Extraction equipment for diethylene glycol monovinyl ether

Abstract

The utility model relates to the technical field of diethylene glycol monovinyl ether extraction, and particularly discloses diethylene glycol monovinyl ether extraction equipment which comprises a bottom plate and a distillation retort, a heating plate is arranged on the outer wall of the distillation retort, a heat conduction pipe is communicated with the upper end of the outer wall of the distillation retort, and a condensation sleeve is arranged on the outer wall of the heat conduction pipe. A sealing mechanism is arranged on the outer side of the heat conduction pipe and comprises an air exhaust cover fixedly connected to the outer wall of the heat conduction pipe, the outer wall of the air exhaust cover communicates with an air exhaust connector, and the outer wall of the air exhaust cover is fixedly connected with a mounting ring; the main shaft drives the stirring blades to rotate, so that the liquid fluidity is improved, local overheating is avoided, and the purification effect and safety are further improved; the electric push rod shrinks to drive the lifting rotating disc to descend to be separated from sealing; the servo motor drives the lifting rotating disc to rotate to rotate an empty collecting barrel to a sealing position; the collecting barrel can be quickly replaced without dismounting the seal, frequent vacuum relief and resealing are avoided, operation is easy and convenient, and working efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to diethylene glycol monovinyl ether extraction technical field, specifically disclose a diethylene glycol monovinyl ether extraction equipment. BACKGROUND

[0002] Diethylene glycol monovinyl ether (DEGVE) as the key vinyl ether monomer, in water-based paint, UV curing resin and functional polymer synthesis field application is widespread. Its industrial preparation usually through etherification reaction is completed, needs the help of distillation technology after the reaction and separates and purifies.

[0003] In prior art, the reduced pressure distillation is the commonly used purification means, its utilize liquid boiling point with the characteristic of the outside world pressure reduction and drop, through reducing the pressure in the distillation system, make target material boil under the temperature lower than the normal pressure boiling point, avoid the decomposition or side reaction caused by high temperature. The specific distillation purification steps are as follows: first separate low boiling point solvent (such as methanol, ethanol), then remove low boiling point homologous impurities (for example diethylene glycol monovinyl ether), then collect target product diethylene glycol monovinyl ether, again separate high boiling point by-product diethylene glycol divinyl ether, finally discharge unreacted raw material diethylene glycol (DEG) and high polymer impurities, thereby obtain high purity DEGVE.

[0004] The existing diethylene glycol monovinyl ether distillation purification device has two problems: when collecting different boiling point products, need to be received by multiple collection bottles, since the reduced pressure distillation needs to maintain the system vacuum degree, the liquid outlet needs to be deep into the collection bottle inside and seal the interface through the sealing mechanism, resulting in that when replacing the collection bottle, the old bottle needs to be disassembled and sealed, and then a new collection bottle is taken and resealed and installed, which is complicated and low in efficiency; in addition, the liquid in the distillation tank is in a static state during the distillation process, which is easy to cause local overheating due to uneven heating, affecting the purification effect and safety. Therefore, it is urgent to design a new diethylene glycol monovinyl ether extraction equipment to solve the above problems. UTILITY MODEL CONTENTS

[0005] The utility model provides a diethylene glycol monovinyl ether extraction equipment, convenient for replacing the collection cylinder, simple operation and high replacement efficiency; at the same time, the fluidity of the liquid in the distillation tank is improved, the local overheating phenomenon is avoided, and the purification effect and safety are improved.

[0006] The utility model discloses a kind of diethylene glycol monovinyl ether extraction equipment, including bottom plate and retort, the outer wall of the retort is equipped with heating plate, the upper end of the outer wall of the retort is communicated with heat pipe, the outer wall of the heat pipe is provided with condensing sleeve, the outer side of the heat pipe is provided with sealing mechanism, the sealing mechanism includes the air extraction cover fixedly connected to the outer wall of heat pipe, the outer wall of the air extraction cover is communicated with air extraction connector, the outer wall of the air extraction cover is fixedly connected with mounting ring, the lower end of the mounting ring is equipped with annular sealing pad;

[0007] The right side of the retort is provided with a lifting rotary disc, and a plurality of uniformly distributed collection cylinders are placed on the upper end of the lifting rotary disc. One of the collection cylinders abuts against the lower end of the annular sealing pad. A driving mechanism is arranged on the lower side of the lifting rotary disc.

[0008] The driving mechanism includes an electric push rod mounted on the upper end of the bottom plate. A connecting cover is mounted on the output end of the electric push rod. A circular plate is fixedly connected to the upper end of the connecting cover. A rotating shaft fixedly connected to the lifting rotary disc is rotatably connected to the upper end of the circular plate. A servo motor fixedly connected to the rotating shaft is mounted on the lower end of the circular plate.

[0009] A main shaft is rotatably connected to the inside of the retort. A plurality of stirring blades are mounted on the outer wall of the main shaft.

[0010] As a preferred diethylene glycol monovinyl ether extraction equipment of the utility model, an L-shaped plate is mounted on the left end of the retort. A transmission shaft penetrating through the left end of the retort is fixedly connected between the L-shaped plate and the main shaft. A driving motor fixedly connected to the transmission shaft is mounted on the outer wall of the L-shaped plate.

[0011] As a preferred diethylene glycol monovinyl ether extraction equipment of the utility model, a plurality of uniformly distributed positioning sleeves are fixedly connected to the upper end of the lifting rotary disc. The plurality of collection cylinders are respectively matched with the interiors of the plurality of positioning sleeves.

[0012] As a preferred diethylene glycol monovinyl ether extraction equipment of the utility model, a plurality of guide cylinders are fixedly connected to the upper end of the bottom plate. A sliding rod fixedly connected to the circular plate is slidably connected to the interior of each guide cylinder.

[0013] As a preferred diethylene glycol monovinyl ether extraction equipment of the utility model, an annular sliding groove is formed in the upper end of the circular plate. An annular sliding block is slidably connected to the interior of the annular sliding groove. An annular plate is fixedly connected between the annular sliding block and the lifting rotary disc.

[0014] As a preferred diethylene glycol monovinyl ether extraction equipment of the utility model, a water inlet pipe connector is communicated with the lower side of the outer wall of the condensing sleeve. A water outlet pipe connector is communicated with the upper side of the outer wall of the condensing sleeve.

[0015] As a kind of diethylene glycol monovinyl ether extraction equipment preferred of the utility model, the outer wall of the mounting ring is fixedly connected with reinforcing plate, the left end of the reinforcing plate is fixedly connected with distillation tank.

[0016] As a kind of diethylene glycol monovinyl ether extraction equipment preferred of the utility model, the upper side of the outer wall of distillation tank is communicated with liquid feeding valve pipe, the left side of the outer wall of distillation tank is communicated with liquid discharge valve pipe.

[0017] The beneficial effects of the utility model are:

[0018] 1, after the liquid to be treated is added into distillation tank, heating plate heats the liquid in distillation tank to a certain temperature, steam is led out through heat pipe, water in condensing sleeve condenses steam, main shaft drives stirring blade to rotate, improves liquid flowability, avoids local overheating, and then improves purification effect and safety;

[0019] 2, in initial state, collection cylinder abuts against annular sealing gasket, suction connector is connected with suction pump to maintain system vacuum to collect condensate, after collection is completed, electric push rod retracts to drive lifting rotating disc to descend and separate from sealing, servo motor drives it to rotate to rotate empty collection cylinder to sealing position, electric push rod extends to restore sealing to continue collection, without disassembling sealing, empty collection cylinder can be quickly replaced, frequent vacuum release and resealing are avoided, operation is simple, and working efficiency is improved. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the specific embodiment of the utility model or the technical scheme in prior art, the drawings needed to be used in the specific embodiment or prior art description will be briefly introduced below. In all drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, various elements or parts are not necessarily drawn according to actual proportion.

[0021] Figure 1 It is overall front view of the utility model a kind of diethylene glycol monovinyl ether extraction equipment;

[0022] Figure 2 It is the utility model Figure 1 Enlarged view of A in it;

[0023] Figure 3 It is the local structure diagram of the utility model a kind of diethylene glycol monovinyl ether extraction equipment;

[0024] Figure 4 It is the local structure diagram of the utility model a kind of diethylene glycol monovinyl ether extraction equipment.

[0025] The markings in the diagram are: 1. Distillation tank; 2. Base plate; 3. Heat pipe; 4. Condensation sleeve; 5. Evacuation hood; 6. Mounting ring; 7. Annular sealing gasket; 8. Evacuation connector; 9. Electric actuator; 10. Connecting cover; 11. Circular plate; 12. Rotating shaft; 13. Lifting rotating disk; 14. Servo motor; 15. Positioning sleeve; 16. Collection cylinder; 17. Main shaft; 18. Stirring blades; 19. L-shaped plate; 20. Drive shaft; 21. Drive motor; 22. Heating plate; 23. Water inlet pipe connector; 24. Water outlet pipe connector; 25. Reinforcing plate. Detailed Implementation

[0026] The present invention will be further described below with reference to the accompanying drawings and specific embodiments to aid in understanding its content. Unless otherwise specified, the methods used in this invention are conventional methods; the raw materials and apparatus used, unless otherwise specified, are conventional commercially available products.

[0027] Please see Figures 1-4 An extraction device for diethylene glycol monovinyl ether includes a base plate 2 and a distillation tank 1. A heating plate 22 is installed on the outer wall of the distillation tank 1. A heat conduction pipe 3 is connected to the upper end of the outer wall of the distillation tank 1. A condenser sleeve 4 is provided on the outer wall of the heat conduction pipe 3. A sealing mechanism is provided on the outer side of the heat conduction pipe 3. The sealing mechanism includes a suction hood 5 fixedly connected to the outer wall of the heat conduction pipe 3. A suction connector 8 is connected to the outer wall of the suction hood 5. An installation ring 6 is fixedly connected to the outer wall of the suction hood 5. An annular sealing gasket 7 is installed at the lower end of the installation ring 6.

[0028] A lifting rotating plate 13 is provided on the right side of the distillation tank 1. Multiple evenly distributed collection cylinders 16 are placed on the upper end of the lifting rotating plate 13. One of the collection cylinders 16 abuts against the lower end of the annular sealing gasket 7. A drive mechanism is provided on the lower side of the lifting rotating plate 13.

[0029] The drive mechanism includes an electric push rod 9 mounted on the upper end of the base plate 2. A connecting cover 10 is mounted on the output end of the electric push rod 9. A circular plate 11 is fixedly connected to the upper end of the connecting cover 10. A rotating shaft 12, which is fixedly connected to the lifting rotating disk 13, is rotatably connected to the upper end of the circular plate 11. A servo motor 14, whose output end is fixedly connected to the rotating shaft 12, is mounted on the lower end of the circular plate 11.

[0030] The interior of the distillation tank 1 is rotatably connected to a main shaft 17, and multiple stirring blades 18 are installed on the outer wall of the main shaft 17.

[0031] In this embodiment: the liquid to be processed is added into the distillation tank 1, and the heating plate 22 heats the liquid in the distillation tank 1 to a certain temperature (the temperature controller can control the temperature of the heating plate 22 in a gradient, which is the prior art). The liquid is then rotated by the main shaft 17 and the stirring blade 18. The stirring blade 18 improves the fluidity of the liquid, thereby avoiding local overheating and improving the purification effect and safety.

[0032] Steam is discharged through heat pipe 3, and when water passes through condenser jacket 4, the steam is condensed.

[0033] In the initial state, one of the collection cylinders 16 abuts against the annular sealing gasket 7, and the vacuum connector 8 is connected to the vacuum pump to maintain the system vacuum, so that the condensate enters the interior of the collection cylinder 16 through the heat conduction pipe 3.

[0034] After a collection cylinder 16 has finished collecting, the electric push rod 9 retracts, causing the circular plate 11 to move downwards. Simultaneously, the rotating shaft 12, the lifting rotating disk 13, and multiple collection cylinders 16 move downwards to a certain height, disengaging from the seal. At the same time, the servo motor 14 drives the rotating shaft 12 to rotate at a certain angle, causing the lifting rotating disk 13 to rotate and rotate the next empty collection cylinder 16 to the sealing position. The electric push rod 9 extends, the lifting rotating disk 13 rises, and the annular sealing gasket 7 abuts against the new collection cylinder 16, restoring the seal and continuing collection. Following the vacuum distillation process, low-boiling-point solvents and low-boiling-point homologue impurities are separated sequentially, and the target product diethylene glycol monovinyl ether is collected. Then, high-boiling-point byproducts are separated. The electric push rod 9 is an electric push rod with worm gear drive, which has a self-locking operation to maintain the stability of its output end. By rotating and lifting the lifting rotating disk 13, the collection cylinder 16 can be quickly replaced without disassembling the seal, avoiding frequent vacuum release and resealing. The operation is simple and improves work efficiency.

[0035] As a technical optimization of this utility model, an L-shaped plate 19 is installed on the left end of the distillation tank 1. A transmission shaft 20 that passes through the left end of the distillation tank 1 is fixedly connected between the L-shaped plate 19 and the main shaft 17. A drive motor 21 whose output end is fixedly connected to the transmission shaft 20 is installed on the outer wall of the L-shaped plate 19.

[0036] In this embodiment: the drive motor 21 is fixed to the L-shaped plate 19, and its output end passes through the left end of the distillation tank 1 via the transmission shaft 20, driving the main shaft 17 and the stirring blades 18 to rotate and stir the liquid in the tank.

[0037] As a technical optimization of this utility model, the upper end of the lifting rotating disk 13 is fixedly connected with a plurality of evenly distributed positioning sleeves 15, and a plurality of collecting cylinders 16 are respectively adapted to the interior of the plurality of positioning sleeves 15.

[0038] In this embodiment: the positioning sleeve 15 at the upper end of the lifting rotating disk 13 is adapted to the shape of the collecting cylinder 16. After the collecting cylinder 16 is inserted into the positioning sleeve 15, it is limited to ensure that its upper end is accurately aligned with the annular sealing gasket 7.

[0039] As a technical optimization of this utility model, a plurality of guide cylinders are fixedly connected to the upper end of the base plate 2, and each of the plurality of guide cylinders is slidably connected to a slide rod that is fixedly connected to the circular plate 11.

[0040] In this embodiment: the guide cylinder on the base plate 2 is slidably engaged with the slide rod of the circular plate 11. When the electric push rod 9 drives the circular plate 11 to rise and fall, the slide rod moves linearly inside the guide cylinder, limiting the horizontal displacement of the circular plate 11.

[0041] As a technical optimization of this utility model, an annular groove is provided at the upper end of the circular plate 11, and an annular slider is slidably connected inside the annular groove. An annular plate is fixedly connected between the annular slider and the lifting rotating disk 13.

[0042] In this embodiment, the annular groove at the upper end of the circular plate 11 slides in conjunction with the annular slider of the lifting rotating disk 13. When the servo motor 14 drives the rotating shaft 12, the annular slider rotates in the groove, so that the lifting rotating disk 13 rotates smoothly.

[0043] As a technical optimization of this utility model, the lower side of the outer wall of the condenser sleeve 4 is connected to a water inlet pipe connector 23, and the upper side of the outer wall of the condenser sleeve 4 is connected to a water outlet pipe connector 24.

[0044] In this embodiment: the water inlet pipe joint 23 on the outer wall of the condenser jacket 4 is connected to the cooling water circulation system. Cold water enters from the bottom and absorbs the heat of the steam in the heat conduction pipe 3. Hot water is discharged from the water outlet pipe joint 24 on the top, forming a condensation cycle.

[0045] As a technical optimization of this utility model, the outer wall of the extraction hood 5 and the mounting ring 6 are jointly fixedly connected to a reinforcing plate 25, and the left end of the reinforcing plate 25 is fixedly connected to the distillation tank 1.

[0046] In this embodiment: one end of the reinforcing plate 25 is fixed to the distillation tank 1, and the other end is connected to the vacuum hood 5 and the mounting ring 6 to enhance the structural strength of the sealing mechanism.

[0047] As a technical optimization of this utility model, a liquid addition valve pipe is connected to the upper side of the outer wall of the distillation tank 1, and a liquid discharge valve pipe is connected to the left side of the outer wall of the distillation tank 1.

[0048] In this embodiment: the liquid addition valve pipe on the upper side of the distillation tank 1 is used to inject the material to be processed, and the liquid discharge valve pipe on the left side is used to discharge the high-boiling-point residual impurities after distillation.

[0049] The working principle and usage process of this utility model are as follows: The liquid to be processed is injected through the liquid addition valve pipe on the upper side of the distillation tank 1, and then the valve of the liquid addition valve pipe is closed. The heating plate 22 heats the liquid in the distillation tank 1 to a certain temperature (the temperature controller can control the temperature of the heating plate 22 in a gradient, which is the prior art). The main shaft 17 and the stirring blade 18 are driven to rotate by the drive motor 21 through the transmission shaft 20. The stirring blade 18 improves the fluidity of the liquid, so as to avoid local overheating and thus improve the purification effect and safety.

[0050] Steam is discharged through heat pipe 3, and water enters through water inlet pipe joint 23 and exits through water outlet pipe joint 24 to condense the steam.

[0051] In the initial state, one of the collection cylinders 16 abuts against the annular sealing gasket 7, and the vacuum connector 8 is connected to the vacuum pump to maintain the system vacuum, so that the condensate enters the interior of the collection cylinder 16 through the heat conduction pipe 3.

[0052] After a collection cylinder 16 has finished collecting, the electric push rod 9 retracts, causing the circular plate 11 to move downwards. Simultaneously, the rotating shaft 12, the lifting rotating disk 13, and multiple collection cylinders 16 move downwards to a certain height, disengaging from the seal. At the same time, the servo motor 14 drives the rotating shaft 12 to rotate at a certain angle, causing the lifting rotating disk 13 to rotate and rotate the next empty collection cylinder 16 to the sealing position. The electric push rod 9 extends, the lifting rotating disk 13 rises, and the annular sealing gasket 7 abuts against the new collection cylinder 16, restoring the seal and continuing collection. Following the vacuum distillation process, low-boiling-point solvents and low-boiling-point homologue impurities are separated sequentially. The target product, diethylene glycol monovinyl ether, is collected, followed by the separation of high-boiling-point byproducts. Finally, the remaining impurities are discharged through the drain valve. The electric push rod 9 is an electric push rod with worm gear drive, which has a self-locking function to maintain the stability of its output end. By rotating and lifting the lifting rotating disk 13, the collection cylinder 16 can be quickly replaced without disassembling the seal, avoiding frequent vacuum release and resealing. This simplifies operation and improves work efficiency.

[0053] In the description of this utility model, it should be understood that the terms "left", "right", "up", "down", "top", "bottom", "front", "back", "inner", "outer", "back", "middle", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0054] However, the above description is only a specific embodiment of this utility model and should not be construed as limiting the scope of implementation of this utility model. Therefore, any substitution of equivalent components or equivalent changes and modifications made in accordance with the scope of protection of this utility model should still fall within the scope of the claims of this utility model.

Claims

1. A diethylene glycol monovinyl ether extraction apparatus comprising a base plate (2) and a distillation tank (1), the outer wall of the distillation tank (1) being provided with a heating plate (22), characterized in that: The upper end of the outer wall of the distillation tank (1) is communicated with a heat conducting pipe (3), the outer wall of the heat conducting pipe (3) is provided with a condensing sleeve (4), the outer side of the heat conducting pipe (3) is provided with a sealing mechanism, the sealing mechanism comprises an air extraction cover (5) fixedly connected to the outer wall of the heat conducting pipe (3), the outer wall of the air extraction cover (5) is communicated with an air extraction joint (8), the outer wall of the air extraction cover (5) is fixedly connected with a mounting ring (6), the lower end of the mounting ring (6) is mounted with an annular sealing gasket (7). The right side of the distillation tank (1) is provided with a lifting rotary disc (13), the upper end of the lifting rotary disc (13) is placed with a plurality of uniformly distributed collection cylinders (16), one of the collection cylinders (16) abuts the lower end of the annular sealing gasket (7), the lower side of the lifting rotary disc (13) is provided with a driving mechanism. The driving mechanism comprises an electric push rod (9) mounted on the upper end of the bottom plate (2), the output end of the electric push rod (9) is mounted with a connecting cover (10), the upper end of the connecting cover (10) is fixedly connected with a circular plate (11), the upper end of the circular plate (11) is rotatably connected with a rotating shaft (12) fixedly connected with the lifting rotary disc (13), the lower end of the circular plate (11) is mounted with a servo motor (14) with the output end fixedly connected with the rotating shaft (12). The inside of the distillation tank (1) is rotatably connected with a main shaft (17), the outer wall of the main shaft (17) is mounted with a plurality of stirring blades (18).

2. A diethylene glycol monovinyl ether extraction apparatus according to claim 1, wherein: The left end of the distillation tank (1) is mounted with an L-shaped plate (19), the L-shaped plate (19) and the main shaft (17) are fixedly connected with a transmission shaft (20) penetrating through the left end of the distillation tank (1), the outer wall of the L-shaped plate (19) is mounted with a driving motor (21) with the output end fixedly connected with the transmission shaft (20).

3. A diethylene glycol monovinyl ether extraction apparatus according to claim 1, wherein: The upper end of the lifting rotary disc (13) is fixedly connected with a plurality of uniformly distributed positioning sleeves (15), a plurality of the collection cylinders (16) are respectively matched with the interiors of a plurality of the positioning sleeves (15).

4. The diethylene glycol monovinyl ether extraction apparatus of claim 1, wherein: The upper end of the bottom plate (2) is fixedly connected with a plurality of guide cylinders, the interiors of a plurality of the guide cylinders are slidably connected with slide rods fixedly connected with the circular plate (11).

5. The diethylene glycol monovinyl ether extraction apparatus of claim 1, wherein: The upper end of the circular plate (11) is provided with an annular sliding groove, the interior of the annular sliding groove is slidably connected with an annular sliding block, the annular sliding block and the lifting rotary disc (13) are fixedly connected with an annular plate.

6. The diethylene glycol monovinyl ether extraction apparatus of claim 1, wherein: The lower side of the outer wall of the condensing sleeve (4) is communicated with a water inlet pipe joint (23), the upper side of the outer wall of the condensing sleeve (4) is communicated with a water outlet pipe joint (24).

7. The diethylene glycol monovinyl ether extraction apparatus of claim 1, wherein: The outer wall of the air extraction cover (5) and the mounting ring (6) are fixedly connected with a reinforcing plate (25), the left end of the reinforcing plate (25) is fixedly connected with the distillation tank (1).

8. The diethylene glycol monovinyl ether extraction apparatus of claim 1, wherein: The upper side of the outer wall of the distillation tank (1) is communicated with a liquid adding valve pipe, the left side of the outer wall of the distillation tank (1) is communicated with a liquid discharge valve pipe.

Images