Plate heat exchanger

Abstract

The utility model discloses a plate heat exchanger which comprises a first fixing seat and a clamping plate, a plurality of heat exchange pieces are clamped between the first fixing seat and the clamping plate, and the first fixing seat is detachably connected with the clamping plate. A second fixing base is arranged on the side, away from the first fixing base, of the clamping plate, the clamping plate is slidably connected with the second fixing base, a jacking assembly is arranged on the second fixing base and penetrates through the second fixing base to make contact with the clamping plate, and the second fixing base is provided with a jacking nut in threaded connection with the jacking assembly corresponding to the jacking assembly. By using the device, the use convenience of the plate heat exchanger can be optimized, and the working efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of plate heat exchanger equipment, in particular to a plate heat exchanger. Background Art

[0002] A plate heat exchanger is a highly efficient heat exchanger composed of a series of stacked, corrugated metal fins. In the glue production process, steam is used to heat the reactor. This residual heat is captured in a plate heat exchanger, which then heats the heated water for domestic and workshop use.

[0003] Existing plate heat exchangers use a fixed base and a movable plate to clamp multiple heat exchange fins. Typically, multiple connecting rods are installed at the edges of the fixed base and movable plate. Nuts are then set at both ends of the connecting rods. By tightening the nuts, the movable plate is brought closer to the fixed base, thereby clamping and securing the heat exchange fins. Since multiple nuts cannot generally be tightened simultaneously, the tightness of nuts in different areas can vary. Over time, these nuts can become loose, causing the heat exchange fins to loosen and lose their sealing properties. Furthermore, when the heat exchange fins need to be removed, the nuts can become difficult to twist due to the high axial stress applied to them while locked. This significantly complicates the use of conventional plate heat exchangers. Utility Model Content

[0004] In order to solve the above technical problems, the utility model provides a plate heat exchanger.

[0005] The technical solution of the utility model is: a plate heat exchanger comprising a first fixing seat and a clamping plate, wherein a plurality of heat exchange fins are clamped between the first fixing seat and the clamping plate, and the first fixing seat and the clamping plate are detachably connected. A second fixing seat is provided on a side of the clamping plate away from the first fixing seat, and the clamping plate is slidably connected to the second fixing seat. The second fixing seat is provided with a pressing assembly, which passes through the second fixing seat and contacts the clamping plate. The second fixing seat is provided with a pressing nut threadedly connected to the pressing assembly.

[0006] Furthermore, the upper and lower parts of the first and second fixing bases are both provided with guide rods, which pass through the clamping plate and the heat exchange plate and are provided with fastening nuts at both ends, and the two ends of the guide rods are fixedly connected to the first and second fixing bases respectively through the fastening nuts.

[0007] Furthermore, a plurality of screws are symmetrically provided on the edge between the first fixing seat and the splint, and locking nuts are provided at both ends of the screws. The two ends of the screws are fixedly connected to the splint and the first fixing seat respectively through the locking nuts.

[0008] Furthermore, the pressing assembly includes a movable plate and a push rod. The second fixing seat is provided with a stud passing through the movable plate, and both ends of the movable plate are provided with a push rod fixedly connected, one end of the push rod passes through the second fixing seat and contacts the clamping plate.

[0009] Furthermore, one end of the stud passes through the movable plate and is threadedly connected to the pressing nut. A detachable force rod is provided on the side of the pressing nut, and a plurality of circular holes for matching the force rods are provided on the circumference of the pressing nut.

[0010] Furthermore, a detachable extension rod is provided at one end of the push rod close to the splint, and a special-shaped boss is provided on one side of the splint close to the push rod.

[0011] Furthermore, the ends of the extension rod and the push rod that are close to each other are provided with a threaded barrel, and both the extension rod and the push rod are provided with external threads that match the threaded barrel.

[0012] Compared with the existing technology, the advantages of the present invention are: by tightening the pressure nut, the pressure assembly drives the clamping plate close to the first fixing seat, so that the clamping plate exerts maximum clamping force on the heat exchange plate, and then the fasteners are tightened to maintain a consistent clamping degree between the clamping plate and the first fixing seat at all positions. When removing the heat exchange plate, the pressure assembly first applies pressure to the clamping plate to offset the axial stress between the first fixing seat and the clamping plate, which facilitates unlocking the fasteners fixing the clamping plate and the first fixing seat. The pressure assembly improves the convenience of assembling and disassembling the plate heat exchanger, optimizes the convenience of using the plate heat exchanger, and improves work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0014] Figure 1 It is an overall schematic diagram of the utility model;

[0015] Figure 2 This is a side view of the utility model;

[0016] Figure 3 It is a side view of the utility model.

[0017] Among them: 1. First fixing seat; 2. Second fixing seat; 3. Clamp; 11. Screw; 12. Interface; 13. Heat exchange plate; 14. Guide rod; 111. Locking nut; 141. Fastening nut; 21. Stud; 22. Pressing assembly; 23. Pressing nut; 221. Moving plate; 222. Push rod; 223. Extension rod; 224. Threaded barrel; 231. Force rod; 232. Round hole; 31. Special-shaped boss. DETAILED DESCRIPTION

[0018] To make the purpose, technical solution, and advantages of the present invention more clear, the technical solution of the present invention will be described clearly and completely below. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments derived by persons of ordinary skill in the art without inventive effort are also within the scope of protection of the present invention.

[0019] The specific implementation of the present invention will be described below with reference to the accompanying drawings:

[0020] like Figures 1 to 3 As shown, a plate heat exchanger includes a first fixing base 1 and a clamping plate 3. Multiple heat exchange fins 13 are clamped between the first fixing base 1 and the clamping plate 3. The first fixing base 1 and the clamping plate 3 are detachably connected. The first fixing base 1 is provided with multiple symmetrically distributed ports 12, through which heat exchange medium enters the plate heat exchanger for heat exchange.

[0021] A second fixing seat 2 is provided on the side of the splint 3 away from the first fixing seat 1, and the splint 3 is slidably connected to the second fixing seat 2. Guide rods 14 are provided on the upper and lower parts of the first fixing seat 1 and the second fixing seat 2. The guide rods 14 pass through the splint 3 and the heat exchange plate 13, and both the splint 3 and the heat exchange plate 13 can move along the guide rods 14. Fastening nuts 141 are provided at both ends of the guide rod 14, and the two ends of the guide rod 14 are fixedly connected to the first fixing seat 1 and the second fixing seat 2 respectively through the fastening nuts 141. By removing the guide rods 14, the splint 3 can be separated from the first fixing seat 1, and the used heat exchange plate 13 can be removed at one time. The installation process also allows the splint 3, the first fixing seat 1 and the heat exchange plate 13 to be quickly assembled. A plurality of screws 11 are symmetrically provided on the edge between the first fixing seat 1 and the splint 3, and locking nuts 111 are provided at both ends of the screws 11. The two ends of the screws 11 are fixedly connected to the splint 3 and the first fixing seat 1 respectively through the locking nuts 111. By rotating the locking nut 111 , the clamping plate 3 can be brought close to the first fixing seat 1 , so that the clamping plate 3 and the first fixing seat 1 cooperate to clamp the middle heat exchange fin 13 .

[0022] The second fixed seat 2 is provided with a pressing assembly 22, which passes through the second fixed seat 2 and contacts the splint 3. The second fixed seat 2 is provided with a pressing nut 23 threadedly connected to the pressing assembly 22. The pressing assembly 22 includes a movable plate 221 and a push rod 222. The second fixed seat 2 is provided with a stud 21 passing through the movable plate 221. One end of the stud 21 passes through the movable plate 221 and is threadedly connected to the pressing nut 23. Both ends of the movable plate 221 are provided with a fixedly connected push rod 222. One end of the push rod 222 passes through the second fixed seat 2 and contacts the splint 3. By using multiple push rods 222, the upper and lower forces of the splint 3 can be evenly distributed.

[0023] By rotating the pressing nut 23, the movable plate 221 is moved closer to the second fixed seat 2, and the push rod 222 moves accordingly and applies pressure to the clamping plate 3. A detachable force rod 231 is provided on the side of the pressing nut 23, and a plurality of circular holes 232 are provided on the circumference of the pressing nut 23 to match the force rod 231. The force rod 231 is inserted into the circular hole 232. With the help of the leverage of the force rod 231, a sufficiently large torque can be applied to the pressing nut 23, so that the clamping plate 3 can clamp the heat exchange fin 13 to the maximum extent. A detachable extension rod 223 is provided at one end of the push rod 222 close to the clamping plate 3. A threaded barrel 224 is provided at the end where the extension rod 223 and the push rod 222 are close to each other. Both the extension rod 223 and the push rod 222 are provided with external threads that match the threaded barrel 224. The extension rod 223 and the push rod 222 are screwed into the two ends of the threaded barrel 224 respectively, thereby fixedly connected. To prevent the plate heat exchanger from occupying an excessively large volume, the length of the stud 21 should not be excessive. The extension rod 223 allows the push rod 222 to exert external force on the further-away clamping plate 3 within a limited travel distance. A shaped boss 31 is provided on the side of the clamping plate 3 adjacent to the push rod 222. This boss 31 increases the thickness of the contact area between the clamping plate 3 and the push rod 222, preventing deformation caused by excessive pressure. This helps distribute the pressure exerted by the push rod 222 over a wider area, thus strengthening the clamping effect of the clamping plate 3 on the heat exchange fins 13.

[0024] The working principle of the specific embodiment of the utility model is as follows: when assembling the plate heat exchanger, the force rod 231 is used to tighten the pressure nut 23, so that the clamping plate 3 is close to the first fixing seat 1, thereby achieving maximum clamping of the heat exchange fin 13. The locking nuts 111 are then tightened to keep the clamping plate 3 fixed to the first fixing seat 1. When disassembling the plate heat exchanger, the pressure nut 23 is tightened again, so that the pressure of the push rod 222 on the clamping plate 3 offsets the axial stress on the locking nut 111, making it easier to unlock the locking nut 111.

[0025] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be an intermediate element. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. The terms "upper," "lower," "left," "right," "front," "rear," and similar expressions used herein are for illustrative purposes only.

[0026] The above description is merely a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as above in terms of a preferred embodiment, it is not intended to limit the present invention. Any person skilled in the art can, without departing from the scope of the technical solution of the present invention, make some changes or modifications to equivalent embodiments using the technical contents disclosed above. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A plate heat exchanger, comprising a first fixing seat (1) and a clamping plate (3), wherein a plurality of heat exchange fins (13) are clamped between the first fixing seat (1) and the clamping plate (3), and the first fixing seat (1) and the clamping plate (3) are detachably connected, characterized in that: A second fixing seat (2) is provided on the side of the clamping plate (3) away from the first fixing seat (1), the clamping plate (3) is slidably connected to the second fixing seat (2), a pressing assembly (22) is provided on the second fixing seat (2), the pressing assembly (22) passes through the second fixing seat (2) and contacts the clamping plate (3), and the second fixing seat (2) is provided with a pressing nut (23) threadedly connected to the pressing assembly (22).

2. The plate heat exchanger according to claim 1, characterized in that: The upper and lower parts of the first fixing seat (1) and the second fixing seat (2) are both provided with guide rods (14); the guide rods (14) pass through the clamping plate (3) and the heat exchange plate (13), and are provided with fastening nuts (141) at both ends. The two ends of the guide rods (14) are fixedly connected to the first fixing seat (1) and the second fixing seat (2) respectively through the fastening nuts (141).

3. The plate heat exchanger according to claim 1, characterized in that: A plurality of screw rods (11) are symmetrically provided on the edge between the first fixing seat (1) and the clamping plate (3), and locking nuts (111) are provided at both ends of the screw rods (11). The two ends of the screw rods (11) are fixedly connected to the clamping plate (3) and the first fixing seat (1) respectively through the locking nuts (111).

4. The plate heat exchanger according to claim 1, characterized in that: The pressing assembly (22) comprises a movable plate (221) and a push rod (222); a stud (21) passing through the movable plate (221) is provided on the second fixed seat (2); both ends of the movable plate (221) are provided with a fixedly connected push rod (222); one end of the push rod (222) passes through the second fixed seat (2) and contacts the clamping plate (3).

5. The plate heat exchanger according to claim 4, characterized in that: One end of the stud (21) passes through the movable plate (221) and is threadedly connected to the top pressure nut (23); a detachable force rod (231) is provided on the side of the top pressure nut (23), and a plurality of circular holes (232) matching the force rod (231) are provided on the circumference of the top pressure nut (23).

6. The plate heat exchanger according to claim 4, characterized in that: A detachable extension rod (223) is provided at one end of the push rod (222) close to the clamping plate (3), and a special-shaped boss (31) is provided on one side of the clamping plate (3) close to the push rod (222).

7. The plate heat exchanger according to claim 6, characterized in that: The ends of the extension rod (223) and the push rod (222) close to each other are provided with a threaded barrel (224), and both the extension rod (223) and the push rod (222) are provided with external threads that match the threaded barrel (224).

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