A high-efficiency energy-saving plate heat exchanger convenient to maintain

Abstract

The utility model relates to plate heat exchanger technical field discloses a kind of high-efficiency energy-saving plate heat exchanger convenient to maintain, T-shaped guide includes round table, rotating sleeve, T-shaped column, and the round table is fixed in the top center of heat exchange fin, and the rotating sleeve section is T-shaped structure, and the round table is rotatably installed in rotating sleeve, and the rotating sleeve top is fixed with T-shaped column, and the T-shaped column top end slidingly inserts T-shaped guide groove inside.The utility model is through the sliding fit structure of setting vertical guide groove and T-shaped guide groove, makes heat exchange fin keep sealed state, and the rotary connection of round table and rotating sleeve, so that heat exchange fin can rotate along vertical center line, so that operator can rotate heat exchange fin to vertical state one by one by special tool, directly complete high-pressure water gun flushing in heat exchanger frame, solve the technical problem that traditional plate heat exchanger must be completely disassembled heat exchange fin to be able to clean, shorten maintenance time.

Description

Technical Field

[0001] This utility model relates to the field of plate heat exchanger technology, and in particular to a high-efficiency and energy-saving plate heat exchanger that is easy to maintain. Background Technology

[0002] Plate heat exchangers, as a type of high-efficiency heat exchange equipment, are widely used in various fields such as chemical, power, and food processing due to their advantages of high heat transfer coefficient, compact structure, and small footprint. Their core working principle involves heat exchange through the flow of the medium between multiple horizontally stacked heat exchange plates. Adjacent heat exchange plates are sealed by sealing elements. Pressure is applied by a pressure plate sliding back and forth along the upper and lower guide rods to maintain the sealing performance and ensure no medium leakage.

[0003] In existing plate heat exchanger technology, the heat exchange plates of traditional plate heat exchangers can only move horizontally. Due to the angle limitation, it is impossible to rinse the heat exchanger. All heat exchange plates need to be disassembled for cleaning, which often consumes a lot of time and manpower, resulting in extremely low maintenance efficiency. Utility Model Content

[0004] The purpose of this invention is to provide a high-efficiency and energy-saving plate heat exchanger that is easy to maintain, and to solve the problems of inconvenient cleaning of heat exchange fins and low maintenance efficiency in the prior art.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A high-efficiency and energy-saving plate heat exchanger that is easy to maintain includes a frame plate. A lower guide rod and an upper guide rod are fixed to the bottom and top of the frame plate, respectively, in a front-to-back direction. A pressing plate that moves back and forth is installed on the lower and upper guide rods. Multiple heat exchange plates are horizontally stacked between the frame plate and the pressing plate. A vertical guide groove is formed on the top surface of the lower guide rod, and a T-shaped guide groove is formed on the bottom surface of the upper guide rod. A T-shaped guide is installed at the top center of each heat exchange plate, and a vertical guide post is fixed at the bottom center. The T-shaped guide slides into the T-shaped guide groove, and the guide post slides into the vertical guide groove. The T-shaped guide includes a frustum, a rotating sleeve, and a T-shaped post. The frustum is fixed to the top center of the heat exchange plate. The rotating sleeve has a T-shaped cross-section and is rotatably installed inside the rotating sleeve. A T-shaped post is fixed to the top of the rotating sleeve, and the top of the T-shaped post slides into the T-shaped guide groove.

[0006] Preferably, the rear end of the vertical guide groove has a vertical and communicating opening groove A, and the rear end of the T-shaped guide groove has a vertical and communicating opening groove B.

[0007] Preferably, the frame plate includes a hot fluid inlet, a hot fluid outlet, a cold fluid inlet, and a cold fluid outlet. The hot fluid inlet and the hot fluid outlet are connected by internal flow channels of the heat exchange plates, and the cold fluid inlet and the cold fluid outlet are also connected by internal flow channels of the heat exchange plates.

[0008] Preferably, the cold fluid inlet flange is connected to a tubular mixer, and the tubular mixer is provided with a descaling agent inlet.

[0009] Preferably, the cold fluid outlet flange is connected to a filter.

[0010] Preferably, multiple tightening screws are vertically connected between the frame plate and the pressure plate.

[0011] Preferably, a support guide rod is vertically fixed between the lower guide rod and the upper guide rod to enhance the stability of the overall structure of the equipment.

[0012] Preferably, a rapid propulsion device is installed between the clamping plate and the support guide rod.

[0013] Preferably, the rapid propulsion device includes an extrusion frame, guide rods, a central screw, a fixing sleeve, and a rotating wheel. The extrusion frame is a rectangular frame that is vertically attached to the outer side of the pressure plate. Two guide rods are vertically fixed on the extrusion frame, and the supporting guide rods have corresponding guide holes. The two guide rods are slidably connected along the two guide holes. A rotatable central screw is connected to the center of the extrusion frame through a bearing. A fixing sleeve is welded to the extrusion frame, and the central screw is threadedly connected to the fixing sleeve. A rotating wheel is fixed to the outer end of the fixing sleeve.

[0014] The advantages of this utility model compared with the prior art are as follows: 1. By setting a sliding fit structure between the vertical guide groove and the T-shaped guide groove, the heat exchange plate is kept in a sealed state. The rotational connection between the frustum and the rotating sleeve allows the heat exchange plate to rotate along the vertical center line. Operators can use special tools to rotate the heat exchange plate one by one to a vertical state and directly complete the high-pressure water gun cleaning inside the heat exchanger frame. This solves the technical problem that traditional plate heat exchangers must be completely disassembled for cleaning, thus shortening maintenance time. 2. The rapid propulsion device drives the central screw to rotate through the rotary wheel, which in turn moves the extrusion frame along the support guide rod, so that the pressure plate applies pressure to the heat exchange plate, thereby achieving rapid extrusion and sealing of the heat exchange plate, and making the tightening screw easier to adjust and position. 3. The tubular mixer allows descaling agent to be added through the descaling agent inlet. Combined with the filter, the flushing waste liquid is filtered in time. The descaling agent mixed with cold fluid can effectively remove the scale on the surface of the heat exchange plate. By regularly maintaining the rotating heat exchange plate, the two heat exchange surfaces of the heat exchange plate can be cleaned alternately, which significantly extends the cleaning cycle of the equipment by the high-pressure water gun. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the appearance structure of Embodiment 1 of this utility model; Figure 2 This is a cross-sectional view of the connection between the heat exchange plate and the lower and upper guide rods in Embodiment 1 of this utility model; Figure 3 This is Embodiment 1 of the present utility model. Figure 2 Enlarged view of A in the middle; Figure 4 This is a longitudinal sectional view of heat exchange plate 5 in Embodiment 1 of this utility model; Figure 5 This is a schematic diagram of the guide rod structure in Embodiment 1 of this utility model; Figure 6 This is a schematic diagram of the upper guide rod structure in Embodiment 1 of this utility model; Figure 7 This is a schematic diagram of the rapid propulsion device structure of Embodiment 1 of this utility model; Figure 8 This is a schematic diagram of the flow direction of the cold fluid and the hot fluid in Embodiment 1 of this utility model; Figure 9 This is a schematic diagram showing the structural positions of the tubular mixer and filter in Embodiment 2 of this utility model; Icons: 1. Frame plate; 11. Hot fluid inlet; 12. Hot fluid outlet; 13. Cold fluid inlet; 131. Tubular mixer; 132. Descaling agent inlet; 14. Cold fluid outlet; 141. Filter; 2. Lower guide rod; 21. Vertical guide groove; 22. Opening groove A; 3. Upper guide rod; 31. T-shaped guide groove; 32. Opening groove B; 4. Pressure plate; 5. Heat exchange plate; 51. T-shaped guide; 511. Frustum; 512. Rotating sleeve; 513. T-shaped column; 52. Guide column; 6. Tightening screw; 7. Supporting guide rod; 8. Rapid propulsion device; 81. Extrusion frame; 82. Guide rod; 83. Center screw; 84. Fixing screw sleeve; 85. Rotary wheel. Detailed Implementation

[0016] To make the objectives, methods, and advantages of the embodiments of this utility model clearer, the method solutions in the embodiments of this utility model are described clearly and completely. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0017] Example 1 like Figure 1-6As shown, a high-efficiency and energy-saving plate heat exchanger that is easy to maintain includes a frame plate 1. A lower guide rod 2 and an upper guide rod 3 are fixed to the bottom and top of the frame plate 1, respectively, in a front-to-back direction. A pressing plate 4 that moves back and forth is installed on the lower guide rod 2 and the upper guide rod 3. Multiple heat exchange plates 5 are horizontally stacked between the frame plate 1 and the pressing plate 4. A vertical guide groove 21 is opened on the top surface of the lower guide rod 2, and a T-shaped guide groove 31 is opened on the bottom surface of the upper guide rod 3. A T-shaped guide member 51 is installed at the center of the top of each heat exchange plate 5, and a vertical guide post 52 is fixed at the center of the bottom. The T-shaped guide member 51 is slidably engaged with the T-shaped guide groove 31, and the guide post 52 is slidably connected with the vertical guide groove 21. This allows the heat exchange plates 5 to move vertically along the guide groove and slide back and forth along the guide rod during assembly and disassembly, thereby achieving rapid positioning and separation, facilitating maintenance and replacement, and reducing the impact of assembly errors on sealing performance. The T-shaped guide member 51 includes a frustum 511, a rotating sleeve 512, and a T-shaped column 513. The frustum 511 is fixed to the top center of the heat exchange plate 5. The rotating sleeve 512 has a T-shaped cross-section. The frustum 511 is rotatably installed inside the rotating sleeve 512. The top of the rotating sleeve 512 is fixed with a T-shaped column 513. The top of the T-shaped column 513 is slidably embedded in the T-shaped guide groove 31.

[0018] Specifically, when it is necessary to clean the surface of the heat exchanger 5, there is no need to disassemble the heat exchanger 5. By rotating the rotating sleeve 512 around the frustum 511 fixed to the top of the heat exchanger 5 at multiple angles, a high-pressure water gun can be used to thoroughly clean all surfaces of the heat exchanger 5, greatly improving maintenance efficiency and solving the problem of cumbersome cleaning of traditional plate heat exchangers. It also effectively avoids the decline in heat exchange efficiency caused by dirt accumulation, ensuring that the heat exchanger always maintains high heat exchange efficiency and achieves continuous high efficiency and energy saving. It also reduces frequent disassembly and assembly, reducing wear on the heat exchanger 5 and seals, and extending the service life of components; at the same time, it avoids the decline in sealing performance caused by improper disassembly and assembly, further ensuring the long-term energy-saving operation of the equipment.

[0019] like Figure 5-6 As shown, the vertical guide groove 21 has a vertical and communicating opening groove A22 at its rear end, and the T-shaped guide groove 31 has a vertical and communicating opening groove B32 at its rear end. The opening grooves A22 and B32 provide vertical clearance space when disassembling the heat exchanger 5, allowing the guide post 52 and the T-shaped guide member 51 to smoothly disassemble from the vertical guide groove 21 and the T-shaped guide groove 31 respectively. This enables rapid disassembly and replacement of the heat exchanger 5, significantly reducing maintenance time and labor costs, and improving overall maintenance efficiency.

[0020] like Figure 8As shown, the frame plate 1 includes a hot fluid inlet 11, a hot fluid outlet 12, a cold fluid inlet 13, and a cold fluid outlet 14. Adjacent heat exchange plates 5 form a sealed fluid channel through a sealing strip. The hot fluid inlet 11 and the hot fluid outlet 12 are connected through the internal flow channel of the heat exchange plate 5, and the cold fluid inlet 13 and the cold fluid outlet 14 are also connected through the internal flow channel of the heat exchange plate 5.

[0021] Specifically, the hot and cold fluids flow in opposite directions within the staggered flow channels, achieving efficient heat exchange between them on the surface of the heat exchange plate 5. Since the sealing strips on the front and rear heat exchange surfaces of the heat exchange plate 5 are axially symmetrical along a central vertical line, rotating the heat exchange plate 5 180° along this line maintains the sealing fit of the sealing strips. This allows for the interchangeability of the hot and cold heat exchange surfaces of the heat exchange plate 5, enabling the sealing strips that are constantly on the hot heat exchange surface to alternate with those on the cold heat exchange surface. This avoids aging and deformation of a single sealing strip due to prolonged exposure to high temperature and pressure, effectively extending the service life of the sealing strips and further ensuring the overall sealing performance and operational stability of the heat exchanger.

[0022] like Figure 1 As shown, multiple tightening screws 6 are vertically connected between the frame plate 1 and the pressure plate 4. The tightening screws 6 are evenly distributed around the frame plate 1 and the pressure plate 4, and each tightening screw 6 is fitted with an adjusting nut. By rotating the adjusting nut, the clamping force of the pressure plate 4 on the heat exchange plate 5 can be precisely adjusted to ensure good sealing and uniform force between the heat exchange plates 5.

[0023] like Figure 1 As shown, a support guide rod 7 is vertically fixed between the lower guide rod 2 and the upper guide rod 3 to enhance the stability of the overall structure of the equipment.

[0024] like Figure 1 As shown, a rapid propulsion device 8 is installed between the clamping plate 4 and the support guide rod 7. This enables rapid compression and sealing of the heat exchange fins 5, facilitating subsequent adjustment and positioning of the tightening screw 6, and improving equipment installation and maintenance efficiency.

[0025] like Figure 7 As shown, the rapid propulsion device 8 includes an extrusion frame 81, guide rods 82, a central screw 83, a fixing sleeve 84, and a rotating wheel 85. The extrusion frame 81 is a rectangular frame that is vertically attached to the outer side of the pressure plate 4. Two guide rods 82 are vertically fixed on the extrusion frame 81, and the supporting guide rod 7 has corresponding guide holes. The two guide rods 82 are slidably connected along the two guide holes. The center of the extrusion frame 81 is connected to a rotatable central screw 83 through a bearing. A fixing sleeve 84 is welded to the extrusion frame 81, and the central screw 83 is threadedly connected to the fixing sleeve 84. A rotating wheel 85 is fixed to the outer end of the fixing sleeve 84.

[0026] Specifically, when it is necessary to quickly advance the pressure plate 4 to compress and seal the heat exchange plate 5, the operator only needs to rotate the rotating wheel 85. The rotating wheel 85 drives the central screw 83 to rotate within the fixed screw sleeve 84. The central screw 83 pushes the compression frame 81 forward along the guide rod 82. The compression frame 81 then pushes the pressure plate 4 towards the heat exchange plate 5, thereby achieving rapid compression and sealing of the heat exchange plate 5, making it easier to adjust and position the tightening screw 6. This rapid advancement device has a simple structure and is easy to operate, which can greatly shorten the equipment installation and maintenance time and improve work efficiency.

[0027] Example 2 To extend the cleaning cycle of the heat exchange surface of heat exchanger 5, improvements were made based on Example 1, such as... Figure 9 As shown, in this embodiment, the cold fluid inlet 13 is flanged and connected to a tubular mixer 131. The tubular mixer 131 is equipped with a descaling agent inlet 132, which is used to add a high-temperature resistant descaling agent. Since the hot fluid is mostly heating water or engine cooling water, the descaling agent may contaminate the entire heating water or engine cooling water system. Furthermore, the corrosion rate of acidic descaling agents increases by 3-5 times at high temperatures. Therefore, the descaling agent enters through the cold fluid inlet 13, pre-mixes with the cold fluid on the low-temperature side, and then enters the heat exchange area, avoiding direct contact with the high-temperature metal surface and significantly reducing the risk of corrosion.

[0028] During equipment operation, an appropriate amount of descaling agent can be added as needed through the descaling agent inlet 132 of the tubular mixer 131. The descaling agent enters the heat exchanger along with the cold fluid and comes into contact with the cold heat exchange surface of the heat exchange plate 5 during fluid flow, effectively dissolving and removing tiny dirt particles adhering to the cold heat exchange surface of the heat exchange plate 5, preventing the gradual accumulation of dirt from affecting heat exchange efficiency. Furthermore, the high-temperature environment on the heat exchange surface of the heat exchange plate 5 accelerates the scaling reaction, making it more prone to forming stubborn scale.

[0029] During maintenance, rotating each heat exchange plate 5 180° transforms the heat exchange surface containing more scale into a cold exchange surface. The scale on the surface of the heat exchange plate 5 can be effectively removed by the descaling agent mixed with cold fluid. By regularly rotating the heat exchange plate 5, the two heat exchange surfaces of the heat exchange plate 5 can be cleaned alternately, significantly extending the cleaning cycle of the equipment by the high-pressure water gun.

[0030] The cold fluid outlet 14 is flanged and connected to a filter 141. The filter 141 can effectively intercept impurity particles that may be carried in the cold fluid after descaling, preventing these impurities from re-entering the heat exchanger with the fluid circulation, thereby reducing equipment failure and maintenance costs caused by impurities.

[0031] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A high-efficiency and energy-saving plate heat exchanger that is easy to maintain, comprising a frame plate (1), wherein a lower guide rod (2) and an upper guide rod (3) in the front-rear direction are fixed to the bottom and top of the frame plate (1), respectively, and a pressing plate (4) that moves back and forth is installed on the lower guide rod (2) and the upper guide rod (3), and a plurality of heat exchange plates (5) are horizontally stacked between the frame plate (1) and the pressing plate (4), characterized in that, The lower guide rod (2) has a vertical guide groove (21) on its top surface, and the upper guide rod (3) has a T-shaped guide groove (31) on its bottom surface. A T-shaped guide (51) is installed at the top center of the heat exchange plate (5), and a vertical guide post (52) is fixed at the bottom center. The T-shaped guide (51) is slidably engaged with the T-shaped guide groove (31), and the guide post (52) is slidably connected with the vertical guide groove (21). The T-shaped guide (51) includes a frustum (511), a rotating sleeve (512), and a T-shaped column (513). The frustum (511) is fixed at the top center of the heat exchange plate (5). The rotating sleeve (512) has a T-shaped cross-section. The frustum (511) is rotatably installed inside the rotating sleeve (512). The top of the rotating sleeve (512) is fixed with a T-shaped column (513). The top of the T-shaped column (513) is slidably embedded in the T-shaped guide groove (31).

2. The easy-to-maintain, high-efficiency, energy-saving plate heat exchanger according to claim 1, characterized in that, The vertical guide groove (21) has a vertical and connected opening groove A (22) at its rear end, and the T-shaped guide groove (31) has a vertical and connected opening groove B (32) at its rear end.

3. The easy-to-maintain, high-efficiency, energy-saving plate heat exchanger according to claim 2, characterized in that, The frame plate (1) includes a hot fluid inlet (11), a hot fluid outlet (12), a cold fluid inlet (13), and a cold fluid outlet (14). The hot fluid inlet (11) and the hot fluid outlet (12) are connected through the internal flow channel of the heat exchange plate (5), and the cold fluid inlet (13) and the cold fluid outlet (14) are also connected through the internal flow channel of the heat exchange plate (5).

4. The easy-to-maintain, high-efficiency, energy-saving plate heat exchanger according to claim 3, characterized in that, The cold fluid inlet (13) is flanged and connected to a tubular mixer (131), which is provided with a descaling agent inlet (132).

5. The easy-to-maintain, high-efficiency, energy-saving plate heat exchanger according to claim 4, characterized in that, The cold fluid outlet (14) is flanged and connected to a filter (141).

6. The easy-to-maintain, high-efficiency, energy-saving plate heat exchanger according to claim 1, characterized in that, Multiple tightening screws (6) are vertically connected between the frame plate (1) and the pressure plate (4).

7. The easy-to-maintain, high-efficiency, energy-saving plate heat exchanger according to claim 1, characterized in that, A support guide rod (7) is vertically fixed between the lower guide rod (2) and the upper guide rod (3) to enhance the stability of the overall structure of the equipment.

8. The easy-to-maintain, high-efficiency, energy-saving plate heat exchanger according to claim 7, characterized in that, A rapid propulsion device (8) is installed between the clamping plate (4) and the support guide rod (7).

9. A high-efficiency, energy-saving plate heat exchanger that is easy to maintain according to claim 8, characterized in that, The rapid propulsion device (8) includes an extrusion frame (81), guide rods (82), a central screw (83), a fixing sleeve (84), and a rotating wheel (85). The extrusion frame (81) is a rectangular frame that is vertically attached to the outer side of the pressure plate (4). Two guide rods (82) are vertically fixed on the extrusion frame (81). The support guide rod (7) has a corresponding guide hole. The two guide rods (82) are slidably connected along the two guide holes. The center of the extrusion frame (81) is connected to a rotating central screw (83) through a bearing. A fixing sleeve (84) is welded on the extrusion frame (81). The central screw (83) is threadedly connected to the fixing sleeve (84). A rotating wheel (85) is fixed at the outer end of the fixing sleeve (84).

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