Outer disc half-tube type film evaporator

Abstract

The utility model relates to the technical field of film evaporation, and particularly discloses an outer disc half-tube type film evaporator, which comprises an evaporation tank and a stirrer arranged in the evaporation tank, the stirrer comprises a stirring shaft, two groups of first hoops are sleeved on the outer side of the stirring shaft, a group of second hoops are arranged below each group of first hoops, and the second hoops are sleeved on the stirring shaft. The first hoop sleeve and the second hoop sleeve are detachably connected with the stirring shaft, two groups of flow guide pipes are fixedly arranged on the outer side of the first hoop sleeve, and two groups of stirring rods are fixedly arranged on the outer side of the second hoop sleeve. The flow guide pipe and the stirring rod are staggered, when the stirring shaft rotates, a liquid agent can be sprayed out through a liquid outlet in the outer side of the flow guide pipe and thrown out, the stirring rod rotates along with the flow guide pipe to stir the liquid agent, and the stirring rod can stir the liquid agent in the rotating process to accelerate diffusion of the liquid agent. The hoop sleeve is fixed with the stirring shaft in a detachable mounting manner, and the flow guide pipe and the stirring rod are convenient to replace.

Description

Technical Field

[0001] The utility model relates to the technical field of thin film evaporation, in particular to an outer disk half-tube thin film evaporator. Background Art

[0002] The external coil half-tube evaporator is a highly efficient evaporation device with a wide range of applications in fine chemical production, polymer production, wastewater treatment, pharmaceutical extraction and concentration, crystallization and drying, juice and dairy processing, and other fields. The coil half-tube evaporator can efficiently process a variety of liquid mixtures, providing high-quality products and services to related industries.

[0003] The outer disk half-tube thin film evaporator includes a heating chamber, an evaporation chamber, an agitator and a condenser. The heating chamber is the core part of the outer disk half-tube evaporator and is usually composed of a jacket or a heating tube. It is used to provide the heat required for evaporation. The evaporation chamber is located above or next to the heating chamber and is used to accommodate the liquid to be evaporated. A series of semicircular pipes (or half-tubes) are set on the inner wall of the evaporation chamber, and these pipes are connected to the heating chamber. The liquid flows into the evaporation chamber through the pipes and forms a thin film on the outer wall of the half-tube, thereby increasing the evaporation area. The agitator is set in the evaporation chamber to stir the liquid. Since the viscosity of some liquids is relatively high, during the long-term stirring process, the blades deep in the liquid layer will be deformed due to the force. The blades of common agitators are mostly fixed to the rotating shaft, so the entire agitator needs to be replaced, which affects manpower and material resources. Utility Model Content

[0004] In response to the above problems, the utility model proposes an outer disk semi-tube thin film evaporator to solve the shortcomings of the existing outer disk semi-tube thin film evaporator. During the long-term stirring process, the blades deep in the liquid layer will be deformed due to the force, and the blades are mostly fixed to the rotating shaft, so the entire agitator needs to be replaced.

[0005] To achieve the purpose of the utility model, the utility model is implemented through the following technical solutions: an outer disk semi-tube thin film evaporator, including an evaporation tank and an agitator arranged in the evaporation tank, the upper end of the evaporation tank is provided with a mounting seat, and the lower end of the evaporation tank is provided with a discharge port;

[0006] The stirrer includes a stirring shaft, which is rotatably connected to the inner side of the mounting base. Two groups of first hoop sleeves are provided on the outer side of the stirring shaft. A group of second hoop sleeves is provided below each group of first hoop sleeves. The first hoop sleeves and the second hoop sleeves are detachably connected to the stirring shaft. A positioning device for limiting the movement of the first hoop sleeves and the second hoop sleeves is provided on the outer side of the stirring shaft.

[0007] Two groups of guide tubes are fixedly arranged on the outside of the first hoop, and two groups of stirring rods are fixedly arranged on the outside of the second hoop. The stirring rods are staggered with the guide tubes. A liquid discharge port is arranged on the outside of the guide tubes, and blades are fixedly arranged on the outside of the stirring rods.

[0008] A further improvement is that: a plurality of feeding troughs are provided on the upper end of the evaporation tank, the feeding troughs are fixedly connected to the side of the evaporation tank, the feeding troughs are communicated with the evaporation tank, a plurality of coils are provided on the outside of the evaporation tank, and the coils are fixedly connected to the evaporation tank by welding.

[0009] A further improvement is that: the first hoop sleeve includes two groups of arc-shaped hoops A that are matched with each other, the guide tube is fixedly connected to the side of the two groups of arc-shaped hoops A away from the stirring shaft, and a first bolt plate is fixedly provided on both sides of the arc-shaped hoop A. The first bolt plate is provided with a first fixing bolt, and the first fixing bolt is threadedly connected to the bolt hole opened on the first bolt plate.

[0010] A further improvement is that the second hoop sleeve includes two groups of arc-shaped hoops B that are matched with each other, the stirring rod is fixedly connected to the side of the two groups of arc-shaped hoops B away from the stirring shaft, and second bolt plates are fixedly provided on both sides of the arc-shaped hoop B. The second bolt plate is provided with a second fixing bolt, and the second fixing bolt is threadedly connected to the bolt hole opened on the second bolt plate.

[0011] A further improvement is that: the positioning device includes a positioning column and a positioning cylinder;

[0012] The positioning column is fixedly connected to the outside of the stirring shaft, and the arc-shaped hoop B is provided with a hole on the side facing the stirring shaft to match the positioning column;

[0013] The positioning cylinder is fixedly connected to the outside of the stirring shaft. The arc hoop A is provided with a jack that matches the positioning cylinder on the side facing the stirring shaft. The stirring shaft, positioning cylinder and guide tube are hollow inside. The guide tube is connected to the stirring shaft through the positioning cylinder.

[0014] A further improvement is that: the outer side of the guide tube is provided with a plurality of drainage ports, and the drainage ports are evenly arranged along the length of the guide tube.

[0015] A further improvement is that the blades on the stirring rod are arranged at an angle.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] The draft tube and stirring rod are staggered. When the stirring shaft rotates, the liquid will be ejected through the discharge port on the outside of the draft tube, throwing the liquid out. The stirring rod rotates with the draft tube, stirring the liquid. The stirring rod stirs the liquid during rotation, accelerating its diffusion. The hoop is fixed to the stirring shaft with a detachable mounting method, making the draft tube and stirring rod easy to replace. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0019] Figure 1 It is a structural diagram of the evaporation tank in the utility model.

[0020] Figure 2 It is a structural diagram of the stirring shaft in the utility model.

[0021] Figure 3 It is a structural diagram of the arc hoop A and the arc hoop B in the utility model.

[0022] Among them: 1. Evaporator; 2. Mounting base; 3. Feed chute; 4. Discharge port; 5. Coil; 6. Agitator shaft; 7. First hoop; 71. Arc hoop A; 72. First bolt plate; 73. First fixing bolt; 8. Second hoop; 81. Arc hoop B; 82. Second bolt plate; 83. Second fixing bolt; 9. Draft tube; 10. Discharge port; 11. Agitator rod; 12. Blades; 13. Positioning column; 14. Positioning cylinder; 15. Socket. DETAILED DESCRIPTION

[0023] To make the purpose, technical solutions, and advantages of the embodiments of this application more clear, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0024] according to Figure 1 、 2 As shown in Figures 3 and 4, this embodiment provides an outer disk semi-tube thin film evaporator, comprising an evaporation tank 1 and an agitator disposed within the evaporation tank 1. A mounting base 2 is disposed at the upper end of the evaporation tank 1, and a discharge port 4 is disposed at the lower end of the evaporation tank 1. A driving motor is fixed to the top of the mounting base 2 via a flange. By controlling the rotation of the agitator within the evaporation tank 1, a liquid agent introduced into the evaporation tank 1 forms a thin film on the inner side of the evaporation tank 1, thereby accelerating the evaporation of the liquid agent.

[0025] Specifically, the stirrer includes a stirring shaft 6, which is rotatably connected to the inner side of the mounting base 2. Two groups of first hoop sleeves 7 are provided on the outer side of the stirring shaft 6. A group of second hoop sleeves 8 is provided below each group of first hoop sleeves 7. The first hoop sleeves 7 and the second hoop sleeves 8 are detachably connected to the stirring shaft 6. A positioning device for limiting the movement of the first hoop sleeves 7 and the second hoop sleeves 8 is provided on the outer side of the stirring shaft 6.

[0026] Two groups of guide tubes 9 are fixedly provided on the outside of the first hoop 7, and two groups of stirring rods 11 are fixedly provided on the outside of the second hoop 8. The stirring rods 11 are staggered with the guide tubes 9. A drainage port 10 is provided on the outside of the guide tubes 9, and blades 12 are fixedly provided on the outside of the stirring rods 11.

[0027] The guide tube 9 is fixed to the outside of the first hoop 7, and the stirring rod 11 is fixed to the outside of the second hoop 8. The guide tube 9 and the stirring rod 11 are staggered. When the stirring shaft 6 rotates, the liquid will be ejected through the discharge port 10 outside the guide tube 9, and the liquid will be thrown out. The stirring rod 11 rotates along with the guide tube 9 to stir the liquid. The stirring rod 11 stirs the liquid during rotation and accelerates the diffusion of the liquid. The first hoop 7 and the second hoop 8 are fixed to the stirring shaft 6 in a detachable installation manner, and the guide tube 9 and the stirring rod 11 are easy to replace.

[0028] The evaporator 1 is equipped with multiple feeding troughs 3 at its top, fixedly attached to the side of the evaporator 1 and communicating with it. Several coils 5 are installed on the outside of the evaporator 1 and welded to the evaporator 1. The liquid to be evaporated enters the evaporator 1 through the feeding troughs 3 and forms a uniform thin film on the heating surface of the evaporator 1. This thin film significantly increases the evaporation area of ​​the liquid, thereby improving evaporation efficiency. The heating surface is composed of several coils 5, and heat is transferred internally by steam, hot water, or other heat media. The high temperature of the heating surface causes the liquid film to evaporate rapidly, forming steam. Because the thin film is so thin, heat is transferred quickly and evenly to the liquid, achieving rapid evaporation.

[0029] Regarding the first hoop 7 and the second hoop 8:

[0030] The first hoop sleeve 7 includes two groups of arc-shaped hoops A71 that are opposite to each other. The guide tube 9 is fixedly connected to the side of the two groups of arc-shaped hoops A71 away from the stirring shaft 6. First bolt plates 72 are fixedly provided on both sides of the arc-shaped hoop A71. The first bolt plate 72 is provided with a first fixing bolt 73, and the first fixing bolt 73 is threadedly connected to the bolt hole opened on the first bolt plate 72.

[0031] The flow guide tube 9 is fixed to the stirring shaft 6 in the form of a hoop. When the flow guide tube 9 is removed from the stirring shaft 6 , the fixing of the first fixing bolt 73 to the first bolt plate 72 is released.

[0032] The second hoop sleeve 8 includes two groups of arc-shaped hoops B81 that are opposite to each other. The stirring rod 11 is fixedly connected to the side of the two groups of arc-shaped hoops B81 away from the stirring shaft 6. Second bolt plates 82 are fixedly provided on both sides of the arc-shaped hoop B81. The second bolt plate 82 is provided with a second fixing bolt 83. The second fixing bolt 83 is threadedly connected to the bolt hole opened on the second bolt plate 82.

[0033] Similarly, the stirring rod 11 is also fixed to the stirring shaft 6 by a hoop. When the stirring rod 11 is removed from the stirring shaft 6 , the fixing of the second fixing bolt 83 to the second bolt plate 82 can be released.

[0034] About positioning device:

[0035] The positioning device includes a positioning column 13 and a positioning cylinder 14;

[0036] The positioning post 13 is fixedly connected to the outside of the stirring shaft 6, and the arc-shaped hoop B81 is provided with a socket 15 on the side facing the stirring shaft 6 to cooperate with the positioning post 13;

[0037] The positioning cylinder 14 is fixedly connected to the outside of the stirring shaft 6, and the arc hoop A71 has a socket 15 on the side facing the stirring shaft 6 to cooperate with the positioning cylinder 14. The stirring shaft 6, the positioning cylinder 14 and the guide tube 9 are hollow inside, and the guide tube 9 is connected to the stirring shaft 6 through the positioning cylinder 14.

[0038] After the arc hoop A71 and the arc hoop B81 are sleeved on the outside of the stirring shaft 6, the positioning column 13 and the positioning cylinder 14 on the outside of the stirring shaft 6 will be inserted into the socket 15 opened on the arc hoop A71 and the arc hoop B81. The positioning column 13 and the socket 15 limit the arc hoop B81 and the arc hoop A71 to ensure that the arc hoop A71 and the arc hoop B81 will not loosen after being fixed on the outside of the stirring shaft 6, and the stability is better.

[0039] The auxiliary materials to be added are added into the stirring shaft 6 through the pipeline, the liquid enters the guide tube 9 through the positioning cylinder 14 outside the stirring shaft 6, and is discharged through the discharge port 10 outside the guide tube 9. The liquid droplets rotate with the stirring shaft 6 and are thrown out by the guide tube 9, thereby improving the uniformity of the liquid distribution.

[0040] It is worth explaining in detail that a plurality of drainage ports 10 are provided on the outside of the flow guiding tube 9 , and the drainage ports 10 are evenly arranged along the length of the flow guiding tube 9 .

[0041] The blades 12 on the stirring rod 11 are arranged at an angle. The inclined blades can generate a large centripetal force, causing the materials to spread outward quickly, thereby forming a large number of eddies. These eddies can quickly mix the materials evenly, improving the mixing speed and uniformity between the materials.

[0042] How this application works:

[0043] The drive motor is secured to the top of the mounting base 2 via a flange. By controlling the rotation of the agitator within the evaporator 1, the liquid solution introduced into the evaporator 1 forms a thin film on the inside of the evaporator 1, thereby accelerating its evaporation. A flow guide tube 9 is secured to the outside of the first hoop 7, and a stirring rod 11 is secured to the outside of the second hoop 8. The flow guide tube 9 and stirring rod 11 are staggered. When the stirring shaft 6 rotates, the liquid solution is ejected through the discharge port 10 on the outside of the flow guide tube 9, ejecting the solution. The stirring rod 11 rotates with the flow guide tube 9, stirring the solution. The stirring rod 11 stirs the solution as it rotates, accelerating its diffusion. The first and second hoop 7, 8, are removably secured to the stirring shaft 6, making the flow guide tube 9 and stirring rod 11 easily replaceable.

[0044] In the description of this application, it should be noted that the terms "upper" and "lower" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application. Unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be internal communication between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0045] The foregoing is merely a list of specific embodiments of the present application, intended to enable those skilled in the art to understand or implement the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application is not limited to the embodiments shown herein, but is intended to conform to the broadest scope consistent with the principles and novel features of the present application.

Claims

1. An outer disk half-tube thin film evaporator, comprising an evaporation tank (1) and an agitator arranged in the evaporation tank (1), characterized in that: The upper end of the evaporation tank (1) is provided with a mounting seat (2), and the lower end of the evaporation tank (1) is provided with a discharge port (4); The stirrer comprises a stirring shaft (6), the stirring shaft (6) being rotatably connected to the inner side of the mounting seat (2), two groups of first hoop sleeves (7) being sleeved on the outer side of the stirring shaft (6), a group of second hoop sleeves (8) being provided below each group of the first hoop sleeves (7), the first hoop sleeves (7) and the second hoop sleeves (8) being detachably connected to the stirring shaft (6), and a positioning device for limiting the movement of the first hoop sleeves (7) and the second hoop sleeves (8) being provided on the outer side of the stirring shaft (6); Two groups of flow guide tubes (9) are fixedly arranged on the outside of the first hoop (7), two groups of stirring rods (11) are fixedly arranged on the outside of the second hoop (8), the stirring rods (11) and the flow guide tubes (9) are staggered, a liquid discharge port (10) is provided on the outside of the flow guide tubes (9), and blades (12) are fixedly arranged on the outside of the stirring rods (11).

2. The outer disk half-tube thin film evaporator according to claim 1, characterized in that: The upper end of the evaporation tank (1) is provided with a plurality of feeding troughs (3), the feeding troughs (3) are fixedly connected to the side of the evaporation tank (1), the feeding troughs (3) are communicated with the evaporation tank (1), and a plurality of coils (5) are provided on the outside of the evaporation tank (1), the coils (5) are fixedly connected to the evaporation tank (1) by welding.

3. The outer disk half-tube thin film evaporator according to claim 1, characterized in that: The first hoop sleeve (7) comprises two groups of arc-shaped hoops A (71) that are matched with each other. The guide tube (9) is fixedly connected to the side of the two groups of arc-shaped hoops A (71) away from the stirring shaft (6). First bolt plates (72) are fixedly provided on both sides of the arc-shaped hoops A (71). The first bolt plates (72) are provided with first fixing bolts (73). The first fixing bolts (73) are threadedly connected to bolt holes provided on the first bolt plates (72).

4. The outer disk half-tube thin film evaporator according to claim 3, characterized in that: The second hoop sleeve (8) comprises two groups of arc-shaped hoops B (81) that are matched with each other. The stirring rod (11) is fixedly connected to the side of the two groups of arc-shaped hoops B (81) away from the stirring shaft (6). Second bolt plates (82) are fixedly provided on both sides of the arc-shaped hoops B (81). The second bolt plates (82) are provided with second fixing bolts (83). The second fixing bolts (83) are threadedly connected to bolt holes provided on the second bolt plates (82).

5. The outer disk half-tube thin film evaporator according to claim 4, characterized in that: The positioning device comprises a positioning column (13) and a positioning cylinder (14); The positioning column (13) is fixedly connected to the outside of the stirring shaft (6), and the arc-shaped hoop B (81) is provided with a socket (15) that cooperates with the positioning column (13) on a side facing the stirring shaft (6); The positioning cylinder (14) is fixedly connected to the outside of the stirring shaft (6); the arc-shaped hoop A (71) is provided with a socket (15) on the side facing the stirring shaft (6) and matched with the positioning cylinder (14); the stirring shaft (6), the positioning cylinder (14) and the guide tube (9) are hollow inside; the guide tube (9) is connected to the stirring shaft (6) through the positioning cylinder (14).

6. The outer disk half-tube thin film evaporator according to claim 1, characterized in that: The outer side of the guide tube (9) is provided with a plurality of drainage ports (10), and the drainage ports (10) are evenly arranged along the length direction of the guide tube (9).

7. The outer disk half-tube thin film evaporator according to claim 1, characterized in that: The blades (12) on the stirring rod (11) are arranged at an angle.

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