A high-salt wastewater treatment device for lignite power generation based on concentration and separation

Abstract

A high-salt wastewater treatment device for lignite power generation based on concentration and separation belongs to the technical field of wastewater treatment. In order to solve the problem that when the existing wastewater treatment equipment evaporates and crystallizes the salt in the high-salt wastewater, a hard crystal layer is formed on the inner wall of the equipment to block the volatilization of the internal residual moisture and the salt crystallization treatment efficiency; the present invention uses the cooperation of a rotating shaft, a gear box and a bevel gear set to stack multiple evaporation plates in the concentration evaporation tank by using a rotating shaft. When the rotating shaft rotates, the centrifugal force is used to drive the material-pushers to fit the inclined bottom plate of the inner groove at the top of the evaporation plate for deflection and movement adjustment. At the same time, the rotating shaft energizes the evaporation plate based on a conductive ring to evaporate, concentrate and crystallize the high-salt wastewater. The motor speed is intermittently adjusted to control the centrifugal force of the rotating shaft, so as to control the deflection and inclination angle of the spring rod, so that the push rod fits the inclined bottom plate of the electric heating plate and slides and stirs and disperses the salt crystals attached to the surface, so as to achieve rapid drying after the salt crystals are precipitated.

Description

Technical Field

[0001] The invention relates to the technical field of wastewater treatment, and in particular to a high-salt wastewater treatment device for lignite power generation based on concentration and separation. Background Art

[0002] A large amount of polluted flue gas is generated during the lignite power generation process. The polluted flue gas needs to be purified through multiple steps such as dust removal, desulfurization, and denitrification before it can be discharged. In these steps, in order to remove pollutants in the flue gas, a large amount of water is used for spraying, washing, and other operations. After these waters come into contact with and absorb pollutants in the flue gas, they will form wastewater containing high concentrations of salt and pollutants. During the purification and discharge process of high-salt wastewater, the high concentration of salt will be separated and extracted for recycling.

[0003] For example, CN117383643B discloses a high-salt wastewater treatment device and its treatment process, including an outer shell, the interior of the outer shell is slidably connected to a reaction tank, the outer shell is slidably connected to a telescopic heating shell, the fixed part of the telescopic heating shell is fixedly connected to the reaction tank, a cavity is provided between the telescopic heating shell and the reaction tank, the end of the outer shell away from the telescopic heating shell is detachably connected to an end cap, the side of the end cap away from the telescopic heating shell is fixedly connected to an air transmission ring, and the height of the telescopic heating shell is reduced as the liquid level of the high-salt wastewater in the reaction tank drops, thereby reducing the heat transfer distance, improving the heat transfer efficiency, and reducing the heat loss during the heating process. However, when the existing wastewater treatment equipment evaporates and crystallizes the salt in the high-salt wastewater, the salt crystals adhere to the bottom plate and the inner wall at the bottom of the reaction tank after the water evaporates completely to form a hard crystal layer, and the residual moisture in the crystal layer is difficult to evaporate quickly, and it takes a certain amount of time to continue heating, which affects the treatment efficiency of the salt crystallization.

[0004] Therefore, a high-salt wastewater treatment device for lignite power generation based on concentration separation is introduced. Summary of the invention

[0005] The purpose of the present invention is to provide a high-salt wastewater treatment device for lignite power generation based on concentration and separation, aiming to solve the problem in the above-mentioned background technology that when the existing wastewater treatment equipment evaporates and crystallizes the salt in the high-salt wastewater, a hard crystal layer is formed on the inner wall of the equipment, which blocks the volatilization of residual moisture in the crystal, thereby affecting the treatment efficiency of salt crystallization during high-salt wastewater treatment.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a high-salt wastewater treatment device for lignite power generation based on concentration and separation, comprising a concentration evaporation tank and a top cover sealed on the top of the concentration evaporation tank, a steam outlet pipe is arranged at the middle of the top cover, a rotating shaft is movably penetrated and arranged at the middle of the bottom plate of the concentration evaporation tank, the rotating shaft is a hollow structure with an opening at the lower end, a gear box is fixedly connected to the lower end of the concentration evaporation tank, the lower end of the rotating shaft penetrates the gear box and extends to the bottom thereof, a bevel gear set is fixedly connected to the outer wall of the rotating shaft in the gear box, a motor is fixedly connected to the bottom of the concentration evaporation tank on one side of the gear box, the output end of the motor is fixedly connected to the transmission gear of the bevel gear set, a plurality of evaporation disks are evenly spaced on the outer wall of the rotating shaft in the concentration evaporation tank, a material shifting piece is fixedly connected to the outer wall of the rotating shaft above the evaporation disk, a funnel-shaped inner groove is arranged on the top of the evaporation disk, a material discharge port is opened on the side wall of the rotating shaft at the bottom plate of the inner groove of the evaporation disk, and a movable sealing piece is arranged on the inner wall of the inner cavity of the rotating shaft inside the material discharge port;

[0007] The material shifting member includes a fixed seat fixedly connected to the outer wall of the rotating shaft and a spring rod movably connected to the side wall between the bottom protrusions at the end of the fixed seat. The fixed seats are evenly distributed in a ring shape on the outer wall of the rotating shaft above each layer of the evaporation plate. A pushing rod is fixedly connected to the bottom of the spring rod, and a feeding port is arranged corresponding to the pushing rod. The lower end of the pushing rod is arranged in contact with the oblique inner wall of the groove in the evaporation plate. A reset spring is fixedly connected between the fixed end of the spring rod and the side wall of the rotating shaft, a counterweight block is fixedly connected to the side wall of the movable end of the spring rod adjacent to the top of the pushing rod, an auxiliary shifting rod is fixedly connected to the outer wall of one end of the pushing rod, and a limiting protrusion is fixedly connected to the oblique bottom wall of the groove in the evaporation plate corresponding to the auxiliary shifting rod.

[0008] Furthermore, the rotating shaft includes an insulating sleeve and a conductive cylinder embedded in the side wall of the insulating sleeve, a conductive ring is fixedly connected to the top of the gear box, the conductive ring is movably clamped on the outside of the conductive cylinder, a conductive cable is fixedly connected to the wiring point at one end of the conductive ring, and annular openings are evenly spaced on the outer wall of the insulating sleeve in the concentrated evaporator tank, an evaporating plate is fixedly sleeved in the annular opening, and a discharge port passes through the insulating sleeve and the conductive cylinder.

[0009] Furthermore, the evaporating plate includes a protective shell and an annular conductive seat fixedly connected to the upper end of the bottom plate at the middle hole of the protective shell, fixed columns are evenly spaced and fixedly connected to the bottom plate of the protective shell outside the annular conductive seat, an electric heating plate is fixedly connected to the top of the fixed columns, a conductive contact at the lower end of the electric heating plate is fixedly connected to the annular conductive seat, an annular head is provided on the inner wall of the middle hole of the annular conductive seat, and when the electric heating plate and the protective shell are fixedly clamped on the outer wall of the insulating sleeve, the annular head is clamped in the annular opening and is arranged to fit the outer wall of the conductive tube.

[0010] Furthermore, the auxiliary lever includes a fixed block fixedly connected to the outer wall of one end of the push rod and a vibration spring fixedly connected to the outer wall of the end of the fixed block, a scraper strip is fixedly connected to the end of the vibration spring, a corrosion-resistant sheath is fixedly connected between the scraper strip and the side wall of the fixed block, and the corrosion-resistant sheath is ringed on the outside of the vibration spring.

[0011] Furthermore, a mounting groove is provided at the bottom edge of the outer wall on one side adjacent to the fixed end of the scraper strip, and mounting cavities are evenly spaced inside the scraper strip above the mounting groove. An elastic rope is fixedly connected to the lower end of the top plate of the mounting cavity, and a T-shaped rod is fixedly connected to the bottom of the elastic rope. The lower end of the vertical rod of the T-shaped rod extends through the mounting groove, and a vibration ball is placed on the top of the horizontal rod of the T-shaped rod in the mounting cavity.

[0012] Furthermore, the movable sealing component includes a movable rod that is movably arranged through the insulating sleeve and the side wall of the conductive tube, the end of the movable rod extends through the insulating sleeve to the outside and is arranged corresponding to the spring rod, the other end of the movable rod in the inner cavity of the insulating sleeve is fixedly connected to a fixed plate, the fixed plate is suspended on the inner side of the output end of the discharge port, an elastic component is fixedly connected between the fixed plate and the inner wall of the insulating sleeve, the elastic component surrounds the outside of the movable rod, and a sealing sleeve is fixedly connected to the outer wall of the fixed plate close to the discharge port, and when the elastic component maintains a normal relaxation state, the sealing sleeve is engaged and sealed in the discharge port.

[0013] Furthermore, a cavity is provided inside the sealing sleeve, and a positioning shaft is movably provided on the inner wall of the cavity close to the fixed plate side, and the end of the positioning shaft extends through and extends to the outside of the fixed plate, and the end of the positioning shaft on the outside of the fixed plate is fixedly connected to a winding wheel, and an adjusting rope is wound on the outer wall of the winding wheel, and the end of the adjusting rope movably passes through the fixed plate above the movable rod and is fixedly connected to the inner wall of the insulating sleeve, and ears are fixedly connected to the outer wall of the positioning shaft in the cavity at evenly spaced intervals, and one end of the movable connecting rod is movably sleeved on the outside of the ear, and an annular groove is provided on the side wall of the sealing sleeve outside the cavity, and a T-type piston rod is movably connected to the other end of the movable connecting rod, and the end of the T-type piston rod extends into the annular groove, and an elastic membrane is fixedly connected between the inner walls at the end of the annular groove, and the annular groove between the elastic membrane and the piston head of the T-type piston rod is filled with a non-Newtonian fluid.

[0014] Furthermore, a mounting hole is provided on the outer wall of the terminal end of the positioning shaft in the cavity, a clockwork spring is fixedly connected in the mounting hole, a convex rod is fixedly connected at the corresponding mounting hole on the inner wall of the cavity, the terminal end of the convex rod extends into the mounting hole, the inner end of the clockwork spring is fixedly connected to the outer wall of the terminal end of the convex rod, the hanging ears are evenly distributed on the outer wall of the positioning shaft in a ring shape, and when the piston head of the T-shaped piston rod is located at the end of the annular groove away from the elastic membrane, the clockwork spring remains in a contracted state, and at this time, the movable connecting rod and the T-shaped piston rod remain inclined.

[0015] Furthermore, a water filter cartridge is movably provided on the top of the rotating shaft, and fixing rods are respectively fixedly connected to the outer walls on both sides of the top of the water filter cartridge, and the top ends of the fixing rods are fixedly connected to the outer walls of the bottom of the top cover on both sides of the steam outlet port, and a sedimentation cartridge is fixedly connected to the middle part of the upper end of the bottom plate of the water filter cartridge, and a transmission rod is movably provided at the middle part of the bottom plate of the sedimentation cartridge, and the lower end of the transmission rod is fixedly connected to the top of the rotating shaft, and a stirring rod is fixedly connected to the outer wall of the transmission rod.

[0016] Furthermore, the concentrated evaporator comprises an inner cylinder and an outer cylinder sleeved on the outer wall of the inner cylinder, the inner cylinder and the outer cylinder are coaxially arranged, a circulating cooling chamber is arranged between the inner cylinder and the outer cylinder, a cold water outlet pipe and a cold water inlet pipe are fixedly connected to the outer wall of one side of the outer cylinder from top to bottom, a wastewater inlet pipe and a dosing pipe are fixedly connected to the side walls of the outer cylinder on both sides of the cold water inlet pipe, respectively, the outlet ends of the wastewater inlet pipe and the dosing pipe both penetrate the side wall at the top port of the sedimentation cylinder and extend to the inside thereof, a silt extraction pipe is fixedly connected to the outer wall of one side at the bottom of the sedimentation cylinder, and the outlet end of the silt extraction pipe penetrates the inner cylinder and the side walls of the outer cylinder in turn and extends to the outside of the outer cylinder.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] The invention proposes a high-salt wastewater treatment device for lignite power generation based on concentration and separation. Through the cooperation of a rotating shaft, a gear box and a bevel gear set, a plurality of evaporation plates are stacked inside a double-layer structured concentration evaporation tank by using a rotating shaft. When the rotating shaft rotates, centrifugal force is used to drive a material-pusher to fit the inclined bottom plate of the inner groove at the top of the evaporation plate for deflection, stretching, movement and adjustment. At the same time, the rotating shaft energizes the evaporation plate based on a conductive ring to evaporate, concentrate and crystallize the high-salt wastewater. The motor speed is intermittently adjusted to control the centrifugal force of the rotating shaft to control the deflection and inclination angle of the spring rod. The spring rod is deflected and pulled by a reset spring to push the push rod to fit the inclined bottom plate of the electric heating plate to slide, and the salt crystals attached to the surface are stirred and dispersed, which is fully beneficial to the rapid drying and removal of residual water in the high-salt wastewater after the salt crystals are precipitated. The device is easy to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0020] Figure 2 It is a schematic diagram of the cross-sectional structure of the concentration evaporation tank of the present invention.

[0021] Figure 3 It is a schematic diagram of the installation structure of the rotating shaft, gear box, bevel gear set and motor of the present invention.

[0022] Figure 4 It is a schematic diagram of the installation structure of the rotating shaft, evaporating plate and material shifting member of the present invention.

[0023] Figure 5 It is a schematic diagram of the structure of the material shifting member of the present invention.

[0024] Figure 6 It is a schematic diagram of the assembly structure of the rotating shaft and the evaporation plate of the present invention.

[0025] Figure 7 It is a cross-sectional schematic diagram of the auxiliary lever of the present invention.

[0026] Figure 8 It is a schematic cross-sectional view of the scraper strip of the present invention.

[0027] Fig. 9 It is a schematic diagram of the installation structure of the movable sealing member of the present invention.

[0028] Fig.10 For the present invention Fig. 9 Enlarged structural diagram at A in the middle.

[0029] In the figure: 1. Concentration evaporation tank; 11. Circulation cooling chamber; 12. Wastewater inlet pipe; 13. Dosing pipe; 14. Sludge extraction pipe; 2. Top cover; 3. Rotating shaft; 31. Insulating sleeve; 32. Conductive cylinder; 33. Annular opening; 34. Feeding opening; 4. Evaporation plate; 41. Protective shell; 42. Annular conductive seat; 43. Fixed column; 44. Electric heating plate; 45. Limiting protrusion; 5. Material shifting piece; 51. Fixed seat; 52. Spring rod; 53. Push rod; 54. Reset spring; 55. Counterweight block; 56. Auxiliary lever; 561. Fixed block; 562. Vibration spring; 563. Scraper; 564. 4. Corrosion-resistant sheath; 565. Mounting groove; 566. Mounting cavity; 567. Elastic rope; 568. T-bar; 569. Vibrating ball; 6. Water filter cartridge; 61. Fixed rod; 62. Sedimentation cartridge; 63. Transmission rod; 64. Stirring rod; 7. Gear box; 71. Bevel gear set; 8. Conductive ring; 81. Conductive cable; 9. Movable seal; 91. Moving rod; 92. Fixed plate; 93. Elastic component; 94. Sealing sleeve; 941. Positioning shaft; 942. Winding wheel; 943. Adjusting rope; 944. Hanging ear; 945. Movable connecting rod; 946. T-piston rod; 947. Elastic membrane. DETAILED DESCRIPTION

[0030] 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.

[0031] See also Figure 1-Figure 3A high-salt wastewater treatment device for lignite power generation based on concentration and separation, including important components such as a concentration evaporation tank 1, a top cover 2, a steam outlet pipe, a rotating shaft 3, a gear box 7, a bevel gear set 71, an evaporation plate 4, a material-dispensing member 5 and a movable seal 9. The top cover 2 is sealed on the outer wall of the top port of the cylindrical concentration evaporation tank 1 by fixing bolts, and a steam outlet pipe is integrally formed and processed at the middle of the upper end of the top cover 2. A flange is fixedly connected to the end of the steam outlet pipe. The concentration evaporation tank 1 is composed of an inner cylinder and an outer cylinder sleeved on the outer wall of the inner cylinder to form an inner and outer double-layer structure. The inner cylinder and the outer cylinder are coaxially arranged. The inner cylinder and the outer cylinder are both made of 304 stainless steel, and the chromium oxide film on the surface can effectively prevent the salt water from hitting them. Corrosion is prevented and salt crystals are not easily attached to the outer wall. A circulating cooling chamber 11 is arranged between the inner cylinder and the outer cylinder. Cooling water is contained in the circulating cooling chamber 11 to cool the salt crystals. A cold water outlet pipe and a cold water inlet pipe are fixedly connected on the outer wall of one side of the outer cylinder from top to bottom. A wastewater inlet pipe 12 and a dosing pipe 13 are fixedly connected on the side walls of the outer cylinder on both sides of the cold water inlet pipe. The outlet ends of the wastewater inlet pipe 12 and the dosing pipe 13 both penetrate the side wall at the top port of the sedimentation cylinder 62 and extend to the interior thereof. A silt extraction pipe 14 is fixedly connected to the outer wall of one side at the bottom of the sedimentation cylinder 62. The outlet end of the silt extraction pipe 14 penetrates the side walls of the inner cylinder and the outer cylinder in turn and extends to the outside of the outer cylinder. A silt extraction pump is arranged at the output end of the silt extraction pipe 14.

[0032] A water filter cartridge 6 is movably provided on the top of the rotating shaft 3, and fixed rods 61 are fixedly connected to the outer walls on both sides of the top of the water filter cartridge 6, and the top of the fixed rod 61 is fixedly connected to the outer walls of the bottom of the top cover 2 on both sides of the steam outlet port. A sedimentation cartridge 62 is fixedly connected to the middle of the upper end of the bottom plate of the water filter cartridge 6, and a transmission rod 63 is movably provided at the middle of the bottom plate of the sedimentation cartridge 62. The lower end of the transmission rod 63 is fixedly connected to the top of the rotating shaft 3, and a stirring rod 64 is fixedly connected to the outer wall of the transmission rod 63. The wastewater inlet pipe 12 and the dosing pipe 13 simultaneously draw high-salt wastewater and treatment liquid into the sedimentation cartridge 62, and the two liquids are counter-mixed in the sedimentation cartridge 62, and the stirring rod 64 is used to rotate and stir, so as to promote the fusion reaction of the liquid and the wastewater, so that the heavy metal ions and impurities in the wastewater are precipitated, so as to be extracted at the bottom of the sedimentation cartridge 62 by the sludge extraction pipe 14 for treatment, and the precipitated wastewater enters the outer water filter cartridge 6 through sedimentation overflow, is filtered, and then drips onto the evaporation disk 4.

[0033] A rotating shaft 3 is movably provided at the middle of the bottom plate of the concentrated evaporator 1. The rotating shaft 3 is a hollow structure with an opening at the lower end. A gear box 7 is fixedly connected to the lower end of the concentrated evaporator 1. The lower end of the rotating shaft 3 penetrates the gear box 7 and extends below it. A bevel gear set 71 is fixedly connected to the outer wall of the rotating shaft 3 in the gear box 7. The bevel gear set 71 consists of two bevel gears meshing at a 90-degree angle, one of which is fixed to the outer wall of the rotating shaft 3 in the gear box 7, and the other is movably provided on the side wall of the gear box 7 through a shaft rod at the end. The end of the shaft rod extends through and extends to the outside of the gear box 7. The concentrated gear on one side of the gear box 7 A motor is fixedly connected to the bottom of the evaporation tank 1, and the output end of the motor is fixedly connected to the end of the shaft rod. A number of evaporation disks 4 are evenly spaced on the outer wall of the rotating shaft 3 in the concentrated evaporation tank 1. The diameters of the evaporation disks 4 are increased from top to bottom. The diameter of the bottom evaporation disk 4 is the same as the diameter of the inner cylinder. A material shifting piece 5 is fixedly connected to the outer wall of the rotating shaft 3 above the evaporation disk 4. A funnel-shaped inner groove is provided on the top of the evaporation disk 4. A feeding port 34 is provided on the side wall of the rotating shaft 3 at the bottom plate of the inner groove of the evaporation disk 4, and a movable sealing piece 9 is provided on the inner wall of the inner cavity of the rotating shaft 3 inside the feeding port 34.

[0034] In order to solve the problem that when the existing wastewater treatment equipment evaporates and crystallizes the salt in the high-salinity wastewater, a hard crystal layer is formed on the inner wall of the equipment, which blocks the volatilization of the residual moisture in the crystal, thus affecting the treatment efficiency of the salt crystallization in the high-salinity wastewater treatment, please refer to Figure 1-Figure 5 , provide the following preferred technical solutions:

[0035] The material-push member 5 includes a fixed seat 51 fixedly connected to the outer wall of the rotating shaft 3 and a spring rod 52 movably connected to the side wall between the bottom protrusions at the end of the fixed seat 51. The fixed seat 51 is evenly distributed in a ring shape on the outer wall of the rotating shaft 3 above each layer of the evaporation plate 4. A pushing rod 53 is fixedly connected to the bottom of the spring rod 52. The discharge port 34 is arranged corresponding to the pushing rod 53. The lower end of the pushing rod 53 is arranged in contact with the oblique inner wall of the groove in the evaporation plate 4. A return spring 54 is fixedly connected between the fixed end of the spring rod 52 and the side wall of the rotating shaft 3. A counterweight block 55 is fixedly connected to the side wall of the movable end of the spring rod 52 adjacent to the top of the pushing rod 53. An auxiliary lever 56 is fixedly connected to the outer wall of one end of the pushing rod 53. A limiting protrusion 45 is fixedly connected to the oblique bottom wall of the groove in the evaporation plate 4 corresponding to the auxiliary lever 56.

[0036] The rotating shaft 3 includes an insulating sleeve 31 and a conductive cylinder 32 embedded in the side wall of the insulating sleeve 31. A conductive ring 8 is fixedly connected to the top of the gear box 7. The conductive ring 8 is movably sleeved on the outside of the conductive cylinder 32. A conductive cable 81 is fixedly connected to a connection point at one end of the conductive ring 8. Annular openings 33 are evenly spaced on the outer wall of the insulating sleeve 31 in the concentrated evaporator tank 1. The evaporation plate 4 is fixedly sleeved in the annular opening 33. A discharge port 34 is set through the insulating sleeve 31 and the conductive cylinder 32.

[0037] The evaporating plate 4 includes a protective shell 41 and an annular conductive seat 42 fixedly connected to the upper end of the bottom plate at the middle hole of the protective shell 41. Fixed columns 43 are evenly spaced and fixedly connected to the bottom plate of the protective shell 41 outside the annular conductive seat 42. An electric heating plate 44 is fixedly connected to the top of the fixed column 43. The conductive contact at the lower end of the electric heating plate 44 is fixedly connected to the annular conductive seat 42. An annular head is provided on the inner wall of the middle hole of the annular conductive seat 42. When the electric heating plate 44 and the protective shell 41 are fixedly clamped on the outer wall of the insulating sleeve 31, the annular head is clamped in the annular opening 33 and is arranged in contact with the outer wall of the conductive tube 32. The limiting protrusions 45 are fixedly distributed on the top of the inclined bottom plate of the electric heating plate 44.

[0038] Specifically, the starting motor drives the rotating shaft 3 to rotate in the inner cylinder body by means of the bevel gear set 71. Due to the centrifugal force of the rotation, the counterweight block 55 drives the movable end of the spring rod 52 to deflect upward and stretch and extend by gravity, so that the push rod 53 at the end of the spring rod 52 slides to the edge of the inclined bottom plate of the electric heating plate 44, thereby releasing the restriction of the spring rod 52 on the movable seal 9, so that the movable seal 9 blocks the sealing discharge port 34. At this time, the wastewater inlet pipe 12 and the dosing pipe 13 are controlled to simultaneously draw high-salt wastewater and treatment liquid into the sedimentation cylinder 62. After the high-salt wastewater is treated with drugs and precipitated in the sedimentation cylinder 62, the wastewater enters the filter through overflow. The filtered wastewater falls into the uppermost electric heating plate 44, and is gradually transferred to the lower electric heating plate 44, and finally deposited on the lowermost electric heating plate 44. At this time, the conductive cable 81 supplies power to the conductive ring 8, and the conductive ring 8 is in contact with the conductive cylinder 32 inside the side wall of the insulating sleeve 31 for conduction, and is connected to the electric heating plate 44 above the bottom plate of the protective shell 41 through the annular conductive seat 42. The multiple electric heating plates 44 on the outer wall of the rotating shaft 3 are electrically heated and evaporated at different water depths at the same time, and the inclined and stretched spring rod 52 is used to fit the top of the electric heating plate 44 to stir the wastewater, so as to promote the uniform and rapid evaporation of the high-salinity wastewater. The salt crystals attached to the surface of the electric heating plate 44 are stirred and dispersed when the push rod 53 slides against the inclined bottom plate of the electric heating plate 44, and the auxiliary lever 56 slides from one side of the limiting protrusion 45 on the inclined bottom plate of the electric heating plate 44 to cause elastic deformation. The auxiliary lever 56 is changed, and vibration is generated when it falls again to fit the inclined bottom plate of the electric heating plate 44, thereby dispersing and crushing the salt crystals on the inclined bottom plate of the electric heating plate 44, so that the electric heating plate 44 can quickly dry and evaporate the residual moisture in all the salt crystals. After drying, the rotation of the rotating shaft 3 is stopped, and the spring rod 52 is reset and pushes open the movable seal 9 under the pull of the reset spring 54, and the discharge port 34 is opened. The dried salt crystals slide into the discharge port 34 through the slope of the inclined bottom plate of the electric heating plate 44, and then slide down from the inner cavity of the insulating sleeve 31 of the rotating shaft 3, and are automatically discharged from the concentrated evaporation tank 1 to realize automatic collection of the salt crystals, which is convenient to use.

[0039] like Figure 4-Figure 8 As shown, in order to further enhance the removal efficiency of the residual water of the salt crystals on the top of the electric heating plate 44 and improve the drying effect of the salt crystals, this embodiment provides the following technical solutions:

[0040] The auxiliary lever 56 includes a fixed block 561 fixedly connected to the outer wall of one end of the push rod 53 and a vibration spring 562 fixedly connected to the outer wall of the end of the fixed block 561, a scraper strip 563 is fixedly connected to the end of the vibration spring 562, and a corrosion-resistant sheath 564 is fixedly connected between the scraper strip 563 and the side wall of the fixed block 561, and the corrosion-resistant sheath 564 is ringed on the outside of the vibration spring 562.

[0041] A mounting groove 565 is provided at the bottom edge of the outer wall on one side adjacent to the fixed end of the scraper strip 563, and mounting cavities 566 are evenly spaced inside the scraper strip 563 above the mounting groove 565. An elastic rope 567 is fixedly connected to the lower end of the top plate of the mounting cavity 566, and a T-bar 568 is fixedly connected to the bottom of the elastic rope 567. The lower end of the vertical rod of the T-bar 568 extends through the mounting groove 565, and a vibration ball 569 is placed on the top of the horizontal rod of the T-bar 568 in the mounting cavity 566.

[0042] Specifically, when the push rod 53 drives the auxiliary lever 56 to slide over the limiting protrusion 45, the scraper strip 563 slides from one side of the limiting protrusion 45 to the other side. When sliding over, due to the bending of the vibration spring 562, the scraper strip 563 falls from the top of the limiting protrusion 45 and fits the inclined bottom plate of the electric heating plate 44, causing vibration. The vibration drives the vibration ball 569 to drive the T-shaped rod 568 to vibrate in the installation cavity 566, thereby pushing the elastic rope 567 to stretch and reset back and forth up and down, so that the lower end of the T-shaped rod 568 moves back and forth in the installation groove 565. When the push rod 53 moves with the deflection of the spring rod 52 to scrape and crush the salt crystals, the salt crystals are impacted and crushed by the up and down movement of the T-shaped rod 568, so as to avoid the stratification after the salt crystals are precipitated and affect the drying and removal of residual moisture inside them.

[0043] like Figure 4 , Figure 6 and Figure 9-10 As shown, in order to realize the automatic collection of salt crystals precipitated in high-salinity wastewater, this embodiment provides the following technical solutions:

[0044] The movable sealing member 9 includes a movable rod 91 which is movably arranged on the side walls of the insulating sleeve 31 and the conductive tube 32. The end of the movable rod 91 extends through the insulating sleeve 31 to the outside and is arranged corresponding to the spring rod 52. The other end of the movable rod 91 in the inner cavity of the insulating sleeve 31 is fixedly connected to a fixed plate 92. The fixed plate 92 is suspended on the inner side of the output end of the discharge port 34. An elastic component 93 is fixedly connected between the fixed plate 92 and the inner wall of the insulating sleeve 31. The elastic component 93 surrounds the outside of the movable rod 91. A sealing sleeve 94 is fixedly connected to the outer wall of the fixed plate 92 close to the discharge port 34. When the elastic component 93 is kept in a normal relaxed state, the sealing sleeve 94 is engaged and sealed in the discharge port 34.

[0045] The sealing sleeve 94 is provided with a cavity inside, and a positioning shaft 941 is movably provided on the inner wall of the cavity near the fixed plate 92. The end of the positioning shaft 941 extends to the outside of the fixed plate 92, and the end of the positioning shaft 941 outside the fixed plate 92 is fixedly connected to a winding wheel 942. An adjustment rope 943 is wound on the outer wall of the winding wheel 942. The end of the adjustment rope 943 movably passes through the fixed plate 92 above the moving rod 91 and is fixedly connected to the inner wall of the insulating sleeve 31. The positioning shaft in the cavity Ears 944 are evenly spaced and fixedly connected to the outer wall of 941, and one end of a movable connecting rod 945 is movably sleeved on the outside of the ear 944. An annular groove is provided on the side wall of the sealing sleeve 94 outside the cavity. A T-type piston rod 946 is movably connected to the other end of the movable connecting rod 945. The end of the T-type piston rod 946 extends into the annular groove. An elastic membrane 947 is fixedly connected between the inner walls at the end of the annular groove. The annular groove between the elastic membrane 947 and the piston head of the T-type piston rod 946 is filled with a non-Newtonian fluid.

[0046] A mounting hole is provided on the outer wall of the end of the positioning shaft 941 in the cavity, and a spring is fixedly connected in the mounting hole. A convex rod is fixedly connected at the corresponding mounting hole on the inner wall of the cavity, and the end of the convex rod extends into the mounting hole, and the inner end of the spring is fixedly connected to the outer wall of the end of the convex rod. The hanging ears 944 are evenly distributed in a ring shape on the outer wall of the positioning shaft 941. When the piston head of the T-shaped piston rod 946 is located at the end of the annular groove away from the elastic membrane 947, the spring remains in a contracted state. At this time, the movable connecting rod 945 and the T-shaped piston rod 946 remain inclined; when the elastic component 93 cooperates with the fixing plate 92 to pull the sealing sleeve 94 to engage and seal in the discharge port 34, the adjusting rope 943 becomes loose, and the positioning shaft 941 is pushed by the contracted spring. The positioning shaft 941 rotates down for a certain angle, and the winding wheel 942 is driven by the positioning shaft 941 to reel in the slack adjusting rope 943. At the same time, the positioning shaft 941 drives the movable connecting rod 945 to deflect based on the hanging ear 944, so that it is in a straight line with the T-type piston rod 946. The movable connecting rod 945 pushes the T-type piston rod 946 to move toward the elastic membrane 947, and the piston head of the T-type piston rod 946 pushes the non-Newtonian fluid and the elastic membrane 947 in the annular groove to move toward the gap between the sealing sleeve 94 and the discharge port 34. The gap is further filled by the pushing and deformation of the non-Newtonian fluid and the elastic membrane 947, thereby further ensuring the sealing performance of the sealing sleeve 94 for the discharge port 34, thereby preventing high-salinity wastewater from leaking from the discharge port 34 during evaporation, concentration and crystallization.

[0047] Specifically, when the spring rod 52 is deflected away from the outer wall of the insulating sleeve 31 of the rotating shaft 3, the side wall of the sleeve at the fixed end of the spring rod 52 is separated from the moving rod 91, and the moving rod 91 is not restricted by the pressure, and the elastic component 93 maintains a normal relaxation state. The elastic component 93 cooperates with the fixed plate 92 to pull the sealing sleeve 94 to engage and seal in the discharge port 34. At this time, the waste water in the inner cylinder cannot enter the inner cavity of the insulating sleeve 31; on the contrary, after all the salt crystals are precipitated, the rotating shaft 3 stops rotating, and the spring rod 52 is pulled by the reset spring 54 and the gravity of the counterweight block 55. The spring rod 52 pushes the pushing rod 53 to scrape and crush the salt crystals on the top of the electric heating plate 44, and the spring rod 52 pushes and squeezes the moving rod 91. The moving rod 91 cooperates with the fixed plate 92 to move the sealing sleeve 94 to the axis of the insulating sleeve 31, and the sealing sleeve 94 is separated from the discharge port 34. The dried salt crystals slide into the discharge port 34 through the slope of the inclined bottom plate of the electric heating plate 44, and then slide down from the inner cavity of the insulating sleeve 31 of the rotating shaft 3 and are discharged from the concentration evaporation tank 1, thereby realizing the automatic collection of salt crystals precipitated in high-salt wastewater, which is convenient and practical.

[0048] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0049] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the invention, and the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A high-salt wastewater treatment device for lignite power generation based on concentration and separation, comprising a concentration evaporation tank (1) and a top cover (2) sealed on the top of the concentration evaporation tank (1), wherein a steam outlet pipe is arranged in the middle of the top cover (2), and characterized in that: A rotating shaft (3) is movably provided at the middle of the bottom plate of the concentrated evaporator (1). The rotating shaft (3) is a hollow structure with an opening at the lower end. A gear box (7) is fixedly connected to the lower end of the concentrated evaporator (1). The lower end of the rotating shaft (3) passes through the gear box (7) and extends below the gear box. A bevel gear set (71) is fixedly connected to the outer wall of the rotating shaft (3) in the gear box (7). A motor is fixedly connected to the bottom of the concentrated evaporator (1) on one side of the gear box (7). The output end of the motor is connected to the bevel gear set (71). 1), a plurality of evaporation plates (4) are evenly spaced on the outer wall of the rotating shaft (3) in the concentrated evaporation tank (1), a material shifting member (5) is fixedly connected to the outer wall of the rotating shaft (3) above the evaporation plates (4), a funnel-shaped inner groove is provided on the top of the evaporation plate (4), a material discharge port (34) is provided on the side wall of the rotating shaft (3) at the bottom plate of the inner groove of the evaporation plate (4), and a movable sealing member (9) is provided on the inner wall of the inner cavity of the rotating shaft (3) inside the material discharge port (34); The rotating shaft (3) comprises an insulating sleeve (31) and a conductive cylinder (32) embedded in the side wall of the insulating sleeve (31); a conductive ring (8) is fixedly connected to the top of the gear box (7); the conductive ring (8) is movably sleeved on the outside of the conductive cylinder (32); a conductive cable (81) is fixedly connected to a connection point at one end of the conductive ring (8); annular openings (33) are evenly spaced on the outer wall of the insulating sleeve (31) in the concentrated evaporator (1); an evaporation plate (4) is fixedly sleeved in the annular opening (33); and a discharge port (34) is provided through the insulating sleeve (31) and the conductive cylinder (32); The evaporation plate (4) comprises a protective shell (41) and an annular conductive seat (42) fixedly connected to the upper end of the bottom plate at the middle hole of the protective shell (41); fixed columns (43) are evenly spaced and fixedly connected to the bottom plate of the protective shell (41) outside the annular conductive seat (42); an electric heating plate (44) is fixedly connected to the top of the fixed column (43); a conductive contact at the lower end of the electric heating plate (44) is fixedly connected to the annular conductive seat (42); an annular head is provided on the inner wall of the middle hole of the annular conductive seat (42); when the electric heating plate (44) and the protective shell (41) are fixedly clamped on the outer wall of the insulating sleeve (31), the annular head is clamped in the annular opening (33) and is arranged in contact with the outer wall of the conductive tube (32); The material shifting member (5) comprises a fixed seat (51) fixedly connected to the outer wall of the rotating shaft (3) and a spring rod (52) movably connected to the side wall between the raised bottom ends of the fixed seat (51); the fixed seats (51) are evenly distributed in an annular shape on the outer wall of the rotating shaft (3) above each layer of the evaporation plate (4); a material pusher (53) is fixedly connected to the bottom of the spring rod (52); a material discharge port (34) is arranged corresponding to the material pusher (53); the lower end of the material pusher (53) is arranged to fit the oblique inner wall of the inner groove of the evaporation plate (4); a return spring (54) is fixedly connected between the fixed end of the spring rod (52) and the side wall of the rotating shaft (3); a counterweight (55) is fixedly connected to the side wall of the movable end of the spring rod (52) adjacent to the upper end of the material pusher (53); an auxiliary shifting rod (56) is fixedly connected to the outer wall of one end of the material pusher (53); and a limiting protrusion (45) is fixedly connected to the oblique bottom wall of the inner groove of the evaporation plate (4) corresponding to the auxiliary shifting rod (56); A water filter cartridge (6) is movably provided at the top of the rotating shaft (3), and fixing rods (61) are fixedly connected to the outer walls on both sides of the top of the water filter cartridge (6), and the top ends of the fixing rods (61) are fixedly connected to the outer walls of the bottom of the top cover (2) on both sides of the steam outlet port. A sedimentation cartridge (62) is fixedly connected to the middle of the upper end of the bottom plate of the water filter cartridge (6), and a transmission rod (63) is movably provided at the middle of the bottom plate of the sedimentation cartridge (62), and the lower end of the transmission rod (63) is fixedly connected to the top of the rotating shaft (3), and a stirring rod (64) is fixedly connected to the outer wall of the transmission rod (63); The movable sealing member (9) comprises a movable rod (91) which is movably arranged to penetrate the insulating sleeve (31) and the side wall of the conductive tube (32); the end of the movable rod (91) extends through the insulating sleeve (31) to the outside and is arranged corresponding to the spring rod (52); the other end of the movable rod (91) in the inner cavity of the insulating sleeve (31) is fixedly connected to a fixing plate (92); the fixing plate (92) is suspended on the inner side of the output end of the feed opening (34); an elastic component (93) is fixedly connected between the fixing plate (92) and the inner wall of the insulating sleeve (31); the elastic component (93) surrounds the outside of the movable rod (91); a sealing sleeve (94) is fixedly connected to the outer wall of the fixing plate (92) on the side close to the feed opening (34); when the elastic component (93) is kept in a normally relaxed state, the sealing sleeve (94) is engaged and sealed in the feed opening (34).

2. A high-salt wastewater treatment device for lignite power generation based on concentration and separation as claimed in claim 1, characterized in that: The auxiliary lever (56) comprises a fixed block (561) fixedly connected to the outer wall of one end of the push rod (53) and a vibration spring (562) fixedly connected to the outer wall of the end of the fixed block (561); a scraper strip (563) is fixedly connected to the end of the vibration spring (562); a corrosion-resistant sheath (564) is fixedly connected between the scraper strip (563) and the side wall of the fixed block (561); and the corrosion-resistant sheath (564) is sheathed on the outside of the vibration spring (562).

3. A high-salt wastewater treatment device for lignite power generation based on concentration and separation as claimed in claim 2, characterized in that: A mounting groove (565) is provided at the bottom edge of the outer wall adjacent to the fixed end of the scraper strip (563), and mounting cavities (566) are evenly spaced inside the scraper strip (563) above the mounting groove (565). An elastic rope (567) is fixedly connected to the lower end of the top plate of the mounting cavity (566), and a T-shaped rod (568) is fixedly connected to the bottom of the elastic rope (567). The lower end of the vertical rod of the T-shaped rod (568) extends through the mounting groove (565), and a vibration ball (569) is placed on the top of the horizontal rod of the T-shaped rod (568) in the mounting cavity (566).

4. A high-salt wastewater treatment device for lignite power generation based on concentration and separation as claimed in claim 3, characterized in that: A cavity is provided inside the sealing sleeve (94), and a positioning shaft (941) is movably provided on the inner wall of the cavity near the fixed plate (92), and the end of the positioning shaft (941) extends through the outside of the fixed plate (92), and a winding wheel (942) is fixedly connected to the end of the positioning shaft (941) outside the fixed plate (92), and an adjustment rope (943) is wound on the outer wall of the winding wheel (942), and the end of the adjustment rope (943) movably passes through the fixed plate (92) above the moving rod (91) and is fixedly connected to the inner wall of the insulating sleeve (31). The outer wall of the positioning shaft (941) is evenly spaced and fixedly connected with hanging ears (944), and one end of a movable connecting rod (945) is movably sleeved on the outer side of the hanging ears (944). An annular groove is provided on the side wall of the sealing sleeve (94) outside the cavity. The other end of the movable connecting rod (945) is movably connected with a T-shaped piston rod (946). The end of the T-shaped piston rod (946) extends into the annular groove. An elastic membrane (947) is fixedly connected between the inner walls at the end of the annular groove. The annular groove between the elastic membrane (947) and the piston head of the T-shaped piston rod (946) is filled with a non-Newtonian fluid.

5. A high-salt wastewater treatment device for lignite power generation based on concentration and separation as claimed in claim 4, characterized in that: A mounting hole is provided on the outer wall of the end of the positioning shaft (941) in the cavity, a spring is fixedly connected in the mounting hole, a convex rod is fixedly connected at the corresponding mounting hole on the inner wall of the cavity, the end of the convex rod extends into the mounting hole, the inner end of the spring is fixedly connected to the outer wall of the end of the convex rod, the ears (944) are evenly distributed on the outer wall of the positioning shaft (941) in a ring shape, and when the piston head of the T-shaped piston rod (946) is located at the end of the annular groove away from the elastic membrane (947), the spring remains in a contracted state, and at this time, the movable connecting rod (945) and the T-shaped piston rod (946) remain inclined.

6. A high-salt wastewater treatment device for lignite power generation based on concentration and separation as claimed in claim 5, characterized in that: The concentration evaporation tank (1) comprises an inner cylinder and an outer cylinder sleeved on the outer wall of the inner cylinder, the inner cylinder and the outer cylinder are coaxially arranged, a circulating cooling chamber (11) is arranged between the inner cylinder and the outer cylinder, a cold water outlet pipe and a cold water inlet pipe are fixedly connected to one side of the outer wall of the outer cylinder from top to bottom, a wastewater inlet pipe (12) and a dosing pipe (13) are fixedly connected to the side walls of the outer cylinder on both sides of the cold water inlet pipe, respectively, the outlet ends of the wastewater inlet pipe (12) and the dosing pipe (13) both penetrate the side wall at the top port of the sedimentation cylinder (62) and extend to the inside thereof, a sludge extraction pipe (14) is fixedly connected to the outer wall at the bottom of the sedimentation cylinder (62), the outlet end of the sludge extraction pipe (14) penetrates the side walls of the inner cylinder and the outer cylinder in sequence and extends to the outside of the outer cylinder.

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