CN216136702U

CN216136702U - Falling film evaporator

Info

Publication number: CN216136702U
Application number: CN202023262236.2U
Authority: CN
Inventors: 章魁文; 黄自校; 贺其锦; 徐莹; 周宝青; 刘时荣; 章旦
Original assignee: WENZHOU CHINZ MACHINERY CO LTD
Current assignee: WENZHOU CHINZ MACHINERY CO LTD
Priority date: 2020-12-30
Filing date: 2020-12-30
Publication date: 2022-03-29
Anticipated expiration: 2030-12-30

Abstract

The utility model discloses a falling film evaporator which comprises a tank body, wherein the upper end of the tank body is provided with a feeding pipe, the lower end of the tank body is provided with a discharging pipe, one side of the tank body is provided with a steam inlet pipe, the other side of the tank body is provided with a steam outlet pipe, the tank body is provided with a motor, a rotating shaft of the motor is connected with a stirring shaft inserted into the tank body, the circumference of the stirring shaft is equally divided into a plurality of scraping plates, and the falling film evaporator is characterized in that: the stirring shaft upper portion is equipped with the liquid dispersion dish, the liquid dispersion dish cross section personally submits the round platform shape, and evenly distributed has a plurality of liquid dispersion through-holes on the side of liquid dispersion dish, the export of inlet pipe aims at liquid dispersion dish one side, the motor can reciprocate on the jar body. The falling film evaporator provided by the utility model has the advantages of higher evaporation speed, higher evaporation efficiency, longer contact time of the feed liquid and steam and self-cleaning function.

Description

Falling film evaporator

Technical Field

The utility model relates to the field of chemical equipment, in particular to a falling film evaporator.

Background

At present, the falling-film evaporator provided in the market comprises a tank body, a feed pipe is arranged at the upper end of the tank body, a discharge pipe is arranged at the lower end of the tank body, a steam inlet pipe is arranged at one side of the tank body, a steam outlet pipe is arranged at the other side of the tank body, a motor is arranged on the tank body, a rotating shaft of the motor is connected with a stirring shaft inserted into the tank body, a plurality of scraping plates are equally distributed on the circumference of the stirring shaft, when in use, feed liquid enters the inner wall of the tank body from the feed pipe, the motor drives the stirring shaft and the scraping plates to enable the feed liquid to form a film on the inner wall of the tank body, however, the feed liquid needs to be slowly put into the inner wall of the tank body in the actual use process of the falling-film evaporator, the evaporation speed and the evaporation efficiency are low, the contact time of the feed liquid and the steam is short, the utilization rate of the steam is low, in addition, the falling-film evaporator is easy to deposit and solidify the feed liquid on the inner wall of the upper end of the scraping plates in the long-film evaporator, once the falling-film evaporator is too much, the feed liquid can directly flow into the tank body through the deposition part, the scraper also loses the effect, consequently need often wash the normal use that just can guarantee the scraper to jar internal wall, consuming time and wasting power.

Disclosure of Invention

In view of the defects of the background art, the utility model aims to provide the falling film evaporator which has the advantages of higher evaporation speed, higher evaporation efficiency, longer contact time of feed liquid and steam and self-cleaning function.

Therefore, the utility model is realized by adopting the following technical scheme:

falling film evaporation ware, including a jar body, jar body upper end is equipped with inlet pipe, lower extreme and is equipped with the discharging pipe, and one side is equipped with steam and advances pipe, opposite side and is equipped with the steam exit tube, jar be equipped with the motor on the body, be connected with in the pivot of motor and insert jar internal (mixing) shaft, circumference equipartition has a plurality of scraper blades, characterized by on the (mixing) shaft: the stirring shaft upper portion is equipped with the liquid dispersion dish, the liquid dispersion dish cross section personally submits the round platform shape, and evenly distributed has a plurality of liquid dispersion through-holes on the side of liquid dispersion dish, the export of inlet pipe aims at liquid dispersion dish one side, the motor can reciprocate on the jar body.

Further, the bottom surface of the liquid dispersion plate is provided with a plurality of liquid discharge pipes which incline outwards, the upper ends of the liquid discharge pipes are communicated with the liquid dispersion plate, one side of the lower end of the liquid discharge pipes is hinged with a sealing cover through a hinged shaft, the hinged shaft is sleeved with a torsional spring which enables the sealing cover to move upwards, and one end of the torsional spring is supported on the liquid discharge pipes, and the other end of the torsional spring is supported on the lower end face of the sealing cover.

Further, a support is arranged on two sides of the tank body, a servo motor is arranged on the support, a cam is arranged on a rotating shaft of the servo motor, supports aligned with the upper ends of the cams are arranged on two sides of the motor, and a roller capable of being supported on an outer ring of the cam is movably arranged at the lower ends of the supports.

Furthermore, a ball sliding bearing for accommodating the stirring shaft is arranged on the tank body.

After the technical scheme is adopted, the upper part of the stirring shaft is provided with the liquid dispersion disc, the liquid enters the tank body and firstly reaches the liquid dispersion disc, the liquid dispersion disc is driven by the motor to throw the liquid onto the inner wall of the tank body (the liquid is thrown out through the outer ring at the upper end of the liquid dispersion disc and/or the liquid dispersion through hole), if the liquid is deposited on the liquid dispersion disc, the sealing cover on the liquid discharge pipe can be automatically opened by the gravity of the deposited liquid to throw the deposited liquid onto the inner wall of the tank body, the liquid is reserved to the position of the scraper on the inner wall and then scraped into a film on the inner wall of the tank body by the scraper, the structure can accept faster feeding speed, further improve the evaporation efficiency, greatly increase the contact time of the liquid and the steam in the process, improve the evaporation efficiency and more fully utilize the steam, in addition, the rotation speed of the cam can be adjusted by synchronously adjusting the two servo motors, the cam rotates to drive the roller, the motor, the stirring shaft and the scraper to move up and down, the material liquid can be removed through the sedimentation and solidification of the material liquid on the inner wall of the tank body at the upper end of the scraper blade in the long-term use of the equipment, the self-cleaning function is realized, the phenomenon that the scraper blade loses effect is avoided, and the cost and the time for cleaning the inner wall of the tank body are saved.

Drawings

The utility model has the following drawings:

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of a partial dispensing tray according to the present invention;

fig. 3 is a schematic structural diagram of a bracket, a servo motor, a cam, a roller and a support in the utility model.

Reference numerals: 1. a tank body; 2. a feed pipe; 3. a discharge pipe; 4. a steam inlet pipe; 5. a vapor outlet pipe; 6. a motor; 7. a stirring shaft; 8. a squeegee; 9. a liquid dispersion tray; 10. a liquid dispersion through hole; 11. a liquid discharge pipe; 12. sealing the cover; 13. a torsion spring; 14. a support; 15. a servo motor; 16. a cam; 17. a support; 18. a roller; 19. a ball sliding bearing.

Detailed Description

Referring to the attached drawings, the falling film evaporator provided by the utility model comprises a tank body 1, wherein the upper end of the tank body 1 is provided with a feeding pipe 2, the lower end of the tank body is provided with a discharging pipe 3, one side of the tank body is provided with a steam inlet pipe 4, the other side of the tank body is provided with a steam outlet pipe 5, the tank body 1 is provided with a motor 6, a rotating shaft of the motor 6 is connected with a stirring shaft 7 inserted into the tank body 1, the circumference of the stirring shaft 7 is equally divided into a plurality of scraping plates 8, and the falling film evaporator is characterized in that: the upper part of the stirring shaft 7 is provided with a liquid dispersion disc 9, the cross section of the liquid dispersion disc 9 is in a round table shape, a plurality of liquid dispersion through holes 10 are uniformly distributed on the side surface of the liquid dispersion disc 9, the outlet of the feeding pipe 2 is aligned with one side of the liquid dispersion disc 9, the motor 6 can move up and down on the tank body 1, the bottom surface of the liquid dispersion disc 9 is provided with a plurality of liquid discharge pipes 11 which incline outwards, the upper end of each liquid discharge pipe 11 is communicated with the liquid dispersion disc 9, one side of the lower end of each liquid discharge pipe 11 is hinged with a sealing cover 12 through a hinged shaft, the hinged shaft is sleeved with a torsional spring 13 which can promote the sealing cover 12 to move upwards, one end of each torsional spring 13 is propped against the upper end face of each liquid discharge pipe 11, the other end of each torsional spring is propped against the lower end face of the sealing cover 12, two sides of the tank body 1 are provided with brackets 14, each bracket 14 is provided with a servo motor 15, a rotating shaft of each servo motor 15 is provided with a cam 16, two sides of each motor 6 are provided with supporting seats 17 which are aligned with cams 16, the lower ends of the upper ends of the supporting seats 17 are movably provided with rollers 18 which can be propped against the outer rings of the cam 16, and a ball sliding bearing 19 for accommodating the movement of the stirring shaft 7 is arranged on the tank body 1.

In this embodiment, the upper portion of the stirring shaft 7 is provided with a dispersion plate 9, the feed liquid enters the tank 1 and first reaches the dispersion plate 9, the dispersion plate 9 is driven by the motor 6 to rotate to throw the feed liquid onto the inner wall of the tank 1 (the feed liquid is thrown out through the outer ring of the upper end of the dispersion plate 9 and/or the dispersion through hole 10), if the feed liquid is deposited on the dispersion plate 9, the sealing cover 12 on the drain pipe 11 is automatically opened by the gravity of the deposited feed liquid to throw the deposited feed liquid onto the inner wall of the tank 1, the feed liquid is scraped to the position of the scraping plate 8 on the inner wall and then scraped into a film on the inner wall of the tank 1 by the scraping plate 8, the structure can accept a faster feeding speed, thereby improving the evaporation efficiency, the contact time between the feed liquid and the steam in the process is greatly increased, the evaporation efficiency is higher and the steam utilization rate is more sufficient, in addition, the rotation speed of the cam 16 can be adjusted by synchronously adjusting the two servo motors 15, the cam 16 rotates to drive the roller 18, the motor 6, the stirring shaft 7 and the scraper 8 to move up and down, so that the deposited and solidified material liquid of the material liquid on the inner wall of the tank body 1 at the upper end of the scraper 8 in long-term use of the equipment can be removed, the self-cleaning function is realized, the scraper 8 is prevented from losing effect, and the cost and the time for cleaning the inner wall of the tank body 1 are saved.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the utility model.

Claims

1. Falling film evaporation ware, including a jar body, jar body upper end is equipped with inlet pipe, lower extreme and is equipped with the discharging pipe, and one side is equipped with steam and advances pipe, opposite side and is equipped with the steam exit tube, jar be equipped with the motor on the body, be connected with in the pivot of motor and insert jar internal (mixing) shaft, circumference equipartition has a plurality of scraper blades, characterized by on the (mixing) shaft: the stirring shaft upper portion is equipped with the liquid dispersion dish, the liquid dispersion dish cross section personally submits the round platform shape, and evenly distributed has a plurality of liquid dispersion through-holes on the side of liquid dispersion dish, the export of inlet pipe aims at liquid dispersion dish one side, the motor can reciprocate on the jar body.

2. The falling film evaporator of claim 1, wherein: the utility model discloses a liquid discharging device, including scattered liquid dish, articulated be equipped with the closing cap on the articulated shaft, the scattered liquid dish bottom surface is equipped with a plurality of fluid-discharge tubes that lean out, the fluid-discharge tube upper end communicates with each other with the scattered liquid dish, lower extreme one side is articulated to be equipped with the closing cap through the articulated shaft, the cover is equipped with the torsional spring that makes the closing cap rebound on the articulated shaft, torsional spring one end is supported on the fluid-discharge tube, the other end supports under the closing cap on the terminal surface.

3. A falling film evaporator according to claim 1 or claim 2 wherein: the improved structure of the oil tank is characterized in that supports are arranged on two sides of the tank body, a servo motor is arranged on each support, a cam is arranged on a rotating shaft of each servo motor, supports aligning to the upper ends of the cams are arranged on two sides of each motor, and idler wheels capable of being abutted to outer rings of the cams are movably arranged at the lower ends of the supports.

4. A falling film evaporator according to claim 3 wherein: and the tank body is provided with a ball sliding bearing for accommodating the stirring shaft.