Film evaporator

Abstract

The utility model provides a film evaporator which comprises a film evaporator tank cover and a collecting pipe which are distributed up and down, two connecting plates are fixedly installed between the film evaporator tank cover and the collecting pipe, and an evaporation section structure is arranged between the film evaporator tank cover and the collecting pipe and located on the outer rings of the two connecting plates. By designing the structure of the evaporation section, during use, the first evaporation section shell and the second evaporation section shell are placed between a film evaporator tank cover and a collecting pipe in a mutually attached manner, and the grooves formed in the inner walls of the first evaporation section shell and the second evaporation section shell are attached to the connecting plate; and then the opposite-pull screw rod is inserted between the first fixing block and the second fixing block, and meanwhile, the locking nuts are screwed at the two ends of the opposite-pull screw rod, so that the first evaporation section shell and the second evaporation section shell are fixed, assembly and disassembly are convenient, meanwhile, the interior of the film evaporator is conveniently cleaned in the later period, and the subsequent use efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of evaporators, in particular to a thin-film evaporator. Background Technique

[0002] The scraping thin-film evaporator is equipped with a heating steam jacket outside the shell, and a rotatable scraper is installed inside it. The scraper is driven by a rotating shaft at the center of the cylinder. After the raw material liquid is added tangentially from the upper part of the evaporator, under the action of gravity and the rotating scraper, a downward rotating thin film is formed along the inner wall surface of the shell. The finished liquid is discharged outside the device from the bottom, and the secondary steam is discharged from the upper part after passing through the demister.

[0003] At present, when the scraping thin-film evaporator is in use, after the evaporation and concentration of the raw material liquid are completed, crystal impurities will appear on the inner wall of the evaporation section. However, since the evaporation section is an integral structure, it is not convenient to clean, which affects the subsequent evaporation efficiency.

[0004] Therefore, in view of the above problems, we propose a thin-film evaporator. Content of the Utility Model

[0005] The purpose of the utility model is to provide a thin-film evaporator to solve the problems raised in the above background technique.

[0006] To achieve the above purpose, the utility model provides the following technical solution: A thin-film evaporator includes a thin-film evaporator cover and a collection pipe distributed up and down. Two connecting plates are fixedly installed between the thin-film evaporator cover and the collection pipe. An evaporation section structure is arranged outside the two connecting plates between the thin-film evaporator cover and the collection pipe. Two support rods are fixedly installed on the top of the thin-film evaporator cover. A support seat is fixedly installed on the top of the support rods. A driving motor is fixedly installed on the upper surface of the support seat. A driving shaft is fixedly installed at the output end of the driving motor. A scraper is arranged on the driving shaft.

[0007] As a further description of the utility model: The evaporation section structure includes a first evaporation section outer shell and a second evaporation section outer shell symmetrically distributed left and right. A first sealing gasket is installed on the outer walls of the first evaporation section outer shell and the second evaporation section outer shell in contact with each other, and a second sealing gasket is installed on the outer walls in contact with the thin-film evaporator cover and the collection pipe. Cavities are opened inside the first evaporation section outer shell and the second evaporation section outer shell, and arc-shaped electric heating wires are installed inside the cavities. Handles are fixedly installed on the side walls of the first evaporation section outer shell and the second evaporation section outer shell away from each other.

[0008] As a further description of the utility model: First fixing blocks and second fixing blocks are respectively fixedly installed on the front and back side walls of the first evaporation section outer shell and the second evaporation section outer shell. A tension bolt is arranged between the first fixing block and the second fixing block, and locking nuts are threadedly connected to both ends of the tension bolt.

[0009] As a further description of the present utility model: The number of the scraping plates is multiple groups and are distributed up and down. At one end where multiple horizontally distributed scraping plates are close to each other, a collar is fixedly installed. The collar is fixedly sleeved on a driving shaft, and the driving shaft is rotationally connected to the cover of the thin-film evaporator tank and the support base. At the bottom end of the driving shaft, a support plate is rotationally sleeved, and both ends of the support plate are fixedly connected to a collecting pipe.

[0010] As a further description of the present utility model: A blanking pipe is fixedly installed at the bottom of the collecting pipe, and a valve is installed on the blanking pipe.

[0011] As a further description of the present utility model: Feed pipes and steam recovery pipes are respectively fixedly installed on the outer walls on both sides of the cover of the thin-film evaporator tank. A connecting flange is fixedly installed at one end of the steam recovery pipe away from the cover of the thin-film evaporator tank.

[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0013] The present utility model designs an evaporation section structure on a thin-film evaporator. During use, the outer shell of the first evaporation section and the outer shell of the second evaporation section are placed against each other between the cover of the thin-film evaporator tank and the collecting pipe, and the grooves formed on the inner walls of the outer shell of the first evaporation section and the outer shell of the second evaporation section are made to fit against the connecting plate. Then, the tensioning screw is inserted between the first fixing block and the second fixing block, and locking nuts are screwed onto both ends of the tensioning screw to fix the outer shell of the first evaporation section and the outer shell of the second evaporation section. This is convenient for loading and unloading and facilitates the subsequent cleaning of the interior of the thin-film evaporator, improving the subsequent use efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0015] Figure 2 is a schematic diagram of the internal structure of the evaporator of the present utility model;

[0016] Figure 3 is a schematic diagram of the evaporation section structure of the present utility model.

[0017] In the figure: 1, cover of the thin-film evaporator tank; 2, collecting pipe; 3, connecting plate; 4, evaporation section structure; 401, outer shell of the first evaporation section; 402, outer shell of the second evaporation section; 403, handle; 404, first fixing block; 405, second fixing block; 406, tensioning screw; 5, support rod; 6, support base; 7, driving motor; 8, driving shaft; 9, collar; 10, scraping plate; 11, support plate; 12, blanking pipe; 13, valve; 14, feed pipe; 15, steam recovery pipe; 16, connecting flange. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0019] Please refer to Figures 1 - 3 , the present utility model provides a technical solution: a thin-film evaporator, including a thin-film evaporator cover 1 and a collecting pipe 2 distributed up and down. Two connecting plates 3 are fixedly installed between the thin-film evaporator cover 1 and the collecting pipe 2. An evaporation section structure 4 is arranged outside the two connecting plates 3 between the thin-film evaporator cover 1 and the collecting pipe 2. Two support rods 5 are fixedly installed on the top of the thin-film evaporator cover 1. A support seat 6 is fixedly installed on the top of the support rod 5. A driving motor 7 is fixedly installed on the upper surface of the support seat 6. A driving shaft 8 is fixedly installed at the output end of the driving motor 7. A scraper 10 is arranged on the driving shaft 8.

[0020] In this embodiment: The evaporation section structure 4 includes a first evaporation section outer shell 401 and a second evaporation section outer shell 402 symmetrically distributed left and right. A first sealing gasket is installed on the outer walls of the first evaporation section outer shell 401 and the second evaporation section outer shell 402 in contact with each other, and a second sealing gasket is installed on the outer walls in contact with the thin-film evaporator cover 1 and the collecting pipe 2. Cavities are opened inside both the first evaporation section outer shell 401 and the second evaporation section outer shell 402, and arc-shaped electric heating wires are installed inside the cavities. Handles 403 are fixedly installed on the side walls of the first evaporation section outer shell 401 and the second evaporation section outer shell 402 away from each other.

[0021] During specific use: Grooves adapted to the connecting plates 3 are opened on the inner walls of the first evaporation section outer shell 401 and the second evaporation section outer shell 402 to determine the installation positions, and the electric heating wires can heat the raw material liquid passing through the first evaporation section outer shell 401 and the second evaporation section outer shell 402 to concentrate the raw material liquid.

[0022] In this embodiment: First fixing blocks 404 and second fixing blocks 405 are respectively fixedly installed on the front and back side walls of the first evaporation section outer shell 401 and the second evaporation section outer shell 402. A tension bolt 406 is arranged between the first fixing block 404 and the second fixing block 405, and locking nuts are threadedly connected to both ends of the tension bolt 406.

[0023] During specific use: The tension rod 406 can be inserted between the first fixing block 404 and the second fixing block 405, and the first fixing block 404 and the second fixing block 405 are fixed by a locking nut, which facilitates the loading and unloading of the first evaporation section housing 401 and the second evaporation section housing 402, and is convenient for cleaning the inside of the thin film evaporator later.

[0024] In this embodiment: The number of the scraping plates 10 is multiple groups and is distributed up and down. A collar 9 is fixedly installed at one end of the multiple horizontally distributed scraping plates 10 close to each other. The collar 9 is fixedly sleeved on the driving shaft 8. The driving shaft 8 is rotationally connected to the thin film evaporator cover 1 and the support base 6. A support plate 11 is rotationally sleeved at the bottom end of the driving shaft 8. Both ends of the support plate 11 are fixedly connected to the collection pipe 2.

[0025] During specific use: After the driving motor 7 is started, the driving shaft 8 can drive the collar 9 and the scraping plates 10 to rotate inside the thin film evaporator, so that the raw material liquid forms a downward rotating thin film along the inner wall surface of the thin film evaporator under the action of gravity and the scraping plates 10.

[0026] In this embodiment: A discharge pipe 12 is fixedly installed at the bottom of the collection pipe 2, and a valve 13 is installed on the discharge pipe 12.

[0027] During specific use: The discharge pipe 12 and the valve 13 can collect the raw material liquid after evaporation and concentration.

[0028] In this embodiment: Feed pipes 14 and steam recovery pipes 15 are respectively fixedly installed on the outer walls on both sides of the thin film evaporator cover 1. A connecting flange 16 is fixedly installed at one end of the steam recovery pipe 15 away from the thin film evaporator cover 1.

[0029] During specific use: The feed pipe 14 can inject the preheated raw material liquid into the thin film evaporator, the steam recovery pipe 15 can recover the steam during the evaporation process of the raw material liquid, and the connecting flange 16 can connect the steam recovery pipe 15 to an external condenser.

[0030] Working principle: During use, the first evaporation section housing 401 and the second evaporation section housing 402 are placed against each other between the thin film evaporator cover 1 and the collection pipe 2, and the grooves formed on the inner walls of the first evaporation section housing 401 and the second evaporation section housing 402 are made to fit with the connecting plate 3. Then, the tension rod 406 is inserted between the first fixing block 404 and the second fixing block 405, and at the same time, locking nuts are screwed onto both ends of the tension rod 406 to fix the first evaporation section housing 401 and the second evaporation section housing 402. This not only facilitates loading and unloading but also is convenient for cleaning the inside of the thin film evaporator later, improving the subsequent use efficiency.

[0031] The content not described in detail in this specification belongs to the prior art well-known to those skilled in the art. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A thin film evaporator, comprising a thin film evaporator tank cover (1) and a collecting pipe (2) arranged up and down, characterized in that: Two connecting plates (3) are fixedly installed between the thin film evaporator tank cover (1) and the collecting tube (2); an evaporation section structure (4) is arranged between the thin film evaporator tank cover (1) and the collecting tube (2) at the outer rings of the two connecting plates (3); two support rods (5) are fixedly installed on the top of the thin film evaporator tank cover (1); a support seat (6) is fixedly installed on the top of the support rod (5); a drive motor (7) is fixedly installed on the upper surface of the support seat (6); a drive shaft (8) is fixedly installed on the output end of the drive motor (7); and a scraper (10) is arranged on the drive shaft (8).

2. A thin film evaporator according to claim 1, characterized in that: The evaporation section structure (4) comprises a first evaporation section shell (401) and a second evaporation section shell (402) which are symmetrically distributed on the left and right sides; a first sealing gasket is installed on the outer wall of the first evaporation section shell (401) and the second evaporation section shell (402) which are in contact with each other, and a second sealing gasket is installed on the outer wall which is in contact with the thin film evaporator tank cover (1) and the collecting tube (2); a cavity is provided inside the first evaporation section shell (401) and the second evaporation section shell (402), and an arc-shaped electric heating wire is installed inside the cavity; and a handle (403) is fixedly installed on the side walls of the first evaporation section shell (401) and the second evaporation section shell (402) which are away from each other.

3. A thin film evaporator according to claim 2, characterized in that: A first fixing block (404) and a second fixing block (405) are fixedly installed on the front and back side walls of the first evaporation section shell (401) and the second evaporation section shell (402), respectively; a tension screw (406) is arranged between the first fixing block (404) and the second fixing block (405), and locking nuts are threadedly connected at both ends of the tension screw (406).

4. A thin film evaporator according to claim 1, characterized in that: The scrapers (10) are arranged in groups and distributed vertically. A sleeve (9) is fixedly mounted on one end of the scrapers (10) that are distributed horizontally and close to each other. The sleeve (9) is fixedly sleeved on a driving shaft (8). The driving shaft (8) is rotatably connected to a thin film evaporator tank cover (1) and a support seat (6). A support plate (11) is rotatably sleeved on the bottom end of the driving shaft (8). Both ends of the support plate (11) are fixedly connected to the collecting pipe (2).

5. The thin film evaporator according to claim 1, characterized in that: A feed pipe (12) is fixedly mounted at the bottom of the collecting pipe (2), and a valve (13) is mounted on the feed pipe (12).

6. A thin film evaporator according to claim 1, characterized in that: A feed pipe (14) and a steam recovery pipe (15) are respectively fixedly mounted on the outer walls of both sides of the thin film evaporator tank cover (1), and a connecting flange (16) is fixedly mounted on one end of the steam recovery pipe (15) away from the thin film evaporator tank cover (1).

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