CN219232203U - Continuous reaction device for preparing benzyl acetate - Google Patents
Continuous reaction device for preparing benzyl acetate Download PDFInfo
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- CN219232203U CN219232203U CN202320545912.1U CN202320545912U CN219232203U CN 219232203 U CN219232203 U CN 219232203U CN 202320545912 U CN202320545912 U CN 202320545912U CN 219232203 U CN219232203 U CN 219232203U
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Abstract
The utility model discloses a continuous reaction device for preparing benzyl acetate, which belongs to the technical field of benzyl acetate preparation equipment and aims at solving the problems that a scraping plate is fixedly connected with a stirring shaft of a stirring kettle type reactor, so that the scraping plate can continuously scratch and rub the inner wall of the reactor no matter the stirring is carried out by a stirrer or the inner wall is cleaned, and the inner wall of the reactor is seriously easy to wear for a long time in the past, and the continuous reaction device comprises a reactor main body, a feeding pipe, a discharging pipe communicated and fixed at the bottom end of the reactor main body and a cleaning type mixing mechanism arranged in the reactor main body; according to the utility model, the pressure supply part, the elastic guide part and the push-pull rod are arranged, so that the scraping plate is in non-fixed connection with the first stirring shaft and the second stirring shaft, the scraping plate is conveniently separated from the inner wall of the reactor main body when raw materials are stirred, and further, the phenomenon that the inner wall of the reactor main body is continuously scraped and rubbed when the stirring main rod is stirred or the inner wall is cleaned, so that the inner wall of the reactor main body is seriously worn is avoided.
Description
Technical Field
The utility model belongs to the technical field of benzyl acetate preparation equipment, and particularly relates to a continuous reaction device for preparing benzyl acetate.
Background
At present, the industrial benzyl acetate reaction is mainly carried out in a stirred tank reactor, benzyl ether and acetic anhydride are used as synthesis raw materials, solid acid is used as a catalyst, and the benzyl acetate and the solid acid are continuously stirred and mixed, so that continuous esterification reaction is carried out to generate the benzyl acetate.
In the prior art, when benzyl acetate is subjected to continuous reaction in a stirred tank reactor, a large amount of raw materials are adhered to the inner wall of the stirred tank reactor, so that the raw materials are difficult to take completely in later material taking, a scraping plate is generally arranged on a stirring shaft of the stirred tank reactor in the prior art, the raw materials adhered to the inner wall of the reactor are continuously scraped and rubbed by the scraping plate when the raw materials are taken conveniently by using the scraping plate, the adhered raw materials can smoothly flow out from a material outlet end, and the utilization rate of the raw materials is increased;
however, from practical point of view, the scraping plate is generally fixedly connected with the stirring shaft, so that the scraping plate can continuously scratch and rub the inner wall of the reactor no matter the stirring shaft is used for stirring or the inner wall is cleaned, and the inner wall of the reactor is seriously easily worn for a long time in the past, so that the service life of the reactor is reduced.
Therefore, a continuous reaction device for preparing benzyl acetate is needed, and the problems that a scraping plate is fixedly connected with a stirring shaft of a stirring kettle type reactor in the prior art, so that the scraping plate can be continuously scraped and rubbed with the inner wall of the reactor no matter when the stirring is carried out by a stirrer or the inner wall is cleaned, and the inner wall of the reactor is seriously easy to wear in the long-term past are solved.
Disclosure of Invention
The utility model aims to provide a continuous reaction device for preparing benzyl acetate, which solves the problems in the background technology.
In order to achieve the above purpose, the present utility model provides the following technical solutions: a continuous reaction device for preparing benzyl acetate comprises a reactor main body, a feed pipe communicated and fixed at the top end of the reactor main body, a discharge pipe communicated and fixed at the bottom end of the reactor main body and a clean mixing mechanism arranged in the reactor main body;
the cleaning type mixing mechanism comprises a stirring main rod, a plurality of scrapers and a driving part, wherein the stirring main rod is vertically arranged on the inner wall of the top end of the reactor main body in a cavity in a rotating mode, the scrapers are arranged outside the stirring main rod in a surrounding mode and are attached to the inner wall of the reactor main body, the driving part is arranged at the top of the reactor main body, two groups of first stirring shafts which are vertically symmetrically distributed and are vertically fixed on the stirring main rod body are arranged between the stirring main rod and the scrapers, and a second stirring shaft which is vertically fixed on the stirring main rod body is arranged between the two first stirring shafts;
the cleaning type mixing mechanism further comprises an elastic guide part arranged in the inner cavity of the first stirring shaft, a push-pull rod arranged in the inner side of the second stirring shaft in a sliding manner, and a pressure supply part arranged in the inner cavity of the stirring main rod, wherein one end of the push-pull rod penetrates out of the second stirring shaft and is fixedly connected with the scraping plate vertically.
In the scheme, the rotation driving component comprises a rotation supplying cylinder, a driving motor and a driving gear, wherein the rotation supplying cylinder is arranged in the inner wall of the top of the reactor body, the driving motor is arranged on the top surface of the reactor body, the driving gear is fastened and sleeved on the shaft body of the output shaft of the driving motor, the bottom end of the rotation supplying cylinder is fixedly connected with the stirring main rod, and the rotation supplying cylinder is positioned on the cylinder body above the reactor body and is fastened and sleeved with a driven gear meshed with the driving gear.
It is further worth to say that the pressure supply part includes that be circular cone slide set up in extrusion piece in the stirring mobile jib inner chamber, two symmetries are fixed in stationary blade on the stirring mobile jib inner wall and be fixed in the stationary blade with telescopic link between the extrusion piece top surface, the other end of push-and-pull rod is hemisphere form and penetrates in the inner chamber of stirring mobile jib with the whole body of extrusion piece offsets.
The elastic guide part comprises a movable plate arranged in the inner side of the first stirring shaft in a sliding manner and a guide rod vertically fixed on one surface of the movable plate, wherein the tail end of the guide rod penetrates out of the first stirring shaft and is fixedly connected with the scraping plate, and a spring is fixedly connected between the other surface of the movable plate and the inner wall of the innermost side of the first stirring shaft.
As a preferable implementation mode, the top end of the rotary cylinder is penetrated with a threaded push rod rotationally connected with the extrusion block, and a threaded sleeve fixed with the inside of the rotary cylinder is connected with the rod body of the threaded push rod in a threaded manner.
As a preferable implementation mode, a hand wheel is fastened and sleeved on a rod body at the top of the threaded push rod, and an anti-slip pad is glued on the outer wall of the hand wheel.
Compared with the prior art, the continuous reaction device for preparing the benzyl acetate provided by the utility model at least has the following beneficial effects:
(1) Through the setting of pressure supply part, elastic guide part and push-and-pull rod for non-fixed connection between scraper blade and first (mixing) shaft and the second (mixing) shaft, make things convenient for the scraper blade to separate with reactor main part inner wall when raw materials stirring, avoid the scraper blade to stir or the inner wall is clean when stirring the mobile jib then, continuously scrape and rub the reactor main part inner wall, cause the serious wearing and tearing of reactor main part inner wall.
(2) Through the setting of telescopic link, at the in-process that the extrusion piece goes up and down, the telescopic link can stretch out and draw back the regulation in step, prescribes a limit to the removal orbit of extrusion piece effectively then, guarantees the stationarity when extrusion piece activity.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the present utility model;
FIG. 2 is a schematic view of the internal structure of the present utility model;
fig. 3 is a schematic structural view of a cleaning type mixing mechanism according to the present utility model.
In the figure: 1. a reactor body; 2. a spring; 3. a feed pipe; 4. a discharge pipe; 5. a stirring main rod; 6. a first stirring shaft; 7. a second stirring shaft; 8. a supply drum; 9. a driven gear; 10. a driving motor; 11. a drive gear; 12. a scraper; 13. a push-pull rod; 14. extruding a block; 15. a threaded push rod; 16. a thread sleeve; 17. a fixing piece; 18. a telescopic rod; 19. a guide rod; 20. and a movable piece.
Detailed Description
The utility model is further described below with reference to examples.
Referring to fig. 1-3, the present utility model provides a continuous reaction apparatus for preparing benzyl acetate, comprising a reactor main body 1, a feed pipe 3 communicated and fixed at the top end of the reactor main body 1, a discharge pipe 4 communicated and fixed at the bottom end of the reactor main body 1, and a clean mixing mechanism arranged in the reactor main body 1, wherein the discharge pipe 4 is provided with a valve diagram which is not visible;
the cleaning type mixing mechanism comprises a stirring main rod 5, a plurality of scraping plates 12 and a driving part, wherein the stirring main rod 5 is vertically arranged on the inner wall of the top end of the reactor main body 1 in a cavity in a rotating mode, the scraping plates 12 are arranged outside the stirring main rod 5 in a surrounding mode and are attached to the inner wall of the reactor main body 1, the driving part is arranged at the top of the reactor main body 1, two groups of first stirring shafts 6 which are vertically symmetrically distributed and are vertically fixed on the rod body of the stirring main rod 5 are arranged between the stirring main rod 5 and the scraping plates 12, and a second stirring shaft 7 which is vertically fixed on the rod body of the stirring main rod 5 is arranged between the two first stirring shafts 6;
through the arrangement of the stirring main rod 5, the first stirring shaft 6 and the second stirring shaft 7, when in use, an operator can input raw materials required by benzyl acetate to be produced into the inner side of the reactor main body 1 in advance through the feed pipe 3, then the stirring main rod 5 is controlled by the rotation driving component to continuously rotate in the inner cavity of the reactor main body 1, and then the stirring main rod 5 can drive the first stirring shaft 6 and the second stirring shaft 7 to fully stir the raw materials in the reactor main body 1, so that the raw materials required by reaction are fully mixed with each other, esterification reaction is continuously carried out, and benzyl acetate is finally generated;
in the process of continuously rotating the stirring main rod 5, the scraping plate 12 can continuously scrape the inner wall of the reactor main body 1, and then in the later period, when the valve of the discharging pipe 4 is opened to take the benzyl acetate in the reactor main body 1, the scraping plate 12 scrapes the raw materials adhered on the inner wall of the reactor main body 1, so that the raw materials can smoothly flow out from the discharging end, and the utilization rate of the benzyl acetate is increased;
further, as shown in fig. 1 and 2, it is worth to be noted that the rotation driving component includes a rotation supplying drum 8, a driving motor 10 and a driving gear 11, wherein the rotation supplying drum 8 is arranged in the inner wall of the top of the reactor main body 1 in a cavity, the driving motor 10 is installed on the top surface of the reactor main body 1 through a bracket, the driving gear 11 is fastened and sleeved on the shaft body of the output shaft of the driving motor 10, the bottom end of the rotation supplying drum 8 is fixedly connected with the stirring main rod 5, and the driven gear 9 meshed with the driving gear 11 is fastened and sleeved on the drum body, above the reactor main body 1, of the rotation supplying drum 8;
the driving motor 10 is started, the output shaft of the driving motor 10 drives the driving gear 11, and the driving gear 11 is meshed with the driven gear 9, so that the rotary drum 8 is forced to carry the stirring main rod 5 to rotate, and the first stirring shaft 6 and the second stirring shaft 7 are driven to sufficiently stir raw materials in the inner cavity of the reactor main body 1.
In the above embodiment, although the scraper 12 is used to facilitate the later-stage material taking manually, the utilization rate of benzyl acetate is increased, most of the scraper 12 is generally fixedly connected with the first stirring shaft 6 or the second stirring shaft 7 at present, so that the scraper 12 is continuously scraped and rubbed against the inner wall of the reactor main body 1 no matter when the stirring main rod 5 is used for stirring or cleaning the inner wall, the inner wall of the reactor main body 1 is seriously easily worn for a long time, and the service life of the reactor main body 1 is further reduced;
in view of this, as shown in fig. 2 and 3, it should be noted that the cleaning type mixing mechanism further includes an elastic guiding component disposed in the inner cavity of the first stirring shaft 6, a push-pull rod 13 slidably disposed in the inner side of the second stirring shaft 7, and a pressure-supplying component disposed in the inner cavity of the stirring main rod 5, where one end of the push-pull rod 13 penetrates out of the second stirring shaft 7 and is vertically fixed to the scraper 12;
through the arrangement of the pressure supply component, the elastic guide component and the push-pull rod 13, when the raw material solution in the reactor main body 1 needs to be mixed and stirred, the pressure supply component reduces the extrusion force of the push-pull rod 13, then the scraping plate 12 can be rapidly separated from the reactor main body 1 under the action of the elasticity of the elastic guide component, otherwise, when the raw material on the inner wall of the reactor main body 1 needs to be scraped and rubbed, the pressure supply component increases the extrusion force of the push-pull rod 13, the push-pull rod 13 extends outwards from the inner side of the second stirring shaft 7 to extrude the scraping plate 12, the scraping plate 12 is caused to be contacted with the inner wall of the reactor main body 1, the scraping plate 12 can normally scrape the inner wall of the reactor main body 1 in the rotation process of the stirring main rod 5, and therefore, the pressure supply component, the elastic guide component and the push-pull rod 13 are mutually configured, the scraping plate 12 can be conveniently separated from the inner wall of the reactor main body 1 when the raw material is stirred, and then the scraping plate 12 is prevented from continuously scraping the inner wall of the reactor main body 1 when the stirring or the inner wall is cleaned, and the inner wall of the reactor main body 1 is seriously abraded.
Next, as shown in fig. 3, it should be noted that the pressure-supplying component includes a conical extrusion block 14 slidably disposed in the inner cavity of the stirring main rod 5, two fixing plates 17 symmetrically fixed on the inner wall of the stirring main rod 5, and a telescopic rod 18 fixed between the fixing plates 17 and the top surface of the extrusion block 14, and the other end of the push-pull rod 13 is hemispherical and penetrates into the inner cavity of the stirring main rod 5 to prop against the whole body of the extrusion block 14;
the elastic guide part comprises a movable plate 20 arranged in the inner side of the first stirring shaft 6 in a sliding manner and a guide rod 19 vertically fixed on one surface of the movable plate 20, the tail end of the guide rod 19 penetrates out of the first stirring shaft 6 and is fixedly connected with the scraping plate 12, and a spring 2 is fixedly connected between the other surface of the movable plate 20 and the innermost inner wall of the first stirring shaft 6;
through the arrangement of the extrusion block 14, the guide rod 19, the movable piece 20 and the spring 2, the extrusion block 14 is controlled to move downwards, the extrusion block 14 can implement extrusion force on the push-pull rod 13, the push-pull rod 13 is extruded to continuously extend outwards from the inner side of the second stirring shaft 7 and push the scraping plate 12, in the synchronization process, the movable piece 20 can be pulled by the guide rod 19 to enable the movable piece 20 to slide on the inner side of the first stirring shaft 6 and stretch the spring 2 to deform, otherwise, the extrusion block 14 is controlled to move upwards, when extrusion on the push-pull rod 13 is reduced, the movable piece 20 can reversely pull the scraping plate 12 under the action of resilience force of the spring 2 by utilizing the guide rod 19, and the scraping plate 12 is enabled to be rapidly separated from the inner wall of the reactor main body 1;
through the setting of telescopic link 18, at the in-process that extrusion piece 14 rose, telescopic link 18 can stretch out and draw back the regulation in step, and then inject extrusion piece 14's moving track effectively, guarantee extrusion piece 14 stationarity when moving.
Further, as shown in fig. 2 and 3, it should be noted that a threaded push rod 15 rotationally connected to the extrusion block 14 is penetrated at the top end of the drum 8, and a threaded sleeve 16 fixed to the inside of the drum 8 is screwed on the shaft of the threaded push rod 15;
through the setting of screw thread push rod 15 and thread bush 16, knob screw thread push rod 15, screw thread push rod 15 can wear to contract in supplying rotary drum 8 inside at the effect of helicitic texture, can then effectively carry out push-and-pull operation to extrusion piece 14, controls extrusion piece 14 and goes up and down in stirring mobile jib 5 inboard.
Further, as shown in fig. 1-3, it should be noted that a hand wheel is fastened and sleeved on the rod body at the top of the threaded push rod 15, and an anti-slip pad is glued on the outer wall of the hand wheel, which is not seen;
through the setting of hand wheel, twist the hand wheel, conveniently control screw thread push rod 15 rotation to utilize the slipmat, can increase the frictional force between personnel's hand and the hand wheel outer wall relatively, avoid torsion to appear the slippage
To sum up: through the setting of pressure supply part, elasticity guide part and push-and-pull rod 13 for non-fixed connection between scraper blade 12 and first (mixing) shaft 6 and the second (mixing) shaft 7, make things convenient for scraper blade 12 and reactor main part 1 inner wall separation when the raw materials stirring, avoid then that scraper blade 12 is in stirring of stirring mobile jib 5 or when the inner wall is clean, continuously cut and scratch reactor main part 1 inner wall, cause the serious wearing and tearing of reactor main part 1 inner wall.
Claims (6)
1. The continuous reaction device for preparing benzyl acetate is characterized by comprising a reactor main body (1), a feed pipe (3) communicated and fixed at the top end of the reactor main body (1), a discharge pipe (4) communicated and fixed at the bottom end of the reactor main body (1) and a clean mixing mechanism arranged in the reactor main body (1);
the cleaning type mixing mechanism comprises a stirring main rod (5) which is vertically arranged on the inner wall of the top end of the reactor main body (1) in a cavity in a rotating mode, a plurality of scraping plates (12) which are arranged outside the stirring main rod (5) in a surrounding mode and are attached to the inner wall of the reactor main body (1) and a driving part which is arranged at the top of the reactor main body (1), two groups of first stirring shafts (6) which are symmetrically distributed up and down and are vertically fixed on the rod body of the stirring main rod (5) are arranged between the stirring main rod (5) and the scraping plates (12), and a second stirring shaft (7) which is vertically fixed on the rod body of the stirring main rod (5) is arranged between the two first stirring shafts (6);
the cleaning type mixing mechanism further comprises an elastic guide part arranged in the inner cavity of the first stirring shaft (6), a push-pull rod (13) arranged in the inner side of the second stirring shaft (7) in a sliding manner and a pressure supply part arranged in the inner cavity of the stirring main rod (5), and one end of the push-pull rod (13) penetrates out of the second stirring shaft (7) and is fixedly connected with the scraping plate (12) vertically.
2. A continuous reaction apparatus for producing benzyl acetate according to claim 1, wherein: the rotary driving component comprises a rotary feeding cylinder (8) arranged in the inner wall of the top of the reactor main body (1) in a cavity rotating mode, a driving motor (10) arranged on the top surface of the reactor main body (1) and a driving gear (11) fixedly sleeved on the shaft body of an output shaft of the driving motor (10), the bottom end of the rotary feeding cylinder (8) is fixedly connected with the stirring main rod (5), and a driven gear (9) meshed with the driving gear (11) is fixedly sleeved on the cylinder body, above the reactor main body (1), of the rotary feeding cylinder (8).
3. A continuous reaction apparatus for producing benzyl acetate according to claim 2, characterized in that: the pressure supply part comprises an extrusion block (14) which is arranged in the inner cavity of the stirring main rod (5) in a conical sliding manner, two fixing sheets (17) which are symmetrically fixed on the inner wall of the stirring main rod (5) and a telescopic rod (18) which is fixed between the fixing sheets (17) and the top surface of the extrusion block (14), wherein the other end of the push-pull rod (13) is hemispherical and penetrates into the inner cavity of the stirring main rod (5) to prop against the whole body of the extrusion block (14).
4. A continuous reaction apparatus for producing benzyl acetate according to claim 1, wherein: the elastic guide component comprises a movable piece (20) arranged in the inner side of the first stirring shaft (6) in a sliding manner and a guide rod (19) vertically fixed on one surface of the movable piece (20), the tail end of the guide rod (19) penetrates out of the first stirring shaft (6) and is fixedly connected with the scraping plate (12), and a spring (2) is fixedly connected between the other surface of the movable piece (20) and the innermost inner wall of the first stirring shaft (6).
5. A continuous reaction apparatus for producing benzyl acetate according to claim 3 wherein: the top of the rotary drum (8) is penetrated with a threaded push rod (15) rotationally connected with the extrusion block (14), and a threaded sleeve (16) fixed inside the rotary drum (8) is connected with the rod body of the threaded push rod (15) in a threaded manner.
6. A continuous reaction apparatus for preparing benzyl acetate according to claim 5, wherein: a hand wheel is fastened and sleeved on a rod body at the top of the threaded push rod (15), and an anti-slip pad is glued on the outer wall of the hand wheel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320545912.1U CN219232203U (en) | 2023-03-20 | 2023-03-20 | Continuous reaction device for preparing benzyl acetate |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320545912.1U CN219232203U (en) | 2023-03-20 | 2023-03-20 | Continuous reaction device for preparing benzyl acetate |
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| CN219232203U true CN219232203U (en) | 2023-06-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202320545912.1U Active CN219232203U (en) | 2023-03-20 | 2023-03-20 | Continuous reaction device for preparing benzyl acetate |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116808674A (en) * | 2023-08-28 | 2023-09-29 | 新乡市中汇过滤技术有限公司 | Slurry filter |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116808674A (en) * | 2023-08-28 | 2023-09-29 | 新乡市中汇过滤技术有限公司 | Slurry filter |
| CN116808674B (en) * | 2023-08-28 | 2023-11-28 | 新乡市中汇过滤技术有限公司 | Slurry filter |
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