 7 and the drive shaft 9 rotate in coordination. Through the small holes on the filter cylinder 7, impurities are intercepted inside the filter cylinder 7. At the same time, as the filter cylinder 7 rotates, the mother liquor enters the drain hopper 33 under the action of centrifugal force through the small holes. The fixed disk 8 rotates and is sealingly matched with the filter cylinder 7, and the purified mother liquor flows out through the drain hopper 33 and finally enters the liquid storage tank 1 to complete the entire purification process. During the purification process, as the filter cylinder 7 rotates continuously, during the filtration of the mother liquor, the solid impurities filtered out will adhere to the inner wall of the filter cylinder 7 under the action of centrifugal force. In order to prevent the filter cylinder 7 from being blocked due to impurity accumulation and ensure the purification efficiency.

[0043] At this time, through the setting of the shovel-shaped flexible scraper 15, the impurities on the inner wall are effectively scraped off and guided into the collection hopper 17. The bottom and both sides of the collection hopper 17 are provided with a plurality of through grooves. In this way, after the impurities accumulate in the collection hopper 17, the mother liquor can be discharged through the through grooves, so that the collection hopper 17 only collects impurities. The collection hopper 17 is preferably sealed and installed on the purification cylinder 6 in a snap-fastening form. After the impurities in the collection hopper 17 are full, the collection hopper 17 can be taken out for processing and maintenance. At the same time, the filter cylinder 7 also needs to be cleaned regularly. At this time, the water pump 22 is started, and the filtered mother liquor in the liquid storage tank 1 is transported to the water inlet pipe 23 through the drain pipe 24. The drain control valve 21 controls the filtered mother liquor to enter the water supply pipe 19 leading to the filter cylinder 7 to be maintained. The water supply pipe 19 sends the filtered mother liquor into the corresponding water passing frame 18, so as to be evenly sprayed on the outer wall of the filter cylinder 7 and cleaned as the filter cylinder 7 rotates, effectively removing stubborn dirt and ensuring the filtration effect.

[0044] During the filtering process, when the mother liquor enters the filter cartridge 7 in the purification cylinder 6, in order to make the contact between the filter cartridge 7 and the mother liquor more uniform, it is necessary to evenly distribute the mother liquor on the inner wall of the filter cartridge 7. At this time, the driving shaft 9 is driven to rotate, and the driving shaft 9 drives the spiral plate 10 to rotate, so that the mother liquor is evenly flowed through the inner wall of the filter cartridge 7 under the push of the spiral plate 10 until the filtering process is completed, effectively enhancing the filtering effect, and enabling the entire filter cartridge 7 to participate in the filtering, without causing the filtered impurities to accumulate at one end of the filter cartridge 7, making the process of collecting impurities difficult.

[0045] When the primary sedimentation tray 4 in use needs to be maintained or cleaned, the on-off control valve 3 is adjusted so that the primary sedimentation tray 4 and the filter cartridge 7 on the other side of the carrier 5 start to work, and then the corresponding driving member 31 is started to drive the corresponding top cover 25 to move. At this time, the inner sleeve 29 moves along the axial position of the outer sleeve 30, so that the top cover 25 is separated from the primary sedimentation tray 4, and the impurities in the primary sedimentation tray 4 can be cleaned.

[0046] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present disclosure and not to limit them. Although the present disclosure has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present disclosure can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present disclosure, and they should all be covered within the scope of the claims of the present disclosure.

Claims

1. A purification treatment device for the mother liquor of an MVR evaporation system, comprising a liquid storage tank (1), a bracket (2) is installed on the top of the liquid storage tank (1), and a on-off control valve (3) is fixedly installed on the bracket (2), characterized in that, Further included are: A primary sedimentation tray (4), and two of the primary sedimentation trays (4) are fixedly installed on the liquid storage tank (1) through a carrier frame (5); A purification cylinder (6), and the purification cylinder (6) is installed on each carrier frame (5), and the purification cylinder (6) is located at the bottom of the primary sedimentation tray (4); A purification assembly, and the purification assembly is installed in each purification cylinder (6) and is used for purifying the mother liquor after passing through the primary sedimentation tray (4); An anti-blocking assembly, and the anti-blocking assembly is installed inside the purification assembly and is used for collecting and processing impurities blocked on the purification assembly during the purification process; A flow-equalizing drainage assembly, and the flow-equalizing drainage assembly is installed on each primary sedimentation tray (4) and is used for conveying the mother liquor into the primary sedimentation tray (4).

2. The purification treatment device for the mother liquor of an MVR evaporation system according to claim 1, wherein, The purification assembly includes: A filter cylinder (7), and the filter cylinder (7) is coaxially and rotatably installed inside each purification cylinder (6), and a plurality of small holes for filtration are formed in the filter cylinder (7); A fixed disk (8), and the fixed disk (8) is coaxially and fixedly installed at one end inside each purification cylinder (6), and the fixed disk (8) is rotationally and sealingly connected to one end of the filter cylinder (7); A flow-equalizing filtration part, and the flow-equalizing filtration part is installed in each purification cylinder (6) and is used for evenly distributing the mother liquor to be filtered on the inner wall of the filter cylinder (7); A driving and rotating part, and the driving and rotating part is installed on each purification cylinder (6) and is used for driving the filter cylinder (7) and the flow-equalizing filtration part to act.

3. The purification treatment device for the mother liquor of an MVR evaporation system according to claim 2, characterized in that, The flow-equalizing filtration part includes: A driving rotating shaft (9), and the driving rotating shaft (9) is rotatably installed between each purification cylinder (6) and the fixed disk (8), and the axis direction of the driving rotating shaft (9) is arranged parallel to the axis direction of the purification cylinder (6); A spiral plate (10), and the spiral plate (10) is fixedly installed on the driving rotating shaft (9), and the spiral plate (10) is adapted to the inner wall of the filter cylinder (7).

4. A purification treatment device for the mother liquor of an MVR evaporation system according to claim 3, characterized in that, The driving and rotating part includes: An internal gear ring (11), and the internal gear ring (11) is fixedly installed at the end of each filter cylinder (7); A driving gear (12), and the driving gear (12) is rotatably installed on each fixed disk (8), and the driving gear (12) meshes with the internal gear ring (11); A driving motor (13), and the driving motor (13) is fixedly installed on each purification cylinder (6), and the output end of the driving motor (13) is fixedly connected to the driving gear (12); A driven gear (14), and the driven gear (14) is rotatably installed on each fixed disk (8), and the driven gear (14) meshes with the internal gear ring (11), and the driven gear (14) is fixedly connected to the driving rotating shaft (9).

5. The purification treatment device for the mother liquor of an MVR evaporation system according to claim 4, characterized in that, The anti-blocking assembly includes: A shoveled flexible scraper (15), and the shoveled flexible scraper (15) is fixedly installed between each fixed disk (8) and the purification cylinder (6) through a fixed frame (16), and the shoveled flexible scraper (15) is slidably attached to the inner wall of the filter cylinder (7); Collection hopper (17), the collection hopper (17) is slidably installed at the bottom of each fixed frame (16), the collection hopper (17) is detachably connected to the purification cylinder (6), and a plurality of through grooves for water control are provided at the bottom and on both sides of the collection hopper (17); Backwashing part, the backwashing part is installed on the liquid storage tank (1) and is used for cleaning the filter cylinder (7).

6. The purification treatment device for the mother liquor of the MVR evaporation system according to claim 5, characterized in that, The backwashing part includes: Water passing frame (18), the water passing frame (18) is fixedly installed on each purification cylinder (6), and the water passing frame (18) is communicated with the purification cylinder (6); Water supply pipe (19), the water supply pipe (19) is communicated with each water passing frame (18), the other end of each water supply pipe (19) is communicated with the joint (20), and a drain control valve (21) is fixedly installed at the part where each water supply pipe (19) is communicated with the joint (20).

7. The purification treatment device for the mother liquor of an MVR evaporation system according to claim 6, characterized in that, It further includes a water pump (22), the water pump (22) is fixedly installed on the liquid storage tank (1), a water inlet pipe (23) is communicated between the output end of the water pump (22) and the joint (20), and a drain pipe (24) is communicated between the input end of the water pump (22) and the liquid storage tank (1).

8. The purification treatment device for the mother liquor of an MVR evaporation system according to claim 7, characterized in that, The uniform flow and drainage assembly includes: Top cover (25), the top cover (25) is provided on the top of each of the two primary sedimentation trays (4); Flow splitting plate (26), the flow splitting plate (26) is fixedly installed on the inner top wall of each of the two top covers (25), and a gap is left between the flow splitting plate (26) and the top cover (25); Drainage cylinder (27), the drainage cylinder (27) is fixedly installed inside each of the two primary sedimentation trays (4), and a liquid discharge pipe (28) is communicated between the drainage cylinder (27) and the purification cylinder (6).

9. The purification treatment device for the mother liquor of an MVR evaporation system according to claim 8, wherein A plurality of annular protrusions (32) are equidistantly arranged inside the primary sedimentation tray (4) along the axis direction of the primary sedimentation tray (4).

10. The purification treatment device for the mother liquor of an MVR evaporation system according to claim 9, wherein It further includes an inner sleeve (29), the inner sleeve (29) is communicated with the top of each of the two top covers (25), an outer sleeve (30) is slidably and sealingly sleeved outside each of the two inner sleeves (29), and the two outer sleeves (30) are respectively communicated with the on-off control valve (3); Driving part (31), the driving part (31) is provided on the top of each top cover (25), the driving part (31) is fixedly installed on the bracket (2), and the output end of the driving part (31) is fixedly connected to the top cover (25).

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