CN115837193A

CN115837193A - Production device and method for producing high-purity durene by using centrifugal method

Info

Publication number: CN115837193A
Application number: CN202211342651.XA
Authority: CN
Inventors: 胡忠伟; 唐政; 刘锁平; 谈明初; 谈勇; 谈俊
Original assignee: Lianyungang Pengchen Special New Material Co ltd
Current assignee: Lianyungang Pengchen Special New Material Co ltd
Priority date: 2022-10-31
Filing date: 2022-10-31
Publication date: 2023-03-24
Anticipated expiration: 2042-10-31
Also published as: CN115837193B

Abstract

The invention belongs to the field of high-purity durene preparation, and particularly relates to a device and a method for producing high-purity durene by using a centrifugal method, wherein the device comprises a device shell, a servo motor is fixedly connected to the top end surface of the device shell, the output end of the servo motor is connected with a connecting shaft, the connecting shaft is rotatably connected to the top end inside the device shell, a rubber rotating wheel and a first circular gear are fixedly connected to the connecting shaft, a second circular gear is meshed and connected to the first circular gear, the second circular gear is installed on a centrifugal assembly, a fixed screen plate is fixedly connected inside the device shell, and a transfer assembly is installed at the bottom end of the device shell, so that the problem that the conventional filter device is inconvenient to carry out convenient and stable defoaming work on filter cloth is solved, and the subsequent centrifugal filter work is influenced by excessive accumulation of bubbles; and the problem that the filter cloth is inconvenient to be conveniently and stably sealed, installed, disassembled and replaced by the conventional filter device is solved.

Description

Production device and method for producing high-purity durene by using centrifugal method

Technical Field

The invention relates to the field of high-purity durene preparation, in particular to a production device and a method for producing high-purity durene by using a centrifugal method.

Background

Durene (1, 2,4, 5-tetramethylbenzene) is a main raw material for producing pyromellitic dianhydride, and the existing methods for producing durene mainly comprise a synthesis method and a separation method, wherein purification of durene enriched liquid enriched by rectification from C10 heavy aromatic hydrocarbon is still the most main source of durene, while the traditional method for separating C10 aromatic hydrocarbon needs various processes such as freezing crystallization, centrifugation, squeezing and the like, the process is complex, the product quality is unstable, the yield and the purity of the obtained durene are low, so a more reasonable separation and purification method is needed, components contained in the C10 heavy aromatic hydrocarbon mainly comprise durene, isomers and adjacent homologues thereof, the composition characteristics are that the difference of boiling points is small, the structure of the durene is special, so that the melting point of the durene is obviously higher than that of the impurities, the crystallization separation method is a feasible method, the separation of durene crystals is carried out by a centrifugal filtration process by using filter cloth in a centrifugal filtration device after freezing crystallization, the separation of the durene crude durene product obtained is usually from 50 to 85%, and the high purity of the durene obtained by centrifugation and squeezing is needed subsequently.

When the existing filtering device utilizes the filter cloth to separate and filter turbid liquid formed by mixing the refrigerated and crystallized durene crystals and the mother liquor, the filter cloth is inconvenient to carry out convenient and stable defoaming treatment, so that the turbid liquid is easy to generate bubbles on the filter cloth, and the subsequent centrifugal filtering work is influenced due to the excessive accumulation of the bubbles; and current filter equipment is inconvenient to carry out convenient stable seal installation and dismantlement change work to the filter cloth, and then can not guarantee the stability of the long-time filter effect of filter cloth, can not carry out convenient stable categorised collection work to the homofour filtrating of filtering and the mixture that obtains durene and mother liquor simultaneously, and the practicality is relatively poor, and work efficiency is lower, consequently needs to provide a apparatus and the method for producing high-purity durene of utilization centrifugation method and satisfies user's demand.

Disclosure of Invention

The invention is provided in view of the problems of the existing production device and method for producing high-purity durene by using a centrifugal method.

To solve the above technical problem, according to an aspect of the present invention, the present invention provides the following technical solutions: the production device comprises a device shell, wherein a servo motor is fixedly connected to the top end face of the device shell, the output end of the servo motor is connected with a connecting shaft, the connecting shaft is connected to the top end inside the device shell in a rotating mode, a rubber rotating wheel and a first circular gear are fixedly connected to the connecting shaft, a second circular gear is connected to the first circular gear in a meshed mode, the second circular gear is installed on a centrifugal assembly, filter cloth is arranged in the centrifugal assembly, a fixing net plate is fixedly connected to the inside of the device shell, a transfer assembly is installed at the bottom end of the device shell, a protection side plate is fixedly connected to the bottom end of the device shell, a fixing bottom plate is fixedly connected to the bottom end of the protection side plate, a reset spring is fixedly connected to the protection side plate, a clamping rod is fixedly connected to the other end of the reset spring, the reset spring is sleeved on the clamping rod, the clamping rod is connected to the protection side plate in a clamping groove in a penetrating and sliding mode, the clamping groove is formed in the side end of a collecting box, and a protection door plate is installed on the device shell.

As a preferable embodiment of the production apparatus for producing high-purity durene by a centrifugal method according to the present invention, wherein: the connecting shafts are symmetrically distributed on two sides inside the device shell, the rubber rotating wheels are symmetrically distributed on two sides of the connecting shafts, and the rubber rotating wheels are oval.

As a preferable embodiment of the production apparatus for producing high-purity durene by a centrifugal method according to the present invention, wherein: the centrifugal component comprises a first limiting frame, the first limiting frame is connected to the top end inside the device shell in a rotating mode through a sealing bearing, a first fixing frame fixedly connected with inside the first limiting frame, a fixed connection is formed between a second circular gear and the first limiting frame and between the second circular gear and the second limiting frame, a supporting rod fixedly connected with inside the second limiting frame, a second fixing frame fixedly connected with the other end of the supporting rod, rubber airbags fixedly connected with on the first fixing frame and the second fixing frame, a fixing pipe is connected to the rubber airbags, a fixed connection is formed between the fixing pipe and the first fixing frame and between the fixing frame and the second fixing frame, the top end of the first limiting frame is connected with a connecting plate in a rotating mode through the sealing bearing, and a feeding pipe is fixedly connected to the connecting plate.

As a preferable embodiment of the production apparatus for producing high-purity durene by a centrifugal method according to the present invention, wherein: the central axis of the first limit frame, the central axis of the second limit frame and the central axis of the device shell are located on the same vertical central line, the diameter of the first limit frame is equal to that of the second limit frame, the rubber air bag is in a circular ring shape, the fixed pipes are distributed on the rubber air bag at equal angles, and the diameter of the connecting plate is smaller than that of the first limit frame.

As a preferable embodiment of the production apparatus for producing high-purity durene by a centrifugal method according to the present invention, wherein: fixedly connected with filter screen board in the fixed bolster, it is connected with first threaded rod to rotate on the filter screen board, threaded connection has the connecting sleeve pole on the first threaded rod, the tip fixedly connected with grip block of connecting sleeve pole, the grip block sets up in rubber air bag, the other end fixedly connected with rubber piston of connecting sleeve pole, rubber piston sliding connection is in the fixed bolster, it is connected with the axis of rotation to rotate on the fixed frame of second, the first conical gear of fixedly connected with and push pedal in the axis of rotation, the meshing is connected with second conical gear on the first conical gear, second conical gear fixed connection is on first threaded rod, the spacing frame of second passes through the bearing and rotates the connection on fixed screen board, fixed screen board is the large aperture otter board.

As a preferable embodiment of the production apparatus for producing high-purity durene by a centrifugal method according to the present invention, wherein: the utility model discloses a rubber piston's clamping plate, including filter screen plate, rubber piston, clamping plate, rubber piston, fixed pipe, the terminal surface parallel and level of filter screen plate's side end face and fixed pipe, the middle part at rubber piston is connected to the one end of connecting the loop bar, the middle part at the clamping plate is connected to the other end of connecting the loop bar, the clamping plate is circular-arcly, rubber piston laminates with the inner wall of fixed pipe mutually, the rectangle is personally submitted to the transversal of fixed pipe.

As a preferable embodiment of the production apparatus for producing high-purity durene by a centrifugal method according to the present invention, wherein: the transfer assembly comprises a transfer frame, the transfer frame is fixedly connected to the bottom end face of the device shell, the bottom end of the transfer frame is connected with a guide pipe, the transfer frame is fixed to the middle of the bottom end of the device shell, the bottom end of the device shell is arc-shaped, the guide pipes are symmetrically distributed on two sides of the bottom end of the transfer frame, and the guide pipes are inclined.

As a preferable embodiment of the production apparatus for producing high-purity durene by a centrifugal method according to the present invention, wherein: the improved roller mill is characterized in that a second threaded rod is connected to the middle rotating frame in a rotating mode, a connecting plate is connected to the second threaded rod in a threaded mode, the connecting plate is connected to the middle rotating frame in a sliding mode and is connected to the middle of the middle rotating frame, a sealing pad is fixedly connected to the bottom end of the connecting plate, the second threaded rod is connected to the middle of the connecting plate, the side end face of the connecting plate is attached to the inner wall of the middle rotating frame, and the bottom end face of the sealing pad, the inner bottom end face of the middle rotating frame and the top end face of the guide pipe are located on the same horizontal plane.

As a preferable embodiment of the production apparatus for producing high-purity durene by a centrifugal method according to the present invention, wherein: the protective side plates are symmetrically distributed on two sides of the fixed base plate, the protective side plates correspond to the collecting boxes one by one through the clamping rods, and the height of the top end face of each collecting box is smaller than that of the bottom end face of the guide pipe.

A method for producing high-purity durene by using a centrifugal method comprises the following steps:

s1: the filter cloth is sleeved outside the centrifugal assembly in a surrounding mode by a worker, two ends of the filter cloth are clamped in a sealing mode through the centrifugal assembly, then the worker can convey the durene enrichment liquid which is frozen and crystallized into the filter cloth through the feeding pipe, and the durene crystals and the mother liquid are mixed to form turbid liquid;

s2: the driving of a servo motor is utilized, a first round gear on a connecting shaft can drive a centrifugal assembly on a second round gear to stably rotate, then the turbid liquid in the filter cloth is centrifugally filtered, a certain proportion of pyromellitic filtrate is filtered, a mixture of durene and mother liquor is obtained, and a slurry state is formed;

s3: the filtered pyromellitic dianhydride is guided and conveyed to the collecting box at one side by the transfer component, and then the transfer component can be driven again to guide and convey the mixture of durene and mother liquor left in the centrifugal component and the filter cloth to the collecting box at the other side for classified collection;

s4: the mixture of durene and mother liquor is conveyed by a pipeline pump, and the durene with the purity of more than 98 percent is prepared by squeezing by a squeezer.

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

1. be provided with rubber air bag and grip block, through enclosing the filter cloth outside the push pedal, and fill in respectively to first spacing frame and second spacing frame with the both ends of filter cloth, the staff utilizes the meshing drive of first conical gear and second conical gear afterwards, can drive each first threaded rod steady rotation, can drive the grip block outwards move simultaneously through connecting the loop bar at first threaded rod this moment, and then can fix the convenient stable centre gripping in first spacing frame and second spacing frame in the both ends of filter cloth, meanwhile, the connecting loop bar utilizes rubber piston can carry out automatic charging to rubber air bag, and then can carry out automatic stable sealing work to the both ends junction of filter cloth, thereby can guarantee the stability of the follow-up filtration work of filter cloth, utilize the counter rotation of first conical gear and second conical gear to carry out convenient stable dismantlement change to the filter cloth simultaneously, guarantee the stability of the long-time operating condition of device.

2. Be provided with rubber and rotate wheel and push pedal, the rotation that utilizes first circular gear can drive first spacing frame and the spacing frame of second on the second circular gear and rotate simultaneously, the push pedal that can drive the axis of rotation both sides simultaneously rotates, and then can drive the turbid liquid in the filter cloth and carry out centrifugal filtration work, meanwhile, connecting axle on the first circular gear can drive rubber and rotate the wheel and stabilize the rotation, and then can carry out intermittent type push work to the filter cloth, the rotating state's filter cloth can carry out the intermittent type shake this moment, and carry out defoaming work, can effectively avoid the centrifugal filtration in-process, the inside bubble that appears of filter cloth, influence follow-up filtration efficiency, the stability in use of device has been increased, the work efficiency of device has effectively been improved simultaneously.

3. Be provided with the transfer subassembly, can promote the connection board through the rotation of second threaded rod left or backward movement, and then can carry out closure respectively and open work to the stand pipe of both sides, through the stand pipe of regulation and control both sides, can carry out convenient stable categorised collection work to remaining durene and the mixture of mother liquor in the equal four filtrating of filtering and the filter cloth, increased the use variety and the high efficiency of device.

4. Be provided with kelly and collecting box, utilize the cooperation of kelly and draw-in groove, can carry out the fixed and dismantlement work in convenient stable location to the collecting box, and then can guarantee the stability of the follow-up collection work of collecting box, can guarantee the convenience of the follow-up transportation work of taking of collecting box simultaneously, increased the use convenience and the stability of device.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the present invention will be described in detail below with reference to the accompanying drawings and detailed embodiments, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without inventive efforts. Wherein:

FIG. 1 is a schematic view showing the overall three-dimensional structure of a production apparatus for producing high-purity durene by a centrifugal method according to the present invention;

FIG. 2 is a schematic diagram showing a three-dimensional structure of a filter cloth of a production apparatus for producing high-purity durene by a centrifugal method according to the present invention;

FIG. 3 is a schematic view of the overall front view of a production apparatus for producing high-purity durene by centrifugation according to the present invention;

FIG. 4 is a schematic view of a second fixing frame of a production apparatus for high-purity durene by centrifugation according to the present invention;

FIG. 5 is a schematic diagram showing a schematic top view of a rubber bladder of a production apparatus for high-purity durene by centrifugation according to the present invention;

FIG. 6 is a schematic diagram showing a side view of a rubber piston of a production apparatus for high-purity durene by centrifugation according to the present invention;

FIG. 7 is a schematic view showing the bottom structure of a supporting rod of a device for producing high-purity durene by centrifugation according to the present invention;

FIG. 8 is a schematic top view showing the structure of a rubber rotary wheel of a production apparatus for high-purity durene by centrifugation according to the present invention;

FIG. 9 is a schematic diagram showing a front view of a filter cloth of a production apparatus for producing high-purity durene by centrifugation according to the present invention;

FIG. 10 is a schematic view showing the structure of a rotating frame in a production apparatus for high-purity durene by centrifugation according to the present invention;

FIG. 11 is a schematic top view showing the construction of a connector tile of a production apparatus for high-purity durene by centrifugation according to the present invention;

FIG. 12 is a schematic view showing the structure of a clamping rod of a production apparatus for producing high-purity durene by a centrifugal method according to the present invention;

FIG. 13 is a schematic view showing the top view of the collecting box of the apparatus for producing high-purity durene by centrifugation according to the present invention.

Reference numbers in the figures: 1. a device housing; 2. a servo motor; 3. a connecting shaft; 4. a rubber rotary wheel; 5. a first circular gear; 6. a second circular gear; 7. a centrifuge assembly; 701. a first limit frame; 702. a first fixed frame; 703. a rubber air bag; 704. a fixed tube; 705. a filter screen plate; 706. a first threaded rod; 707. connecting the loop bar; 708. a clamping plate; 709. a rubber piston; 710. a second limit frame; 711. a support bar; 712. a second fixed frame; 713. a rotating shaft; 714. a first bevel gear; 715. a second bevel gear; 716. pushing the plate; 8. a connecting plate; 9. a feed pipe; 10. fixing the screen plate; 11. a transfer component; 1101. a transfer frame; 1102. a guide tube; 1103. a second threaded rod; 1104. a connector tile; 1105. a gasket; 12. a partition plate; 13. a protective side plate; 14. fixing the bottom plate; 15. a return spring; 16. a clamping rod; 17. a card slot; 18. a collection box; 19. filtering cloth; 20. a protective door plate.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced otherwise than as specifically described herein, and it will be appreciated by those skilled in the art that the present invention may be practiced without departing from the spirit and scope of the present invention and that the present invention is not limited by the specific details disclosed below.

Next, the present invention will be described in detail with reference to the drawings, wherein for convenience of illustration, the cross-sectional view of the device structure is not enlarged partially according to the general scale, and the drawings are only examples, which should not limit the scope of the present invention. In addition, the three-dimensional dimensions of length, width and depth should be included in the actual fabrication.

Examples

In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

As shown in fig. 1-13, a device for producing high-purity durene by using a centrifugal method, comprises a device shell 1, a servo motor 2 is fixedly connected to the top end face of the device shell 1, the output end of the servo motor 2 is connected with a connecting shaft 3, the connecting shaft 3 is rotatably connected to the top end inside the device shell 1, a rubber rotating wheel 4 and a first circular gear 5 are fixedly connected to the connecting shaft 3, a second circular gear 6 is engaged and connected to the first circular gear 5, the second circular gear 6 is mounted on a centrifugal assembly 7, a filter cloth 19 is arranged in the centrifugal assembly 7, a fixed screen plate 10 is fixedly connected to the inside of the device shell 1, a transfer assembly 11 is mounted at the bottom end of the device shell 1, a protective side plate 13 is fixedly connected to the bottom end of the device shell 1, a fixed bottom plate 14 is fixedly connected to the bottom end of the protective side plate 13, a reset spring 15 is fixedly connected to the protective side plate 13, the other end of the reset spring 15 is fixedly connected with a clamping rod 16, the reset spring 15 is sleeved on the clamping rod 16, the clamping rod 16 is connected on the protective side plate 13 in a penetrating and sliding manner, the clamping rod 16 is connected in a clamping groove 17 in a clamping manner, the clamping groove 17 is arranged at the side end of the collecting box 18, a protective door plate 20 is arranged on the device shell 1, the centrifugal component 7 can be used for automatically and stably sealing the joint of the two ends of the filter cloth 19, so that the stability of the subsequent filtering work of the filter cloth 19 can be ensured, meanwhile, the filter cloth 19 can be conveniently and stably disassembled and replaced by utilizing the reverse rotation of the first conical gear 714 and the second conical gear 715, the long-time working state of the device is ensured to be stable, and the connecting shaft 3 can be driven by the meshing drive of the first circular gear 5 and the second circular gear 6 and further can drive turbid liquid in the filter cloth 19 to perform stable centrifugal filtering work by the centrifugal component 7, meanwhile, connecting axle 3 on the first circular gear 5 can drive rubber and rotate 4 stable rotations of wheel, and then can carry out intermittent type pushing work to filter cloth 19, the filter cloth 19 of rotating condition this moment can carry out intermittent type shake, and the defoaming work, and cooperation transfer subassembly 11 can carry out convenient stable categorised collection work to the mixture of the interior remaining durene of the equal four filtrates of filtering and filter cloth 19 and mother liquor, and utilize the cooperation of kelly 16 and draw-in groove 17, can carry out convenient stable location fixed and dismantlement work to collecting box 18, and then can guarantee the stability of the follow-up collection work of collecting box 18, can guarantee the convenience of the follow-up transportation work of taking of collecting box 18 simultaneously, the use convenience and the stability of device have been increased.

In this example, connecting axle 3 symmetric distribution is in the inside both sides of device shell 1, and rubber rotates wheel 4 symmetric distribution in connecting axle 3 both sides, and rubber rotates wheel 4 and is the ellipse form, utilizes the rotation that each rubber rotated wheel 4 can carry out intermittent vibration to the filter cloth 19 of rotating condition to carry out defoaming work, avoid influencing follow-up centrifugal filtration work.

In this example, the centrifugal assembly 7 includes a first limit frame 701, the first limit frame 701 is rotatably connected to the top end inside the device housing 1 through a sealing bearing, a first fixed frame 702 is fixedly connected to the inside of the first limit frame 701, both fixed connections between the second circular gear 6 and the first limit frame 701 and between the second limit frame 710 are fixed, a support rod 711 is fixedly connected to the inside of the second limit frame 710, the other end of the support rod 711 is fixedly connected to a second fixed frame 712, rubber airbags 703 are fixedly connected to the first fixed frame 702 and the second fixed frame 712, a fixed pipe 704 is connected to the rubber airbags 703, both fixed pipes 704 are fixedly connected to the first fixed frame 702 and the second fixed frame 712, the top end of the first limit frame 701 is rotatably connected to a connection plate 8 through a sealing bearing, a feed pipe 9 is fixedly connected to the connection plate 8, and the connection plate 8 connected by a bearing can ensure that the feed pipe 9 is not affected by the rotation of the first limit frame 701, and ensure the stability of the subsequent feeding work.

In this example, the central axis of the first limiting frame 701, the central axis of the second limiting frame 710 and the central axis of the device housing 1 are located on the same vertical central line, the diameter of the first fixing frame 702 is equal to the diameter of the second fixing frame 712, the rubber airbag 703 is in a circular ring shape, the fixing tubes 704 are distributed on the rubber airbag 703 at equal angles, the diameter of the connecting plate 8 is smaller than the diameter of the first fixing frame 702, the subsequent inflation amount of the rubber airbag 703 can be ensured by using each fixing tube 704, and then the stability of the subsequent sealing work can be ensured, thereby ensuring the stability of the subsequent centrifugal filtering work.

In this example, a filter screen plate 705 is fixedly connected in a fixed pipe 704, a first threaded rod 706 is connected to the filter screen plate 705 in a rotating manner, a connecting sleeve rod 707 is connected to the first threaded rod 706 in a threaded manner, a clamping plate 708 is fixedly connected to an end portion of the connecting sleeve rod 707, the clamping plate 708 is arranged in a rubber air bag 703, a rubber piston 709 is fixedly connected to the other end of the connecting sleeve rod 707, the rubber piston 709 is slidably connected in the fixed pipe 704, a rotating shaft 713 is connected to a second fixed frame 712 in a rotating manner, a first conical gear 714 and a push plate 716 are fixedly connected to the rotating shaft 713 in a rotating manner, a second conical gear 715 is connected to the first conical gear 714 in a meshing manner, the second conical gear 715 is fixedly connected to the first threaded rod 706 in a rotating manner through a bearing, the second limit frame 710 is connected to the fixed screen plate 10 in a rotating manner, the fixed screen plate 10 is a large-diameter screen plate 10, the first conical gear 714 and the second conical gear 715 are driven in a meshing manner, each first conical gear 715 can drive the clamping plate to stably rotate, at the same time, the first threaded rod 706 and the second conical gear 714 can be connected to a filter cloth 19, and filter cloth 19 automatically, and filter cloth can be connected to the filter cloth 19.

In this example, the side end surface of the screen plate 705 is flush with the end surface of the fixed pipe 704, one end of the connecting sleeve rod 707 is connected to the middle of the rubber piston 709, the other end of the connecting sleeve rod 707 is connected to the middle of the clamping plate 708, the clamping plate 708 is arc-shaped, the rubber piston 709 is attached to the inner wall of the fixed pipe 704, the cross section of the fixed pipe 704 is rectangular, the connecting sleeve rod 707 can be stably limited by the rectangular fixed pipe 704 and the rectangular rubber piston 709, and then the stability of the subsequent screw motion work of the connecting sleeve rod 707 can be ensured, so that the stability of the subsequent clamping and sealing work can be ensured.

In this example, transfer subassembly 11 includes transfer frame 1101, transfer frame 1101 fixed connection is on the bottom face of device shell 1, the bottom of transfer frame 1101 is connected with stand pipe 1102, transfer frame 1101 is fixed at the bottom middle part of device shell 1, the bottom of device shell 1 is personally submitted circular-arcly, stand pipe 1102 symmetric distribution is in transfer frame 1101 bottom both sides, stand pipe 1102 is the slope form, the stand pipe 1102 that utilizes the slope form can carry out convenient stable categorised collection to the mixture of the equal four filtrates of filtering and remaining durene and mother liquor, and then can guarantee the stability and the convenience of the follow-up transportation processing work of the mixture of the equal four filtrates and durene and mother liquor.

In this example, a second threaded rod 1103 is rotationally connected to the transfer frame 1101, a connecting plate 1104 is connected to the second threaded rod 1103 in a threaded manner, the connecting plate 1104 is slidably connected to the transfer frame 1101, a sealing gasket 1105 is fixedly connected to the bottom end of the connecting plate 1104, the second threaded rod 1103 is connected to the middle portion of the connecting plate 1104, the side end face of the connecting plate 1104 is attached to the inner wall of the transfer frame 1101, the bottom end face of the sealing gasket 1105, the inner bottom end face of the transfer frame 1101 and the top end face of the guide pipe 1102 are located on the same horizontal plane, the connecting plate 1104 can be pushed to move leftwards or backwards through rotation of the second threaded rod 1103, the guide pipes 1102 on the two sides can be respectively closed and opened, and by adjusting and controlling the guide pipes 1102 on the two sides, the mixture of filtered pyromellitic benzene and mother liquor remaining in the filter cloth 19 can be conveniently and stably classified and collected, and the use diversity and high efficiency of the device are increased.

In this example, protection curb plate 13 symmetric distribution is in the both sides of PMKD 14, protection curb plate 13 passes through

kelly

16 and 18 one-to-one of collecting box, the height that highly is less than stand pipe 1102 bottom face of collecting box 18 top terminal surface, utilize kelly 16 and draw-in groove 17's cooperation, can carry out convenient stable location fixed and dismantlement work to collecting box 18, and then can guarantee the stability of the follow-up collection work of collecting box 18, can guarantee the convenience of the follow-up transportation work of taking of collecting box 18 simultaneously, the convenience of use and the stability of device have been increased.

It should be noted that the present invention is a production apparatus and method for producing high-purity durene by centrifugation, first, when the device is started, the worker can open the protective door plate 20 on the device shell 1, and the filter cloth 19 to be used is wrapped between the first limit frame 701 and the second limit frame 710, and then the worker can wrap the filter cloth 19 outside the rotating shaft 713, meanwhile, two ends of the filter cloth 19 can be overlapped to ensure the stability of the subsequent sealing effect, and then the worker can plug the upper end of the filter cloth 19 into the first limiting frame 701, and is placed between the first limit frame 701 and the rubber air bag 703, at this time, the lower end of the filter cloth 19 can naturally fall between the second limit frame 710 and the rubber air bag 703, then the worker only needs one hand to lift the filter cloth 19, then the other hand rotates the rotating shaft 713 on the second fixing frame 712, at this time, the first bevel gears 714 on the upper and lower sides can be driven to rotate under the rotating action of the rotating shaft 713, under the action of the rotation of the first bevel gear 714, each second bevel gear 715 engaged with the first bevel gear can drive the corresponding first threaded rod 706 to stably rotate on the filter screen plate 705, under the action of the rotation of first threaded rod 706, connecting rods 707 connected by screw threads can drive each clamping plate 708 to move outwards at the same time, so that the two ends of the filter cloth 19 can be clamped and fixed in the first limiting frame 701 and the second limiting frame 710 respectively, and at the same time, the rubber piston 709 can be driven to move in the fixed pipe 704 under the action of the movement of the connecting sleeve rod 707, the rubber air bag 703 can be automatically inflated, and at the moment, under the action of the rubber air bag 703, two ends of the filter cloth 19 can be automatically and stably connected with the inside of the first limiting frame 701 and the second limiting frame 710 in a sealing manner;

then, a worker can close the protective door plate 20, the frozen and crystallized durene enrichment liquid is stably conveyed into the filter cloth 19 through the feeding pipe 9 on the connecting plate 8, durene crystals and mother liquor are mixed together to form turbid liquid, the first circular gear 5 on the connecting shaft 3 on one side can be driven to rotate under the driving action of the servo motor 2, and then the second circular gear 6 connected in a meshed mode can be driven to rotate, at the moment, under the rotating action of the second circular gear 6, the connecting shaft 3 on the other side can be driven to rotate simultaneously through the first circular gear 5 connected in a meshed mode on the other side, under the rotating action of the second circular gear 6, the first limiting frame 701 and the second limiting frame 710 can be driven to rotate simultaneously, the filter cloth 19 fixed in a sealed mode can be driven to rotate simultaneously, meanwhile, the second fixing frame 712 can drive the rotating shaft 713 to rotate, at the moment, the rotating shaft 713 can shift the turbid liquid to rotate centrifugally, the filter cloth 713 can be matched with the filter cloth 19 to perform stable centrifugal filtration work, at the moment, the filter cloth 19 can be prevented from rotating in an intermittent bubble state under the rotating pushing action of the rotating rubber 4, and the filter cloth 19 can be prevented from operating intermittently;

in the centrifugal filtration process, filtered four uniform filtrates can move into the transfer frame 1101 through the fixed screen plate 10 at the bottom end inside the device shell 1, only one side of the guide pipes 1102 at the two sides of the bottom end of the transfer frame 1101 is opened under the shielding effect of the connecting plate 1104 and the sealing gasket 1105, the other side of the transfer frame 1101 is closed, the filtered four uniform filtrates can be stably guided and conveyed into the collection box 18 at one side by using the guide pipes 1102 at one side, after the centrifugal filtration work is finished, a worker can drive the connecting plate 1104 and the sealing gasket 1105 to move towards the other side by rotating the second threaded rod 1103 on the transfer frame 1101, the guide pipe 1102 at one side is opened, the guide pipe 1102 at the other side is closed, the worker can open the protective door plate 20 again, the worker can carry out the top end of the filter cloth 19 again by lifting the top end of the filter cloth 19, the worker can reversely rotate the rotating shaft 713 on the second fixed frame 712, the worker can drive the clamping plates 708 reversely under the reverse rotation effect of the rotating shaft 713, the clamping plates 708 can be driven to move and reset, the rubber air bag 703 can be recovered in situ, the filter cloth 19 and can be stably conveyed into the collection box 18, and the collection box 18 can be conveniently and collected;

and after collection work is accomplished at collecting box 18, staff's accessible outwards stimulates kelly 16 on the protection curb plate 13, until kelly 16 moves and breaks away from draw-in groove 17, collecting box 18 was accomplished and is dismantled this moment, and then can carry out subsequent rotation work of taking, and the same thing, collecting box 18 after will using is placed on PMKD 14, and utilize reset spring 15 can drive automatic block of kelly 16 to the draw-in groove 17 of collecting box 18 side in, cooperation division board 12 can carry out convenient stable block location to collecting box 18, and then can guarantee the stability of the follow-up operating condition of collecting box 18.

While the invention has been described above with reference to an embodiment, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention. In particular, the various features of the disclosed embodiments of the invention may be used in any combination, provided that no structural conflict exists, and the combinations are not exhaustively described in this specification merely for the sake of brevity and resource conservation. Therefore, it is intended that the invention not be limited to the particular embodiments disclosed, but that the invention will include all embodiments falling within the scope of the appended claims.

Claims

1. A production device for producing high-purity durene by a centrifugal method comprises a device shell (1) and is characterized in that; the device comprises a device shell (1), wherein a servo motor (2) is fixedly connected to the top end face of the device shell (1), the output end of the servo motor (2) is connected with a connecting shaft (3), the connecting shaft (3) is rotatably connected to the top end inside the device shell (1), a rubber rotating wheel (4) and a first circular gear (5) are fixedly connected to the connecting shaft (3), a second circular gear (6) is connected to the first circular gear (5) in a meshed manner, the second circular gear (6) is installed on a centrifugal assembly (7), filter cloth (19) is arranged in the centrifugal assembly (7), a fixed screen plate (10) is fixedly connected to the inside of the device shell (1), a transfer assembly (11) is installed at the bottom end of the device shell (1), a protective side plate (13) is fixedly connected to the bottom end of the device shell (1), a fixed bottom plate (14) is fixedly connected to the bottom end of the protective side plate (13), a reset spring (15) is fixedly connected to the protective side plate (13), a clamping rod (16) is fixedly connected to the other end of the reset spring (15), the clamping rod (16) is sleeved on the clamping rod (16) and is connected to the clamping rod (17), the clamping groove (17) is formed in the side end of the collecting box (18), and the protective door plate (20) is installed on the device shell (1).

2. The apparatus for producing high-purity durene by centrifugation according to claim 1, characterized in that: connecting axle (3) symmetric distribution is in the inside both sides of device shell (1), rubber rotates wheel (4) symmetric distribution in connecting axle (3) both sides, rubber rotates wheel (4) and is the ellipse.

3. The apparatus for producing high-purity durene according to claim 2, wherein: centrifugal component (7) include first spacing frame (701), first spacing frame (701) rotate through sealed bearing and connect on the inside top of device shell (1), first fixed frame (702) of fixedly connected with in first spacing frame (701), be fixed connection between second circular gear (6) and first spacing frame (701) and second spacing frame (710), fixedly connected with bracing piece (711) in second spacing frame (710), the fixed frame of other end fixedly connected with second (712) of bracing piece (711), equal fixedly connected with rubber air bag (703) on first fixed frame (702) and the fixed frame of second (712), be connected with fixed pipe (704) on rubber air bag (703), be fixed connection between fixed pipe (704) and the fixed frame of first fixed frame (702) and second (712), the top of first spacing frame (701) rotates through sealed bearing and is connected with connecting plate (8), fixedly connected with inlet pipe (9) on fixed connection board (8).

4. The apparatus for producing high-purity durene according to claim 3, wherein: the central axis of first spacing frame (701), the central axis of second spacing frame (710) and the central axis of device shell (1) are located same vertical central line, the diameter of the fixed frame of first (702) equals with the diameter of the fixed frame of second (712), rubber air bag (703) are the ring form, fixed pipe (704) wait angular distribution on rubber air bag (703), the diameter of connecting plate (8) is less than the diameter of the fixed frame of first (702).

5. The apparatus for producing high-purity durene according to claim 3, wherein: fixedly connected with filter screen board (705) in fixed pipe (704), it is connected with first threaded rod (706) to rotate on filter screen board (705), threaded connection has connecting loop bar (707) on first threaded rod (706), the tip fixedly connected with grip block (708) of connecting loop bar (707), grip block (708) set up in rubber air bag (703), the other end fixedly connected with rubber piston (709) of connecting loop bar (707), rubber piston (709) sliding connection is in fixed pipe (704), it is connected with axis of rotation (713) to rotate on the fixed frame of second (712), fixedly connected with first conical gear (714) and push pedal (716) on axis of rotation (713), the meshing is connected with second conical gear (715) on first conical gear (714), second conical gear (715) fixed connection is on first conical gear (706), second spacing frame (710) rotate through the bearing and connect on fixed screen board (10), fixed screen board (10) are large aperture threaded rod.

6. The apparatus for producing high-purity durene according to claim 5, wherein: the side end face of the filter screen plate (705) is flush with the end face of the fixed pipe (704), one end of the connecting sleeve rod (707) is connected to the middle part of the rubber piston (709), the other end of the connecting sleeve rod (707) is connected to the middle part of the clamping plate (708), the clamping plate (708) is arc-shaped, the rubber piston (709) is attached to the inner wall of the fixed pipe (704), and the cross section of the fixed pipe (704) is rectangular.

7. The apparatus for producing high-purity durene by centrifugation according to claim 1, characterized in that: transfer subassembly (11) are including transfer frame (1101), transfer frame (1101) fixed connection is on the bottom face of device shell (1), the bottom of transfer frame (1101) is connected with stand pipe (1102), the bottom middle part at device shell (1) is fixed to transfer frame (1101), the bottom of device shell (1) is personally submitted circular-arcly, stand pipe (1102) symmetric distribution is in transfer frame (1101) bottom both sides, stand pipe (1102) are the slope form.

8. The apparatus for producing high-purity durene according to claim 7, wherein: the improved connector comprises a middle rotating frame (1101), wherein a second threaded rod (1103) is rotationally connected in the middle rotating frame (1101), a connecting plate (1104) is connected to the second threaded rod (1103) in a threaded mode, the connecting plate (1104) is slidably connected in the middle rotating frame (1101), a sealing gasket (1105) is fixedly connected to the bottom end of the connecting plate (1104), the second threaded rod (1103) is connected to the middle of the connecting plate (1104), the side end face of the connecting plate (1104) is attached to the inner wall of the middle rotating frame (1101), and the bottom end face of the sealing gasket (1105), the inner bottom end face of the middle rotating frame (1101) and the top end face of a guide pipe (1102) are located on the same horizontal plane.

9. The apparatus for producing high-purity durene according to claim 8, characterized in that: the protection side plates (13) are symmetrically distributed on two sides of the fixed bottom plate (14), the protection side plates (13) correspond to the collection boxes (18) one by one through clamping rods (16), and the height of the top end face of each collection box (18) is smaller than that of the bottom end face of the guide pipe (1102).

10. A method for producing high-purity durene by centrifugation according to the production apparatus for high-purity durene by centrifugation as recited in claim 1, characterized by comprising the steps of:

s1: the filter cloth (19) is sleeved outside the centrifugal assembly (7) in a surrounding mode by a worker, two ends of the filter cloth (19) are clamped in a sealing mode through the centrifugal assembly (7), the worker can convey the durene enrichment liquid of the frozen crystals into the filter cloth (19) through the feeding pipe (9), and the durene crystals and the mother liquor are mixed to form turbid liquid;

s2: the driving of the servo motor (2) is utilized, the centrifugal assembly (7) on the second circular gear (6) can be driven to stably rotate through the first circular gear (5) on the connecting shaft (3), then the turbid liquid in the filter cloth (19) is subjected to centrifugal filtration, a certain proportion of pyromellitic filtrate is filtered, a mixture of durene and mother liquor is obtained, and a slurry state is formed;

s3: the filtered pyromellitic dianhydride is guided and conveyed into the collecting box (18) at one side by using the transfer component (11), and then the transfer component (11) can be driven again to guide and convey the mixture of the residual pyromellitic dianhydride and the mother liquor in the centrifugal component (7) and the filter cloth (19) into the collecting box (18) at the other side for classified collection;