Detachable plate heat exchanger with low flow resistance structure

Abstract

The utility model discloses a detachable plate heat exchanger with a low flow resistance structure, which comprises a movable pressing plate and a sealing gasket arranged at the right end of the movable pressing plate, the right end of the sealing gasket is provided with a heat exchange plate connecting group, the right end of the heat exchange plate connecting group is provided with four groups of heat exchange sheets, the right ends of the heat exchange sheets are provided with a fixed frame plate, and the fixed frame plate is connected with the movable pressing plate. The device further comprises connecting pipes, the connecting pipes are arranged at the four corners of the right end of the fixed frame plate, a bearing plate is installed at the lower end of the fixed frame plate, a positioning rod is arranged in the fixed frame plate, and the left end of the positioning rod is in threaded connection with a threaded cap to achieve the detaching effect. According to the detachable plate heat exchanger with the low flow resistance structure, the problems that when an existing plate heat exchanger is used, although the size of the heat exchanger can be effectively reduced, internal parts of the heat exchanger are inconvenient to detach and repair, and the effect of low flow resistance is inconvenient to achieve are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of plate heat exchangers, in particular to a detachable plate heat exchanger with a low flow resistance structure. Background Art

[0002] A plate heat exchanger is a highly efficient heat exchanger made of a series of stacked metal sheets with a certain corrugated shape. Thin rectangular channels are formed between these metal sheets, and heat is exchanged through the plates. The design of the plate heat exchanger optimizes the heat exchange efficiency while ensuring that the two fluids do not directly contact and mix, thereby achieving efficient heat transfer, such as:

[0003] A plate heat exchanger provided by announcement number CN105066751B, wherein adjacent plates of the plate heat exchanger are provided with a first sealing ring and a second sealing ring on one side, and the first sealing ring opposite to the first sealing ring forms a steam cavity after cooperation, and the second sealing ring opposite to the second sealing ring forms a seawater cavity after cooperation, steam enters the steam cavity through a heat source inlet, and seawater enters the seawater cavity through a seawater inlet, and a third sealing ring and a fourth sealing ring are provided.

[0004] After one side of the sealing ring is matched, the third sealing ring opposite to it is matched to form a seawater evaporation chamber. The device provided by this scheme uses a plate heat exchanger instead of a tube heat exchanger. The two media in the plate heat exchanger flow in reverse, and the heat exchange efficiency is high, so the end temperature difference of about 1°C can be achieved very economically. At this time, the plate length does not need to be very long. Compared with the tube heat exchanger, the volume of the heat exchanger can be effectively reduced, thereby reducing the footprint of the seawater desalination multi-effect evaporation system.

[0005] The above-mentioned prior art solutions have the following defects: although the existing plate heat exchanger can effectively reduce the volume of the heat exchanger when in use, it is not convenient to disassemble and repair the internal parts of the heat exchanger, and it is not convenient to achieve the effect of low flow resistance. Therefore, the utility model provides a detachable plate heat exchanger with a low flow resistance structure to solve the above-mentioned problems. Utility Model Content

[0006] The purpose of the utility model is to provide a detachable plate heat exchanger with a low flow resistance structure to solve the problem that the existing plate heat exchanger proposed in the above background technology can effectively reduce the volume of the heat exchanger when in use, but it is not convenient to disassemble and repair the internal parts of the heat exchanger, and it is not convenient to achieve the effect of low flow resistance.

[0007] To achieve the above object, the present utility model provides the following technical solutions: A detachable plate heat exchanger provided with a low-flow resistance structure, comprising: a movable pressing plate, and a sealing gasket disposed at the right end of the movable pressing plate, and a heat exchange plate connection group is installed at the right end of the sealing gasket. Four groups of heat exchange fins are provided at the right end of the heat exchange plate connection group, and a fixed frame plate is provided at the right end of the heat exchange fins. It further includes:

[0008] Connecting pipes. Connecting pipes are provided at the four corners at the right end of the fixed frame plate, and a bearing plate is installed at the lower end of the fixed frame plate. A positioning rod is provided inside the fixed frame plate, and a threaded cap is threadedly connected to the left end of the positioning rod to play a role in disassembly;

[0009] A support plate is disposed on the left side of the movable pressing plate, and a stable bottom plate forming an integral structure is provided at the lower end of the support plate. A threaded rod is provided at the upper end of the support plate, and a limiting rod is threadedly connected inside the lower end of the support plate;

[0010] An upper guiding limiting plate is provided above the heat exchange plate connection group.

[0011] As a preferred technical solution of the present utility model, the upper guiding limiting plate further includes a limiting groove opened at the upper end of the upper guiding limiting plate, and a mounting plate fixed on the movable pressing plate is provided on the left side of the upper guiding limiting plate, and a roller column is rotatably connected to the inner end of the mounting plate.

[0012] As a preferred technical solution of the present utility model, the upper guiding limiting plate is connected to the roller column in a sliding manner through the limiting groove, and the longitudinal section of the upper guiding limiting plate is in a "king" character structure, and the lower end of the upper guiding limiting plate is respectively engaged with the sealing gasket, the heat exchange plate connection group and the heat exchange fins.

[0013] As a preferred technical solution of the present utility model, the support plate is fixedly connected to the upper guiding limiting plate through the threaded rod to limit the upper guiding limiting plate, and the threaded rod at the upper end of the fixed frame plate is connected to the upper guiding limiting plate.

[0014] As a preferred technical solution of the present utility model, the bearing plate further includes a connecting rod disposed inside the bearing plate, and a connecting ring is installed on the outer surface of the connecting rod.

[0015] As a preferred technical solution of the present utility model, the longitudinal section of the bearing plate is in an "L" character structure, and the bearing plate is symmetrically arranged about the transverse axis of the movable pressing plate, and the connecting rod in the movable pressing plate is threadedly connected to the connecting ring.

[0016] As a preferred technical solution of the present utility model, an inclined groove-like structure is provided inside the sealing gasket and the heat exchange fins, and the hole-like structures opened on the sealing gasket and the heat exchange fins are aligned with the grooves on the movable pressing plate.

[0017] Compared with the prior art, the beneficial effects of the present utility model are as follows: The detachable plate heat exchanger provided with a low flow resistance structure solves the problems that although the existing plate heat exchanger can effectively reduce the volume of the heat exchanger during use, it is not convenient to disassemble and repair the internal parts of the heat exchanger and it is not easy to achieve the effect of low flow resistance;

[0018] There are 4 heat exchange fins arranged at the right end of the heat exchange plate connection group, and a fixed frame plate is arranged at the right end of the heat exchange fins. An inclined groove-like structure is arranged inside the sealing gasket and the heat exchange fins, and the hole-like structures opened on the sealing gasket and the heat exchange fins coincide with the grooves on the movable pressing plate. The relative levels of the annular planes at the edges of the diagonal holes in each group are different. The vertical distance between the annular planes of the diagonal holes in different groups at relatively high and low positions is the height of one concave-convex corrugation. When the heat exchange plates are stacked together, there is a flow channel with two concave-convex corrugation heights, which can achieve the effect of low flow resistance during use;

[0019] There is a threaded rod at the upper end of the support plate, and a limiting rod is internally threaded at the lower end of the support plate. By rotating the threaded nut, the threaded nut is disengaged from the left end of the positioning rod, and then the positioning rod is sequentially pulled out from the movable pressing plate, the sealing gasket, the heat exchange plate connection group and the heat exchange fins. At the same time, the threaded rod is rotated to disengage the threaded rod from the fixed frame plate. At this time, the sealing gasket and the heat exchange fins can be replaced, which is convenient for disassembly and repair;

[0020] Furthermore, the upper guide limiting plate is connected to the roller column in a sliding manner through the limiting groove, and the longitudinal section of the upper guide limiting plate is in a "king" character structure. The lower end of the upper guide limiting plate is respectively engaged with the sealing gasket, the heat exchange plate connection group and the heat exchange fins. The support plate is fixedly connected to the upper guide limiting plate through the threaded rod to play a limiting role on the upper guide limiting plate. The threaded rod at the upper end of the fixed frame plate is connected to the upper guide limiting plate. By rotating the threaded rod, the threaded rod is disengaged from the support plate and the upper guide limiting plate, and at the same time, the threaded rod at the other end is disengaged from the fixed frame plate. By pulling the upper guide limiting plate, the roller column rotates in the mounting plate and slides in the limiting groove at this time, so as to facilitate the extraction of the upper guide limiting plate, reduce the wear between parts and increase the service life of the parts when replacing parts.

[0021] The longitudinal section of the bearing plate is in an "L" shape, and the bearing plate is symmetrically arranged about the transverse axis of the movable pressing plate. The connecting rod in the movable pressing plate is connected to the connecting ring in a threaded manner. By rotating the connecting ring, the connecting rod is pulled out of the connecting ring. When the bearing plate support is damaged, it is convenient to replace it. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the present utility model;

[0023] Figure 2 Schematic diagram of the overall cross-sectional structure of the positioning rod and the movable pressing plate of the present utility model;

[0024] Figure 3 Schematic diagram of the overall exploded structure of the present utility model;

[0025] Figure 4 For the present utility model Figure 3 Enlarged structure diagram at position A in;

[0026] Figure 5 Schematic diagram of the overall cross-sectional structure of the connection between the movable pressing plate and the threaded rod of the present utility model.

[0027] In the figure: 1, movable pressing plate; 2, sealing gasket; 3, heat exchange plate connection group; 4, heat exchange fins; 5, stable bottom plate; 6, support plate; 7, upper guide limiting plate; 8, limiting groove; 9, mounting plate; 10, roller column; 11, threaded rod; 12, connecting pipe; 13, fixed frame plate; 14, bearing plate; 15, connecting rod; 16, connecting ring; 17, positioning rod; 18, threaded nut; 19, limiting rod. Specific embodiments

[0028] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0029] Please refer to Figures 1-5 , the present utility model provides a technical solution: a detachable plate heat exchanger provided with a low flow resistance structure, including a movable pressing plate 1, and a sealing gasket 2 arranged at the right end of the movable pressing plate 1, and a heat exchange plate connection group 3 is installed at the right end of the sealing gasket 2. Specifically, as shown in Figure 3 and Figure 4 , 4 groups of heat exchange fins 4 are arranged at the right end of the heat exchange plate connection group 3, and a fixed frame plate 13 is arranged at the right end of the heat exchange fins 4. An inclined groove structure is arranged inside the sealing gasket 2 and the heat exchange fins 4, and the hole structures opened on the sealing gasket 2 and the heat exchange fins 4 are in line with the grooves on the movable pressing plate 1. The relative levels of the ring planes at the openings of the diagonal holes in each group are different. For the relatively high and low positions, the vertical distance between the ring planes at the openings of the diagonal holes in different groups is the height of one concavo-convex corrugation. When the heat exchange plates are stacked together, a flow channel with two concavo-convex corrugation heights can be formed, which can achieve the effect of low flow resistance during use.

[0030] Specifically, as shown in Figure 1 and Figure 2Among them, the connecting pipe 12 is provided at the four corners of the right end of the fixed frame plate 13. A bearing plate 14 is installed at the lower end of the fixed frame plate 13. A positioning rod 17 is arranged inside the fixed frame plate 13. A threaded cap 18 is threadedly connected to the left end of the positioning rod 17 to play a role in disassembly; the support plate 6 is arranged on the left side of the movable pressing plate 1. A stable bottom plate 5 which forms an integral structure is arranged at the lower end of the support plate 6. A threaded rod 11 is provided at the upper end of the support plate 6. A limiting rod 19 is threadedly connected inside the lower end of the support plate 6. By rotating the threaded cap 18, the threaded cap 18 is disengaged from the left end of the positioning rod 17, and then the positioning rod 17 is successively pulled out from the movable pressing plate 1, the sealing gasket 2, the heat exchange plate connection group 3 and the heat exchange fins 4. At the same time, the threaded rod 11 is rotated to disengage the threaded rod 11 from the fixed frame plate 13. At this time, the sealing gasket 2 and the heat exchange fins 4 can be replaced, which is convenient for disassembly and repair;

[0031] Specifically 1, Figure 3 and Figure 5 Among them, as shown in the figure, the upper guide limiting plate 7 is arranged on the upper side of the heat exchange plate connection group 3. The upper guide limiting plate 7 further includes a limiting groove 8 opened at the upper end of the upper guide limiting plate 7. An installation plate 9 fixed on the movable pressing plate 1 is arranged on the left side of the upper guide limiting plate 7. A roller column 10 is rotatably connected to the inner end of the installation plate 9. The upper guide limiting plate 7 is connected to the roller column 10 in a sliding manner through the limiting groove 8. The longitudinal section of the upper guide limiting plate 7 is in a "king" - shaped structure. The lower end of the upper guide limiting plate 7 is respectively engaged with the sealing gasket 2, the heat exchange plate connection group 3 and the heat exchange fins 4. The support plate 6 is fixedly connected to the upper guide limiting plate 7 through the threaded rod 11 to play a role in limiting the upper guide limiting plate 7. The threaded rod 11 at the upper end of the fixed frame plate 13 is connected to the upper guide limiting plate 7. By rotating the threaded rod 11, the threaded rod 11 is disengaged from the support plate 6 and the upper guide limiting plate 7. At the same time, the threaded rod 11 at the other end is disengaged from the fixed frame plate 13. By pulling the upper guide limiting plate 7, at this time, the roller column 10 rotates in the installation plate 9 and slides in the limiting groove 8, so as to facilitate the extraction of the upper guide limiting plate 7. When replacing parts, the wear between parts is reduced, and the service life of parts is increased. The bearing plate 14 further includes a connecting rod 15 arranged inside the bearing plate 14. A connecting ring 16 is installed on the outer surface of the connecting rod 15. The longitudinal section of the bearing plate 14 is in an "L" - shaped structure. The bearing plate 14 is symmetrically arranged about the transverse axis of the movable pressing plate 1. The connecting rod 15 in the movable pressing plate 1 is threadedly connected to the connecting ring 16. By rotating the connecting ring 16, the connecting rod 15 is pulled out of the connecting ring 16. When the bearing plate 14 is damaged, it is convenient to replace it. This is the usage method of the detachable plate - type heat exchanger with a low - flow - resistance structure.

[0032] All the standard parts used in the present utility model can be purchased from the market. The special-shaped parts can be customized according to the descriptions in the specification and the attached drawings. The specific connection methods of each part all adopt conventional means such as bolts, rivets, welding, etc. that are mature in the prior art. The machinery, parts and equipment all adopt conventional models in the prior art. In addition, the circuit connection adopts the conventional connection method in the prior art, which will not be elaborated here. The content not described in detail in this specification belongs to the prior art well-known to those skilled in the art.

[0033] Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments, or perform equivalent substitution on some of the technical features. Any modification, equivalent substitution, improvement, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A detachable plate heat exchanger provided with a low flow resistance structure, comprising: The movable pressing plate (1), and a sealing gasket (2) arranged at the right end of the movable pressing plate (1), and a heat exchange plate connection group (3) is installed at the right end of the sealing gasket (2). Four groups of heat exchange fins (4) are arranged at the right end of the heat exchange plate connection group (3), and a fixed frame plate (13) is arranged at the right end of the heat exchange fins (4). It is characterized in that it further includes: The connecting pipe (12). Connecting pipes (12) are arranged at the four corners of the right end of the fixed frame plate (13), and a bearing plate (14) is installed at the lower end of the fixed frame plate (13). A positioning rod (17) is arranged inside the fixed frame plate (13), and a threaded cap (18) is threadedly connected to the left end of the positioning rod (17) to play a role in disassembly; The support plate (6). It is arranged on the left side of the movable pressing plate (1), and a stable bottom plate (5) with an integrated structure is arranged at the lower end of the support plate (6). A threaded rod (11) is arranged at the upper end of the support plate (6), and a limiting rod (19) is threadedly connected to the inner part of the lower end of the support plate (6); The upper guide limiting plate (7). The upper guide limiting plate (7) is arranged above the heat exchange plate connection group (3).

2. The detachable plate heat exchanger with a low flow resistance structure according to claim 1, wherein: The upper guide limiting plate (7) further includes a limiting groove (8) opened at the upper end of the upper guide limiting plate (7), and an installation plate (9) fixed on the movable pressing plate (1) is arranged on the left side of the upper guide limiting plate (7), and a roller column (10) is rotatably connected to the inner end of the installation plate (9).

3. The detachable plate heat exchanger with a low flow resistance structure according to claim 1, characterized in that: The upper guide limiting plate (7) is connected to the roller column (10) in a sliding manner through the limiting groove (8). The longitudinal section of the upper guide limiting plate (7) is in a "king" - shaped structure, and the lower end of the upper guide limiting plate (7) is respectively snap - connected to the sealing gasket (2), the heat exchange plate connection group (3) and the heat exchange fins (4).

4. A detachable plate heat exchanger with a low flow resistance structure according to claim 1, characterized in that: The support plate (6) is fixedly connected to the upper guide limiting plate (7) through the threaded rod (11) to limit the upper guide limiting plate (7), and the threaded rod (11) at the upper end of the fixed frame plate (13) is connected to the upper guide limiting plate (7).

5. A detachable plate heat exchanger with a low flow resistance structure according to claim 1, characterized in that: The bearing plate (14) further includes a connecting rod (15) arranged inside the bearing plate (14), and a connecting ring (16) is installed on the outer surface of the connecting rod (15).

6. The detachable plate heat exchanger with a low flow resistance structure according to claim 1, characterized in that: The longitudinal section of the bearing plate (14) is in an "L" - shaped structure, and the bearing plate (14) is symmetrically arranged about the transverse axis of the movable pressing plate (1) before and after, and the connecting rod (15) in the movable pressing plate (1) is threadedly connected to the connecting ring (16).

7. A detachable plate heat exchanger provided with a low flow resistance structure according to claim 1, characterized in that: Inclined groove - like structures are arranged inside the sealing gasket (2) and the heat exchange fins (4), and the hole - like structures opened on the sealing gasket (2) and the heat exchange fins (4) are in line with the grooves on the movable pressing plate (1).

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