Efficient MVR evaporation system

Abstract

The invention relates to the technical field of wastewater treatment, in particular to an efficient MVR evaporation system. Comprising a shell and two partition plates, the two partition plates are fixedly connected into the shell, a plurality of heat exchange pipes are fixedly connected between the two partition plates, a control assembly used for feeding and discharging different materials is arranged on the shell, and a cleaning assembly used for cleaning scale is arranged in the shell; the cleaning assembly comprises two sliding plates connected into the shell in a sliding mode, and elastic films with the same number as the heat exchange pipes are fixedly connected between the two sliding plates. The heat exchange tube is isolated through the elastic film, so that the scaling phenomenon occurs on the elastic film, the two sliding plates are driven to move back and forth in the opposite direction, the elastic film is elastically deformed, the attachment state of scale blocks on the elastic film is damaged, meanwhile, the elastic film vibrates, the scale blocks are conveniently separated from the elastic film, disassembly and cleaning are not needed, and the working efficiency is improved. And the cleaning efficiency is greatly improved.

Description

Technical Field

[0001] The present invention relates to the technical field of wastewater treatment, and particularly to an efficient MVR evaporation system. Background Art

[0002] Evaporation crystallization is an effective method for treating high-salt wastewater. The mechanical vapor recompression (MVR) technology is regarded as an internationally leading evaporation crystallization technology because of its advantages of energy conservation, environmental protection, no pollution, and the ability to recover crystal salts. The MVR system only needs to introduce steam as a heat source at the start-up stage. After the secondary steam is generated and the system enters a stable operation state, no additional heat source is required, thus significantly reducing energy consumption and operating costs.

[0003] An evaporator, a steam compressor, a condenser, and a circulation pump are the main components of the MVR system. Among them, the evaporator is the core equipment of the MVR system, which is used to heat high-salt wastewater to evaporate steam. Usually, a falling-film evaporator is adopted, and the wastewater flows in a thin film in the evaporator and can be quickly evaporated after being heated.

[0004] However, during the operation of the existing falling-film evaporator, scale is likely to form at the heating position of the waste liquid in the evaporator, seriously affecting the efficiency and service life of the evaporator. Currently, chemical cleaning or cleaning after disassembly is mainly used, but these methods are not only time-consuming and laborious, with low efficiency, but also have high cleaning costs and may have negative impacts on the environment and equipment. Summary of the Invention

[0005] In order to overcome the above-mentioned disadvantages mentioned in the background art, the present invention provides an efficient MVR evaporation system.

[0006] The technical solution of the present invention is as follows: An efficient MVR evaporation system includes a housing and two partitions. The two partitions are fixedly connected inside the housing. A plurality of heat exchange tubes are fixedly connected between the two partitions. A control component for the inlet and outlet of different materials is arranged on the housing, and a cleaning component for cleaning scale is arranged inside the housing; the cleaning component includes two sliding plates slidably connected inside the housing. The two partitions are located between the two sliding plates. An elastic membrane with the same number as the heat exchange tubes is fixedly connected between the two sliding plates. A plurality of the elastic membranes are located inside adjacent heat exchange tubes, and the elastic membranes are attached to the inner walls of the adjacent heat exchange tubes. A driving component for driving the two sliding plates to move is arranged inside the housing.

[0007] As a further preferred solution, annular cavities with the same number as the heat exchange tubes are arranged on the upper sliding plate. A plurality of the annular cavities are concentrically distributed with adjacent heat exchange tubes, and adjacent two annular cavities are interconnected.

[0008] As a further preferred solution, the height of the outer side wall of the annular cavity is higher than that of its inner side wall, so that the liquid material in the annular cavity overflows into the adjacent heat exchange tubes.

[0009] As a further preferred solution, a material distribution plate is fixedly connected inside the outer shell. The material distribution plate is fixedly connected with a plurality of telescopic sleeves. The telescopic sleeves penetrate through the material distribution plate. Grooves with the same number as the telescopic sleeves are arranged on the upper sliding plate. The grooves are distributed in a staggered manner with the adjacent annular cavities and are communicated with each other. The telescopic sleeves are used to inject liquid material into the adjacent grooves.

[0010] As a further preferred solution, the driving assembly includes a connecting cylinder. The connecting cylinder is fixedly connected to the lower sliding plate. The material distribution plate, the two partition plates and the upper sliding plate are all slidably connected to the connecting cylinder. A first elastic member is arranged between the connecting cylinder and the material distribution plate. The connecting cylinder is fixedly connected with a first clamping block. The upper sliding plate is fixedly connected with a sliding column. The sliding column is slidably connected to the material distribution plate. A second elastic member is arranged between the sliding column and the material distribution plate. The sliding column is fixedly connected with a second clamping block. The outer shell is fixedly connected with a servo motor. The output shaft of the servo motor is fixedly connected with a rotating shaft. The rotating shaft is rotatably and slidably connected to the connecting cylinder. The rotating shaft is fixedly connected with a rotating cylinder. Outer sliding grooves and inner sliding grooves are respectively arranged on the outer side wall and the inner side wall of the rotating cylinder. The first clamping block slides in the inner sliding groove, and the second clamping block slides in the outer sliding groove.

[0011] As a further preferred solution, both the outer sliding groove and the inner sliding groove are formed by splicing a plurality of vertical grooves and a plurality of inclined grooves end to end in a staggered manner, and the inclined grooves of the outer sliding groove and the inclined grooves of the inner sliding groove have opposite inclination directions.

[0012] As a further preferred solution, a material collecting plate is fixedly connected to the bottom inside the outer shell. The material collecting plate is located below all the sliding plates and is used to block the scale blocks falling from the heat exchange tubes.

[0013] As a further preferred solution, a pressing roller is rotatably connected to the rotating shaft. The pressing roller is in contact with the upper side surface of the material collecting plate. The rotating shaft is fixedly connected with circumferentially distributed rotating plates. The rotating plates are located below the material collecting plate.

[0014] As a further preferred solution, the rotating shaft is fixedly connected with a fixing frame. A knocking frame is slidably connected to the fixing frame. A third elastic member is arranged between the knocking frame and the fixing frame. The knocking frame is in contact with the upper side surface of the material collecting plate. A triggering assembly for driving the knocking frame to move is arranged at the bottom inside the outer shell.

[0015] As a further preferred scheme, the trigger assembly includes a trigger block, the trigger block is fixedly connected to the knocking frame, the bottom of the shell is fixedly connected to a fixing ring, the fixing ring is fixedly connected to circumferentially distributed extrusion blocks, and the extrusion blocks are used to drive the knocking frame to slide along the fixed frame through the trigger block.

[0016] Compared with the prior art, the present invention has the following advantages: 1. The present invention isolates the heat exchange tubes through an elastic membrane, so that scaling occurs on the elastic membrane partition, and drives the two sliding plates to move back and forth in opposite directions, causing the elastic membrane to undergo elastic deformation, destroying the adhesion state of the scale blocks on the elastic membrane, and at the same time causing the elastic membrane to vibrate, which is convenient for separating the scale blocks from the elastic membrane, without the need for disassembly and cleaning, thereby greatly improving the cleaning efficiency.

[0017] 2. By distributing the annular cavity concentrically with the adjacent heat exchange tubes and injecting waste liquid into several grooves according to the principle of communicating vessels, the waste liquid overflows from the annular cavity into the heat exchange tubes, ensuring that the waste liquid evenly enters several heat exchange tubes, thereby improving the utilization rate of the heat exchange tubes.

[0018] 3. By placing the scale blocks on the bag material plate, crushing the scale blocks on the bag material plate, and making the bag material plate vibrate, the scale blocks are broken into small pieces and discharged from the liquid outlet pipe driven by clean water, reducing the probability of scale blocks being too large to be discharged or blocking the liquid outlet pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 It is a schematic cross-sectional view of the three-dimensional structure of the housing of the present invention; Figure 3 It is a schematic diagram of the three-dimensional structure of the sliding plate and the elastic membrane of the present invention; Figure 4 It is a three-dimensional structural schematic diagram of the material dividing plate and the telescopic sleeve of the present invention; Figure 5 It is a schematic diagram of the three-dimensional structure of the telescopic sleeve and the groove of the present invention; Figure 6 It is a schematic diagram of the three-dimensional structure of the annular cavity of the present invention; Figure 7 It is a three-dimensional structural schematic diagram of the sliding column and the connecting cylinder of the present invention; Figure 8 It is a schematic diagram of the three-dimensional structure of the first card block and the second card block of the present invention; Figure 9 It is a schematic diagram of the three-dimensional structure of the outer slide groove and the inner slide groove of the present invention; Figure 10 It is a schematic diagram of the three-dimensional structure of the material pocket plate and the pressure roller of the present invention; Figure 11 It is a three-dimensional structural schematic diagram of the fixing frame and the striking frame of the present invention; Figure 12 This is the evaporation system diagram of the present invention.

[0020] In the figure, the markings are: 101 - outer shell, 102 - partition board, 103 - heat exchange tube, 104 - feed chamber, 105 - heat exchange chamber, 106 - discharge chamber, 107 - feed pipe, 108 - liquid outlet pipe, 109 - steam discharge pipe, 110 - ventilation pipe, 111 - sliding plate, 112 - elastic membrane, 201 - annular cavity, 202 - material distribution plate, 203 - telescopic sleeve, 204 - groove, 301 - connecting cylinder, 302 - first elastic member, 303 - first clamping block, 304 - sliding column, 305 - second elastic member, 306 - second clamping block, 307 - servo motor, 308 - rotating shaft, 309 - rotating cylinder, 310 - outer chute, 311 - inner chute, 401 - material receiving plate, 402 - pressing roller, 403 - rotating plate, 404 - fixing frame, 405 - knocking frame, 406 - third elastic member, 407 - triggering block, 408 - fixing ring, 409 - extrusion block. Detailed implementation manners

[0021] To make the above objects, features, and advantages of the present application more obvious and understandable, the present application will be further described in detail below in conjunction with the accompanying drawings and specific implementation manners. Obviously, the described embodiments are part of the embodiments of the present application, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative efforts belong to the scope of protection of the present application.

[0022] The existing falling film evaporator has the following problems during operation: Scaling problem: The waste liquid is prone to scale at the heating position of the evaporator, affecting efficiency and service life. The existing cleaning methods are time-consuming, laborious, costly, and may have negative impacts on the environment and equipment.

[0023] Uneven distribution of waste liquid: When the waste liquid enters the evaporator, due to the uneven distribution of the heat exchange tubes, it is prone to flow preferentially to some areas, resulting in insufficient waste liquid in other areas, causing the dry wall phenomenon, reducing the heat exchange efficiency and exacerbating scaling. Embodiment 1

[0024] This embodiment discloses an efficient MVR evaporation system, as Figures 1 - 4 and Figure 12As shown in the figure, it includes a housing 101 and two partition plates 102. The two partition plates 102 are symmetrically and fixedly connected inside the housing 101. A number of heat exchange tubes 103 are fixedly connected between the two partition plates 102. A control component for the inlet and outlet of different materials is arranged on the housing 101, and a cleaning component for cleaning scale is arranged inside the housing 101. The cleaning component includes two sliding plates 111 slidably connected inside the housing 101. The two partition plates 102 are located between the two sliding plates 111. An elastic membrane 112 with the same number as the heat exchange tubes 103 is fixedly connected between the two sliding plates 111. A number of elastic membranes 112 are located inside the adjacent heat exchange tubes 103, and the elastic membrane 112 is in contact with the inner wall of the adjacent heat exchange tube 103. The material of the elastic membrane 112 is silicone rubber, which has excellent high-temperature resistance, excellent elasticity and airtightness. There is a gap between the partition plate 102 and the adjacent sliding plate 111, and the elastic membrane 112 may be separated from the adjacent heat exchange tube 103 due to aging, thus generating a gap. The above two gaps are interconnected and form a sealed cavity. A pipeline can be opened at the partition plate 102. This pipeline is connected to the gap between the partition plate 102 and the adjacent sliding plate 111, and this pipeline is connected to an external negative pressure device to make the sealed cavity in a negative pressure state. The elastic membrane 112 will closely adhere to the inner wall of the adjacent heat exchange tube 103 (not shown in the figure), improving the evaporation rate of the waste liquid. A driving component for driving the two sliding plates 111 to move is arranged inside the housing 101.

[0025] As Figure 1 and Figure 2 shown in the figure, the control component specifically includes: a feed pipe 107, a liquid discharge pipe 108, a steam discharge pipe 109 and two connecting pipes 110. The feed pipe 107 is fixedly connected to the top of the housing 101. The liquid discharge pipe 108 is fixedly connected to the bottom of the housing 101. The steam discharge pipe 109 is fixedly connected to the lower part of the housing 101. The two connecting pipes 110 are fixedly connected to the middle part of the housing 101. The two partition plates 102 divide the housing 101 into a top feed chamber 104, a middle heat exchange chamber 105 and a bottom discharge chamber 106. The two connecting pipes 110 are respectively located at the top and bottom of the middle heat chamber 105. The feed chamber 104 is communicated with the discharge chamber 106 through a number of heat exchange tubes 103. A number of heat exchange tubes 103 are located inside the heat exchange chamber 105. The feed pipe 107 is communicated with the feed chamber 104 for injecting waste liquid into the feed chamber 104. Both the liquid discharge pipe 108 and the steam discharge pipe 109 are communicated with the discharge chamber 106. The liquid discharge pipe 108 is used for discharging the concentrated liquid, and the steam discharge pipe 109 is used for discharging steam. Both the two connecting pipes 110 are communicated with the heat exchange chamber 105. The upper connecting pipe 110 is used for injecting steam, and the lower connecting pipe 110 is used for discharging condensed water.

[0026] As Figures 3 - 6As shown in the figure, the upper sliding plate 111 is provided with annular cavities 201 having the same number as the heat exchange tubes 103. A number of annular cavities 201 are concentrically distributed with the adjacent heat exchange tubes 103, and two adjacent annular cavities 201 are interconnected. The height of the outer side wall of the annular cavity 201 is higher than that of its inner side wall, so that the liquid material in the annular cavity 201 overflows into the adjacent heat exchange tube 103. A material distribution plate 202 is fixedly connected to the top inside the outer shell 101. The material distribution plate 202 is frustum-shaped, and a number of telescopic sleeves 203 are fixedly connected to the outer edge of the material distribution plate 202 for enabling the waste liquid to flow from the middle of the material distribution plate 202 to the outer edge and then enter the telescopic sleeves 203. The telescopic sleeves 203 penetrate through the material distribution plate 202, and the telescopic ends of the telescopic sleeves 203 slide along with the sliding plate 111. The upper sliding plate 111 is provided with grooves 204 having the same number as the telescopic sleeves 203. The grooves 204 are distributed in a staggered manner with the adjacent annular cavities 201 and are interconnected. The grooves 204 and the annular cavities 201 have the same depth. The bottom of the telescopic sleeve 203 is located in the adjacent groove 204, forming the principle of a communicating vessel, so that the liquid level in the annular cavity 201 rises stably. The telescopic sleeve 203 is used to inject liquid material into the adjacent groove 204.

[0027] The above settings can achieve that the waste liquid in the feed pipe 107 is evenly dispersed and flows towards the edge under the action of the material distribution plate 202, and flows downward along the telescopic sleeve 203 into the corresponding groove 204. The waste liquid in a number of grooves 204 flows into all the annular cavities 201. When all the annular cavities 201 contain waste liquid, at this time, the liquid levels of the waste liquid in all the grooves 204 and all the annular cavities 201 are the same and continue to rise until the liquid level of the waste liquid is higher than the height of the inner side wall of the annular cavity 201. At this time, the waste liquid starts to stably overflow from the annular cavity 201 into the corresponding heat exchange tube 103.

[0028] As Figures 2 - 4 、 Figure 7 and Figure 8 shown in the figure, the driving assembly includes a connecting cylinder 301. The connecting cylinder 301 is fixedly connected to the lower sliding plate 111. The material distribution plate 202, two partition plates 102 and the upper sliding plate 111 are all slidably connected to the connecting cylinder 301. The central axis of the connecting cylinder 301 is the same as the central axis of the sliding plate 111. The connecting cylinder 301 penetrates through the upper sliding plate 111. A first elastic member 302 is arranged between the connecting cylinder 301 and the material distribution plate 202. The first elastic member 302 is a spring and is used to drive the connecting cylinder 301 to reset. The connecting cylinder 301 is fixedly connected with a first clamping block 303. The upper sliding plate 111 is fixedly connected with a sliding column 304. The sliding column 304 is slidably connected to the material distribution plate 202. A second elastic member 305 is arranged between the sliding column 304 and the material distribution plate 202. The second elastic member 305 is a spring and is used to drive the sliding column 304 to reset. The sliding column 304 is fixedly connected with a second clamping block 306.

[0029] AsFigures 2 - 4 and Figures 7 - 9 As shown in Figures 7 - 9 , a servo motor 307 is fixedly connected to the top of the housing 101. The output shaft of the servo motor 307 is fixedly connected to a rotating shaft 308. The central axis of the rotating shaft 308, the central axis of the housing 101, and the central axis of the connecting cylinder 301 coincide. And the rotating shaft 308 is located inside the connecting cylinder 301. The rotating shaft 308 is rotationally and slidably connected to the connecting cylinder 301. The rotating shaft 308 is fixedly connected to a rotating cylinder 309 located in the feeding chamber 104. An outer sliding groove 310 and an inner sliding groove 311 are respectively arranged on the outer side wall and the inner side wall of the rotating cylinder 309. The first clamping block 303 slides in the inner sliding groove 311, and the second clamping block 306 slides in the outer sliding groove 310. Both the outer sliding groove 310 and the inner sliding groove 311 are formed by splicing a plurality of vertical grooves and a plurality of inclined grooves end to end. And the inclined grooves of the outer sliding groove 310 and the inclined grooves of the inner sliding groove 311 have opposite inclination directions. The number of vertical grooves and inclined grooves on the outer sliding groove 310 is the same as the number of vertical grooves and inclined grooves on the inner sliding groove 311, and the heights of the vertical grooves are the same, that is, the vertical grooves of the outer sliding groove 310 and the vertical grooves of the inner sliding groove 311 are in alignment. In the initial state, the second clamping block 306 is located at the bottom of the vertical groove of the outer sliding groove 310, and the first clamping block 303 is located at the top of the vertical groove of the inner sliding groove 311.

[0030] The above settings can achieve that the output shaft of the servo motor 307 drives the rotating shaft 308 to rotate counterclockwise (taking Figure 8 the top view direction as the reference). The rotating shaft 308 drives the rotating cylinder 309 to rotate synchronously, so that the rotating cylinder 309 drives the outer sliding groove 310 and the inner sliding groove 311 to rotate synchronously. The inclined groove of the outer sliding groove 310 slowly squeezes the second clamping block 306 upward, and the inclined groove in the inner sliding groove 311 slowly squeezes the first clamping block 303 downward. The second clamping block 306 drives the upper sliding plate 111 to move upward through the sliding column 304, and the first clamping block 303 drives the lower sliding plate 111 to move downward through the connecting cylinder 301. At the same time, both the first elastic member 302 and the second elastic member 305 are compressed, and the two sliding plates 111 slowly move away from each other, so that the elastic membrane 112 is slowly stretched. When both the first clamping block 303 and the second clamping block 306 move to the corresponding vertical grooves, the first elastic member 302 and the second elastic member 305 quickly drive the two sliding plates 111 to reset toward each other, causing the elastic membrane 112 to vibrate. At this time, the first clamping block 303 and the second clamping block 306 are reset to the initial height again, and so on in a cycle.

[0031] The operation process of this embodiment is as follows: The waste liquid enters the feed cavity 104 through the feed pipe 107, flows downward and contacts the material distribution plate 202, and dispersedly flows along the material distribution plate 202 into a number of telescopic sleeves 203. The waste liquid flows downward along the number of telescopic sleeves 203 into the corresponding grooves 204 on the upper sliding plate 111, and then the waste liquid in the number of grooves 204 flows into the number of annular cavities 201. Thus, until the liquid level height of the waste liquid is higher than the inner side wall height of its annular cavity 201, at this time, the waste liquid in the annular cavity 201 begins to overflow into the heat exchange pipe 103, causing the waste liquid to flow downward in contact with the elastic membrane 112. At the same time, the high-temperature steam enters the heat exchange cavity 105 along the upper connecting pipe 110, releases heat to generate condensed water and is discharged through the lower connecting pipe 110, so that the high-temperature steam in the heat exchange cavity 105 heats the waste liquid flowing along the elastic membrane 112, vaporizes the water in the waste liquid in the heat exchange pipe 103, concentrates and evaporates the waste liquid, and then the concentrated liquid flows into the discharge cavity 106 and is discharged along the liquid discharge pipe 108, and the steam is discharged along the steam discharge pipe 109. Such a cycle is carried out until the evaporation of the waste liquid ends. At this time, the injection of the waste liquid and the high-temperature steam is closed, and the concentrated liquid in the discharge cavity 106 is emptied. When the evaporation treatment of the waste liquid is required again, the above steps are repeated.

[0032] When the waste liquid flows along the heat exchange pipe 103 and evaporates the internal water, some substances in the waste liquid will precipitate and adhere to the elastic membrane 112 to form scale blocks. After the evaporation of the waste liquid ends, it needs to be cleaned regularly. At this time, the servo motor 307 is started. The output shaft of the servo motor 307 drives the outer sliding groove 310 and the inner sliding groove 311 to rotate in the same direction through the rotating shaft 308 and the rotating cylinder 309. The outer sliding groove 310 and the inner sliding groove 311 respectively drive the sliding column 304 and the connecting cylinder 301 to perform reciprocating motions through the second clamping block 306 and the first clamping block 303. And the sliding column 304 and the connecting cylinder 301 first move slowly away from each other, and then quickly move towards each other. Such a cycle is carried out, thereby driving the two sliding plates 111 to move synchronously, causing the number of elastic membranes 112 between the two sliding plates 111 to be pulled. The elastic membrane 112 undergoes tensile deformation under the pulling force, thereby destroying the attachment state of the scale blocks on the elastic membrane 112. Then the two sliding plates 111 quickly reset, and the elastic membrane 112 synchronously and quickly resets to form vibrations. The scale blocks attached to the elastic membrane 112 are separated from each other by the vibration force, causing the scale blocks to fall into the discharge cavity 106. During this period, clean water can be injected into the feed pipe 107 to facilitate the discharge of the cleaned scale blocks along the liquid discharge pipe 108 by means of the flow of the clean water. When the cleaning is completed, the output shaft of the servo motor 307 drives the rotating cylinder 309 to reset to the initial position. Similarly, the two sliding plates 111 reset to the initial position. The servo motor 307 is turned off and the injection of clean water into the feed pipe 107 is stopped. When the cleaning of this device is required again, the above steps are repeated. Embodiment 2

[0033] An efficient MVR evaporation system disclosed in this embodiment, on the basis of Embodiment 1, also has the function of assisting in discharging scale blocks.

[0034] After the scale lumps are cleaned, due to their different sizes, the small scale lumps will be discharged under the drive of the water flow, while the large scale lumps are likely to remain in the evaporator and even block the discharge pipe. This situation not only increases the cleaning difficulty but also may cause equipment failures and affect the normal operation.

[0035] On the basis of Embodiment 1, as Figure 2 and Figure 10 shown, a material holding plate 401 is fixedly connected to the bottom inside the housing 101. The material holding plate 401 is located below all the sliding plates 111 and between the steam discharge pipe 109 and the liquid outlet pipe 108, and is used to block the scale lumps falling from the heat exchange tubes 103. The material holding plate 401 is evenly distributed with through holes. A pressure roller 402 is rotatably connected to the rotating shaft 308. The pressure roller 402 is in contact with the upper side of the material holding plate 401. The pressure roller 402 can rotate around the upper side of the material holding plate 401 under the drive of the rotating shaft 308. Convex blocks can be arranged on the outside of the pressure roller 402 to increase the crushing force on the scale lumps. The rotating shaft 308 is fixedly connected with circumferentially distributed rotating plates 403. The rotating plates 403 are located below the material holding plate 401. The shape of the rotating plates 403 can be freely set, such as rectangular plates and spiral plates. The rotating plates 403 are evenly distributed on the side wall of the rotating shaft 308 and are used to uniformly disturb the water flow.

[0036] The above settings can achieve that when the rotating shaft 308 cleans the scale lumps on the elastic film 112, the rotating shaft 308 drives the pressure roller 402 to rotate to crush the scale lumps located on the material holding plate 401, so that the scale lumps can fall downward through the through holes on the material holding plate 401. The rotating shaft 308 drives the rotating plates 403 to rotate to stir the water flow, so that the water flow drives the scale lumps to rotate synchronously and suspend in the water, reducing the probability of their sinking to the bottom.

[0037] As Figure 2 、 Figure 10 and Figure 11 shown, the rotating shaft 308 is fixedly connected with a fixing frame 404. A knocking frame 405 is slidably connected to the fixing frame 404. A third elastic member 406 is arranged between the knocking frame 405 and the fixing frame 404. The third elastic member 406 is a tension spring and is initially in a stretched state, and is used to drive the knocking frame 405 to impact the material holding plate 401 to make it vibrate. The knocking frame 405 is in contact with the upper side of the material holding plate 401. A trigger assembly for driving the knocking frame 405 to move is arranged at the bottom inside the housing 101. The trigger assembly includes a trigger block 407. The trigger block 407 is fixedly connected to the knocking frame 405. A fixing ring 408 is fixedly connected to the bottom inside the housing 101. The fixing ring 408 is fixedly connected with circumferentially distributed extrusion blocks 409. The extrusion blocks 409 are right-angled triangles, and the long right-angled surfaces of the extrusion blocks 409 are in contact with the fixing ring 408. The extrusion blocks 409 are used to drive the knocking frame 405 to slide along the fixing frame 404 through the trigger block 407.

[0038] The above settings can achieve that the rotating shaft 308 drives the trigger block 407 to rotate through the fixing bracket 404 and the knocking bracket 405. The trigger block 407 rotates and contacts the extrusion block 409, and slides along the inclined surface of the extrusion block 409, causing the knocking bracket 405 to slide upward along the fixing bracket 404. The knocking bracket 405 is separated from the material hopper plate 401, and the third elastic member 406 is further stretched. Thus, until the trigger block 407 is separated from the inclined surface of the extrusion block 409, under the tensile force of the third elastic member 406, the knocking bracket 405 quickly impacts the material hopper plate 401. Such a cycle causes the material hopper plate 401 to generate a vibration force.

[0039] The working process of this embodiment is as follows: Since the scale blocks on the elastic membrane 112 are separated from each other by the vibration force, it is difficult to control the particle size of the scale blocks. There will be a situation where the scale block particles are too large to be discharged along the liquid outlet pipe 108, thus blocking the liquid outlet pipe 108. When the scale blocks fall downward, they will first fall onto the material hopper plate 401. At this time, the rotating shaft 308 will drive the pressure roller 402 to rotate synchronously, so that the pressure roller 402 crushes the scale blocks falling on the material hopper plate 401 into small pieces, which is convenient for falling downward through the through holes on the material hopper plate 401. At the same time, the rotating shaft 308 drives the rotating plate 403 to rotate, stirring the clear water in the discharge cavity 106, so that the clear water drives the scale blocks to rotate synchronously to prevent the scale blocks from depositing.

[0040] When the rotating shaft 308 rotates, the rotating shaft 308 drives the fixing bracket 404 and the knocking bracket 405 thereon to rotate synchronously, so that the knocking bracket 405 drives the trigger block 407 to slide along the fixed ring 408. The trigger block 407 reciprocally contacts the extrusion block 409, and the extrusion block 409 drives the knocking bracket 405 to reciprocally slide along the fixing bracket 404 through the trigger block 407, causing the knocking bracket 405 to knock on the material hopper plate 401. The material hopper plate 401 generates vibration under the knocking, causing the scale blocks on the material hopper plate 401 and in the through holes of the material hopper plate 401 to fall downward under the vibration. The scale blocks are discharged along the liquid outlet pipe 108 driven by the clear water. Thus, until the cleaning of this device ends. When it is necessary to clean this device again, repeat the above steps.

[0041] The above-mentioned is only the preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent replacements or changes, and all should be covered within the protection scope of the present invention.

Claims

1. A high-efficiency MVR evaporation system, comprising a housing (101) and two partitions (102), wherein the two partitions (102) are fixedly connected to the housing (101), a plurality of heat exchange tubes (103) are fixedly connected between the two partitions (102), and a control component for the inflow and outflow of different materials is arranged on the housing (101), characterized in that: A cleaning component for cleaning scale is arranged in the housing (101); The cleaning component comprises two sliding plates (111) slidably connected to the shell (101), the two partitions (102) are located between the two sliding plates (111), and elastic membranes (112) equal in number to the number of the heat exchange tubes (103) are fixedly connected between the two sliding plates (111), a plurality of the elastic membranes (112) are located in adjacent heat exchange tubes (103), and the elastic membranes (112) are in contact with the inner walls of adjacent heat exchange tubes (103), and a driving component for driving the two sliding plates (111) to move is arranged in the shell (101).

2. A high-efficiency MVR evaporation system according to claim 1, characterized in that: The upper sliding plate (111) is provided with annular cavities (201) having the same number as the heat exchange tubes (103), a plurality of the annular cavities (201) are concentrically distributed with adjacent heat exchange tubes (103), and two adjacent annular cavities (201) are interconnected.

3. A high-efficiency MVR evaporation system according to claim 2, characterized in that: The height of the outer wall of the annular cavity (201) is higher than the height of the inner wall thereof, so that the liquid in the annular cavity (201) overflows into the adjacent heat exchange tube (103).

4. A high-efficiency MVR evaporation system according to claim 3, characterized in that: A material dividing plate (202) is fixedly connected inside the outer shell (101), and a plurality of telescopic sleeves (203) are fixedly connected to the material dividing plate (202). The telescopic sleeves (203) penetrate the material dividing plate (202), and the upper sliding plate (111) is provided with grooves (204) having the same number as the telescopic sleeves (203). The grooves (204) are staggeredly distributed with adjacent annular cavities (201) and are interconnected. The telescopic sleeves (203) are used to inject liquid into adjacent grooves (204).

5. A high-efficiency MVR evaporation system according to claim 4, characterized in that: The driving assembly comprises a connecting tube (301), the connecting tube (301) is fixedly connected to the sliding plate (111) below, the material dividing plate (202), the two partitions (102) and the sliding plate (111) above are all slidably connected to the connecting tube (301), a first elastic member (302) is provided between the connecting tube (301) and the material dividing plate (202), the connecting tube (301) is fixedly connected to a first clamping block (303), the sliding plate (111) above is fixedly connected to a sliding column (304), the sliding column (304) is slidably connected to the material dividing plate (202), and the sliding column (304) is slidably connected to the material dividing plate (202). ), the sliding column (304) is fixedly connected to a second clamping block (306), the housing (101) is fixedly connected to a servo motor (307), the output shaft of the servo motor (307) is fixedly connected to a rotating shaft (308), the rotating shaft (308) is rotatably and slidably connected to the connecting cylinder (301), the rotating shaft (308) is fixedly connected to a rotating cylinder (309), the outer side wall and the inner side wall of the rotating cylinder (309) are respectively provided with an outer sliding groove (310) and an inner sliding groove (311), the first clamping block (303) slides in the inner sliding groove (311), and the second clamping block (306) slides in the outer sliding groove (310).

6. A high-efficiency MVR evaporation system according to claim 5, characterized in that: The outer slide groove (310) and the inner slide groove (311) are both formed by a plurality of vertical grooves and a plurality of inclined grooves spliced ​​end to end, and the inclined grooves of the outer slide groove (310) and the inclined grooves of the inner slide groove (311) are inclined in opposite directions.

7. A high-efficiency MVR evaporation system according to claim 6, characterized in that: A material pocket plate (401) is fixedly connected to the bottom of the shell (101), and the material pocket plate (401) is located below all the sliding plates (111) and is used to block scale blocks that fall into the heat exchange tube (103).

8. A high-efficiency MVR evaporation system according to claim 7, characterized in that: The rotating shaft (308) is rotatably connected to a pressure roller (402), the pressure roller (402) is in contact with the upper side surface of the pocket material plate (401), and the rotating shaft (308) is fixedly connected to a circumferentially distributed rotating plate (403), the rotating plate (403) is located below the pocket material plate (401).

9. A high-efficiency MVR evaporation system according to claim 8, characterized in that: The rotating shaft (308) is fixedly connected to a fixing frame (404), the fixing frame (404) is slidably connected to a knocking frame (405), a third elastic member (406) is provided between the knocking frame (405) and the fixing frame (404), the knocking frame (405) is in contact with the upper side surface of the pocket plate (401), and a trigger component for driving the knocking frame (405) to move is provided at the bottom of the housing (101).

10. A high-efficiency MVR evaporation system according to claim 9, characterized in that: The trigger assembly comprises a trigger block (407), the trigger block (407) being fixedly connected to the striking frame (405), a fixing ring (408) being fixedly connected to the bottom of the housing (101), the fixing ring (408) being fixedly connected to circumferentially distributed extrusion blocks (409), the extrusion blocks (409) being used to drive the striking frame (405) to slide along the fixing frame (404) via the trigger block (407).

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