CN113562798B

CN113562798B - High-salinity wastewater treatment equipment and sewage treatment method

Info

Publication number: CN113562798B
Application number: CN202111005569.3A
Authority: CN
Inventors: 郑国华
Original assignee: Guangdong Gangrong Water Technology Co ltd
Current assignee: Guangdong Gangrong Water Technology Co ltd
Priority date: 2021-08-30
Filing date: 2021-08-30
Publication date: 2022-03-11
Anticipated expiration: 2041-08-30
Also published as: CN113562798A

Abstract

The invention discloses high-salinity wastewater treatment equipment and a sewage treatment method, wherein the high-salinity wastewater treatment equipment comprises a plurality of heat exchange pipe units arranged in a shell, a steam inlet and a steam outlet are respectively arranged on the shell, a spray pipe is arranged in the top of the shell, a movable supporting mechanism is movably arranged in the shell, an accommodating cavity is arranged on the side wall of the shell, a rotary driving mechanism is arranged in the accommodating cavity, an external cleaning mechanism is sleeved on the outer wall of each heat exchange pipe, a first driving mechanism is arranged in the shell, a stirring mechanism is arranged on the first driving mechanism, an internal cleaning mechanism is arranged in each heat exchange pipe, a second driving mechanism is arranged in each heat exchange pipe, and a linkage mechanism is arranged at one end of the shell. The invention has simple structure, and can effectively remove the crystallization on the surface of the heat exchange tube and remove the scale on the inner wall of the heat exchange tube, thereby effectively ensuring the heat exchange efficiency of the heat exchange tube and improving the evaporation efficiency of the high-salinity wastewater.

Description

High-salinity wastewater treatment equipment and sewage treatment method

Technical Field

The invention relates to high-salinity wastewater treatment equipment and further relates to a sewage treatment method based on the high-salinity wastewater treatment equipment.

Background

With the rapid development of the industry in China, more and more high-salinity wastewater is generated in the daily production of the petroleum, chemical, metallurgy and electric power industries, in many places such as coal chemical industry parks in northern areas, evaporation ponds and the like are built for temporary storage in order to accommodate the wastewater, but with the lapse of time, many evaporation ponds are full and are ill, and new high-salinity water cannot be continuously received. At present, the treatment of the salt-containing wastewater mainly comprises evaporation and membrane treatment technologies, wherein the evaporation technologies comprise multi-effect evaporation MED, multi-stage flash evaporation MSF, vapor compression condensation VC and mechanical compression MVR. Membrane techniques such as membrane distillation, forward osmosis techniques, and the like.

For example, the application and development direction of the 18 th-stage evaporation desalination technology in industrial wastewater in Guangdong chemical industry 2013 introduce the wastewater treatment systems and devices. Although certain effect is obtained in the aspect of salt-containing wastewater treatment, the evaporation equipment is easy to form crystals on the surface of the heat exchange tube in the using process after high-salt wastewater is heated and gasified, so that scales are formed, the heat conduction performance of the heat exchange tube is influenced, the evaporation efficiency is reduced, and in addition, scales are also formed on the inner wall of the heat exchange tube in the heat exchange process of water vapor and the heat exchange tube, so that the heat exchange efficiency is reduced.

Therefore, the existing high-salinity wastewater treatment equipment is to be further perfected.

Disclosure of Invention

The invention aims to overcome the defects in the prior art and provide the high-salinity wastewater treatment equipment which is simple in structure and can effectively remove crystals on the surface of the heat exchange tube and scale on the inner wall of the heat exchange tube, thereby effectively ensuring the heat exchange efficiency of the heat exchange tube and improving the evaporation efficiency of high-salinity wastewater.

The invention also aims to provide a sewage treatment method based on the high-salinity wastewater treatment equipment.

In order to achieve the above object, the present invention adopts the following scheme for a high-salinity wastewater treatment plant: a high-salinity wastewater treatment device comprises a shell, and is characterized in that a plurality of heat exchange tube units which are parallel to each other are arranged in the shell at intervals from top to bottom, a steam inlet and a steam outlet which can be communicated with the heat exchange tube units are respectively arranged on the shell, each heat exchange tube unit is respectively formed by a plurality of heat exchange tubes which are uniformly distributed at intervals, a spray pipe is arranged in the top of the shell, a movable supporting mechanism which can support the heat exchange tube units is movably arranged in the shell, an accommodating cavity which can accommodate the movable supporting mechanism is arranged on the side wall of the shell, a rotary driving mechanism which can drive the movable supporting mechanism to rotate into or out of the accommodating cavity is arranged in the accommodating cavity, an external cleaning mechanism which can clean surface crystals of the heat exchange tubes is sleeved on the outer wall of the heat exchange tubes, and a first driving mechanism which can drive the external cleaning mechanism to move back and forth along the axis direction of the heat exchange tubes is arranged in the shell, the heat exchange tube is internally provided with a second driving mechanism which can drive the internal cleaning mechanism to move back and forth along the axis direction of the heat exchange tube when the heat exchange tube rotates, and one end of the shell is provided with a linkage mechanism which can drive the first driving mechanism to work and drive the heat exchange tube to rotate. According to the invention, the external cleaning mechanism can effectively clean the crystals outside the heat exchange tube, so that the evaporation efficiency of high-salt wastewater is effectively ensured, and the internal cleaning mechanism can effectively clean water scales on the inner wall of the heat exchange tube, so that the heat exchange effect of the heat exchange tube is effectively ensured. When the external cleaning mechanism moves towards one end, the movable supporting mechanism can be extruded open in an extruding mode, and when the external cleaning mechanism moves towards the other end, the rotating driving mechanism can be driven by the stirring mechanism, so that the movable supporting mechanism is driven to rotate into the accommodating cavity, the external cleaning mechanism can be effectively ensured to pass through the accommodating cavity, and after the external cleaning mechanism passes through the accommodating cavity, the movable supporting mechanism can automatically reset to support the heat exchange pipe, so that the heat exchange pipe is prevented from being supported and deformed.

As another improvement of the high-salinity wastewater treatment equipment, a plurality of heat conduction convex ribs are uniformly distributed on the outer wall of the heat exchange tube, and heat conduction grooves communicated with the inner cavity of the heat exchange tube are arranged in the heat conduction convex ribs. According to the invention, the heat exchange area of the heat exchange tube and the utilization rate of water vapor are effectively increased by arranging the heat conduction convex ribs on the heat exchange tube, and the treatment efficiency of high-salinity wastewater is improved.

As another improvement of the high-salinity wastewater treatment equipment, the movable support mechanism comprises a rotating shaft movably arranged on one side of the accommodating cavity, an arc-shaped seat is arranged in the middle of the rotating shaft, and a plurality of support plates capable of supporting the heat exchange tubes are arranged on the arc-shaped seat at intervals. In an initial state, the support plate of the movable support mechanism of the invention is propped against the lower end of the heat exchange tube, or the upper end surface and the lower end surface of the heat exchange tube are clamped, thereby effectively supporting the heat exchange tube. When the external cleaning mechanism passes through, the movable supporting mechanism is squeezed open or is driven by the rotary driving mechanism to be rotated into the accommodating cavity, at the moment, the external cleaning mechanism is sleeved on the outer wall of the heat exchange tube and can support the heat exchange tube, in other words, the heat exchange tube is in a supported state all the time, and therefore the heat exchange tube is effectively prevented from being deformed due to too long span.

As another improvement of the high-salinity wastewater treatment equipment, the rotary driving mechanism comprises a first driving gear movably arranged in the accommodating cavity, a first transmission gear is arranged on the rotary shaft and is meshed with the first driving gear, a driving rack is movably arranged in the accommodating cavity at one side of the first driving gear and is meshed with the first driving gear, a driving head matched with the shifting mechanism is arranged at one end of the driving rack far away from the rotary shaft, and inclined planes facilitating the shifting mechanism to be separated are arranged on the upper surfaces of the two ends of the driving head. According to the invention, the driving head is stirred by the stirring mechanism on the first driving mechanism when the driving head moves, the driving rack is driven to drive the first driving gear to rotate, and the rotating shaft is rotated through the first driving gear, so that the movable supporting mechanism is driven to rotate into the accommodating cavity, and the passage of an external cleaning mechanism is guaranteed. And after the external cleaning mechanism passes through, the movable supporting mechanism can automatically reset and support the heat exchange pipe again, so that the heat exchange pipe is safe and reliable.

As another improvement of the high-salinity wastewater treatment equipment, the poking mechanism comprises a poking seat connected to the first driving mechanism, a waist-shaped hole is formed in the poking seat in the vertical direction, a sliding shaft is movably arranged in the waist-shaped hole, a poking rod is arranged on the sliding shaft, an elastic mechanism capable of driving the poking rod to press downwards is arranged in the poking seat, a sliding wheel is arranged at the outer end of the poking rod, and a guide seat capable of driving the poking rod to move upwards so as to drive the poking rod to be separated from the driving head is arranged in the accommodating cavity and corresponds to the sliding wheel. According to the invention, the toggle mechanism moves synchronously with the first driving mechanism, under the action of the elastic mechanism, the sliding shaft is positioned at the lowest end of the waist-shaped hole, namely, the toggle rod is positioned at the lowest part at the moment, when the toggle rod is contacted with the driving head, the driving rack is moved forwards for a certain distance, then the sliding wheel on the outer end of the toggle rod enters the guide seat, and under the action of the guide seat, the sliding wheel is driven to drive the toggle rod to move upwards, the toggle rod moves forwards simultaneously in the upwards moving process, slides out on the inclined surface of the driving head, and is separated from the driving head, so that the first driving mechanism can continue to move forwards, and meanwhile, the movable supporting mechanism can not rotate excessively.

As another improvement of the high-salinity wastewater treatment equipment, the external cleaning mechanism comprises a sliding seat, a mounting hole is formed in the position, corresponding to the heat exchange tube, of the sliding seat, a cleaning sleeve is movably arranged in the mounting hole, and the cleaning sleeve is movably sleeved on the heat exchange tube. According to the invention, the cleaning sleeve rotates in the mounting hole, so that the sliding seat can linearly move back and forth along the axis direction of the heat exchange tube while the heat exchange tube is ensured to rotate.

As another improvement of the high-salinity wastewater treatment equipment, the first driving mechanism comprises a first reciprocating screw rod arranged in the bottom of the shell, a first screw rod sleeve is sleeved on the first reciprocating screw rod, an installation groove is formed in the first screw rod sleeve, the sliding seat is arranged in the installation groove, and the shifting mechanism is arranged on one side of the first screw rod sleeve. According to the invention, the first reciprocating screw rod can rotate to drive the first screw rod sleeve to drive the sliding seat to move back and forth along the axial direction of the heat exchange tube. And the crystals falling into the bottom of the shell can be scraped into the sewage outlet in the process of moving the sliding seat back and forth.

As another improvement of the high-salinity wastewater treatment equipment, the internal cleaning mechanism comprises a second screw rod sleeve movably arranged in the heat exchange pipe, a cleaning plate is arranged on the outer wall of the second screw rod sleeve, the second screw rod sleeve is movably arranged on a second driving mechanism, the second driving mechanism comprises a second reciprocating screw rod arranged in the heat exchange pipe, the second screw rod sleeve is movably arranged on the second reciprocating screw rod, a second transmission gear is arranged at one end of the second reciprocating screw rod, annular inner teeth are arranged on the inner wall of the corresponding end of the heat exchange pipe and the second transmission gear, a third transmission gear is meshed between the annular inner teeth and the second transmission gear, and the third transmission gear is movably arranged on the shell through a gear shaft. When the heat exchange tube is driven by the linkage mechanism to rotate, the annular inner teeth drive the third transmission gear to rotate, drive the second transmission gear to drive the second reciprocating screw rod to rotate, and drive the second screw rod sleeve and the cleaning plate to move back and forth in the heat exchange tube along the axis direction, so that scale on the inner wall of the heat exchange tube is cleaned. After the water scale is scraped, because the through hole is arranged in the second screw rod sleeve, one part of the water scale can be discharged along with flowing water vapor, and the other part of the water scale can be extruded out of the heat exchange tube by the second screw rod sleeve and the cleaning plate.

As another improvement of the high-salinity wastewater treatment equipment, the linkage mechanism comprises a driving motor fixedly arranged in one end of the shell, the first driving mechanism is connected with the driving motor, a second driving gear is arranged at one end of the first driving mechanism, a fourth transmission gear is arranged on the heat exchange tube at the end corresponding to the second driving gear, a transverse transmission toothed belt is sleeved on the fourth transmission gear of each heat exchange tube unit, and a vertical transmission toothed belt is sleeved on the second driving gear and the fourth transmission gear on the same vertical line with the second driving gear. According to the invention, the first driving mechanism and the heat exchange tube can be driven simultaneously by one driving motor, so that the second driving mechanism is driven simultaneously, the structure is simple, and the cost is effectively saved.

The invention relates to a sewage treatment method based on the high-salinity wastewater treatment equipment, which is characterized by comprising the following steps of:

s1, inputting steam to the steam inlet to heat the heat exchange tube;

s2, pumping the high-salinity wastewater to a spray pipe to spray the high-salinity wastewater downwards from the uppermost layer of the heat exchange pipe;

s3, controlling the linkage mechanism to enable the heat exchange tube to rotate, enabling high-salinity wastewater to form a liquid film on the surface of the heat exchange tube, heating the liquid film through the heat exchange tube to form water vapor, driving the second driving mechanism to drive the internal cleaning mechanism to clean water scales on the inner wall of the heat exchange tube, and discharging the water scales through the steam outlet;

the control linkage mechanism drives the first driving mechanism to drive the external cleaning mechanism to move back and forth along the axial direction of the heat exchange tube so as to clean crystals on the surface of the heat exchange tube; the movable supporting mechanism is squeezed open in the moving process or the rotating driving mechanism is driven by the toggle mechanism to drive the movable supporting mechanism to transfer the accommodating cavity;

s4, controlling the steam outlet to be opened, and sending the water steam in the shell to the condenser from the steam outlet;

and S5, controlling a sewage outlet arranged at the lower part of the shell, and discharging the crystal falling off from the inside of the shell.

The sewage treatment method can clean crystals on the heat exchange pipe in time, ensure the evaporation efficiency of the waste water, and simultaneously clean scales on the inner wall of the heat exchange pipe in time, and ensure the heat exchange efficiency of the heat exchange pipe. Thereby improving the treatment efficiency of the wastewater.

In summary, compared with the prior art, the invention has the beneficial effects that: the high-salinity wastewater treatment equipment has a simple structure, is convenient to use, and the sewage treatment method has a simple process and is convenient to operate; the crystallization on the heat exchange tube can be cleaned in time, the evaporation efficiency of the waste water is ensured, the incrustation scale on the inner wall of the heat exchange tube can be cleaned in time, and the heat exchange efficiency of the heat exchange tube is ensured. Thereby improving the treatment efficiency of the wastewater.

Drawings

Fig. 1 is a perspective view of the present invention.

Fig. 2 is a second perspective view of the present invention.

Fig. 3 is an enlarged schematic view of a point a in fig. 2.

Fig. 4 is a partial cross-sectional view of the present invention.

FIGS. 5-7 are schematic views illustrating the movement of the internal cleaning mechanism to the left according to the present invention;

fig. 8 is a schematic view of a heat exchange tube unit of the present invention.

Fig. 9 is an enlarged view at B in fig. 8.

Fig. 10 is a side view of the present invention.

Fig. 11 is a schematic cross-sectional view taken at C-C in fig. 9.

Fig. 12 is a side schematic view of a heat exchange tube of the present invention.

FIG. 13 is a schematic view of the right end cap of the present invention.

Fig. 14 is a schematic view of a toggle mechanism of the present invention.

In the figure: 1. a housing; 2. a movable support mechanism; 3. a rotation driving mechanism; 4. an external cleaning mechanism; 41. a sliding seat; 42. mounting holes; 43. cleaning the sleeve; 5. a first drive mechanism; 51. a first reciprocating screw rod; 52. a first screw rod sleeve; 53. mounting grooves; 6. a toggle mechanism; 61. a dial seat; 62. a kidney-shaped hole; 63. a sliding shaft; 64. a poke rod; 65. an elastic mechanism; 66. a sliding wheel; 67. a guide seat; 68. a guide bar; 69. a guide hole groove; 610. a compression spring; 7. an internal cleaning mechanism; 71. a second screw rod sleeve; 72. cleaning the plate; 8. a second drive mechanism; 82. a second reciprocating screw rod; 83. a second transmission gear; 84. a third transmission gear; 85. a third transmission gear; 9. a linkage mechanism; 91. a drive motor; 92. a second drive gear; 93. a fourth transmission gear; 94. a transverse drive toothed belt; 95. a vertical drive toothed belt; 10. a heat exchange pipe unit; 11. a steam inlet; 12. a steam outlet; 13. a heat exchange pipe; 14. a shower pipe; 15. an accommodating cavity; 16. heat conducting convex ribs; 17. a heat conducting groove; 18. a steam outlet; 19. a sewage draining outlet; 20. a return spring; 21. a rotating shaft; 22. an arc-shaped seat; 23. a support plate; 31. a first drive gear; 32. a first drive gear; 33. a drive rack; 34. a drive head; 35. a bevel; 101. a right end cap; 102. a partition plate; 103. a right end plate; 104. a left end plate; 105. a left end cap; 106. a convex shell; 107. a left fixed support plate; 108. a right fixed support plate; 151. a limiting block; 221. assembling a seat; 331. a sliding groove.

Detailed Description

The above and further features and advantages of the present invention are described in more detail below with reference to the accompanying drawings.

Preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only for explaining the technical principle of the present invention, and do not limit the scope of the present invention.

It should be noted that in the description of the present invention, the terms of direction or positional relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, which are only for convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

Furthermore, it should be noted that, in the description of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

As shown in fig. 1 to 14, a high salinity wastewater treatment device comprises a shell 1, wherein the shell 1 can be of an upper-lower structure or an integral structure, and when the shell is of the upper-lower structure, the shell is composed of an upper shell and a lower shell, and when the shell is of the integral structure, the shell comprises a hollow round tubular shell, and end plates and end covers are arranged on openings at two ends of the shell; a plurality of heat exchange tube units 10 which are parallel to each other are arranged in the shell 1 from top to bottom at intervals, the heat exchange tube units 10 are all arranged in the horizontal direction, a steam inlet 11 and a steam outlet 12 which can be communicated with the heat exchange tube units 10 are respectively arranged on the shell 1, a partition plate 102 is arranged in a right end cover 101 of the shell 1, the steam inlet 11 is arranged on the right end cover 101 above the partition plate 102, the steam outlet 12 is arranged on the right end cover 101 below the partition plate 102, the right end of the heat exchange tube unit 10 at the upper part of the shell 1 extends into an upper cavity defined by a right end plate 103 of the shell 1, the upper end surface of the partition plate 102 and the right end cover 101, the right end of the heat exchange tube unit 10 at the lower part of the shell 1 extends into a lower cavity defined by the right end plate 103 of the shell 1, the lower end surface of the partition plate 102 and the right end cover 101, and the left end of the heat exchange tube unit 10 passes through a left end plate 104 of the shell 1, into the left end cap 105; the water vapor enters from the steam inlet 11, enters the left end cover 105 through the heat exchange tube unit 10 at the upper part of the shell 1, then rotates back to the lower cavity through the heat exchange tube unit 10 at the lower part of the shell 1, and then is sent out through the steam outlet 12; thereby forming a U-shaped steam channel, effectively increasing the stroke of the steam and improving the heat exchange efficiency. Each heat exchange tube unit 10 is respectively formed by a plurality of heat exchange tubes 13 which are uniformly distributed at intervals, the number of the heat exchange tubes 13 in each layer of heat exchange tube unit 10 can be changed according to the shape of the inner wall of the shell 1, for example, when the shell 1 is in a round tube shape, the number of the heat exchange tube units 10 at the upper part and the number of the heat exchange tube units 10 at the lower part are less than that of the heat exchange tube units 10 at the middle part, one arrangement mode of the heat exchange tubes 13 is that as shown in fig. 8, seven layers are arranged from top to bottom, the number of the first layer and the seventh layer of heat exchange tubes 13 is the same, the number of the second layer and the sixth layer of heat exchange tubes 13 is the same, the number of the third layer to the fifth layer of heat exchange tubes 13 is the same, and the number of the first layer, the second layer and the third layer of heat exchange tubes 13 is sequentially increased. When the shape of the case 1 is a rectangular parallelepiped, the number of the heat exchange tubes 13 of each layer may be the same. According to the invention, a spray pipe 14 is arranged in the top of a shell 1, the spray pipe 14 is used for spraying high-salt wastewater to the surfaces of heat exchange pipe units 10, spray nozzles are uniformly distributed at the lower end of the spray pipe 14, so that the high-salt wastewater can be sprayed to the surface of each heat exchange pipe unit 10 on the upper part, movable supporting mechanisms 2 capable of supporting a plurality of heat exchange pipe units 10 are movably arranged in the shell 1, and accommodating cavities 15 capable of accommodating the movable supporting mechanisms 2 are arranged on the side wall of the shell 1. The stroke of the movable supporting mechanism 2 can be effectively reduced and the volume of the accommodating cavity 15 on one side of the shell 1 can be reduced. The invention is provided with a rotary driving mechanism 3 which drives the movable supporting mechanism 2 to rotate into or out of the accommodating cavity 15 in the accommodating cavity 15, the outer wall of the heat exchange tube 13 is sleeved with an external cleaning mechanism 4 which can clean the surface crystallization of the heat exchange tube 13, a first driving mechanism 5 which can drive the external cleaning mechanism 4 to move back and forth along the axial direction of the heat exchange tube 13 is arranged in the shell 1, a toggle mechanism 6 which can drive the rotary driving mechanism 3 to work is arranged on the first driving mechanism 5, an internal cleaning mechanism 7 which can clean the inner wall of the heat exchange pipe 13 is arranged in the heat exchange pipe 13, a second driving mechanism 8 which can drive the internal cleaning mechanism 7 to move back and forth along the axial direction of the heat exchange tube 13 when the heat exchange tube 13 rotates is arranged in the heat exchange tube 13, and a linkage mechanism 9 which can drive the first driving mechanism 5 to work and drive the heat exchange tube 13 to rotate is arranged at one end of the shell 1. In the initial state of the invention, the movable supporting mechanism 2 is propped against the lower end of the heat exchange tube 13, or the upper end surface and the lower end surface of the heat exchange tube 13 are clamped, thereby effectively supporting the heat exchange tube 13. When the linkage mechanism 9 drives the first driving mechanism 5 to drive the external cleaning mechanism 4 to move towards the left side to clean the surface of the heat exchange tube 13, when the toggle mechanism 6 touches the rotary driving mechanism, the movable supporting mechanism 2 is firstly driven to rotate into the accommodating cavity 15, and after the external cleaning mechanism 4 passes through, the rotary driving mechanism automatically resets to drive the movable supporting mechanism 2 to reset to support the heat exchange tube 13; when the external cleaning mechanism 4 moves rightwards, the external cleaning mechanism 4 extrudes the movable supporting mechanism 2 to enable the movable supporting mechanism 2 to be separated from the heat exchange tube 13, and in the moving process of the external cleaning mechanism 4, the movable supporting mechanism 2 is rotated into the accommodating cavity 15, so that the external cleaning mechanism 4 can be ensured to smoothly pass through, and the external cleaning mechanism 4 is sleeved on the outer wall of the heat exchange tube 13 and can support the heat exchange tube 13, in other words, the heat exchange tube 13 is in a supported state from beginning to end, so that the heat exchange tube 13 is effectively ensured not to deform due to too long span. According to the invention, when the external cleaning mechanism 4 moves, the linkage mechanism 9 drives the heat exchange tube 13 to rotate, so that the second driving mechanism 8 is driven to drive the internal cleaning mechanism 7 to move in the heat exchange tube 13, crystals outside the heat exchange tube can be effectively cleaned through the external cleaning mechanism, so that the evaporation efficiency of high-salt wastewater is effectively ensured, and scales on the inner wall of the heat exchange tube can be effectively cleaned through the internal cleaning mechanism, so that the heat exchange effect of the heat exchange tube is effectively ensured.

In the invention, a plurality of heat conduction convex ribs 16 are uniformly distributed on the outer wall of the heat exchange tube 13, and heat conduction grooves 17 communicated with the inner cavity of the heat exchange tube 13 are arranged in the heat conduction convex ribs 16. In the invention, the heat exchange tube 13 is a round tube-shaped heat exchange tube, the heat conduction convex ribs 16 are long-strip-shaped heat conduction convex ribs, the length of the heat conduction convex ribs 16 is less than that of the heat exchange tube 13, and the heat conduction convex ribs 16 are uniformly distributed on the middle part of the heat exchange tube 13, because the two ends of the heat exchange tube 13 are both round tubes, the heat exchange tube can smoothly rotate in the assembly hole of the left end plate 104 and the assembly hole of the right end plate 103, or bearings can be respectively arranged in the assembly holes, and the two ends of the heat exchange tube 13 are respectively arranged in the corresponding bearings. In order to form a liquid film on the surface of the heat exchange tube 13 naturally in the prior art, the heat exchange tube 13 can only be arranged in a round tube shape generally, but the heat exchange area of the round tube-shaped heat exchanger is limited to the surface of the round tube, and in the technical scheme of the invention, the heat conduction convex rib 16 is arranged on the heat exchange tube 13, and the heat exchange tube 13 is driven to rotate by the linkage mechanism 9, so that the liquid film can be effectively formed on the surfaces of the heat exchange tube 13 and the heat conduction convex rib 16 by the high-salinity wastewater, the heat exchange area of the heat exchange tube 13 and the utilization rate of water vapor are effectively increased, and the treatment efficiency of the high-salinity wastewater is improved.

The movable support mechanism 2 comprises a rotating shaft 21 movably arranged on one side of the accommodating cavity 15, an arc-shaped seat 22 is arranged in the middle of the rotating shaft 21, and a plurality of support plates 23 capable of supporting the heat exchange tubes 13 are arranged on the arc-shaped seat 22 at intervals. In the invention, the assembly seat 221 is arranged on the outer side of the middle part of the arc seat 22, the rotating shaft 21 is arranged in the assembly seat 221, and the assembly seat 221 synchronously rotates along with the rotating shaft 21; in the invention, the middle part of the shell 1 is provided with an outer convex shell 106, the accommodating cavity 15 is arranged in the outer convex shell 106, round shaft holes are symmetrically arranged on the upper end surface and the lower end surface of the outer convex shell 106, and two ends of the rotating shaft 21 are respectively and movably arranged in the corresponding round shaft holes. In the invention, the rotating shaft 21 is arranged on one side of the accommodating cavity 15, so that the arc-shaped seat 22 can be limited to move only into the accommodating cavity 15, in fact, in the technical scheme of the invention, when the external cleaning mechanism 4 moves to the left side, the movable supporting mechanism 2 rotates rightwards under the action of the toggle mechanism 6 and the rotary driving mechanism 3 and is turned into the accommodating cavity 15; when the external cleaning mechanism 4 moves rightwards, the external cleaning mechanism 4 extrudes the movable supporting mechanism 2, so that the movable supporting mechanism 2 rotates rightwards and is transferred into the accommodating cavity 15; in the invention, the movable supporting mechanism 2 only moves towards the right side, in other words, only one accommodating cavity 15 is needed in the same side of the shell 1 to realize the storage of the movable supporting mechanism 2, thereby effectively reducing the volume of the shell 1 on the same side.

In the initial state of the invention, the support plate 23 of the movable support mechanism 2 is abutted against the lower end of the heat exchange tube 13, or the upper end surface and the lower end surface of the heat exchange tube 13 are clamped, thereby effectively supporting the heat exchange tube 13. When the external cleaning mechanism 4 passes through, the movable supporting mechanism 2 is squeezed open or is driven by the rotary driving mechanism 3 to be rotated into the accommodating cavity 15, at the moment, the external cleaning mechanism 4 is sleeved on the outer wall of the heat exchange tube 13 and can support the heat exchange tube 13, in other words, the heat exchange tube 13 is in a supported state from beginning to end, and therefore the heat exchange tube 13 is effectively prevented from being deformed due to too long span.

The rotary driving mechanism 3 comprises a first driving gear 31 movably arranged in the accommodating cavity 15, a first transmission gear 32 is arranged on the rotating shaft 21, the first transmission gear 32 is meshed with the first driving gear 31, a driving rack 33 is movably arranged in the accommodating cavity 15 at one side of the first driving gear 31, the driving rack 33 is meshed with the first driving gear 31, a driving head 34 matched with the toggle mechanism 6 is arranged at one end of the driving rack 33 far away from the rotating shaft 21, and inclined planes 35 facilitating the disengagement of the toggle mechanism 6 are arranged on the upper surfaces of the two ends of the driving head 34. According to the invention, the toggle mechanism 6 on the first driving mechanism 5 toggles the driving head 34 when moving, the driving rack 33 is driven to drive the first driving gear 31 to rotate, the rotating shaft 21 is driven to rotate through the first transmission gear 32, and therefore the movable supporting mechanism 2 is driven to rotate into the accommodating cavity 15, and the passing of the external cleaning mechanism 4 is guaranteed. And after the external cleaning mechanism 4 passes through, the movable supporting mechanism 2 can automatically reset and support the heat exchange pipe 13 again, so that the device is safe and reliable.

According to the invention, the driving rack 33 is provided with the sliding groove 331, the accommodating cavity 15 is provided with the limiting block 151, the sliding groove 331 is sleeved on the outer wall of the limiting block 151, the return spring 20 is arranged between the right side of the limiting block 151 and the right side of the sliding groove 331, and after the toggle mechanism 6 is separated from the driving head 34, the driving rack 33 drives the first driving gear 31 to rotate reversely under the action of the return spring 20, so that the movable supporting mechanism 2 is driven to reset.

The toggle mechanism 6 comprises a toggle seat 61 connected to a first driving mechanism 5, a waist-shaped hole 62 is arranged on the toggle seat 61 along the vertical direction, a sliding shaft 63 is movably arranged in the waist-shaped hole 62, a toggle rod 64 is arranged on the sliding shaft 63, an elastic mechanism 65 capable of driving the toggle rod 64 to be pressed downwards is arranged in the toggle seat 61, a sliding wheel 66 is arranged at the outer end of the toggle rod 64, and a guide seat 67 capable of driving the toggle rod 64 to move upwards so as to drive the toggle rod 64 to be separated from the driving head 34 is arranged in the accommodating cavity 15 and at a position corresponding to the sliding wheel 66. According to the invention, waist-shaped holes 62 are symmetrically arranged on the left side and the right side of a toggle seat 61, an accommodating groove hole is formed in the toggle seat 61 between the two waist-shaped holes 62, one end of a toggle rod 64 provided with a sliding shaft 63 is movably arranged in the accommodating groove hole, an elastic mechanism 65 comprises a guide rod 68 arranged on the toggle seat 61 at the upper end of the accommodating groove hole, a guide hole groove 69 is formed in the position of the toggle rod 64 corresponding to the guide rod 68, the guide rod 68 is arranged in the guide hole groove 69, and an extrusion spring 610 is sleeved on the outer wall of the guide rod 68 between the upper end surface of the guide rod 68 and the toggle seat 61.

According to the invention, the toggle mechanism 6 moves synchronously with the first driving mechanism 5, under the action of the elastic mechanism 65, the sliding shaft 63 is positioned at the lowest end of the kidney-shaped hole 62, that is, the toggle rod 64 is positioned at the lowest part at the moment, when the toggle rod 64 is contacted with the driving head 34, the driving rack 33 is moved forward for a certain distance by the forerunner, then the sliding wheel 66 on the outer end of the toggle rod 64 enters the guide seat 67, and under the action of the guide seat 67, the sliding wheel 66 drives the toggle rod 64 to move upward, the upward movement process of the toggle rod 64 moves forward at the same time, slides out on the inclined surface of the driving head 34 and is separated from the driving head 34, so that the first driving mechanism 5 can continue to move forward, and meanwhile, the movable supporting mechanism 2 is ensured not to rotate excessively.

The external cleaning mechanism 4 comprises a sliding seat 41, a mounting hole 42 is formed in the position, corresponding to the heat exchange tube 13, of the sliding seat 41, a cleaning sleeve 43 is movably arranged in the mounting hole 42, and the cleaning sleeve 43 is movably sleeved on the heat exchange tube 13. One embodiment of the sliding seat 41 of the present invention comprises a left sliding seat and a right sliding seat, which are connected by a bolt, the left sliding seat and the right sliding seat are respectively provided with a mounting hole 42 correspondingly, a left annular groove which can cover all the mounting holes 42 on the left sliding seat is arranged at the joint between the left sliding seat and the right sliding seat, a right annular groove is arranged at the corresponding position of the right sliding seat and the left annular groove, a limit ring is arranged at the middle part of the outer wall of the cleaning sleeve 43 and is arranged between the left annular groove and the right annular groove, so that the cleaning sleeve 43 can rotate in the mounting hole 42 without being separated from the sliding seat 41, and the heat exchange pipe 13 can be effectively ensured to rotate, the sliding seat 41 can linearly move back and forth along the axial direction of the heat exchange tube 13, and crystals on the surface of the heat exchange tube can be effectively removed through the cleaning sleeve 43 in the invention, so that the evaporation efficiency of high-salinity wastewater is ensured.

The first driving mechanism 5 of the present invention comprises a first reciprocating screw rod 51 arranged in the bottom of the housing 1, a first screw rod sleeve 52 is sleeved on the first reciprocating screw rod 51, an installation groove 53 is arranged on the first screw rod sleeve 52, the sliding seat 41 is arranged in the installation groove 53, and the toggle mechanism 6 is arranged on one side of the first screw rod sleeve 52.

In the invention, the first reciprocating screw 51 can rotate to drive the first screw sleeve 52 to drive the sliding seat 41 to move back and forth along the axial direction of the heat exchange tube 13. And the crystals falling into the bottom of the housing 1 can be scraped into the drain 19 during the forward and backward movement of the sliding seat 41.

The internal cleaning mechanism 7 comprises a second screw rod sleeve 71 movably arranged in a heat exchange tube 13, a cleaning plate 72 is arranged on the outer wall of the second screw rod sleeve 71, the second screw rod sleeve 71 is movably arranged on a second driving mechanism 8, the second driving mechanism 8 comprises a second reciprocating screw rod 82 arranged in the heat exchange tube 13, the second screw rod sleeve 71 is movably arranged on the second reciprocating screw rod 82, a second transmission gear 83 is arranged at one end of the second reciprocating screw rod 82, annular internal teeth 84 are arranged on the inner wall of the heat exchange tube 13 at the corresponding end of the second transmission gear 83, a third transmission gear 85 is meshed between the annular internal teeth 84 and the second transmission gear 83, and the third transmission gear 85 is movably arranged on a shell 1 through a gear shaft.

The left end of the heat exchange tube 13 in the invention is connected with the linkage mechanism 9 after passing through the left end plate 104. According to the invention, the annular internal teeth 84, the second transmission gear 83 and the third transmission gear 85 are all positioned in a left end cover 105 on the left side of a left end plate 104, a left fixed supporting plate 107 is arranged in the left end cover 105, an axial hole is arranged at the position of the left fixed supporting plate 107 corresponding to the second reciprocating screw rod 82, the left end of the second reciprocating screw rod 82 is movably arranged in the axial hole, and the gear shaft is fixedly arranged on the left fixed supporting plate 107. A right fixed support plate 108 is arranged in the right end cover 101, an axial hole is formed in the position, corresponding to the second reciprocating screw rod 82, of the right fixed support plate 108, the right end of the second reciprocating screw rod 82 is movably arranged in the axial hole, and two ends of the second reciprocating screw rod 82 respectively extend out of the end portion of the heat exchange tube 13. In the present invention, air guide grooves are respectively formed at the upper and lower ends of the right fixed support plate 108, so that the steam inlet 11 and the steam outlet 12 can communicate with the right end of the heat exchange tube 13.

When the heat exchange tube 13 is driven by the linkage mechanism 9 to rotate, the annular internal teeth 84 drive the third transmission gear 85 to rotate, drive the second transmission gear 83 to drive the second reciprocating screw rod 82 to rotate, and drive the second screw rod sleeve 71 and the cleaning plate to move back and forth in the heat exchange tube 13 along the axial direction, so that scale on the inner wall of the heat exchange tube 13 is cleaned. In the present invention, the second screw sleeve 71 is provided with a through hole or a tapered hole, so that after the scale is scraped off, a part of the scale is discharged with the flowing steam, and the other part of the scale is extruded out of the heat exchange tube 13 by the second screw sleeve 71 and the cleaning plate 72.

The linkage mechanism 9 comprises a driving motor 91 fixedly arranged in one end of a shell 1, a first driving mechanism 5 is connected with the driving motor 91, a second driving gear 92 is arranged at one end of the first driving mechanism 5, a fourth transmission gear 93 is arranged on a heat exchange tube 13 at one end corresponding to the second driving gear 92, a transverse transmission toothed belt 94 is sleeved on the fourth transmission gear 93 of each heat exchange tube unit 10, and a vertical transmission toothed belt 95 is sleeved on the second driving gear 92 and the fourth transmission gear 93 on the same vertical line with the second driving gear 92. In the invention, the first driving mechanism 5 and the heat exchange pipe 13 can be driven simultaneously by one driving motor 91, so that the second driving mechanism 8 is driven simultaneously, the structure is simple, and the cost is effectively saved.

The invention relates to a sewage treatment method based on high-salinity wastewater treatment equipment, which comprises the following steps:

s1, inputting steam to the steam inlet 11 to heat the heat exchange pipe 13;

s2, pumping the high-salinity wastewater to the spray pipe 14, so that the high-salinity wastewater is sprayed downwards from the uppermost layer of the heat exchange pipe 13;

s3, controlling the linkage mechanism 9 to enable the heat exchange tube 13 to rotate, enabling the high-salinity wastewater to form a liquid film on the surface of the heat exchange tube 13, heating the liquid film through the heat exchange tube 13 to form water vapor, driving the second driving mechanism 8 to drive the internal cleaning mechanism 7 to clean the scale on the inner wall of the heat exchange tube 13, and discharging the scale through the steam outlet 12; the control linkage mechanism 9 drives the first driving mechanism 5 to drive the external cleaning mechanism 4 to move back and forth along the axial direction of the heat exchange tube 13, so as to clean crystals on the surface of the heat exchange tube 13; the movable supporting mechanism 2 is squeezed open in the moving process or the rotating driving mechanism 3 is driven by the toggle mechanism 6 to drive the movable supporting mechanism 2 to transfer the accommodating cavity 15;

s4, controlling the steam outlet 18 arranged at the upper part of the shell 1 to be opened, and sending the water steam in the shell 1 to the condenser from the steam outlet 18;

s5, controlling a sewage discharge port 19 arranged at the lower part of the shell 1, and discharging the crystal falling off from the shell 1.

The foregoing shows and describes the general principles and features of the present invention, together with the advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A high-salinity wastewater treatment device comprises a shell (1) and is characterized in that a plurality of heat exchange tube units (10) which are parallel to each other are arranged in the shell (1) from top to bottom at intervals, a steam inlet (11) and a steam outlet (12) which can be communicated with the heat exchange tube units (10) are respectively arranged on the shell (1), each heat exchange tube unit (10) is respectively formed by a plurality of heat exchange tubes (13) which are uniformly distributed at intervals, a spray pipe (14) is arranged in the top of the shell (1), a movable supporting mechanism (2) which can movably support the heat exchange tube units (10) is arranged in the shell (1), an accommodating cavity (15) which can accommodate the movable supporting mechanism (2) is arranged on the side wall of the shell (1), a rotary driving mechanism (3) which drives the movable supporting mechanism (2) to be turned into or turned out of the accommodating cavity (15) is arranged in the accommodating cavity (15), an external cleaning mechanism (4) which can clean the surface crystallization of the heat exchange tube (13) is sleeved on the outer wall of the heat exchange tube (13), a first driving mechanism (5) which can drive the external cleaning mechanism (4) to move back and forth along the axial direction of the heat exchange tube (13) is arranged in the shell (1), a toggle mechanism (6) capable of driving the rotary driving mechanism (3) to work is arranged on the first driving mechanism (5), an internal cleaning mechanism (7) which can clean the inner wall of the heat exchange tube (13) is arranged in the heat exchange tube (13), a second driving mechanism (8) which can drive the internal cleaning mechanism (7) to move back and forth along the axial direction of the heat exchange tube (13) when the heat exchange tube (13) rotates is arranged in the heat exchange tube (13), one end of the shell (1) is provided with a linkage mechanism (9) which can drive the first driving mechanism (5) to work and drive the heat exchange tube (13) to rotate; a plurality of heat conduction convex ribs (16) are uniformly distributed on the outer wall of the heat exchange tube (13), and heat conduction grooves (17) communicated with the inner cavity of the heat exchange tube (13) are formed in the heat conduction convex ribs (16); the external cleaning mechanism (4) comprises a sliding seat (41), a mounting hole (42) is formed in the sliding seat (41) at a position corresponding to the heat exchange tube (13), a cleaning sleeve (43) is movably arranged in the mounting hole (42), and the cleaning sleeve (43) is movably sleeved on the heat exchange tube (13); the first driving mechanism (5) comprises a first reciprocating screw rod (51) arranged in the bottom of the shell (1), a first screw rod sleeve (52) is sleeved on the first reciprocating screw rod (51), an installation groove (53) is formed in the first screw rod sleeve (52), the sliding seat (41) is arranged in the installation groove (53), and the toggle mechanism (6) is arranged on one side of the first screw rod sleeve (52); the internal cleaning mechanism (7) comprises a second screw rod sleeve (71) movably arranged in the heat exchange tube (13), a cleaning plate (72) is arranged on the outer wall of the second screw rod sleeve (71), the second screw rod sleeve (71) is movably arranged on the second driving mechanism (8), the second driving mechanism (8) comprises a second reciprocating screw rod (82) arranged in the heat exchange tube (13), the second screw rod sleeve (71) is movably arranged on a second reciprocating screw rod (82), one end of the second reciprocating screw rod (82) is provided with a second transmission gear (83), the inner wall of one end of the heat exchange tube (13) corresponding to the second transmission gear (83) is provided with annular inner teeth (84), a third transmission gear (85) is meshed between the annular internal teeth (84) and the second transmission gear (83), the third transmission gear (85) is movably arranged on the shell (1) through a gear shaft; the linkage mechanism (9) comprises a driving motor (91) fixedly arranged in one end of the shell (1), the first driving mechanism (5) is connected with the driving motor (91), one end of the first driving mechanism (5) is provided with a second driving gear (92), a fourth transmission gear (93) is arranged on a heat exchange tube (13) at one end corresponding to the second driving gear (92), a transverse transmission toothed belt (94) is sleeved on the fourth transmission gear (93) of each heat exchange tube unit (10), a vertical transmission toothed belt (95) is sleeved on the second driving gear (92) and the fourth transmission gear (93) at the same vertical line with the second driving gear (92), the movable supporting mechanism (2) comprises a rotating shaft (21) movably arranged on one side of the accommodating cavity (15), and an arc-shaped seat (22) is arranged in the middle of the rotating shaft (21), a plurality of supporting plates (23) capable of supporting the heat exchange tubes (13) are arranged on the arc-shaped seat (22) at intervals.

2. The high-salinity wastewater treatment equipment according to claim 1, wherein the rotary driving mechanism (3) comprises a first driving gear (31) movably arranged in the accommodating cavity (15), a first transmission gear (32) is arranged on the rotary shaft (21), the first transmission gear (32) is meshed with the first driving gear (31), a driving rack (33) is movably arranged in the accommodating cavity (15) at one side of the first driving gear (31), the driving rack (33) is meshed with the first driving gear (31), a driving head (34) matched with the toggle mechanism (6) is arranged at one end of the driving rack (33) far away from the rotary shaft (21), and inclined planes (35) facilitating disengagement of the toggle mechanism (6) are arranged on the upper surfaces of two ends of the driving head (34).

3. The high-salinity wastewater treatment equipment according to claim 2, wherein the toggle mechanism (6) comprises a toggle seat (61) connected to the first driving mechanism (5), a waist-shaped hole (62) is formed in the upper portion of the toggle seat (61) along the vertical direction, a sliding shaft (63) is movably arranged in the waist-shaped hole (62), a toggle rod (64) is arranged on the sliding shaft (63), an elastic mechanism (65) capable of driving the toggle rod (64) to be pressed down is arranged in the toggle seat (61), a sliding wheel (66) is arranged at the outer end of the toggle rod (64), and a guide seat (67) capable of driving the toggle rod (64) to move up so as to separate the toggle rod (64) from the driving head (34) is arranged in the accommodating cavity (15) at a position corresponding to the sliding wheel (66).

4. A sewage treatment method based on the high-salinity wastewater treatment plant according to any one of claims 1 to 3, characterized by comprising the steps of:

s1, inputting steam into the steam inlet (11) to heat the heat exchange pipe (13);

s2, pumping the high-salinity wastewater to the spray pipe (14) to make the high-salinity wastewater spray downwards from the uppermost layer of the heat exchange pipe (13);

s3, controlling the linkage mechanism (9) to enable the heat exchange tube (13) to rotate, enabling high-salt wastewater to form a liquid film on the surface of the heat exchange tube (13), heating the liquid film through the heat exchange tube (13) to form water vapor, driving the second driving mechanism (8) to drive the internal cleaning mechanism (7) to clean water scales on the inner wall of the heat exchange tube (13) and discharging the water scales through the steam outlet (12); the control linkage mechanism (9) drives the first driving mechanism (5) to drive the external cleaning mechanism (4) to move back and forth along the axial direction of the heat exchange tube (13) so as to clean crystals on the surface of the heat exchange tube (13); the movable supporting mechanism (2) is squeezed open in the moving process or the rotating driving mechanism (3) is driven by the toggle mechanism (6) to drive the movable supporting mechanism (2) to transfer the accommodating cavity (15);

s4, controlling a steam outlet (18) arranged at the upper part of the shell (1) to be opened, and sending the water steam in the shell (1) to a condenser from the steam outlet (18);

s5, controlling a drain outlet (19) arranged at the lower part of the shell (1) to discharge the crystal falling off from the shell (1).