Movable scraper type film evaporator

Abstract

The utility model belongs to the technical field of evaporators, and particularly relates to a movable scraper type film evaporator which comprises an evaporator barrel, a driving mechanism is arranged on the upper side of the evaporator barrel, a plurality of heating jackets are wrapped on the outer side wall of the evaporator barrel, and a rotating shaft in driving connection with the driving mechanism is mounted in the evaporator barrel through a bearing. A scraper cage frame is arranged on the rotating shaft, a sliding structure is connected to the scraper cage frame, and a scraper sliding inwards and outwards under the action of centrifugal force is arranged in the sliding structure. The sectional type scraper is arranged in the sliding groove of the track scraper groove in a sliding mode through the sliding block, the back of the track scraper groove is arranged on the scraper cage frame in a rotating mode through the hinge and the hinge shaft, the driving mechanism drives the sliding structure and the scraper to generate centrifugal force, the scraper centrifugally swings while the sliding structure rotates, and therefore the scraper of each section can rotate according to the thickness of materials. The distance between the evaporator and the barrel wall is automatically adjusted, the evaporator is pressed on the barrel wall under the action of centrifugal force, and the evaporation efficiency is improved.

Description

Technical Field

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

[0002] The scraper evaporator spreads the material thinly on the inner wall of the evaporator cylinder through the scraper, and separates the organic solvent or volatile solvent efficiently and stably through heat exchange.

[0003] The function of the scraper is to spread the material thinly on the inner wall of the cylinder. The scraper structure currently on the market is mainly an integrated rigid scraper fixed on the rotor. However, in this solution, the distance between the scraper and the cylinder wall is fixed, and the distance between the scraper and the cylinder wall cannot be adjusted, resulting in different thickness distributions of the material pressed on the inner wall of the cylinder, which limits the scope of application and leads to poor evaporation effect. Summary of the invention

[0004] To solve the problems raised in the above background technology. The utility model provides a movable scraper type thin film evaporator, the segmented scraper is slidably arranged in the slide groove of the track scraper groove through a slider, the back of the track scraper groove is arranged and rotated on the scraper cage through a hinge through a hinge shaft, the driving mechanism drives the sliding structure and the scraper to generate centrifugal force, the sliding structure rotates and the scraper is centrifugally swung, which can make each section of the scraper self-adjust the distance from the cylinder wall according to the thickness of the material, and under the action of centrifugal force, it is pressed thinner against the cylinder wall to increase the evaporation efficiency.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a movable scraper type thin film evaporator, comprising an evaporator cylinder, a driving mechanism is provided on the upper side of the evaporator cylinder, a plurality of heating jackets are wrapped on the outer wall of the evaporator cylinder, a rotating shaft connected to the driving mechanism is installed inside the evaporator cylinder through a bearing, a scraper cage is provided on the rotating shaft, a sliding structure is connected to the scraper cage, and a scraper that slides inward and outward under the action of centrifugal force is provided in the sliding structure.

[0006] As a preferred solution, the sliding structure comprises a track scraper groove, the inner wall of which is provided with a longitudinal sliding groove, and the scraper slides inward and outward on the sliding groove through a sliding block.

[0007] As a preferred solution, the sliding structure is fixed on the end of the scraper cage through a track scraper groove.

[0008] As a preferred solution, a hinge is provided on the back of the track scraper groove, a hinge shaft is provided on the end of the scraper cage, and the sliding structure is hinged to the hinge shaft through the hinge on the back of the track scraper groove.

[0009] As a preferred solution, a material inlet is provided at the upper end of the evaporator cylinder, a distributor is installed inside the evaporator cylinder at a position corresponding to the material inlet; and a material outlet is provided at the bottom of the evaporator cylinder.

[0010] As a preferred solution, the driving mechanism includes a motor and a reducer, and the motor is drivingly connected to the rotating shaft via the reducer.

[0011] As a preferred solution, the heating jacket is provided with a hot steam inlet and outlet.

[0012] As a preferred solution, an exhaust port is provided at the top of the evaporator cylinder, and a mounting lug is also provided at the upper end of the evaporator cylinder.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] The utility model discloses a segmented scraper which is slidably arranged in the slide groove of the track scraper groove through a slider; the back of the track scraper groove is arranged and rotated on the scraper cage through a hinge and a hinge shaft; a driving mechanism drives the rotating shaft to drive the scraper cage to rotate, thereby generating centrifugal force on the sliding structure and the scraper; the sliding structure rotates on the scraper cage through the hinge and the hinge shaft; the scraper slides outward from the track scraper groove and contacts closely with the inner wall of the evaporator cylinder under the centrifugal force; the sliding structure rotates and the scraper is centrifugally swung at the same time, so that each section of the scraper can self-adjust the distance from the cylinder wall according to the thickness of the material; under the action of centrifugal force, the scraper is pressed onto the cylinder wall more thinly; under the action of gravity and the rotating centrifugal scraper, the scraper is evenly distributed on the inner wall of the evaporator cylinder to form a downward rotating film; hot steam is introduced through the heating jacket so that the film is continuously evaporated and concentrated during the descent process, thereby increasing the evaporation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the utility model;

[0016] Figure 2 This is a front view structural schematic diagram of the utility model;

[0017] Figure 3 This is a schematic diagram of the internal structure of the first embodiment of the utility model;

[0018] Figure 4 for Figure 3 The enlarged structural diagram at A in the middle;

[0019] Figure 5 This is a schematic diagram of the connection structure between the scraper and the sliding structure in the utility model;

[0020] Figure 6 This is a schematic diagram of the internal structure of the second embodiment of the present utility model;

[0021] Figure 7 for Figure 6Schematic diagram of the enlarged structure at point B.

[0022] Description of Figure Numbers:

[0023] 1. Evaporator cylinder; 2. Heating jacket; 3. Rotating shaft; 4. Distributor; 5. Scraper cage; 6. Sliding structure; 7. Scraper; 8. Hinge; 9. Hinge shaft; 11. Material inlet; 12. Driving mechanism; 13. Exhaust port; 14. Material outlet; 15. Mounting lug; 21. Hot steam inlet and outlet; 61. Slide; 62. Track scraper groove; 71. Slider. DETAILED DESCRIPTION

[0024] 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. Example

[0025] See also Figure 1-5 The utility model provides the following technical solutions: a movable scraper type thin film evaporator, comprising an evaporator cylinder 1, a driving mechanism 12 is arranged on the upper side of the evaporator cylinder 1, a plurality of heating jackets 2 are wrapped on the outer wall of the evaporator cylinder 1, a rotating shaft 3 connected to the driving mechanism 12 is installed inside the evaporator cylinder 1 through a bearing, a scraper cage 5 is arranged on the rotating shaft 3, a sliding structure 6 is connected to the scraper cage 5, and a scraper 7 that slides inward and outward under the action of centrifugal force is arranged in the sliding structure 6; the sliding structure 6 comprises a track scraper groove 62, a longitudinal slide groove 61 is opened on the inner wall of the track scraper groove 62, and the scraper 7 slides inward and outward on the slide groove 61 through a slider 71; a hinge 8 is arranged on the back of the track scraper groove 62, a hinge shaft 9 is arranged on the end head of the scraper cage 5, and the sliding structure 6 is hinged to the hinge shaft 9 through the hinge 8 on the back of the track scraper groove 62.

[0026] In this embodiment, a material inlet 11 is provided at the upper end of the evaporator cylinder 1, and a distributor 4 is installed inside the evaporator cylinder 1 at a position corresponding to the material inlet 11; a material outlet 14 is provided at the bottom of the evaporator cylinder 1, an exhaust port 13 is provided at the top of the evaporator cylinder 1, and a mounting ear 15 is also provided at the upper end of the evaporator cylinder 1.

[0027] In this embodiment, the driving mechanism 12 includes a motor and a reducer, and the motor is drivingly connected to the rotating shaft 3 via the reducer.

[0028] In this embodiment, the heating jacket 2 is provided with a hot steam inlet and outlet 21 .

[0029] In this embodiment, the scraper 7 adopts a segmented design.

[0030] When the utility model is in use, the scraper 7 is slidably arranged in the slide groove 61 of the track scraper groove 62 through the slider 71, and then the back of the track scraper groove 62 is arranged and rotated on the scraper cage 5 through the hinge 8 through the hinge shaft 9. During the working process, the material enters the evaporator cylinder 1 from the material inlet 11 and is evenly distributed to the inner surface of the evaporator cylinder 1 through the distributor 4. The driving mechanism 12 drives the rotating shaft 3 to drive the scraper cage 5 to rotate. After the scraper cage 5 rotates, centrifugal force is generated on the sliding structure 6 and the scraper 7. The sliding structure 6 is hinged through the hinge 8 and the hinge shaft 9. The shaft 9 rotates on the scraper cage 5, and the scraper 7 slides outward from the track scraper groove 62 under the centrifugal force and is in close contact with the inner wall of the evaporator cylinder 1. The sliding structure 6 rotates and the scraper 7 is centrifugally swung, which allows each section of the scraper 7 to self-adjust the distance from the cylinder wall according to the thickness of the material. Under the action of centrifugal force, it is pressed onto the cylinder wall more thinly. Under the action of gravity and the rotating scraper, it is evenly distributed on the inner wall of the evaporator cylinder 1 to form a downward rotating film, and hot steam is introduced through the heating jacket 2 so that the film is continuously evaporated and concentrated during the descent process, thereby increasing the evaporation efficiency. Example

[0031] like Figure 6-7 As shown, the distinguishing feature of this embodiment from that of Embodiment 1 is that the sliding structure 6 is fixed on the end of the scraper cage 5 through the track scraper groove 62 .

[0032] When the utility model is in use, the driving mechanism 12 drives the rotating shaft 3 to drive the scraper cage 5 to rotate. After the scraper cage 5 rotates, centrifugal force is generated on the sliding structure 6 and the scraper 7. The scraper 7 slides outward from the track scraper groove 62 under the centrifugal force and is in close contact with the inner wall of the evaporator cylinder 1. The sliding structure 6 rotates and the scraper 7 is centrifugally swung, which allows each section of the scraper 7 to self-adjust the distance from the cylinder wall according to the thickness of the material. Under the action of centrifugal force, it is pressed onto the cylinder wall more thinly. Under the action of gravity and the rotating scraper, it is evenly distributed on the inner wall of the evaporator cylinder 1 to form a downward rotating film, and hot steam is introduced through the heating jacket 2 so that the film is continuously evaporated and concentrated during the descent process, thereby increasing the evaporation efficiency.

[0033] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A movable scraper type thin film evaporator, comprising an evaporator cylinder (1), a driving mechanism (12) being provided on the upper side of the evaporator cylinder (1), a plurality of heating jackets (2) being wrapped around the outer wall of the evaporator cylinder (1), a rotating shaft (3) being mounted inside the evaporator cylinder (1) via a bearing and being drivably connected to the driving mechanism (12), characterized in that: A scraper cage (5) is provided on the rotating shaft (3), a sliding structure (6) is connected to the scraper cage (5), and a scraper (7) is provided in the sliding structure (6) and slides inward and outward under the action of centrifugal force.

2. The movable scraper thin film evaporator according to claim 1, characterized in that: The sliding structure (6) comprises a track scraper groove (62), the inner wall of the track scraper groove (62) is provided with a longitudinal sliding groove (61), and the scraper (7) slides inward and outward on the sliding groove (61) via a sliding block (71).

3. The movable scraper thin film evaporator according to claim 2, characterized in that: The sliding structure (6) is fixed on the end of the scraper cage (5) via a track scraper groove (62).

4. The movable scraper thin film evaporator according to claim 2, characterized in that: A hinge (8) is provided on the back of the track scraper groove (62), a hinge shaft (9) is provided on the end of the scraper cage frame (5), and the sliding structure (6) is hinged to the hinge shaft (9) via the hinge (8) on the back of the track scraper groove (62).

5. The movable scraper thin film evaporator according to claim 1, characterized in that: The upper end of the evaporator cylinder (1) is provided with a material inlet (11), and a distributor (4) is installed inside the evaporator cylinder (1) at a position corresponding to the material inlet (11); and the bottom of the evaporator cylinder (1) is provided with a material outlet (14).

6. The movable scraper thin film evaporator according to claim 1, characterized in that: The driving mechanism (12) comprises a motor and a reducer, and the motor is drivingly connected to the rotating shaft (3) via the reducer.

7. The movable scraper thin film evaporator according to claim 1, characterized in that: The heating jacket (2) is provided with a hot steam inlet and outlet (21).

8. The movable scraper thin film evaporator according to claim 1, characterized in that: The top of the evaporator cylinder (1) is provided with an exhaust port (13), and the upper end of the evaporator cylinder (1) is also provided with a mounting lug (15).

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