Scraper type film evaporation kettle

Abstract

The invention provides a scraper type film evaporation kettle which can adjust the feeding distribution speed under the condition that the rotating speed is not changed. A rotating shaft is mounted in the barrel and connected with a motor, a feed distribution plate and a scraper are mounted on the rotating shaft, the feed distribution plate is positioned above the scraper, a feed pipe is connected to the top of the barrel, a discharge port of the feed pipe faces the feed distribution plate after the feed pipe extends into the barrel, a gas outlet is formed in the upper part of the barrel, and a material outlet is formed in the bottom of the barrel. A connecting plate is further installed on the rotating shaft and located below the feeding distribution plate, a certain gap is formed between the connecting plate and the feeding distribution plate, adjusting screw rods are fixedly connected to the connecting plate, the multiple adjusting screw rods are distributed corresponding to the periphery of the feeding distribution plate, and the adjusting screw rods vertically and upwards penetrate through the feeding distribution plate and then are connected with adjusting nuts through threads; and the feeding distribution plate has elasticity.

Description

Technical Field

[0001] The invention relates to the technical field of scraper evaporation, in particular to a scraper type thin film evaporator. Background Art

[0002] Scraper-type film evaporator is often used for material concentration, evaporation and other processing. It generally includes a cylinder, a rotating shaft is installed in the cylinder, the rotating shaft is connected to the motor outside the cylinder, and the rotating shaft is driven by the motor to rotate. A feed distribution plate is provided on the upper part of the rotating shaft, and a scraper is connected to the lower part of the feed distribution plate along the axis of the rotating shaft. There is a gap between the scraper and the inner wall of the cylinder. When in use, the material falls on the feed distribution plate, and the rotating shaft drives the feed distribution plate to rotate, relying on centrifugal force to throw the material to the inner wall of the cylinder. The material flows downward along the inner wall of the cylinder, and the scraper scrapes the flowing material into a thin film. The film is heated and evaporated by the cylinder wall, and the gas is discharged from the top. The remaining material is concentrated and flows into the collection section at the bottom of the evaporator for collection. During the operation of the evaporator, the centrifugal force generated by the rotation will affect the material distribution speed. If the material distribution speed needs to be changed, it needs to be achieved by controlling the rotating shaft speed. However, the speed also affects the work of the scraper and thus affects the processing quality, so it is difficult to change the material distribution speed by controlling the speed. Summary of the invention

[0003] In order to solve the problem of how to adjust the material distribution speed according to needs, the present invention provides a scraper-type thin film evaporator, which can adjust the feed distribution speed without changing the rotation speed.

[0004] The technical solution is as follows: a scraper-type thin film evaporator, which includes a cylinder, a rotating shaft is installed in the cylinder, the rotating shaft is connected to a motor, a feed distribution plate and a scraper are installed on the rotating shaft, the feed distribution plate is located above the scraper, and a feed pipe is also connected to the top of the cylinder, and after the feed pipe is inserted into the cylinder, its discharge port is arranged toward the feed distribution plate, a gas outlet is provided at the upper part of the cylinder, and a material outlet is provided at the bottom of the cylinder, characterized in that: a connecting plate is also installed on the rotating shaft, the connecting plate is located below the feed distribution plate and there is a certain gap between the two, an adjusting screw is fixedly connected to the connecting plate, the adjusting screw has multiple adjusting screws and respectively corresponds to the peripheral distribution of the feed distribution plate, the adjusting screw vertically passes through the feed distribution plate upwards and is connected to an adjusting nut by threading, and the feed distribution plate is elastic.

[0005] It is further characterized by: The feed distribution plate is in a horizontal state when not subjected to pressure from the adjusting nut; The feed distribution plate is connected to the rotating shaft only through the inner ring; A hollow jacket is provided on the outer wall of the cylinder, a steam inlet is provided at the upper end of the jacket, a steam outlet is provided at the lower end of the jacket, a spiral partition plate is provided in the jacket, and the jacket is divided into a spiral steam channel by the partition plate; One end of the partition plate is connected to the outer wall of the cylinder, and a certain gap is left between the other end of the partition plate and the inner wall of the jacket.

[0006] After adopting such a structure, if the feed distribution speed needs to be adjusted, the inclination angle of the feed distribution plate can be changed by screwing the adjusting nut. The more inclined the feed distribution plate is, the greater the degree of influence of gravity on the material after it falls on the feed distribution plate, and the faster the feed distribution speed is. Correspondingly, the smoother the material is, the slower the feed distribution speed is. Therefore, the user can adjust the feed distribution speed as needed before using the evaporator, and the adjustment is convenient for use. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 for Figure 1 The enlarged schematic diagram at A in the middle; Figure 3 for Figure 1 Enlarged schematic diagram of point B in the middle. DETAILED DESCRIPTION

[0008] like Figure 1 The scraper-type thin film evaporator shown in the figure comprises a barrel 1, a rotating shaft 2 is installed in the barrel 1, the rotating shaft 2 is connected to a motor 3, a feed distribution plate 4 and a scraper 5 are installed on the rotating shaft 2, the feed distribution plate 4 is located above the scraper 5, a feed pipe 6 is also connected to the top of the barrel 1, and the feed pipe 6 is extended into the barrel 1, and its discharge port is arranged toward the feed distribution plate 4, a gas outlet 7 is arranged at the top of the barrel 1, and a material outlet 8 is arranged at the bottom of the barrel 1, and the feed distribution plate 4 is arranged at the bottom of the barrel 1. Figure 2 A connecting plate 9 is also installed on the rotating shaft 2. The connecting plate 9 is located below the feed distribution plate 4 and there is a certain gap between the two. An adjusting screw 10 is fixedly connected to the connecting plate 9. The adjusting screw 10 has multiple adjusting screws 10 and they are respectively distributed on the periphery of the feed distribution plate 4. The adjusting screw 10 vertically passes through the feed distribution plate 4 upwards and is connected to the adjusting nut 11 through a thread. The feed distribution plate 4 has a certain elasticity.

[0009] In this arrangement, the feed distribution plate 4 can be pressed down by screwing the adjustment nut 11 downward, so that the outer periphery of the feed distribution plate 4 can be tilted downward by relying on the elastic deformation of the feed distribution plate 4, so that during the feeding process, the material can be distributed faster. Correspondingly, if the adjustment nut 11 is screwed upward, the deformation of the feed distribution plate 4 can be reduced, so that the tilting degree is reduced, and the feeding distribution is slower. At the same time, the feed distribution plate 4 is only connected to the rotating shaft 2 through the inner ring, so that the plate can be deformed by rotating around the inner ring connection.

[0010] In addition, combined Figure 3 As shown, a hollow jacket 12 is provided on the outer wall of the cylinder 1, a steam inlet 13 is provided at the upper end of the jacket 12, a steam outlet 14 is provided at the lower end of the jacket 12, a spiral partition plate 15 is provided in the jacket 12, and the jacket 12 is divided into a spiral steam channel 16 by the partition plate 15. The cylinder wall is heated by filling the jacket with steam so that the material can evaporate. By forming a steam channel, the steam discharge speed can be slowed down compared to when no partition plate is used, so that the steam can be fully utilized.

[0011] On the basis of the above, one end of the partition plate 15 is connected to the outer wall of the cylinder 1, and a certain gap is left between the other end of the partition plate 15 and the inner wall of the jacket 12, so that most of the steam entering the steam channel moves in a spiral shape in the jacket, and a small part flows through the gap, thereby avoiding the steam from diffusing too slowly and ensuring a more uniform temperature in the jacket.

[0012] The above are only preferred specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by anyone familiar with the technology within the technical scope disclosed by the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A scraper-type thin film evaporator, comprising a barrel, a rotating shaft is installed in the barrel, the rotating shaft is connected to a motor, a feed distribution plate and a scraper are installed on the rotating shaft, the feed distribution plate is located above the scraper, a feed pipe is connected to the top of the barrel, the feed pipe is inserted into the barrel and its discharge port is arranged toward the feed distribution plate, a gas outlet is arranged at the top of the barrel, and a material outlet is arranged at the bottom of the barrel, characterized in that: A connecting plate is also installed on the rotating shaft, and the connecting plate is located below the feed distribution plate with a certain gap between the two. An adjusting screw is fixedly connected to the connecting plate. The adjusting screw has multiple adjusting screws and corresponds to the outer periphery of the feed distribution plate respectively. The adjusting screw passes through the feed distribution plate vertically upwards and is connected to an adjusting nut through a thread. The feed distribution plate is elastic.

2. The scraper type thin film evaporator according to claim 1, characterized in that: The feed distribution plate is in a horizontal state when not subjected to pressure from the adjusting nut.

3. The scraper type thin film evaporator according to claim 2, characterized in that: The feed distribution plate is connected to the rotating shaft only through the inner ring.

4. The scraper type thin film evaporator according to claim 1, characterized in that: A hollow jacket is provided on the outer wall of the cylinder, a steam inlet is provided at the upper end of the jacket, a steam outlet is provided at the lower end of the jacket, a spiral partition plate is provided in the jacket, and the jacket is divided into a spiral steam channel by the partition plate.

5. The scraper type thin film evaporator according to claim 4, characterized in that: One end of the partition plate is connected to the outer wall of the cylinder, and a certain gap is left between the other end of the partition plate and the inner wall of the jacket.

Images