CN215136948U

CN215136948U - a thin film evaporator

Info

Publication number: CN215136948U
Application number: CN202121553056.1U
Authority: CN
Inventors: 沈海清; 沈子然; 邵文武
Original assignee: Nantong Hong Yang Chemical Co ltd
Current assignee: Nantong Hong Yang Chemical Co ltd
Priority date: 2021-07-08
Filing date: 2021-07-08
Publication date: 2021-12-14
Anticipated expiration: 2031-07-08

Abstract

The utility model discloses a thin film evaporator, which comprises a casing. The casing comprises an exhaust tank, an evaporation tank, and a lower head connected to the lower end of the evaporation tank. The upper end of the evaporation tank is connected with an exhaust tank. The top of the outer side wall is provided with an exhaust hole, the lower part of the inner cavity is provided with a material inlet, and an exhaust fan is arranged in the exhaust hole; a main shaft is vertically arranged inside the casing, one end of the main shaft is rotatably connected to the lower head, and the other One end is rotatably connected to the exhaust tank and runs through the exhaust tank. Several fixing rings are set on the main shaft from top to bottom, and several connecting rods are evenly arranged on the outer circumferential surface of the fixed ring, and several connecting rods are crossed. Arrangement, one end of the connecting rod away from the fixing ring is provided with a scraper column, and the outer side wall of the scraper column rotates relative to the inner side wall of the casing. The utility model not only has a small friction surface of the scraper and is not easy to wear, but also prevents the ground powder from falling into the material liquid, prevents the material from being polluted by evaporation, and improves the stability of the evaporator.

Description

Film evaporator

Technical Field

The utility model relates to an evaporator especially relates to a film evaporator.

Background

The scraper film evaporator is characterized in that a heating steam jacket is arranged outside a shell, a rotatable scraper is arranged inside the shell, and the scraper is driven by a rotating shaft at the center of a cylinder. After the raw material liquid is added from the upper part of the evaporator along the tangential direction, a downward-rotating film is formed along the inner wall surface of the shell under the drive of gravity and a rotating scraper, the finished liquid is discharged from the bottom of the evaporator, and the secondary steam is discharged from the upper part of the evaporator after passing through the demister. The wiped film evaporator has short evaporation time and high operation elasticity, and is particularly suitable for evaporation and concentration of high-viscosity materials and easily crystallized particle-containing materials. Therefore, the method is widely applied to the industrial fields of chemical industry, petrifaction, medicine and the like.

When the scraper of the traditional film evaporator runs, the problems of large film scraping resistance, rapid scraper abrasion and large energy loss exist, and the problems are particularly obvious when the equipment specification is large. Traditional rectangle scraper blade friction surface is big, and the powder that wearing and tearing are many and grind out can drop to the feed liquid in for the material evaporation can pollute, has reduced the stability of evaporimeter.

SUMMERY OF THE UTILITY MODEL

In order to solve the defects of the technology, the utility model provides a film evaporator.

In order to solve the technical problem, the utility model discloses a technical scheme is: a film evaporator comprises a shell, wherein the shell comprises an exhaust tank, an evaporation tank and a lower end enclosure connected to the lower end of the evaporation tank, the upper end of the evaporation tank is connected with the exhaust tank, an exhaust hole is formed in the upper portion of the outer side wall of the exhaust tank, a material inlet is formed in the lower portion of an inner cavity, and an exhaust fan is arranged in the exhaust hole;

a main shaft is vertically arranged in the shell, one end of the main shaft is rotatably connected with the lower end enclosure, the other end of the main shaft is rotatably connected with the exhaust tank and penetrates through the exhaust tank, a motor is arranged above the exhaust tank, an output shaft of the motor is connected with the top of the main shaft, a distributor and a gas-liquid separator are respectively arranged on the main shaft, and the distributor and the gas-liquid separator are both positioned in the exhaust tank;

the spacer sleeve is equipped with the solid fixed ring of a plurality of from top to bottom on the main shaft, evenly is provided with a plurality of connecting rod on the outer periphery of solid fixed ring, and the connecting rod can dismantle with solid fixed ring respectively and meet, and a plurality of connecting rod is the cross and arranges, and the one end that solid fixed ring was kept away from to the connecting rod is provided with scrapes the post, scrapes the lateral wall of post and rotates for the inside wall of casing.

Preferably, the evaporating pot comprises an upper pot body and a lower pot body, wherein heating jackets are sleeved outside the upper pot body and the lower pot body, and steam inlets and condensed water outlets are arranged on the heating jackets.

Preferably, the gas-liquid separator is located above the distributor but below the vent, and the distributor is located below the feed inlet.

Preferably, the scraping column comprises a fixed shaft and a scraping cylinder, the scraping cylinder is sleeved on the fixed shaft, the scraping cylinder rotates by taking the fixed shaft as an axis, and the end part of the fixed shaft is fixedly connected with the connecting rod.

Preferably, one end of the scraping cylinder, which is far away from the inner wall of the shell, is provided with a limiting plate, and the limiting plate is fixedly connected with the fixed shaft and is axially parallel to the fixed shaft.

Preferably, a material outlet is arranged below the lower end enclosure.

Preferably, the top of exhaust can is provided with the support, matches on the support and is provided with the motor.

The utility model discloses not only the scraper blade friction surface is little, and difficult wearing and tearing are quick detachable change moreover, and the adjustment wiped film thickness of being convenient for, material evaporation is stable, and the powder of having avoided simultaneously grinding out drops in the feed liquid, prevents that the material evaporation from taking place to pollute, has improved the stability of evaporimeter.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is a schematic cross-sectional structure of the housing.

Fig. 3 is a schematic cross-sectional view of fig. 1.

Fig. 4 is a partially enlarged schematic view of fig. 3.

In the figure: 1. a housing; 2. an exhaust tank; 3. an evaporator tank; 4. a motor; 5. a main shaft; 6. a lower end enclosure; 7. a heating jacket; 8. a distributor; 9. a gas-liquid separator; 11. a fixed shaft; 12. a scraping cylinder; 13. a limiting plate; 21. an exhaust hole; 22. an exhaust fan; 23. a material inlet; 31. feeding the tank body; 32. a tank body is arranged; 51. a fixing ring; 52. a connecting rod; 53. scraping the column; 61. a material outlet; 71. a steam inlet; 72. and a condensed water outlet.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

The film evaporator shown in fig. 1 comprises a shell 1, wherein the shell 1 comprises an exhaust tank 2, an evaporation tank 3 and a lower end enclosure 6 connected to the lower end of the evaporation tank 3, and a material outlet 61 is arranged below the lower end enclosure 6. The upper end of evaporating pot 3 is connected with exhaust can 2, and the lateral wall of exhaust can 2 and the evaporating pot 3 junction is established to the inclined wall for the feed liquid flows along the inside wall of evaporating pot 3. An exhaust hole 21 is formed in the upper portion of the outer side wall of the exhaust tank 2, a material inlet 23 is formed in the lower portion of the inner cavity, and an exhaust fan 22 is arranged in the exhaust hole 21; the evaporated gas enters the exhaust tank 2 and is exhausted by the exhaust fan 22.

As shown in fig. 3, a main shaft 5 is vertically arranged inside the housing 1, one end of the main shaft 5 is rotatably connected with a lower seal head 6, the other end of the main shaft 5 is rotatably connected with an exhaust tank 2 and penetrates through the exhaust tank 2, a motor 4 is arranged above the exhaust tank 2, a support is arranged at the top of the exhaust tank 2, and the motor 4 is arranged on the support in a matching manner. An output shaft of the motor 4 is connected with the top of a main shaft 5, a distributor 8 and a gas-liquid separator 9 are respectively installed on the main shaft 5, and the distributor 8 and the gas-liquid separator 9 are both positioned in the exhaust tank 2; the gas-liquid separator 9 is located above the distributor 8 but below the gas discharge holes 21, and the distributor 8 is located below the material inlet 23.

The evaporating pot 3 comprises an upper pot body 31 and a lower pot body 32, the heating jackets 7 are respectively sleeved outside the upper pot body 31 and the lower pot body 32, and a steam inlet 71 and a condensed water outlet 72 are respectively arranged on the heating jackets 7. Spiral steam pipes are correspondingly wound in the heating jacket 7, so that the upper tank body 31 and the lower tank body 32 are heated uniformly, the evaporation effect is better, steam enters from the steam inlet 71 during heating, and heated steam condensate flows out from the condensate outlet 72 for cyclic heating. The upper tank 31 and the lower tank 32 are connected through flange bolts. The side wall of the joint of the upper tank body 31 and the lower tank body 32 is conical, so that the tank opening is reduced, the evaporated feed liquid is convenient to collect, the evaporation is uniform, and the feed liquid is fully evaporated.

The spindle 5 is provided with a plurality of fixing rings 51 at intervals from top to bottom, and the spindle 5 can drive the fixing rings 51 to rotate along with the spindle 5. The fixing rings 51 are respectively arranged at different heights of the main shaft 5, so that adjustment according to actual production needs and different shell shapes is facilitated, and transformation of old production equipment is facilitated. Each of the fixing rings 51 forms a layer of scraper, and the number of fixing rings 51 and the spacing between adjacent fixing rings 51 are adjusted according to the height of the evaporation tank 3 and the actual production requirements.

As shown in fig. 2, a plurality of connecting rods 52 are uniformly arranged on the outer circumferential surface of the fixing ring 51, the connecting rods 52 are detachably connected with the fixing ring 51, the connecting rods 52 are arranged in a cross shape, the number of the connecting rods 52 on the fixing ring 51 can be adjusted according to actual production requirements, in this embodiment, the number of the connecting rods 52 is four, and the number of the connecting rods 52 can be more than or less than that of this embodiment. The end of the connecting rod 52 far away from the fixing ring 51 is provided with a scraping column 53, the scraping column 53 is cylindrical, and the outer side wall of the scraping column 53 rotates relative to the inner side wall of the shell 1.

Scrape and be equipped with the gap with film thickness is the same width between post 53 and the casing 1 inner wall, can scrape out the film of required thickness with the feed liquid on the lateral wall through scraping post 53, can scrape the size of post 53 according to required film thickness change simultaneously. The outer side wall of the scraping column 53 is an arc surface, so that the friction force between the inner side wall of the shell 1 and the side wall of the scraping column 53 can be reduced, the abrasion of the scraping column 53 is reduced, the phenomenon that the scraping column 53 is abraded and then broken powder pollutes materials is avoided, and the stability of material evaporation is improved.

As shown in fig. 4, the scraping column 53 includes a fixed shaft 11 and a scraping cylinder 12, the scraping cylinder 12 is sleeved on the fixed shaft 11, the scraping cylinder 12 rotates around the fixed shaft 11, and the end of the fixed shaft 11 is fixedly connected with the connecting rod 52. The end of scraping a section of thick bamboo 12 outer keeping away from casing 1 inner wall is provided with limiting plate 13, and limiting plate 13 is fixed meeting and is parallel with fixed axle 11 axial with fixed axle 11, avoids limiting plate 13 and casing 1 collision damage casing 1, and there is the certain distance between limiting plate 13 and the 12 outer surfaces of scraping a section of thick bamboo, and the material of adhesion on scraping a section of thick bamboo 12 can be detached to limiting plate 13. By arranging the limiting plate 13, the high-viscosity material is prevented from being attached to the surface of the scraping cylinder 12 to damage the film forming.

Preferably, scrape a section of thick bamboo 12 and include a plurality of rotation portion, be convenient for change the rotation portion of damage, reduce the maintenance cost, the upper and lower terminal surface ability of the axial direction rotation portion along rotation portion laminates mutually rather than the terminal surface of adjacent rotation portion and avoids the material to get into rotation portion terminal surface and hinder rotation portion rotation. The number of the rotating parts can be set according to actual conditions, and the rotating parts can rotate around the fixed shaft 11. The rotating part is a cylinder, and abrasion of the rotating part is reduced.

The rotation of the side wall of the wiping column 53 relative to the side wall of the housing 1 reduces wear and material contamination of the wiping column 53 by friction. The scraping cylinder 12 rotates by taking the fixed shaft 11 as an axis, the motion posture of the scraping cylinder 12 is stable, the distance between the scraping column 53 and the shell 1 is ensured, and the stability of film forming is enhanced.

The utility model discloses a connecting rod that meets can be dismantled in the setting, and convenient to detach changes and scrapes a section of thick bamboo, and adjustment film thickness in convenient production, material evaporation are stable, are heated evenly, and the evaporation effect is better, can extensively be applicable to the place that each needs film evaporator.

The above embodiments are not intended to limit the present invention, and the present invention is not limited to the above examples, and the technical personnel in the technical field are in the present invention, which can also belong to the protection scope of the present invention.

Claims

1. A thin film evaporator, comprising a shell (1), characterized in that: the shell (1) comprises an exhaust tank (2), an evaporation tank (3), and a lower end connected to the evaporation tank (3) A lower head (6), an exhaust tank (2) is connected to the upper end of the evaporation tank (3), and an exhaust hole (21) is opened above the outer side wall of the exhaust tank (2), and a lower part of the inner cavity is provided with an exhaust hole (21). A material inlet (23) is provided, and an exhaust fan (22) is arranged in the exhaust hole (21);

A main shaft (5) is vertically arranged inside the casing (1), one end of the main shaft (5) is rotatably connected to the lower head (6), and the other end is rotatably connected to the exhaust tank (2). Passing through the exhaust tank (2), a motor (4) is arranged above the exhaust tank (2), the output shaft of the motor (4) is connected with the top of the main shaft (5), and the main shaft (5) A distributor (8) and a gas-liquid separator (9) are respectively installed on the upper part, and the distributor (8) and the gas-liquid separator (9) are all located in the exhaust tank (2);

A plurality of fixing rings (51) are sleeved on the main shaft (5) at intervals from top to bottom, and a plurality of connecting rods (52) are evenly arranged on the outer circumferential surface of the fixing ring (51). (52) are respectively connected to the fixing ring (51) detachably, a plurality of the connecting rods (52) are arranged in a cross, and the end of the connecting rod (52) away from the fixing ring (51) is provided with a scraper (53), so The outer side wall of the scraper column (53) rotates relative to the inner side wall of the housing (1).

2. The thin-film evaporator according to claim 1, wherein the evaporation tank (3) comprises an upper tank (31) and a lower tank (32), the upper tank (31) and the lower tank The body (32) is covered with a heating jacket (7), and the heating jacket (7) is provided with a steam inlet (71) and a condensed water outlet (72).

3. The thin film evaporator according to claim 2, characterized in that: the position of the gas-liquid separator (9) is higher than the distributor (8) but lower than the exhaust hole (21), and the distributor ( 8) is located below the material inlet (23).

4. The thin-film evaporator according to claim 3, characterized in that: the scraping column (53) comprises a fixed shaft (11) and a scraping cylinder (12), and the scraping cylinder (12) is sleeved on the fixed shaft (12). 11), the scraping cylinder (12) rotates around the fixed shaft (11), and the end of the fixed shaft (11) is fixedly connected with the connecting rod (52).

5. The thin-film evaporator according to claim 4, characterized in that: a limiting plate (13) is provided at one end of the scraper cylinder (12) away from the inner wall of the casing (1), and the limiting plate (13) It is fixedly connected with the fixed shaft (11) and is axially parallel to the fixed shaft (11).

6 . The thin-film evaporator according to claim 5 , wherein a material outlet ( 61 ) is provided below the lower sealing head ( 6 ). 7 .

7 . The thin-film evaporator according to claim 6 , wherein a support is provided on the top of the exhaust tank ( 2 ), and a motor ( 4 ) is matched on the support. 8 .