A device for softening high-salt wastewater and reducing hardness by means of a membrane

Abstract

The present invention provides a high-salt wastewater membrane softening and hardness reduction device, which relates to the technical field of wastewater treatment, comprising a water delivery platform, wherein a water inlet pipe is fixed to the top of the outermost end of the water delivery platform, and four groups of evaporation boxes are equidistantly fixed to the other end of the water delivery platform, and an evaporation plate is rotatably installed inside the evaporation box through a bearing, the water delivery platform is connected with the evaporation box at the top of the evaporation plate through a pipeline, and the evaporation box is provided with a push-out assembly at the position of the evaporation plate at the bottom of the evaporation plate, and the push-out assembly comprises an upper scraper and a lower scraper, and the upper scraper and the lower scraper are both embedded in the inner wall of the evaporation box on the side close to the water delivery platform. Compared with the prior art, multiple groups of evaporation boxes and vertical pipes are connected to the tubular membrane assembly to separate the wastewater for evaporation and crystallization, thereby improving the efficiency, and the generated water vapor is filtered by the tubular membrane assembly, and the bottom of the evaporation box and the inside of the vertical pipe can be cleaned in time by the push-out assembly and the cleaning assembly to discharge the precipitate, thereby avoiding affecting the wastewater treatment efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of wastewater treatment, in particular to a high-salt wastewater membrane softening and hardness reduction device. Background Art

[0002] As for the treatment of hardness in high-salt and high-hardness wastewater, the main methods currently used are the double alkali method to convert permanent hardness into temporary hardness, and then recover calcium carbonate through crystallization precipitation, or directly use ion exchange to remove hardness. The above methods are limited by the high operating costs and other issues in the promotion and use of the technology. The high-salt wastewater remaining after hardness removal can be recovered by evaporation crystallization to recover sodium sulfate or sodium carbonate, among which membrane distillation technology has received widespread attention. Membrane distillation is a coupling of membrane separation and traditional distillation processes. It has the characteristics of low operating temperature and pressure, and almost complete interception of non-volatile compounds. It does not require high heat sources for heating. Low-temperature flue gas waste heat, high-temperature condensate water, etc. can be selected from the factory. It can also be combined with solar energy, geothermal energy or low-grade heat sources.

[0003] In the existing technology, the combination of evaporation and tubular membranes can improve the efficiency of wastewater softening and hardness reduction. However, the wastewater and evaporated water vapor transmission pipelines are prone to scale due to high salt content, which has a long-term impact on the wastewater and overall passage efficiency. It also causes certain damage to the tubular membranes, making it inconvenient to clean the inside of the pipelines. Summary of the Invention

[0004] In view of the shortcomings of the existing technology, the purpose of the present invention is to provide a high-salt wastewater membrane softening and hardness reduction device to solve the problems raised in the above background technology. The present invention has a novel structure. Through multiple groups of evaporation boxes and vertical pipes connected to tubular membrane components, the wastewater is evaporated and crystallized separately to improve efficiency. The generated water vapor is filtered by the tubular membrane component. The bottom of the evaporation box and the inside of the vertical pipe can be cleaned in time through the pushing component and the cleaning component to discharge the precipitate and avoid affecting the wastewater treatment efficiency.

[0005] In order to achieve the above-mentioned purpose, the present invention is realized through the following technical solutions: a high-salt wastewater membrane softening and hardness reduction device, comprising a water delivery platform, a water inlet pipe is fixed to the top of the outermost end of the water delivery platform, and four groups of evaporation boxes are fixed at equal distances on the other end of the water delivery platform, and an evaporation plate is rotatably installed inside the evaporation box through a bearing, the water delivery platform is connected to the evaporation box at the top of the evaporation plate through a pipe, and the evaporation box is provided with a push-out assembly at the bottom of the evaporation plate, and the push-out assembly includes an upper scraper and a lower scraper, both of which are embedded in the inner wall of the evaporation box on the side close to the water delivery platform, and the lower scraper is located at the bottom of the first scraper, and the top of the upper scraper is connected to the evaporation plate. The bottom surfaces of the plates are on the same straight line, a slag discharge port is provided at the bottom of the other side of the evaporator, and a sealing plate is slidably inserted inside the slag discharge port, a heating device is provided at the outer end of the evaporator on one side of the slag discharge port, a connecting layer is fixed between adjacent evaporator boxes, and an air inlet and outlet pipes are installed between the heating equipment and the connecting layer, a vertical pipe is fixed on the top of the evaporator, and a tubular membrane assembly is fixedly installed on one side of the top of the vertical pipe, the tubular membrane assembly is fixed on the top of the heating equipment, a cleaning assembly is provided on the top of the vertical pipe, and the cleaning assembly includes a conical baffle, the bottom of the conical baffle is a circular plate, the top of the conical baffle is a cone, and the conical baffle slides along the inside of the vertical pipe.

[0006] Furthermore, the evaporation box is fixed with an annular heat exchange tube at the bottom of the evaporation plate, and the other end of the annular heat exchange tube is installed inside the water supply platform. The evaporation box is fixed with a return pipe on one side of the bottom of the evaporation plate, and the other end of the return pipe is connected to the water supply platform.

[0007] Furthermore, a pressure relief valve is fixed to one side of the top of the evaporator box, rubber strips are fixed to both sides of the evaporator plate, the shaft of the evaporator plate passes through the evaporator box, and a transmission belt is sleeved and installed on the surface of the shaft adjacent to the evaporator box. A first motor is fixed to the outer wall of the heating equipment, and the output end of the first motor is fixedly connected to the driving pulley of the transmission belt.

[0008] Furthermore, a horizontal plate is fixed on the outside of the sealing plate, a first electric push rod is fixed on the outer wall of the evaporation box, and the extended end of the first electric push rod is fixedly connected to the horizontal plate, and a collection tank is fixed between the slag discharge port of the evaporation box and the heating equipment.

[0009] Furthermore, the ejection assembly also includes an electric push rack, the outer end of the evaporation box is slidably plugged with the electric push rack, and the electric push rack is fixedly connected to the upper scraper, guide plates are fixed on both sides of the bottom of the sealing plate, the lower scraper is slidably plugged with a vertical plate corresponding to the position of the guide plate, and the guide plate is slidably plugged at the bottom of the vertical plate, and the vertical plate passes through the top of the lower scraper.

[0010] Furthermore, a slot is provided at the bottom of the upper scraper corresponding to the position where the vertical plate passes through, and the vertical plate is inserted into the slot after the sealing plate is raised. The lower scraper is provided with grooves corresponding to the two ends of the annular heat exchange tube, and the grooves slide along both sides of the annular heat exchange tube, and a rubber layer is provided between the two grooves.

[0011] Furthermore, the cleaning assembly also includes a collection frame, a collection frame is fixed to the outer periphery of the top of the vertical tube, a sliding rod is fixed to one side of the collection frame, the top of the vertical tube is sealed and covered with a top plate, and one end of the top plate is slidably sleeved on the sliding rod, and a return spring is sleeved on the surface of the sliding rod between the top plate and the collection frame.

[0012] Furthermore, a gear ring is rotatably installed at the center of the top plate, and a gear is meshedly connected to one side of the gear ring. A second motor is fixed to the top of the top plate through a mounting frame, and an output end of the second motor is fixedly connected to the gear.

[0013] Furthermore, an inclined plate is rotatably mounted on the axis of the top plate via a hollow rotating shaft, and the conical surface of the conical baffle can be in sliding contact with the inclined plate.

[0014] Furthermore, the sliding rod is located at the top of the top plate axis and is fixedly installed with a winding seat through a mounting plate, and the winding shaft of the winding seat is wound with a pull rope, which passes through the gear ring and the top plate and is fixedly connected to the top of the conical baffle.

[0015] Beneficial effects of the present invention:

[0016] 1. When the winding seat unwinds the pull rope, the conical baffle can naturally descend to the bottom of the vertical pipe, blocking the vertical pipe and the evaporator box, increasing the temperature rise rate inside the evaporator box, and being more conducive to improving evaporation efficiency. The temperature inside the evaporator box is monitored by a pressure sensor and a temperature sensor. When the temperature reaches a certain value, the pressure relief valve is opened to reduce the internal pressure. At the same time, the electric winding seat rewinds the pull rope, and the conical baffle moves upward along the vertical pipe as the pull rope is pulled. During the movement, the inner wall of the vertical pipe is cleaned to avoid the residue of scale and other attachments.

[0017] 2. In the present invention, at the moment when the conical baffle contacts the bottom of the top rod, the inclined plate contacts the conical surface of the conical baffle, and the second motor drives the gear to rotate and engage with the gear ring, thereby driving the inclined plate to slide along the conical surface of the conical baffle, and cleaning the impurities on the conical surface into the collection frame.

[0018] 3. In the present invention, as the evaporation plate rotates, the remaining wastewater and crystals can be rotated to the bottom layer of the evaporation box. The upper scraper is pushed by the electric push frame to move, the bottom of the evaporation plate is cleaned, and the adhered crystals are scraped off. After the remaining wastewater and impurities at the bottom of the evaporation plate in the evaporation box are naturally precipitated and layered, the supernatant is returned to the water supply platform through the reflux pipe. The first electric push rod drives the sealing plate to rise, and the guide plate drives the vertical plate to move upward along the lower scraper, inserted into the slot and connected with the upper scraper. Then the electric push frame drives the upper and lower scrapers to move together, pushing the sediment at the bottom of the evaporation box out from the side of the slag discharge port and collected by the collection tank.

[0019] 4. The present invention uses the first motor and the transmission belt to drive the evaporation plates inside the four groups of evaporation boxes to flip synchronously. The annular heat exchange tube is at a certain distance from the evaporation plate and will not interfere with the rotation of the evaporation plate. After each evaporation is completed, the remaining waste liquid and crystal precipitation are sent to the lower layer, which is convenient for the next group of wastewater evaporation treatment while there is still residual heat.

[0020] 5. Compared with the existing technology, the present invention connects multiple groups of evaporation boxes and vertical pipes with tubular membrane modules to separate and evaporate and crystallize wastewater, thereby improving efficiency. The generated water vapor is filtered by the tubular membrane module. The bottom of the evaporation box and the inside of the vertical pipe can be cleaned in time by the push-out module and the cleaning module to discharge the sediment, thereby avoiding affecting the wastewater treatment efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the overall front structure of a high-salt wastewater membrane softening and hardness reduction device of the present invention;

[0022] Figure 2 This is a schematic diagram of the overall side structure of a high-salt wastewater membrane softening and hardness reduction device of the present invention;

[0023] Figure 3 This is a schematic diagram of the internal structure of a water delivery platform of a high-salt wastewater membrane softening and hardness reduction device of the present invention;

[0024] Figure 4 This is a schematic diagram of the delivery end of the evaporation box of a high-salt wastewater membrane softening and hardness reduction device of the present invention;

[0025] Figure 5 This is a schematic structural diagram of the first scraper and the second scraper of a high-salt wastewater membrane softening and hardness reduction device of the present invention;

[0026] Figure 6 This is a schematic diagram of the internal structure of an evaporation box of a high-salt wastewater membrane softening and hardness reduction device of the present invention;

[0027] Figure 7 This is a schematic structural diagram of a cleaning component of a high-salt wastewater membrane softening and hardness reduction device according to the present invention;

[0028] Figure 8 This is a schematic diagram of the connection between the top plate and baffle of a high-salt wastewater membrane softening and hardness reduction device of the present invention.

[0029] In the figure: 1. Water supply platform; 11. Water inlet pipe; 12. Annular heat exchange tube; 2. Evaporation box; 21. Pressure relief valve; 22. Vertical pipe; 23. Return pipe; 24. First motor; 25. Drive belt; 26. Slag discharge port; 27. Sealing plate; 28. Horizontal plate; 29. First electric push rod; 210. Evaporation plate; 211. Rubber strip; 3. Tubular membrane module; 4. Heating equipment; 41. Connecting layer; 42. Inlet and outlet pipes; 5. Push rod Outlet assembly; 51. Electric push frame; 52. Upper scraper; 53. Lower scraper; 54. Through groove; 55. Rubber layer; 56. Vertical plate; 57. Guide plate; 58. Slot; 6. Cleaning assembly; 61. Top plate; 62. Collection frame; 63. Slide rod; 64. Second motor; 65. Gear; 66. Gear ring; 67. Winding seat; 68. Pull rope; 69. Return spring; 610. Inclined plate; 611. Conical baffle; 7. Collection trough. DETAILED DESCRIPTION

[0030] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0031] See also Figures 1 to 8The present invention provides a technical solution: a high-salt wastewater membrane softening and hardness reduction device, comprising a water delivery platform 1, a water inlet pipe 11 is fixed to the top of the outermost end of the water delivery platform 1, and four groups of evaporation boxes 2 are fixed at equal distances on the other end of the water delivery platform 1, and an evaporation plate 210 is rotatably installed inside the evaporation box 2 through a bearing, the water delivery platform 1 is connected to the evaporation box 2 at the top of the evaporation plate 210 through a pipeline, and the evaporation box 2 is provided with a push-out assembly 5 at the bottom of the evaporation plate 210, and the push-out assembly 5 includes an upper scraper 5 2 and a lower scraper 53, the upper scraper 52 and the lower scraper 53 are both embedded in the inner wall of the evaporation box 2 near the water delivery platform 1, and the lower scraper 53 is located at the bottom of the first scraper, the top of the upper scraper 52 is in the same straight line with the bottom surface of the evaporation plate 210, the bottom of the other side of the evaporation box 2 is provided with a slag discharge port 26, and a sealing plate 27 is slidably inserted inside the slag discharge port 26. The outer end of the evaporation box 2 on the side of the slag discharge port 26 is provided with a heating device 4, and a connecting layer 41 is fixed between adjacent evaporation boxes 2. An air inlet and outlet pipe 42 is installed between the heating device 4 and the connecting layer 41. A vertical pipe 22 is fixed to the top of the evaporation box 2, and a tubular membrane assembly 3 is fixed to one side of the top of the vertical pipe 22. The tubular membrane assembly 3 is fixed to the top of the heating device 4. A cleaning assembly 6 is provided on the top of the vertical pipe 22. The cleaning assembly 6 includes a conical baffle 611. The bottom of the conical baffle 611 is a circular plate, and the top of the conical baffle 611 is a cone. The conical baffle 611 slides along the inside of the vertical pipe 22. When the device is used The wastewater is fed into the water delivery platform 1 through the water inlet pipe 11, and then respectively fed into the four evaporation boxes 2. Heat is transferred to the upper layer of the evaporation box 2 through the heating equipment 4, the air inlet and outlet pipes 42 and the connecting layer 41, causing it to heat up and evaporate the wastewater. After evaporation to generate steam, the vertical pipe 22 is opened to connect the tubular membrane assembly 3, and the water vapor is fed into the tubular membrane assembly 3. The remaining waste liquid and crystal precipitation are fed into the lower layer of the evaporation box 2 through the rotation of the evaporation plate 210. The precipitation is discharged through the pushing assembly 5, and the cleaning assembly 6 cleans the inside of the vertical pipe 22.

[0032] In this embodiment, the evaporation box 2 is located at the bottom of the evaporation plate 210 and is fixed with an annular heat exchange tube 12, and the other end of the annular heat exchange tube 12 is installed inside the water delivery platform 1. The evaporation box 2 is located on one side of the bottom of the evaporation plate 210 and is fixed with a return pipe 23, and the other end of the return pipe 23 is connected to the water delivery platform 1. The residual waste liquid and the precipitated heat in the lower layer of the evaporation box 2 are transferred to the new wastewater in the water delivery platform 1 through the annular heat exchange tube 12. In addition, the return pipe 23 returns the supernatant to the inside of the water delivery platform 1. While being processed again, the new wastewater can be preheated, thereby reducing the energy consumption of subsequent evaporation.

[0033] In this embodiment, a pressure relief valve 21 is fixed to one side of the top of the evaporation box 2, and rubber strips 211 are fixed to both sides of the evaporation plate 210. The shaft of the evaporation plate 210 passes through the evaporation box 2, and a transmission belt 25 is sleeved and installed on the surface of the shaft adjacent to the evaporation box 2. A first motor 24 is fixed to the outer wall of the heating device 4, and the output end of the first motor 24 is fixedly connected to the driving wheel of the transmission belt 25. Under the joint drive of the first motor and the transmission belt 25, the evaporation plates 210 inside the four groups of evaporation boxes 2 are synchronously flipped. The annular heat exchange tube 12 is at a certain distance from the evaporation plate 210 and will not interfere with the rotation of the evaporation plate 210. After each evaporation is completed, the remaining waste liquid and crystal precipitation are sent to the lower layer, which is convenient for the next group of wastewater evaporation treatment while there is still residual temperature.

[0034] In this embodiment, a transverse plate 28 is fixed to the outer side of the sealing plate 27, a first electric push rod 29 is fixed to the outer wall of the evaporation box 2, and the extended end of the first electric push rod 29 is fixedly connected to the transverse plate 28, a collecting trough 7 is fixed between the slag discharge port 26 of the evaporation box 2 and the heating device 4, the pushing assembly 5 also includes an electric push frame 51, the outer end of the evaporation box 2 is slidably plugged with the electric push frame 51, and the electric push frame 51 is fixedly connected to the upper scraper 52, the bottom two sides of the sealing plate 27 are fixed with guide plates 57, the lower scraper 5 3 The position of the guide plate 57 is slidably plugged with a vertical plate 56, and the guide plate 57 is slidably plugged into the bottom of the vertical plate 56. The vertical plate 56 passes through the top of the lower scraper 53. A slot 58 is provided at the bottom of the upper scraper 52 corresponding to the position where the vertical plate 56 passes through. The vertical plate 56 is plugged into the slot 58 after the sealing plate 27 is raised. The lower scraper 53 is provided with a through groove 54 at both ends corresponding to the annular heat exchange tube 12, and the through groove 54 slides along both sides of the annular heat exchange tube 12. A rubber layer 55 is provided between the two through grooves 54. As the evaporation plate 2 10 rotates, and the remaining waste water and crystals can be transferred to the bottom of the evaporation box 2. The upper scraper 52 is pushed by the electric push frame 51 to move, and the bottom of the evaporation plate 210 is cleaned at this time, and the adhered crystals are scraped off. After the waste water and impurities remaining at the bottom of the evaporation plate 210 in the evaporation box 2 are naturally precipitated and layered, the supernatant is returned to the inside of the water supply platform 1 through the reflux pipe 23. The first electric push rod 29 drives the sealing plate 27 to rise, and the guide plate 57 drives the vertical plate 56 to move upward along the lower scraper 53, and is inserted into the slot 58 to connect with the upper scraper 52. Then the electric push frame 51 drives the upper scraper 52 and the lower scraper 53 to move together, pushing the sediment at the bottom of the evaporator 2 out from the side of the slag discharge port 26 and collected by the collecting tank 7. During the movement of the lower scraper 53, it can pass through the surface of the annular heat exchange tube 12 through the through groove 54 and the rubber layer 55 without movement interference, and the openings of the vertical plate 56 and the lower scraper 53 are small, so the impact on the discharge of the sediment is small. In this structure, the electric push frame 51 is actually a combination structure of an electric push rod and a plug-in frame to promote the movement of the upper scraper 52 and the lower scraper 53.

[0035] In this embodiment, the cleaning assembly 6 also includes a collection frame 62, a collection frame 62 is fixed to the outer periphery of the top of the vertical tube 22, a slide rod 63 is fixed to one side of the collection frame 62, the top of the vertical tube 22 is sealed and covered with a top plate 61, and one end of the top plate 61 is slidably sleeved on the slide rod 63, and the slide rod 63 is located on the surface between the top plate 61 and the collection frame 62 and is sleeved with a return spring 69, a gear ring 66 is rotatably installed at the center of the top plate 61, and a gear 65 is meshed with one side of the gear ring 66, a second motor 64 is fixed to the top of the top plate 61 through a mounting frame, and the output end of the second motor 64 It is fixedly connected to the gear 65, and the axis of the top plate 61 is rotatably installed with an inclined plate 610 through a hollow rotating shaft. The conical surface of the conical baffle 611 can slide in contact with the inclined plate 610. The sliding rod 63 is located at the top of the axis of the top plate 61 and is fixedly installed with a winding seat 67 through a mounting plate. The winding shaft of the winding seat 67 is wound with a pull rope 68, and the pull rope 68 passes through the gear ring 66 and the top plate 61 and is fixedly connected to the top of the conical baffle 611. The conical baffle 611 itself has a certain weight. Therefore, when the winding seat 67 unwinds the pull rope 68, the conical baffle 611 can naturally drop to the bottom of the vertical tube 22 The vertical pipe 22 and the evaporation box 2 are blocked to increase the speed of the temperature rise inside the evaporation box 2, which is more conducive to the improvement of the evaporation efficiency. The temperature inside the evaporation box 2 is monitored by the pressure sensor and the temperature sensor. When the temperature reaches a certain value, the pressure relief valve 21 is opened to reduce the internal pressure. At the same time, the electric winding seat 67 winds up the pull rope 68, and the conical baffle 611 moves upward along the vertical pipe 22 with the traction of the pull rope 68. During the movement, the inner wall of the vertical pipe 22 is cleaned to avoid the residue of scale and other attachments. Until the conical baffle 611 lifts the top plate 61, at this time, the connecting pipe of the tubular membrane module 3 and The evaporation box 2 is connected, and steam is sent into the tubular membrane assembly 3 for filtration before being sent out. The top plate 61 slides along the slide rod 63. At the moment when the conical baffle 611 contacts the bottom of the top rod, the inclined plate 610 contacts the conical surface of the conical baffle 611. The second motor 64 drives the gear 65 to rotate and engage with the gear ring 66, thereby driving the inclined plate 610 to slide along the conical surface of the conical baffle 611, and the impurities cleaned on the conical surface are cleaned into the collection frame 62. Here, a solenoid valve can be set at the connection end of the tubular membrane assembly 3 and the vertical pipe 22 to prevent the impurities cleaned during the movement of the conical baffle 611 from entering the interior of the tubular membrane assembly 3.

[0036] When the device is in use, wastewater is sent into the water delivery platform 1 through the water inlet pipe 11, and then respectively sent into the four evaporation boxes 2. Heat is transferred to the upper layer of the evaporation box 2 through the heating equipment 4, the inlet and outlet pipes 42 and the connecting layer 41, so that it is heated and evaporates the wastewater. After evaporation to generate steam, the vertical pipe 22 is opened to connect the tubular membrane assembly 3, and the water vapor is sent into the tubular membrane assembly 3. The heat of the remaining waste liquid and precipitation in the lower layer of the evaporation box 2 is transferred to the new wastewater in the water delivery platform 1 through the annular heat exchange pipe 12, and the supernatant is returned to the water delivery platform 1 by the reflux pipe 23. While being processed again, the new wastewater can be preheated to reduce the energy consumption of subsequent evaporation. Driven by the first motor and the transmission belt 25, the evaporation plates 21 inside the four sets of evaporation boxes 2 0 is turned synchronously, and the annular heat exchange tube 12 is at a certain distance from the evaporation plate 210, and will not interfere with the rotation of the evaporation plate 210. After each evaporation is completed, the remaining waste liquid and crystal precipitation are sent to the lower layer, which is convenient for the next group of wastewater evaporation treatment while there is still residual temperature. As the evaporation plate 210 rotates, the remaining waste water and crystals can be rotated to the bottom layer of the evaporation box 2, and the upper scraper 52 is pushed to move by the electric push frame 51 to clean the bottom of the evaporation plate 210 at this time, and the adhered crystals are scraped off. After the remaining waste water and impurities at the bottom of the evaporation plate 210 in the evaporation box 2 are naturally precipitated and layered, the supernatant is sent back to the inside of the water supply platform 1 through the reflux pipe 23, and the first electric push rod 29 drives the sealing plate 27 to rise, and the guide plate 57 drives the vertical plate 56 along the lower The scraper 53 moves upward, inserts into the slot 58 and connects with the upper scraper 52, and then the electric push frame 51 drives the upper scraper 52 and the lower scraper 53 to move together, pushing the sediment at the bottom of the evaporator 2 out from the side of the slag discharge port 26 and collected by the collecting tank 7. During the movement of the lower scraper 53, it can pass through the surface of the annular heat exchange tube 12 through the groove 54 and the rubber layer 55 without movement interference, and the opening of the vertical plate 56 and the lower scraper 53 is small, so the impact on the discharge of sediment is small. In this structure, the electric push frame 51 is actually a combination of an electric push rod and a plug-in frame to push the movement of the upper scraper 52 and the lower scraper 53. The conical baffle 611 itself has a certain weight, so when the winding seat 67 unwinds the pull rope 68, the conical baffle 611 can The evaporator 2 is then moved back to the bottom of the vertical pipe 22, and the vertical pipe 22 is naturally dropped to the bottom of the vertical pipe 22, thereby blocking the vertical pipe 22 and the evaporator 2, and increasing the speed of the temperature rise inside the evaporator 2, which is more conducive to improving the evaporation efficiency. The temperature inside the evaporator 2 is monitored by the pressure sensor and the temperature sensor. When the temperature reaches a certain value, the pressure relief valve 21 is opened to reduce the internal pressure. At the same time, the electric winding seat 67 winds up the pull rope 68, and the conical baffle 611 moves upward along the vertical pipe 22 with the traction of the pull rope 68. During the movement, the inner wall of the vertical pipe 22 is cleaned to avoid the residue of scale and other attachments, until the conical baffle 611 lifts the top plate 61. At this time, the connecting pipe of the tubular membrane assembly 3 is connected to the evaporator 2, and the steam is sent into the tubular membrane assembly 3 for filtration before being sent out. The top plate 61 slides along the slide rod 63.At the moment the conical baffle 611 contacts the bottom of the push rod, the inclined plate 610 contacts the conical surface of the conical baffle 611. The second motor 64 drives the gear 65 to rotate and mesh with the gear ring 66, which in turn drives the inclined plate 610 to slide along the conical surface of the conical baffle 611, cleaning the impurities on the conical surface into the collection frame 62.

[0037] The basic principles, main features and advantages of the present invention are shown and described above. It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention.

[0038] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A high-salt wastewater membrane softening and hardness reduction device, comprising a water delivery platform (1), characterized in that: A water inlet pipe (11) is fixed to the top of the outermost end of the water delivery platform (1), and four groups of evaporation boxes (2) are fixed at equal intervals on the other end of the water delivery platform (1), and an evaporation plate (210) is rotatably installed inside the evaporation box (2) through a bearing. The water delivery platform (1) is connected to the evaporation box (2) at the top of the evaporation plate (210) through a pipe. The evaporation box (2) is provided with a push-out assembly (5) at the bottom of the evaporation plate (210). The push-out assembly (5) includes an upper scraper (52) and a lower scraper (53). The upper scraper (52) and the lower scraper (53) are both embedded in the inner wall of the evaporation box (2) on the side close to the water delivery platform (1), and the lower scraper (53) is located at the bottom of the first scraper. The top of the upper scraper (52) and the bottom surface of the evaporation plate (210) are in the same straight line. A slag discharge port is provided at the bottom of the other side of the evaporation box (2). (26), and a sealing plate (27) is slidably inserted inside the slag discharge port (26), a heating device (4) is provided at the outer end of the evaporation box (2) on one side of the slag discharge port (26), a connecting layer (41) is fixed between adjacent evaporation boxes (2), an inlet and outlet air pipe (42) is installed between the heating device (4) and the connecting layer (41), a vertical pipe (22) is fixed on the top of the evaporation box (2), and a tubular membrane assembly (3) is fixed on one side of the top of the vertical pipe (22), the tubular membrane assembly (3) is fixed on the top of the heating device (4), a cleaning assembly (6) is provided on the top of the vertical pipe (22), and the cleaning assembly (6) includes a conical baffle (611), the bottom of the conical baffle (611) is a circular plate, and the top of the conical baffle (611) is a cone, and the conical baffle (611) slides along the inside of the vertical pipe (22).

2. The high-salt wastewater membrane softening and hardness reduction device according to claim 1 is characterized in that: The evaporation box (2) is located at the bottom of the evaporation plate (210), and an annular heat exchange tube (12) is fixed thereto, and the other end of the annular heat exchange tube (12) is installed inside the water supply platform (1). The evaporation box (2) is located at one side of the bottom of the evaporation plate (210), and a return pipe (23) is fixed thereto, and the other end of the return pipe (23) is in communication with the water supply platform (1).

3. The high-salt wastewater membrane softening and hardness reduction device according to claim 1 is characterized in that: A pressure relief valve (21) is fixed to one side of the top of the evaporation box (2), and rubber strips (211) are fixed to both sides of the evaporation plate (210). The shaft of the evaporation plate (210) passes through the evaporation box (2), and a transmission belt (25) is sleeved and installed on the surface of the shaft adjacent to the evaporation box (2). A first motor (24) is fixed to the outer wall of the heating device (4), and the output end of the first motor (24) is fixedly connected to the driving wheel of the transmission belt (25).

4. The high-salt wastewater membrane softening and hardness reduction device according to claim 3 is characterized by: A transverse plate (28) is fixed to the outside of the sealing plate (27), a first electric push rod (29) is fixed to the outer wall of the evaporation box (2), and an extended end of the first electric push rod (29) is fixedly connected to the transverse plate (28), and a collecting trough (7) is fixed between the slag discharge port (26) of the evaporation box (2) and the heating device (4).

5. The high-salt wastewater membrane softening and hardness reduction device according to claim 4 is characterized in that: The ejection assembly (5) further includes an electric push frame (51), the outer end of the evaporation box (2) is slidably plugged with the electric push frame (51), and the electric push frame (51) is fixedly connected to the upper scraper (52), and guide plates (57) are fixed on both sides of the bottom of the sealing plate (27), and the lower scraper (53) is slidably plugged with a vertical plate (56) at a position corresponding to the guide plate (57), and the guide plate (57) is slidably plugged at the bottom of the vertical plate (56), and the vertical plate (56) passes through the top of the lower scraper (53).

6. The high-salt wastewater membrane softening and hardness reduction device according to claim 5, characterized in that: A slot (58) is provided at the bottom of the upper scraper (52) corresponding to the position where the vertical plate (56) passes through, and the vertical plate (56) is inserted into the slot (58) after the sealing plate (27) is raised. The lower scraper (53) is provided with through grooves (54) corresponding to both ends of the annular heat exchange tube (12), and the through grooves (54) slide along both sides of the annular heat exchange tube (12). A rubber layer (55) is provided between the two through grooves (54).

7. The high-salt wastewater membrane softening and hardness reduction device according to claim 1 is characterized by: The cleaning assembly (6) further comprises a collecting frame (62), the collecting frame (62) being fixed to the outer periphery of the top of the vertical tube (22), a sliding rod (63) being fixed to one side of the collecting frame (62), the top of the vertical tube (22) being sealed and covered with a top plate (61), and one end of the top plate (61) being slidably sleeved on the sliding rod (63), and a return spring (69) being sleeved on the surface of the sliding rod (63) located between the top plate (61) and the collecting frame (62).

8. The high-salt wastewater membrane softening and hardness reduction device according to claim 7, characterized in that: A gear ring (66) is rotatably mounted at the center of the top plate (61), and a gear (65) is meshedly connected to one side of the gear ring (66). A second motor (64) is fixed to the top of the top plate (61) via a mounting frame, and an output end of the second motor (64) is fixedly connected to the gear (65).

9. The high-salt wastewater membrane softening and hardness reduction device according to claim 8, characterized in that: An inclined plate (610) is rotatably mounted on the axis of the top plate (61) via a hollow rotating shaft, and the conical surface of the conical baffle (611) can be in sliding contact with the inclined plate (610).

10. The high-salt wastewater membrane softening and hardness reduction device according to claim 9, characterized in that: The sliding rod (63) is located at the top of the axis of the top plate (61) and is fixedly mounted with a winding seat (67) through a mounting plate, and the winding shaft of the winding seat (67) is wound with a pull rope (68), and the pull rope (68) passes through the gear ring (66) and the top plate (61) and is fixedly connected to the top of the conical baffle (611).

Images