Plate heat exchanger convenient to disassemble and maintain

Abstract

The utility model belongs to the technical field of plate heat exchangers, and particularly relates to a plate heat exchanger convenient to disassemble and maintain, which comprises a fixed plate and heat exchange fins assembled on the inner side of the fixed plate, the surfaces of the fixed plate and the heat exchange fins are communicated and connected with a water inlet pipe and a water outlet pipe, and the interiors of the water inlet pipe and the water outlet pipe are connected with annular fixed blocks. Sliding grooves are formed in the inner wall of the water inlet pipe and the inner wall of the water outlet pipe, filter screens are connected to the interiors of the water inlet pipe and the water outlet pipe, and sliding blocks are connected to the outer side walls of the filter screens. When a cold heat exchange medium and a hot heat exchange medium flow in the pipeline, the filter screen can effectively isolate scale carried in the medium, and the scale is prevented from flowing into other connecting equipment along the connecting pipeline through the isolation effect of the filter screen, so that the influence of the scale on normal use of other equipment is effectively prevented. Impurities in the heat exchange medium are reduced, and the heat exchange efficiency is improved.

Description

Technical Field

[0001] This utility model belongs to the technical field of plate heat exchangers, specifically relating to a plate heat exchanger that is easy to disassemble and maintain. Background Technology

[0002] A plate heat exchanger consists of plate heat exchanger plates, a balance tank, and a hot water unit. Its basic structure includes gaskets, pressure plates (movable end plates and fixed end plates), and a frame (upper and lower guide rods, front support). Gaskets seal and guide the flow between the plates, separating cold and hot fluid channels. The cold and hot heat exchange media flow through their respective channels, exchanging heat with the separated plates to achieve the desired temperature. However, during the operation of a plate heat exchanger, scale easily forms on the inner walls of the pipes due to the flow of the cold and hot heat exchange media (i.e., water). When the plate heat exchanger is running, some of this scale may move with the water flow. If this scale-containing water enters the equipment connected to the plate heat exchanger, it will affect the normal operation of the equipment. Utility Model Content

[0003] The purpose of this invention is to provide a plate heat exchanger that is easy to disassemble and maintain, aiming to solve the problem in the prior art where, during the use of plate heat exchangers, scale easily forms on the inner wall of the pipes due to the flow of the cold and hot heat exchange medium (i.e., water). When the plate heat exchanger is running, some of the scale may move with the water flow. If this scale-containing water flows into the equipment connected to the plate heat exchanger, it will affect the normal operation of the equipment.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a plate heat exchanger that is easy to disassemble and maintain, comprising a fixed plate and heat exchange fins assembled on the inner side of the fixed plate, an inlet pipe and a drain pipe being connected through the surfaces of the fixed plate and the heat exchange fins, an annular fixing block being connected inside the inlet pipe and the drain pipe, a sliding groove being provided on the inner wall of the inlet pipe and the drain pipe, a filter screen being connected inside the inlet pipe and the drain pipe, a slider being connected to the outer wall of the filter screen, and positioning bolts being connected to the outer wall of the inlet pipe and the drain pipe.

[0005] As a preferred embodiment of this utility model of a plate heat exchanger that is easy to disassemble and maintain, the filter screen is made of metal, and the slider is connected to two sliders that are symmetrical about the center line of the filter screen.

[0006] As a preferred embodiment of this utility model of a plate heat exchanger that is easy to disassemble and maintain, the filter screen is slidably connected to the inlet pipe and the outlet pipe via a slider and a groove.

[0007] As a preferred embodiment of this utility model of a plate heat exchanger that is easy to disassemble and maintain, the positioning bolt passes through the outer wall of the inlet pipe and the outlet pipe and is threadedly connected to the slider.

[0008] As a preferred embodiment of the present invention, which is a plate heat exchanger that is easy to disassemble and maintain, a fan is provided on the outer wall of the fixed plate, a support block is installed on the outer wall of the fixed plate, a groove is formed on the surface of the support block, a bidirectional threaded rod is assembled inside the groove, a bearing is installed at one end of the bidirectional threaded rod, and a clamping block is threadedly connected to the surface of the bidirectional threaded rod.

[0009] As a preferred embodiment of this utility model of a plate heat exchanger that is easy to disassemble and maintain, the bidirectional threaded rod is rotatably connected to the support block via a bearing.

[0010] As a preferred embodiment of the plate heat exchanger of this utility model that is easy to disassemble and maintain, the fan is detachably and fixedly connected to the support block through a clamping block and a bidirectional threaded rod.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] This invention incorporates filter screens inside the inlet and outlet pipes. When the cold and hot heat exchange media flow through the pipes, the filter screens effectively isolate scale carried in the media. This isolation prevents scale from flowing into other connected equipment, thus effectively preventing scale from affecting the normal operation of other equipment. It also reduces impurities in the heat exchange media, improving heat exchange efficiency. The threaded connection between the positioning bolts and the slider allows for easy disassembly and replacement of clogged filter screens, improving maintenance convenience and reducing operational difficulty. Finally, the fan, assembled with a clamping block, a bidirectional threaded rod, and a support block, easily blows away dust from the heat exchange fins, preventing dust accumulation from affecting their normal operation. This reduces equipment wear caused by dust accumulation and extends the equipment's service life. Attached Figure Description

[0013] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0014] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the main body structure from the rear.

[0016] Figure 3 This is a schematic diagram of the cross-sectional structure of the water inlet pipe of this utility model;

[0017] Figure 4 This is a schematic diagram of the fan mounting structure of this utility model.

[0018] In the diagram: 1. Fixing plate; 2. Heat exchange fins; 3. Water inlet pipe; 4. Drain pipe; 5. Annular fixing block; 6. Filter screen; 7. Slider; 8. Slide groove; 9. Positioning bolt; 10. Fan; 11. Support block; 12. Two-way threaded rod; 13. Bearing; 14. Clamping block; 15. Groove. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Please see Figure 1-4 The present invention provides the following technical solution: a plate heat exchanger that is easy to disassemble and maintain, comprising a fixed plate 1 and heat exchange fins 2 assembled on the inner side of the fixed plate 1, an inlet pipe 3 and a drain pipe 4 being connected through the surfaces of the fixed plate 1 and the heat exchange fins 2, an annular fixing block 5 being connected inside the inlet pipe 3 and the drain pipe 4, a sliding groove 8 being provided on the inner wall of the inlet pipe 3 and the drain pipe 4, a filter screen 6 being connected inside the inlet pipe 3 and the drain pipe 4, a slider 7 being connected to the outer wall of the filter screen 6, and a positioning bolt 9 being connected to the outer wall of the inlet pipe 3 and the drain pipe 4.

[0021] In a preferred embodiment: the filter screen 6 is made of metal, and the slider 7 is connected to two sliders that are symmetrical about the center line of the filter screen 6.

[0022] In a preferred embodiment, the filter screen 6 is slidably connected to the water inlet pipe 3 and the drain pipe 4 via the slider 7 and the groove 8.

[0023] In a preferred embodiment: the positioning bolt 9 passes through the outer wall of the water inlet pipe 3 and the drain pipe 4 and is threadedly connected to the slider 7.

[0024] In this embodiment, the plate heat exchanger mainly consists of a fixed plate 1 and heat exchange fins 2. A connecting rod facilitates the disassembly and maintenance of the fixed plate 1 and the heat exchange fins 2. Furthermore, plate heat exchangers are a mature existing technology, and therefore will not be described in detail further.

[0025] During the long-term operation of a plate heat exchanger, the cold and hot heat exchange medium flowing in its pipes often carries scale. Both the inlet pipe 3 and the outlet pipe 4 are equipped with filter screens 6. These filter screens 6, through their isolation function, effectively block scale carried in the medium, preventing it from flowing into other equipment along the connecting pipes, thus avoiding interference with the normal operation of other equipment. This not only reduces the impurity content in the heat exchange medium but also significantly improves heat exchange efficiency.

[0026] The assembly process for filter screen 6 is simple and quick. First, manually align the slider 7 with the groove 8 and push it into place. Then, filter screen 6 fits tightly against the annular fixing block 5. At this point, remove the positioning bolt 9 and screw it in to easily complete the installation of filter screen 6. Conversely, when it is necessary to disassemble or replace a clogged filter screen 6, simply unscrew the positioning bolt 9 to release its fixing, and then remove filter screen 6 from inside the inlet pipe 3 and drain pipe 4. This design greatly improves the convenience of maintenance and reduces the difficulty of operation.

[0027] Example 2

[0028] Please see Figure 1-4 A fan 10 is provided on the outer side wall of the fixing plate 1, and a support block 11 is installed on the outer side wall of the fixing plate 1. A groove 15 is opened on the surface of the support block 11, and a bidirectional threaded rod 12 is assembled inside the groove 15. A bearing 13 is installed at one end of the bidirectional threaded rod 12, and a clamping block 14 is threadedly connected to the surface of the bidirectional threaded rod 12.

[0029] In a preferred embodiment, the bidirectional threaded rod 12 is rotatably connected to the support block 11 via the bearing 13.

[0030] In a preferred embodiment, the fan 10 is detachably and fixedly connected to the support block 11 via the clamping block 14 and the bidirectional threaded rod 12.

[0031] In this embodiment, when the plate heat exchanger is in use for an extended period, the fan 10 is manually powered on and started, and the generated airflow is directed directly at the top of the heat exchange fins 2. This effectively prevents dust accumulation on the heat exchange fins 2, ensuring that the normal operation of the heat exchange fins 2 is not affected, reducing equipment wear caused by dust accumulation, and thus extending the overall service life of the plate heat exchanger.

[0032] It is worth noting that although the dust on the top of the heat exchange fins 2 can be cleaned manually, this process usually requires stopping the plate heat exchanger to avoid interfering with the operators. However, the aforementioned airflow design successfully avoids the problem of having to shut down the machine due to manual cleaning, ensuring the continuous operation of the plate heat exchanger.

[0033] Furthermore, the fan 10 is fixed by manually rotating the bidirectional threaded rod 12, causing it to rotate along the inner ring of the bearing 13, which in turn drives the clamping block 14 to move along the threads on the surface of the bidirectional threaded rod 12. When the clamping blocks 14 come close to each other, the fan 10 is fixed. The fan 10 needs to be in close contact with the surface of the support block 11 when fixed.

[0034] Furthermore, the size of the clamping block 14 is perfectly matched with the groove 15. This design ensures that the clamping block 14 will not rotate with the bidirectional threaded rod 12 when it rotates, thus achieving stable movement of the clamping block 14.

[0035] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the 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 make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A plate heat exchanger that is easy to disassemble and maintain, comprising a fixed plate (1) and heat exchange fins (2) assembled on the inner side of the fixed plate (1), characterized in that: The surface of the fixed plate (1) and the heat exchange fins (2) is connected to the water inlet pipe (3) and the water outlet pipe (4), and the inside of the water inlet pipe (3) and the water outlet pipe (4) is connected to the annular fixed block (5). The inner walls of the water inlet pipe (3) and the drain pipe (4) are provided with grooves (8), the inside of the water inlet pipe (3) and the drain pipe (4) are connected with a filter screen (6), the outer wall of the filter screen (6) is connected with a slider (7), and the outer wall of the water inlet pipe (3) and the drain pipe (4) is connected with a positioning bolt (9).

2. A plate heat exchanger that is easy to disassemble and maintain according to claim 1, characterized in that: The filter screen (6) is made of metal, and the slider (7) is connected to two sliders that are symmetrical about the center line of the filter screen (6).

3. A plate heat exchanger that is easy to disassemble and maintain according to claim 1, characterized in that: The filter screen (6) is slidably connected to the inlet pipe (3) and the outlet pipe (4) via the slider (7) and the groove (8).

4. A plate heat exchanger that is easy to disassemble and maintain according to claim 1, characterized in that: The positioning bolt (9) passes through the outer wall of the water inlet pipe (3) and the drain pipe (4) and is threadedly connected to the slider (7).

5. A plate heat exchanger that is easy to disassemble and maintain according to claim 1, characterized in that: A fan (10) is provided on the outer wall of the fixing plate (1), and a support block (11) is installed on the outer wall of the fixing plate (1). A groove (15) is opened on the surface of the support block (11), and a bidirectional threaded rod (12) is assembled inside the groove (15). A bearing (13) is installed at one end of the bidirectional threaded rod (12), and a clamping block (14) is threadedly connected to the surface of the bidirectional threaded rod (12).

6. A plate heat exchanger that is easy to disassemble and maintain according to claim 5, characterized in that: The bidirectional threaded rod (12) is rotatably connected to the support block (11) via a bearing (13).

7. A plate heat exchanger that is easy to disassemble and maintain according to claim 5, characterized in that: The fan (10) is detachably and fixedly connected to the support block (11) via the clamping block (14) and the bidirectional threaded rod (12).

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