MVR evaporator recovery mechanism and method for evaporating high-salinity wastewater

Abstract

The present invention belongs to the technical field of high-salt wastewater treatment, and in particular to an MVR evaporator recovery mechanism and method for evaporating high-salt wastewater, which comprises a base, an evaporation cylinder is fixedly installed on the top of the base, an evaporation chamber is opened inside the evaporation cylinder, and the evaporation chamber is used for evaporation and crystallization of high-salt wastewater. The device can drive two heating parts to rotate slowly, so that multiple heating tubes thereon can fully contact with high-salt wastewater, and can recover the used evaporation. steam The secondary steam generated during heating is recovered, compressed and then heated again; the crystalline particles in the discharged concentrated crystallization material can be filtered and collected through the filtering component, and the cleaning brush can be used to improve the collection efficiency of the crystalline particles by synchronous driving of the rotary evaporation component, which has good use effect, and the concentrated liquid after separation can be returned to the evaporation chamber to ensure that the salt component in the wastewater is fully precipitated.

Description

Technical Field

[0001] The invention relates to the technical field of high-salt wastewater treatment, and in particular to an MVR evaporator recovery mechanism and method for evaporating high-salt wastewater. Background Art

[0002] With the rapid development of the chemical industry, the amount of high-salt wastewater discharged from various fields is increasing, and its impact on the environment is increasing, which has seriously affected the environmental ecology and human health and safety. High-salt wastewater refers to wastewater containing organic matter and at least 3.5% (mass fraction) of total dissolved solids; the salts contained are mainly soluble inorganic salt substances such as Cl-, SO42-, Na+, Ca2+, etc. The promulgation of the Water Pollution Prevention and Control Action Plan has put forward higher requirements for comprehensive control of pollutant emissions, strict control of industrial pollution, and especially high-salt wastewater treatment.

[0003] After searching, the patent with the announcement number CN115406268B discloses a heat recovery device for an MVR evaporator, which has an evaporator body, an outer wall of the evaporator body is provided with an insulation sleeve, a heat conducting plate is fixedly arranged inside the insulation sleeve, a water pipe is spirally arranged inside the insulation sleeve, a water supply tank is fixedly arranged on one side of the evaporator body, a submersible pump is fixedly arranged on one side of the water supply tank, a filter is fixedly connected to the lower end of the submersible pump, a water inlet pipe is fixedly connected to the output end of the submersible pump, the water inlet pipe runs through the water supply tank and is fixedly connected to the water pipe at the top, and a water storage tank is fixedly arranged on the side of the evaporator body away from the water supply tank. In the present invention, the heat energy generated by the evaporator body is absorbed into the insulation sleeve through the heat conducting plate, and the water pipe spirally arranged inside the insulation sleeve allows the cold water in the water pipe to fully absorb heat and then heat it, so as to absorb the heat energy and heat the water, thereby saving resources.

[0004] In the prior art, evaporation crystallization technology is mostly used to treat high-salinity wastewater, which mainly uses heating methods to vaporize part of the solvent in the solution, thereby increasing the salt concentration of the solution and creating conditions for the precipitation of the solute. However, the heating effect of high-salinity wastewater in the prior art is not good enough, the contact between the heater and the high-salinity wastewater is not sufficient, and the residual steam after use is discharged, and the steam recovery effect is not good enough;

[0005] The concentrated crystallized material produced after evaporation is mostly a mixture of solid and liquid, and needs to be separated later. The existing technology is not efficient enough in collecting the crystal particles, and the working effect is low. In addition, the separated liquid may contain unprecipitated high-salt components, which is inconvenient to discharge directly.

[0006] In view of the above problems, the present invention document proposes an MVR evaporator recovery mechanism and method for evaporating high-salinity wastewater. Summary of the invention

[0007] The purpose of the present invention is to solve the shortcomings of the prior art that the heating effect of the steamer on high-salt wastewater is not good enough, the utilization rate of steam is not high enough, and the treatment effect and efficiency of the discharged concentrated crystallized material are not good enough, and an MVR evaporator recovery mechanism and method for evaporating high-salt wastewater are proposed.

[0008] In order to achieve the above object, the present invention adopts the following technical solutions:

[0009] MVR evaporator recovery mechanism for high-salinity wastewater evaporation, including:

[0010] A base, an evaporation cylinder is fixedly installed on the top of the base, an evaporation chamber is opened inside the evaporation cylinder, and the evaporation chamber is used to perform evaporation and crystallization treatment on high-salt wastewater. A feed pipe is fixedly installed on the top of the evaporation cylinder, one end of the feed pipe is connected to the inside of the evaporation chamber, and the feed pipe is used to transport the preheated high-salt wastewater into the evaporation chamber;

[0011] It also includes a vapor-liquid separator, which is fixedly installed on the top of the evaporating cylinder and is used to completely separate the secondary steam from the liquid to ensure the purity of the steam entering the compressor;

[0012] It also includes a steam compressor, which is fixedly installed on one side of the evaporator cylinder, and a steam delivery pipe is fixedly installed on the air inlet of the steam compressor, and the other end of the steam delivery pipe is connected to the steam outlet of the vapor-liquid separator. The steam compressor is used to pressurize and heat the secondary steam, and the steam can be recycled and reused;

[0013] It also includes a condensate tank, which is fixedly installed on one side of the base and is used to collect condensate. A drain pipe is fixedly installed on one side of the condensate tank and is used to facilitate the transportation and reuse of condensate.

[0014] It also includes a material storage box, which is fixedly installed on the top of the base, a discharge pipe is fixedly installed on the bottom of the evaporating cylinder, one side of the discharge pipe is fixedly connected to a material delivery connecting pipe, and the other end of the material delivery connecting pipe is fixedly passed through the top of the material storage box, and the material storage box is used to collect and store the concentrated crystallized material remaining after the evaporation process;

[0015] It also includes a rotary evaporation component, which is used to heat and evaporate high-salinity wastewater;

[0016] The invention also comprises a filtering component, which is used for filtering and collecting the crystal particles in the concentrated crystal material.

[0017] In a possible design, the rotary evaporation component includes a first heating part and a second heating part arranged in an evaporation chamber, a first main air inlet pipe is arranged inside the first heating part, and a second main air inlet pipe is arranged inside the second heating part, two annular connecting pipes are fixedly installed on the outer walls of the first main air inlet pipe and the second main air inlet pipe, a plurality of auxiliary heating pipes are fixedly installed between the two annular connecting pipes, and the plurality of auxiliary heating pipes are connected with the annular connecting pipes at both ends, the first main air inlet pipe and the second main air inlet pipe are connected with the adjacent plurality of auxiliary heating pipes and the annular connecting pipes, the ends of the first main air inlet pipe and the second main air inlet pipe away from each other are sealed and rotated to pass through the two ends of the evaporation tube, the ends of the first main air inlet pipe and the second main air inlet pipe close to each other are fixedly connected by welding, and the first main air inlet pipe and the second main air inlet pipe are not connected with each other, a rotary joint is arranged on one side of the evaporation tube, one end of the first main air inlet pipe is fixedly connected to the rotating part of the rotary joint, one end of the fixed part of the rotary joint is fixedly connected to the air outlet of the steam compressor through a pipeline, and one end of the second main air inlet pipe is connected to an external steam supply pipeline.

[0018] In a possible design, a motor and a reducer are fixedly installed on one end of the evaporator cylinder through a bracket, one end of the output shaft of the motor is fixedly connected to the input shaft of the reducer, and a second synchronous wheel is fixedly installed on one end of the output shaft of the reducer. The outer wall of the first main air intake pipe is sleeved with a first synchronous wheel, and the first synchronous wheel and the second synchronous wheel are connected by a synchronous belt transmission. The motor and the reducer can drive the first heating part and the second heating part to rotate slowly in the evaporation chamber.

[0019] In a possible design, a first fixed annular tube and a second fixed annular tube are provided inside the evaporation chamber, and the first fixed annular tube and the second fixed annular tube are fixedly connected by a plurality of connecting columns, the first main air intake pipe and the second main air intake pipe are respectively sealed and rotatably connected to the first fixed annular tube and the second fixed annular tube, and two through holes are provided at the ends of the first main air intake pipe and the second main air intake pipe close to each other, and the plurality of through holes are matched with the adjacent first fixed annular tube and the second fixed annular tube, and a first steam recovery pipe is fixedly installed on the top of the second fixed annular tube, and the top end of the first steam recovery pipe is fixedly penetrated through the outer wall of the evaporator tube and is connected to the air inlet of the vapor-liquid separator, and the first steam recovery pipe is used to transport the steam used in the second heating part, and condensed water delivery pipes are fixedly installed on the bottoms of the first fixed annular tube and the second fixed annular tube, and one end of the two condensed water delivery pipes is fixedly penetrated through the outer wall of the evaporator tube and is connected to the condensate tank, and the two condensed water delivery pipes are used to transport the condensed water in the first heating part and the second heating part.

[0020] In a possible design, a second steam recovery pipe is fixedly installed on the other air inlet of the vapor-liquid separator, one end of the second steam recovery pipe is fixedly passed through the outer wall of one side of the evaporating cylinder and is connected with the evaporating chamber, the second steam recovery pipe is used to collect and transport the secondary steam evaporated in the evaporating chamber, and a separation liquid water pipe is fixedly installed on the liquid outlet of the vapor-liquid separator, the other end of the separation liquid water pipe is fixedly connected to the condensate tank, and the separation liquid water pipe is used to transport the liquid separated from the secondary steam to the condensate tank.

[0021] In one possible design, the filtration assembly includes a collection box fixedly mounted on one side of a storage box, the interior of the storage box and the interior of the collection box are connected through an opening, a filter plate is fixedly mounted inside the storage box, the filter plate is used to concentrate the crystalline particles in the crystallization material for filtering, the filter plate is stepped, and the lower side of the filter plate extends into the collection box, a storage box is provided inside the collection box, the storage box slides through one side of the collection box, and the collection box is used to collect crystalline particles.

[0022] The transmission gear of the present invention is connected with the transmission gear of the present invention on the one hand, and the transmission gear of the present invention is connected with the transmission gear of the present invention on the other hand, and the transmission gear of the present invention is connected with the transmission gear of the present invention on the other hand.

[0023] In one possible design, a clearing rod is fixedly installed at the bottom of the L-shaped slide, one end of the clearing rod seals and slides through one end of the discharge pipe and extends into the discharge pipe, the outer diameter of the clearing rod is smaller than the inner diameter of the discharge pipe, and the clearing rod can move back and forth inside the discharge pipe, so as to clear the blockage of crystal particles in the discharge pipe.

[0024] In a possible design, a return pipe is fixedly installed on one side of the storage box, and the other end of the return pipe is fixedly passed through the outer wall of the evaporation cylinder and communicated with the evaporation chamber, so as to transport the remaining liquid after filtration again and complete the evaporation process.

[0025] The method for using the MVR evaporator recovery mechanism for evaporating high-salinity wastewater includes the following steps:

[0026] S1. When in use, the user can start the device, wherein the motor can drive the first heating part and the second heating part to rotate slowly in the evaporation chamber through the reducer, and then the user can transport the preheated high-salt wastewater into the evaporation chamber through the feed pipe, and then the user can transport the heating steam into the first heating part through the second main air inlet pipe, and the steam can fill the entire second heating part from the second main air inlet pipe, and the second heating part can fully contact the high-salt wastewater in the evaporation chamber when rotating, so that the high-salt wastewater can be quickly heated and evaporated;

[0027] S2. As evaporation proceeds, the secondary steam generated in the evaporation chamber will enter the vapor-liquid separator through the second steam recovery pipe, and the remaining steam after use in the second heating section will also enter the vapor-liquid separator through the first steam recovery pipe to complete the mixing of the steam. The vapor-liquid separator can separate the liquid from the mixed steam, which can ensure that the steam entering the steam compressor later is pure enough; thereafter, the pure secondary steam will enter the steam compressor to complete compression and heating. The secondary steam after compression and heating will enter the first heating section through the first main air intake pipe, and can heat and evaporate the high-salt wastewater in the evaporation chamber again;

[0028] S3. The condensed water generated during the heating process will be discharged through the first fixed annular pipe and the second fixed annular pipe, and transported to the external condensate tank through the corresponding condensate water delivery pipe, and the liquid separated from the steam in the vapor-liquid separator will also be transported to the condensate tank through the separation liquid water delivery pipe. The condensate tank can complete the collection and storage of the condensed water, and then the condensed water can be discharged through the drain pipe for convenient reuse;

[0029] S4. The concentrated crystal material produced after evaporation will be discharged through the discharge pipe, which is connected to the feed connection pipe. With the cooperation of the corresponding sewage pump, the concentrated crystal material can be collected into the storage box; after the concentrated crystal material enters the storage box, it will pass through the filter plate under the action of gravity. The filter plate can filter the crystal particles contained in the concentrated crystal material, and the crystal particles will fall into the collection box along the filter plate, and finally fall into the storage box to complete the collection; the remaining liquid will be stored at the bottom of the storage box, and the user can transport it back to the evaporation chamber through the return pipe for evaporation and crystallization, which can fully treat the high-salt wastewater;

[0030] S5. When the motor is working, it can drive the connecting gear to rotate through the third synchronous wheel and the fourth synchronous wheel. When the connecting gear rotates, it can drive the gear plate to rotate, and then the reciprocating sliding of the L-shaped slide plate can be realized through the fixed column. One end of the L-shaped slide plate extends into the material storage box through the slide groove, and a cleaning brush is fixedly installed through the connecting bracket. The cleaning brush can move synchronously with the movement of the L-shaped slide plate, and then the crystal particles on the filter plate can be continuously cleaned, which can improve the efficiency of collecting the crystal particles;

[0031] S6. The L-shaped slide plate will also drive the dredging rod to move while continuously moving back and forth. One end of the dredging rod will continuously move back and forth inside the discharge pipe. When crystal blockage occurs inside the discharge pipe, the dredging rod can dredge the blockage, thereby ensuring that the discharge pipe has a better transportation condition for concentrated crystallized materials. Beneficial Effects

[0032] In the present invention, the MVR evaporator recovery mechanism for evaporating high-salt wastewater can slowly drive and rotate the two heating parts through the rotary evaporation component, so that the multiple heating tubes thereon can fully contact with the high-salt wastewater, and the heating and evaporation effect is good. The used steam and the secondary steam generated during heating can be recovered, compressed and heated again, which is conducive to realizing multiple uses of steam and ensuring a high utilization rate of steam.

[0033] In the present invention, the MVR evaporator recovery mechanism for evaporating high-salt wastewater can filter and collect the crystal particles in the discharged concentrated crystal material through the filtering component, and the synchronous driving of the rotary evaporation component can be used to improve the collection efficiency of the crystal particles by using a cleaning brush, which has a good use effect, and can also return the separated concentrated liquid to the evaporation chamber again, so as to ensure that the salt components in the wastewater are fully precipitated;

[0034] In the present invention, the MVR evaporator recovery mechanism for evaporating high-salt wastewater is provided with a dredging rod, which can continuously move in the discharge pipe along with the L-shaped slide plate, and can dredge possible blockages in the discharge pipe, which is beneficial to ensure a good conveying effect of the concentrated crystallized material and is easy to use.

[0035] In the present invention, the equipment can drive the two heating parts to rotate slowly, so that the multiple heating tubes thereon can fully contact the high-salt wastewater, and the heating evaporation effect is good. The used steam and the secondary steam generated during heating can be recovered, compressed and then heated up, ensuring a high utilization rate of the steam. At the same time, the crystalline particles in the discharged concentrated crystallization material can be filtered and collected, and the synchronous driving of the rotary evaporation component can be used to improve the collection efficiency of the crystalline particles with a cleaning brush, so the use effect is good, and the separated concentrated liquid can be returned to the evaporation chamber again, ensuring that the salt component in the wastewater is fully precipitated. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 A three-dimensional structural schematic diagram of the MVR evaporator recovery mechanism for evaporating high-salinity wastewater proposed by the present invention;

[0037] Figure 2 A schematic diagram of the three-dimensional structure of the MVR evaporator recovery mechanism for evaporating high-salinity wastewater proposed by the present invention from another perspective;

[0038] Figure 3 A schematic cross-sectional view of the MVR evaporator recovery mechanism for evaporating high-salinity wastewater proposed in the present invention;

[0039] Figure 4 A schematic diagram of the heating component structure of the MVR evaporator recovery mechanism for evaporating high-salinity wastewater proposed by the present invention;

[0040] Figure 5 A schematic diagram of the cross-sectional structure of the heating part of the MVR evaporator recovery mechanism for evaporating high-salinity wastewater proposed by the present invention;

[0041] Figure 6 A schematic diagram of the connection structure of the gas-liquid separator pipeline of the MVR evaporator recovery mechanism for evaporating high-salinity wastewater proposed by the present invention;

[0042] Figure 7 This is a schematic diagram of the structure of the rotary evaporation component driving part of the MVR evaporator recovery mechanism for evaporating high-salt wastewater proposed by the present invention;

[0043] Figure 8 A schematic diagram of the gear disk connection structure of the MVR evaporator recovery mechanism for evaporating high-salinity wastewater proposed in the present invention;

[0044] Fig. 9 A schematic diagram of the discharge pipe dredging structure of the MVR evaporator recovery mechanism for evaporating high-salinity wastewater proposed by the present invention;

[0045] Fig.10 This is a schematic cross-sectional structural diagram of a storage box of an MVR evaporator recovery mechanism for evaporating high-salinity wastewater proposed in the present invention.

[0046] In the figure: 1, base; 2, evaporation tube; 3, feed pipe; 4, vapor-liquid separator; 5, steam compressor; 6, storage box; 7, condensate tank; 8, drain pipe; 9, evaporation chamber; 10, first heating part; 11, second heating part; 12, first main air inlet pipe; 13, second main air inlet pipe; 14, auxiliary heating pipe; 15, annular connecting pipe; 16, through hole; 17, rotary joint; 18, first fixed annular pipe; 19, second fixed annular pipe; 20, condensate water delivery pipe; 21, first steam recovery pipe; 22, second steam Recovery pipe; 23. Separation liquid water pipe; 24. Steam delivery pipe; 25. First synchronous wheel; 26. Second synchronous wheel; 27. Motor; 28. Reducer; 29. ​​Third synchronous wheel; 30. Fourth synchronous wheel; 31. Connecting gear; 32. Gear plate; 33. Fixed column; 34. L-shaped slide plate; 35. Limiting groove; 36. Slide; 37. Discharge pipe; 38. Feed connection pipe; 39. Clearing rod; 40. Collecting box; 41. Storage box; 42. Filter plate; 43. Connecting bracket; 44. Cleaning brush; 45. Return pipe. DETAILED DESCRIPTION

[0047] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Example 1

[0048] Reference Figure 1-10 The MVR evaporator recovery mechanism includes: a base 1, an evaporation cylinder 2, a vapor-liquid separator 4, a steam compressor 5, a condensate tank 7, a material storage box 6, a rotary evaporation component and a filter component.

[0049] The base 1 is used to support the entire mechanism to ensure its stability. An evaporation cylinder 2 is fixedly installed on the top of the base 1. An evaporation chamber 9 is provided inside the evaporation cylinder 2 for evaporation and crystallization of high-salinity wastewater. A feed pipe 3 is fixedly installed on the top of the evaporation cylinder 2. The feed pipe 3 is connected to the inside of the evaporation chamber 9 and is used to transport the preheated high-salinity wastewater into the evaporation chamber 9.

[0050] The vapor-liquid separator 4 is fixedly mounted on the top of the evaporation cylinder 2, and is used to perform a thorough vapor-liquid separation on the secondary steam, ensuring the purity of the steam entering the steam compressor 5. The steam compressor 5 is fixedly mounted on one side of the evaporation cylinder 2, and is connected to the steam outlet of the vapor-liquid separator 4 through the steam delivery pipe 24, and is used to pressurize and heat the secondary steam, and realize the recovery and reuse of the steam.

[0051] The condensate tank 7 is fixedly mounted on one side of the base 1 for collecting condensate. A drain pipe 8 is fixedly mounted on one side of the condensate tank 7 for convenient transportation and reuse of the condensate.

[0052] The storage box 6 is fixedly installed on the top of the base 1, and a discharge pipe 37 is fixedly installed on the bottom of the evaporating cylinder 2. One side of the discharge pipe 37 is connected to the storage box 6 through a material delivery connecting pipe 38. The storage box 6 is used to collect and store the concentrated crystallized material remaining after the evaporation process.

[0053] The rotary evaporation assembly includes a first heating part 10 and a second heating part 11, which are arranged in the evaporation chamber 9. A first main air inlet pipe 12 is arranged inside the first heating part 10, and a second main air inlet pipe 13 is arranged inside the second heating part 11. The outer walls of the two main air inlet pipes are fixedly installed and connected with two annular connecting pipes 15, and a plurality of auxiliary heating pipes 14 are fixedly installed between the two annular connecting pipes 15, and these auxiliary heating pipes 14 are connected with the annular connecting pipes 15 at both ends. The ends of the first main air inlet pipe 12 and the second main air inlet pipe 13 that are away from each other are sealed and rotated to pass through the two ends of the evaporation tube 2, and are fixedly connected by welding, but they are not connected to each other. One end of the second main air inlet pipe 13 is connected to the external steam supply pipeline, and one end of the first main air inlet pipe 12 is connected to the air outlet of the steam compressor 5 through a rotary joint 17, and one end of the first main air inlet pipe 12 is fixedly connected to the rotating part of the rotary joint 17.

[0054] In order to filter and collect the concentrated crystal material, a collection box 40 is added to one side of the storage box 6. The storage box 6 and the collection box 40 are connected through an opening, so that the filtered crystal particles can smoothly enter the collection box 40. A filter plate 42 is installed inside the storage box 6. The filter plate 42 is stepped, and its lower side extends into the collection box 40. In this way, when the material passes through the filter plate 42, the crystal particles will be filtered and fall into the collection box 40, while the liquid passes through the filter plate 42 and is stored in the storage box 6. A storage box 41 is also provided inside the collection box 40. The storage box 41 slides through one side of the collection box 40 to facilitate the removal of the crystal particles in the collection box 40.

[0055] The present application can be used in the field of high-salt wastewater treatment technology, and can also be used in other fields applicable to the present application. Example 2

[0056] Improvement on the basis of Example 1: MVR evaporator recovery mechanism for evaporating high-salinity wastewater, which is applied to the field of high-salinity wastewater treatment technology;

[0057] refer to Figure 4 , 7In this embodiment, in order to drive the first heating part 10 and the second heating part 11 to rotate slowly in the evaporation chamber 9, a motor 27 and a reducer 28 are fixedly installed at one end of the evaporation tube 2 through a bracket, one end of the output shaft of the motor 27 is fixedly connected to the input shaft of the reducer 28, and one end of the output shaft of the reducer 28 is fixedly installed with a second synchronous wheel 26. The outer wall of the first main air intake pipe 12 is sleeved with a first synchronous wheel 25, and the first synchronous wheel 25 and the second synchronous wheel 26 are connected by a synchronous belt transmission. When the motor 27 is started, the reducer 28 can drive the first main air intake pipe 12 to rotate through the second synchronous wheel 26 and the first synchronous wheel 25, thereby driving the entire rotary evaporation assembly to rotate slowly in the evaporation chamber 9.

[0058] refer to Figure 2 , 4 5. In this embodiment, a first fixed annular tube 18 and a second fixed annular tube 19 are further provided inside the evaporation chamber 9, and the two are fixedly connected by a plurality of connecting columns. The first main air intake pipe 12 and the second main air intake pipe 13 are respectively connected to the first fixed annular tube 18 and the second fixed annular tube 19 in a sealed and rotatable manner. Two through holes 16 are provided at the ends of the first main air intake pipe 12 and the second main air intake pipe 13 that are close to each other. These through holes 16 cooperate with the adjacent first fixed annular tube 18 and the second fixed annular tube 19 to allow steam and condensed water to enter the corresponding first fixed annular tube 18 and the second fixed annular tube 19. A first steam recovery pipe 21 is fixedly installed on the top of the second fixed annular tube 19, and the pipe is used to transport the used steam in the second heating part 11 to the vapor-liquid separator 4. Condensed water delivery pipes 20 are fixedly installed on the bottoms of the first fixed annular tube 18 and the second fixed annular tube 19, and are used to transport the condensed water in the first heating part 10 and the second heating part 11 to the condensation tank 7.

[0059] refer to Figure 6 In this embodiment, a second steam recovery pipe 22 is provided on one side of the vapor-liquid separator 4, one end of which is connected to the interior of the evaporation tube 2, and the other end is connected to the air inlet of the vapor-liquid separator 4. In this way, the secondary steam generated by evaporation in the evaporation chamber 9 can be transported to the vapor-liquid separator 4 through the second steam recovery pipe 22 for vapor-liquid separation, so as to be transported to the steam compressor 5 later. At the same time, a separation liquid water delivery pipe 23 is installed at the liquid outlet of the vapor-liquid separator 4, which delivers the pure liquid separated from the mixed steam to the condensate tank 7, so as to facilitate the reuse of water resources.

[0060] refer to Figure 8 , 10In this embodiment, in order to further improve the filtering efficiency, an automatic cleaning mechanism is added. A gear plate 32 and a connecting gear 31 are installed on one side of the storage box 6, and they are meshed with each other. One end of the connecting gear 31 is connected to the fourth synchronous wheel 30 through a rotating shaft, and the two rotate synchronously, and the fourth synchronous wheel 30 is connected to the third synchronous wheel 29 on the motor 27 through a synchronous belt. In this way, when the motor 27 is started, the gear plate 32 will also rotate. A fixed column 33 is fixed at a position deviating from the center of the circle on one side of the gear plate 32, and a chute 36 is opened on the side wall of the storage box 6, and an L-shaped slide plate 34 is slidably connected in the chute 36. A limiting groove 35 is opened inside the L-shaped slide plate 34, and the fixed column 33 will slide in the limiting groove 35 when the gear plate 32 rotates, thereby driving the L-shaped slide plate 34 to reciprocate in the chute 36. One end of the L-shaped slide plate 34 extends to the inside of the storage box 6, and a connecting bracket 43 is fixed, and a cleaning brush 44 is installed at the bottom of the connecting bracket 43. In this way, when the L-shaped slide plate 34 moves, the cleaning brush 44 will slide on the top of the filter plate 42 to automatically remove the crystal particles thereon, thereby improving the collection efficiency.

[0061] refer to Figure 8 , 9 In this embodiment, in order to solve the problem of possible blockage of the discharge pipe 37, a dredging rod 39 is provided at the bottom of the L-shaped slide plate 34. One end of the dredging rod 39 is sealed and slidably penetrates one end of the discharge pipe 37, and can reciprocate inside the discharge pipe 37. When the L-shaped slide plate 34 moves, the dredging rod 39 also moves accordingly to dredge the crystal particles appearing in the discharge pipe 37.

[0062] refer to Figure 1 In this embodiment, a return pipe 45 is provided on one side of the storage box 6, and the other end of the return pipe 45 is connected to the interior of the evaporation tube 2, so that the remaining liquid after filtration can be transported to the evaporation chamber 9 again through the return pipe 45 for evaporation treatment.

[0063] Furthermore, both the return pipe 45 and the material delivery connecting pipe 38 are provided with a transmission pump body to facilitate the driven delivery of the material.

[0064] The method for using the MVR evaporator recovery mechanism for evaporating high-salinity wastewater includes the following steps:

[0065] S1. When in use, the user can start the device, wherein the motor 27 can drive the first heating part 10 and the second heating part 11 to rotate slowly in the evaporation chamber 9 through the reducer 28, and then the user can transport the preheated high-salt wastewater into the evaporation chamber 9 through the feed pipe 3, and then the user can transport the heating steam into the first heating part 10 through the second main air inlet pipe 13, and the steam can fill the entire second heating part 11 from the second main air inlet pipe 13, and the second heating part 11 can fully contact the high-salt wastewater in the evaporation chamber 9 when rotating, and can quickly heat and evaporate the high-salt wastewater;

[0066] S2. As evaporation proceeds, the secondary steam generated in the evaporation chamber 9 will enter the vapor-liquid separator 4 through the second steam recovery pipe 22, and the remaining steam after use in the second heating part 11 will also enter the vapor-liquid separator 4 through the first steam recovery pipe 21 to complete the mixing of the steam. The vapor-liquid separator 4 can separate the liquid from the mixed steam, which can ensure that the steam entering the steam compressor 5 later is pure enough; thereafter, the pure secondary steam will enter the steam compressor 5 to complete compression and heating. The secondary steam after compression and heating will enter the first heating part 10 through the first main air intake pipe 12, and can heat and evaporate the high-salt wastewater in the evaporation chamber 9 again;

[0067] S3. The condensed water generated during the heating process will be discharged through the first fixed annular pipe 18 and the second fixed annular pipe 19, and transported to the external condensate tank 7 through the corresponding condensate water delivery pipe 20, and the liquid separated from the steam in the vapor-liquid separator 4 will also be transported to the condensate tank 7 through the separation liquid delivery pipe 23. The condensate tank 7 can complete the collection and storage of the condensed water, and then the condensed water can be discharged through the drain pipe 8 for convenient reuse;

[0068] S4. The concentrated crystal material produced after evaporation will be discharged through the discharge pipe 37. The discharge pipe 37 is connected to the feed connection pipe 38. With the cooperation of the corresponding sewage pump, the concentrated crystal material can be collected into the storage box 6; after the concentrated crystal material enters the storage box 6, it will pass through the filter plate 42 under the action of gravity. The filter plate 42 can filter the crystal particles contained in the concentrated crystal material. The crystal particles will fall into the collection box 40 along the filter plate 42, and finally fall into the storage box 41 to complete the collection; the remaining liquid will be stored at the bottom of the storage box 6, and the user can transport it back to the evaporation chamber 9 through the return pipe 45 for evaporation and crystallization, which can fully treat the high-salinity wastewater;

[0069] When S5 and the motor 27 are working, the third synchronous wheel 29 and the fourth synchronous wheel 30 can drive the connecting gear 31 to rotate. When the connecting gear 31 rotates, it can drive the gear plate 32 to rotate, and then the reciprocating sliding of the L-shaped slide plate 34 can be realized through the fixed column 33. One end of the L-shaped slide plate 34 extends into the storage box 6 through the slide groove 36, and a cleaning brush 44 is fixedly installed through the connecting bracket 43. The cleaning brush 44 can move synchronously with the movement of the L-shaped slide plate 34, and then the crystal particles on the filter plate 42 can be continuously cleaned, which can improve the efficiency of collecting the crystal particles.

[0070] S6, the L-shaped slide plate 34 will also drive the dredging rod 39 to move while continuously moving back and forth. One end of the dredging rod 39 will continuously move back and forth inside the discharge pipe 37. When crystal blockage occurs inside the discharge pipe 37, the dredging rod 39 can dredge the blockage, thereby ensuring that the discharge pipe 37 has a better transportation condition for the concentrated crystallized material.

[0071] However, as is well known to those skilled in the art, the working principles and wiring methods of the vapor-liquid separator 4, steam compressor 5, motor 27, reducer 28 and multiple transmission pump bodies are commonplace, and are all conventional means or common knowledge, and will not be elaborated here. Those skilled in the art can make any optional selections according to their needs or convenience.

[0072] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. MVR evaporator recovery mechanism for evaporating high-salinity wastewater, characterized in that: include: A base (1), an evaporation cylinder (2) is fixedly mounted on the top of the base (1), an evaporation chamber (9) is provided inside the evaporation cylinder (2), the evaporation chamber (9) is used to perform evaporation and crystallization treatment on high-salinity wastewater, a feed pipe (3) is fixedly mounted on the top of the evaporation cylinder (2), one end of the feed pipe (3) is connected to the inside of the evaporation chamber (9), and the feed pipe (3) is used to transport the preheated high-salinity wastewater into the evaporation chamber (9); It also includes a vapor-liquid separator (4), which is fixedly mounted on the top of the evaporating cylinder (2), and is used to perform thorough vapor-liquid separation on the secondary steam, thereby ensuring the purity of the steam entering the compressor; It also comprises a steam compressor (5), the steam compressor (5) being fixedly mounted on one side of the evaporating cylinder (2), a steam delivery pipe (24) being fixedly mounted on the air inlet of the steam compressor (5), the other end of the steam delivery pipe (24) being connected to the steam outlet of the steam-liquid separator (4), the steam compressor (5) being used to pressurize and heat the secondary steam, and the steam can be recovered and reused; It also comprises a condensate tank (7), the condensate tank (7) being fixedly mounted on one side of the base (1), the condensate tank (7) being used to collect condensate, a drain pipe (8) being fixedly mounted on one side of the condensate tank (7), the drain pipe (8) being used to facilitate the transportation and reuse of condensate; It also comprises a material storage box (6), the material storage box (6) being fixedly mounted on the top of the base (1), a discharge pipe (37) being fixedly mounted on the bottom of the evaporation cylinder (2), one side of the discharge pipe (37) being fixedly connected to a material delivery connection pipe (38), the other end of the material delivery connection pipe (38) being fixedly passed through the top of the material storage box (6), and the material storage box (6) being used to collect and store the concentrated crystallized material remaining after the evaporation process; It also includes a rotary evaporation component, which is used to heat and evaporate high-salinity wastewater; It also includes a filtering component, which is used to filter and collect crystal particles in the concentrated crystal material; The rotary evaporation assembly comprises a first heating part (10) and a second heating part (11) which are arranged in an evaporation chamber (9); a first main air intake pipe (12) is arranged inside the first heating part (10); a second main air intake pipe (13) is arranged inside the second heating part (11); two annular connecting pipes (15) are fixedly installed on the outer walls of the first main air intake pipe (12) and the second main air intake pipe (13); a plurality of auxiliary heating pipes (14) are fixedly installed between the two annular connecting pipes (15); the plurality of auxiliary heating pipes (14) are connected to the annular connecting pipes (15) at both ends; the first main air intake pipe (12) and the second main air intake pipe (13) are connected to the plurality of adjacent auxiliary heating pipes (14) and the annular connecting pipes (15); The first main air intake pipe (12) and the second main air intake pipe (13) are connected to each other, and the ends of the first main air intake pipe (12) and the second main air intake pipe (13) that are far away from each other are sealed and rotated to penetrate the two ends of the evaporator tube (2), and the ends of the first main air intake pipe (12) and the second main air intake pipe (13) that are close to each other are fixedly connected by welding, and the first main air intake pipe (12) and the second main air intake pipe (13) are not connected to each other. A rotary joint (17) is provided on one side of the evaporator tube (2), and one end of the first main air intake pipe (12) is fixedly connected to the rotating part of the rotary joint (17), and one end of the fixed part of the rotary joint (17) is fixedly connected to the air outlet of the steam compressor (5) through a pipeline, and one end of the second main air intake pipe (13) is connected to an external steam supply pipeline. A first fixed annular tube (18) and a second fixed annular tube (19) are arranged inside the evaporation chamber (9); the first fixed annular tube (18) and the second fixed annular tube (19) are fixedly connected via a plurality of connecting columns; the first main air intake pipe (12) and the second main air intake pipe (13) are respectively connected to the first fixed annular tube (18) and the second fixed annular tube (19) in a sealed and rotatable manner; two through holes (16) are arranged at one end of the first main air intake pipe (12) and the second main air intake pipe (13) close to each other; the plurality of through holes (16) are matched with the adjacent first fixed annular tube (18) and the second fixed annular tube (19); the top of the second fixed annular tube (19) A first steam recovery pipe (21) is fixedly installed, the top end of the first steam recovery pipe (21) is fixedly passed through the outer wall of the evaporating tube (2) and is connected to the air inlet of the vapor-liquid separator (4), and the first steam recovery pipe (21) is used to transport the steam used in the second heating part (11). Condensate delivery pipes (20) are fixedly installed at the bottom of the first fixed annular pipe (18) and the second fixed annular pipe (19), one end of the two condensate delivery pipes (20) is fixedly passed through the outer wall of the evaporating tube (2) and is connected to the condensate tank (7), and the two condensate delivery pipes (20) are used to transport the condensate in the first heating part (10) and the second heating part (11).

2. The MVR evaporator recovery mechanism for evaporating high-salinity wastewater according to claim 1 is characterized in that: A motor (27) and a reducer (28) are fixedly mounted on one end of the evaporation cylinder (2) via a bracket; one end of the output shaft of the motor (27) is fixedly connected to the input shaft of the reducer (28); a second synchronous wheel (26) is fixedly mounted on one end of the output shaft of the reducer (28); an outer wall of the first main air inlet pipe (12) is sleeved with a first synchronous wheel (25); the first synchronous wheel (25) and the second synchronous wheel (26) are connected via a synchronous belt transmission; the motor (27) and the reducer (28) can drive the first heating part (10) and the second heating part (11) to rotate slowly in the evaporation chamber (9).

3. The MVR evaporator recovery mechanism for evaporating high-salinity wastewater according to claim 2 is characterized in that: A second steam recovery pipe (22) is fixedly mounted on the other air inlet of the vapor-liquid separator (4); one end of the second steam recovery pipe (22) is fixedly passed through the outer wall of one side of the evaporation tube (2) and is connected to the evaporation chamber (9); the second steam recovery pipe (22) is used to collect and transport the secondary steam evaporated in the evaporation chamber (9); a separation liquid water delivery pipe (23) is fixedly mounted on the liquid outlet of the vapor-liquid separator (4); the other end of the separation liquid water delivery pipe (23) is fixedly connected to the condensate tank (7); the separation liquid water delivery pipe (23) is used to transport the liquid separated from the secondary steam to the condensate tank (7).

4. The MVR evaporator recovery mechanism for evaporating high-salinity wastewater according to claim 3 is characterized in that: The filtering assembly comprises a collecting box (40) fixedly mounted on one side of a material storage box (6); the interior of the material storage box (6) and the interior of the collecting box (40) are connected via an opening; a filter plate (42) is fixedly mounted inside the material storage box (6); the filter plate (42) is used to concentrate crystalline particles in the crystallization material for filtering; the filter plate (42) is stepped; the lower side of the filter plate (42) extends into the collecting box (40); a storage box (41) is arranged inside the collecting box (40); the storage box (41) slides through one side of the collecting box (40); the collecting box (40) is used to collect crystalline particles.

5. The MVR evaporator recovery mechanism for evaporating high-salinity wastewater according to claim 4 is characterized in that: A gear plate (32) is rotatably connected to one side of the material storage box (6), the gear plate (32) is meshed with a connecting gear (31), the connecting gear (31) is rotatably connected to one side of the material storage box (6), a fourth synchronous wheel (30) is fixedly mounted on one end of the connecting gear (31) via a rotating shaft, a third synchronous wheel (29) is fixedly mounted on the outer wall of the output shaft of the motor (27), the third synchronous wheel (29) and the fourth synchronous wheel (30) are connected via a synchronous belt transmission, a fixing column (33) is fixedly mounted on one side of the gear plate (32) at a position deviating from the center of the circle, A slide groove (36) is provided on one side of the material storage box (6), and an L-shaped slide plate (34) is slidably connected to the inner wall of the slide groove (36). A limiting groove (35) is provided inside the L-shaped slide plate (34), and the inner wall of the limiting groove (35) is slidably matched with the fixed column (33). One end of the L-shaped slide plate (34) extends to the material storage box (6) and is fixedly installed with a connecting bracket (43). A cleaning brush (44) is fixedly installed at the bottom of the connecting bracket (43), and the cleaning brush (44) is slidably matched with the top of the filter plate (42), so as to improve the collection efficiency of the crystal particles.

6. The MVR evaporator recovery mechanism for evaporating high-salinity wastewater according to claim 5, characterized in that: A dredging rod (39) is fixedly mounted at the bottom of the L-shaped slide plate (34). One end of the dredging rod (39) seals and slides through one end of the discharge pipe (37) and extends into the discharge pipe (37). The outer diameter of the dredging rod (39) is smaller than the inner diameter of the discharge pipe (37). The dredging rod (39) can reciprocate inside the discharge pipe (37) to dredge the blockage of crystal particles in the discharge pipe (37).

7. The MVR evaporator recovery mechanism for evaporating high-salinity wastewater according to claim 6, characterized in that: A return pipe (45) is fixedly mounted on one side of the storage box (6), and the other end of the return pipe (45) is fixedly passed through the outer wall of the evaporation cylinder (2) and communicated with the evaporation chamber (9), so as to transport the remaining liquid after filtration again and complete the evaporation process.

8. The method for using the MVR evaporator recovery mechanism for evaporating high-salinity wastewater according to claim 7, characterized in that: The following steps are involved: S1. When in use, the user can start the device, wherein the motor (27) can drive the first heating part (10) and the second heating part (11) to rotate slowly in the evaporation chamber (9) through the reducer (28), and then the user can transport the preheated high-salinity wastewater into the evaporation chamber (9) through the feed pipe (3), and then the user can transport the heating steam into the first heating part (10) through the second main air inlet pipe (13), and the steam can fill the entire second heating part (11) from the second main air inlet pipe (13), and the second heating part (11) can fully contact the high-salinity wastewater in the evaporation chamber (9) when rotating, so that the high-salinity wastewater can be quickly heated and evaporated; S2. As evaporation proceeds, the secondary steam generated in the evaporation chamber (9) will enter the vapor-liquid separator (4) through the second steam recovery pipe (22), and the remaining steam after use in the second heating section (11) will also enter the vapor-liquid separator (4) through the first steam recovery pipe (21), completing the mixing of the steam. The vapor-liquid separator (4) can separate the liquid from the mixed steam, thereby ensuring that the steam subsequently entering the steam compressor (5) is sufficiently pure. After that, the pure secondary steam will enter the steam compressor (5) to complete compression and heating. The secondary steam after compression and heating will enter the first heating section (10) through the first main air inlet pipe (12), thereby heating and evaporating the high-salinity wastewater in the evaporation chamber (9) again. S3, the condensed water generated during the heating process will be discharged through the first fixed annular tube (18) and the second fixed annular tube (19), and transported to the external condensate tank (7) through the corresponding condensate water delivery pipe (20), and the liquid separated from the steam in the vapor-liquid separator (4) will also be transported to the condensate tank (7) through the separation liquid delivery pipe (23). The condensate tank (7) can complete the collection and storage of the condensed water, and then the condensed water can be discharged through the drain pipe (8) for convenient reuse; S4. The concentrated crystal material produced after evaporation will be discharged through the discharge pipe (37). The discharge pipe (37) is connected to the feed connection pipe (38). With the cooperation of the corresponding sewage pump, the concentrated crystal material can be collected into the storage box (6). After the concentrated crystal material enters the storage box (6), it will pass through the filter plate (42) under the action of gravity. The filter plate (42) can filter the crystal particles contained in the concentrated crystal material. The crystal particles will fall into the collection box (40) along the filter plate (42) and finally fall into the storage box (41) to complete collection. The remaining liquid will be stored at the bottom of the storage box (6). The user can transport it back to the evaporation chamber (9) through the return pipe (45) for evaporation and crystallization, so that the high-salinity wastewater can be fully treated. S5, when the motor (27) is working, it can drive the connecting gear (31) to rotate through the third synchronous wheel (29) and the fourth synchronous wheel (30), and the connecting gear (31) can drive the gear plate (32) to rotate when rotating, and then the L-shaped slide plate (34) can be reciprocated through the fixed column (33), one end of the L-shaped slide plate (34) extends into the material storage box (6) through the slide groove (36), and a cleaning brush (44) is fixedly installed through the connecting bracket (43), and the cleaning brush (44) can move synchronously with the movement of the L-shaped slide plate (34), so as to continuously clean the crystal particles on the filter plate (42), thereby improving the efficiency of collecting the crystal particles; S6. When the L-shaped slide plate (34) continuously moves back and forth, it also drives the dredging rod (39) to move. One end of the dredging rod (39) continuously moves back and forth inside the discharge pipe (37). When crystal blockage occurs inside the discharge pipe (37), the dredging rod (39) can dredge the blockage, thereby ensuring that the discharge pipe (37) can better transport the concentrated crystal material.

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