Crystallization device for producing methylparaben

Abstract

The utility model discloses a crystallization device for producing methylparaben, which comprises a crystallization barrel, an outer cover plate is arranged on the crystallization barrel, a gear ring is movably connected inside the outer cover plate through a bearing, and an inner cover plate is movably connected inside the gear ring through a bearing. A stirring assembly is movably connected to the bottom of the inner cover plate, the bottom of the stirring assembly extends to the bottom end in the crystallization barrel, a plurality of stirring rods are fixedly connected to the outer side of the stirring assembly, a first gear and a second gear are driven to rotate through rotation of a main shaft, and finally a gear ring, a differential part and a stirring assembly body are driven to rotate; a stirring assembly and a circulating rod are utilized, the stirring rod stirs internal liquid and sucks liquid at the bottom to form circulation at the same time, heating is conducted in the circulation process, the liquid making contact with the inner wall of an electric heating pipeline is continuously changed in the circulation process, and therefore the situation that local overheating is not uniform in temperature can be avoided; and the heating process is relatively smooth and does not influence the crystallization quality.

Description

TECHNICAL FIELD

[0001] The utility model relates to hydroxybenzyl production technical field especially relates to a hydroxybenzyl production is with crystallization device. BACKGROUND

[0002] Hydroxybenzyl is also called methyl p-hydroxybenzoate, is a kind of widely used in cosmetics, food and pharmaceutical field antibacterial preservative.P-hydroxybenzoic acid ester preservative has broad-spectrum antibacterial, low concentration use, high efficiency and safety etc.Characteristics.The mechanism of action of hydroxybenzyl is mainly through destroying the cell membrane of microorganism, makes the protein in cell denaturation, and inhibits the activity of cell respiration enzyme and transferase system, to play antibacterial effect.Industrially, the preparation method of hydroxybenzyl is: methanol and p-hydroxybenzoic acid are added to the reaction kettle as raw material, heated to a certain temperature and esterification is carried out, under the action of catalyst, hydroxybenzyl and water are generated, hydroxybenzyl crystal is separated out through steps such as decolorization, concentration, crystallization, centrifugation etc.In the production process, hydroxybenzyl usually appears in the form of white crystalline powder or colorless crystal, has the characteristics of easy to dissolve in alcohol, ether and acetone, but slightly soluble in water.

[0003] In the prior art, the traditional crystallization device for hydroxybenzyl production does not have a good temperature control structure in temperature control, mostly directly heated by heating equipment, and directly heating can cause the liquid closest to the heating equipment to have a higher problem, and the liquid far away to have a slower problem, leading to the occurrence of local temperature too high and temperature uneven, which affects the quality of crystallization and ultimately affects the production of high-quality hydroxybenzyl crystal. UTILITY MODEL CONTENT

[0004] In order to solve the problems mentioned in the background art, the utility model provides a crystallization device for hydroxybenzyl production.

[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0006] A crystallization device for hydroxybenzyl production, comprising a crystallization barrel, an outer cover plate is arranged on the crystallization barrel, a gear ring is movably connected inside the outer cover plate through a bearing, an inner cover plate is movably connected inside the gear ring through a bearing, a stirring assembly is movably connected at the bottom of the inner cover plate and extends to the bottom end inside the crystallization barrel, a plurality of stirring rods are fixedly connected outside the stirring assembly, a circulation rod in communication with the inside of the stirring assembly is fixedly connected to the outside of the end closest to the outer cover plate and the end farthest from the outer cover plate of the stirring assembly, a plurality of circular holes in communication with the outside are formed in the circulation rod.

[0007] The main shaft is movably connected to the inside of the stirring assembly through a bearing, and the main shaft extends to the outside of the crystallization barrel to connect with a power device, and turbine blades are arranged on the outside of the main shaft.

[0008] The stirring assembly comprises a base, the top of the base is fixedly connected with an electric heating pipeline, the top of the electric heating pipeline is fixedly connected with a one-way valve, a circulating rod on the one-way valve is in communication with the inside of the electric heating pipeline through the one-way valve and can only communicate with liquid outside the one-way valve, and the circulating rod on the base is in communication with the inside of the electric heating pipeline through the base.

[0009] Further, the top of the one-way valve is fixedly connected with a differential gear, the differential gear is fixedly connected with the bottom of a gear ring and movably connected with the outer cover plate through the gear ring.

[0010] Further, the outside of the end of the main shaft extending to the outside of the outer cover plate is fixedly connected with a first gear, the first gear is meshingly connected with a second gear on one side, the second gear is meshingly connected with the gear ring, and the power device on the top of the main shaft is an electric motor.

[0011] Further, the outer cover plate is fixedly connected with a mounting bracket on the outside, and the mounting bracket is fixedly connected between the outer cover plate and the inner cover plate, and the second gear is movably connected between the inner cover plate and the mounting bracket through a bearing.

[0012] Further, the top of the mounting bracket is fixedly connected with a U-shaped bracket and the electric motor is fixed through the U-shaped bracket, the outside of the crystallization barrel is fixedly provided with a mounting ring and fixedly mounted between the mounting ring and a fixing base, and the top of the fixing base is provided with a data detection device and monitors various data in the crystallization barrel through the data detection device.

[0013] Further, the bottom of the crystallization barrel is provided with a discharge pipe, and the outside of the discharge pipe is provided with a control valve.

[0014] The stirring assembly has the advantages that:

[0015] 1. The rotation of the turbine blades generates negative pressure suction force, which is used to suck the liquid at the bottom through the multiple circulating rods on the bottom base, and then the liquid is discharged through the circulating rod on the top one-way valve after passing through the electric heating pipeline, during which the rotation of the main shaft drives the first gear and the second gear to rotate, and finally drives the gear ring, the differential gear and the stirring assembly main body to rotate, so that the liquid inside is stirred by the stirring assembly, the circulating rod and the stirring rod, the bottom liquid is formed into a cycle, and the liquid in contact with the inner wall of the electric heating pipeline is constantly changed during the heating process, so that the local overheating and uneven temperature can be avoided, and the heating process is relatively gentle and will not affect the crystallization quality. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 Structure diagram of the present application Figure 1 ;

[0017] Figure 2 Structure diagram of the present application Figure 2 ;

[0018] Figure 3 Structure diagram of the present application

[0019] Figure 4 Structure diagram of the present application

[0020] In the figure: 1, discharge pipe; 2, control valve; 3, mounting ring; 4, crystallization barrel; 5, mounting frame; 6, motor; 7, gear ring; 8, data detection equipment; 9, fixed seat; 10, second gear; 11, first gear; 12, outer cover plate; 13, inner cover plate; 14, stirring assembly; 141, check valve; 142, electric heating pipe; 143, base; 15, circulating rod; 16, stirring rod; 17, differential part; 18, main shaft; 19, turbine blade. DETAILED DESCRIPTION

[0021] The technical solutions of the present application will be described clearly and completely below in conjunction with the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0022] As shown in Figures 1-4 The present application provides a crystallization device for hydroxybenzyl ester production as shown in the figure, which comprises a crystallization barrel 4, an outer cover plate 12 is arranged on the crystallization barrel 4, a gear ring 7 is movably connected inside the outer cover plate 12 through a bearing, an inner cover plate 13 is movably connected inside the gear ring 7 through a bearing, a stirring assembly 14 is movably connected at the bottom of the inner cover plate 13 and extends to the bottom end inside the crystallization barrel 4 at the bottom of the stirring assembly 14, a plurality of stirring rods 16 are fixedly connected outside the stirring assembly 14, a circulating rod 15 which is in communication with the inside of the stirring assembly 14 is fixedly connected outside the end of the stirring assembly 14 closest to the outer cover plate 12 and the end farthest from the outer cover plate 12, a plurality of round holes which are in communication with the outside are formed on the circulating rod 15;

[0023] A main shaft 18 is movably connected inside the stirring assembly 14 through a bearing, the main shaft 18 extends to the outside of the crystallization barrel 4 through the inner cover plate 13 and is connected to a power equipment outside, turbine blades 19 are arranged outside the main shaft 18;

[0024] The stirring assembly 14 comprises a base 143, the top of which is fixedly connected with an electric heating pipe 142, the top of which is fixedly connected with a one-way valve 141, the circulating rod 15 on the one-way valve 141 communicates with the inside of the electric heating pipe 142 through the one-way valve 141 and can only communicate liquid outward through the one-way valve 141, and the circulating rod 15 on the base 143 communicates with the inside of the electric heating pipe 142 through the base 143.

[0025] Specifically, the top of the one-way valve 141 is fixedly connected with a differential part 17, the differential part 17 is fixedly connected with the bottom of the gear ring 7 and movably connected with the outer cover plate 12 through the gear ring 7.

[0026] Specifically, the end of the main shaft 18 extending to the outside of the outer cover plate 12 is fixedly connected with a first gear 11, one side of the first gear 11 is meshingly connected with a second gear 10, the second gear 10 is meshingly connected with the gear ring 7, and the power device at the top of the main shaft 18 is specifically an electric machine 6.

[0027] Specifically, the outer cover plate 12 is fixedly connected with a mounting bracket 5, and the outer cover plate 12 and the inner cover plate 13 are fixedly connected through the mounting bracket 5, the second gear 10 is movably connected between the inner cover plate 13 and the mounting bracket 5 through a bearing.

[0028] Specifically, the top of the mounting bracket 5 is fixedly connected with a U-shaped bracket and the electric machine 6 is fixed through the U-shaped bracket, the outside of the crystallization barrel 4 is fixedly provided with a mounting ring 3 and fixedly mounted between the mounting ring 3 and the fixing seat 9, the top of the fixing seat 9 is provided with a data detection device 8 and each item of data in the crystallization barrel 4 is monitored through the data detection device 8.

[0029] Specifically, the bottom of the crystallization barrel 4 is provided with a discharge pipe 1, and the outside of the discharge pipe 1 is provided with a control valve 2.

[0030] Working principle: when using the utility model, the inside is heated by the electric heating pipeline 142, the control motor 6 is started to drive the main shaft 18 and turbine blade 19 to rotate, the negative pressure suction force generated by the rotation of the turbine blade 19 is used to suck the liquid at the bottom through the multiple circulating rods 15 on the bottom base 143, then the liquid is discharged through the circulating rod 15 on the top one-way valve 141 after passing through the electric heating pipeline 142, the rotation of the main shaft 18 drives the first gear 11 and the second gear 10 to rotate, finally drives the gear ring 7, the differential part 17 and the stirring assembly 14 main body to rotate, the inside liquid is stirred by the stirring assembly 14 and the circulating rod 15 and the stirring rod 16 at the same time, the bottom liquid is pumped to form a cycle and heated in the process of circulation, the liquid in contact with the inner wall of the electric heating pipeline 142 is constantly changing, so that the situation of local overheating and uneven temperature can be avoided, and the heating process is relatively gentle and will not affect the crystallization quality, the one-way valve 141 is used, the liquid backflow can be prevented when the liquid surface is too high or splashes during the rotation of the inside liquid, the whole process is more reasonable and the structure is simple and the effect is obvious.

[0031] In the description of the specification, the description referring to the terms "embodiment", "each embodiment" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or preparation example are included in at least one embodiment or preparation example of the utility model. In the specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or preparation example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or preparation examples in a suitable manner.

[0032] The above is only the preferred specific implementation of the utility model, but the protection scope of the utility model is not limited to this, any skilled person in the art can make equivalent replacement or change according to the technical scheme and the utility model concept of the utility model within the technical range disclosed by the utility model, all should be covered in the protection scope of the utility model.

Claims

1. A crystallization device for producing methyl paraben, comprising a crystallization barrel (4), characterized in that: The crystallization barrel (4) is provided with an outer cover plate (12), the outer cover plate (12) is movably connected to a gear ring (7) via a bearing, the inner cover plate (13) is movably connected to a stirring assembly (14) at the bottom of the inner cover plate (13), and the bottom of the stirring assembly (14) extends to the bottom end of the crystallization barrel (4), the outer side of the stirring assembly (14) is fixedly connected to a plurality of stirring rods (16), the outer side of the end of the stirring assembly (14) closest to the outer cover plate (12) and the outer side of the end away from the outer cover plate (12) are both fixedly connected to a circulation rod (15) connected to the interior of the stirring assembly (14), and the circulation rod (15) is provided with a plurality of circular holes connected to the outside; The stirring assembly (14) is internally connected to a main shaft (18) through a bearing, and the main shaft (18) passes through the inner cover plate (13) and extends to the outside of the crystallization barrel (4) to be connected to an external power device. Turbine blades (19) are provided on the outside of the main shaft (18); The stirring assembly (14) includes a base (143), the top of the base (143) is fixedly connected to an electric heating pipe (142), the top of the electric heating pipe (142) is fixedly connected to a one-way valve (141), the circulation rod (15) on the one-way valve (141) is connected to the inside of the electric heating pipe (142) through the one-way valve (141), and can only communicate with liquid outwards due to the setting of the one-way valve (141), and the circulation rod (15) on the base (143) is connected to the inside of the electric heating pipe (142) through the base (143).

2. A crystallization device for producing methylparaben according to claim 1, characterized in that, A differential member (17) is fixedly connected to the top of the one-way valve (141), and the differential member (17) is fixedly connected to the bottom of the gear ring (7) and movably connected to the outer cover plate (12) via the gear ring (7).

3. A crystallization device for producing methylparaben according to claim 1, characterized in that, The first gear (11) is fixedly connected to the outer side of one end of the main shaft (18) extending to the outer side of the outer cover plate (12); a second gear (10) is meshedly connected to one side of the first gear (11); the second gear (10) is meshedly connected to the gear ring (7); and the power device on the top of the main shaft (18) is specifically a motor (6).

4. A crystallization device for producing methylparaben according to claim 3, characterized in that, The outer side of the outer cover plate (12) is fixedly connected to a mounting frame (5), and the outer cover plate (12) and the inner cover plate (13) are fixedly connected via the mounting frame (5); the second gear (10) is movably connected between the inner cover plate (13) and the mounting frame (5) via a bearing.

5. A crystallization device for producing methylparaben according to claim 4, characterized in that, The top of the mounting frame (5) is fixedly connected to a U-shaped frame and the motor (6) is fixed via the U-shaped frame. The outer side of the crystallization barrel (4) is fixedly provided with a mounting ring (3) and is fixedly installed between the mounting ring (3) and a fixing seat (9). The top of the fixing seat (9) is provided with a data detection device (8) and various data inside the crystallization barrel (4) are monitored via the data detection device (8).

6. A crystallization device for producing methylparaben according to claim 1, characterized in that, A discharge pipe (1) is provided at the bottom of the crystallization barrel (4), and a control valve (2) is provided on the outside of the discharge pipe (1).

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