A plate evaporator

Abstract

The present invention relates to the technical field of evaporators, and in particular to a plate-type evaporator, comprising a base, a fixing plate fixedly connected to both ends of the upper end face of the base, a fluid inlet pipe connected to the upper end of the front side face of the front fixing plate, and a steam inlet pipe connected to the lower part of the fluid inlet pipe, and a discharge pipe connected to the lower part of the rear side face of the rear fixing plate, a plurality of evaporation plates equidistantly arranged between the two fixing plates, a cavity provided inside the evaporation plate, four through holes evenly provided on the evaporation plate penetrating the front and rear sides of the evaporation plate, handles fixedly connected to the left and right sides of the upper end face of the evaporation plate, plug-in blocks fixedly connected to the left and right sides of the lower end face of the evaporation plate, a slot correspondingly provided on the upper end face of the base, a fixing block fixedly connected to the corresponding evaporation plate on the left and right sides of the upper end face of the base, and a U-shaped groove provided on the inner side of the fixing block. The plate-type evaporator is not only convenient for disassembling and installing a single evaporation plate, but also can ensure the continued operation of the evaporator after the single evaporation plate is disassembled.

Description

Technical Field

[0001] The invention relates to the technical field of evaporators, in particular to a plate type evaporator. Background Art

[0002] Plate evaporator is a plate heat exchanger used in evaporation process. With the advantages of high efficiency, compactness and low price, it has been widely used in petrochemical, food processing, air conditioning and refrigeration, desalination and other fields. Plate evaporator uses plate as the main heat transfer element, which is composed of a series of plates of different shapes arranged side by side. The materials of the plate include metal plate and membrane material. According to the structural form of the heat transfer element, it can be divided into full welded type, semi-welded type and detachable type. According to the process and flow channel form, it can be divided into falling film type, rising film type and lifting film type.

[0003] Regarding the article "Working Principle and Characteristics of Plate Evaporator", the characteristics of plate evaporator are:

[0004] (1) Different heating media can be used: Due to the special geometric shape of the heat exchange plate, the evaporation system can be heated not only by steam but also by hot water; (2) High product quality: The plate evaporator has a compact design structure, short connecting pipelines, small overall size and small footprint; (3) Flexible processing capacity: If you want to increase or decrease the processing capacity (or heat exchange area) of the plate evaporator, you only need to increase or decrease the number of plates to achieve it; (4) Easy to maintain and clean: The plate evaporator is a detachable heat exchanger. To perform maintenance and cleaning, you only need to loosen the clamping bolts and move the movable clamping plate to disassemble the heat exchange plate for maintenance and cleaning.

[0005] However, the existing plate evaporators are fixed by several bolts. When a single evaporation plate is damaged or needs to be repaired, the staff often needs to frequently turn several bolts with tools to disassemble all the evaporation plates in order to take out the single evaporation plate, which greatly increases the labor force and reduces the work efficiency. The repeated disassembly and assembly also causes the evaporator to be unable to work continuously, which is easy to cause economic losses. This is particularly prominent in the food processing industry. The shutdown of the evaporator causes the food processing line to be unable to operate normally, causing food spoilage. Summary of the invention

[0006] The object of the present invention is to provide a plate evaporator to solve the problems raised in the above background technology.

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical scheme: a plate-type evaporator comprises a base, wherein a fixing plate is fixedly connected to both ends of the upper end face of the base, a fluid inlet pipe is connected to the upper end of the front side face of the fixing plate at the front end, and a steam inlet pipe is connected to the lower part of the fluid inlet pipe, and a discharge pipe is connected to the lower part of the rear side face of the fixing plate at the rear end, and a plurality of evaporation plates are equidistantly arranged between the two fixing plates, a cavity is provided inside the evaporation plate, four through holes penetrating the front and rear side faces of the evaporation plate are evenly provided on the evaporation plate, and handles are fixedly connected to the left and right sides of the upper end face of the evaporation plate, plug blocks are fixedly connected to the left and right sides of the lower end face of the evaporation plate, and a slot is correspondingly provided on the upper end face of the base, and fixing blocks are fixedly connected to the corresponding evaporation plates on the left and right sides of the upper end face of the base, and a U-shaped groove is provided on the inner side of the fixing block, and the lower end left side of the evaporation plate The two right corners are in the U-shaped groove, and a cavity extending to the left and right ends of the base is opened inside the fixing block, and a fixing mechanism is arranged in the cavity, and a guide mechanism is arranged between the evaporation plates, and the guide mechanism includes a guide tube, a telescopic tube and a threaded sleeve, the guide tube is fixedly connected to the through hole on the rear side of the evaporation plate, the rear end of the telescopic tube is fixedly connected to the through hole on the front side of the evaporation plate, and a threaded sleeve is arranged between the two adjacent evaporation plates, the rear end of each guide tube is threadedly connected to the internal front end of the threaded sleeve, and the front end of each telescopic tube is threadedly connected to the internal rear end of the threaded sleeve, and the adjacent guide tubes and telescopic tubes are connected through the threaded sleeve, and the left and right sides of the upper end of the evaporation plate are fixedly connected with support blocks, a self-locking mechanism is arranged below the support block, and a pillar is fixed at the center position of the upper end of the front side of the evaporation plate.

[0008] Preferably, a guide block is evenly and fixedly connected to the rear side surface inside each cavity, and the guide block is arranged obliquely, the upper and lower ends of the guide block are in an arc-shaped structure, and the guide block is slightly convex.

[0009] Preferably, a connecting rod is provided under the two support blocks, and the front and rear ends of the connecting rod are respectively fixedly connected to the two fixed plates, and the self-locking mechanism includes a hinge seat, a spring, a limit block and a buckle, the upper end of the hinge seat is fixedly connected to the center position of the lower end surface of the support block, the buckle has an arc-shaped structure, and the buckle is clamped on the left and right sides of the connecting rod, and the upper end of the buckle is hinged to the hinge seat, the limit block is fixedly connected to the left and right sides of the lower end of the buckle, the lower end of the spring is respectively fixedly connected to the upper end surface of the limit block, and the upper end of the spring is fixedly connected to the lower end surface of the support block.

[0010] Preferably, the fixing mechanism includes a threaded rod, a nut, a connecting plate, an insertion rod and a rod hole, the threaded rod respectively passes through the internal cavities on the left and right sides of the base and is threadedly connected to the plug block in the slot, the nut is located in the cavity and is threadedly connected to the threaded rod, the lower end of the connecting plate is fixedly connected to the upper end of the nut, and the insertion rod is fixedly connected to the upper end of the connecting plate, and the rod holes are correspondingly opened at the lower left and right sides of the evaporation plate.

[0011] Preferably, the pillar is composed of a threaded column, a threaded hole, a sleeve and a protective gasket, the rear end of the threaded column is fixedly connected to the center position of the upper end of the front side surface of the evaporation plate, and the threaded hole is correspondingly opened inside the rear end of the sleeve, the sleeve is threadedly connected to the threaded column through the threaded hole, and the protective gasket is fixedly connected to the front end of the sleeve.

[0012] Preferably, limit rods are correspondingly arranged at upper and lower ends of the left and right sides of the evaporation plate, and the front and rear ends of the limit rods are respectively fixedly connected to the two fixing plates, and a rubber ring is sleeved at the contact position between the limit rods and the evaporation plate.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. Each evaporation plate is engaged with a separate self-locking mechanism and a connecting rod, and is fixedly connected to the base through a separate fixing mechanism. When a single evaporation plate is damaged or needs to be repaired, it is only necessary to loosen the threaded rod of the fixing mechanism to disengage the threaded rod and the plug rod from the plug block and the rod hole, and then pull up the handle to remove the single evaporation plate. The operation is simple, time-saving and work efficiency is improved.

[0015] 2. When one of the evaporation plates is removed, the telescopic tube on the front side of the rear evaporation plate can be stretched forward and threadedly connected to the guide tube on the rear side of the front evaporation plate through the threaded sleeve, so that the evaporator can continue to work after one evaporation plate is removed. Although the evaporation effect of the evaporator is slightly reduced, it will not cause the entire evaporator to idle, thereby avoiding stopping the production line and avoiding large economic losses; BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 It is a three-dimensional diagram of the overall structure of the present invention;

[0018] Figure 2 It is a three-dimensional diagram of the fixing mechanism of the present invention;

[0019] Figure 3 For the present invention Figure 1 The cross-sectional view at AA in FIG.

[0020] Figure 4 For the present invention Figure 1 The cross-sectional view at BB in FIG.

[0021] Figure 5 It is a right side view of the present invention;

[0022] Figure 6 For the present invention Figure 3 The enlarged view of point D in the figure;

[0023] Figure 7 For the present invention Figure 3 The enlarged view of point C in the figure;

[0024] Figure 8 It is a cross-sectional view of a support column of the present invention.

[0025] Description of reference numerals:

[0026] 1. Base; 11. Slot; 12. Fixing block; 13. U-shaped groove; 14. Cavity; 2. Fixing plate; 21. Steam inlet pipe; 22. Fluid inlet pipe; 23. Discharge pipe; 3. Fixing mechanism; 31. Threaded rod; 32. Nut; 33. Connecting plate; 34. Inserting rod; 35. Rod hole; 4. Self-locking mechanism; 41. Articulated seat; 42. Spring; 43. Limiting block; 44. Buckle; 5. Evaporation plate; 51. Handle; 52. Through hole; 53. Inserting block; 54. Guide block; 55. Cavity; 56. Support block; 6. Limiting rod; 61. Rubber ring; 7. Connecting rod; 8. Pillar; 81. Threaded column; 82. Threaded hole; 83. Sleeve; 84. Protective pad; 9. Guide mechanism; 91. Guide pipe; 92. Telescopic pipe; 93. Threaded sleeve. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] See also Figures 1 to 8 , the present invention provides a technical solution:

[0029] A plate-type evaporator comprises a base 1, wherein a fixing plate 2 is fixedly connected to both ends of the upper end face of the base 1, a fluid inlet pipe 22 is connected to the upper end of the front side face of the fixing plate 2 at the front end, and a steam inlet pipe 21 is connected to the lower part of the fluid inlet pipe 22, and a discharge pipe 23 is connected to the lower part of the rear side face of the fixing plate 2 at the rear end, and a plurality of evaporation plates 5 are equidistantly arranged between the two fixing plates 2, a cavity 55 is provided inside the evaporation plate 5, four through holes 52 penetrating the front and rear side faces of the evaporation plate 5 are evenly provided on the evaporation plate 5, and handles 51 are fixedly connected to the left and right sides of the upper end face of the evaporation plate 5, and plug blocks 53 are fixedly connected to the left and right sides of the lower end face of the evaporation plate 5, and a slot 11 is correspondingly provided on the upper end face of the base 1, and fixing blocks 12 are fixedly connected to the left and right sides of the upper end face of the base 1 corresponding to the evaporation plate 5, and a U-shaped groove 13 is provided on the inner side of the fixing block 12, and the left and right corners of the lower end of the evaporation plate 5 are arranged in the U-shaped groove 13, and the fixing blocks 53 are fixedly connected to the left and right sides of the lower end face of the evaporation plate 5. A cavity 14 extending to the left and right ends of the base 1 is provided inside 12, and a fixing mechanism 3 is provided in the cavity 14. A guide mechanism 9 is provided between the evaporation plates 5, and the guide mechanism 9 includes a guide tube 91, a telescopic tube 92 and a threaded sleeve 93. The guide tube 91 is fixedly connected to the through hole 52 on the rear side of each evaporation plate 5, and the rear end of the telescopic tube 92 is fixedly connected to the through hole 52 on the front side of each evaporation plate 5. A threaded sleeve 93 is provided between the two adjacent evaporation plates 5. The rear end of each guide tube 91 is threadedly connected to the internal front end of the threaded sleeve 93, and the front end of each telescopic tube 92 is threadedly connected to the internal rear end of the threaded sleeve 93. The adjacent guide tubes 91 and telescopic tubes 92 are connected through the threaded sleeve 93. Support blocks 56 are fixedly connected to the left and right sides of the upper end of the evaporation plate 5, and a self-locking mechanism 4 is provided below the support block 56. A pillar 8 is fixed at the center position of the upper end of the front side of the evaporation plate 5.

[0030] During operation, the insert blocks 53 at the lower ends of the evaporation plates 5 are respectively inserted into the slots 11 on the upper end faces of the base 1 through the handles 51, and the left and right sides of the lower ends of the evaporation plates 5 are inserted into the U-shaped grooves 13 on the inner sides of the fixing blocks 12, and then the evaporation plates 5 are fixed by the fixing mechanisms 3 to prevent the evaporation plates 5 from shaking during operation, and the telescopic tubes 92 on the front side faces of the front evaporation plates 5 are respectively threadedly connected with the fluid inlet pipe 22 and the steam inlet pipe 21 on the front fixing plate 2 through the threaded sleeves 93, and then the guide pipe 91 on the rear side face of the last evaporation plate 5 at the rear end is threadedly connected with the discharge pipe 23 on the rear fixing plate 2 through the threaded sleeves 93, and the fluid is input into the cavity 55 of the evaporation plate 5 through the fluid inlet pipe 22, and then the high-temperature steam is introduced into the cavity 55 through the steam inlet pipe 21, and the fluid flows backward through the evaporation plates 5 in sequence under the action of the guide pipes 91, and continuously evaporates and concentrates under the action of the high-temperature steam, and finally is discharged from the evaporator through the discharge pipe 23.

[0031] As an embodiment of the present invention, Figure 3 and Figure 4 As shown, a guide block 54 is evenly and fixedly connected to the rear side surface inside each cavity 55, and the guide block 54 is arranged obliquely, the upper and lower ends of the guide block 54 are arc-shaped structures, and the guide block 54 is slightly convex.

[0032] During operation, based on the above embodiment, the fluid flows and disperses into a film under the guiding effect of the guide block 54, thereby increasing the contact area with the steam. With the continuous input of steam, the fluid is fully evaporated and concentrated.

[0033] As an embodiment of the present invention, Figure 3 , Figure 5 and Figure 6 As shown, a connecting rod 7 is provided under the two support blocks 56, and the front and rear ends of the connecting rod 7 are respectively fixedly connected to the two fixed plates 2, and the self-locking mechanism 4 includes a hinge seat 41, a spring 42, a limit block 43 and a buckle 44, the upper end of the hinge seat 41 is fixedly connected to the center position of the lower end surface of the support block 56, the buckle 44 is an arc-shaped structure, and the buckle 44 is clamped on the left and right sides of the connecting rod 7, and the upper end of the buckle 44 is hinged to the hinge seat 41, the limit block 43 is fixedly connected to the left and right sides of the lower end of the buckle 44, the lower end of the spring 42 is respectively fixedly connected to the upper end surface of the limit block 43, and the upper end of the spring 42 is fixedly connected to the lower end surface of the support block 56.

[0034] During operation, in the process of inserting the insert block 53 of the evaporation plate 5 into the slot 11 through the handle 51, since the buckle 44 is in an arc-shaped structure, the opening at the lower end of the buckle 44 is easy to open when it touches the connecting rod 7. As the evaporation plate 5 moves downward, the buckle 44 continuously squeezes the connecting rod 7. Since the limit blocks 43 on the left and right sides of the buckle 44 are connected to the support block 56 through the spring 42, and the upper end of the buckle 44 is hinged to the hinge seat 41, when the buckle 44 is subjected to greater pressure, the left and right sides of the buckle 44 will open upward around the hinge seat 41, so that the connecting rod 7 is located on the inner side of the buckle 44, and the spring 42 drives the buckle 44 to return to its original position under the action of the buckle 44, thereby buckling the connecting rod 7, completing self-locking, improving the stability of the evaporation plate 5, and preventing the evaporation plate 5 from shaking left and right during operation.

[0035] As an embodiment of the present invention, Figure 2 , Figure 3 and Figure 7As shown, the fixing mechanism 3 includes a threaded rod 31, a nut 32, a connecting plate 33, an insert rod 34 and a rod hole 35. The threaded rod 31 passes through the internal cavities 14 on the left and right sides of the base 1 and is threadedly connected to the insert block 53 in the slot 11. The nut 32 is located in the cavity 14 and is threadedly connected to the threaded rod 31. The lower end of the connecting plate 33 is fixedly connected to the upper end of the nut 32, and the insert rod 34 is fixedly connected to the upper end of the connecting plate 33. The rod hole 35 is correspondingly opened at the lower left and right sides of the evaporation plate 5.

[0036] During operation, based on the above embodiment, after the insert block 53 at the lower end of the evaporation plate 5 is inserted into the slot 11 on the upper end surface of the base 1, the threaded rod 31 is rotated so that the end of the threaded rod 31 enters the interior of the insert block 53 and is threadedly connected with the insert block 53. Since the nut 32 is threadedly connected with the threaded rod 31, the threaded rod 31 drives the nut 32 to move inward along the threaded rod 31 during the rotation process, thereby driving the insert rod 34 to be inserted into the rod hole 35 at the lower end of the left and right sides of the evaporation plate 5, thereby fixing the evaporation plate 5 to the base 1, improving the stability of the evaporation plate 5, and preventing the evaporation plate 5 from shaking during transportation or operation.

[0037] As an embodiment of the present invention, Figure 1 , Figure 5 and Figure 8 As shown, the support column 8 is composed of a threaded column 81, a threaded hole 82, a sleeve 83 and a protective gasket 84. The rear ends of the threaded columns 81 are fixedly connected to the center position of the upper end of the front side surface of the evaporation plate 5, and the threaded holes 82 are correspondingly opened inside the rear end of the sleeve 83. The sleeve 83 is threadedly connected to the threaded column 81 through the threaded holes 82, and the protective gasket 84 is fixedly connected to the front end of the sleeve 83.

[0038] During operation, after the evaporation plate 5 is fixed, since the sleeve 83 is threadedly connected to the threaded column 81 through the threaded hole 82, the sleeve 83 is rotated to move the sleeve 83 forward until the protective pad 84 abuts against the rear side of the front evaporation plate 5, so that the evaporation plates 5 support each other. The protective pad 84 can prevent the sleeve 83 from scratching the evaporation plate 5 during movement, and cooperate with the self-locking mechanism 4 to prevent the evaporation plate 5 from shaking back and forth and left and right during operation.

[0039] As an embodiment of the present invention, Figure 1 and Figure 2 As shown, limit rods 6 are correspondingly arranged at the upper and lower ends of the left and right sides of the evaporation plate 5, and the front and rear ends of the limit rods 6 are respectively fixedly connected to the two fixing plates 2, and a rubber ring 61 is sleeved at the contact position between the limit rods 6 and the evaporation plate 5.

[0040] During operation, based on the above embodiment, the limiting rod 6 is used to limit and block the left and right sides of the evaporation plate 5, so that the stability of the evaporation plate 5 can be improved. At the same time, the rubber ring 61 can prevent the evaporation plate 5 from being worn by the limiting rod 6 during the installation and disassembly process. When a single evaporation plate 5 is damaged or needs to be repaired, it is only necessary to loosen the threaded rod 31 of the fixing mechanism 3 of the evaporation plate 5, so that the threaded rod 31 and the plug rod 34 are separated from the plug block 53 and the rod hole 35, and then unscrew the threaded sleeve 93 on the telescopic tube 92 on the front side of the evaporation plate 5 and the threaded sleeve 93 on the rear side guide tube 91 so that the evaporation plate 5 loses connection with the front and rear evaporation plates 5. Then, the evaporation plate 5 can be pulled up by the handle 51 to remove the single evaporation plate 5. The operation is simple, time is saved, and work efficiency is improved. Since the telescopic tube 92 can be stretched, when a single evaporation plate 5 is removed, the telescopic tube 92 on the front side of the evaporation plate 5 on the rear side of the evaporation plate 5 can be stretched forward and threadedly connected to the guide tube 91 on the rear side of the front evaporation plate 5 through the threaded sleeve 93, so that the evaporator can continue to work after one evaporation plate 5 is removed. Although the evaporation effect of the evaporator is slightly reduced, it will not cause the entire evaporator to idle, thereby avoiding stopping the production line and avoiding large economic losses.

[0041] Working principle: insert the insert block 53 at the lower end of the evaporation plate 5 into the slot 11 on the upper end surface of the base 1 through the handle 51, and insert the left and right sides of the lower end of the evaporation plate 5 into the U-shaped groove 13 on the inner side of the fixing block 12. In the process of inserting the insert block 53 of the evaporation plate 5 into the slot 11 through the handle 51, since the buckle 44 is in an arc-shaped structure, the opening at the lower end of the buckle 44 is easy to open when it touches the connecting rod 7. As the evaporation plate 5 moves downward, the buckle 44 continuously squeezes the connecting rod 7. Since the limit blocks 43 on the left and right sides of the buckle 44 are connected to the support block 56 through the spring 42, and the upper end of the buckle 44 is hinged to the hinge seat 41, when the buckle 44 is subjected to greater pressure, the left and right sides of the buckle 44 will open upward around the hinge seat 41, so that the connecting rod 7 7 is located on the inner side of the buckle 44, and under the action of the spring 42, the buckle 44 is driven back to its original position to buckle the connecting rod 7, completing self-locking, improving the stability of the evaporation plate 5, and thus preventing the evaporation plate 5 from shaking left and right during operation. After the plug block 53 at the lower end of the evaporation plate 5 is inserted into the slot 11 on the upper end surface of the base 1, the threaded rod 31 is rotated so that the end of the threaded rod 31 enters the interior of the plug block 53 and is threadedly connected to the plug block 53. Since the nut 32 is threadedly connected to the threaded rod 31, the threaded rod 31 drives the nut 32 to move inward along the threaded rod 31 during rotation, thereby driving the plug rod 34 to be inserted into the rod hole 35 at the lower end of the left and right sides of the evaporation plate 5, thereby fixing the evaporation plate 5 and the base 1, improving the stability of the evaporation plate 5, and preventing the evaporation plate 5 from shaking left and right during operation. In case of shaking during transportation or operation, after the evaporation plate 5 is fixed, since the sleeve 83 is threadedly connected to the threaded column 81 through the threaded hole 82, the sleeve 83 is rotated to move the sleeve 83 forward until the protective pad 84 abuts against the rear side of the front evaporation plate 5, so that the evaporation plates 5 support each other. The protective pad 84 can prevent the sleeve 83 from scratching the evaporation plate 5 during movement, and cooperate with the self-locking mechanism 4 to prevent the evaporation plate 5 from shaking forward and backward and left and right during operation. The telescopic tube 92 on the front side of the front evaporation plate 5 is threadedly connected to the fluid inlet pipe 22 and the steam inlet pipe 21 on the front fixing plate 2 through the threaded sleeve 93, and then the rear side guide pipe 91 of the last evaporation plate 5 at the rear end is connected to the outlet pipe 22 on the rear fixing plate 2 through the threaded sleeve 93. The material pipe 23 is threadedly connected, and the fluid is input into the cavity 55 of the evaporation plate 5 through the fluid inlet pipe 22, and then the high-temperature steam is introduced into the cavity 55 through the steam inlet pipe 21. The fluid flows backward through the evaporation plate 5 in sequence under the action of the guide pipe 91, and is continuously evaporated and concentrated under the action of the high-temperature steam, and finally discharged from the evaporator through the discharge pipe 23. The left and right sides of the evaporation plate 5 are limited and blocked by the limit rod 6, which can improve the stability of the evaporation plate 5. At the same time, the rubber ring 61 can prevent the evaporation plate 5 from being worn against the limit rod 6 during the installation and disassembly process. When a single evaporation plate 5 is damaged or needs to be repaired, it is only necessary to loosen the threaded rod 31 of the fixing mechanism 3 of the evaporation plate 5, so that the threaded rod 31 and the plug rod 34 are separated from the plug block 53 and the rod hole 35.Then unscrew the threaded sleeve 93 on the telescopic tube 92 on the front side of the evaporation plate 5 and the threaded sleeve 93 on the rear side guide tube 91 to make the evaporation plate 5 lose connection with the front and rear evaporation plates 5, and then pull up the evaporation plate 5 by the handle 51 to remove the single evaporation plate 5. The operation is simple, time is saved, and work efficiency is improved. Since the telescopic tube 92 can be stretched, when a single evaporation plate 5 is removed, the telescopic tube 92 on the front side of the evaporation plate 5 on the rear side of the evaporation plate 5 can be stretched forward and threadedly connected to the guide tube 91 on the rear side of the front evaporation plate 5 through the threaded sleeve 93, so that the evaporator can continue to work after one evaporation plate 5 is removed. Although the evaporation effect of the evaporator is slightly reduced, it will not cause the entire evaporator to idle, thereby avoiding stopping the production line and avoiding large economic losses.

[0042] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A plate evaporator, comprising a base (1), characterized in that: The upper end face of the base (1) is fixedly connected to a fixing plate (2) at both ends, the upper end of the front side face of the fixing plate (2) at the front end is connected to a fluid inlet pipe (22), and the lower part of the fluid inlet pipe (22) is connected to a steam inlet pipe (21), and the lower part of the rear side face of the fixing plate (2) at the rear end is connected to a discharge pipe (23), a plurality of evaporation plates (5) are arranged equidistantly between the two fixing plates (2), a cavity (55) is provided inside the evaporation plate (5), four through holes (52) penetrating the front and rear side faces of the evaporation plate (5) are evenly provided on the evaporation plate (5), and handles (51) are fixedly connected to the left and right sides of the upper end face of the evaporation plate (5), plug blocks (53) are fixedly connected to the left and right sides of the lower end face of the evaporation plate (5), and the upper end face of the base (1) corresponds to the upper end face of the fixing plate (2). A slot (11) is provided, and a fixing block (12) is fixedly connected to the evaporation plate (5) on the left and right sides of the upper end surface of the base (1), and the fixing block (12) is provided with a U-shaped groove (13) on the inner side, and the left and right corners of the lower end of the evaporation plate (5) are placed in the U-shaped groove (13). A cavity (14) extending to the left and right ends of the base (1) is provided inside the fixing block (12), and a fixing mechanism (3) is provided in the cavity (14). The fixing mechanism (3) comprises a threaded rod (31), a nut (32), a connecting plate (33), an insert rod (34) and a rod hole (35). The threaded rod (31) passes through the inner cavities (14) on the left and right sides of the base (1) and is threadedly connected to the insert block (53) in the slot (11). The nut (32) is located in the cavity (14) and is threadedly connected to the threaded rod (31); the lower end of the connecting plate (33) is fixedly connected to the upper end of the nut (32); the insert rod (34) is fixedly connected to the upper end of the connecting plate (33); the rod hole (35) is correspondingly opened below the left and right sides of the evaporation plate (5); a flow guide mechanism (9) is provided between the evaporation plates (5); the flow guide mechanism (9) comprises a flow guide tube (91), a telescopic tube (92) and a threaded sleeve (93); the flow guide tube (91) is fixedly connected to the through hole (52) on the rear side of the evaporation plate (5); a threaded sleeve (93) is provided between two adjacent evaporation plates (5); the rear end of each of the flow guide tubes (91) is threadedly connected to the internal front end of the threaded sleeve (93); The front end of each telescopic tube (92) is threadedly connected to the inner rear end of the threaded sleeve (93), and the adjacent guide tubes (91) and telescopic tubes (92) are connected through the threaded sleeve (93). The upper end of the evaporation plate (5) is fixedly connected to support blocks (56) on both sides, and a self-locking mechanism (4) is arranged below the support blocks (56). A connecting rod (7) is arranged below the two support blocks (56), and the front and rear ends of the connecting rod (7) are respectively fixedly connected to the two fixed plates (2). The self-locking mechanism (4) comprises a hinge seat (41), a spring (42), a limit block (43) and a buckle (44). The upper end of the hinge seat (41) is fixedly connected to the center position of the lower end surface of the support block (56), and the buckle (44) is in an arc-shaped structure.The buckle (44) is clamped on the left and right sides of the connecting rod (7), and the upper end of the buckle (44) is hinged to the hinge seat (41), the limit block (43) is fixedly connected to the left and right sides of the lower end of the buckle (44), the lower end of the spring (42) is respectively fixedly connected to the upper end surface of the limit block (43), the upper end of the spring (42) is fixedly connected to the lower end surface of the support block (56), the upper and lower ends of the left and right side surfaces of the evaporation plate (5) are correspondingly provided with limit rods (6), and the front and rear ends of the limit rods (6) are respectively fixedly connected to the two fixed plates (2), the contact position between the limit rod (6) and the evaporation plate (5) is sleeved with a rubber ring (61), and the center position of the upper end of the front side surface of the evaporation plate (5) is fixed with a support column (8); Each evaporation plate (5) is engaged with a separate self-locking mechanism (4) and a connecting rod (7), and is fixedly connected to the base (1) through a separate fixing mechanism (3). When a single evaporation plate (5) is damaged or needs to be repaired, it is only necessary to loosen the threaded rod (31) of the fixing mechanism (3) to disengage the threaded rod (31) and the plug rod (34) from the plug block (53) and the rod hole (35), and then pull up the handle (51) to remove the single evaporation plate (5); when one of the evaporation plates (5) is removed, the telescopic tube (92) on the front side of the rear evaporation plate (5) can be stretched forward through the threaded sleeve (93) and threadedly connected to the guide tube (91) on the rear side of the front evaporation plate (5), so that the evaporator can continue to work after one evaporation plate (5) is removed.

2. A plate evaporator according to claim 1, characterized in that: A guide block (54) is evenly and fixedly connected to the rear side surface inside each cavity (55), and the guide block (54) is arranged obliquely, the upper and lower ends of the guide block (54) are in an arc-shaped structure, and the guide block (54) is slightly convex.

3. A plate evaporator according to claim 1, characterized in that: The support column (8) is composed of a threaded column (81), a threaded hole (82), a sleeve (83) and a protective pad (84); the rear end of the threaded column (81) is fixedly connected to the center position of the upper end of the front side surface of the evaporation plate (5), and the threaded hole (82) is correspondingly opened inside the rear end of the sleeve (83); the sleeve (83) is threadedly connected to the threaded column (81) through the threaded hole (82), and the protective pad (84) is fixedly connected to the front end of the sleeve (83).

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