阅读说明：本技术 一种柠檬酸三正丁酯的酰化工艺装置及工艺方法 (Acylation process device and process method of tri-n-butyl citrate ) 是由 杭一林 于 2021-01-27 设计创作，主要内容包括：一种柠檬酸三正丁酯的酰化工艺装置及工艺方法,具体涉及到酰化反应领域,本发明的一种柠檬酸三正丁酯的酰化工艺装置包括风机、电机、提纯装置、反应釜、冷凝器、液态过滤箱、固态过滤箱、分离罐；反应釜底部通过第一连通管与下方的分离罐相连,第一连通管设置有阀门以控制第一连通管的开合,反应釜、分离罐、风机通过三通管互联,分离罐的下部连接有提纯装置,风机远离三通管的另一端与冷凝器的进口相连,冷凝器设有管道,管道的一端与冷凝器的出口相连、另一端插入到液态过滤箱的液面内,液态过滤箱与固态过滤箱相连通,以解决阻挡反应气体挥发的同时将废气一次性排出的技术问题。(An acylation process device and a process method of tri-n-butyl citrate, in particular to the field of acylation reaction, the acylation process device of the tri-n-butyl citrate comprises a fan, a motor, a purification device, a reaction kettle, a condenser, a liquid filter tank, a solid filter tank and a separation tank; the reation kettle bottom links to each other with the knockout drum of below through first communicating pipe, first communicating pipe is provided with opening and shutting of valve in order to control first communicating pipe, reation kettle, the knockout drum, the fan passes through the three-way pipe interconnection, the sub-unit connection of knockout drum has the purification device, the other end that the three-way pipe was kept away from to the fan links to each other with the import of condenser, the condenser is equipped with the pipeline, the one end of pipeline links to each other with the export of condenser, the other end inserts in the liquid level of liquid rose box, liquid rose box is linked together with solid-state rose box, with the solution stop that reaction gas volatilizees the while with the disposable exhaust technical.)

1. An acylation process device of tri-n-butyl citrate is characterized by comprising a fan, a motor, a purification device, a reaction kettle, a condenser, a liquid filter tank, a solid filter tank and a separation tank; the bottom of the reaction kettle is connected with a separation tank below through a first communicating pipe, the first communicating pipe is provided with a valve for controlling the opening and closing of the first communicating pipe, the reaction kettle, the separation tank and a fan are interconnected through a three-way pipe, the lower part of the separation tank is connected with a purification device, the other end of the fan, which is far away from the three-way pipe, is connected with an inlet of a condenser, the condenser is provided with a pipeline, one end of the pipeline is connected with an outlet of the condenser, the other end of the pipeline is inserted into the liquid level of a liquid filter box, and the.

2. The apparatus of claim 1, wherein the blower comprises a housing, a rotary base, a connecting rod, a counterweight ring, fan blades, a slide base, a friction column, a transmission mechanism, and a rotation mechanism; the upper end and the lower end of the casing are respectively connected with an air outlet of the three-way pipe and an air inlet of the condenser; a plurality of rotating columns are uniformly arranged on a horizontal plane of the outer wall of the rotating seat, and the fan blades are rotatably arranged on the rotating columns; the counterweight ring is installed on the rotary seat through a rotating mechanism, when the rotary seat rotates, the counterweight ring lags behind and rotates to enable the positioning mechanism to remove the locking of the fan blades, the relative rotation of the rotary seat and the counterweight ring drives the fan blades to rotate around the rotary column through a transmission mechanism by a preset angle, and at the moment, the rotary seat drives the fan blades to enable waste gas in the three-way pipe to blow to the condenser.

3. The apparatus as claimed in claim 2, wherein the upper and lower ends of the casing are provided with flanges, and the two flanges are respectively fixedly connected to the air outlet of the three-way valve and the air inlet of the condenser; the casing lower part is provided with the bearing support seat, the bearing mounting groove has been seted up on the casing wall of bearing support seat below, the fan still includes the second pivot, the second pivot passes through the bearing rotatable installation on the bearing support seat, first conical gear is installed to second pivot lower extreme, second pivot upper end and swivel mount fixed connection, the fan still includes the third pivot, the third pivot passes through the bearing suit in the bearing mount pad, the one end fixed mounting that the third pivot is located the casing has second conical gear, second conical gear meshes with first conical gear mutually, the other end of third pivot is connected with the output of motor, when the motor is opened, can drive the second pivot and rotate.

4. The apparatus as claimed in claim 3, wherein the rotary base has a circular hole at the center of its top end, the upper end of the circular hole is in threaded engagement with the gland, a plurality of rotary posts are provided on the same horizontal plane at the middle position of each vertical surface of the rotary base, bosses are provided at the outermost ends of the rotary posts, which are vertically symmetrical, the fan blades are mounted on the rotary posts and prevented from falling off under the action of the bosses, vertical limit grooves are uniformly distributed on the lower part of the rotary base in a cylindrical and circumferential direction for mounting and limiting the rotation of the support ring, and a fixing ring is provided at the lower end of the rotary base and is in threaded connection with the rotary base.

5. The apparatus as claimed in claim 4, wherein the first shaft is rotatably mounted in a central circular hole of the rotation base, a threaded hole is formed at the bottom end of the first shaft for mounting a limit bolt, a gland is fixed above the limit bolt for limiting the first shaft to move up and down but not limiting the first shaft to rotate relative to the rotation base, the upper part of the first shaft is uniformly provided with connecting rods which are positioned on the same horizontal plane and extend along the radial direction of the first shaft, the connecting rods are fixedly linked with a counterweight ring below the outermost ends of the connecting rods, the connecting rods are close to the outer ends, a sliding column vertically extends downwards, and the sliding column is a smooth and magnetic cylinder; the counterweight ring is circular, the outer wall is in contact with the casing but does not generate friction, a hole groove towards the center of the ring is uniformly formed in the same horizontal plane of the counterweight ring, the hole groove is located under the connecting rod, a friction column is installed in the hole groove, and one end, close to the outer wall of the counterweight ring, of the friction column extends out of the hole groove to be in friction contact with the inner wall of the casing.

6. The apparatus as claimed in claim 5, wherein the middle of the inner ring of the fan blade is provided with an installation groove with upper and lower slideways and a bottom groove communicated with the installation groove, the bottom groove is engaged with the boss to limit the sliding of the installation groove, so that the blade surface of the fan blade can be installed on the rotary column when the blade surface is in a vertical state, and the fan blade can rotate relative to the rotary column without departing from the rotary column when the rotation of the fan blade relative to the horizontal plane is less than a certain degree; the position of the fan blade close to the outer ring is provided with a slideway which penetrates through the upper surface and the lower surface of the fan blade, the slideway extends from the position of the fan blade close to the middle part to the position far away from the middle part to the side of the fan blade close to the fan blade and is gradually close to the outer ring of the fan blade, the inner wall of the slideway is gradually increased from the vertical state to the inclined angle, the width distance between the inner walls of the slideway is kept unchanged and is the same as the diameter of the sliding column, so that when the sliding column keeps; the outer side of the end part of the slideway close to the outer ring of the fan blade is provided with a vertically downward sealing cover; when all the fan blades are positioned in the horizontal state at the same time, the fan blades are matched with the counterweight ring to seal the fan.

7. The apparatus as claimed in claim 6, wherein the blower further comprises a support ring, the support ring is located below the fan blades and is annular, the inner wall of the support ring is uniformly provided with bumps corresponding to the limiting grooves, so that the support ring can be fixedly sleeved on the lower part of the rotary seat, the fixing ring is installed at the lower end of the rotary seat through threads to limit the support ring from moving up and down, and the outer wall of the support ring is uniformly provided with support rods on the same horizontal plane along the radial direction of the support ring.

8. The apparatus as claimed in claim 7, wherein the slide base is arc-shaped and located under the fan blades, and has a limiting hole at its lower end, and the slide base can be fixedly mounted at the outer end of the support rod through a nut, when the fan blades are in horizontal state, the lower surface of the fan blades is overlapped with the upper surface of the slide base, and the slide base does not prevent the fan blades from rotating around the rotating column counterclockwise; the arc wall has been seted up downwards to the slide up end, and the traveller extends to in the arc wall and can slide in the arc wall round first rotary column, and the arc wall is close to the downward vertical magnetism post of installing of slide initial position department, and when the traveller was located the initial end of slide, the magnetism post just in time just inhaled with the contact of traveller bottom and mutually, and the slide is close to the slide terminal department, offers the opening of intercommunication arc wall to the counter weight ring, and the opening part is provided with vertical inclined plane, and the closing cap coincide with the opening in order to seal the opening.

9. The apparatus as claimed in claim 8, wherein the friction column is slidably mounted in the hole groove via a stop nut, and the friction column comprises a push magnetic column, a connecting sleeve, a spring, and a friction ball column, and when the push magnetic column contacts the outer wall of the slide seat, the push magnetic column pushes the friction ball column to extend out of the hole groove via the spring, so that the counterweight ring rubs against the inner wall of the housing; when the hole groove rotates to the opening position of the sliding seat, the magnetic column is pushed to attract the lower end of the sliding column and drive the friction ball column to enter the opening, the magnetic column is pushed to drive the outer end of the friction ball column to extend into the hole groove through the connecting sleeve, and the counterweight ring and the machine shell do not have friction force any more.

10. A process for acylating tri-n-butyl citrate is characterized in that citric acid and n-butyl alcohol are firstly put into a reaction kettle for acylation reaction, a motor is in a closed state at the moment to prevent volatilization of preparation raw materials, a fan seals an air outlet of a three-way pipe, after the acylation reaction of the tri-n-butyl citrate is finished to prepare the tri-n-butyl citrate, the motor and a valve are opened, a separation tank separates and volatilizes liquid, the unvolated liquid flows into a purification tank to refine the tri-n-butyl citrate, volatilized gas and waste gas are pumped to a condensation pipe through the three-way pipe by the fan, the liquid obtained by condensation flows back to the purification tank for purification, and the rest waste gas is sent to a liquid filter box for liquid purification firstly and then sent to a solid filter box for solid purification and then discharged to the atmosphere.

Technical Field

The invention relates to the field of acylation reaction, in particular to an acylation process device and an acylation process method of tri-n-butyl citrate.

Background

Tri-n-butyl citrate, TBC for short, is industrially prepared by acylation reaction of citric acid and n-butanol. Acylation reaction or (acylation reaction) is a reaction in organic chemistry in which hydrogen or other groups are replaced by acyl groups, and the acylation reaction generates harmful waste gas, the function and process of the conventional waste gas device are too single, and in the conventional acylation process, the acylation reaction and the waste gas treatment are performed simultaneously, so that the volatilization of raw materials and the loss of reaction gas are caused.

Disclosure of Invention

The invention provides an acylation process device and an acylation process method of tri-n-butyl citrate, which aim to solve the technical problem that waste gas is discharged at one time while reaction gas volatilization is blocked.

The acylation process device of tri-n-butyl citrate adopts the following technical scheme:

an acylation process device of tri-n-butyl citrate is characterized by comprising a fan, a motor, a purification device, a reaction kettle, a condenser, a liquid filter tank, a solid filter tank and a separation tank; the bottom of the reaction kettle is connected with a separation tank below through a first communicating pipe, the first communicating pipe is provided with a valve for controlling the opening and closing of the first communicating pipe, the reaction kettle, the separation tank and a fan are interconnected through a three-way pipe, the lower part of the separation tank is connected with a purification device, the other end of the fan, which is far away from the three-way pipe, is connected with an inlet of a condenser, the condenser is provided with a pipeline, one end of the pipeline is connected with an outlet of the condenser, the other end of the pipeline is inserted into the liquid level of a liquid filter box, and the.

Furthermore, the fan comprises a shell, a rotary seat, a connecting rod, a counterweight ring, fan blades, a sliding seat, a friction column, a transmission mechanism and a rotating mechanism; the upper end and the lower end of the casing are respectively connected with an air outlet of the three-way pipe and an air inlet of the condenser; a plurality of rotating columns are uniformly arranged on a horizontal plane of the outer wall of the rotating seat, and the fan blades are rotatably arranged on the rotating columns; the counterweight ring is installed on the rotary seat through a rotating mechanism, when the rotary seat rotates, the counterweight ring lags behind and rotates to enable the positioning mechanism to remove the locking of the fan blades, the relative rotation of the rotary seat and the counterweight ring drives the fan blades to rotate around the rotary column through a transmission mechanism by a preset angle, and at the moment, the rotary seat drives the fan blades to enable waste gas in the three-way pipe to blow to the condenser.

Furthermore, flanges are arranged at the upper end and the lower end of the shell, and the two flanges are fixedly connected with an air outlet of the three-way valve and an air inlet of the condenser respectively; the casing lower part is provided with the bearing support seat, the bearing mounting groove has been seted up on the casing wall of bearing support seat below, the fan still includes the second pivot, the second pivot passes through the bearing rotatable installation on the bearing support seat, first conical gear is installed to second pivot lower extreme, second pivot upper end and swivel mount fixed connection, the fan still includes the third pivot, the third pivot passes through the bearing suit in the bearing mount pad, the one end fixed mounting that the third pivot is located the casing has second conical gear, second conical gear meshes with first conical gear mutually, the other end of third pivot is connected with the output of motor, when the motor is opened, can drive the second pivot and rotate.

Further, the round hole has been seted up at swivel mount top center, round hole wall upper end and gland screw-thread fit, all be provided with a plurality of rotary columns on the same horizontal plane of the intermediate position of every vertical face of swivel mount, the vertical boss that is provided with longitudinal symmetry in the outermost end of rotary column, the flabellum is installed on the rotary column, and prevents to drop under the effect of boss, the swivel mount lower part has vertical spacing groove for cylinder and circumference evenly distributed for the rotation of installation and restriction support ring, the swivel mount lower extreme is provided with solid fixed ring, gu fixed ring and swivel mount threaded connection.

Furthermore, the first rotating shaft is rotatably arranged in a central circular hole of the rotating seat, a threaded hole is formed in the bottom end of the first rotating shaft and used for installing a limiting bolt, the gland is fixed above the limiting bolt and used for limiting the first rotating shaft to move up and down but not limiting the first rotating shaft to rotate relative to the rotating seat, connecting rods which are located on the same horizontal plane and extend along the radial direction of the first rotating shaft and are the same as the rotating columns are uniformly arranged on the upper portion of the first rotating shaft, a counterweight ring is fixedly connected below the outermost ends of the connecting rods, sliding columns vertically extend downwards and are close to the outer ends of the connecting rods, and the sliding columns are smooth and magnetic columns; the counterweight ring is circular, the outer wall is in contact with the casing but does not generate friction, a hole groove towards the center of the ring is uniformly formed in the same horizontal plane of the counterweight ring, the hole groove is located under the connecting rod, a friction column is installed in the hole groove, and one end, close to the outer wall of the counterweight ring, of the friction column extends out of the hole groove to be in friction contact with the inner wall of the casing.

Furthermore, the middle part of the inner ring of the fan blade is provided with a mounting groove with an upper slideway and a lower slideway and a bottom groove communicated with the mounting groove, the bottom groove is meshed with the boss to limit the sliding of the mounting groove and the lower slideway along the direction of the mounting groove, so that the blade surface of the fan blade can be mounted on the rotary column when in a vertical state, and the fan blade can rotate relative to the rotary column and does not depart from the rotary column when rotating less than a certain degree relative to a horizontal plane; the position of the fan blade close to the outer ring is provided with a slideway which penetrates through the upper surface and the lower surface of the fan blade, the slideway extends from the position of the fan blade close to the middle part to the position far away from the middle part to the side of the fan blade close to the fan blade and is gradually close to the outer ring of the fan blade, the inner wall of the slideway is gradually increased from the vertical state to the inclined angle, the width distance between the inner walls of the slideway is kept unchanged and is the same as the diameter of the sliding column, so that when the sliding column keeps; the outer side of the end part of the slideway close to the outer ring of the fan blade is provided with a vertically downward sealing cover; when all the fan blades are positioned in the horizontal state at the same time, the fan blades are matched with the counterweight ring to seal the fan.

Further, the fan still includes the support ring, and the support ring is located the below of flabellum, is the ring form, evenly is provided with the lug that corresponds with the spacing groove on the inner wall of support ring to make the support ring can fix the suit in the transposable lower part, gu fixed ring installs reciprocating in order to restrict the support ring at the transposable lower extreme through the screw thread, evenly is provided with the radial bracing piece of support ring along the same horizontal plane on the outer wall of support ring.

Furthermore, the sliding seat is arc-shaped and is positioned below the fan blades, the lower end of the sliding seat is provided with a limiting hole, the sliding seat can be fixedly arranged at the outer end of the supporting rod through nuts, when the fan blades are positioned in a horizontal state, the lower surfaces of the fan blades are overlapped with the upper surfaces of the sliding seat, and the sliding seat does not prevent the fan blades from rotating around the rotating column anticlockwise; the arc wall has been seted up downwards to the slide up end, and the traveller extends to in the arc wall and can slide in the arc wall round first rotary column, and the arc wall is close to the downward vertical magnetism post of installing of slide initial position department, and when the traveller was located the initial end of slide, the magnetism post just in time just inhaled with the contact of traveller bottom and mutually, and the slide is close to the slide terminal department, offers the opening of intercommunication arc wall to the counter weight ring, and the opening part is provided with vertical inclined plane, and the closing cap coincide with the opening in order to seal the opening.

Furthermore, the friction column is slidably mounted in the hole groove through a limiting nut, the friction column consists of a pushing magnetic column, a connecting sleeve, a spring and a friction ball column, and when the pushing magnetic column is in contact with the outer wall of the sliding seat, the pushing magnetic column pushes the friction ball column to extend out of the hole groove through the spring, so that the counterweight ring is rubbed with the inner wall of the machine shell; when the hole groove rotates to the opening position of the sliding seat, the magnetic column is pushed to attract the lower end of the sliding column and drive the friction ball column to enter the opening, the magnetic column is pushed to drive the outer end of the friction ball column to extend into the hole groove through the connecting sleeve, and the counterweight ring and the machine shell do not have friction force any more.

The acylation process method of tri-n-butyl citrate adopts the following technical scheme:

firstly, citric acid and n-butyl alcohol are put into a reaction kettle for acylation reaction, at the moment, a motor is in a closed state to prevent volatilization of preparation raw materials, a fan seals an air outlet of a three-way pipe, after the acylation reaction of the tri-n-butyl citrate is finished to prepare the tri-n-butyl citrate, the motor and a valve are opened, a separation tank separates and volatilizes liquid, the unvolated liquid flows into a purification tank to refine the tri-n-butyl citrate, volatilized gas and waste gas are pumped to a condensation pipe by the fan through the three-way pipe, the liquid obtained by condensation flows back to the purification tank to be purified, the rest waste gas is sent to a liquid filter box to be firstly purified in a liquid state, then sent to a solid filter box to be purified in a solid state, and then discharged to the

The invention has the beneficial effects that: the acylation process device of the tri-n-butyl citrate comprises a fan, a motor, a purification device, a reaction kettle, a condenser, a liquid filter tank, a solid filter tank and a separation tank, wherein when the citric acid and the n-butyl alcohol are subjected to acetylation reaction, the motor is turned off, a waste gas channel is turned off by the fan to prevent the n-butyl alcohol from volatilizing, after the acylation reaction of the citric acid and the n-butyl alcohol is completed, the motor is turned on, the fan blows air to the channel, the discharge of waste gas after the acylation reaction is accelerated, the waste gas treatment is accelerated, the purification preparation efficiency of the tri-n-butyl citrate is improved, the fan is automatically turned on and off, the frequent operation of preparation personnel is reduced, and the work efficiency is improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic diagram showing the overall structure of an embodiment of a process apparatus for acylating tri-n-butyl citrate according to the present invention;

FIGS. 2, 4, 7 and 8 are three-dimensional structural views of the fan when it is turned off;

FIGS. 3, 5, 6, and 9 are three-dimensional structural views of the blower when turned on;

FIG. 10 is a three-dimensional block diagram of a blower;

FIGS. 11 and 12 are two-dimensional planing views of the fan;

FIG. 13 is a three-dimensional structural view of the slider;

FIG. 14 is a three-dimensional block diagram of a fan blade;

FIG. 15 is a three-dimensional structural view of a friction column.

In the figure: 1. a flange; 2. a first bevel gear; 3. a bearing support seat; 4. a hole groove; 5. rotating; 6. a gland; 7. a first rotating shaft; 8. a connecting rod; 9. a traveler; 10. a fan blade; 11. a counterweight ring; 12. a second rotating shaft; 13. a second bevel gear; 14. a bearing mounting groove; 15. a third rotating shaft; 16. a housing; 17. a friction column; 18. a slide base; 19. a fixing ring; 20. a support bar; 21. a support ring; 22. a slideway; 23. a magnetic column; 24. a nut; 25. sealing the cover; 26. a limit bolt; 27. a limit nut; 28. a limiting groove; 29. a bump; 30. a boss; 31. turning the column; 32. pushing the magnetic column; 33. connecting sleeves; 34. a spring; 35. a friction ball column; 36. an arc-shaped slot; 37. an opening; 38. a limiting hole; 39. mounting grooves; 40. a bottom groove; 41. a bevel; 101. a fan; 102. a motor; 103. a purification device; 104. a first communication pipe; 105. a valve; 106. a reaction kettle; 107. a condenser; 108. a pipeline; 109. a liquid filter tank; 110. a solid state filtration tank; 111. a separation tank; 112. a three-way pipe.

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.

The invention discloses an acylation process device and an acylation process method of tri-n-butyl citrate, and the process device comprises a fan 101, a motor 102, a purification device 103, a reaction kettle 106, a condenser 107, a liquid filter tank 109, a solid filter tank 110 and a separation tank 111. The fan 101 comprises fan blades 10, a first rotating shaft 7, a connecting rod 8, a counterweight ring 20, a spiral column 24, a spiral sleeve 25, a first connecting rod 27, a rotary seat 32, a limiting bolt 33, a second connecting rod 35, a machine shell 43 and the like.

As shown in fig. 1-15, a casing 16 of the blower 101 is cylindrical, flanges 1 are arranged at the upper and lower ends of the casing 16, and the two flanges 1 are respectively and fixedly connected with an air outlet of a three-way valve 112 and an air inlet of a condenser 107; the lower part of the machine shell 16 is provided with a bearing support seat 3, and the wall of the machine shell 16 below the bearing support seat 3 is provided with a bearing installation groove 14.

Second pivot 12 passes through the bearing rotatable installation on bearing support seat 3, first bevel gear 2 is installed to 12 lower extremes of second pivot, 12 upper ends of second pivot and swivel mount 5 fixed connection, the round hole has been seted up at swivel mount 5 top center, round hole wall upper end and 6 screw-thread fit of gland, the upper portion outer wall of swivel mount 5 is regular pentagon, all be provided with rotary column 31 on the same horizontal plane of intermediate position of every vertical face of swivel mount 5, the vertical boss 30 that is provided with longitudinal symmetry in rotary column 31's the outermost end, flabellum 10 is installed on rotary column 31, and prevent to drop under boss 30's effect. The lower part of the swivel mount 5 is a cylinder, vertical limiting grooves 2 are uniformly distributed in the circumferential direction and used for installing and limiting the rotation of the support ring 21, a fixing ring 19 is arranged at the lower end of the swivel mount 5, and the fixing ring 19 is in threaded connection with the swivel mount 5.

The first rotating shaft 7 is rotatably installed in a central circular hole of the rotating base 5, a threaded hole is formed in the bottom end of the first rotating shaft and used for installing a limiting bolt 26, the gland 6 is fixed above the limiting bolt 26 and used for limiting the first rotating shaft 7 to move up and down but not limiting the first rotating shaft 7 to rotate relative to the rotating base 5, 5 connecting rods 8 which are located on the same horizontal plane and extend along the radial direction of the first rotating shaft 7 are uniformly arranged on the upper portion of the first rotating shaft 7, a counterweight ring 11 is fixedly connected below the outermost end of each connecting rod 8, a sliding column 9 vertically extends downwards and is close to the outer end of each connecting rod 8, and each sliding column 9 is a smooth cylinder with magnetism; the counterweight ring 11 is circular ring shaped, the outer wall contacts with the casing 16 but does not generate friction, 5 hole grooves 4 towards the center of the ring are evenly arranged on the same horizontal plane of the counterweight ring, the hole grooves 4 are positioned under the connecting rod 8, a friction column 17 is arranged in the hole grooves 4, and one end of the friction column 17, which is close to the outer wall of the counterweight ring 11, extends out of the hole grooves 4 to be in friction contact with the inner wall of the casing 16.

The middle part of the inner ring of the fan blade 10 is provided with an installation groove 39 with an upper slideway and a lower slideway and a bottom groove 40 communicated with the installation groove 39, the bottom groove 40 is meshed with the boss 30 to limit the sliding of the installation groove 39 and the boss, so that the blade surface of the fan blade 10 can be installed on the rotary column 31 when being in a vertical state, and when the fan blade 10 rotates for less than 90 degrees relative to the horizontal plane, the fan blade 10 can rotate relative to the rotary column 31 and does not depart from the rotary column 31; a slideway 22 penetrating through the upper surface and the lower surface of the fan blade is formed in the position, close to the outer ring, of the fan blade 10, the slideway 22 extends from the position, close to the middle part, of the fan blade 10 to the position, far away from the middle part, of the fan blade, is close to one side of the fan blade 10 and is gradually close to the outer ring of the fan blade 10, the inner wall of the slideway 22 is gradually increased from a vertical state to an inclined angle, the width distance between the inner walls of the slideway 22 is kept unchanged and is the same as the diameter of the sliding column 9, so that when the; the outer side of the end part of the slideway 22 close to the outer ring of the fan blade 10 is provided with a vertically downward sealing cover 25; when 5 flabellums are simultaneously positioned in a horizontal state, the 5 flabellums are matched with the counterweight ring 11 to seal the fan 101.

The support ring 21 is located below the fan blade 10 and is in a circular ring shape, the inner wall of the support ring 21 is uniformly provided with a bump 29 corresponding to the limiting groove 28, so that the support ring 21 can be fixedly sleeved on the lower part of the swivel base 5, and the fixing ring 19 is installed at the lower end of the swivel base 5 through threads to limit the up-and-down movement of the support ring 21. The outer wall of the support ring 21 is uniformly provided with 5 support bars 20 along the radial direction of the support ring 21 on the same horizontal plane.

The sliding base 18 is arc-shaped and is positioned below the fan blade 10, the lower end of the sliding base is provided with a limiting hole 38, the sliding base can be fixedly arranged at the outer end of the supporting rod 20 through a nut 24, when the fan blade is positioned in a horizontal state, the lower surface of the fan blade 10 is overlapped with the upper surface of the sliding base 18, and the sliding base 18 does not prevent the fan blade 10 from rotating around the rotating column 31 anticlockwise; slide 18 upper end face has seted up arc wall 36 downwards, traveller 9 extends to in the arc wall 36 and can slide in arc wall 36 round first pivot post 7, arc wall 36 is close to slide 22 initial end position department and is down vertically installed magnetic pillar 23, when traveller 9 is the initial end of slide 22, magnetic pillar 23 just in time contacts and attracts mutually with traveller 9 bottom, slide 18 is close to slide 22 terminal department, set up the opening 37 that communicates arc wall 36 to counter weight ring 11, opening 37 department is provided with vertical inclined plane 41, closing cap 25 coincide with opening 37 and seals opening 37.

The friction column 17 is slidably mounted in the hole groove 4 through a limit nut 27, the friction column 17 is composed of a pushing magnetic column 32, a connecting sleeve 33, a spring 34 and a friction ball column 35, when the pushing magnetic column 32 is in contact with the outer wall of the sliding seat 18, the pushing magnetic column 32 pushes the friction ball column 35 to extend out of the hole groove 4 through the spring 34, and the counterweight ring 11 is made to rub against the inner wall of the machine shell 16; when the hole slot 4 rotates to the position of the opening 37 of the slide seat 18, the pushing magnetic column 32 is attracted with the lower end of the slide column 9 and drives the friction ball column 35 to enter the opening 37, at this time, the pushing magnetic column drives the outer end of the friction ball column 35 to extend into the hole slot 4 through the connecting sleeve 33, and the counterweight ring 11 and the machine shell 16 do not have friction any more.

In this embodiment, the blower 101 further includes a third rotating shaft 15, the third rotating shaft 15 is sleeved in the bearing mounting seat 14 through a bearing, one end of the third rotating shaft 14 located in the casing 16 is fixedly mounted with a second bevel gear 13, the second bevel gear 13 is meshed with the first bevel gear 2, the other end of the third rotating shaft 15 is connected with an output end of the motor 102, and when the motor 102 is turned on, the second rotating shaft 12 can be driven to rotate.

In this embodiment, the bottom of the reaction kettle 106 is connected to the lower separation tank 111 through a first connection pipe 104, the first connection pipe 104 is provided with a valve 105 to control the opening and closing of the first connection pipe 104, the side walls of the reaction kettle 106 and the separation tank 111 are both provided with pipe ports to connect a three-way pipe 112, the lower portion of the separation tank 111 is connected to the purification device 103, the third port of the three-way pipe 101 is connected to one end of a fan 101, the other end of the fan 101 is connected to an inlet of a condenser 107, one end of a pipe 108 is connected to an outlet of the condenser 107, the other end is inserted into the liquid level of a liquid filter tank 109, the liquid filter tank 109 is connected to a solid filter tank 110 through a pipe, and the liquid purified exhaust gas is further processed.

When the motor 102 is not turned on, the fan 101 is in a closed state, when the motor 102 is turned on, the second rotating shaft 12 instantaneously drives the rotating base 5 to rotate clockwise, due to inertia of the counterweight ring 11 and friction force between the counterweight ring 11 and the inner wall of the casing 16, the counterweight ring 11 generates lag relative to the rotating base 5, the counterweight ring 11 drives the connecting rod 8 and the first rotating shaft 7 to rotate counterclockwise relative to the rotating base 5, the connecting rod 8 drives the sliding column 9 to slide from the initial end of the sliding way 22 to the end of the sliding way 22, meanwhile, the fan blade 10 rotates around the rotating column 31 to an open air supply state, the pushing magnetic column 32 of the friction column 17 enters the opening 37 of the sliding base 18, the pushing magnetic column 32 and the sliding column 9 attract each other and pulls the friction ball column 35 to the hole slot 4, friction between the counterweight ring 11 and the inner wall of the casing 16 is removed, the fan 101 starts to normally operate, and one side of the fan blade 10, which is matched with, so that the slide way 22 presses the slide post 9 outwards, and the slide way 22 and the slide post 9 are in a locked state because the side wall of the slide way 22 is an inclined surface with gradually increasing inclination, and the fan blade 10 does not rotate around the rotary post 31 any more. When the motor 102 is unstable in voltage and the rotating speed is unstable, the attraction force between the pushing magnetic pillar 32 and the sliding pillar 9 can avoid the situation that the fan blade 10 rotates caused by the clockwise rotation of the counterweight ring 11 relative to the rotating seat 5.

When the motor 102 is turned off, the second rotating shaft 12 drives the rotating base 5 and the fan blades 10 to stop rotating rapidly, due to the inertia of the counterweight ring 11, the counterweight ring 11 will drive the connecting rod 8 and the first rotating shaft 7 to rotate clockwise relative to the rotating base 5, the connecting rod 8 drives the sliding column 9 to slide from the tail end of the sliding column 22 to the initial end of the sliding column 22, the sliding column 22 of the fan blades 10 is adapted to rotate around the rotating column 31 to the closed position, the fan blades 10 drive the sealing cover 25 to gradually tilt downwards to seal the opening 41 of the sliding base 18, the gradually inclined surface 41 separates the pushing magnetic column 32 from the tail end of the sliding column 9, the pushing magnetic column 32 slides from the outer wall of the sliding base 18, the counterweight ring 11 and the inner wall of the casing 16 obtain friction force, play a role in buffering the relative rotation of the counterweight ring 11 relative to the rotating base 5, the magnetic column 23 attracts the lower end of the sliding column 9, so that the sliding column 9 slides to the initial end, the outlet of the tee 112 is closed.

The invention relates to an acylation process method of tri-n-butyl citrate, which comprises the steps of firstly putting citric acid and n-butyl alcohol into a reaction kettle 106 for acylation reaction, closing a motor 102 at the moment, preventing volatilization of preparation raw materials, sealing an air outlet of a three-way pipe 112 by a fan 101, opening the motor 102 and a valve 105 after the acylation reaction of the tri-n-butyl citrate is finished to prepare the tri-n-butyl citrate, separating and volatilizing liquid by a separation tank 111, allowing the non-volatilized liquid to flow into a purification tank 130 to refine the tri-n-butyl citrate, pumping the volatilized gas and waste gas to a condensation pipe by the fan 101 through the three-way pipe 112, refluxing the condensed liquid to the purification tank 103 for purification, conveying the rest waste gas to a liquid filter tank 109 for liquid purification, then conveying to a solid filter tank 110 for solid purification, and then discharging to the atmosphere.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.