Gas-gas plate heat exchanger for waste gas heat recovery

Abstract

The utility model relates to the technical field of gas-gas plate heat exchangers, and discloses a waste gas heat recovery gas-gas plate heat exchanger which comprises an upper shell and a lower shell, a plurality of fixing plates are uniformly mounted on the outer surface of the upper shell, limiting holes are formed in the two ends of the bottom of each fixing plate, and a plurality of mounting seats are uniformly mounted on the outer side of the upper end of the lower shell; the number of the mounting seats is equal to that of the fixing plates, the mounting seats and the fixing plates correspond to each other, cavities are formed in the inner sides of the mounting seats, sliding seats are fixedly mounted at the bottoms of the inner sides of the cavities, two sliding blocks are slidably connected to the upper ends of the sliding seats, fixing blocks are fixedly mounted at the upper ends of the sliding blocks, and inserting rods are fixedly mounted on the inner sides of the two fixing blocks; according to the heat exchanger, the protective shell which can be detached and separated vertically is arranged on the outer side of the heat exchanger body and can enter the heat exchanger body for inspection and maintenance, the maintenance efficiency is improved, meanwhile, the upper shell and the lower shell are allowed to be rapidly detached and reassembled, and the installation time is shortened.

Description

Technical Field

[0001] The present application relates to the field of air-to-air plate heat exchanger technology, and in particular to an air-to-air plate heat exchanger for waste gas heat recovery. Background Art

[0002] Plate heat exchanger is a kind of high-efficiency heat exchanger made of a series of metal sheets with a certain corrugated shape. Thin rectangular channels are formed between various plates, and heat is exchanged through the plates. Plate heat exchanger is an ideal equipment for liquid-liquid and liquid-steam heat exchange. It has the characteristics of high heat exchange efficiency, small heat loss, compact and light structure, small footprint, wide application, long service life, etc. The gas-to-gas plate heat exchanger is a heat exchanger for realizing heat exchange between high-temperature gas and low-temperature gas;

[0003] In order to prevent heat loss and reduce the impact of noise on the surrounding environment, the air-to-air plate heat exchanger in the prior art is equipped with a shell on the outside of the heat exchanger. However, most of the existing air-to-air plate heat exchanger shells adopt a welded one-piece structure or a bolted fixing method. If the air-to-air plate heat exchanger is damaged and needs to be repaired and maintained, it is very inconvenient to disassemble and lacks applicability. Therefore, we urgently need to provide an air-to-air plate heat exchanger for exhaust gas heat recovery.

[0004] The above information disclosed in the background technology is only used to increase the understanding of the background technology of the present application, and therefore, it may include information that does not constitute the prior art known to ordinary technicians in the field. Utility Model Content

[0005] In order to solve the problem that if the air-to-air plate heat exchanger is damaged internally and needs to be repaired and maintained, it is inconvenient to disassemble and lacks applicability, the present application provides an air-to-air plate heat exchanger for waste gas heat recovery.

[0006] The present application provides an air-to-air plate heat exchanger for waste gas heat recovery, which adopts the following technical solution:

[0007] A gas-to-gas plate heat exchanger for waste gas heat recovery comprises an upper shell and a lower shell, a plurality of fixing plates are evenly installed on the outer surface of the upper shell, and limiting holes are provided at both ends of the bottom of the fixing plates, a plurality of mounting seats are evenly installed on the outer side of the upper end of the lower shell, and the number of the mounting seats and the fixing plates are equal and correspond to each other, a cavity is provided on the inner side of the mounting seat, a sliding seat is fixedly installed on the inner bottom of the cavity, the upper end of the sliding seat is slidably connected to two sliding blocks, a fixing block is fixedly installed on the upper end of the sliding block, and an insertion rod is fixedly installed on the inner side of the two fixing blocks, and the insertion rod is connected to the inner side of the limiting hole.

[0008] Preferably, the inner thread of the slider is connected with a double-headed adjusting screw, and one end of the double-headed adjusting screw is rotatably connected to the inner wall of the cavity.

[0009] Preferably, two U-shaped blocks are fixedly mounted on the side of the lower shell, and one end of the double-headed adjusting screw away from the cavity passes through the mounting seat and the U-shaped block and is connected to the first bevel gear.

[0010] Preferably, a hand wheel is provided on the surface of the U-shaped block, an inner end of the hand wheel passes through the U-shaped block and is connected to a second bevel gear, and the inner sides of the second bevel gears are respectively meshed and connected with the two first bevel gears.

[0011] Preferably, air inlet holes are provided on the sides of the upper shell and the lower shell, and the fixing plate is plug-connected inside the cavity.

[0012] Preferably, a heat exchanger body is provided inside the upper shell and the lower shell.

[0013] In summary, this application includes the following beneficial technical effects:

[0014] 1. The four fixing plates on the side of the upper shell are connected to the cavity on the inner side of the mounting seat, and the second bevel gear is driven to rotate when the hand wheel is turned. The meshing action of the second bevel gear and the first bevel gear drives the two double-headed adjusting screws to rotate, so that the fixed block drives the insertion rod to approach each other to the side of the fixed plate under the cooperation of the slider and the double-headed adjusting screw, clamping the fixed plate on the inner side of the cavity, and the insertion rod is connected to the inside of the limiting hole, so that the upper shell is fixed to the upper end of the lower shell. The protective shell when the upper and lower shells are detachable and separated is on the outside of the heat exchanger body, and the interior can be entered for inspection and maintenance, which improves the maintenance efficiency. At the same time, the upper shell and the lower shell allow for quick disassembly and reassembly, reducing the installation time;

[0015] 2. By arranging the upper shell and the lower shell on the outside of the heat exchanger body, the shell forms a tighter seal between the plates, reducing leakage and improving heat exchange efficiency, which can reduce the heat loss inside, and at the same time, slightly isolate the noise generated when the medium flows inside the plate heat exchanger, reducing environmental damage. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall installation structure of the embodiment of the application;

[0017] Figure 2 is a schematic diagram of the side structure of the lower shell of the embodiment of the application;

[0018] Figure 3 It is an application example Figure 2 A schematic diagram of the structure enlargement in the middle;

[0019] Figure 4 is a schematic diagram of the disassembly structure of the upper shell of the embodiment of the application;

[0020] Figure 5 It is an application example Figure 4 Enlarged schematic diagram of the structure at point B in the middle.

[0021] Explanation of the accompanying drawings: 1. Upper shell; 2. Lower shell; 3. Air inlet; 4. Fixing plate; 5. Limiting hole; 6. Mounting seat; 7. Cavity; 8. Sliding seat; 9. Sliding block; 10. Double-headed adjusting screw; 11. Fixing block; 12. Insert rod; 13. U-shaped block; 14. First bevel gear; 15. Hand wheel; 16. Second bevel gear; 17. Heat exchanger body. DETAILED DESCRIPTION

[0022] The following is combined with Figure 1-5 This application is described in further detail.

[0023] The present application embodiment discloses an air-to-air plate heat exchanger for waste gas heat recovery, referring to Figure 1-Figure 5 , including an upper shell 1 and a lower shell 2. By arranging the upper shell 1 and the lower shell 2 on the outer side of the heat exchanger body 17, the shell forms a tighter seal between the plates, reduces leakage and improves heat exchange efficiency, can reduce the heat loss inside, and at the same time, slightly isolate the noise generated when the medium flows inside the plate heat exchanger, reducing environmental damage. A plurality of fixing plates 4 are evenly installed on the outer surface of the upper shell 1, and limiting holes 5 are provided at both ends of the bottom of the fixing plates 4. A plurality of mounting seats 6 are evenly installed on the outer side of the upper end of the lower shell 2. The number of mounting seats 6 and fixing plates 4 is equal and corresponds to each other. When the upper shell 1 and the lower shell 2 are installed, the plurality of fixing plates 4 are respectively corresponding to the upper ends of the mounting seats 6. A cavity 7 is provided on the inner side of the mounting seat 6. When installing, the fixing plates 4 are inserted into the cavity 7 inside the inner side of the mounting seat 6. The cavity The inner bottom of each of the plates 7 is fixedly mounted with a slide seat 8, and the upper end of the slide seat 8 is slidably connected to two slide blocks 9. The cooperation between the slide seat 8 and the slide block 9 enhances the stability of the horizontal movement of the fixed block 11, and ensures that the insertion rod 12 can be smoothly connected to the inner side of the limiting hole 5. The upper end of the slide block 9 is fixedly mounted with a fixed block 11, and the inner sides of the two fixed blocks 11 are fixedly mounted with insertion rods 12, which are connected to the inner side of the limiting hole 5. When the insertion rod 12 is located inside the limiting hole, the upper shell 1 is locked to the upper end of the lower shell 2 through the cooperation of the fixing plate 4 and the insertion rod 12. By utilizing the protective shell on the outside of the heat exchanger body 17 when the upper and lower detachable shells are separated, the interior can be entered for inspection and maintenance, thereby improving the maintenance efficiency. At the same time, the upper shell 1 and the lower shell 2 allow quick disassembly and reassembly to reduce installation time.

[0024] Reference Figure 1-5The internal thread of the slider 9 is connected with a double-headed adjusting screw 10. When the double-headed adjusting screw 10 is driven by the first bevel gear 14 to rotate inside the cavity 7, the fixed block 11 is driven to drive the insertion rod 12 to approach each other to the side of the fixed plate 4 under the cooperation of the slider 9 and the double-headed adjusting screw 10, and the fixed plate 4 is clamped on the inner side of the cavity 7. One end of the double-headed adjusting screw 10 is rotatably connected to the inner wall of the cavity 7. Two U-shaped blocks 13 are fixedly installed on the side of the lower shell 2. The end of the double-headed adjusting screw 10 away from the cavity 7 passes through the mounting seat 6 and the U-shaped block 13 and is connected to the first bevel gear 14. A handwheel 15 is provided on the surface of the U-shaped block 13. The inner end of the handwheel 15 passes through the U-shaped block 13 and is connected The second bevel gear 16, the inner sides of which are respectively meshed with the two first bevel gears 14, when the hand wheel 15 is turned, the second bevel gear 16 is driven to rotate, because the meshing action of the second bevel gear 16 and the first bevel gear 14 drives the two double-headed adjusting screws 10 to rotate, the upper shell 1 and the lower shell 2 are provided with air inlet holes 3 on the sides, the air inlet holes 3 introduce fresh air or other gases, which can increase the heat exchange area and turbulence, thereby improving the heat exchange efficiency, and at the same time dilute the gas inside the heat exchanger body 17, reduce its temperature and concentration, thereby reducing the generation of harmful emissions, the fixing plate 4 is plugged and connected inside the cavity 7, and the heat exchanger body 17 is provided inside the upper shell 1 and the lower shell 2.

[0025] The implementation principle of the air-to-air plate heat exchanger for waste gas heat recovery in the embodiment of the present application is as follows: when the device is used to assemble the shell outside the heat exchanger body 17, the multiple fixing plates 4 on the outside of the upper shell 1 correspond to the upper ends of the mounting seat 6 respectively, and the fixing plates 4 are inserted into the cavity 7 opened on the inner side of the mounting seat 6. At this time, the hand wheel 15 is turned to drive the second bevel gear 16 to rotate. Because the meshing action of the second bevel gear 16 and the first bevel gear 14 drives the two double-headed adjusting screws 10 to rotate, the fixing block 11 drives the insertion rod 12 to be fixed under the cooperation of the slider 9 and the double-headed adjusting screw 10. The side parts of the plates 4 are close to each other, the fixing plate 4 is clamped on the inner side of the cavity 7, and the insertion rod 12 is connected to the inside of the limiting hole 5, thereby completing the installation of the upper shell 1. When the heat exchanger body 17 needs to be disassembled for maintenance, the hand wheel 15 and the second bevel gear 16 are driven to rotate in the opposite direction, so that the two double-headed adjusting screws 10 rotate in the opposite direction, so that the fixing blocks 11 at both ends of the fixing plate 4 are continuously moved away, and the insertion rod 12 is disengaged from the inside of the two limiting holes 5, so that the upper shell 1 can be easily disassembled. At this time, the heat exchanger body 17 will be exposed, and the staff can perform maintenance work.

[0026] Finally, a few points should be explained: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, which may refer to mechanical connection or electrical connection, or internal communication between two components, or direct connection. "upper", "lower", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may change;

[0027] Secondly: In the drawings of the embodiments disclosed in the present utility model, only the structures related to the embodiments disclosed in the present utility model are involved, and other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of the present utility model can be combined with each other;

[0028] Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present utility model should be included in the protection scope of the present utility model.

[0029] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. An air-to-air plate heat exchanger for waste gas heat recovery, comprising an upper shell (1) and a lower shell (2), characterized in that: A plurality of fixing plates (4) are evenly mounted on the outer surface of the upper shell (1), and both ends of the bottom of the fixing plates (4) are provided with limiting holes (5). A plurality of mounting seats (6) are evenly mounted on the outer side of the upper end of the lower shell (2), and the number of the mounting seats (6) and the fixing plates (4) is equal and corresponds to each other. A cavity (7) is arranged on the inner side of the mounting seat (6), and a sliding seat (8) is fixedly mounted on the inner bottom of the cavity (7). Two sliding blocks (9) are slidably connected to the upper end of the sliding seat (8), and a fixing block (11) is fixedly mounted on the upper end of the sliding block (9). An insert rod (12) is fixedly mounted on the inner side of the two fixing blocks (11), and the insert rod (12) is connected to the inner side of the limiting hole (5).

2. The air-to-air plate heat exchanger for waste gas heat recovery according to claim 1, characterized in that: The inner thread of the slider (9) is connected to a double-headed adjusting screw (10), and one end of the double-headed adjusting screw (10) is rotatably connected to the inner wall of the cavity (7).

3. The air-to-air plate heat exchanger for waste gas heat recovery according to claim 2, characterized in that: Two U-shaped blocks (13) are fixedly mounted on the side of the lower shell (2); one end of the double-headed adjusting screw (10) away from the cavity (7) passes through the mounting seat (6) and the U-shaped block (13) and is connected to a first bevel gear (14).

4. The air-to-air plate heat exchanger for waste gas heat recovery according to claim 3, characterized in that: A hand wheel (15) is provided on the surface of the U-shaped block (13); an inner end of the hand wheel (15) penetrates the U-shaped block (13) and is connected to a second bevel gear (16); the inner side of the second bevel gear (16) is respectively meshed and connected with the two first bevel gears (14).

5. The air-to-air plate heat exchanger for waste gas heat recovery according to claim 1, characterized in that: The sides of the upper shell (1) and the lower shell (2) are provided with air inlet holes (3), and the fixing plate (4) is plug-connected inside the cavity (7).

6. The air-to-air plate heat exchanger for waste gas heat recovery according to claim 1, characterized in that: A heat exchanger body (17) is provided inside the upper shell (1) and the lower shell (2).

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