A fabric steam treatment device

Abstract

The present invention relates to the field of waste heat recovery, and in particular to a fabric steam treatment device, which comprises: a bracket, a first channel, a second channel and a third channel are provided on the bracket, the first channel is used to introduce air into the boiler, the second channel is used to discharge high-temperature flue gas, and the third channel is used to pass water; a heat exchange device, the heat exchange device is arranged in the bracket, the first channel and the second channel pass through the heat exchange device, the heat exchange device absorbs the heat of the high-temperature flue gas in the second channel, and the heat exchange device preheats the air in the first channel and the water in the third channel. The present invention utilizes the heat exchange device to recover the heat in the high-temperature flue gas for preheating air and water, the preheated air is passed into the boiler to assist combustion, and the preheated water can also be used for other aspects.

Description

Technical Field

[0001] The invention relates to the field of waste heat recovery, and in particular to a fabric steam treatment device. Background Art

[0002] The high-temperature flue gas generated by the boiler contains a large amount of heat energy. Direct discharge of the high-temperature flue gas will waste the waste heat therein. Utilizing the waste heat in the high-temperature flue gas is conducive to saving energy. For example, Chinese patent CN110425597B provides a stove flue gas waste heat recovery device. It includes: a flue, a steam box, a water tank, a water pipe, a float valve, a heat exchange plate, a cold water pipe, a hot water pipe, and a steam pipe; the steam box is cylindrical; the water tank is truncated and made of heat-conductive material; the flue is vertically arranged in the water tank and the two ends of the flue are respectively penetrated through the water tank, the steam box top plate and the bottom plate; the water pipe is installed at the lower part of the side wall of the water tank; the heat exchange plate is spiral; the steam pipe is arranged at the upper end of the steam box and the water tank and is respectively connected to the steam box and the water tank.

[0003] However, the stove flue gas waste heat recovery device provided by the above patent only uses the recovered flue gas waste heat for heating water, and the waste heat recovery effect is single. Summary of the invention

[0004] Based on this, it is necessary to provide a fabric steam treatment equipment that can use the waste heat of high-temperature flue gas to preheat air and water at the same time, thereby improving the utilization rate of high-temperature flue gas, in order to address the problem of the single use effect of the waste heat recovery device of the current flue gas.

[0005] The above purpose is achieved through the following technical solutions:

[0006] A fabric steam treatment device, comprising:

[0007] A bracket, wherein a first channel, a second channel and a third channel are provided on the bracket, wherein the first channel is used to introduce air into the boiler, the second channel is used to exhaust smoke, and the third channel is used to pass water;

[0008] A heat exchange device is arranged in the bracket, the first channel and the second channel pass through the heat exchange device, the heat exchange device absorbs the heat of the smoke in the second channel, and the heat exchange device preheats the air in the first channel and the water in the third channel.

[0009] In one of the embodiments, the heat exchange device includes a center wheel and a preheating mechanism, wherein the preheating mechanism is fixedly disposed in the center wheel, and the center wheel rotates so that the preheating mechanism is spaced between the first channel and the second channel.

[0010] In one of the embodiments, a water inlet, a water outlet and an eccentric cavity are provided on the bracket, and the water inlet, the water outlet and the eccentric cavity constitute the third channel, and the third channel surrounds the heat exchange device.

[0011] In one of the embodiments, the heat exchange device includes a connecting mechanism, which is slidably disposed through the center wheel and is slidably connected to the eccentric chamber.

[0012] In one embodiment, there are multiple connecting mechanisms, and every two adjacent connecting mechanisms and the center wheel separate the eccentric cavity into a containing cavity, the volume of the containing cavity is variable as the center wheel rotates, and a preheating cavity is provided on the center wheel, and the preheating cavity is connected with the containing cavity, and the number of the preheating cavities corresponds one to one to the number of the containing cavities.

[0013] In one embodiment, when the central wheel rotates, it absorbs water at the water inlet and discharges water at the water outlet.

[0014] In one embodiment, a cleaning mechanism is included, and the cleaning mechanism includes a scraper plate and a connecting rod mechanism. One end of the scraper plate is hinged to the central wheel, and the other end of the scraper plate is connected to the connecting mechanism through the connecting rod mechanism.

[0015] In one embodiment, the connecting mechanism is stretchable. In the first channel area, the connecting mechanism is stretched, and the connecting mechanism and the cleaning mechanism are always in a straight line; in the second channel area, the connecting mechanism pushes the connecting rod mechanism to open, so that the scraper plate slides to both sides of the preheating mechanism.

[0016] In one of the embodiments, a dust storage chamber is provided on the preheating mechanism, and the dust storage chamber is used to collect impurities.

[0017] In one embodiment, a partition is included, and the partition is used to separate the first channel and the second channel.

[0018] The beneficial effects of the present invention are:

[0019] The present invention relates to a fabric steam treatment device, which comprises: a bracket, a first channel, a second channel and a third channel are provided on the bracket, the first channel is used to introduce air into the boiler, the second channel is used to discharge high-temperature flue gas, and the third channel is used to pass water; a heat exchange device, the heat exchange device is arranged in the bracket, the first channel and the second channel pass through the heat exchange device, the heat exchange device absorbs the heat of the high-temperature flue gas in the second channel, and the heat exchange device preheats the air in the first channel and the water in the third channel. The present invention utilizes the heat exchange device to recover the heat in the high-temperature flue gas for preheating the air and water. The preheated air can be introduced into the boiler to assist combustion, and the preheated water can also be used for other purposes, thereby improving the waste heat utilization rate of the boiler flue gas. At the same time, the present invention is also provided with a cleaning mechanism to clean the heat conducting plate during the operation of the device to ensure that the heat transfer efficiency is not affected. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 An overall schematic diagram of a fabric steam treatment device provided by an embodiment of the present invention;

[0021] Figure 2 A partially disassembled diagram of a fabric steam treatment device provided by one embodiment of the present invention;

[0022] Figure 3 A partial top view of a heat exchange device of a fabric steam treatment device provided in one embodiment of the present invention;

[0023] Figure 4 for Figure 3 An enlarged schematic diagram of the structure at position A of a fabric steam treatment device provided in the embodiment;

[0024] Figure 5 for Figure 3 A schematic cross-sectional diagram of a fabric steam treatment device as viewed from above provided in the embodiment;

[0025] Figure 6 A schematic diagram of the structure of a center wheel of a fabric steam treatment device provided by one embodiment of the present invention;

[0026] Figure 7 for Figure 6 A schematic cross-sectional diagram of a right-side reference plane of a fabric steam treatment device provided in the embodiment;

[0027] Figure 8 A schematic diagram of the coordination of a preheating mechanism and a connecting mechanism of a fabric steam treatment device provided in one embodiment of the present invention;

[0028] Fig. 9 for Figure 8 A schematic cross-sectional diagram of a fabric steam treatment device as viewed from above provided in the embodiment;

[0029] Fig.10 for Fig. 9 An enlarged schematic diagram of the structure at position B of a fabric steam treatment device provided in the embodiment;

[0030] Fig.11 A schematic diagram of the structure of a dust scraper plate of a fabric steam treatment device provided in one embodiment of the present invention;

[0031] Fig.12 A schematic cross-sectional view of a reference plane of an eccentric cavity of a fabric steam treatment device provided by an embodiment of the present invention;

[0032] Fig.13 A schematic diagram of the working state of a cleaning mechanism of a fabric steam treatment device provided by one embodiment of the present invention;

[0033] Fig.14 A schematic diagram of the structure of a connecting mechanism of a fabric steam treatment device in a stretched state provided by one embodiment of the present invention.

[0034] in:

[0035] 100, bracket; 110, first channel; 120, second channel; 130, limit groove; 140, eccentric cavity; 150, water inlet; 160, water outlet;

[0036] 200, motor;

[0037] 300. Heat exchange device;

[0038] 310, center wheel; 311, preheating chamber; 312, positioning groove; 313, preheating groove;

[0039] 320, cleaning mechanism; 321, dust scraper; 322, connecting rod mechanism;

[0040] 330, preheating mechanism; 331, dust storage chamber; 332, heat conducting sheet;

[0041] 340, partition;

[0042] 350, connecting mechanism; 351, first connecting plate; 352, second connecting plate; 353, elastic member; 354, limiting block; 355, containing cavity;

[0043] 360. One-way door; 361. Shrapnel. DETAILED DESCRIPTION

[0044] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below through embodiments and in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0045] The serial numbers assigned to the components herein, such as "first", "second", etc., are only used to distinguish the objects described and do not have any order or technical meaning. The "connection" and "coupling" mentioned in this application, unless otherwise specified, include direct and indirect connections (couplings). In the description of the present invention, it should be understood that the orientation or position relationship indicated by the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc. are based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0046] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0047] like Figures 1 to 14 As shown, an embodiment of the present invention provides a preheating and utilization device for flue gas from a small boiler for textile processing, comprising a support 100 and a heat exchange device 300. The support 100 is provided with a first channel 110 for passing air, a second channel 120 for discharging high-temperature flue gas, and a third channel for passing water. The heat exchange device 300 is arranged in the support 100, and the first channel 110 and the second channel 120 pass through the heat exchange device 300. The heat exchange device 300 absorbs the heat of the high-temperature flue gas in the second channel 120 to preheat the air in the first channel 110 and the water in the third channel.

[0048] Specifically, the air in the first channel 110 is used to provide oxygen to the boiler, which has the effect of supporting combustion. However, the air temperature is lower than that of the gas in the boiler, which is not conducive to combustion. The air temperature after being preheated by the heat exchange device 300 is higher, which is conducive to improving the combustion efficiency. At the same time, the waste heat in the exhaust flue gas is used to reduce the energy loss when the boiler heats the air. After the cold water is preheated by the heat exchange device 300 in the third channel, it can be used for other purposes. The air preheating and the cold water preheating are carried out simultaneously, which greatly improves the utilization efficiency of the exhaust flue gas of the boiler.

[0049] Further, the heat exchange device 300 includes a central wheel 310 and a preheating mechanism 330. The central wheel 310 is rotatably disposed in the bracket 100. A plurality of preheating grooves 313 are evenly disposed on the central wheel 310. The preheating mechanism 330 is fixedly disposed in the preheating grooves 313. The preheating mechanism 330 corresponds to the preheating grooves 313 one by one. The preheating mechanism 330 rotates synchronously with the central wheel 310. The rotation of the central wheel 310 causes the preheating mechanism 330 to be alternately located in the first channel 110 and the second channel 120.

[0050] Specifically, the first channel 110 and the second channel 120 pass through the center wheel 310 and divide the center wheel 310 into two areas. The motor 200 drives the center wheel 310 to rotate, and the rotation of the center wheel 310 causes the preheating mechanism 330 to continuously pass through the first channel 110 and the second channel 120. The preheating mechanism 330 is provided with a heat conducting sheet 332. When the preheating mechanism 330 is in the second channel 120, the high-temperature flue gas continuously passes through the heat conducting sheet 332, so that the heat conducting sheet 332 stores a large amount of heat energy. When the preheating mechanism 330 is in the first channel 110, the air continuously passes through the heat conducting sheet 332, taking away the heat energy on the heat conducting sheet 332, and the air itself is preheated, and then passed into the boiler, which helps to improve the combustion efficiency.

[0051] Furthermore, the bracket 100 is provided with a water inlet 150, a water outlet 160 and an eccentric cavity 140, which form a third channel, and the eccentric cavity 140 is arranged around the heat exchange device 300. Cold water enters the eccentric cavity 140 from the water inlet 150, is preheated in the eccentric cavity 140, and is discharged from the water outlet 160 for other purposes.

[0052] Furthermore, the heat exchange device 300 includes a connection mechanism 350 , which can be slidably inserted into the center wheel 310 , and the connection mechanism 350 is slidably connected to the eccentric cavity 140 .

[0053] Specifically, a positioning groove 312 is provided on the outer periphery of the center wheel 310, and the connecting mechanism 350 slides through the positioning groove 312. The connecting mechanism 350 passes through the positioning groove 312 to form a protrusion in the preheating groove 313, and the heat conducting sheet 332 is distributed on both sides of the protrusion of the connecting mechanism 350. A limiting groove 130 is provided on the inner wall of the eccentric cavity 140, and a limiting block 354 is provided at one end of the connecting mechanism 350 close to the eccentric cavity 140. The limiting block 354 is slidably matched with the limiting groove 130, so that the connecting mechanism 350 and the center wheel 310 rotate synchronously.

[0054] Furthermore, every two adjacent connecting mechanisms 350 and the peripheral wall of the center wheel 310 separate the eccentric cavity 140 into a cavity 355. The number of cavities 355 is the same as the number of connecting mechanisms 350. In the counterclockwise direction, starting from the water inlet 150, the volume of the cavity 355 is from large to small, and then from small to large, wherein the volume of the cavity 355 at both ends perpendicular to the line connecting the water inlet 150 and the water outlet 160 is the smallest or largest. A preheating cavity 311 is also provided on the center wheel 310, and the preheating cavity 311 is communicated with the cavity 355, and the number of preheating cavities 311 corresponds to the number of cavities 355. As the center wheel 310 rotates, cold water enters the cavity 355 from the water inlet 150, and is discharged at the water outlet 160 after preheating.

[0055] Specifically, as the center wheel 310 rotates in the eccentric chamber 140, the connecting mechanism 350 slides radially relative to the center wheel 310. At the point where the eccentric chamber 140 is closest to the outer circumferential wall of the center wheel 310, the connecting mechanism 350 slides radially inward relative to the center wheel 310 to a limit value, and the volume of the cavity 355 is the smallest. At the point where the eccentric chamber 140 is farthest from the outer circumferential wall of the center wheel 310, the connecting mechanism 350 slides radially outward relative to the center wheel 310 to a limit value, and the volume of the cavity 355 is the largest.

[0056] More specifically, the connecting mechanism 350, the center wheel 310 and the eccentric chamber 140 form a structure equivalent to a vane pump. In the clockwise direction, the volume of the chamber 355 changes from large to small and then from small to large in the process of moving from the water outlet 160 to the water inlet 150, and cold water is sucked in at the water inlet 150. The chamber 355 is connected to the preheating chamber 311, and cold water flows into the preheating chamber 311. The preheating mechanism 330 transfers the heat energy stored in the heat conducting sheet 332 to the cold water inside the preheating chamber 311 through the surface of the preheating chamber 311, so that the cold water is preheated. As the center wheel 310 rotates, the volume of the chamber 355 changes from small to large and then from large to small in the process of moving from the water inlet 150 to the water outlet 160, and the preheated water is discharged at the water outlet 160.

[0057] Furthermore, it also includes a cleaning mechanism 320, which includes a scraper plate 321 and a connecting rod mechanism 322. One end of the scraper plate 321 is hinged to the center wheel 310, and the other end is hinged to the connecting mechanism 350 through the connecting rod mechanism 322. The scraper plate 321 can slide relative to the heat conductive sheet 332 to scrape off impurities on the heat conductive sheet 332 (high-temperature flue gas often contains some impurities. When the heat conductive sheet 332 is in contact with the high-temperature flue gas for a long time, the impurities will adhere to the surface of the heat conductive sheet 332, thereby reducing the heat transfer efficiency). The impurities on the heat conductive sheet 332 are cleaned by the cleaning mechanism 320 to ensure the heat transfer efficiency of the heat conductive sheet 332. The connecting mechanism 350 rotates with the center wheel 310 in the eccentric cavity 140, and the connecting mechanism 350 slides relative to the center wheel 310. The connection mechanism 350 slides through the connecting rod mechanism 322 to drive the scraper plate 321 to slide relative to the heat conducting plate 332 . The scraper plate 321 slides relative to the heat conducting plate 332 to scrape off impurities on the heat conducting plate 332 .

[0058] Furthermore, the connecting mechanism 350 is retractable. In the area of ​​the first channel 110, as the center wheel 310 rotates, the connecting mechanism 350 is stretched, and the connecting mechanism 350 and the cleaning mechanism 320 are always in the same straight line; in the area of ​​the second channel 120, as the center wheel 310 rotates, the connecting mechanism 350 slides radially inward relative to the center wheel 310, pushing the connecting rod mechanism 322 to open, so that the scraper plate 321 slides relative to the heat conducting plate 332, thereby scraping off impurities adhering to the heat conducting plate 332.

[0059] Specifically, the connecting mechanism 350 includes a first connecting plate 351 and a second connecting plate 352. The first connecting plate 351 is connected to the second connecting plate 352 through an elastic member 353. The elastic member 353 always resets the first connecting plate 351 or has a tendency to reset. The first connecting plate 351 is slidably connected to the eccentric cavity 140, and the second connecting plate 352 is hinged to the connecting rod mechanism 322. At the water inlet 150 and the water outlet 160, the connecting rod mechanism 322 and the dust scraping plate 321 are retracted to the limit value and are in the same straight line with the connecting mechanism 350.

[0060] More specifically, the eccentric cavity 140 has the same radius at the water inlet 150 and the water outlet 160. Based on this radius, in the area of ​​the first channel 110, the center wheel 310 drives the connecting mechanism 350 to rotate in the eccentric cavity 140, and the radius of the eccentric cavity 140 where the connecting mechanism 350 is located first increases and then recovers. When the radius of the eccentric cavity 140 where the connecting mechanism 350 is located gradually increases, the connecting mechanism 350 slides radially outward relative to the center wheel 310, and the sliding of the connecting mechanism 350 drives the connecting rod mechanism 322 to contract. However, since the connecting rod mechanism 322 has contracted to the limit value and cannot continue to contract, and the connecting mechanism 350 still has a tendency to slide outward, the connecting mechanism 350 begins to stretch. In this embodiment, the elastic member 353 is compressed, and the first connecting plate 351 is separated from the second connecting plate 352, so as to achieve the effect of stretching the connecting mechanism 350. When the radius of the eccentric cavity 140 where the connecting mechanism 350 is located gradually recovers, the connecting mechanism 350 slides inward relative to the center wheel 310, the elastic member 353 gradually recovers to its original length, and the first connecting plate 351 and the second connecting plate 352 fit together again.

[0061] In the area of ​​the second channel 120, the center wheel 310 drives the connecting mechanism 350 to rotate in the eccentric cavity 140, and the radius of the eccentric cavity 140 where the connecting mechanism 350 is located first decreases and then recovers. When the radius of the eccentric cavity 140 where the connecting mechanism 350 is located gradually decreases, the connecting mechanism 350 slides radially inward relative to the center wheel 310, and the sliding of the connecting mechanism 350 drives the connecting rod mechanism 322 to expand, and the connecting rod mechanism 322 drives the scraper plate 321 to expand, that is, the scraper plate 321 slides relative to the heat conducting plate 332. The scraper plate 321 scrapes off impurities on the heat conducting plate 332 during the sliding process. When the radius of the eccentric cavity 140 where the connecting mechanism 350 is located gradually recovers, the connecting mechanism 350 slides outward relative to the center wheel 310, and the connecting mechanism 350 drives the connecting rod mechanism 322 to contract, and the connecting rod mechanism 322 drives the scraper plate 321 to contract.

[0062] Furthermore, a dust storage chamber 331 is provided on the preheating mechanism 330, and a one-way door 360 is provided at the opening of the dust storage chamber 331 through a spring sheet 361. When the connecting mechanism 350 rotates to the farthest point from the eccentric chamber 140 to the outer circumferential wall of the center wheel 310, the connecting mechanism 350 slides radially inward relative to the center wheel 310 to a maximum value, so that the dust scraper plate 321 slides relative to the heat conducting plate 332 to a maximum value, and the dust scraper plate 321 slides to the one-way door 360, pushing open the spring sheet 361 to push the impurities into the dust storage chamber 331.

[0063] Furthermore, a partition 340 is included, and the partition 340 is used to separate the first channel 110 and the second channel 120. The air in the first channel 110 and the smoke in the second channel 120 move in opposite directions. Gas exchange will occur during the rotation of the heat exchange device 300. The partition 340 can reduce the frequency of gas exchange, so that a small amount of exchange of air and smoke does not affect the normal use of the device. At the same time, the partition 340 can also be used to provide support for the motor 200.

[0064] In combination with the above embodiments, the use principle and working process of the embodiments of the present invention are as follows:

[0065] The motor 200 is turned on to rotate the center wheel 310 , and the rotation of the center wheel 310 drives the preheating mechanism 330 to rotate, and at the same time drives the connecting mechanism 350 to slide along the limiting groove 130 in the eccentric cavity 140 .

[0066] Air is passed into the boiler along the first channel 110, and high-temperature flue gas is discharged from the boiler along the second channel 120. The first channel 110 and the second channel 120 are separated into two areas by the partition 340, so that only a small amount of gas exchange can occur between the first channel 110 and the second channel 120, which does not affect the normal use of the device. The center wheel 310, the preheating mechanism 330 and the connecting mechanism 350 alternate between the first channel 110 and the second channel 120. The preheating mechanism 330 is heated by the high-temperature flue gas in the second channel 120, so that the heat conducting plate 332 stores heat energy. When the preheating mechanism 330 rotates into the area of ​​the first channel 110, the air is preheated after passing through the heat conducting plate 332 storing heat energy. After the preheated air is passed into the boiler, it can reduce energy loss when assisting combustion.

[0067] The connecting mechanism 350, the center wheel 310 and the eccentric chamber 140 form a structure equivalent to a vane pump. In the clockwise direction, the volume of the chamber 355 changes from large to small and then from small to large in the process of moving from the water outlet 160 to the water inlet 150, and cold water is sucked in at the water inlet 150. The chamber 355 is connected to the preheating chamber 311, and cold water flows into the preheating chamber 311. The preheating mechanism 330 transfers the heat energy stored in the heat conducting sheet 332 to the cold water inside the preheating chamber 311 through the surface of the preheating chamber 311, so that the cold water is preheated. As the center wheel 310 rotates, the volume of the chamber 355 changes from small to large and then from large to small in the process of moving from the water inlet 150 to the water outlet 160, and the preheated water is discharged at the water outlet 160.

[0068] In the clockwise direction, during the process from the water outlet 160 to the water inlet 150, i.e., in the second channel 120, the movement of the cleaning mechanism 320 is divided into two processes. From the water outlet 160 to the closest point of the outer circumferential wall of the eccentric cavity 140 to the center wheel 310, the connecting mechanism 350 slides radially inward relative to the center wheel 310, pushing the connecting rod mechanism 322 to open, so that the dust scraper 321 is separated to both sides to scrape the impurities on the heat conducting sheet 332. At the closest point of the outer circumferential wall of the eccentric cavity 140 to the center wheel 310, the connecting mechanism 350 moves inward relative to the center wheel 310 to a limit value, at which time the dust scraper 321 contacts the side wall of the preheating mechanism 330, pushes open the spring 361 on the one-way door 360, and sends the impurities into the dust storage cavity 331. From the eccentric cavity 140 to the nearest part of the outer circumferential wall of the center wheel 310 to the water inlet 150, the connecting mechanism 350 slides radially outward relative to the center wheel 310, pulling the connecting rod mechanism 322 to contract, so that the two side scraping plates 321 move toward the center. At the water inlet 150, the two side scraping plates 321 overlap, the connecting rod mechanism 322 overlaps and is in the same straight line with the connecting mechanism 350.

[0069] During the process from the water inlet 150 to the water outlet 160, i.e., in the first channel 110, the position of the cleaning mechanism 320 relative to the preheating mechanism 330 does not change. From the water inlet 150 to the farthest point of the outer circumferential wall of the eccentric cavity 140 to the center wheel 310, the connecting mechanism 350 slides radially outward relative to the center wheel 310. Since the connecting mechanism 350, the connecting rod mechanism 322 and the scraper plate 321 are in the same straight line at this time, the connecting mechanism 350 cannot pull the connecting rod mechanism 322 to shrink, and the connecting mechanism 350 has a tendency to move outward, so the connecting mechanism 350 is extended as a whole. That is, the elastic member 353 is compressed, the first connecting plate 351 is separated from the second connecting plate 352, and the first connecting plate 351 slides outward relative to the second connecting plate 352, so that the connecting mechanism 350 is extended as a whole. At the farthest point from the eccentric cavity 140 to the outer circumferential wall of the center wheel 310, the overall extension of the connecting mechanism 350 reaches the limit value. From the eccentric cavity 140 to the farthest point of the outer circumferential wall of the center wheel 310 to the water outlet 160, the connecting mechanism 350 slides axially inward relative to the center wheel 310, the elastic member 353 is reset, and the first connecting plate 351 slides inward relative to the second connecting plate 352, so that the connecting mechanism 350 gradually returns to its initial length. At the water outlet 160, the first connecting plate 351 and the second connecting plate 352 are reattached, and the connecting mechanism 350 returns to its initial length. In the first channel 110, the movement of the connecting mechanism 350 does not affect the dust scraping plate 321, so that the air entering the boiler will not be mixed with dust.

[0070] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0071] The above-mentioned embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the present invention. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A fabric steam treatment device, characterized in that: include: A bracket, wherein a first channel, a second channel and a third channel are provided on the bracket, wherein the first channel is used to introduce air into the boiler, the second channel is used to exhaust smoke, and the third channel is used to pass water; A heat exchange device, the heat exchange device is arranged in the bracket, the first channel and the second channel pass through the heat exchange device, the heat exchange device absorbs the heat of the flue gas in the second channel, and the heat exchange device preheats the air in the first channel and the water in the third channel; the heat exchange device comprises a center wheel and a preheating mechanism, the preheating mechanism is fixedly arranged in the center wheel, and the center wheel rotates so that the preheating mechanism is alternately located in the first channel and the second channel; a heat conductive sheet is arranged on the preheating mechanism, and when the preheating mechanism is in the second channel, the high-temperature flue gas continuously passes through the heat conductive sheet, so that the heat conductive sheet stores heat energy; a water inlet, a water outlet and an eccentric cavity are arranged on the bracket, the water inlet, the water outlet and the eccentric cavity constitute the third channel, and the third channel surrounds the heat exchange device; The heat exchange device includes a connecting mechanism, which is slidably arranged on the center wheel and is slidably connected to the eccentric cavity; there are multiple connecting mechanisms, and every two adjacent connecting mechanisms and the center wheel divide the eccentric cavity into a volume cavity, and the volume of the volume cavity is variable as the center wheel rotates. A preheating cavity is provided on the center wheel, and the preheating cavity is connected to the volume cavity, and the number of preheating cavities corresponds to the number of volume cavities; when the center wheel rotates, water is absorbed at the water inlet and water is discharged at the water outlet; the cleaning mechanism also includes a scraper plate and a connecting rod mechanism, one end of the scraper plate is hinged to the center wheel, and the other end of the scraper plate is connected to the connecting mechanism through the connecting rod mechanism; the connecting mechanism is stretchable, and in the first channel area, the connecting mechanism is stretched, and the connecting mechanism and the cleaning mechanism are always in a straight line; The heat conducting plates are distributed on both sides of the protruding part of the connecting mechanism; in the second channel area, the connecting mechanism pushes the connecting rod mechanism to open, so that the dust scraping plate slides to both sides of the preheating mechanism; the preheating mechanism is provided with a dust storage chamber, and the dust storage chamber is used to collect impurities; A partition is included, and the partition is used to separate the first channel and the second channel.

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