Multi-effect falling film evaporator

Abstract

The utility model relates to the technical field of falling film evaporators, and provides a multi-effect falling film evaporator which comprises a tank body and a stirring structure, the tank body comprises a sealing cover, a feeding pipe, the stirring structure, a splitter plate, an evaporation structure, an air inlet pipe, a discharging pipe, an air outlet pipe and supporting legs, and the sealing cover is arranged at the top end of the tank body; and a feeding pipe is fixed to one side of the top end of the sealing cover, a stirring structure is arranged in the middle of the top end of the sealing cover, and a splitter plate is arranged in the middle of the interior of the tank body. By arranging the evaporation structure, hot air is input into the tank body through the air inlet pipe, the stirring shaft rotates to drive the rotating rod to rotate, the rotating rod drives the driving gear to rotate, and the driving gear rotates to enable the multiple sets of driven gears to drive the evaporation pipe to rotate; and the materials fall into the bottom end of the interior of the tank body after being heated, evaporated and extracted and are discharged outwards through the discharging pipe, so that the evaporation efficiency is improved.

Description

Technical Field

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

[0002] A falling film evaporator is a device used to evaporate a solution. It accelerates the evaporation process by forming a liquid film on the heating tube wall. A multi-effect falling film evaporator is a highly efficient evaporation device that combines the two technologies of multi-effect evaporation and falling film evaporation to improve the utilization rate of thermal energy and evaporation efficiency.

[0003] To this end, the patent with publication number CN205672586U discloses a falling film evaporator, which belongs to the technical field of chemical equipment, including a tank body, an upper cover, and a lower cover, a material inlet is arranged at the upper part of the upper cover, a material outlet is arranged at the lower part of the lower cover, an upper head tube sheet is arranged at the upper end of the tank body, a lower head tube sheet is arranged at the lower end of the tank body, a heat exchange tube is arranged between the upper head tube sheet and the lower head tube sheet, a distribution head is arranged at the inlet of the heat exchange tube, a longitudinal through hole is arranged in the middle of the distribution head, and a secondary steam outlet is also arranged at the upper part of the upper cover; the utility model allows the liquid to enter the inner wall of the heat exchange tube and then force film formation, the film formation effect is good, the water in the liquid is quickly evaporated and discharged from the secondary steam outlet in time, and the concentration efficiency is high;

[0004] The falling film evaporator mentioned above is not convenient for uniformly mixing and stirring the materials during use, so that the materials are evaporated and extracted under uneven mixing conditions, thereby affecting the quality of subsequent film formation, evaporation and separation. At the same time, the evaporation and extraction efficiency is low, which is not conducive to multi-effect evaporation. Utility Model Content

[0005] The utility model aims to provide a multi-effect falling film evaporator to solve the defect of low evaporation efficiency of the existing falling film evaporator.

[0006] In order to solve the above technical problems, the utility model provides the following technical solutions: a multi-effect falling film evaporator, comprising a tank body and a stirring structure;

[0007] The tank body comprises a sealing cover, a feed pipe, a stirring structure, a diverter plate, an evaporation structure, an air inlet pipe, a discharge pipe, an air outlet pipe and legs. The sealing cover is arranged at the top of the tank body, a feed pipe is fixed on one side of the top of the sealing cover, and a stirring structure is arranged at the middle position of the top of the sealing cover;

[0008] A diverter plate is provided at the middle position of the tank body, an evaporation structure is provided at the bottom end of the diverter plate in the tank body, an air inlet pipe is fixed on one side of the bottom of the tank body, and a discharge pipe is fixed on one side of the bottom end of the tank body;

[0009] An air outlet pipe is fixed on one side of the tank body away from the air inlet pipe, and supporting legs are evenly fixed on the bottom end of the tank body.

[0010] Preferably, the stirring structure includes a motor, a stirring shaft, a connecting rod, a stirring paddle and a first bearing. The motor is fixed at the middle position of the top of the sealing cover, a stirring shaft is provided at the top of the tank body, connecting rods are evenly fixed on the outside of the stirring shaft, a stirring paddle is fixed at one end of the connecting rod, and a first bearing is provided on the outside of the bottom end of the stirring shaft.

[0011] Preferably, one end of the stirring shaft passes through the interior of the sealing cover, extends to the outside of the sealing cover and is fixedly connected to the output end of the motor, a plurality of connecting rods are provided, and the connecting rods are evenly spaced on the outside of the stirring shaft, and one end of the stirring paddle is arranged in an arc shape, and one end of the stirring paddle is in conflict with the inner wall of the tank body.

[0012] Preferably, through holes are evenly arranged inside the diverter plate, and the bottom end of the first bearing is fixedly connected to the middle position of the top end of the diverter plate.

[0013] Preferably, the evaporation structure includes a rotating rod, a support plate, a second bearing, a guide tube, an evaporation tube, a driving gear, a driven gear, a bottom plate and a third bearing, the rotating rod is arranged at the bottom end of the diverter plate, a support plate is arranged at the bottom end of the diverter plate outside the rotating rod, a second bearing is arranged at the outside of the rotating rod at the top of the support plate, guide tubes are evenly arranged inside the support plate, an evaporation tube is arranged at the outside of the guide tube at the bottom end of the support plate, a driving gear is arranged at the middle position of the outside of the rotating rod, a driven gear is arranged on one side of the driving gear outside the evaporation tube, a bottom plate is arranged at the bottom end of the rotating rod, and a third bearing is arranged at the top of the bottom plate and the outside of the evaporation tube.

[0014] Preferably, the top end of the rotating rod passes through the interior of the diverter plate, extends to the outside of the diverter plate and is fixedly connected to the bottom end of the stirring shaft, and one end of the guide tube passes through the bottom end of the support plate and extends to the interior of the evaporation tube. The evaporation tube is provided in several groups, and the evaporation tubes are evenly spaced at the bottom end of the support plate.

[0015] Preferably, the top end of the evaporation tube is movably connected to the bottom end of the support plate, the bottom end of the evaporation tube is movably connected to the inside of the bottom plate, the bottom end of the evaporation tube passes through the inside of the bottom plate and extends to the inside of the tank body, and the driving gear is meshed with the driven gear.

[0016] The utility model provides a multi-effect falling film evaporator, which has the advantages of:

[0017] By providing a stirring structure, the stirring shaft is driven to rotate by a motor, and the stirring shaft drives the connecting rod to rotate the stirring paddle inside the tank body, so that the material entering from the feed pipe is stirred and dispersed layer by layer by the stirring paddles on different planes, so that the material is mixed and stirred sufficiently, and then the material is diverted by the diverter plate so that it falls evenly onto the support plate, flows into the interior of the guide pipe, and enters the evaporation pipe for evaporation extraction, which is convenient for subsequent work processing and improves the overall work efficiency;

[0018] By providing an evaporation structure, hot air is input into the interior of the tank body through the air inlet pipe, the rotation of the stirring shaft drives the rotating rod to rotate, the rotating rod drives the driving gear to rotate, the rotation of the driving gear then drives multiple sets of driven gears to drive the evaporation tube to rotate, so that the material in the evaporation tube can be evenly heated to accelerate evaporation and extraction, and after heated evaporation and extraction, the material falls into the bottom end of the tank body and is discharged outward through the discharge pipe, thereby improving the evaporation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0020] Figure 2 It is a front view cross-sectional structural schematic diagram of the utility model;

[0021] Figure 3 It is a schematic diagram of a top view cross-sectional structure of a stirring structure of the utility model;

[0022] Figure 4 It is a schematic diagram of a top view cross-sectional structure of the evaporation structure of the utility model;

[0023] Figure 5 For the utility model Figure 4 Enlarged structural diagram at A in the middle.

[0024] Explanation of the reference numerals in the figure: 1. tank body; 101. sealing cover; 102. feed pipe; 103. stirring structure; 1031. motor; 1032. stirring shaft; 1033. connecting rod; 1034. stirring paddle; 1035. first bearing; 104. diverter plate; 105. evaporation structure; 1051. rotating rod; 1052. support plate; 1053. second bearing; 1054. guide pipe; 1055. evaporation pipe; 1056. driving gear; 1057. driven gear; 1058. bottom plate; 1059. third bearing; 106. air inlet pipe; 107. discharge pipe; 108. air outlet pipe; 109. support leg. DETAILED DESCRIPTION

[0025] 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.

[0026] See also Figure 1-Figure 5 The utility model provides a multi-effect falling film evaporator, which includes a tank body 1 and a stirring structure 103.

[0027] Reference Figure 1-Figure 3 As shown, the tank body 1 includes a sealing cover 101, a feed pipe 102, a stirring structure 103, a diverter plate 104, an evaporation structure 105, an air inlet pipe 106, a discharge pipe 107, an air outlet pipe 108 and a support leg 109. The sealing cover 101 is arranged at the top of the tank body 1, and the feed pipe 102 is fixed on one side of the top of the sealing cover 101. The stirring structure 103 is arranged at the middle position of the top of the sealing cover 101. The stirring structure 103 includes a motor 1031, a stirring shaft 1032, a connecting rod 1033, a stirring paddle 1034 and a first bearing 1035. The motor 1031 is fixed at the middle position of the top of the sealing cover 101. The top of the tank body 1 is provided with a stirring shaft 1032, and the outer side of the stirring shaft 1032 is evenly fixed with connecting rods 1033, a stirring paddle 1034 is fixed at one end of the connecting rod 1033, a first bearing 1035 is arranged on the outer side of the bottom end of the stirring shaft 1032, one end of the stirring shaft 1032 passes through the interior of the sealing cover 101 and extends to the outside of the sealing cover 101 and is fixedly connected to the output end of the motor 1031, a plurality of connecting rods 1033 are arranged, and the connecting rods 1033 are evenly distributed on the outside of the stirring shaft 1032, one end of the stirring paddle 1034 is arranged in an arc shape, and one end of the stirring paddle 1034 is in conflict with the inner wall of the tank body 1, a diverter plate 104 is arranged at the middle position inside the tank body 1, and through holes are evenly arranged inside the diverter plate 104, and the bottom end of the first bearing 1035 is fixedly connected to the middle position of the top of the diverter plate 104.

[0028] The stirring shaft 1032 is driven to rotate by the motor 1031, and the stirring shaft 1032 drives the connecting rod 1033 to rotate the stirring paddle 1034 inside the tank body 1, so that the material entering from the feed pipe 102 is stirred and dispersed layer by layer by the stirring paddles 1034 on different planes, so that the material is mixed and stirred sufficiently, and then the material is diverted by the diverter plate 104 so that it falls evenly on the support plate 1052, flows into the interior of the guide pipe 1054, and enters the evaporation pipe 1055 for evaporation and extraction, which is convenient for subsequent work processing and improves the overall work efficiency.

[0029] Reference Figure 2 , Figure 4 and Figure 5 As shown, the bottom end of the manifold plate 104 in the tank body 1 is provided with an evaporation structure 105, and the evaporation structure 105 includes a rotating rod 1051, a support plate 1052, a second bearing 1053, a guide tube 1054, an evaporation tube 1055, a driving gear 1056, a driven gear 1057, a bottom plate 1058 and a third bearing 1059. The rotating rod 1051 is provided at the bottom end of the manifold plate 104, and the bottom end of the manifold plate 104 outside the rotating rod 1051 is provided with a support plate 1052, and the support plate 105 A second bearing 1053 is disposed on the outer side of the top rotating rod 1051, a guide tube 1054 is evenly disposed inside the support plate 1052, an evaporation tube 1055 is disposed on the outer side of the guide tube 1054 at the bottom end of the support plate 1052, a driving gear 1056 is disposed at the middle position of the outer side of the rotating rod 1051, a driven gear 1057 is disposed on one side of the driving gear 1056 on the outer side of the evaporation tube 1055, a bottom plate 1058 is disposed at the bottom end of the rotating rod 1051, and a rotating rod 1058 is disposed on the top of the bottom plate 1058. The outer sides of the evaporation tube 1055 and the evaporation tube 1051 are both provided with a third bearing 1059. The top end of the rotating rod 1051 penetrates the interior of the diverter plate 104 and extends to the outside of the diverter plate 104 and is fixedly connected to the bottom end of the stirring shaft 1032. One end of the guide tube 1054 penetrates the bottom end of the support plate 1052 and extends to the interior of the evaporation tube 1055. The evaporation tube 1055 is provided with a plurality of groups. The evaporation tubes 1055 are evenly spaced at the bottom end of the support plate 1052. The top end of the evaporation tube 1055 is connected to the support plate 1052. The bottom end of 52 is movably connected, the bottom end of the evaporation tube 1055 is movably connected to the inside of the bottom plate 1058, the bottom end of the evaporation tube 1055 passes through the inside of the bottom plate 1058 and extends to the inside of the tank body 1, the driving gear 1056 is meshingly connected with the driven gear 1057, an air inlet pipe 106 is fixed to one side of the bottom of the tank body 1, a discharge pipe 107 is fixed to one side of the bottom end of the tank body 1, an air outlet pipe 108 is fixed to the side of the tank body 1 away from the air inlet pipe 106, and legs 109 are evenly fixed to the bottom end of the tank body 1.

[0030] Hot air is input into the interior of the tank body 1 through the air inlet pipe 106, and the rotation of the stirring shaft 1032 drives the rotating rod 1051 to rotate, and the rotating rod 1051 drives the driving gear 1056 to rotate. The rotation of the driving gear 1056 causes the multiple groups of driven gears 1057 to drive the evaporation tube 1055 to rotate, so that the material in the evaporation tube 1055 can be evenly heated to accelerate evaporation and extraction. After heated, evaporated and extracted, the material falls into the bottom end of the tank body 1 and is discharged outward through the discharge pipe 107, thereby improving the evaporation efficiency.

[0031] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A multiple-effect falling film evaporator, comprising a tank body (1) and a stirring structure (103); Features: The tank body (1) comprises a sealing cover (101), a feed pipe (102), a stirring structure (103), a splitter plate (104), an evaporation structure (105), an air inlet pipe (106), a discharge pipe (107), an air outlet pipe (108) and a support leg (109); the sealing cover (101) is arranged at the top of the tank body (1); the feed pipe (102) is fixed to one side of the top of the sealing cover (101); and the stirring structure (103) is arranged at the middle position of the top of the sealing cover (101); A diverter plate (104) is arranged at a middle position inside the tank body (1), an evaporation structure (105) is arranged at the bottom end of the diverter plate (104) inside the tank body (1), an air inlet pipe (106) is fixed to one side of the bottom of the tank body (1), and a discharge pipe (107) is fixed to one side of the bottom end of the tank body (1); An air outlet pipe (108) is fixed to a side of the tank body (1) away from the air inlet pipe (106), and supporting legs (109) are evenly fixed to the bottom end of the tank body (1).

2. A multiple-effect falling film evaporator according to claim 1, characterized in that: The stirring structure (103) comprises a motor (1031), a stirring shaft (1032), a connecting rod (1033), a stirring paddle (1034) and a first bearing (1035); the motor (1031) is fixed at the middle position of the top end of the sealing cover (101); the top end of the tank body (1) is provided with a stirring shaft (1032); the connecting rod (1033) is evenly fixed on the outside of the stirring shaft (1032); one end of the connecting rod (1033) is fixed with a stirring paddle (1034); and the outside of the bottom end of the stirring shaft (1032) is provided with a first bearing (1035).

3. A multiple-effect falling film evaporator according to claim 2, characterized in that: One end of the stirring shaft (1032) passes through the interior of the sealing cover (101), extends to the outside of the sealing cover (101), and is fixedly connected to the output end of the motor (1031); a plurality of connecting rods (1033) are provided; the connecting rods (1033) are distributed at equal intervals on the outside of the stirring shaft (1032); one end of the stirring paddle (1034) is arranged in an arc shape; one end of the stirring paddle (1034) is in contact with the inner wall of the tank body (1).

4. A multiple-effect falling film evaporator according to claim 2, characterized in that: Through holes are evenly arranged inside the diverter plate (104), and the bottom end of the first bearing (1035) is fixedly connected to the middle position of the top end of the diverter plate (104).

5. A multiple-effect falling film evaporator according to claim 1, characterized in that: The evaporation structure (105) comprises a rotating rod (1051), a support plate (1052), a second bearing (1053), a guide tube (1054), an evaporation tube (1055), a driving gear (1056), a driven gear (1057), a bottom plate (1058) and a third bearing (1059); the rotating rod (1051) is arranged at the bottom end of the diverter plate (104); the support plate (1052) is arranged at the bottom end of the diverter plate (104) outside the rotating rod (1051); the second bearing (1053) is arranged on the outside of the rotating rod (1051) at the top end of the support plate (1052); The inside of the support plate (1052) is evenly provided with guide tubes (1054); an evaporation tube (1055) is provided on the outside of the guide tube (1054) at the bottom end of the support plate (1052); a driving gear (1056) is provided at the middle position of the outside of the rotating rod (1051); a driven gear (1057) is provided on one side of the driving gear (1056) outside the evaporation tube (1055); a bottom plate (1058) is provided at the bottom end of the rotating rod (1051); and a third bearing (1059) is provided on the outside of the rotating rod (1051) and the evaporation tube (1055) at the top end of the bottom plate (1058).

6. A multiple-effect falling film evaporator according to claim 5, characterized in that: The top end of the rotating rod (1051) passes through the interior of the diverter plate (104), extends to the outside of the diverter plate (104), and is fixedly connected to the bottom end of the stirring shaft (1032); one end of the guide tube (1054) passes through the bottom end of the support plate (1052) and extends to the interior of the evaporation tube (1055); a plurality of groups of evaporation tubes (1055) are provided, and the evaporation tubes (1055) are evenly spaced at the bottom end of the support plate (1052).

7. A multiple-effect falling film evaporator according to claim 5, characterized in that: The top end of the evaporation tube (1055) is movably connected to the bottom end of the support plate (1052), the bottom end of the evaporation tube (1055) is movably connected to the inside of the bottom plate (1058), the bottom end of the evaporation tube (1055) passes through the inside of the bottom plate (1058) and extends to the inside of the tank body (1), and the driving gear (1056) is meshingly connected to the driven gear (1057).

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