CN112028157A - Secondary groove type distributing device with pressure stabilizing plate for thin layer drying equipment - Google Patents

Abstract

The invention discloses a secondary trough type distributor with a pressure stabilizing plate for thin layer drying equipment, wherein a secondary distributing mechanism comprises a rectangular overflow groove, a U-shaped main trough, a flow stabilizing plate, a main infusion pipe and infusion pipes, the upper end of a drying rotary column is provided with the rectangular overflow groove, the upper end of the rectangular overflow groove is provided with the U-shaped main trough, the flow stabilizing plate is arranged in the U-shaped main trough, one side of the U-shaped main trough is provided with the main infusion pipe, a plurality of infusion pipes are arranged between the main infusion pipe and the U-shaped main trough, and one end of each infusion pipe penetrates into the U-shaped main trough; on one hand, the secondary distributing mechanism slows down the descending kinetic energy of the mother liquor and avoids the direct impact of the secondary distributing mechanism by the large-flow mother liquor; on the other hand, the liquid level is prevented from rapidly fluctuating to cause feed liquid to splash, the distribution uniformity of the mother liquid is effectively improved, and a complete, uniform and stable liquid film can be rapidly formed on the outer surface of the drying rotary column under the action of the gravity and the surface tension of the mother liquid and the centrifugal force of the drying rotary column.

Description

Secondary groove type distributing device with pressure stabilizing plate for thin layer drying equipment

Technical Field

The invention relates to the field of dry drying evaporation concentration, in particular to a secondary trough type distributor with a pressure stabilizing plate for thin-layer drying equipment.

Background

The high-salt high-concentration organic waste liquid generally refers to waste liquid with COD of more than 10,000mg/L and salt content of more than 20,000mg/L, mainly comes from fine chemical industries such as pesticides, medicines, coal chemical industry and the like, and has the characteristics of difficult degradation, high toxicity, high pollution degree and the like. The key to realize the resource utilization and disposal of the high-salt organic waste liquid is to completely separate the organic matters and the salt in the high-salt organic waste liquid, and firstly, conditions are created to crystallize the salt in order to completely separate the organic matters and the salt in the high-salt organic waste liquid.

At present, the conventional evaporation concentration crystallization technology mainly comprises triple effect evaporation, multiple effect evaporation and the like, but aiming at the evaporation concentration treatment of high-salt high-concentration organic waste liquid, the existing equipment has great disadvantages:

first, there is a constant enrichment of organic matter and salts. In the process of multiple-cycle evaporation, organic matters and salt in the evaporation concentrated solution are continuously accumulated, so that the concentration of wastewater entering an evaporation crystallizer is higher and higher, the effect of evaporation crystallization is reduced, the viscosity of the evaporation concentrated solution is higher and higher, and the boiling point of the evaporation concentrated solution is higher and higher; on the other hand, when the organic matter content is too high, feed liquid foams in the evaporation concentration process, normal operation of conventional evaporation crystallization equipment is influenced, and paralysis of the whole evaporation system can be caused finally.

Secondly, the evaporation equipment is blocked. As the concentration of organic matters and salt in the mother liquor is increased, the solution becomes viscous and solid-liquid is not easy to separate after long-term circulation, and the solid-liquid can be bonded and blocked in the evaporation crystallizer, so that the evaporation crystallizer can not normally operate.

In order to solve the problems that the conventional evaporative crystallization equipment is difficult to evaporate and difficult to ensure the evaporative crystallization effect in the treatment of the high-salt organic waste liquid, the thin-layer evaporation equipment for the high-salt organic waste liquid is provided so as to solve the problems; the method can continuously and stably realize the liquid-solid phase transformation of the high-salt organic waste, and improve the technical guarantee for the quality-based resource utilization of the industrial waste salt.

In the evaporation process of the thin-layer drying equipment, if the mother liquor is not uniformly distributed, the surface of the main equipment cannot be uniformly formed into a film, so that heat exchange is deteriorated, and energy consumption is wasted; if the liquid film is not uniform in thickness seriously, the equipment is difficult to evaporate. Therefore, in order to enable the solution to form a film on the surface of the main equipment uniformly and keep the solution consistent in the thickness direction, the working performance of the thin-layer dryer and the final recycling effect of the high-salt organic waste liquid are directly influenced.

The conventional spraying type liquid distributor can spray mother liquid into liquid drops or the liquid drops cover the outer surface under the ideal state, and the liquid drops are connected and accumulated to form a continuous and uniform liquid film to exchange heat with the thin-layer drying main body equipment; but in practice, the pressure and flow rate are difficult to control in the spraying process, whether the mother liquor is uniformly distributed on the outer surface of the main equipment cannot be determined, and the mother liquor is easy to carry liquid drops with small volume after evaporation and gasification, so that the serious problem of air suction and liquid carrying is caused; in addition, for a conventional spraying liquid distributor, when the organic matter content of the mother liquor added into the liquid distributor is high, sticky colloid is easily formed, so that the mother liquor is accumulated in a groove between main body devices, liquid distribution is uneven in use, the mother liquor accumulated in the groove is more and more sticky along with continuous extension of the operation time, and the drying dryer cannot continue to operate; for the lower submerged distributor, the mother liquor with high organic content is continuously evaporated under the action of high heat, the concentration of the organic matter is continuously increased, and the fluidity of the mother liquor is increasingly poor, so that the equipment cannot run.

The structure of the liquid distributor directly influences the distribution and film forming quality of the organic waste liquid of the thin-layer drying equipment, and the uniformity of the liquid film of the high-salt organic waste liquid directly influences the heat exchange efficiency, so that the quality-based resource utilization of the high-salt organic waste liquid is influenced; therefore, a reasonable and scientific liquid distributor is needed to realize the quality-based resource utilization of the high-salt organic waste liquid.

Disclosure of Invention

The invention aims to provide a two-stage trough-type distributor with a pressure stabilizing plate for thin-layer drying equipment, which is used for solving the problems in the background technology.

In order to solve the technical problems, the invention provides the following technical scheme: a secondary trough-type distributing device with a pressure stabilizing plate for thin-layer drying equipment comprises a supporting frame, wherein a drying rotary column is arranged at the upper end of the supporting frame, the drying rotary column is of a rotary horizontal column tube structure, heat conduction oil is introduced into the drying rotary column and is a carrier for drying mother liquor, the drying rotary column is matched with a secondary distributing mechanism to uniformly distribute the mother liquor on the outer surface of the drying rotary column, and a secondary distributing mechanism is arranged at the upper end of the drying rotary column and is used for distributing the mother liquor on the outer surface of the drying rotary column, so that the descending kinetic energy of the mother liquor is slowed down, and the secondary distributing mechanism is prevented from being; on the other hand, the liquid level is prevented from rapidly fluctuating, the feed liquid is splashed, the distribution uniformity of the mother liquid is effectively improved, a complete, uniform and stable liquid film can be rapidly formed on the outer surface of the drying rotary column under the action of the gravity, the surface tension and the centrifugal force of the drying rotary column, the effect that the mother liquid is uniformly distributed along the radial direction of main equipment is achieved, the heat exchange efficiency is effectively improved, power mechanisms are arranged on two sides of the drying rotary column and are used for driving the drying rotary column to rotate, a heat source mechanism is arranged on one side, far away from the drying rotary column, of each power mechanism and is used for introducing heat conduction oil into a sandwich layer of the drying rotary column, a blanking mechanism is arranged at the lower end of the drying rotary column and is used for scraping and collecting the liquid film on the.

Preferably, the secondary distributing mechanism comprises a rectangular overflow groove, a U-shaped main groove, a flow stabilizing plate, a main infusion pipe and an infusion pipe, the upper end of the drying rotary column is provided with a rectangular overflow groove, the long side wall of the rectangular overflow groove is parallel to the drying rotary column, the length of the rectangular overflow groove is the same as that of the drying rotary column, the rectangular overflow groove is used for uniformly distributing the mother liquor after the flow stabilization through the U-shaped main groove on the outer surface of the drying rotary column, the U-shaped main groove is arranged at the upper end of the rectangular overflow groove, the U-shaped main groove is of a U-shaped structure, the mother liquor can flow into the rectangular overflow groove along the outer wall of the U-shaped main groove, so that the mother liquor uniformly and stably flows into the rectangular overflow groove without splashing, the flow stabilizing plate is arranged in the U-shaped main groove and is used for uniformly distributing the mother liquor output by the infusion pipe into the U-, u-shaped owner groove one side is provided with the infusion house steward, be provided with a plurality of transfer lines between infusion house steward and the U-shaped owner groove, infusion house steward and transfer line intercommunication for divide into a plurality of branches with the mother liquor, the transfer line is four at least, be parallel to each other between the transfer line, length equal, and equidistant setting, the export of transfer line is located the central axis of stabilizer directly over, transfer line one end penetrates the U-shaped owner inslot.

Preferably, the flow stabilizing plate is provided with a plurality of flow equalizing through holes which are circular through holes, so that mother liquor can be uniformly distributed and fall into the U-shaped main tank, the side wall of the U-shaped main tank parallel to the infusion main pipe is provided with a plurality of primary overflow holes, the primary overflow holes are circular through holes, the flow rate of the mother liquor is uniform under the distribution action of the primary overflow holes, the acceleration approaches zero, the mother liquor can be stabilized and stabilized for the first time, the upper end of the side wall of the rectangular overflow tank parallel to the infusion main pipe is provided with secondary overflow holes, the secondary overflow holes are of a near-continuous V-shaped tooth structure, when the liquid level of the rectangular overflow tank submerges the secondary overflow holes, the secondary overflow holes can stabilize the mother liquor again, the mother liquor flows out through the secondary overflow holes and combines the rotation of the drying rotary column, and a stable and uniform liquid film is formed on the outer surface of the main body equipment, evenly spread on the outer surfaces of the rotary column A and the rotary column B.

Preferably, the inner walls of the U-shaped main groove, the main infusion pipe and the infusion pipe are all provided with anti-corrosion coatings, so that the device is prevented from being corroded when contacting with a substance easy to corrode, and the service life of the liquid distributor of the thin-layer drying equipment is prolonged.

Preferably, the upper height of the first-stage overflow hole is a, the height of the rectangular overflow groove is B, the a is less than the B, so that the mother liquor passing through the first-stage overflow hole is prevented from directly spilling on the rotary column A and the rotary column B over the rectangular overflow groove to cause uneven material film, the diameter of the flow equalizing through hole is c, the diameter of the first-stage overflow hole is d, the c is greater than d, and the mother liquor is ensured to further stabilize the U-shaped main groove after uniformly flowing into the U-shaped main groove, as shown in fig. 8, baffles are arranged on two sides of the rectangular overflow groove, the width of each baffle is e, the width of each baffle is 80 mm or more than e is 150 mm, temperature unevenness caused by temperature decrease along the axial direction at the left end and the right end of the drying rotary column is avoided, so that the distributed liquid film cannot be completely dried, the opening angle of the second-stage overflow hole is m, the angle of 30 degrees or more than m, the height of the rectangular overflow groove, p is more than or equal to 0.2: n is less than or equal to 0.4, the spreading of the outer surfaces of the rotary column A and the rotary column B is uniform due to the opening angle and the height of the secondary overflow holes, and the situation that the mother liquor between the secondary overflow holes 15 flows out and then merges to cause uneven spreading is avoided.

Preferably, the drying rotary column comprises a rotary column a and a rotary column B which rotate in opposite directions, the central axes of the rectangular overflow trough, the U-shaped main trough and the flow stabilizer and the axial symmetry lines of the rotary column a and the rotary column B are located on the same vertical plane, the rotating direction is convenient for a scraper to scrape off a dried material film, the width of the rectangular overflow trough is f, the cross-sectional diameters of the rotary column a and the rotary column B are g, and f is not less than 1: g is less than or equal to 2, the arrangement between the rectangular overflow groove and the rotating column A and between the rectangular overflow groove and the rotating column B is reasonable, so that the mother liquor flowing out of the rectangular overflow groove respectively flows into the outer surface of the upper right part of the rotating column A and the outer surface of the upper left part of the rotating column B, namely cambered surfaces corresponding to an angle Q and an angle R shown in the figure 2, and the angle Q and the angle R are both 45 degrees, thereby avoiding uneven material film caused by the material film splashing to a gap between the rotating column A and the rotating column B.

Preferably, power unit includes pivot, bearing, rotary joint, sprocket, reduction gear, annular chain, dry revolving column both sides are provided with the pivot, the pivot drives revolving column A and revolving column B and rotates, the pivot middle part is provided with the bearing, the bearing is used for rotating revolving column A and revolving column B and is fixed in on the support frame, one side that dry revolving column was kept away from in the pivot is provided with rotary joint, rotary joint is used for making fixed the letting in heat source mechanism one side, the pivot middle part still is provided with the sprocket, the sprocket is used for driving the pivot and rotates, dry revolving column lower extreme is provided with the reduction gear, the reduction gear is used for controlling the slew velocity of revolving column A and revolving column B, connect through annular chain between reduction gear and the sprocket, annular chain is used for transmitting the rotational motion with the reduction gear for the sprocket.

Preferably, the heat source mechanism comprises a heat conduction oil pipe, a temperature sensor, a valve and an inlet, wherein the end, away from the rotating shaft, of the rotating joint is provided with the heat conduction oil pipe, the heat conduction oil pipe is used for introducing heat conduction oil into an interlayer of the rotating column A and the rotating column B, the temperature sensor and the valve are arranged in the middle of the heat conduction oil pipe, the temperature sensor is used for sensing the temperature of the heat conduction oil and controlling the temperature sensor, the valve is used for controlling the flow of mother liquor, and the inlet is formed in the end, away from the rotating joint, of the heat conduction.

Preferably, unloading mechanism includes scraper, revolute pair, workbin, the one side that rotary column A and rotary column B kept away from each other is provided with the scraper, the scraper is used for scraping the liquid film of rotary column A and rotary column B surface down, the scraper upper end is provided with the revolute pair, the revolute pair is used for controlling the scraper and rotates the angle between column A, the rotary column B, the scraper lower extreme is provided with the workbin, the workbin is used for holding the liquid film that the scraper scraped down.

Preferably, the upper end of the drying rotary column is provided with a waste gas collecting cover for collecting and discharging steam and organic waste gas generated during the drying of the thin layer.

Compared with the prior art, the invention has the following beneficial effects:

1. the combined application of the main infusion tube and the infusion tubes which are uniformly distributed with each other can ensure that the total flow deviation on each infusion tube is extremely small, the integral distribution uniformity is high, thus the uniformity of liquid distribution of the liquid distributor during the operation can be ensured, the amount of mother liquid supplied to the flow stabilizing plate by each infusion tube is ensured not to have too large difference, and the improvement of the working efficiency of the thin-layer dryer is facilitated;

2. the arrangement of the flow stabilizing plate can slow down the descending kinetic energy of the mother liquid and prevent the liquid distributor device from being directly impacted by the large-flow mother liquid; on the other hand, the liquid level in the U-shaped main tank is prevented from rapidly fluctuating to cause splashing of the feed liquid, and the distribution uniformity of the mother liquid is effectively improved; due to the design of the groove at the bottom of the U-shaped main tank, impurities in the mother liquor are filtered and intercepted, and the supernatant is ensured to flow into the rectangular overflow tank below;

3. the mother liquor is gradually raised in the side plates of the rectangular overflow groove in an overflow mode, flows onto the outer surface of the drying rotary column along the secondary overflow holes after reaching a certain height, and can quickly form a complete, uniform and stable liquid film on the outer surface under the action of gravity, centrifugal force and surface tension, so that the effect of uniformly distributing the mother liquor along the radial direction of the drying rotary column is achieved, the heat exchange efficiency is effectively improved, and the resource utilization of the high-salt-content organic waste liquor is realized;

4. the liquid distribution groove is provided with a section of baffle plate with a distance of e on two opposite side plates of the rectangular overflow groove respectively, so as to avoid the uneven temperature caused by the temperature decrease along the axial direction at the left end and the right end of the main body equipment, and further avoid the incomplete drying of the liquid distribution film;

5. through the arrangement of the relative positions of the U-shaped main tank and the rectangular overflow tank, the rotary column A and the rotary column B, a liquid film on the outer surface of the main body equipment cannot fall to a groove position between the two main body equipment under the action of centrifugal force, and the position of the liquid film is controlled on the outer surface, so that on one hand, the phenomenon that the mother liquor is gathered at the groove position to influence the operation of the whole thin layer drying equipment is avoided, on the other hand, the baffle devices arranged at the two outer edges of the groove position are also omitted, and the problem that the mother liquor overflows outwards when more mother liquor exists in the middle of the groove in the original liquor distribution device is;

6. compared with the traditional liquid distributor, the two-stage liquid homogenizing device with the flow stabilizing plate, the U-shaped groove and the overflow hole has the advantages of excellent liquid distributing effect, larger operation elasticity, easiness in disassembly, corrosion resistance and the like.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:

FIG. 1 is a schematic structural view of a two-stage trough-type distributor with a pressure stabilizing plate for a thin layer drying device according to the present invention;

FIG. 2 is a first perspective view of the secondary distribution mechanism of the present invention;

FIG. 3 is a second perspective view of the secondary distribution mechanism of the present invention;

FIG. 4 is a perspective view of the U-shaped main channel and the stabilizer plate of the present invention;

FIG. 5 is a perspective view of a rectangular isopipe of the present invention;

FIG. 6 is a cross-sectional view of the secondary distribution mechanism of the present invention;

FIG. 7 is a detail view of part A of the present invention;

FIG. 8 is a detail view of part B of the present invention;

fig. 9 is a schematic structural view of the blanking mechanism of the present invention.

In the figure: 1. a support frame; 2. drying the rotary column; 3. a secondary distributing mechanism; 4. a power mechanism; 5. a heat source mechanism; 6. a blanking mechanism; 7. rotating the column A; 8. rotating the column B; 9. a rectangular overflow trough; 10. a U-shaped main groove; 11. a flow stabilizer; 12. a main infusion pipe; 13. a transfusion tube; 14. a primary overflow aperture; 15. a secondary overflow aperture; 16. a flow equalizing through hole; 17. a bearing; 18. a rotary joint; 19. a sprocket; 20. a speed reducer; 21. an endless chain; 22. a heat conducting oil pipe; 23. a temperature sensor; 24. a valve; 25. an inlet; 26. a scraper; 27. a revolute pair; 28. a blanking box; 29. an exhaust gas collection hood; 30. a rotating shaft; 31. and a baffle plate.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example (b): the invention provides the technical scheme, as shown in figure 1, the invention provides a secondary trough type distributor with a pressure stabilizing plate for thin layer drying equipment, which comprises a support frame 1, wherein a drying rotary column 2 is arranged at the upper end of the support frame 1, the drying rotary column 2 is of a rotary horizontal column tube structure, heat conducting oil is introduced into the drying rotary column 2 and is a carrier for drying mother liquor, the drying rotary column is matched with a secondary distributing mechanism 3 to uniformly lay the mother liquor on the outer surface of the drying rotary column 2, the upper end of the drying rotary column 2 is provided with a secondary distributing mechanism 3, and the secondary distributing mechanism 3 is used for laying the mother liquor on the outer surface of the drying rotary column 2, so that the kinetic energy of descending of the mother liquor; on the other hand, avoid the sharp fluctuation of liquid level, cause the feed liquid to splash, effectively improve the homogeneity of mother liquor distribution, gravity and surface tension at the mother liquor, under the effect of 2 centrifugal forces of dry rotary column, can form complete, even stable liquid film at 2 surface of dry rotary column rapidly, reach the effect that the mother liquor distributes the liquid along the main part equipment radial direction, effectively improve heat exchange efficiency, 2 both sides of dry rotary column are provided with power unit 4, power unit 4 is used for driving dry rotary column 2 and rotates, one side that power unit 4 kept away from dry rotary column 2 is provided with heat source mechanism 5, heat source mechanism 5 is used for letting in the conduction oil in 2 interlayers of dry rotary column, 2 lower extremes of dry rotary column are provided with unloading mechanism 6, unloading mechanism 6 is used for scraping the liquid film after 2 surface drying of dry rotary column and collecting and gets into next processing.

As shown in fig. 2, the secondary distributing mechanism 3 includes a rectangular overflow trough 9, a U-shaped main trough 10, a flow stabilizing plate 11, a main infusion pipe 12, and an infusion tube 13, the upper end of the drying rotary column 2 is provided with the rectangular overflow trough 9, the long side wall of the rectangular overflow trough 9 is parallel to the drying rotary column 2, the length of the rectangular overflow trough 9 is the same as that of the drying rotary column 2, and the rectangular overflow trough 9 is used for uniformly distributing the mother liquor after being stabilized by the U-shaped main trough 10 on the outer surface of the drying rotary column 2, the upper end of the rectangular overflow trough 9 is provided with the U-shaped main trough 10, as shown in fig. 4, since the U-shaped main trough 10 is a U-shaped structure, the mother liquor can flow into the rectangular overflow trough 9 along the outer wall of the U-shaped main trough 10, so that the mother liquor uniformly and stably flows into the rectangular overflow trough 9, and does not splash, and the flow stabilizing plate 11 is arranged inside the U-shaped main trough 10, and, a main infusion pipe 12 is arranged on one side of the U-shaped main groove 10, a plurality of infusion pipes 13 are arranged between the main infusion pipe 12 and the U-shaped main groove 10, the main infusion pipe 12 is communicated with the infusion pipes 13 and used for dividing mother liquor into a plurality of branches, the infusion pipes 13 are at least four, the infusion pipes 13 are parallel to each other, the lengths of the infusion pipes are equal, the infusion pipes 13 are arranged at equal intervals, an outlet of the infusion pipe 13 is located right above the central axis of the flow stabilizing plate 11, and one end of the infusion pipe 13 penetrates into the U.

Referring to fig. 3, a plurality of flow equalizing through holes 16 are formed on a flow stabilizing plate 11, the flow equalizing through holes 16 are circular through holes, so that mother liquor can uniformly fall into a U-shaped main tank 10 in a divided manner, a plurality of primary overflow holes 14 are formed in the parallel side walls of the U-shaped main tank 10 and a main infusion pipe 12, the circular through holes of the primary overflow holes 14, the flow rate of the mother liquor is uniform under the dividing action of the primary overflow holes 14, the acceleration approaches zero, the mother liquor can be stabilized for the first time, a secondary overflow hole 15 is formed in the upper end of the parallel side walls of a rectangular overflow tank 9 and the main infusion pipe 12, the secondary overflow hole 15 is of a nearly continuous V-shaped tooth structure, when the secondary overflow hole 15 is submerged by the liquid level of the rectangular overflow tank 9, the secondary overflow hole 15 can stabilize the mother liquor again, the mother liquor flows out through the secondary overflow hole 15 in combination with the rotation of a drying rotary column 2, and, uniformly spread on the outer surfaces of the rotating column A7 and the rotating column B8.

The inner walls of the U-shaped main groove 10, the main infusion pipe 12 and the infusion pipe 13 are all provided with anti-corrosion coatings, so that the device is prevented from being corroded when contacting with a substance easy to corrode, and the service life of a liquid distributor of thin-layer drying equipment is prolonged.

As shown in fig. 6 and 7, the upper height of the first-stage overflow hole 14 is a, the height of the rectangular overflow groove 9 is B, a is less than B, so as to prevent the mother liquor passing through the first-stage overflow hole 14 from directly spilling over the rectangular overflow groove 9 onto the rotary column a7 and the rotary column B8, which results in uneven material film, the diameter of the flow equalizing through hole 16 is c, the diameter of the first-stage overflow hole 14 is d, c is greater than d, so as to ensure that the mother liquor flows into the U-shaped main groove 10 uniformly and then flows stably, as shown in fig. 5, baffles 31 are arranged on two sides of the rectangular overflow groove 9, the width of the baffle 31 is e, the thickness of the baffle is 80 mm or more and less than or equal to 150 mm, so as to avoid uneven temperature caused by decreasing temperature along the axial direction at the left and right ends of the drying rotary column 2, which further results in that the distributed liquid film cannot be completely dried, as shown in fig. 8, the opening angle of the second-stage overflow hole 15 is, p is not less than 0.2: n is less than or equal to 0.4, the opening angle and the height of the secondary overflow holes 15 enable the outer surfaces of the rotary column A7 and the rotary column B8 to be uniformly paved, and the situation that the paving is not uniform due to the fact that mother liquor between the secondary overflow holes 15 flows out and then merges is avoided.

As shown in fig. 2, the drying rotary column 2 includes a rotary column a7 and a rotary column B8, which have opposite rotation directions, the central axes of the rectangular overflow tank 9, the U-shaped main tank 10 and the flow stabilizing plate 11 and the axial symmetry lines of the rotary column a7 and the rotary column B8 are located on the same vertical plane, and the rotation directions are such that the dried material film is conveniently scraped by the scraper 26, the width of the rectangular overflow tank 9 is f, the cross-sectional diameters of the rotary column a7 and the rotary column B8 are g, and the ratio of 1 ≦ f: g is less than or equal to 2, the arrangement among the rectangular overflow groove 9, the rotating column A7 and the rotating column B8 is reasonable, so that the mother liquor flowing out of the rectangular overflow groove 9 respectively flows into the outer surface of the upper right part of the rotating column A7 and the outer surface of the upper left part of the rotating column B8, namely cambered surfaces corresponding to an angle Q and an angle R shown in figure 2, and the angle Q and the angle R are both 45 degrees, thereby avoiding uneven material film caused by the fact that the material film splashes to a gap between the rotating column A and the rotating column B.

As shown in fig. 1, the power mechanism 4 includes a rotating shaft 30, a bearing 17, and a rotary joint 18, sprocket 19, reduction gear 20, annular chain 21, dry rotary column 2 both sides are provided with pivot 30, pivot 30 drives rotary column A7 and rotary column B8 and rotates, pivot 30 middle part is provided with bearing 17, bearing 17 is used for being fixed in on the support frame 1 with rotary column A7 and rotary column B8 rotation, one side that dry rotary column 2 was kept away from to pivot 30 is provided with rotary joint 18, rotary joint 18 is used for making fixed the letting in heat source mechanism 5 one side, pivot 30 middle part still is provided with sprocket 19, sprocket 19 is used for driving pivot 30 and rotates, dry rotary column 2 lower extreme is provided with reduction gear 20, reduction gear 20 is used for controlling the slew velocity of rotary column A7 and rotary column B8, connect through annular chain 21 between reduction gear 20 and sprocket 19, annular chain 21 is used for transmitting the rotational motion of reduction gear 20 to sprocket 19.

As shown in fig. 1, the heat source mechanism 5 includes a heat conducting oil pipe 22, a temperature sensor 23, a valve 24, and an inlet 25, wherein the heat conducting oil pipe 22 is disposed at one end of the rotary joint 18 away from the rotating shaft 30, the heat conducting oil pipe 22 is used for introducing heat conducting oil into an interlayer between the rotary column a7 and the rotary column B8, the temperature sensor 23 and the valve 24 are disposed in the middle of the heat conducting oil pipe 22, the temperature sensor 23 is used for sensing the temperature of the heat conducting oil and further controlling the temperature sensor, the valve 24 is used for controlling the flow of the mother liquor, and the inlet 25 is disposed at one end of the heat.

As shown in fig. 9, the blanking mechanism 6 includes a scraper 26, a rotary pair 27, and a blanking box 28, the scraper 26 is disposed on a side of the rotary column a7 and the rotary column B8 away from each other, the scraper 26 is used for scraping off a liquid film on the outer surfaces of the rotary column a7 and the rotary column B8, the rotary pair 27 is disposed at the upper end of the scraper 26, the rotary pair 27 is used for controlling an angle between the scraper 26 and the rotary column a7, and the rotary column B8, the blanking box 28 is disposed at the lower end of the scraper 26, and the blanking box 28 is used for containing the liquid film scraped off by the scraper.

As shown in fig. 9, the upper end of the drying rotary column 2 is provided with an exhaust gas collecting hood 29 for collecting and discharging vapor and organic exhaust gas generated during thin layer drying.

The working principle of the invention is as follows: the power mechanism 4 drives the drying rotary column 2 to rotate, the secondary distributing mechanism 3 evenly distributes the mother liquor on the outer surface of the drying rotary column 2, the heat source mechanism 5 introduces heat conduction oil into the interlayer of the drying rotary column 2 to dry the mother liquor to form a thin layer material film, and finally the blanking mechanism 6 scrapes the thin layer material film down to enter the next station;

the working principle of the secondary distributing mechanism is as follows: the mother liquor is evenly distributed into four parallel transfusion tubes 13 from a main transfusion tube 12, flows down after being distributed through the transfusion tubes 13, properly slows down the descending kinetic energy of the mother liquor through a flow stabilizing plate 11, reduces fluctuation of the liquid level, flows out from liquid equalizing through holes 16 uniformly distributed on the flow stabilizing plate 11, enters a U-shaped main tank 10 right below, is firstly gathered in a U-shaped groove at the bottom of the main tank along with the continuous injection of the mother liquor after being buffered by the flow stabilizing plate 11, and slowly and uniformly flows into a rectangular overflow groove 9 right below from a primary overflow hole 14 when the continuously injected mother liquor is accumulated to the height of the primary overflow hole 14, so that the first liquid equalizing of the high-salt organic waste liquid is realized; the mother liquor is continuously accumulated at the bottom of the rectangular overflow groove 9, so that the liquid is gradually raised on the outer wall, when the liquid level above the continuously accumulated mother liquor exceeds the height of the secondary overflow holes 15 on the two side walls of the rectangular overflow groove 9, the continuously accumulated mother liquor starts to enter the outer surfaces of the rotary column A7 and the rotary column B8 through the secondary overflow holes 15, and a complete, stable and uniform liquid film is rapidly formed on the outer surfaces of the rotary column A7 and the rotary column B8 under the combined action of gravity, surface tension and centrifugal force, so that the effect of uniformly distributing the liquid is achieved, the heat exchange efficiency is effectively improved, the evaporative crystallization of the high-salt organic waste liquor is realized, and the resource;

the working principle of the power mechanism 4 is as follows: the motor drives the reducer 20 to rotate, and then the rotation is transmitted to the chain wheel 19 and the rotating shaft 30 through the chain 21, wherein the rotating joint 18 keeps the heat conduction oil pipe 22 still;

the working principle of the heat source mechanism 5 is as follows: heat conducting oil is introduced into the interlayer of the rotary column A7 and the rotary column B8 through the inlet 25 and the heat conducting oil pipe 22, and heat energy is transferred to the liquid film on the outer surface of the rotary column A7 and the rotary column B8;

the working principle of the blanking mechanism 6 is as follows: the rotating pair 27 controls the angles and distances between the scraper 26 and the outer surfaces of the rotary column A7 and the rotary column B8, and the dried material films are scraped and placed in the blanking box 28 in the rotating process of the rotary column A7 and the rotary column B8.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. The utility model provides a thin layer drying equipment is with second grade slot type distributing device of taking steady voltage board, includes support frame (1), its characterized in that: the drying rotary column is characterized in that a drying rotary column (2) is arranged at the upper end of the support frame (1), a secondary material distribution mechanism (3) is arranged at the upper end of the drying rotary column (2), power mechanisms (4) are arranged on two sides of the drying rotary column (2), one side, far away from the drying rotary column (2), of each power mechanism (4) is provided with a heat source mechanism (5), and a blanking mechanism (6) is arranged at the lower end of the drying rotary column (2).

2. The secondary trough-type distributor with the pressure stabilizing plate for the thin layer drying equipment as claimed in claim 1, wherein: the secondary distributing mechanism (3) comprises a rectangular overflow groove (9), a U-shaped main groove (10), a flow stabilizing plate (11), a main infusion pipe (12) and an infusion pipe (13), the rectangular overflow groove (9) is arranged at the upper end of the drying rotary column (2), the U-shaped main groove (10) is arranged at the upper end of the rectangular overflow groove (9), the flow stabilizing plate (11) is arranged inside the U-shaped main groove (10), the main infusion pipe (12) is arranged on one side of the U-shaped main groove (10), a plurality of infusion pipes (13) are arranged between the main infusion pipe (12) and the U-shaped main groove (10), and one end of the infusion pipe (13) penetrates into the U-shaped main groove (10).

3. The secondary trough-type distributor with the pressure stabilizing plate for the thin layer drying equipment as claimed in claim 2, wherein: the flow stabilizing plate is characterized in that a plurality of flow equalizing through holes (16) are formed in the flow stabilizing plate (11), a plurality of primary overflow holes (14) are formed in the side wall, parallel to the U-shaped main groove (10) and the main infusion pipe (12), of the U-shaped main groove, a secondary overflow hole (15) is formed in the upper end of the side wall, parallel to the rectangular overflow groove (9) and the main infusion pipe (12), of the rectangular overflow groove, and the secondary overflow hole (15) is of a nearly continuous V-shaped tooth structure.

4. The secondary trough-type distributor with the pressure stabilizing plate for the thin layer drying equipment as claimed in claim 2, wherein: and the inner walls of the U-shaped main groove (10), the main infusion pipe (12) and the infusion pipe (13) are all provided with an anticorrosive coating.

5. The secondary trough-type distributor with the pressure stabilizing plate for the thin layer drying equipment as claimed in claim 3, wherein: the upper height of the first-level overflow hole (14) is a, the height of the rectangular overflow groove (9) is b, a is less than b, the diameter of the flow equalizing through hole (16) is c, the diameter of the first-level overflow hole (14) is d, c is greater than d, baffles (31) are arranged on two sides of the rectangular overflow groove (9), the width of each baffle (31) is e, e is more than or equal to 80 mm and less than or equal to 150 mm, the opening angle of the second-level overflow hole (15) is m, m is more than or equal to 30 degrees and less than or equal to 60 degrees, the height of the rectangular overflow groove (9) is n, the height of the second-level overflow hole (15) is p, and p is more than or equal to 0.2: n is less than or equal to 0.4.

6. The secondary trough-type distributor with the pressure stabilizing plate for the thin layer drying equipment as claimed in claim 1, wherein: the drying rotary column (2) comprises a rotary column A (7) and a rotary column B (8) which rotate in opposite directions, the width of the rectangular overflow groove (9) is f, the diameters of the sections of the rotary column A (7) and the rotary column B (8) are g, and f is not less than 1: g is less than or equal to 2.

7. The secondary trough-type distributor with the pressure stabilizing plate for the thin layer drying equipment as claimed in claim 1, wherein: power unit (4) are including pivot (30), bearing (17), rotary joint (18), sprocket (19), reduction gear (20), annular chain (21), dry rotary column (2) both sides are provided with pivot (30), pivot (30) middle part is provided with bearing (17), one side that dry rotary column (2) were kept away from in pivot (30) is provided with rotary joint (18), pivot (30) middle part still is provided with sprocket (19), dry rotary column (2) lower extreme is provided with reduction gear (20), connect through annular chain (21) between reduction gear (20) and sprocket (19).

8. The secondary trough-type distributor with the pressure stabilizing plate for the thin layer drying equipment as claimed in claim 7, wherein: the heat source mechanism (5) comprises a heat conduction oil pipe (22), a temperature sensor (23), a valve (24) and an inlet (25), wherein the heat conduction oil pipe (22) is arranged at one end, away from the rotating shaft (30), of the rotating joint (18), the temperature sensor (23) and the valve (24) are arranged in the middle of the heat conduction oil pipe (22), and the inlet (25) is arranged at one end, away from the rotating joint (18), of the heat conduction oil pipe (22).

9. The secondary trough-type distributor with the pressure stabilizing plate for the thin layer drying equipment as claimed in claim 6, wherein: unloading mechanism (6) are including scraper (26), revolute pair (27), workbin (28), one side that column A (7) and column B (8) kept away from each other is provided with scraper (26), scraper (26) upper end is provided with revolute pair (27), scraper (26) lower extreme is provided with workbin (28).

10. The secondary trough-type distributor with the pressure stabilizing plate for the thin layer drying equipment as claimed in claim 1, wherein: and the upper end of the drying rotary column (2) is provided with a waste gas collecting cover (29).

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