Evaporation system and method of use

Abstract

The present invention belongs to the technical field of evaporation, and relates to an evaporation system and a method of use. The evaporation system in the present invention includes an evaporator, on which a negative pressure pump is arranged, and a filter assembly, a scraper and a fixed cylinder are arranged in the evaporator; the fixed cylinder is coaxially fixed in the evaporator, and the fixed cylinder has a hollow structure, and a feed port is opened on one side of the fixed cylinder; one end of the fixed cylinder extends to the outside of the evaporator and is connected to a discharge mechanism; the filter assembly includes a frame and a flexible filter; the flexible filter and the frame form a drying chamber for accommodating solid substances; a first drive assembly for driving the two ends of the flexible filter to separate is arranged on the inner wall of the evaporator; a second drive assembly for driving the friction roller to rotate is arranged in the evaporator; and the scraper is fixed at one end of the frame away from the fixed cylinder. The system can automatically and timely complete the scraping, drying and discharge of solid substances during evaporation, which is conducive to improving the evaporation efficiency.

Description

Technical Field

[0001] The invention belongs to the technical field of evaporation, and relates to an evaporation system and a use method. Background Art

[0002] Evaporation is a commonly used solid-liquid separation technology, which is used to separate solid products from solutions. Negative pressure evaporation is an efficient and energy-saving evaporation technology. Under negative pressure conditions, the boiling point of the solution is reduced, so that the evaporation process can be carried out at a lower temperature, thereby improving the evaporation efficiency.

[0003] However, during the negative pressure evaporation process, the evaporated solid matter will remain at the bottom of the evaporator. Since the evaporator is in a closed state, it is inconvenient to clean the solid matter at the bottom of the evaporator in time, which causes the solid matter to accumulate at the bottom of the evaporator, reducing the heat transfer efficiency and thus affecting the evaporation efficiency.

[0004] In order to solve the above problems, the present invention provides an evaporation system and a use method thereof. Summary of the invention

[0005] In order to solve the problems existing in the background technology, the present invention proposes an evaporation system and a use method thereof.

[0006] In order to achieve the above-mentioned object, the technical solution adopted by the present invention is as follows: an evaporation system, comprising an evaporator, on which a negative pressure pump is arranged, wherein a filter assembly, a scraper and a fixed cylinder are arranged in the evaporator; the fixed cylinder is coaxially fixed in the evaporator, the fixed cylinder has a hollow structure, and a feed port is opened on one side of the fixed cylinder; one end of the fixed cylinder extends to the outside of the evaporator and is connected to a discharge mechanism;

[0007] The filter assembly includes a frame and a flexible filter; one end of the frame is rotatably connected to the fixed cylinder, and a limit slider is elastically slidably installed on the end of the frame close to the fixed cylinder, a smooth roller is rotatably installed on the limit slider, and a friction roller is rotatably installed on the other end of the frame, and the flexible filter is transmission-connected between the friction roller and the smooth roller; the two ends of the flexible filter are elastically connected; a drying chamber for accommodating solid substances is formed between the flexible filter and the frame; a first driving component for driving the two ends of the flexible filter to separate is arranged on the inner wall of the evaporator; a second driving component for driving the friction roller to rotate is arranged in the evaporator; a scraper is fixed on the end of the frame away from the fixed cylinder.

[0008] Furthermore, the first driving component includes a first arc-shaped magnet and a second arc-shaped magnet; the limiting slider is fixedly connected to a slide rod, the slide rod is made of iron material, the first arc-shaped magnet and the second arc-shaped magnet are both fixed in the evaporator and are arranged on both sides of the evaporator, and the first arc-shaped magnet and the second arc-shaped magnet are both matched with the slide rod; as the frame rotates, when the first arc-shaped magnet or the second arc-shaped magnet cooperates with the slide rod, the slide rod moves, the smooth roller moves outward, and the two ends of the flexible filter are separated.

[0009] Furthermore, the second driving assembly comprises a friction wheel, which is coaxially rotatably connected to the friction roller, and a plurality of arc blocks for driving the friction wheel to rotate are arranged at intervals on the inner wall of the evaporator.

[0010] Furthermore, a waste heat box is fixedly installed at the bottom of the evaporator, and high-temperature flue gas is introduced into the waste heat box to heat the evaporator.

[0011] Furthermore, the discharge mechanism includes an auger, a fixed column and an annular plate; the auger is rotatably arranged in the fixed cylinder, a feeding port is provided at the lower part of one end of the fixed cylinder extending outside the evaporator, the fixed column is fixed on the outer wall of the evaporator, the annular plate is rotatably sleeved on the fixed column, a material containing cavity is provided on the rotating surface of the annular plate, and the lower part of the fixed cylinder is in sealing and sliding contact with the annular plate; when the material containing cavity is connected with the feeding port, the solid matter in the fixed cylinder falls into the material containing cavity through the feeding port.

[0012] Furthermore, a push plate is slidably arranged in the material containing chamber, and a second spring is fixedly connected between the push plate and the bottom wall of the material containing chamber. Under the action of the second spring, the push plate is located at one end of the material containing chamber away from the fixed column; an installation groove is provided on the rotating surface of the fixed column, and a magnet is provided in the installation groove to move the push plate into the material containing chamber.

[0013] Furthermore, baffles are fixedly connected to both sides of the blanking opening on the fixed cylinder, and the baffles are sealingly and slidingly matched with the rotating surface of the annular plate.

[0014] Furthermore, a second motor is fixedly mounted on the outer wall of the evaporator, a gear is coaxially fixedly connected to the motor shaft of the second motor, an end gear is coaxially fixedly connected to the annular plate, and the end gear is meshed with the gear.

[0015] Furthermore, a first motor is fixedly mounted on the evaporator, the first motor is drivingly connected to the auger, and the first motor is drivingly connected to the frame.

[0016] A method for using an evaporation system in the present invention comprises the following steps:

[0017] S1, injecting the solution into the evaporator, heating the inside of the evaporator, and starting the negative pressure pump to keep the inside of the evaporator in a negative pressure state;

[0018] S2. As the solution in the evaporator evaporates, the solid matter remains at the bottom of the evaporator;

[0019] S3, rotating the frame, and when passing through the bottom of the evaporator, the scraper scrapes off the solid matter at the bottom of the evaporator, and the scraped off solid matter remains on the scraper;

[0020] S4. Afterwards, as the frame rotates, under the action of the first driving assembly, the two ends of the flexible filter screen separate, and the end of the scraper away from the flexible filter screen tilts upward, the solid matter on the scraper slides into the drying chamber, and then the flexible filter screen closes;

[0021] S5. As the frame rotates, under the action of the second driving assembly, the friction roller rotates, causing the flexible filter to move, so that the solid matter is dispersed in the drying chamber;

[0022] S6. When one end of the frame close to the fixed cylinder is matched with the feed port, under the action of the first driving assembly, the two ends of the flexible filter are separated, and the solid matter in the drying chamber slides into the fixed cylinder;

[0023] S7. The solid matter in the fixed cylinder is discharged through the discharge mechanism.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] 1. When the frame rotates, the scraper scrapes off the solid matter at the bottom of the evaporator, which is beneficial for the heat inside the waste heat box to enter the evaporator and improve the evaporation efficiency of the solution. Then, as the frame rotates, the two ends of the flexible filter separate, and the solid matter on the scraper slides into the drying chamber.

[0026] 2. Under the action of the second driving component, the flexible filter moves to prevent the solid matter in the drying chamber from accumulating at one end under the action of gravity, so that the solid matter is spread flat in the drying chamber, which is conducive to the evaporation of water in the solid matter and accelerates the drying of the solid matter.

[0027] 3. As the frame rotates, the two ends of the flexible filter screen separate again, allowing the solid matter in the drying chamber to enter the fixed cylinder and be discharged from the evaporator under the action of the discharge mechanism.

[0028] 4. The system can automatically and timely scrape, dry and discharge solid matter during evaporation, which is beneficial to improve evaporation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the external structure of the present invention;

[0030] Figure 2 is a cross-sectional view of the present invention in a first direction;

[0031] Figure 3 is a cross-sectional view of the present invention in the second direction;

[0032] Figure 4 It is a schematic diagram of the internal structure of the evaporator in the present invention;

[0033] Figure 5 It is a schematic diagram of the connection of three filter screen components in the present invention;

[0034] Figure 6 It is a schematic diagram of the connection between the scraper and the frame in the present invention;

[0035] Figure 7 It is a schematic diagram of the structure of the flexible filter screen in the present invention;

[0036] Figure 8 It is a schematic diagram of the connection between the two ends of the flexible filter screen in the present invention;

[0037] Fig. 9 is a schematic diagram of the installation of the second motor in the present invention;

[0038] Fig.10 is a cross-sectional view of the annular plate in the present invention;

[0039] Fig.11 is a partial cross-sectional view of the fixed cylinder in the present invention;

[0040] Fig.12 It is a schematic diagram of the state of the flexible filter screen when the slide bar contacts the first arc-shaped magnet in the present invention;

[0041] Fig.13 is a cross-sectional view of the flexible filter screen when the slide bar contacts the first arc-shaped magnet in the present invention;

[0042] Fig.14 It is a schematic diagram of the cooperation between the scraper and the filter assembly in the present invention;

[0043] Fig.15 It is a state diagram of the filter assembly when the slide rod cooperates with the second arc block in the present invention;

[0044] Fig.16 is a cross-sectional view of the flexible filter screen when the slide rod cooperates with the second arc-shaped block in the present invention;

[0045] Fig.17 It is a schematic diagram of the cooperation between the filter assembly and the feed port on the fixed cylinder in the present invention.

[0046] In the figure: 1, evaporator; 2, waste heat box; 3, liquid inlet pipe; 4, negative pressure pump; 5, first motor; 6, frame; 7, scraper; 8, friction roller; 9, friction wheel; 10, smooth roller; 11, limit slider; 12, slide bar; 13, first slide groove; 14, second slide groove; 15, first spring; 16, flexible filter; 17, magnet column; 18, elastic rope; 19, first arc magnet; 20, second arc magnet; 21, first An arc block; 22, a second arc block; 23, a third arc block; 24, a fourth arc block; 25, a fixed cylinder; 26, a guide plate; 27, a auger; 28, a material drop port; 29, a baffle; 30, a fixed column; 31, an annular plate; 32, a material holding cavity; 33, a push plate; 34, a second spring; 35, a through hole; 36, a vent hole; 37, a magnet; 38, an end gear; 39, a fixed plate; 40, a second motor; 41, a gear. DETAILED DESCRIPTION

[0047] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0048] like Figure 1-Figure 17 As shown, the technical solution adopted by the present invention is as follows: an evaporation system, including an evaporator 1, the evaporator 1 is cylindrical and the axis of the evaporator 1 is arranged horizontally. A liquid inlet pipe 3 is installed on one side of the lower part of the evaporator 1, and the solution enters the evaporator 1 through the liquid inlet pipe 3. A negative pressure pump 4 is arranged on the upper part of the evaporator 1, and the gas in the evaporator 1 is extracted by the negative pressure pump 4 to keep the evaporator 1 in a negative pressure state. Since the boiling point of water becomes lower under the negative pressure state, it is easier for the solution in the evaporator 1 to enter the evaporation state. A waste heat box 2 is arranged at the bottom of the evaporator 1, and an air inlet and an air outlet are opened on the waste heat box 2. The high-temperature flue gas is introduced into the waste heat box 2 to heat the bottom of the evaporator 1 and accelerate the evaporation of the solution.

[0049] The evaporator 1 is provided with a filter assembly, a scraper 7 and a fixing cylinder 25 .

[0050] A mounting ring is coaxially rotatably mounted inside the evaporator 1. Specifically, a first motor 5 is fixedly mounted on the outer wall of the evaporator 1, and the motor shaft of the first motor 5 is coaxially fixedly connected with the mounting ring.

[0051] In this embodiment, there are three filter screen assemblies, all of which are fixedly connected to the mounting ring, and the three filter screen assemblies are evenly distributed along the circumference of the axis of the evaporator 1 .

[0052] Each filter assembly includes a frame 6 and a flexible filter 16. One end of the frame 6 is fixedly connected to the mounting ring. A first slide groove 13 is provided on both sides of the end of the frame 6 close to the axis of the evaporator 1, and a second slide groove 14 is provided on the inner wall of the first slide groove 13, and the second slide groove 14 penetrates the frame 6 outward. A limit slider 11 is slidingly connected in each first slide groove 13. The limit slider 11 is fixedly connected to a slide rod 12. The slide rod 12 is slidably arranged in the second slide groove 14. A first spring 15 is arranged in the first slide groove 13, one end of the first spring 15 is fixedly connected to the limit slider 11, and the other end of the first spring 15 is fixedly connected to the end wall of the first slide groove 13. Under the action of the first spring 15, the limit slider 11 is located at the end of the first slide groove 13 away from the mounting ring.

[0053] Each limiting slider 11 is rotatably connected to a smooth roller 10. Friction rollers 8 are rotatably installed on both sides of the frame 6 at one end away from the axis of the evaporator 1. The flexible filter screen 16 is transmission-arranged between the smooth roller 10 and the friction roller 8. The two ends of the flexible filter screen 16 are elastically connected. Specifically, an elastic rope 18 is fixedly connected between the two ends of the flexible filter screen 16. Both ends of the flexible filter screen 16 are fixedly connected to a magnet column 17, and the two magnet columns 17 are adsorbed and matched, and the two ends of the flexible filter screen 16 are attracted together through the magnet column 17. The flexible filter screen 16 and the frame 6 surround a drying chamber. When the limiting slider 11 slides along the first slide groove 13 toward the direction close to the axis of the evaporator 1, the smooth roller 10 moves away from the friction roller 8, thereby separating the two ends of the flexible filter screen 16.

[0054] The scraper 7 is fixed to one end of the frame 6 away from the mounting ring, and the scraper 7 should be on one side of the transmission direction of the frame 6. The scraper 7 includes an arc portion and a straight portion. One end of the arc portion is fixed to the end of the frame 6, and the other end of the arc portion is fixedly connected to the straight portion. The arc portion is adapted to the inner wall of the evaporator 1 and slidably cooperates with the inner wall of the evaporator 1. One end of the straight portion close to the frame 6 is inclined in the direction close to the axis of the evaporator 1. Guard plates are fixedly connected to both sides of the straight portion.

[0055] After the scraper 7 scrapes off the solid matter at the bottom of the evaporator 1, the solid matter remains on the straight portion. Then, as the frame 6 rotates, the end of the straight portion close to the inner wall of the evaporator 1 gradually tilts upward, and the two ends of the flexible filter 16 separate, and the solid matter on the scraper 7 enters the drying chamber.

[0056] The evaporator 1 is provided with a first drive assembly separated from both ends for driving the flexible filter screen 16. The first drive assembly has two and is symmetrically arranged, and the two first drive assemblies correspond to the two smooth rollers 10 one by one, and the first drive assembly drives the corresponding smooth roller 10 to move in a direction close to the axis of the evaporator 1.

[0057] The first driving assembly includes a first arc-shaped magnet 19 and a second arc-shaped magnet 20. The slide bar 12 is made of iron. The first arc-shaped magnet 19 and the second arc-shaped magnet 20 are both fixed to the end wall of the evaporator 1, and the first arc-shaped magnet 19 and the second arc-shaped magnet 20 are respectively arranged on both sides of the evaporator 1. Figure 3 As shown, the first arc-shaped magnet 19 is located on the lower right side of the axis of the evaporator 1, and the second arc-shaped magnet 20 is located on the upper left side of the axis of the evaporator 1. The specific positions of the first arc-shaped magnet 19 and the second arc-shaped magnet 20 should be reasonably set. When the slide bar 12 contacts the first arc-shaped magnet 19, under the adsorption effect of the first arc-shaped magnet 19, the slide bar 12 moves toward the direction close to the axis of the evaporator 1, and then the smooth roller 10 moves toward the direction close to the axis of the evaporator 1, so that the two ends of the flexible filter screen 16 are separated, and the solid matter on the scraper 7 enters the drying chamber through the two ends of the flexible filter screen 16. When the slide bar 12 contacts and cooperates with the second arc-shaped magnet 20, the two ends of the flexible filter screen 16 are separated, and at this time, the end of the filter screen assembly close to the axis of the evaporator 1 is tilted downward, so that the solid matter in the drying chamber slides into the fixed cylinder 25.

[0058] There are two second drive assemblies which are symmetrically arranged. The two second drive assemblies correspond to the two friction rollers 8 one by one, and the second drive assemblies drive the corresponding friction rollers 8 to rotate. Under the action of the two second drive assemblies, the two friction rollers 8 rotate synchronously.

[0059] Each second driving assembly includes a friction wheel 9 and an arc block. The friction wheel 9 is coaxially fixedly connected with the corresponding friction roller 8. The arc block is fixed on the inner wall of the evaporator 1. When the friction wheel 9 contacts the arc block, the friction wheel 9 rotates, the friction roller 8 rotates, and the friction roller 8 drives the flexible filter 16 to move.

[0060] There are multiple arc blocks, which are respectively a first arc block 21, a second arc block 22, a third arc block 23 and a fourth arc block 24. The first arc block 21, the second arc block 22, the third arc block 23 and the fourth arc block 24 are all fixedly connected to the inner wall of the evaporator 1. The first arc block 21, the third arc block 23 and the fourth arc block 24 are frictionally matched with the friction wheel 9 on the side close to the axis of the evaporator 1, and the second arc block 22 is frictionally matched with the friction wheel 9 on the side away from the axis of the evaporator 1. Figure 3 As shown, the first arc block 21 is located at the lower right side of the evaporator 1 , the second arc block 22 is located at the upper right side of the evaporator 1 , the third arc block 23 is located at the upper left side of the evaporator 1 , and the fourth arc block 24 is located at the lower left side of the evaporator 1 .

[0061] The fixed cylinder 25 is coaxially fixed in the evaporator 1. The fixed cylinder 25 is a hollow structure. A feed port is provided on the fixed cylinder 25, and a guide plate 26 that matches the feed port is fixedly provided on the fixed cylinder 25. The position of the feed port should match the second arc-shaped magnet 20, so that under the action of the second arc-shaped magnet 20, when the two ends of the flexible filter 16 are separated, the solid matter in the drying chamber enters the fixed cylinder 25 through the feed port.

[0062] The first arc-shaped magnet 19, the second arc-shaped magnet 20, the first arc-shaped block 21, the second arc-shaped block 22, the third arc-shaped block 23, the fourth arc-shaped block 24 and the feed port should be arranged in coordination with each other.

[0063] One end of the fixed cylinder 25 extends to the outside of the evaporator 1 and is connected to a discharge mechanism. The discharge mechanism includes an auger 27, a fixed column 30 and an annular plate 31. The auger 27 is rotatably mounted in the fixed cylinder 25 and the first motor 5 is drivingly connected to the auger 27.

[0064] A fixing column 30 is fixedly installed on the outer wall of the evaporator 1, and an annular plate 31 is coaxially rotatably sleeved on the fixing column 30. Specifically, a fixing plate 39 is fixedly connected to the evaporator 1, and a second motor 40 is fixedly installed on the fixing plate 39. A gear 41 is coaxially fixedly connected to the motor shaft of the second motor 40, and an end face gear 38 is coaxially fixedly connected to the end face of the annular plate 31. The end face gear 38 is meshed with the gear 41.

[0065] A plurality of material containing cavities 32 are provided on the rotating surface of the annular plate 31, and the plurality of material containing cavities 32 are evenly distributed along the circumference of the axis of the fixed column 30. A push plate 33 is provided in the material containing cavity 32 for sealing and sliding, and a second spring 34 is provided in the material containing cavity 32, and the second spring 34 is fixedly connected between the push plate 33 and the end wall of the material containing cavity 32. Under the action of the second spring 34, the push plate 33 is located at the end of the material containing cavity 32 away from the fixed column 30. A through hole 35 is provided on the bottom wall of the material containing cavity 32. An arc-shaped mounting groove is provided on the fixed column 30, and an arc-shaped magnet 37 is fixed in the mounting groove. When the through hole 35 is connected with the mounting groove, the push plate 33 corresponds to the magnet 37, and under the adsorption action of the magnet 37, the push plate 33 moves in the direction close to the fixed column 30. A vent hole 36 is provided on one side of the bottom of the material containing cavity 32, so that the push plate 33 can slide smoothly in the material containing cavity 32.

[0066] A material drop opening 28 is provided at one end of the fixed cylinder 25 located outside the evaporator 1. Two baffles 29 are fixed on the evaporator 1. The baffles 29 are sealed and slidably matched with the rotating surface of the annular plate 31. The baffles 29 are provided to prevent the material drop opening 28 from being connected to the outside and to prevent the gas in the evaporator 1 from flowing out through the fixed cylinder 25 and the material drop opening 28. When the material drop opening 28 is connected to the material chamber 32, the solid matter in the fixed cylinder 25 enters the material chamber 32 through the material drop opening 28.

[0067] When the material receiving chamber 32 is connected to the drop opening 28 , the material receiving chamber 32 is connected to the mounting groove through the through hole 35 , so that the second spring 34 moves toward the fixing column 30 under the action of the magnet 37 , so that the solid matter can fall into the material receiving chamber 32 .

[0068] Working principle: Initially, under the action of the first spring 15, the smooth roller 10 is at the end of the first slide 13 away from the mounting ring. The two magnet columns 17 are attracted together. The end of the straight part of the scraper 7 close to the flexible filter 16 is matched with the connection between the two ends of the flexible filter 16. The flexible filter 16 is tensioned and arranged between the friction roller 8 and the smooth roller 10. One of the material cavities 32 is connected to the blanking port 28.

[0069] The solution to be treated is injected into the evaporator 1 through the liquid inlet pipe 3. The high-temperature flue gas is introduced into the waste heat box 2 to heat the bottom of the evaporator 1 to accelerate the evaporation of the solution in the evaporator 1. The negative pressure pump 4 is turned on to extract the gas from the evaporator 1 and keep the evaporator 1 in a negative pressure state, which is conducive to accelerating the evaporation of the solution in the evaporator 1.

[0070] As the solution in the evaporator 1 evaporates, solid matter gradually appears at the bottom of the evaporator 1. The first motor 5 is started, and the frame 6 rotates counterclockwise around the axis of the evaporator 1. When the scraper 7 contacts the bottom of the evaporator 1, the scraper 7 scrapes the solid matter from the bottom of the evaporator 1 and pushes the scraped solid matter to move along with it.

[0071] like Fig.12 , Fig.13 , Fig.14 As shown, with the rotation of the frame 6, the straight part of the scraper 7 gradually changes to a horizontal state. When the slide bar 12 contacts the first arc-shaped magnet 19, under the adsorption of the first arc-shaped magnet 19, the slide bar 12 moves to the end close to the axis of the evaporator 1. Since the friction between the friction roller 8 and the flexible filter screen 16 is large and the friction roller 8 is fixedly connected to the frame 6, the friction between the smooth roller 10 and the flexible filter screen 16 is small, so that the smooth roller 10 rolls away from the friction roller 8, and then the end of the flexible filter screen 16 close to the smooth roller 10 moves to the direction close to the axis of the evaporator 1 and separates from the other end. The end of the flexible filter screen 16 close to the friction roller 8 is stationary, and the elastic rope 18 is stretched. At this time, the straight part of the scraper 7 is in a horizontal state, and the end of the straight part of the scraper 7 close to the flexible filter screen 16 is located between the two ends of the flexible filter screen 16. Since the first arc-shaped magnet 19 has a certain length, as the frame 6 rotates, the slide bar 12 moves along the first arc-shaped magnet 19, so that the two ends of the flexible filter 16 remain separated, and the end of the straight portion of the scraper 7 close to the inner wall of the evaporator 1 gradually tilts upward, and the scraped solid matter falls into the drying chamber along the scraper 7 under the action of its own gravity.

[0072] like Fig.15 As shown, after the slide bar 12 is separated from the first arc-shaped magnet 19, under the action of the first spring 15, the smooth roller 10 moves toward the direction close to the friction roller 8, and the two ends of the flexible filter screen 16 are re-adsorbed together, and the drying chamber is closed. At this time, the frame 6 is still at the lower right of the evaporator 1. Under the action of gravity, the solid matter moves toward the drying chamber close to the friction roller 8. Then, as the frame 6 rotates, the friction wheel 9 contacts the first arc-shaped block 21. Under the action of friction, the friction wheel 9 rotates clockwise, the friction roller 8 rotates clockwise, and the flexible filter screen 16 moves. Then, the solid matter at one end of the drying chamber is transported to the end close to the axis of the evaporator 1, so that the solid matter is spread flat in the drying chamber, and the solid matter is prevented from accumulating at the end of the drying chamber close to the friction roller 8, which is conducive to the evaporation of water in the solid matter in the drying chamber.

[0073] As the frame 6 rotates, after the friction wheel 9 passes over the first arc block 21, the frame 6 enters the upper right side of the evaporator 1 and the friction wheel 9 gradually contacts the second arc block 22. When the frame 6 is at the upper right side of the evaporator 1, the end of the drying chamber close to the axis of the evaporator 1 is tilted downward, so that the solid matter moves to the end close to the axis of the evaporator 1 under the action of gravity. The friction wheel 9 contacts the second arc block 22. Under the action of the second arc block 22, the friction wheel 9 rotates counterclockwise, the friction roller 8 rotates counterclockwise, the flexible filter 16 moves, and the solid matter in the drying chamber moves away from the axis of the evaporator 1, thereby making the solid matter flat in the drying chamber, avoiding the accumulation of the solid matter at one end of the drying chamber, which is conducive to the evaporation of water in the solid matter and drying the solid matter.

[0074] As the frame 6 rotates, after the friction wheel 9 passes over the second arc block 22, the frame 6 enters the upper left side of the evaporator 1, and the friction wheel 9 contacts the third arc block 23. When the frame 6 is at the upper left side of the evaporator 1, the end of the drying chamber close to the axis of the evaporator 1 tilts downward, and the solid matter moves to the end of the drying chamber close to the axis of the evaporator 1 under the action of gravity. Under the action of the third arc block 23, the friction wheel 9 rotates clockwise, the friction roller 8 rotates clockwise, and the flexible filter 16 moves, so that the solid matter moves to the end of the drying chamber close to the friction roller 8, thereby preventing the solid matter from accumulating at one end of the drying chamber.

[0075] If the frame 6 enters the upper left side of the evaporator 1, the moisture content of the solid matter in the drying chamber decreases and the adhesion between the solid matter and the flexible filter screen 16 decreases. The flexible filter screen 16 is difficult to drive the solid matter to move when it moves, so that the solid matter accumulates at one end of the drying chamber close to the axis of the evaporator 1. The flexible filter screen 16 will drive the solid matter to flip when it moves, which is beneficial to the evaporation of moisture in the solid matter and further drying the solid matter.

[0076] like Fig.16, Fig.17 As shown, when the friction wheel 9 passes over the third arc block 23, both ends of the flexible filter screen 16 are in contact with the smooth roller 10, and at this time, the connecting line between the two flexible filter screens 16, the axis of the smooth roller 10, and the axis of the friction roller 8 are on the same plane. Then, as the frame 6 rotates, the slide bar 12 contacts the second arc magnet 20. Under the action of the second arc magnet 20, the slide bar 12 moves toward the end of the second chute 14 close to the axis of the evaporator 1, and the smooth roller 10 moves synchronously, thereby separating the two ends of the flexible filter screen 16, opening the drying chamber, and allowing the solid matter in the drying chamber to slide down and fall into the fixed cylinder 25 through the feed port.

[0077] As the frame 6 rotates, after the slide bar 12 passes over the second arc-shaped magnet 20, the smooth roller 10 moves toward the friction roller 8 under the action of the first spring 15, and the two ends of the flexible filter 16 contact under the action of the elastic rope 18, and the drying chamber is closed. Afterwards, as the frame 6 rotates, the flexible filter 16 smoothly passes over the guide plate 26.

[0078] When the frame 6 enters the lower left side of the evaporator 1, the friction wheel 9 will gradually contact the fourth arc block 24. Under the action of the fourth arc block 24, the friction wheel 9 rotates clockwise, the friction roller 8 rotates clockwise, and the flexible filter 16 moves. After the friction wheel 9 passes over the fourth arc block 24, the connection points at both ends of the flexible filter 16 cooperate with the scraper 7. Then, as the frame 6 rotates, the scraper 7 will contact the bottom of the evaporator 1 again and scrape off the solid matter at the bottom of the evaporator 1.

[0079] The solid matter entering the fixed cylinder 25 moves under the action of the auger 27 and falls into the corresponding material chamber 32 through the drop opening 28. When the solid matter in the material chamber 32 reaches a certain amount, the second motor 40 is started and the annular plate 31 rotates. Fig.10 As shown, the annular plate 31 is rotated clockwise to make the next material cavity 32 match with the blanking opening 28. When the material cavity 32 matches with the blanking opening 28, under the action of the magnet 37, the push plate 33 moves toward the direction close to the fixed column 30, and the blanking opening 28 is connected with the corresponding material cavity 32.

[0080] When the annular plate 31 rotates clockwise, the push plate 33 in the material chamber 32 containing the solid material remains in the material chamber 32 due to the certain length of the magnet 37. When the material chamber 32 moves to the bottom of the fixed column 30, the push plate 33 is separated from the adsorption of the magnet 37, and under the action of the second spring 34, the push plate 33 moves away from the fixed column 30 and pushes out the solid material in the material chamber 32.

[0081] The evaporation system can automatically and timely complete the scraping, drying and discharge of solid matter during the evaporation process, which is beneficial to improving the evaporation efficiency.

[0082] A method for using an evaporation system in the present invention comprises the following steps:

[0083] S1. Inject the solution into the evaporator 1, heat the inside of the evaporator 1, and start the negative pressure pump 4 to keep the inside of the evaporator 1 in a negative pressure state.

[0084] S2. As the solution in the evaporator 1 evaporates, solid matter remains at the bottom of the evaporator 1.

[0085] S3, the frame 6 is rotated, and when passing through the bottom of the evaporator 1, the scraper 7 scrapes off the solid matter at the bottom of the evaporator 1, and the scraped off solid matter remains on the scraper 7.

[0086] S4. Afterwards, as the frame 6 rotates, under the action of the first driving assembly, the two ends of the flexible filter screen 16 separate, and the end of the scraper 7 away from the flexible filter screen 16 tilts upward, the solid matter on the scraper 7 slides into the drying chamber, and then the flexible filter screen 16 closes.

[0087] S5. With the rotation of the frame 6, under the action of the second driving assembly, the friction roller 8 rotates, so that the flexible filter screen 16 moves, so that the solid matter is dispersed in the drying chamber.

[0088] S6. When one end of the frame 6 close to the fixed cylinder 25 is matched with the feed port, under the action of the first driving assembly, the two ends of the flexible filter screen 16 are separated, and the solid matter in the drying chamber slides into the fixed cylinder 25.

[0089] S7. The solid matter in the fixed cylinder 25 is discharged through the discharge mechanism.

[0090] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An evaporation system, comprising an evaporator (1) on which a negative pressure pump (4) is arranged, characterized in that: The evaporator (1) is provided with a filter assembly, a scraper (7) and a fixed cylinder (25); the fixed cylinder (25) is coaxially fixed in the evaporator (1), the fixed cylinder (25) has a hollow structure, and a feed port is provided on one side of the fixed cylinder (25); one end of the fixed cylinder (25) extends to the outside of the evaporator (1) and is connected to a discharge mechanism; The filter assembly comprises a frame (6) and a flexible filter (16); one end of the frame (6) is rotatably connected to a fixed cylinder (25), and a limit slider (11) is elastically slidably mounted on one end of the frame (6) close to the fixed cylinder (25), a smooth roller (10) is rotatably mounted on the limit slider (11), and a friction roller (8) is rotatably mounted on the other end of the frame (6), and the flexible filter (16) is transmission-connected between the friction roller (8) and the smooth roller (10); the two ends of the flexible filter (16) are elastically connected; a drying chamber for accommodating solid matter is formed between the flexible filter (16) and the frame (6); and a plurality of filter elements are provided on the inner wall of the evaporator (1). A first drive assembly having two separate ends for driving the flexible filter screen (16); a second drive assembly for driving the friction roller (8) to rotate is arranged in the evaporator (1); a scraper (7) is fixed to an end of the frame (6) away from the fixed cylinder (25); the scraper (7) is located on one side of the frame (6) in the transmission direction, and the scraper (7) comprises an arc portion and a straight portion; one end of the arc portion is fixed to an end of the frame (6), and the other end of the arc portion is fixedly connected to the straight portion, the arc portion is adapted to the inner wall of the evaporator (1) and slidably cooperates with the inner wall of the evaporator (1), and an end of the straight portion close to the frame (6) is inclined in a direction close to the axis of the evaporator (1); Initially, the straight portion of the scraper (7) is close to one end of the flexible filter screen (16) and is engaged with the connection between the two ends of the flexible filter screen (16). The frame (6) rotates counterclockwise around the axis of the evaporator (1). The scraper (7) scrapes the solid matter from the bottom of the evaporator (1) and pushes the scraped solid matter to move along with it. As the frame (6) rotates, one end of the flexible filter screen (16) close to the smooth roller (10) moves toward the direction close to the axis of the evaporator (1) and separates from the other end, and the end of the straight portion of the scraper (7) close to the inner wall of the evaporator (1) gradually tilts upward, and the scraped solid matter falls into the drying chamber along the scraper (7) under the action of its own gravity, and then the flexible filter screen (16) closes; When the frame (6) is located at the upper left side of the evaporator (1), the friction roller (8) rotates clockwise and the flexible filter screen (16) moves; when one end of the frame (6) close to the fixed cylinder (25) is matched with the feed inlet, both ends of the flexible filter screen (16) are in contact with the smooth roller (10), and the connecting line between the two ends of the flexible filter screen (16), the axis of the smooth roller (10), and the axis of the friction roller (8) are on the same plane, so that the smooth roller (10) moves, the two ends of the flexible filter screen (16) are separated, the drying chamber is opened, and the solid matter in the drying chamber slides down and falls into the fixed cylinder (25) through the feed inlet; When the frame (6) enters the lower left side of the evaporator (1), the friction roller (8) rotates clockwise, and the flexible filter screen (16) moves until the connection points at both ends of the flexible filter screen (16) cooperate with the scraper (7).

2. An evaporation system according to claim 1, characterized in that: The first driving assembly comprises a first arc-shaped magnet (19) and a second arc-shaped magnet (20); the limiting slider (11) is fixedly connected to a slide rod (12), the slide rod (12) is made of an iron material, the first arc-shaped magnet (19) and the second arc-shaped magnet (20) are both fixed in the evaporator (1) and are arranged on both sides of the evaporator (1), and the first arc-shaped magnet (19) and the second arc-shaped magnet (20) are both matched with the slide rod (12); as the frame (6) rotates, when the first arc-shaped magnet (19) or the second arc-shaped magnet (20) is matched with the slide rod (12), the slide rod (12) moves, the smooth roller (10) moves outward, and then the two ends of the flexible filter (16) are separated.

3. An evaporation system according to claim 1, characterized in that: The second driving assembly comprises a friction wheel (9), which is coaxially rotatably connected to the friction roller (8), and a plurality of arc-shaped blocks for driving the friction wheel (9) to rotate are arranged at intervals on the inner wall of the evaporator (1).

4. An evaporation system according to claim 1, characterized in that: A waste heat box (2) is fixedly mounted on the bottom of the evaporator (1), and high-temperature flue gas is introduced into the waste heat box (2) to heat the evaporator (1).

5. An evaporation system according to claim 1, characterized in that: The discharge mechanism comprises an auger (27), a fixed column (30) and an annular plate (31); the auger (27) is rotatably arranged in the fixed cylinder (25); a material drop opening (28) is provided at the lower part of one end of the fixed cylinder (25) extending outside the evaporator (1); the fixed column (30) is fixed on the outer wall of the evaporator (1); the annular plate (31) is rotatably sleeved on the fixed column (30); a material receiving chamber (32) is provided on the rotating surface of the annular plate (31); the lower part of the fixed cylinder (25) and the annular plate (31) are in sealing and sliding contact; when the material receiving chamber (32) is in communication with the material drop opening (28), solid matter in the fixed cylinder (25) drops into the material receiving chamber (32) through the material drop opening (28).

6. An evaporation system according to claim 5, characterized in that: A push plate (33) is slidably arranged in the material containing chamber (32); a second spring (34) is fixedly connected between the push plate (33) and the bottom wall of the material containing chamber (32); under the action of the second spring (34), the push plate (33) is located at one end of the material containing chamber (32) away from the fixed column (30); a mounting groove is provided on the rotating surface of the fixed column (30); a magnet (37) is arranged in the mounting groove for moving the push plate (33) into the material containing chamber (32).

7. An evaporation system according to claim 5, characterized in that: Baffles (29) are fixedly connected to both sides of the upper material drop opening (28) of the fixed cylinder (25), and the baffles (29) are sealingly slidably matched with the rotating surface of the annular plate (31).

8. An evaporation system according to claim 5, characterized in that: A second motor (40) is fixedly mounted on the outer wall of the evaporator (1); a motor shaft of the second motor (40) is coaxially fixedly connected to a gear (41); an end face gear (38) is coaxially fixedly connected to the annular plate (31); and the end face gear (38) is meshed with the gear (41).

9. An evaporation system according to claim 5, characterized in that: A first motor (5) is fixedly mounted on the evaporator (1); the first motor (5) is drivingly connected to the auger (27); and the first motor (5) is drivingly connected to the frame (6).

10. A method for using an evaporation system, using the evaporation system as claimed in claim 1, characterized in that: The following steps are included: S1, injecting the solution into the evaporator (1), heating the interior of the evaporator (1), and starting the negative pressure pump (4) to keep the interior of the evaporator (1) in a negative pressure state; S2, as the solution in the evaporator (1) evaporates, solid matter remains at the bottom of the evaporator (1); S3, rotating the frame (6) so that when passing through the bottom of the evaporator (1), the scraper (7) scrapes off the solid matter at the bottom of the evaporator (1), and the scraped off solid matter remains on the scraper (7); S4. Then, as the frame (6) rotates, under the action of the first driving assembly, the two ends of the flexible filter screen (16) separate, and the end of the scraper (7) facing away from the flexible filter screen (16) tilts upward, and the solid matter on the scraper (7) slides into the drying chamber, and then the flexible filter screen (16) closes; S5. As the frame (6) rotates, under the action of the second driving assembly, the friction roller (8) rotates, causing the flexible filter screen (16) to move, so that the solid matter is dispersed in the drying chamber; S6. When one end of the frame (6) close to the fixed cylinder (25) is matched with the feed port, under the action of the first driving assembly, the two ends of the flexible filter screen (16) are separated, and the solid matter in the drying chamber slides into the fixed cylinder (25); S7. The solid matter in the fixed cylinder (25) is discharged through the discharge mechanism.

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