A high-temperature flue gas heat exchanger

Abstract

The present invention is applicable to the technical field of flue gas waste heat utilization, and provides a high-temperature flue gas heat exchanger, which includes a heat exchange component, and a flue gas inlet component is fixed on the top of the heat exchange component; the heat exchange component includes a box body component, a water inlet component inserted inside the box body component, and a plurality of heat conduction components slidably arranged on the water inlet component. The flue gas inlet component includes a flue gas inlet component, a displacement component slidably arranged inside the flue gas inlet component, and a plugging component slidably arranged inside the flue gas inlet component. This high-temperature flue gas heat exchanger solves the technical problem that in the process of using the existing high-temperature flue gas heat exchanger, the heat exchange tubes and fins inside the device are mostly connected and fixed inside the high-temperature flue gas heat exchanger in a fixed connection manner, resulting in poor heat exchange effect and reducing the heat exchange effect of the waste heat in the flue gas. It achieves the technical effect of being able to accelerate the flow of flue gas inside the heat exchange box body, improve the heat exchange effect between a plurality of fins and the flue gas inside the heat exchange box body, and improve the heat exchange efficiency in the later stage.

Description

Technical Field

[0001] The present invention relates to the technical field of flue gas waste heat utilization, and more specifically, it relates to a high-temperature flue gas heat exchanger. Background Art

[0002] A high-temperature flue gas heat exchanger is a device specifically used to recover the waste heat carried by flue gas in industrial production or other processes. It usually consists of key components such as heat exchange tubes and fins. The heat exchange tubes are made of special materials, with good thermal conductivity and corrosion resistance, and can efficiently transfer heat. The fins are tightly connected to the heat exchange tubes, and their unique structural design greatly increases the contact area with the flue gas, effectively strengthening the heat exchange process.

[0003] Currently, there are many technical problems in the use of high-temperature flue gas heat exchangers on the market as follows:

[0004] During the use of existing high-temperature flue gas heat exchangers, the heat exchange tubes and fins inside the equipment are mostly connected and fixed inside the high-temperature flue gas heat exchanger in a fixed connection manner, resulting in poor heat exchange effect and reducing the heat exchange effect of the waste heat in the flue gas. Summary of the Invention

[0005] Aiming at the deficiencies of the existing technology, the purpose of the present invention is to provide a high-temperature flue gas heat exchanger that can accelerate the flow of flue gas inside the heat exchange box body, improve the heat exchange effect between several fins and the flue gas inside the heat exchange box body, and improve the heat exchange efficiency in the later stage.

[0006] To achieve the above purpose, the present invention provides the following technical solutions:

[0007] A high-temperature flue gas heat exchanger includes a heat exchange assembly, and a smoke inlet assembly is fixed on the top of the heat exchange assembly.

[0008] The heat exchange assembly includes a box body part, a water inlet part inserted inside the box body part, and several heat conduction parts slidably arranged on the water inlet part. The smoke inlet assembly includes a smoke inlet part, a displacement part slidably arranged inside the smoke inlet part, and a blocking part slidably arranged inside the smoke inlet part.

[0009] The box body part includes a heat exchange box body. Several water inlet pipes are communicated and arranged on one outer side surface of the heat exchange box body, and several water outlet pipes are communicated and arranged on the opposite outer side surface of the heat exchange box body.

[0010] The water inlet part includes two relatively arranged U-shaped plates, and several communicating pipes penetrating and fixedly sleeved and matched between the water inlet pipes and the water outlet pipes are fixedly arranged on one inner side surface of the two U-shaped plates.

[0011] The heat conducting member includes a heat exchange tube slidably arranged on the communicating pipe. A conical cover is fixed to the inner wall of the heat exchange tube, and a plurality of fins are fixed to the outer wall of the heat exchange tube. High-temperature resistant flexible sleeves are fixed to both ends of the heat exchange tube, and the inner walls of the two high-temperature resistant flexible sleeves are respectively fixedly connected to the outer walls of the two communicating pipes. An elastic spring is fixed inside one of the high-temperature resistant flexible sleeves at the end of the heat exchange tube, and the end of the elastic spring is fixedly connected to the end of the communicating pipe.

[0012] The present invention is further configured such that two symmetrically arranged guiding grooves are formed on the outer peripheral side surfaces of a plurality of the communicating pipes.

[0013] Two symmetrically arranged guiding rails are fixed to the inner wall of the heat exchange tube, and the two guiding rails are respectively slidably arranged in cooperation with the two guiding grooves.

[0014] The present invention is further configured such that the water inlet member further includes two symmetrically arranged sleeves. Two symmetrically arranged sliding rods are slidably arranged inside the sleeves. A circular baffle is fixed at the central position of the inner wall of the sleeve. First springs are fixed between the opposite end faces of the circular baffle and the two sliding rods. The opposite end faces of the two sliding rods are respectively fixedly connected to the opposite end faces of the two U-shaped plates.

[0015] Two symmetrically arranged first positioning cylinders are fixed to one outer side surface of the two U-shaped plates.

[0016] A plurality of second positioning cylinders are fixed to the inner bottom of the heat exchange box body, and the first positioning cylinders and the second positioning cylinders are fixedly connected by bolts.

[0017] The present invention is further configured such that a smoke inlet pipe is communicated with the outer top of the upper box body. Two symmetrically arranged side baffles are fixed to the outer top of the upper box body. One side of the two side baffles is communicated with the smoke inlet pipe, and a sealing cover plate is fixed to one side of the two side baffles.

[0018] The present invention is further configured such that an external thread cylinder is communicated with the outside of the smoke inlet pipe. An internal thread cylinder is threadedly connected to the outer wall of the external thread cylinder. A guiding pipe extending into the smoke inlet pipe is fixed to the inner top of the internal thread cylinder, and a vertical groove extending upward is formed at the bottom of the guiding pipe.

[0019] The displacement member includes a displacement rod slidably arranged inside the guiding pipe. A second spring located inside the guiding pipe is fixed between the displacement rod and the internal thread cylinder. A vertical rail slidably arranged inside the vertical groove is fixed to the circumferential side surface of the displacement rod.

[0020] The present invention is further configured such that a partition plate is fixed to the inner wall of the upper box body. A sliding groove is formed at the top of the partition plate. A smoke inlet is formed through the inner bottom of the sliding groove. Restricting grooves are formed on both inner side walls of the sliding groove.

[0021] The plugging member includes a sliding plate slidably disposed inside the chute. The opposite side surfaces of the sliding plate are slidably engaged with two limiting grooves. A plurality of third springs are fixed on one side of the sliding plate, and one side of each of the plurality of third springs is fixedly connected to one side of the chute. A rectangular opening is formed through the top of the sliding plate.

[0022] The present invention is further configured such that: a trapezoidal plate is fixed on the top of the sliding plate, and a limiting side plate is fixed on one side of the trapezoidal plate.

[0023] An extension rod is fixed at the end of the displacement rod, and a contact ball that fits against the inclined surface of the trapezoidal plate is fixed at the bottom of the extension rod.

[0024] The present invention is further configured such that: a dust filter screen is fixed on the inner wall of the smoke inlet pipe. A first hinge seat is fixed at the end of the inner wall of the smoke inlet pipe away from the dust filter screen. An articulated arm is hinged inside the first hinge seat. An arc-shaped expansion plate is fixed on one side surface of the articulated arm. A second hinge seat is fixed on the opposite side surface of the articulated arm. A reciprocating arm is hinged inside the second hinge seat. An articulated hole is formed through one side of the reciprocating arm.

[0025] A third hinge seat that is hinged to the articulated hole is fixed on one side of the vertical rail.

[0026] The present invention is further configured such that: L-shaped rotating rods are fixed on both opposite side surfaces of the arc-shaped expansion plate, and sliding rods are fixed between the two L-shaped rotating rods.

[0027] Two symmetric connecting blocks are fixed inside the smoke inlet pipe between the arc-shaped expansion plate and the dust filter screen. A rotating plate is rotatably fitted between the two connecting blocks through a rotating shaft. A knocking rod is fixed on the side surface of the rotating plate. A knocking ball is fixed at the end of the knocking rod. A U-shaped rotating plate that is slidably engaged with the sliding rod is fixed on the side surface of the rotating plate. An arc-shaped spring is fixed between the U-shaped rotating plate and the smoke inlet pipe.

[0028] A smoke outlet pipe is communicated and arranged at the bottom of the outer part of the heat exchange box.

[0029] The advantages of the present invention are as follows: 1. Through the intermittent water flow power of the water-cooling liquid, the present invention generates a pushing force on the conical cover fixedly connected to the inner wall of the heat exchange tube, so that the elastic spring fixedly connected between the heat exchange tube and the communicating pipe is intermittently and repeatedly compressed. Combining with the elastic force of the elastic spring, a plurality of fins arranged on the circumferential side surface of the heat exchange tube make reciprocating horizontal movements in the horizontal direction, accelerating the flow of the flue gas inside the heat exchange box, improving the heat exchange effect between the plurality of fins and the flue gas inside the heat exchange box, and improving the later heat exchange efficiency.

[0030] 2. After the flue gas passes through dust removal, the flowing flue gas generates a thrust on the arc-shaped expansion plate, causing the sliding rod to press and slide on the inner wall of the U-shaped rotating plate, driving the rotating plate fixed to the side of the U-shaped rotating plate to perform a hinged rotation of tilting upwards between the two connecting blocks, so that the knocking rod fixed to the side of the rotating plate and the knocking ball fixed to the end of the knocking rod synchronously perform an upward rotation. In this way, after a period of dust removal and heat exchange, the flowing process of the flue gas stops, and the compressed arc-shaped spring starts to reset, driving the knocking rod fixed to the side of the rotating plate and the knocking ball fixed to the end of the knocking rod to synchronously perform a downward rotation, repeatedly knocking on the dust filter screen, preventing the dust in the flue gas from clogging the filter holes on the dust filter screen after a long period of preliminary dust removal, preventing it from affecting the later flue gas dust removal and heat exchange process, and improving the later heat exchange effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 is a schematic structural diagram of a high-temperature flue gas heat exchanger according to the present invention.

[0032] Figure 2 is a schematic structural diagram of a heat exchange component according to the present invention.

[0033] Figure 3 is a schematic cross-sectional structural diagram of a flue gas inlet component according to the present invention.

[0034] Figure 4 is a schematic structural diagram of a box body component according to the present invention.

[0035] Figure 5 is a top view of the box body component according to the present invention.

[0036] Figure 6 is a schematic structural diagram of a water inlet component according to the present invention.

[0037] Figure 7 is a schematic cross-sectional structural diagram of the water inlet component according to the present invention.

[0038] Figure 8 is a schematic structural diagram of a heat conduction component according to the present invention.

[0039] Figure 9 is a schematic cross-sectional structural diagram of the heat conduction component according to the present invention.

[0040] Figure 10 is a schematic cross-sectional structural diagram of a flue gas inlet part according to the present invention.

[0041] Figure 11 is a schematic structural diagram of the flue gas inlet part according to the present invention.

[0042] Figure 12 According to the present invention Figure 10 front view.

[0043] Figure 13 is a schematic structural diagram of a displacement component according to the present invention.

[0044] Figure 14 This is a schematic structural view of the plugging member of the present invention.

[0045] In the figure: 1, heat exchange component; 2, smoke inlet component; 3, box body component; 4, water inlet component; 5, heat conducting component; 6, smoke inlet component; 7, displacement component; 8, plugging component; 301, heat exchange box body; 302, water inlet pipe; 303, water outlet pipe; 304, second positioning cylinder; 305, smoke outlet pipe; 401, U-shaped plate; 402, connecting pipe; 403, guide groove; 404, sleeve; 405, sliding rod; 406, round baffle; 407, first spring; 408, first positioning cylinder; 501, heat exchange pipe; 502, conical cover; 503, fin; 504, high temperature resistant flexible sleeve; 505, elastic spring; 506, guide rail; 601, upper box body; 602, smoke inlet pipe; 603, side baffle; 604, sealing cover plate; 605, external thread cylinder; 606, internal thread cylinder; 607, guide pipe; 608, vertical groove; 609, partition plate; 610, chute; 611, smoke inlet; 612, limiting groove; 613, dust filter screen; 614, first hinge seat; 615, hinge arm; 616, arc expansion plate; 617, second hinge seat; 618, reciprocating arm; 619, hinge hole; 620, L-shaped rotating rod; 621, sliding rod; 622, connecting block; 623, rotating plate; 624, knocking rod; 625, knocking ball; 626, U-shaped rotating plate; 627, arc spring; 701, displacement rod; 702, second spring; 703, vertical rail; 704, extension rod; 705, contact ball; 706, third hinge seat; 801, sliding plate; 802, third spring; 803, rectangular opening; 804, trapezoidal plate; 805, limiting side plate. Specific embodiments

[0046] It should be noted that, without conflict, the embodiments in this application and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the drawings and in combination with the embodiments.

[0047] It should be pointed out that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by those of ordinary skill in the technical field to which this application belongs.

[0048] In the present invention, without contrary description, the orientations such as "upper, lower" are usually in the directions shown in the drawings, or in the vertical, perpendicular or gravitational directions; similarly, for the convenience of understanding and description, "left, right" are usually left and right as shown in the drawings; "inside, outside" refer to the inside and outside relative to the contours of the respective components, but the above orientation terms do not limit the present invention.

[0049] Example 1, please refer toFigure 1-14 , the present invention provides the following technical solutions:

[0050] A high-temperature flue gas heat exchanger. Specifically, it includes a heat exchange assembly 1, and a smoke inlet assembly 2 is fixed on the top of the heat exchange assembly 1; the heat exchange assembly 1 includes a box body part 3, a water inlet part 4 inserted inside the box body part 3, and a number of heat conduction parts 5 slidably arranged on the water inlet part 4. The smoke inlet assembly 2 includes a smoke inlet part 6, a displacement part 7 slidably arranged inside the smoke inlet part 6, and a plugging part 8 slidably arranged inside the smoke inlet part 6; the box body part 3 includes a heat exchange box body 301, a number of water inlet pipes 302 are connected and arranged on one outer side surface of the heat exchange box body 301, and a number of water outlet pipes 303 are connected and arranged on the opposite outer side surface of the heat exchange box body 301; the water inlet part 4 includes two U-shaped plates 401 arranged oppositely, and a number of connecting pipes 402 penetrating and fixedly sleeved and matched between the water inlet pipes 302 and the water outlet pipes 303 are fixedly arranged on the opposite inner side surfaces of the two U-shaped plates 401; the heat conduction part 5 includes a heat exchange pipe 501 slidably arranged on the connecting pipe 402, a conical cover 502 is fixed on the inner wall of the heat exchange pipe 501, a number of fins 503 are fixed on the outer wall of the heat exchange pipe 501, high-temperature resistant flexible sleeves 504 are fixed at both ends of the heat exchange pipe 501, the inner walls of the two high-temperature resistant flexible sleeves 504 are respectively fixedly connected with the outer walls of the two connecting pipes 402, and an elastic spring 505 is fixed at the end of the heat exchange pipe 501 inside one high-temperature resistant flexible sleeve 504, and the end of the elastic spring 505 is fixedly connected with the end of the connecting pipe 402.

[0051] The specific application of the first embodiment is as follows: During the heat exchange process of this heat exchanger in the later stage, the external water-cooling liquid enters the inside of a number of connecting pipes 402 intermittently through a liquid pumping method of a water pump (the liquid pumping method of the water pump is pulse control of the water pump, and the elastic spring 505 matches the impact force of the water pump pulse control). Then, it enters the inside of the heat exchange pipe 501 to exchange heat with the water-cooling liquid, absorbing heat from the flue gas inside the heat exchange box body 301. After absorbing heat, the water-cooling liquid together with the heat in the flue gas is discharged from a number of outlet pipes 303 for later use. During the entire heat exchange process, through the intermittent water flow power of the water-cooling liquid, a pushing force is generated on the conical cover 502 fixedly connected to the inner wall of the heat exchange pipe 501, causing the elastic spring 505 fixedly connected between the heat exchange pipe 501 and the connecting pipe 402 to be intermittently and repeatedly compressed. Combining with the elastic force of the elastic spring 505, the heat exchange pipe 501 makes a reciprocating horizontal movement in the horizontal direction between a set of relatively arranged connecting pipes 402. Furthermore, a number of fins 503 provided on the circumferential side of the heat exchange pipe 501 make a reciprocating horizontal movement in the horizontal direction. Through the horizontal reciprocating movement process of a number of fins 503 provided on the circumferential side of the heat exchange pipe 501, the flow of the flue gas inside the heat exchange box body 301 is accelerated, improving the heat exchange effect between a number of fins 503 and the flue gas inside the heat exchange box body 301, and improving the heat exchange efficiency in the later stage.

[0052] Embodiment 2. Please refer to Figure 1-14 , on the basis of Embodiment 1, the following improvements are made in Embodiment 2. Specifically, two symmetrically arranged guide grooves 403 are provided on the outer circumferential side of a number of connecting pipes 402; two symmetrically arranged guide rails 506 are fixed on the inner wall of the heat exchange pipe 501, and the two guide rails 506 are respectively slidably arranged in cooperation with the two guide grooves 403; the water inlet member 4 further includes two symmetrically arranged sleeves 404. Two symmetrically arranged sliding rods 405 are slidably arranged on the inner wall of the sleeve 404. A circular baffle 406 is fixed at the central position of the inner wall of the sleeve 404. A first spring 407 is fixed between the opposite end faces of the circular baffle 406 and the two sliding rods 405. The opposite end faces of the two sliding rods 405 are respectively fixedly connected to the opposite end faces of the two U-shaped plates 401; two symmetrically arranged first positioning cylinders 408 are fixed on one outer side of the two U-shaped plates 401; a number of second positioning cylinders 304 are fixed on the inner bottom of the heat exchange box body 301, and the first positioning cylinders 408 and the second positioning cylinders 304 are fixedly connected by bolts; the flue gas inlet member 6 includes an upper box body 601 fixedly installed on the heat exchange box body 301. A flue gas inlet pipe 602 is communicated with the outer top of the upper box body 601. Two symmetrically arranged side baffles 603 are fixed on the outer top of the upper box body 601. One side of the two side baffles 603 is communicated with the flue gas inlet pipe 602, and a sealing cover plate 604 is fixed on one side of the two side baffles 603.

[0053] The specific application of the second embodiment is as follows: during the heat exchange process, through the sliding cooperation between the two guide rails 506 and the two guide grooves 403 respectively, when the water-cooling liquid is later heat-exchanged, the heat exchange tube 501 can only move horizontally between the two oppositely arranged communicating pipes 402, avoiding the circumferential rotation of the heat exchange tube 501 between the two oppositely arranged communicating pipes 402 due to the flow of flue gas and preventing it from affecting the subsequent heat exchange process;

[0054] Before the heat exchange of the water-cooling liquid, the entire water inlet part 4 and several heat-conducting parts 5 slidably arranged inside the water inlet part 4 are synchronously placed inside the heat exchange box body 301. Then, inside the heat exchange box body 301, the two oppositely arranged U-shaped plates 401 are pushed, so that the first spring 407 is compressed, driving the two U-shaped plates 401 to move linearly closer to each other on the opposite end faces of the sleeve 404 until the opposite end faces of the two groups of oppositely arranged communicating pipes 402 and the opposite end faces of the water inlet pipe 302 and the water outlet pipe 303 are coaxial. Then, stop pushing the two oppositely arranged U-shaped plates 401, and thereby drive the two groups of oppositely arranged communicating pipes 402 to be respectively inserted and sleeved on several oppositely arranged water inlet pipes 302 and water outlet pipes 303 through the elastic force of the compressed first spring 407, so as to complete the installation and positioning between the water inlet part 4 and several heat-conducting parts 5 slidably arranged inside the water inlet part 4 and the heat exchange box body 301, so as to carry out the subsequent flue gas heat exchange process.

[0055] Embodiment Three, please refer to Figure 1-14, in the third embodiment, the following improvements are made on the basis of the first embodiment. Specifically, an external threaded cylinder 605 is connected and communicated outside the smoke inlet pipe 602. The outer wall of the external threaded cylinder 605 is threadedly connected with an internal threaded cylinder 606. At the inner top of the internal threaded cylinder 606, a guiding pipe 607 extending into the interior of the smoke inlet pipe 602 is fixed. A vertical groove 608 extending upward is opened at the bottom of the guiding pipe 607; the displacement member 7 includes a displacement rod 701 slidably arranged inside the guiding pipe 607. A second spring 702 located inside the guiding pipe 607 is fixed between the displacement rod 701 and the internal threaded cylinder 606. A vertical rail 703 slidably arranged inside the vertical groove 608 is fixed on the circumferential side of the displacement rod 701; a partition plate 609 is fixed on the inner wall of the upper box body 601. A chute 610 is opened at the top of the partition plate 609. A smoke inlet 611 is penetrated and opened at the inner bottom of the chute 610. Limiting grooves 612 are opened on both opposite inner side walls of the chute 610; the blocking member 8 includes a sliding plate 801 slidably arranged inside the chute 610. The opposite two side faces of the sliding plate 801 are slidably matched with the two limiting grooves 612. A plurality of third springs 802 are fixed on one side of the sliding plate 801. One sides of the plurality of third springs 802 are fixedly connected with one side of the chute 610. A rectangular opening 803 is penetrated and opened at the top of the sliding plate 801; a trapezoidal plate 804 is fixed on the top of the sliding plate 801. A limiting side plate 805 is fixed on one side of the trapezoidal plate 804; an extension rod 704 is fixed at the end of the displacement rod 701. A contact ball 705 that fits against the inclined surface of the trapezoidal plate 804 is fixed at the bottom of the extension rod 704; a dust filter screen 613 is fixed on the inner wall of the smoke inlet pipe 602. A first hinge seat 614 is fixed at the end of the inner wall of the smoke inlet pipe 602 away from the dust filter screen 613. An articulated arm 615 is hinged inside the first hinge seat 614. An arc-shaped expansion plate 616 is fixed on one side surface of the articulated arm 615. A second hinge seat 617 is fixed on the opposite side surface of the articulated arm 615. A reciprocating arm 618 is hinged inside the second hinge seat 617. An articulated hole 619 is penetrated and opened on one side of the reciprocating arm 618; a third hinge seat 706 hinged on the articulated hole 619 is fixed on one side of the vertical rail 703; L-shaped rotating rods 620 are fixed on both opposite side surfaces of the arc-shaped expansion plate 616. A sliding rod 621 is fixed between the two L-shaped rotating rods 620; two symmetric connecting blocks 622 are fixed inside the smoke inlet pipe 602 between the arc-shaped expansion plate 616 and the dust filter screen 613. A rotating plate 623 is rotatably matched between the two connecting blocks 622 through a rotating shaft. A knocking rod 624 is fixed on the side surface of the rotating plate 623. A knocking ball 625 is fixed at the end of the knocking rod 624. A U-shaped rotating plate 626 slidably matched with the sliding rod 621 is fixed on the side surface of the rotating plate 623. An arc-shaped spring 627 is fixed between the U-shaped rotating plate 626 and the smoke inlet pipe 602. An outlet pipe 305 is connected and communicated with the outer bottom of the heat exchange box body 301.

[0056] The specific application of the third embodiment is as follows: Before the heat exchanger is used, the entire heat exchanger is fixedly connected to the smoke outlet of the smoke generating device, so as to perform corresponding dust removal and heat exchange operations on the smoke in the later stage. During the later use process, the smoke enters the inside of the smoke inlet pipe 602 through the inlet end of the smoke inlet pipe 602, and through the preliminary dust removal and filtration function of the dust filter screen 613, the dust in the smoke is removed. After the dust in the smoke undergoes preliminary dust removal, the flowing smoke after dust removal will gradually generate a thrust on the arc-shaped expansion plate 616 (there are two inclined smoke guide pipes on the dust filter screen 613 that extend obliquely to the inner wall of the arc-shaped expansion plate 616 but have a certain distance from the inner wall of the arc-shaped expansion plate 616. The outlet end of the inclined smoke guide pipe is close to the lower position inside the arc-shaped expansion plate 616, which facilitates the smoke after preliminary dust removal to always flow at the lower position close to the inner wall of the arc-shaped expansion plate 616, so as to provide a thrust to the arc-shaped expansion plate 616 and prevent the smoke after preliminary filtration from affecting the rotation of the rotating plate 623), driving the articulated arm 615 articulated and fitted inside the first articulated seat 614 to rotate in an articulated downward pull manner, causing the articulated arm 615 articulated and fitted between the second articulated seat 617 and the third articulated seat 706 to rotate in an articulated downward pressure manner, driving the displacement rod 701 and the vertical rail 703 to move vertically downward inside the guide pipe 607 and the vertical groove 608 respectively. When the displacement rod 701 and the vertical rail 703 move vertically downward inside the guide pipe 607 and the vertical groove 608 respectively, the contact ball 705 fixed to the bottom of the extension rod 704 moves downward synchronously, and thereby generates a thrust on the trapezoidal plate 804, driving the sliding plate 801 fixed to the bottom of the trapezoidal plate 804 to move horizontally inside the sliding groove 610 and the two limiting grooves 612 (the opposite side surfaces of the sliding plate 801 slide in the two limiting grooves 612 respectively to prevent the sliding plate 801 from jittering up and down when moving horizontally inside the sliding groove 610), causing several third springs 802 fixedly connected between the sliding plate 801 and the sliding groove 610 to be gradually compressed, thereby driving the rectangular opening 803 formed through the top of the sliding plate 801 to gradually approach the smoke inlet 611, so that the smoke inlet 611 and the rectangular opening 803 are gradually staggered in a misaligned state, facilitating the smoke after preliminary dust removal to enter the heat exchange box body 301 through the rectangular opening 803 and the smoke inlet 611. At this time, several third springs 802 compressed between the sliding plate 801 and the sliding groove 610 increase the wind speed of the smoke discharged from the rectangular opening 803 and the smoke inlet 611 into the heat exchange box body 301 under the action of their own elastic force, so as to perform the later smoke heat exchange process;

[0057] After the above-mentioned dust removal, the flowing flue gas generates a thrust on the arc-shaped expansion plate 616. At the same time, the sliding rod 621 fixed between the two L-shaped rotating rods 620 will slide downward on the inner wall of the U-shaped rotating plate 626, thereby driving the rotating plate 623 fixed to the side of the U-shaped rotating plate 626 to perform a hinged rotation of tilting upward between the two connecting blocks 622, so that the knocking rod 624 fixed to the side of the rotating plate 623 and the knocking ball 625 fixed to the end of the knocking rod 624 synchronously perform a tilting upward rotation, and synchronously compress the arc-shaped spring 627 fixedly connected between the U-shaped rotating plate 626 and the smoke inlet pipe 602 (during the process of flue gas circulation, when the compression amount of the arc-shaped spring 627 reaches the maximum, the sliding rod 621 is always located inside the U-shaped rotating plate 626 and will not be separated from the inner wall of the U-shaped rotating plate 626). After a period of dust removal and heat exchange, the flow process of the flue gas stops (the stop of the flue gas flow is specifically controlled by a timer-controlled valve provided at the inlet end of the smoke inlet pipe 602 to ensure that the flue gas in the entire heat exchange process is not continuously introduced, realizing the periodic operation of the dust filter knocking 613. During the installation of the timer-controlled valve, one connecting flange of the timer-controlled valve is hermetically connected and fixed to the connecting flange at the inlet end of the smoke inlet pipe 602, and then the other connecting flange of the timer-controlled valve is hermetically connected and fixed to the connecting flange at the smoke outlet of the flue gas generating device. The timer-controlled valve here is a prior art and is made of high-temperature resistant material, not shown in the figure and not elaborated here). At this time, the compressed arc-shaped spring 627 starts to reset, driving the knocking rod 624 fixed to the side of the rotating plate 623 and the knocking ball 625 fixed to the end of the knocking rod 624 to synchronously perform a downward rotation, thereby repeatedly knocking the dust filter 613 through the elastic force of the arc-shaped spring 627 itself, avoiding the dust in the flue gas from clogging the filter holes on the dust filter 613 after a long period of preliminary dust removal, preventing it from affecting the later flue gas dust removal and heat exchange process, and improving the later heat exchange effect.

[0058] Obviously, the above-described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0059] It should be noted that the terms used here are only for describing specific embodiments, and are not intended to limit the exemplary embodiments according to the present application. As used here, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0060] It should be noted that the terms "first", "second", etc. in the description, claims and the above-mentioned drawings of this application are used to distinguish similar objects, and do not necessarily have to be used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances, so that the embodiments of this application described here can be implemented in an order other than those illustrated or described here.

[0061] The above are only the preferred embodiments of the present invention, and are not used to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

[0062] The above is only the preferred implementation manner of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions falling within the idea of the present invention belong to the protection scope of the present invention. It should be pointed out that for those of ordinary skill in the art, several improvements and refinements made without departing from the principle of the present invention should also be regarded as within the protection scope of the present invention.

Claims

1. A high-temperature flue gas heat exchanger, comprising a heat exchange component, characterized in that: The top of the heat exchange component is fixed with a smoke inlet component. The heat exchange component includes a box body component, a water inlet component inserted inside the box body component, and several heat conduction components slidably arranged on the water inlet component. The smoke inlet component includes a smoke inlet component, a displacement component slidably arranged inside the smoke inlet component, and a plugging component slidably arranged inside the smoke inlet component; The box body component includes a heat exchange box body. Several water inlet pipes are connected and arranged on one outer side surface of the heat exchange box body, and several water outlet pipes are connected and arranged on the opposite outer side surface of the heat exchange box body; The water inlet component includes two U-shaped plates arranged opposite to each other. Several communicating pipes sleeved and fixedly arranged between the water inlet pipes and the water outlet pipes are respectively and fixedly arranged on one inner side surface of the two U-shaped plates in a penetrating manner; The heat conduction component includes a heat exchange pipe slidably arranged on the communicating pipe. A conical cover is fixed on the inner wall of the heat exchange pipe, several fins are fixed on the outer wall of the heat exchange pipe, high-temperature resistant flexible sleeves are fixed at both ends of the heat exchange pipe, the inner walls of the two high-temperature resistant flexible sleeves are respectively fixedly connected with the outer walls of the two communicating pipes, an elastic spring is fixed inside one high-temperature resistant flexible sleeve at the end of the heat exchange pipe, and the end of the elastic spring is fixedly connected with the end of the communicating pipe; The smoke inlet component includes an upper box body fixedly installed with the heat exchange box body. A smoke inlet pipe is connected and arranged on the outer top of the upper box body. A dust filter screen is fixed on the inner wall of the smoke inlet pipe. A first hinge seat is fixed at the end of the inner wall of the smoke inlet pipe away from the dust filter screen. An articulated arm is hinged and matched inside the first hinge seat. An arc-shaped expansion plate is fixed on one side surface of the articulated arm. L-shaped rotating rods are fixed on the opposite two side surfaces of the arc-shaped expansion plate. A sliding rod is fixed between the two L-shaped rotating rods. Two symmetrical connecting blocks are fixed inside the smoke inlet pipe between the arc-shaped expansion plate and the dust filter screen. A rotating plate is rotatably matched between the two connecting blocks through a rotating shaft. A knocking rod is fixed on the side surface of the rotating plate. A knocking ball is fixed at the end of the knocking rod. A U-shaped rotating plate slidably matched with the sliding rod is fixed on the side surface of the rotating plate. An arc-shaped spring is fixed between the U-shaped rotating plate and the smoke inlet pipe; A smoke outlet pipe is connected and arranged at the outer bottom of the heat exchange box body.

2. A high-temperature flue gas heat exchanger according to claim 1, characterized in that: Two symmetrical guiding grooves are respectively arranged on the outer peripheral side surfaces of several communicating pipes; Two symmetrical guiding rails are fixed on the inner wall of the heat exchange pipe, and the two guiding rails are respectively slidably arranged and matched with the two guiding grooves.

3. A high-temperature flue gas heat exchanger according to claim 2, characterized in that: The water inlet component further includes two sleeves arranged symmetrically. Two sliding rods are slidably arranged inside the inner walls of the sleeves. A circular baffle is fixed at the central position of the inner wall of the sleeve. First springs are respectively fixed between the opposite two end surfaces of the circular baffle and the two sliding rods. The opposite end surfaces of the two sliding rods are respectively fixedly connected with the opposite end surfaces of the two U-shaped plates; Two symmetrical first positioning cylinders are respectively fixed on one outer side surface of the two U-shaped plates; Several second positioning cylinders are fixed at the inner bottom of the heat exchange box body, and the first positioning cylinders and the second positioning cylinders are fixedly connected by bolts.

4. A high-temperature flue gas heat exchanger according to claim 3, characterized in that: Two side baffles are fixed on the outer top of the upper box body. One side of the two side baffles is communicated with the smoke inlet pipe, and a sealing cover plate is fixed on one side of the two side baffles.

5. A high-temperature flue gas heat exchanger according to claim 4, characterized in that: An external thread cylinder is connected and arranged outside the smoke inlet pipe. An internal thread cylinder is threadedly connected to the outer wall of the external thread cylinder. A guiding pipe extending into the smoke inlet pipe is fixed at the inner top of the internal thread cylinder. A vertical groove extending upward is arranged at the bottom of the guiding pipe; The displacement component includes a displacement rod slidably arranged inside the guiding pipe. A second spring located inside the guiding pipe is fixed between the displacement rod and the internal thread cylinder. A vertical rail slidably arranged inside the vertical groove is fixed on the peripheral side surface of the displacement rod.

6. A high-temperature flue gas heat exchanger according to claim 5, characterized in that: A partition board is fixed to the inner wall of the upper box body. A chute is formed at the top of the partition board. A smoke inlet is formed through the bottom of the chute. Limiting grooves are formed on both opposite inner side walls of the chute. The blocking member includes a sliding plate slidably disposed inside the chute. The opposite side surfaces of the sliding plate are slidably engaged with the two limiting grooves. A plurality of third springs are fixed to one side of the sliding plate, and one side of each of the plurality of third springs is fixedly connected to one side of the chute. A rectangular opening is formed through the top of the sliding plate.

7. A high-temperature flue gas heat exchanger according to claim 6, characterized in that: A trapezoidal plate is fixed to the top of the sliding plate, and a limiting side plate is fixed to one side of the trapezoidal plate. An extension rod is fixed to the end of the displacement rod, and a contact ball that fits against the inclined surface of the trapezoidal plate is fixed to the bottom of the extension rod.

8. A high-temperature flue gas heat exchanger according to claim 7, characterized in that: A second hinge seat is fixed to the opposite side surface of the hinge arm. A reciprocating arm is hinged inside the second hinge seat, and a hinge hole is formed through one side of the reciprocating arm. A third hinge seat that is hinged to the hinge hole is fixed to one side of the vertical rail.

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