Film evaporator

Abstract

The utility model relates to the technical field of evaporators, and discloses a film evaporator which comprises a heating barrel, a barrel cover is arranged above the heating barrel, an inner barrel is arranged in the heating barrel, a rotating shaft is vertically installed in the middle of the inner barrel, and an L-shaped material distribution baffle is installed on the peripheral side of the rotating shaft. Due to the fact that the L-shaped material distribution blocking plate is in an L shape, when materials fall into the inner cylinder along with the feeding pipe, in the rotating process of the inner cylinder, the falling materials are scattered by the L-shaped material distribution blocking plate, and the materials are thrown out of a discharging opening formed in the other end of the L-shaped material distribution blocking plate through centrifugal force generated when the materials rotate along with the inner cylinder, so that the materials are thrown to the inner wall of the heating barrel. Due to the fact that the multiple layers of L-shaped material distributing baffle plates are arranged, leaked materials on each upper layer can be received again in the lower layer and thrown out along with centrifugal force, the materials are evenly distributed on the inner wall of the heating barrel, and the situation that a large amount of material liquid is gathered at the end portion of the upper end, making contact with the materials first, of a traditional scraping plate is avoided.

Description

Technical Field

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

[0002] Thin film evaporators are widely used in the fields of chemical industry, medicine, etc. The principle is that the liquid enters the evaporator tangentially, and is forced to form a film on the wall of the evaporator under the action of the scraper. The film-forming material flows downward under the action of gravity and centrifugal force, and is heated by the steam in the jacket outside the cylinder to evaporate and concentrate. The evaporation process has a high heat transfer coefficient and a short liquid flow time, so it is particularly suitable for the evaporation and concentration of high-viscosity and heat-sensitive materials.

[0003] When a conventional thin film evaporator is working, the material is put into the evaporator. Since the material enters from top to bottom, when the scraper presses the material on the inner wall of the barrel, more liquid material will gather at the upper end where the scraper first contacts the material. This part of the liquid material is thicker and evaporates more slowly. Therefore, those skilled in the art provide a thin film evaporator to solve the problems raised in the above background technology. Utility Model Content

[0004] 1. Technical issues to be solved

[0005] In view of the shortcomings of the prior art, the utility model provides a thin film evaporator to solve the problem that when the material is processed in the evaporator, because the material enters from top to bottom and the scraper presses the material on the inner wall of the barrel, more liquid will accumulate at the upper end where the scraper first contacts the material, and this part of the liquid is thicker, so the evaporation speed is relatively slow.

[0006] (II) Technical solution

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a thin film evaporator, comprising a heating barrel, a barrel cover is arranged above the heating barrel, an inner barrel is arranged in the heating barrel, a rotating shaft is vertically installed in the middle of the inner barrel, a spline groove is arranged at the upper end of the rotating shaft, an L-shaped material distribution baffle is installed on the circumference of the rotating shaft, the L-shaped material distribution baffle is arranged in multiple layers, a discharge port is arranged at one end of the L-shaped material distribution baffle in contact with the inner wall of the inner barrel, a fixing sleeve is installed on the outer wall of the inner barrel, a sliding sleeve is arranged above the fixing sleeve, and the outer wall of the inner barrel is provided with a fixed sleeve. A slide groove is provided on the wall, and a rolling roller is provided between the fixed sleeve and the sliding sleeve. When the feed pipe feeds the material, the material falls into the inner cylinder along with the feed pipe. When the inner cylinder rotates, the L-shaped material dividing baffle plate breaks up the fallen material and the centrifugal force generated by the rotation of the inner cylinder throws the material out from the discharge port provided at the other end of the L-shaped material dividing baffle plate, so that the material is thrown onto the inner wall of the heating barrel. Since the L-shaped material dividing baffle plate is provided with multiple layers, the leaked material in each layer will be received again in the lower layer and thrown out with the centrifugal force, so that the material is evenly distributed on the inner wall of the heating barrel.

[0008] Preferably, a feed pipe is installed on one side of the barrel cover, and a steam exhaust pipe is installed on the other side of the barrel cover.

[0009] Preferably, the lower end of the rolling roller is rotatably connected to the fixed sleeve, the upper end of the rolling roller is rotatably connected to the sliding sleeve, and the sliding sleeve is slidably engaged with the sliding groove. Therefore, the rolling roller can be taken out for replacement after the sliding sleeve is pushed upward, which is convenient for later replacement and cleaning.

[0010] Preferably, a motor is fixedly installed on the top of the barrel cover, and the lower output end of the motor is driven and connected to a spline shaft, and the spline shaft is positioned and plugged with the rotating shaft through a spline groove. When the barrel cover and the heating barrel are closed, the spline shaft driven and connected at the lower end of the motor is plugged with the spline groove on the rotating shaft, so that the motor can drive the rotating shaft to rotate through the spline shaft, and the rotation of the rotating shaft drives the inner cylinder to rotate.

[0011] Preferably, the bottom end of the rotating shaft passes through the inner cylinder, a positioning seat is installed at the bottom end of the heating barrel, and the inner cylinder is rotatably plugged with the positioning seat through the rotating shaft, so as to position the inner cylinder and enable the inner cylinder to rotate.

[0012] (III) Beneficial effects

[0013] Compared with the prior art, the utility model provides a thin film evaporator with the following beneficial effects:

[0014] The L-shaped material dividing baffle plate is designed to be provided with multiple layers inside the inner cylinder, and each layer of the L-shaped material dividing baffle plate is composed of multiple pieces, and the ends are radially arranged with the rotating shaft as the center. Since the L-shaped material dividing baffle plate is L-shaped, when the feed pipe feeds the material, the material falls into the inner cylinder along with the feed pipe, and during the rotation of the inner cylinder, the L-shaped material dividing baffle plate breaks up the fallen material and throws the material out from the discharge port opened at the other end of the L-shaped material dividing baffle plate with the centrifugal force generated when the inner cylinder rotates, so that the material is thrown onto the inner wall of the heating barrel. Since the L-shaped material dividing baffle plate is provided with multiple layers, the leaked material in each layer will be received again in the lower layer and thrown out with the centrifugal force, so that the material is evenly distributed on the inner wall of the heating barrel, and when the inner cylinder rotates, the rolling roller rolls and flattens the material on the inner wall of the heating barrel along with the rotation of the inner cylinder, so that the evenly thrown out material is evenly pressed again, avoiding the situation where a lot of liquid accumulates at the upper end where the traditional scraper first contacts the material. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the three-dimensional structure of a thin film evaporator provided in an embodiment of the present application.

[0016] Figure 2 It is a schematic structural diagram of a barrel cover in a thin film evaporator provided in an embodiment of the present application.

[0017] Figure 3 It is a schematic diagram of the structure of an inner cylinder in a thin film evaporator provided in an embodiment of the present application.

[0018] Figure 4 It is a structural cross-sectional view of a heating barrel in a thin film evaporator provided in an embodiment of the present application.

[0019] Figure 5 It is a structural schematic diagram of a spline groove in a thin film evaporator provided in an embodiment of the present application.

[0020] Figure 6 It is a schematic diagram of the structure of a rotating shaft in a thin film evaporator provided in an embodiment of the present application.

[0021] Figure 7 It is a structural schematic diagram of an L-shaped material distribution baffle in a thin film evaporator provided in an embodiment of the present application.

[0022] In the figure: 1. Heating barrel; 2. Barrel cover; 3. Feed pipe; 4. Steam exhaust pipe; 5. Motor; 6. Spline shaft; 7. Positioning seat; 8. Inner barrel; 9. Rotating shaft; 10. Spline groove; 11. L-shaped material dividing baffle; 12. Discharge port; 13. Fixed sleeve; 14. Slide groove; 15. Slide sleeve; 16. Rolling roller. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] The utility model provides a technical solution, a thin film evaporator, please refer to Figures 1 to 7The heating barrel 1 comprises a barrel cover 2, a feed pipe 3 is installed on one side of the barrel cover 2, a steam exhaust pipe 4 is installed on the other side of the barrel cover 2, an inner barrel 8 is installed in the heating barrel 1, a rotating shaft 9 is vertically installed in the middle of the inner barrel 8, a spline groove 10 is provided on the upper end of the rotating shaft 9, an L-shaped material distribution baffle 11 is installed on the circumference of the rotating shaft 9, the L-shaped material distribution baffle 11 is provided with multiple layers, a discharge port 12 is provided on the end of the L-shaped material distribution baffle 11 that contacts the inner wall of the inner barrel 8, a fixing sleeve 13 is installed on the outer wall of the inner barrel 8, a sliding sleeve 15 is provided above the fixing sleeve 13, and the A slide groove 14 is provided on the outer wall of the inner cylinder 8, and a rolling roller 16 is provided between the fixed sleeve 13 and the sliding sleeve 15. After the feed pipe 3 feeds the material, the material falls into the inner cylinder 8 along with the feed pipe 3. During the rotation of the inner cylinder 8, the L-shaped material dividing baffle 11 breaks up the fallen material and the centrifugal force generated by the rotation of the inner cylinder 8 throws the material out from the discharge port 12 provided at the other end of the L-shaped material dividing baffle 11, so that the material is thrown onto the inner wall of the heating barrel 1. Since the L-shaped material dividing baffle 11 is provided with multiple layers, the leaked material in each upper layer will be received again in the lower layer and thrown out with the centrifugal force, so that the material is evenly distributed on the inner wall of the heating barrel 1.

[0025] The lower end of the rolling roller 16 is rotatably connected with the fixed sleeve 13, and the upper end of the rolling roller 16 is rotatably connected with the sliding sleeve 15. The sliding sleeve 15 is slidably connected with the sliding groove 14. Therefore, the rolling roller 16 can be taken out for replacement after the sliding sleeve 15 is pushed upward, which is convenient for later replacement and cleaning. The top of the barrel cover 2 is fixedly installed with a motor 5, and the lower output end of the motor 5 is driven and connected with a spline shaft 6. The spline shaft 6 is positioned and connected with the rotating shaft 9 through the spline groove 10. When the barrel cover 2 and the heating barrel 1 are closed, the spline shaft 6 connected to the lower end of the motor 5 is driven and connected. The shaft 6 is plugged into the spline groove 10 on the rotating shaft 9, so that the motor 5 can drive the rotating shaft 9 to rotate through the spline shaft 6, and the rotation of the rotating shaft 9 drives the inner cylinder 8 to rotate. The bottom end of the rotating shaft 9 passes through the inner cylinder 8, and a positioning seat 7 is installed at the bottom end of the heating barrel 1. The inner cylinder 8 is rotatably plugged with the positioning seat 7 through the rotating shaft 9, so as to position the inner cylinder 8 and enable the inner cylinder 8 to rotate. When the inner cylinder 8 rotates, the rolling roller 16 rolls and flattens the material on the inner wall of the heating barrel 1 as the inner cylinder 8 rotates, so that the material that is evenly thrown out is evenly pressed again.

[0026] The thin film evaporator in the utility model is composed of a heating barrel 1, a barrel cover 2 and an inner barrel 8. A positioning seat 7 is installed at the bottom of the heating barrel 1. The bottom end of the rotating shaft 9 in the inner barrel 8 is rotatably plugged with the positioning seat 7. A spline groove 10 is opened at the upper end of the rotating shaft 9. When the barrel cover 2 and the heating barrel 1 are closed, the spline shaft 6 driven by the lower end of the motor 5 is plugged with the spline groove 10 on the rotating shaft 9, so that the motor 5 can drive the rotating shaft 9 to rotate through the spline shaft 6, and the rotation of the rotating shaft 9 drives the inner barrel 8 to rotate;

[0027] A plurality of L-shaped material dividing baffles 11 are arranged inside the inner cylinder 8, and each layer of the L-shaped material dividing baffles 11 is composed of a plurality of pieces, and the ends are radially arranged with the rotating shaft 9 as the center. Since the L-shaped material dividing baffles 11 are L-shaped, when the feeding pipe 3 feeds the material, the material falls into the inner cylinder 8 along with the feeding pipe 3. During the rotation of the inner cylinder 8, the L-shaped material dividing baffles 11 scatter the fallen material and the centrifugal force generated by the rotation of the inner cylinder 8 throws the material out from the discharge port 12 opened at the other end of the L-shaped material dividing baffles 11, so that the material is thrown onto the inner wall of the heating barrel 1. Since the L-shaped material dividing baffles 11 are arranged with a plurality of layers, the leaked material in each upper layer will be received again in the lower layer and thrown out with the centrifugal force, so that the material is evenly distributed on the inner wall of the heating barrel 1;

[0028] A fixed sleeve 13 is installed at the lower end of the outer wall of the inner cylinder 8, a slide groove 14 is opened at the upper end of the outer wall of the inner cylinder 8, a slide sleeve 15 is arranged in the slide groove 14, and a rolling roller 16 is arranged between the fixed sleeve 13 and the slide sleeve 15. Since the slide sleeve 15 can slide up and down in the slide groove 14, the rolling roller 16 can be taken out for replacement after the slide sleeve 15 is pushed upward, which is convenient for later replacement and cleaning;

[0029] When the inner cylinder 8 rotates, the rolling roller 16 rolls and flattens the material on the inner wall of the heating barrel 1 along with the rotation of the inner cylinder 8, so that the material that is evenly thrown out can be evenly pressed again.

[0030] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0031] In this document, unless otherwise clearly stipulated and limited, terms such as "installation", "setting", "connection", "fixation", and "screw-on" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in this utility model according to the specific circumstances.

[0032] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A thin film evaporator, comprising a heating barrel (1), characterized in that: A barrel cover (2) is arranged above the heating barrel (1), an inner barrel (8) is arranged inside the heating barrel (1), a rotating shaft (9) is vertically installed in the middle of the inner barrel (8), a spline groove (10) is provided at the upper end of the rotating shaft (9), an L-shaped material distribution baffle (11) is installed on the circumference of the rotating shaft (9), the L-shaped material distribution baffle (11) is provided with multiple layers, a discharge port (12) is provided at one end of the L-shaped material distribution baffle (11) that contacts the inner wall of the inner barrel (8), a fixed sleeve (13) is installed on the outer wall of the inner barrel (8), a sliding sleeve (15) is arranged above the fixed sleeve (13), a sliding groove (14) is provided on the outer wall of the inner barrel (8), and a rolling roller (16) is provided between the fixed sleeve (13) and the sliding sleeve (15).

2. A thin film evaporator according to claim 1, characterized in that: The lower end of the rolling roller (16) is rotatably plugged into the fixed sleeve (13), the upper end of the rolling roller (16) is rotatably plugged into the sliding sleeve (15), and the sliding sleeve (15) is slidably plugged into the sliding groove (14).

3. A thin film evaporator according to claim 1, characterized in that: The bottom end of the rotating shaft (9) passes through the inner cylinder (8); a positioning seat (7) is installed at the bottom end of the heating barrel (1); and the inner cylinder (8) is rotatably plugged into the positioning seat (7) via the rotating shaft (9).

4. A thin film evaporator according to claim 1, characterized in that: A feed pipe (3) is installed on one side of the barrel cover (2), and a steam exhaust pipe (4) is installed on the other side of the barrel cover (2).

5. A thin film evaporator according to claim 1, characterized in that: A motor (5) is fixedly mounted on the top of the barrel cover (2); a spline shaft (6) is drivingly connected to the lower output end of the motor (5); and the spline shaft (6) is positioned and plugged with the rotating shaft (9) through a spline groove (10).

Images