Scraper device for evaporator

Abstract

The utility model relates to a scraper device for an evaporator, which belongs to the field of evaporators and comprises a scraper main body and two support plates, the two support plates are vertically distributed at an interval, the scraper main body is positioned between the two support plates, and the scraper main body is rotatably connected with the two support plates; a fixing shaft is vertically and fixedly arranged on the supporting plate in a penetrating mode, a shaft sleeve is arranged on the fixing shaft in a sleeving mode, a driving piece is arranged on the shaft sleeve, the driving piece is used for driving the shaft sleeve to rotate, meanwhile, locking between the shaft sleeve and the fixing shaft is achieved through the driving piece, and the scraper body is fixedly arranged on the shaft sleeve. The driving shaft sleeve rotates to drive the scraper blade body to rotate, the function of adjusting the distance between the scraper blade body and an inner barrel of the evaporator is achieved, namely, the film forming thickness is adjusted, and in addition, the fixing shaft horizontally moves in the kidney-shaped round hole, and the distance between the scraper blade body and the inner barrel of the evaporator is further adjusted.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of scraper device for evaporator, belong to evaporator field. BACKGROUND

[0002] Scraper evaporator is a type of evaporator, applied in petrochemical industry, pharmaceutical and food processing and other industries, is used to realize in liquid feed, liquid or solid material in solid discharge Volatile matter and distillation product equipment, it is forced to form film by rotating scraper, can be carried out falling film evaporation under vacuum condition, is widely used in chemical industry, petrochemical industry, medicine, pesticide, daily chemical, food, fine chemical industry etc.

[0003] The Chinese utility model patent with announcement number CN215136941U discloses a scraper evaporator rotating drum with liquid collecting and redistributing device, which can collect and redistribute the splashed large droplets to the cylinder wall for scraper evaporation. It includes an inner cylinder body and a rotating shaft, the upper end of the rotating shaft is connected with a motor, the rotating shaft is uniformly connected with more than one scraper disc seat along its axial direction, more than one scraper is uniformly installed between the scraper disc seats, screw holes one are formed in the positions of the scraper disc seat corresponding to the top-mounted scrapers, screw holes two are provided in the positions of the scraper disc seat corresponding to the bottom-mounted scrapers, the screw holes one and the screw holes two are respectively connected with the screw holes three in one end of the mounting bracket through bolts, the other end of the mounting bracket is away from the scraper disc seat and connected with the scraper; it further includes a liquid collecting and redistributing device installed between the adjacent two scraper disc seats, the liquid collecting and redistributing device includes a redistribution plate, the redistribution plate is connected with the scraper disc seat or the rotating shaft, and the redistribution plate is inclined upward along the direction away from the inner wall of the inner cylinder body. However, in the prior art, in order to scrape off as much material as possible that adheres to the inner wall of the evaporator cylinder, the scraper is usually kept in close contact with the inner wall of the cylinder at all times, which has the following problems: when the scraper evaporator processes high-viscosity materials, the high-viscosity materials may crystallize on the inner wall of the cylinder and form tightly bonded scale, which can easily cause the scraper to be stuck and unable to perform continuous scraping film operation, affecting the evaporation speed and efficiency; with high-speed rotation of the main shaft, the scale is more likely to wear the scraping edge of the scraper when the scraper collides with the scale, which affects the subsequent scraping effect and reduces the evaporation effect.

[0004] Therefore, there is a need for a scraper device for evaporator that can adjust the position of the scraper and thus adjust the film thickness. UTILITY MODEL CONTENTS

[0005] The technical problem to be solved by the utility model is to overcome the shortcomings of the prior art and provide a scraper device for evaporator that can adjust the position of the scraper and thus adjust the film thickness.

[0006] The utility model discloses a technical scheme that solves the above problems is adopted: a kind of scraper device for evaporator, including scraper main part and two support plates, two support plates are spaced apart up and down, the scraper main part is located between two support plates, the scraper main part is rotationally connected with two support plates;

[0007] The vertical fixing of the support plate is provided with a fixed shaft, a shaft sleeve is sleeved on the fixed shaft, a driving element is arranged on the shaft sleeve, the driving element is used to drive the shaft sleeve to rotate, and the driving element also realizes the locking between the shaft sleeve and the fixed shaft, the scraper main body is fixedly arranged on the shaft sleeve, and a gap is formed between the vertical center line of the scraper main body and the axis of the fixed shaft.

[0008] Preferably, the scraper main body is located on one side of the shaft sleeve, and one side of the scraper main body is fixedly arranged on the shaft sleeve.

[0009] Preferably, the driving element includes a jacking screw and a fixed plate, the fixed plate is fixedly arranged on the support plate, the jacking screw passes through the fixed plate, the jacking screw is threadedly connected with the fixed plate, a push block is arranged on the outer side wall of the shaft sleeve, a groove is arranged on the push block, both ends of the jacking screw are respectively a rotating end and a jacking end, and the jacking end of the jacking screw abuts against the inner wall of the groove.

[0010] Preferably, the jacking end of the jacking screw is a spherical surface, and the groove is matched with the jacking end of the jacking screw.

[0011] Preferably, a first lock nut is arranged on the jacking screw, and the locking between the jacking screw and the fixed plate is realized through the first lock nut.

[0012] Preferably, the fixed shaft is threadedly provided with a second lock nut and a positioning plate, and the second lock nut and the positioning plate abut against the top and the bottom of the support plate, respectively.

[0013] Preferably, a waist round hole is arranged on the support plate, and the fixed shaft passes through the waist round hole.

[0014] Preferably, the scraper main body is a twice-bent structure.

[0015] Preferably, a limiting plate is arranged on the support plate.

[0016] Compared with the prior art, the utility model has the advantages that:

[0017] The utility model discloses a scraper device for evaporator, which drives the rotation of the scraper main body by driving the rotation of the shaft sleeve, thereby realizing the function of adjusting the distance between the scraper main body and the inner cylinder of the evaporator, i.e., adjusting the film thickness. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a structure diagram of the scraper device for the evaporator of the utility model;

[0019] Figure 2 It is Figure 1 A-A direction section view.

[0020] Wherein: the scraper main body 1, the support plate 2, the fixed shaft 3, the shaft sleeve 4, the jacking screw 5, the fixed plate 6, the push block 7, the first lock nut 8, the second lock nut 9, the positioning plate 10, the waist round hole 11, the limiting plate 12. DETAILED DESCRIPTION

[0021] As Figures 1-2 shown, the scraper device for the evaporator in the embodiment includes the scraper main body 1 and two support plates 2, and the two support plates 2 are distributed at intervals up and down, the scraper main body 1 is located between the two support plates 2, and the scraper main body 1 and the two support plates 2 are all rotationally connected;

[0022] The fixed shaft 3 is vertically fixed through the support plate 2, the shaft sleeve 4 is sleeved on the fixed shaft 3, the driving member is arranged on the shaft sleeve 4, the driving member is used to drive the rotation of the shaft sleeve 4, and the driving member also realizes the locking between the shaft sleeve 4 and the fixed shaft 3, the scraper main body 1 is fixedly arranged on the shaft sleeve 4, and a gap is arranged between the vertical center line of the scraper main body 1 and the axis of the fixed shaft 3.

[0023] During work, the scraper main body 1 is placed in the evaporator, and the support plate 2 is fixedly arranged on the main shaft in the evaporator, when the main shaft rotates, the support plate 2 is driven to rotate synchronously, the rotation of the support plate 2 drives the rotation of the fixed shaft 3, at this time, the fixed shaft 3 realizes the locking with the shaft sleeve 4 through the driving member, that is, the rotation of the fixed shaft 3 also drives the synchronous rotation of the shaft sleeve 4, the rotation of the shaft sleeve 4 drives the rotation of the scraper main body 1, and film forming is realized through the rotation of the scraper main body 1.

[0024] In addition, when the distance between the scraper main body 1 and the inner cylinder of the evaporator needs to be adjusted, the shaft sleeve 4 is driven to rotate on the fixed shaft 3 through the driving member, the rotation of the shaft sleeve 4 drives the rotation of the scraper main body 1, that is, the relative rotation between the scraper main body 1 and the fixed shaft 3 is generated, so that the distance between the scraper main body 1 and the inner cylinder of the evaporator can be adjusted, that is, the thickness of the film is adjusted.

[0025] The scraper main body 1 is located on one side of the shaft sleeve 4, and one side of the scraper main body 1 is fixedly arranged on the shaft sleeve 4.

[0026] The driving member comprises a jacking screw 5 and a fixed plate 6, the jacking screw 5 is horizontally arranged, the fixed plate 6 is fixedly arranged on the supporting plate 2, the jacking screw 5 penetrates through the fixed plate 6, the jacking screw 5 is threadedly connected with the fixed plate 6, a push block 7 is arranged on the outer side wall of the shaft sleeve 4, a recess is arranged on the push block 7, the two ends of the jacking screw 5 are respectively a rotating end and a jacking end, the jacking end of the jacking screw 5 abuts against the inner wall of the recess, the jacking end of the jacking screw 5 is a spherical surface, the recess is matched with the jacking end of the jacking screw 5, a first locking nut 8 is arranged on the jacking screw 5, the locking between the jacking screw 5 and the fixed plate 6 is realized through the first locking nut, when the shaft sleeve 4 needs to rotate on the fixed shaft 3, the first locking nut is loosened, the jacking screw 5 is rotated again, the jacking end of the jacking screw 5 pushes the push block 7, and the push block 7 drives the shaft sleeve 4 to rotate, after the shaft sleeve 4 is rotated, the first locking nut 8 is tightened, and the locking between the jacking screw 5 and the fixed plate 6 is realized, so that the jacking screw 5 is prevented from loosening;

[0027] The fixed shaft 3 is threadedly provided with a second locking nut 9 and a positioning plate 10, the second locking nut 9 and the positioning plate 10 abut against the top and the bottom of the supporting plate 2 respectively, so that the second locking nut 9 and the positioning plate 10 realize fixed clamping of the supporting plate 2, that is, realize the locking between the fixed shaft 3 and the supporting plate 2;

[0028] The supporting plate 2 is provided with a waist round hole 11, the fixed shaft 3 penetrates through the waist round hole 11, when the scraper main body 1 needs to be adjusted in position, the second locking nut 9 and the positioning plate 10 are loosened, the fixed shaft 3 moves horizontally in the waist round hole 11, that is, the movement of the scraper main body 1 in the horizontal direction is realized, so that the distance between the scraper main body 1 and the inner cylinder of the evaporator is further adjusted;

[0029] The scraper main body 1 is a twice-bent structure, so that the rigidity of the whole scraper main body 1 is increased;

[0030] The supporting plate 2 is provided with a limiting plate 12, the limiting plate 12 is used for limiting the rotating angle of the scraper main body 1;

[0031] In summary, the rotation of the shaft sleeve 4 drives the rotation of the scraper main body 1, so that the distance between the scraper main body 1 and the inner cylinder of the evaporator is adjusted, that is, the film thickness is adjusted, in addition, the horizontal movement of the fixed shaft 3 in the waist round hole 11 further adjusts the distance between the scraper main body 1 and the inner cylinder of the evaporator.

[0032] In addition to the above-mentioned embodiments, the utility model also includes other implementation manners, and the technical solutions formed by adopting equivalent transformation or equivalent replacement should fall within the protection scope of the utility model claims.

Claims

1. A scraper device for an evaporator, comprising a scraper body (1) and two support plates (2), the two support plates (2) being spaced apart vertically, the scraper body (1) being located between the two support plates (2), characterized in that: The scraper body (1) is rotatably connected to both support plates (2); A fixed shaft (3) is vertically fixedly inserted on the support plate (2). A bushing (4) is sleeved on the fixed shaft (3). A driving component is provided on the bushing (4). The driving component is used to drive the bushing (4) to rotate. At the same time, the driving component also realizes the locking between the bushing (4) and the fixed shaft (3). The scraper body (1) is fixedly installed on the bushing (4). There is a gap between the vertical center line of the scraper body (1) and the axis of the fixed shaft (3).

2. The scraper device for an evaporator according to claim 1, characterized in that: The scraper body (1) is located on one side of the bushing (4), and one side of the scraper body (1) is fixedly mounted on the bushing (4).

3. The scraper device for an evaporator according to claim 1, characterized in that: The driving component includes a tightening screw (5) and a fixing plate (6). The fixing plate (6) is fixedly mounted on the support plate (2). The tightening screw (5) passes through the fixing plate (6) and is threadedly connected to the fixing plate (6). A push block (7) is provided on the outer wall of the bushing (4). A groove is provided on the push block (7). The two ends of the tightening screw (5) are a rotating end and a tightening end, respectively. The tightening end of the tightening screw (5) abuts against the inner wall of the groove.

4. The scraper device for an evaporator according to claim 3, characterized in that: The tightening end of the tightening screw (5) is spherical, and the groove matches the tightening end of the tightening screw (5).

5. The scraper device for an evaporator according to claim 3, characterized in that: The tightening screw (5) is provided with a first anti-loosening nut (8), and the tightening screw (5) and the fixing plate (6) are locked by the first loosening nut.

6. The scraper device for an evaporator according to claim 1, characterized in that: The fixed shaft (3) is threaded with a second anti-loosening nut (9) and a positioning plate (10), which abut against the top and bottom of the support plate (2) respectively.

7. The scraper device for an evaporator according to claim 1, characterized in that: The support plate (2) is provided with an oval hole (11), and the fixed shaft (3) passes through the oval hole (11).

8. The scraper device for an evaporator according to claim 1, characterized in that: The scraper body (1) has a double-bending structure.

9. The scraper device for an evaporator according to claim 1, characterized in that: A limiting plate (12) is provided on the support plate (2).

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