Plate heat exchanger for gas-liquid heat exchange

Abstract

The utility model relates to the technical field of plate heat exchangers, in particular to a gas-liquid heat exchange plate heat exchanger which comprises a fixed end plate, a plurality of evenly-distributed plate pieces are arranged on the right portion of the fixed end plate, sealing gaskets are installed at the left ends of the plate pieces, and connecting plates are fixedly connected to the upper ends of the plate pieces. Two first positioning holes are formed in the outer wall of each connecting plate in a penetrating manner, and two second positioning holes are formed in the outer wall of the fixed end plate in a penetrating manner; the pressing plate and the sealing gaskets apply leftward pressure to the multiple plates till the multiple sealing gaskets tightly extrude the multiple plates and the right end of the fixing end plate, the position of the pressing plate is further fixed through the locking mechanism, finally, the two positioning rods can be pulled out, and installation of the multiple plates is completed. And the locking effect of the locking mechanism on the position of the pressing plate is relieved, so that the pressing plate and the sealing gasket move rightwards, then the multiple plates can be taken out, and the purposes of improving the disassembly and assembly efficiency and convenience when the plates are cleaned and maintained are further achieved.

Description

Technical Field

[0001] This utility model relates to the field of plate heat exchanger technology, specifically to a plate heat exchanger for gas-liquid heat exchange. Background Technology

[0002] The core component of a plate heat exchanger is a plate assembly consisting of a series of corrugated plates. These plates are arranged in parallel and separated by sealing gaskets, forming narrow flow channels. The corrugated shape of the plates not only increases the heat exchange area but also enhances the turbulence of the fluid, thereby improving the heat transfer effect. Plate heat exchangers are ideal devices for gas-liquid heat exchange. They feature high heat exchange efficiency, low heat loss, compact and lightweight structure, small footprint, wide application, and long service life.

[0003] During operation, hot and cold fluids enter the heat exchanger from opposite sides. The fluids flow alternately in the channels between the plates, with the hot fluid flowing over one side of the plate and the cold fluid over the opposite side of the adjacent plate. Heat is transferred from the hot fluid to the cold fluid through the metal walls of the plates, cooling the hot fluid and heating the cold fluid. Sealing gaskets play a crucial role in plate heat exchangers. Located between the plates, they effectively prevent the penetration and mixing of the hot and cold fluids.

[0004] In existing technologies, plates are often pressed together with several bolts and clamping plates to compress the plates and seal gaskets tightly, thereby improving the sealing performance of the heat exchanger. In addition to bolt fixing, adhesive and brazing fixing methods are also used. However, since the plates need to be cleaned and maintained regularly, the above methods are inefficient to disassemble and maintain, which is not conducive to cleaning and maintenance. Therefore, it is necessary to propose a plate heat exchanger for gas-liquid heat exchange to solve the above problems. Utility Model Content

[0005] The purpose of this utility model is to provide a plate heat exchanger for gas-liquid heat exchange, which has the characteristics of improving the efficiency and convenience of disassembly and assembly when cleaning and maintaining the plates.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a plate heat exchanger for gas-liquid heat exchange, comprising a fixed end plate, a plurality of evenly distributed plates arranged on the right side of the fixed end plate, sealing gaskets installed on the left ends of the plurality of plates, connecting plates fixedly connected to the upper ends of the plurality of plates, two first positioning holes penetrating through the outer walls of the plurality of connecting plates, two second positioning holes penetrating through the outer walls of the fixed end plate, a push plate arranged on the left side of the fixed end plate, and two positioning rods installed on the right end of the push plate, the two positioning rods respectively passing through the second positioning hole on the front side, the plurality of first positioning holes on the front side, and the second positioning hole on the rear side, and the plurality of first positioning holes on the rear side, and matching thereto;

[0007] A vertical plate is provided on the right side of the plurality of plates, and a connecting horizontal plate is fixedly connected between the fixed end plate and the vertical plate. A first screw is threaded through and connected to the outer wall of the vertical plate. A pressure plate is rotatably connected to the left end of the first screw, and a sealing gasket is installed on the left end of the pressure plate.

[0008] A locking mechanism is provided on the right side of the pressure plate.

[0009] To further fix the position of the pressure plate and release the locking of the pressure plate position, in a preferred embodiment of the gas-liquid heat exchanger of this utility model, the locking mechanism includes a through hole through the outer wall of the vertical plate, and a second screw that passes through the through hole is fixedly connected to the right end of the pressure plate. The outer wall of the second screw is threaded with two nuts, and the two nuts abut against the left and right ends of the vertical plate respectively.

[0010] To facilitate improved stability of the pressure plate movement, in a preferred embodiment of the gas-liquid heat exchanger of this invention, the right end of the pressure plate is fixedly connected to a sliding rod that penetrates the vertical plate and is slidably connected thereto.

[0011] To facilitate the insertion of the positioning rods into the second and first positioning holes, in a preferred embodiment of the gas-liquid heat exchanger of this invention, the right ends of both positioning rods are spherical.

[0012] To facilitate the rotation of the first screw, a handwheel is preferably fixedly connected to the right end of the first screw, which is a preferred gas-liquid heat exchanger of this utility model.

[0013] To prevent the nut on the right side from detaching from the outer wall of the second screw, a limiting plate is fixedly connected to the right end of the second screw, which is a preferred embodiment of the gas-liquid heat exchanger of this utility model.

[0014] To facilitate operation by staff, a handle is fixedly connected to the left end of the push plate in a preferred embodiment of the gas-liquid heat exchanger of this utility model.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] When installing multiple plates, one worker inserts two positioning rods into the two second positioning holes and pushes them to the right until their right ends extend a certain distance beyond the right side of the fixed end plate. Then, another worker fits the two first positioning holes 5 onto the outer walls of the two positioning rods 6. Because they match, the installation positions of one connecting plate 4, plate 2, and sealing gasket 3 are determined, and the sealing gasket 3 contacts the fixed end plate 1. The two positioning rods 6 are then pushed further to the right, and the installation positions of the other connecting plate 4, plate 2, and sealing gasket 3 are determined in the same way, ensuring that the sealing gasket 3 abuts against the plate 2 located to its left. By continuing the operation in this way, multiple plates 2 can be positioned. At this time, the connecting horizontal plate 19 supports multiple plates 2. Then, the first screw 10 is rotated, and the pressure plate 11 and the sealing gasket 12 apply leftward pressure to multiple plates 2 until multiple sealing gaskets 3 are pressed tightly against multiple plates 2 and the right end of the fixed end plate 1, thereby improving the overall sealing performance of the device. At the same time, the right end of the rightmost plate 2 is pressed tightly by the sealing gasket 12, thereby preventing fluid from leaking from the four corner holes of the rightmost plate 2. Then, the position of the pressure plate 11 is further fixed by the locking mechanism to prevent the first screw 10 and the handwheel 17 from rotating accidentally. Finally, the two positioning rods 6 can be pulled out to complete the installation of multiple plates 2.

[0017] When multiple plates 2 need to be disassembled, the locking mechanism needs to be released from the position of the pressure plate 11. Then, the first screw 10 is rotated in the opposite direction, which drives the pressure plate 11 and the sealing gasket 12 to move to the right. This allows multiple plates 2 to be removed, thereby improving the efficiency and convenience of disassembly and assembly when cleaning and maintaining the plates 2. Attached Figure Description

[0018] Figure 1 This is a front sectional view of the present invention.

[0019] Figure 2 This is a structural diagram of the connection at the fixed end plate of this utility model;

[0020] Figure 3 This is an external structural diagram of the connecting plate and the first positioning hole of this utility model;

[0021] Figure 4 This is a diagram showing the external structure of the pressure plate and sealing gasket of this utility model.

[0022] In the diagram: 1. Fixed end plate; 2. Plate; 3. Sealing gasket; 4. Connecting plate; 5. First positioning hole; 6. Positioning rod; 7. Second positioning hole; 8. Push plate; 9. Vertical plate; 10. First screw; 11. Pressure plate; 12. Sealing gasket; 13. Through hole; 14. Second screw; 15. Nut; 16. Slide rod; 17. Handwheel; 18. Handle; 19. Connecting horizontal plate. Detailed Implementation

[0023] Please see Figures 1 to 4 A plate heat exchanger for gas-liquid heat exchange includes a fixed end plate 1. Multiple evenly distributed plates 2 are arranged on the right side of the fixed end plate 1. Sealing gaskets 3 are installed on the left ends of the multiple plates 2. Connecting plates 4 are fixedly connected to the upper ends of the multiple plates 2. Two first positioning holes 5 are opened through the outer wall of the multiple connecting plates 4. Two second positioning holes 7 are opened through the outer wall of the fixed end plate 1. A push plate 8 is arranged on the left side of the fixed end plate 1. Two positioning rods 6 are installed on the right end of the push plate 8. The two positioning rods 6 pass through the second positioning hole 7 on the front side, the multiple first positioning holes 5 on the front side, and the second positioning hole 7 on the rear side and the multiple first positioning holes 5 on the rear side, respectively, and are matched with them.

[0024] A vertical plate 9 is provided on the right side of multiple plates 2. A connecting horizontal plate 19 is fixedly connected between the fixed end plate 1 and the vertical plate 9. A first screw 10 is threaded through and threaded to the outer wall of the vertical plate 9. A pressure plate 11 is rotatably connected to the left end of the first screw 10. A sealing gasket 12 is installed on the left end of the pressure plate 11.

[0025] A locking mechanism is provided on the right side of the pressure plate 11.

[0026] In this embodiment: when installing multiple plates 2, one worker inserts two positioning rods 6 into the two second positioning holes 7. Because they match, the positions of the two positioning rods 6 are determined. Then, the push plate 8 is pushed to the right, causing the two positioning rods 6 to move to the right until their right ends extend a certain distance beyond the right side of the fixed end plate 1. Another worker can then fit the two first positioning holes 5 onto the outer walls of the two positioning rods 6. Because they match, one of the connecting plates 4 and plate 2 can be installed. The installation position of the sealing gasket 3 is positioned and the sealing gasket 3 is brought into contact with the fixed end plate 1. Then, the two positioning rods 6 are pushed to move to the right a certain distance. The installation positions of the other connecting plate 4, plate 2 and sealing gasket 3 are positioned in the same way, and the sealing gasket 3 is brought into contact with the plate 2 located on its left. By continuing to operate in this way, multiple plates 2 can be positioned. At this time, the lower end of the plate 2 is in contact with the upper end of the connecting horizontal plate 19, thereby supporting multiple plates 2 and completing the positioning of multiple plates 2.

[0027] Then, the first screw 10 is rotated, which in turn drives the pressure plate 11 and the sealing gasket 12 to move to the left, thereby applying leftward pressure to the multiple plates 2 until the multiple sealing gaskets 3 are pressed tightly against the multiple plates 2 and the right end of the fixed end plate 1, thereby improving the overall sealing performance of the device. At the same time, the right end of the rightmost plate 2 is pressed tightly by the sealing gasket 12, thereby preventing fluid from leaking from the four corner holes of the rightmost plate 2. Then, the position of the pressure plate 11 is further fixed by the locking mechanism to prevent the first screw 10 and the handwheel 17 from rotating accidentally. Finally, the two positioning rods 6 can be pulled out to complete the installation of the multiple plates 2.

[0028] When multiple plates 2 need to be disassembled, the locking mechanism needs to be released from the position of the pressure plate 11. Then, the first screw 10 is rotated in the opposite direction, which drives the pressure plate 11 and the sealing gasket 12 to move to the right. This allows multiple plates 2 to be removed, thereby improving the efficiency and convenience of disassembly and assembly when cleaning and maintaining the plates 2.

[0029] As a technical optimization of this utility model, the locking mechanism includes a through hole 13 through the outer wall of the vertical plate 9, and a second screw 14 passing through the through hole 13 is fixedly connected to the right end of the pressure plate 11. Two nuts 15 are threadedly connected to the outer wall of the second screw 14, and the two nuts 15 abut against the left and right ends of the vertical plate 9 respectively.

[0030] In this embodiment: by rotating the two nuts 15 and bringing them closer together until the two nuts 15 are pressed tightly against the left and right ends of the vertical plate 9, the position of the pressure plate 11 can be further fixed.

[0031] By rotating the two nuts 15 and moving them to opposite positions, the locking of the pressure plate 11 can be released.

[0032] As a technical optimization of this utility model, the right end of the pressure plate 11 is fixedly connected to a slide rod 16 that passes through the vertical plate 9 and is slidably connected to it.

[0033] In this embodiment, a slide bar 16 is provided to improve the stability of the movement of the pressure plate 11.

[0034] As a technical optimization of this utility model, the right ends of both positioning rods 6 are spherical structures.

[0035] In this embodiment, by making the right ends of both positioning rods 6 spherical, it is easier to insert the positioning rods 6 into the interior of the second positioning hole 7 and the first positioning hole 5.

[0036] As a technical optimization of this utility model, a handwheel 17 is fixedly connected to the right end of the first screw 10.

[0037] In this embodiment, a handwheel 17 is provided to facilitate the rotation of the first screw 10.

[0038] As a technical optimization of this utility model, a limiting plate is fixedly connected to the right end of the second screw 14.

[0039] In this embodiment, a limiting plate is provided to prevent the nut 15 on the right side from detaching from the outer wall of the second screw 14.

[0040] As a technical optimization of this utility model, a handle 18 is fixedly connected to the left end of the push plate 8.

[0041] In this embodiment, a handle 18 is provided to facilitate operation by staff.

[0042] Working principle: When installing multiple plates 2, one worker inserts two positioning rods 6 into two second positioning holes 7. Because they match, the positions of the two positioning rods 6 are determined. Then, by pushing the push plate 8 to the right using handle 18, the two positioning rods 6 move to the right until their right ends extend a certain distance beyond the right side of the fixed end plate 1. Another worker can then fit the two first positioning holes 5 onto the outer walls of the two positioning rods 6. Because they match, one of the connecting plates 4 and the plate... Position the installation positions of plate 2 and sealing gasket 3, and make sealing gasket 3 contact with fixed end plate 1. Then push the two positioning rods 6 to continue to move to the right a certain distance. Then position the installation positions of another connecting plate 4, plate 2 and sealing gasket 3 in the same way, and make sealing gasket 3 abut against plate 2 located on its left. Continue to operate in this way to position multiple plates 2. At this time, the lower end of plate 2 contacts the upper end of connecting horizontal plate 19, thereby supporting multiple plates 2 and completing the positioning of multiple plates 2.

[0043] The first screw 10 is rotated via the handwheel 17, which in turn drives the pressure plate 11 and the sealing gasket 12 to move to the left, thereby applying leftward pressure to the multiple plates 2 until the multiple sealing gaskets 3 are pressed tightly against the multiple plates 2 and the right end of the fixed end plate 1, thereby improving the overall sealing performance of the device. At the same time, the right end of the rightmost plate 2 is pressed tightly by the sealing gasket 12, thereby preventing fluid leakage from the four corner holes of the rightmost plate 2. Then, the two nuts 15 are rotated and brought closer to each other until the two nuts 15 are pressed tightly against the left and right ends of the vertical plate 9, thereby further fixing the position of the pressure plate 11 and preventing the first screw 10 and the handwheel 17 from rotating accidentally. Finally, the two positioning rods 6 can be pulled out to complete the installation of the multiple plates 2.

[0044] When multiple plates 2 need to be disassembled, the two nuts 15 need to be rotated and moved to a certain position in opposite directions, thereby releasing the lock on the position of the pressure plate 11. Then, the first screw 10 is rotated in the opposite direction, which drives the pressure plate 11 and the sealing gasket 12 to move to the right, thereby removing multiple plates 2. This further improves the efficiency and convenience of disassembly and assembly when cleaning and maintaining the plates 2.

[0045] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A plate heat exchanger for gas-liquid heat exchange, comprising a fixed end plate (1), a plurality of uniformly distributed plate pieces (2) are arranged on the right side of the fixed end plate (1), and a sealing gasket (3) is arranged on the left end of each of the plurality of plate pieces (2), characterized in that: A connecting plate (4) is fixedly connected to the upper end of each of the multiple plates (2). Two first positioning holes (5) are opened through the outer wall of each of the multiple connecting plates (4). Two second positioning holes (7) are opened through the outer wall of the fixed end plate (1). A push plate (8) is provided on the left side of the fixed end plate (1). Two positioning rods (6) are installed on the right end of the push plate (8). The two positioning rods (6) pass through the second positioning hole (7) on the front side, the multiple first positioning holes (5) on the front side, the second positioning hole (7) on the rear side, and the multiple first positioning holes (5) on the rear side, respectively, and match them. A vertical plate (9) is provided on the right side of the plurality of plates (2). A connecting horizontal plate (19) is fixedly connected between the fixed end plate (1) and the vertical plate (9). A first screw (10) is threaded through and threaded to the outer wall of the vertical plate (9). A pressure plate (11) is rotatably connected to the left end of the first screw (10). A sealing gasket (12) is installed on the left end of the pressure plate (11). A locking mechanism is provided on the right side of the pressure plate (11).

2. A plate heat exchanger for gas-liquid heat exchange according to claim 1, characterized in that: The locking mechanism includes a through hole (13) through the outer wall of the vertical plate (9), and a second screw (14) through the through hole (13) is fixedly connected to the right end of the pressure plate (11). The outer wall of the second screw (14) is threaded with two nuts (15), and the two nuts (15) abut against the left and right ends of the vertical plate (9) respectively.

3. The plate heat exchanger of claim 1, wherein: The right end of the pressure plate (11) is fixedly connected to a slide rod (16) that passes through the vertical plate (9) and is slidably connected to it.

4. The plate heat exchanger of claim 1, wherein: The right ends of both positioning rods (6) are spherical.

5. The plate heat exchanger of claim 1, wherein: A handwheel (17) is fixedly connected to the right end of the first screw (10).

6. A plate heat exchanger of the type defined in claim 2, characterised in that: A limiting plate is fixedly connected to the right end of the second screw (14).

7. The plate heat exchanger of claim 1, wherein: A handle (18) is fixedly connected to the left end of the push plate (8).

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