CN116139810B - Esterification device for producing methyl methacrylate - Google Patents

Abstract

The invention discloses an esterification device for producing methyl methacrylate, which relates to the technical field of chemical production, and has the advantages of being capable of sampling liquid at a plurality of position points in an esterification kettle, and the technical scheme is as follows: including the cauldron body, the sampling tube is located the cauldron internal, and be equipped with on the cauldron body and be used for driving the driving piece that the sampling tube reciprocated in the cauldron body, the outer wall one side of the cauldron body is equipped with the communicating pipe of L shape, the intercommunication has the hose on the sampling tube, and the hose is kept away from the one end of sampling tube and is passed the cauldron body and communicate with communicating pipe, be equipped with the suction pump on communicating pipe, and the one end mouth of pipe of keeping away from the hose of communicating pipe is down, be equipped with on the cauldron body and be used for carrying out the stirring piece to the cauldron internal, the top of the cauldron body is equipped with the inlet pipe, the bottom of the cauldron body is equipped with the discharging pipe, is equipped with the stop valve on the discharging pipe.

Description

Esterification device for producing methyl methacrylate

Technical Field

The invention relates to the technical field of chemical production, in particular to an esterification device for producing methyl methacrylate.

Background

Methyl methacrylate, also known as methyl methacrylate, is an organic compound, as a colorless liquid. An esterification kettle for producing methyl methacrylate, namely equipment for carrying out esterification reaction when producing methyl methacrylate. When methyl methacrylate is processed by using an esterification kettle, materials are often required to be taken at any time in the reaction process to confirm the reaction condition.

At present, the Chinese patent with the application number of CN201821480389.4 on the market discloses an esterification kettle for methyl methacrylate production, which comprises an esterification kettle, supporting feet and a support; the esterification kettle is fixed on the support through supporting legs fixed on the lower surface of the esterification kettle; the top plate of the esterification kettle is provided with a feed inlet in a penetrating way, the outer end of the feed inlet is exposed out of the esterification kettle, the feed inlet is connected with a feed valve, and the feed valve is arranged on the upper side of the esterification kettle; the lower end of the feed inlet penetrates through the top plate of the esterification kettle and is communicated and connected with the inclined tube, and the outlet end of the inclined tube is arranged at one side far away from the feed inlet; an esterifying agent inlet is arranged on the top plate of the esterifying kettle in a penetrating way, the outer end of the esterifying agent inlet is exposed out of the esterifying kettle, and an upper cover is sleeved on the outer wall of the outer end of the esterifying agent inlet; the inner end of the esterifying agent adding port is arranged in the esterifying kettle; a heating pipe is fixed on the inner wall of the esterification kettle; the lower part of the side wall of the esterification kettle is provided with a sampling mechanism, the sampling mechanism comprises a handle, a limiting block, a sampling valve body, a lug and a sampling port, the sampling valve body is fixed on the side wall of the esterification kettle, the limiting block is movably arranged in the sampling valve body, and the lug is fixedly connected with the inner side of the limiting block; the inner wall of the limiting block is in abutting arrangement with the limiting edge on the side wall of the esterification kettle; the bump peripheral wall is in contact with the through hole on the side wall of the esterification kettle; the outer side wall of the limiting block is connected with a handle, and the outer end of the handle penetrates through the sampling valve body and is arranged at the outer side of the sampling valve body; the lower side wall of the sampling valve body is provided with a sampling port in a penetrating way, the sampling port is connected with a control valve, and the control valve is arranged on the lower side of the sampling valve body; the middle part of the bottom wall of the esterification kettle is communicated with a discharge pipe, a discharge valve is connected to the discharge pipe, and the discharge valve is arranged on the outer side of the esterification kettle; the outer end of the discharging pipe passes through the esterification kettle and then is connected with a connector in a screwed way, and the lower end of the connector is connected with a water outlet pipe.

During sampling, the control valve is opened, the handle is pushed backwards with force, the limiting block is driven to move to the right side wall of the limiting block, when the right side wall of the limiting block is in conflict with the inner wall of the control valve, liquid in the esterification kettle flows into the control valve and then flows out through the sampling port, and sampling is carried out.

The defects of the prior art are that the liquid at the fixed point position in the esterification kettle can be sampled only, the liquid at a plurality of position points in the esterification kettle can not be sampled, the sampling is not uniform easily, and the reaction conditions at different positions in the whole esterification kettle can not be accurately known, so that the applicant develops a new technical scheme in the actual production process so as to solve the problem of how to sample the liquid at a plurality of position points in the esterification kettle.

Disclosure of Invention

In view of the above-mentioned technical shortcomings, an object of the present invention is to provide an esterification apparatus for producing methyl methacrylate, which has the advantage of being capable of sampling liquids at a plurality of locations in an esterification reactor.

In order to solve the technical problems, the invention adopts the following technical scheme:

the invention provides an esterification device for producing methyl methacrylate, which comprises a kettle body and a sampling tube, wherein the sampling tube is positioned in the kettle body, a driving part for driving the sampling tube to move up and down in the kettle body is arranged on the kettle body, one side of the outer wall of the kettle body is provided with an L-shaped communicating tube, a hose is communicated with the sampling tube, one end of the hose, which is far away from the sampling tube, penetrates through the kettle body and is communicated with the communicating tube, a water suction pump is arranged on the communicating tube, one end of the communicating tube, which is far away from the hose, is downwards arranged at a tube orifice, a stirring part for stirring the kettle body is arranged on the kettle body, a feeding tube is arranged at the top end of the kettle body, a discharging tube is arranged at the bottom end of the kettle body, and a stop valve is arranged on the discharging tube.

Through adopting above-mentioned technical scheme, the initial position of sampling tube is located the internal liquid top of cauldron, and during the sample, drive the sampling tube through the driving piece and move down in the cauldron, the sampling tube gets into in the liquid, then drives the piece and continue to drive the sampling tube and move down in the cauldron, at the in-process of removing, open the suction pump can take out the liquid of a plurality of position points in the cauldron through sampling tube, hose, communicating pipe, the complete sample, the sample is even, and is simple to use convenient.

Preferably, the stirring piece is including rotating the pivot of connecting at the internal top of cauldron, the bottom of pivot is equipped with crisscross support, four change grooves have been seted up to the bottom of support, and four change grooves all along the circumference evenly distributed of pivot, four change grooves are pairwise relative this moment, four all rotate in the change groove and be connected with the column, and the bottom of four columns is all vertical to be equipped with the stirring board downwards, be equipped with on the cauldron body and be used for driving the pivot and rotate and drive four columns at the pivoted driving piece in the change groove simultaneously.

Preferably, the driving piece is including setting up at cauldron body top be used for driving pivot pivoted first motor and rotating the cam of connection in the pivot, the cam is located the top of support, and the top and the cauldron body fixed connection of cam, coaxial rotation is connected with the swivel on the cam, be equipped with four connecting rods on the outer wall of swivel, and four connecting rods all along the circumference evenly distributed of swivel, four the top of swivel all is equipped with the dead lever, and the one end that the swivel was kept away from to four dead levers rotates with four connecting rods respectively and is connected.

Preferably, the driver comprises a fixed ring arranged at the middle part of one side of the inner wall of the kettle body, a cylinder is rotationally connected in the fixed ring, one end of the cylinder is coaxially provided with a disc positioned outside the fixed ring, the disc is positioned in the kettle body, the top end of the disc is provided with an arc plate, the sampling tube is arranged at one end of the arc plate far away from the disc, and the kettle body is provided with a rotating member for driving the cylinder to rotate.

Preferably, one end of the column body, which is away from the disc, passes through the kettle body and extends out of the kettle body, the rotating piece comprises a second motor arranged on one side of the outer wall of the kettle body, and one end of a rotating shaft of the second motor is fixedly connected with the column body;

or, the rotating piece is including setting up the external gear that is located the cauldron on the cylinder and setting up the fixed plate in cauldron external wall one side, the fixed plate is located the below of gear, and the top level of fixed plate slides and is connected with the movable plate, the top of movable plate is equipped with the rack with gear engaged with, be equipped with the cylinder that is used for promoting movable plate horizontal migration on the fixed plate.

Preferably, the driver includes slider, two backup pads, two travellers, two the equal level of backup pad is vertical in the inner wall one side of the cauldron body, and two backup pads are relative from top to bottom, the slider is located between two backup pads, and two relative recesses have been seted up on the top of slider, two the traveller is all vertical setting between two backup pads, and two at this moment the bottom of traveller is vertical to pass respectively from two recesses, the sampling tube sets up in one side of slider, two rotate between the backup pad and be connected with the drive axle, the top of the cauldron body is equipped with the third motor, and the axis of rotation one end of third motor passes the backup pad and the drive axle coaxial fixed connection of cauldron body and top, when driving the axle and rotating, be connected through drive assembly between drive axle and the slider, drive assembly is used for promoting slider vertical oscilaltion.

Preferably, the transmission assembly comprises a driving column arranged at one end of the sliding block close to the driving shaft and two annular grooves obliquely arranged on the driving shaft, one ends of the two annular grooves are intersected and communicated, and one end of the driving column close to the driving shaft is rotationally connected with an elliptical sliding block positioned in one of the annular grooves.

Preferably, the outer wall one side of the kettle body is provided with a placing plate, the placing plate is located below the communicating pipe, the top of the placing plate is provided with a placing area corresponding to the communicating pipe, a sampling bottle located in the placing area is placed on the placing plate, a baffle ring is connected to the communicating pipe in a vertical sliding mode, the baffle ring is located above the sampling bottle, the bottom of the baffle ring is in contact with the top bottle opening of the sampling bottle, and a plurality of ventilation holes are evenly formed in the top of the baffle ring.

Preferably, the bottom of keeping off the ring is coaxial to be equipped with annular embedded groove, the vertical embedded inslot of top bottleneck of sample bottle, coaxial being equipped with on the outer wall of communicating pipe is used for keeping off the collar of ring top, be equipped with compression spring between collar and the fender ring, one side of keeping off the ring is equipped with the push rod.

Preferably, the number of the embedded grooves is a plurality, and the diameters of the embedded grooves are different.

The invention has the beneficial effects that: the initial position of sampling tube is located the internal liquid top of cauldron, and during the sample, drive the sampling tube through the driver and move down in the cauldron, the sampling tube gets into in the liquid, then the driver continues to drive the sampling tube and move down in the cauldron, at the in-process that removes, opens the suction pump and can take out the liquid of a plurality of position points in the cauldron through sampling tube, hose, communicating pipe, and the complete sample is even, simple to use.

Drawings

In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural view of the present embodiment;

fig. 2 is a schematic structural view of an arcuate plate according to the present embodiment;

fig. 3 is a schematic structural view showing a bracket according to the present embodiment;

fig. 4 is a schematic structural view of the fixing plate according to the present embodiment;

fig. 5 is a schematic structural view of a communication pipe embodying the present embodiment;

fig. 6 is a schematic view of the structure of the present embodiment for embodying the annular groove;

fig. 7 is a schematic view of a structure for embodying a slider of the present embodiment;

fig. 8 is a schematic structural view showing the push rod of the present embodiment.

Reference numerals illustrate:

in the figure: 1. a kettle body; 2. a sampling tube; 3. a communicating pipe; 4. a hose; 5. a water pump; 6. a feed pipe; 7. a discharge pipe; 8. a stop valve; 9. a rotating shaft; 10. a bracket; 12. a rotary groove; 13. a rotating column; 14. a stirring plate; 15. a first motor; 16. a cam; 17. a swivel; 18. a connecting rod; 19. a fixed rod; 20. a fixing ring; 21. a column; 22. a disc; 23. an arc-shaped plate; 24. a second motor; 25. a gear; 26. a fixing plate; 27. a moving plate; 28. a rack; 29. a cylinder; 30. a support plate; 31. a spool; 32. a slide block; 33. a groove; 34. a driving shaft; 35. a third motor; 36. driving the column; 37. an annular groove; 38. a sliding block; 39. placing a plate; 40. a placement area; 41. sampling bottle; 42. a baffle ring; 43. ventilation holes; 44. an embedding groove; 45. a mounting ring; 46. a compression spring; 47. a push rod.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

The utility model provides a methyl methacrylate is with esterifying device, as in fig. 1 and 2, including the cauldron body 1, sampling tube 2 is located the cauldron body 1, and be equipped with the driving piece that is used for driving sampling tube 2 and reciprocate in the cauldron body 1 on the cauldron body 1, outer wall one side of the cauldron body 1 is equipped with the communicating pipe 3 of L shape, the intercommunication has hose 4 on the sampling tube 2, and hose 4 keep away from the one end of sampling tube 2 and pass the cauldron body 1 and communicate with communicating pipe 3, be equipped with suction pump 5 on communicating pipe 3, and the one end mouth of pipe that hose 4 was kept away from to communicating pipe 3 is down, be equipped with the stirring piece that is used for stirring in the cauldron body 1 on the cauldron body 1, the top of the cauldron body 1 is equipped with inlet pipe 6, the bottom of the cauldron body 1 is equipped with discharging pipe 7, be equipped with stop valve 8 on the discharging pipe 7.

If fig. 1 and fig. 2, the initial position of sampling tube 2 is located the liquid top in the cauldron body 1, can stir the liquid in the cauldron body 1 through the stirring piece and mix, during the sample, drive sampling tube 2 through the driver and move down in the cauldron body 1, sampling tube 2 gets into in the liquid, then the driver continues to drive sampling tube 2 and move down in the cauldron body 1, at the in-process of removal, open suction pump 5 can take out the liquid of a plurality of position points in the cauldron body 1 through sampling tube 2, hose 4, communicating pipe 3, the complete sample, the sample is even, it is simple to use.

As shown in fig. 2 and 3, the stirring piece is including rotating the pivot 9 of connecting at the internal top of cauldron, the bottom of pivot 9 is equipped with cross support 10, four change grooves 12 have been seted up to the bottom of support 10, and four change grooves 12 all follow the circumference evenly distributed of pivot 9, four change grooves 12 are pairwise opposite this moment, all rotate in four change grooves 12 and be connected with the column 13, and the bottom of four column 13 is all vertical to be equipped with stirring board 14 downwards, be equipped with on the cauldron body 1 and be used for driving pivot 9 rotation and drive four column 13 pivoted driving piece in the change groove 12 simultaneously.

As shown in fig. 2 and 3, the driving piece drives the rotating shaft 9 to rotate, at this moment, the rotating shaft 9 drives the four rotating columns 13 and the stirring plates 14 to rotate along the rotating axis of the rotating shaft 9 through the support 10, and when the support 10 drives the four rotating columns 13 and the stirring plates 14 to rotate along the rotating axis of the rotating shaft 9, the driving piece drives the four rotating columns 13 to rotate in the rotating groove 12 at the same time, so that one side of the four stirring plates 14 always faces the driving piece, at this moment, the liquid in the kettle body 1 can be stirred and mixed through the four stirring plates 14, the driving piece and the sampling tube 2 do not affect each other, and the use is simple and convenient.

As shown in fig. 2 and 3, the driving piece includes a first motor 15 disposed at the top end of the kettle body 1 and used for driving the rotating shaft 9 to rotate, and a cam 16 rotationally connected to the rotating shaft 9, wherein the cam 16 is located above the bracket 10, the top end of the cam 16 is fixedly connected with the kettle body 1, a rotating ring 17 is coaxially rotationally connected to the cam 16, four connecting rods 18 are disposed on the outer wall of the rotating ring 17, the four connecting rods 18 are uniformly distributed along the circumferential direction of the rotating ring 17, fixing rods 19 are disposed at the top ends of the four rotating columns 13, and one ends of the four fixing rods 19 far away from the rotating columns 13 are rotationally connected with the four connecting rods 18 respectively.

As shown in fig. 2 and 3, by opening the first motor 15, the rotating shaft of the first motor 15 drives the rotating shaft 9 to rotate, at this time, the cam 16 is rotationally connected with the rotating shaft 9, and the cam 16 is fixedly connected with the kettle body 1, so that the cam 16 cannot rotate along with the rotating shaft 9, and the fixing rods 19 on the four rotating columns 13 are rotationally connected with the four connecting rods 18 respectively, the connecting rods 18 are arranged on the rotating ring 17, and the rotating ring 17 is rotationally connected with the cam 16, so that when the bracket 10, the four stirring plates 14 and the rotating columns 13 rotate along with the rotating shaft 9, the four rotating columns 13 can be respectively driven to rotate in the rotating grooves 12 through the cooperation of the cam 16, the rotating ring 17, the four connecting rods 18 and the four fixing rods 19, so that one sides of the four stirring plates 14 always face the driving parts, and the use is simple and convenient.

As shown in fig. 2, the driving element comprises a fixing ring 20 arranged in the middle of one side of the inner wall of the kettle body 1, a column 21 is rotationally connected to the fixing ring 20, one end of the column 21 is coaxially provided with a disc 22 positioned outside the fixing ring 20, the disc 22 is positioned in the kettle body 1, the top end of the disc 22 is provided with an arc plate 23, the sampling tube 2 is arranged at one end of the arc plate 23 far away from the disc 22, and the kettle body 1 is provided with a rotating element for driving the column 21 to rotate.

As shown in FIG. 2, the disc 22 is located in the liquid, when the sampling tube 2 needs to be driven to move up and down, the column 21 is driven to rotate only by the rotating piece, at this moment, the column 21 drives the disc 22, the arc plate 23 and the sampling tube 2 vertically on the arc plate 23 to rotate along the rotation axis of the column 21, when the column 21 rotates downwards by 90 degrees, the sampling tube 2 on the arc plate 23 can enter the liquid, then the column 21 continues to rotate, at this moment, the position of the sampling tube 2 in the liquid in the kettle body 1 can be changed, the liquid at a plurality of position points in the kettle body 1 can be conveniently sampled, after 360 degrees of rotation, the sampling tube 2 rotates out of the liquid and is located at an initial position, so that the next sampling is facilitated, and when the next sampling is carried out, the column 21 starts to rotate reversely by 360 degrees, and the use is simple and convenient.

As shown in fig. 2, one end of the column 21, which is away from the disc 22, passes through the kettle body 1 and extends to the outside of the kettle body 1, the rotating member comprises a second motor 24 arranged on one side of the outer wall of the kettle body 1, one end of a rotating shaft of the second motor 24 is fixedly connected with the column 21, and the column 21 can be driven to rotate by opening the second motor 24, so that the rotating shaft of the second motor 24 can drive the column 21 to rotate, and the second motor 24 is a servo motor.

As shown in fig. 4, alternatively, the rotating member comprises a gear 25 arranged on the column 21 and located outside the kettle body 1, and a fixed plate 26 arranged on one side of the outer wall of the kettle body 1, the fixed plate 26 is located below the gear 25, the top end of the fixed plate 26 is horizontally slidably connected with a moving plate 27, the top end of the moving plate 27 is provided with a rack 28 meshed with the gear 25, the fixed plate 26 is provided with a cylinder 29 for pushing the moving plate 27 to horizontally move, the cylinder 29 is opened, the piston rod of the cylinder 29 pushes the moving plate 27 to drive the rack 28 to horizontally move, and at the moment, the column 21 can be driven to rotate through the gear 25 meshed with the rack 28, so that the rotating member is simple and convenient to use.

As shown in fig. 5, fig. 6 and fig. 7, or, the driver includes a slider 32, two support plates 30, two slide columns 31, two support plates 30 are all horizontal and vertical in the inner wall side of the kettle body 1, and two support plates 30 are opposite from top to bottom, the slider 32 is located between two support plates 30, and two opposite grooves 33 are provided at the top of the slider 32, two slide columns 31 are all vertical between two support plates 30, at this moment, the bottom of two slide columns 31 vertically passes from two grooves 33 respectively, the sampling tube 2 is disposed at one side of the slider 32, a driving shaft 34 is rotatably connected between two support plates 30, the top of the kettle body 1 is provided with a third motor 35, and one end of a rotation shaft of the third motor 35 passes through the kettle body 1 and the support plate 30 above and is fixedly connected with the driving shaft 34 coaxially, when the driving shaft 34 rotates, the driving shaft 34 is connected with the slider 32 through a transmission assembly, the transmission assembly is used for pushing the slider 32 to vertically move up and down, the transmission assembly includes a driving column 36 disposed at one end of the slider 32 near the driving shaft 34 and two 37 inclined disposed at one end of the driving shaft 34, two ends 37 are rotatably connected with one end of the driving shaft 37 near the annular groove 37, and one end of the driving shaft 37 is connected with one end of the annular groove 37.

As shown in fig. 5, fig. 6 and fig. 7, by opening the third motor 35, at this time, the rotation shaft of the third motor 35 drives the driving shaft 34 to rotate, at this time, because the bottom ends of the two sliding columns 31 vertically pass through the two grooves 33 on the sliding block 32 respectively, when the driving shaft 34 rotates, the driving column 36 can be pushed to drive the sliding block 32 and the sampling tube 2 to vertically move up and down through the cooperation of the two inclined and communicated annular grooves 37 on the driving shaft 34 and the sliding block 38, when the sliding block 32 vertically moves down, the sliding block 32 and the sampling tube 2 can enter the liquid in the kettle body 1, then the sliding block 32 continuously moves vertically down, at this time, the position of the sampling tube 2 in the liquid in the kettle body 1 can be changed, so that the liquid at a plurality of position points in the kettle body 1 can be conveniently sampled, and the use is simple and convenient.

Referring to fig. 1 and 2, a placing plate 39 is disposed on one side of the outer wall of the kettle body 1, the placing plate 39 is disposed below the communicating tube 3, a placing area 40 corresponding to the communicating tube 3 is disposed at the top end of the placing plate 39, a sampling bottle 41 disposed in the placing area 40 is disposed on the placing plate 39, a baffle ring 42 is vertically slidably connected to the communicating tube 3, the baffle ring 42 is disposed above the sampling bottle 41, the bottom end of the baffle ring 42 contacts with the top end bottle mouth of the sampling bottle 41, a plurality of ventilation holes 43 are uniformly formed at the top end of the baffle ring 42, the purpose of the arrangement is to align the sampling bottle 41 with the downward mouth of the communicating tube 3 by moving the baffle ring 42 upward, then placing the sampling bottle 41 in the placing area 40 on the placing plate 39, then the baffle ring 42 is moved downwards for the bottom of baffle ring 42 contacts with the bottleneck of sample bottle 41, and then when suction pump 5 during operation, the liquid in the cauldron body 1 then can get into communicating pipe 3 through sampling tube 2, hose 4, then follow communicating pipe 3 inflow sample bottle 41 in, can reduce liquid and flow into in the sample bottle 41 from communicating pipe 3 through baffle ring 42 this moment, the condition that liquid splashes out from the bottleneck of sample bottle 41 takes place, place in place the district 40 on place board 39 through placing sample bottle 41, can reduce the condition that handheld sample bottle 41 accepted the liquid that flows out from communicating pipe 3 takes place, the safety in utilization has been improved, and is simple and convenient to use.

As shown in fig. 5 and 8, the bottom end of the baffle ring 42 is coaxially provided with an annular embedded groove 44, the top end bottleneck of the sampling bottle 41 is vertically embedded in the embedded groove 44, the outer wall of the communicating pipe 3 is coaxially provided with a mounting ring 45 used for being above the baffle ring 42, a compression spring 46 is arranged between the mounting ring 45 and the baffle ring 42, one side of the baffle ring 42 is provided with a push rod 47, the push rod 47 drives the baffle ring 42 to vertically move upwards by pushing the push rod 47 upwards, the compression spring 46 is compressed, when the sampling bottle 41 is placed in the placement area 40 on the placement plate 39, the embedded groove 44 is aligned with the sampling bottle 41, the baffle ring 42 is downwardly moved at this moment, the top end bottleneck of the sampling bottle 41 enters the embedded groove 44 and contacts with the bottom of the embedded groove 44, then the push rod 47 is released, at this moment, the compression spring 46 can be in a compressed state, the baffle ring 42 can compress the sampling bottle 41 on the placement plate 39 through the compression spring 46 and the embedded groove 44, and the situation that the sampling bottle 41 is displaced due to vibration or error touch is reduced, and the sampling bottle 41 is simply and conveniently used.

As shown in fig. 5 and 8, the number of the embedded grooves 44 is several, and the diameters of the embedded grooves 44 are different from each other, so that when the sampling bottle 41 is placed in the placement area 40 on the placement plate 39, the bottle mouth of the sampling bottle 41 is aligned with one of the embedded grooves 44, the baffle ring 42 is moved downwards, the bottle mouth at the top of the sampling bottle 41 enters the embedded groove 44 aligned with the bottle mouth, and the sampling bottle 41 with various diameters can be used through the embedded grooves 44 with different diameters.

It will be apparent to those skilled in the art that various modifications and variations can be made to the present invention without departing from the spirit or scope of the invention. Thus, it is intended that the present invention also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.

Claims (6)

1. The utility model provides a methyl methacrylate production esterifying device, its characterized in that includes the cauldron body (1), sampling tube (2) are located cauldron body (1), and are equipped with the driving piece that is used for driving sampling tube (2) and reciprocates in cauldron body (1) on cauldron body (1), outer wall one side of cauldron body (1) is equipped with communicating pipe (3) of L shape, the last hose (4) that communicates of sampling tube (2), and hose (4) are kept away from one end of sampling tube (2) and are passed cauldron body (1) and communicating pipe (3) intercommunication, be equipped with suction pump (5) on communicating pipe (3), and the one end mouth of pipe of communicating pipe (3) is kept away from hose (4) is down, be equipped with on cauldron body (1) and be used for carrying out the stirring piece to the cauldron in body (1), the top of cauldron body (1) is equipped with inlet pipe (6), the bottom of cauldron body (1) is equipped with discharging pipe (7), be equipped with stop valve (8) on discharging pipe (7);

the device comprises a kettle body (1), and is characterized in that the driving part comprises a fixed ring (20) arranged in the middle of one side of the inner wall of the kettle body (1), a column body (21) is rotationally connected to the fixed ring (20), one end of the column body (21) is coaxially provided with a disc (22) positioned outside the fixed ring (20), the disc (22) is positioned in the kettle body (1), the top end of the disc (22) is provided with an arc plate (23), the sampling tube (2) is arranged at one end, far away from the disc (22), of the arc plate (23), and the kettle body (1) is provided with a rotating part for driving the column body (21) to rotate;

one end of the column body (21) deviating from the disc (22) penetrates through the kettle body (1) to extend out of the kettle body (1), the rotating piece comprises a second motor (24) arranged on one side of the outer wall of the kettle body (1), and one end of a rotating shaft of the second motor (24) is fixedly connected with the column body (21);

or the rotating piece comprises a gear (25) arranged on the column body (21) and positioned outside the kettle body (1) and a fixed plate (26) arranged on one side of the outer wall of the kettle body (1), wherein the fixed plate (26) is positioned below the gear (25), the top end of the fixed plate (26) is horizontally connected with a moving plate (27) in a sliding manner, the top end of the moving plate (27) is provided with a rack (28) meshed with the gear (25), and the fixed plate (26) is provided with a cylinder (29) for pushing the moving plate (27) to horizontally move;

or, the driver comprises a sliding block (32), two supporting plates (30) and two sliding columns (31), wherein the two supporting plates (30) are horizontally and vertically arranged on one side of the inner wall of the kettle body (1), the two supporting plates (30) are vertically opposite, the sliding block (32) is positioned between the two supporting plates (30), two opposite grooves (33) are formed in the top end of the sliding block (32), the two sliding columns (31) are vertically arranged between the two supporting plates (30), at the moment, the bottom ends of the two sliding columns (31) vertically penetrate through the two grooves (33) respectively, the sampling tube (2) is arranged on one side of the sliding block (32), a driving shaft (34) is rotatably connected between the two supporting plates (30), a third motor (35) is arranged at the top end of the kettle body (1) and is coaxially and fixedly connected with the driving shaft (34), and when the driving shaft (34) rotates, the driving shaft (34) is used for pushing the sliding block (32) to move vertically, and is connected with the driving assembly (32) through the driving assembly;

the transmission assembly comprises a driving column (36) arranged at one end of the sliding block (32) close to the driving shaft (34) and two annular grooves (37) obliquely arranged on the driving shaft (34), one ends of the two annular grooves (37) are intersected and communicated, and one end of the driving column (36) close to the driving shaft (34) is rotationally connected with an oval sliding block (38) positioned in one of the annular grooves (37).

2. The esterification device for producing methyl methacrylate according to claim 1, wherein the stirring piece comprises a rotating shaft (9) rotatably connected to the inner top end of the kettle body (1), a cross-shaped support (10) is arranged at the bottom end of the rotating shaft (9), four rotating grooves (12) are formed in the bottom end of the support (10), the four rotating grooves (12) are uniformly distributed along the circumferential direction of the rotating shaft (9), at the moment, the four rotating grooves (12) are opposite to each other in pairs, rotating columns (13) are rotatably connected in the four rotating grooves (12), stirring plates (14) are vertically downwards arranged at the bottom ends of the four rotating columns (13), and a driving piece for driving the rotating shaft (9) to rotate and simultaneously driving the four rotating columns (13) to rotate in the rotating grooves (12) is arranged on the kettle body (1).

3. The esterification device for producing methyl methacrylate according to claim 2, wherein the driving piece comprises a first motor (15) arranged at the top end of the kettle body (1) and used for driving the rotating shaft (9) to rotate and a cam (16) rotationally connected to the rotating shaft (9), the cam (16) is positioned above the bracket (10), the top end of the cam (16) is fixedly connected with the kettle body (1), a swivel (17) is coaxially and rotationally connected to the cam (16), four connecting rods (18) are arranged on the outer wall of the swivel (17), the four connecting rods (18) are uniformly distributed along the circumferential direction of the swivel (17), the top ends of the four swivel posts (13) are provided with fixing rods (19), and one ends of the four fixing rods (19) far away from the swivel posts (13) are rotationally connected with the four connecting rods (18) respectively.

4. The esterification device for producing methyl methacrylate according to claim 1, wherein a placing plate (39) is arranged on one side of the outer wall of the kettle body (1), the placing plate (39) is positioned below the communicating pipe (3), a placing area (40) corresponding to the communicating pipe (3) is arranged at the top end of the placing plate (39), a sampling bottle (41) positioned in the placing area (40) is placed on the placing plate (39), a baffle ring (42) is vertically and slidingly connected to the communicating pipe (3), the baffle ring (42) is positioned above the sampling bottle (41), the bottom end of the baffle ring (42) is in contact with the top end bottle mouth of the sampling bottle (41), and a plurality of ventilation holes (43) are uniformly formed in the top end of the baffle ring (42).

5. The esterification device for producing methyl methacrylate according to claim 4, wherein the bottom end of the baffle ring (42) is coaxially provided with an annular embedded groove (44), the top end bottle mouth of the sampling bottle (41) is vertically embedded in the embedded groove (44), the outer wall of the communicating pipe (3) is coaxially provided with a mounting ring (45) used for being arranged above the baffle ring (42), a compression spring (46) is arranged between the mounting ring (45) and the baffle ring (42), and one side of the baffle ring (42) is provided with a push rod (47).

6. The esterification apparatus for producing methyl methacrylate of claim 5, wherein the number of the insertion grooves (44) is plural, and the diameters of the insertion grooves (44) are different from each other.

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