A heat exchange device for heat exchange between different liquids

Abstract

The present invention provides a heat exchange device for heat exchange of different liquids. By arranging multiple heat exchange components, when it is necessary to change the temperature of the obtained medium and high temperature medium, different heat exchange components can be switched to perform the heat exchange process, thereby improving the scope of application; when dirt is generated on the tube wall of the inner cylinder or the outer cylinder, the driving component switches the initial position and the cleaning position of the inner cylinder and the outer cylinder, thereby switching the axis of the inner cylinder and the outer cylinder from coaxial to eccentric, so that the cleaning component abuts against the outer wall of the inner cylinder or the inner wall of the outer cylinder to remove scale, which is convenient for cleaning, ensuring the heat exchange efficiency and the continuous use of the heat exchange device.

Description

Technical Field

[0001] The present invention relates to a heat exchange device, in particular to a heat exchange device used for heat exchange between different liquids. Background Art

[0002] As core devices for thermal energy transfer, heat exchangers play a vital role in industrial production and energy utilization. Through efficient heat exchange processes, they achieve heat recovery, transfer, and distribution between different media, and are widely used in industries such as petrochemicals, power generation, environmental protection engineering, and refrigeration systems. For example, in the oil refining process, shell-and-tube heat exchangers significantly improve waste heat recovery efficiency through the interaction between the shell-side and tube-side fluids. In thermal power plants, they serve as key components of condensers or boiler feedwater preheaters, ensuring the stable operation of thermal circulation systems.

[0003] Currently, common heat exchange devices are generally coaxial sleeve type, that is, an outer tube is installed outside the inner tube, and low-temperature medium and high-temperature medium are introduced respectively. The low-temperature medium absorbs the heat of the high-temperature medium and becomes a medium-high temperature medium, thereby realizing the heat exchange process. However, when the temperature of the obtained medium-high temperature medium needs to be changed, the corresponding high-temperature medium or low-temperature medium cannot be adjusted; in addition, when the high-temperature medium and the low-temperature medium are exchanging heat, the temperature change can easily cause dirt to form on the wall of the heat exchange tube, reduce the heat exchange efficiency, affect the continuous use of the heat exchange device, and make subsequent cleaning inconvenient.

[0004] The information disclosed in the background technology section of the present invention is only intended to deepen the understanding of the general background technology of the present invention, and should not be regarded as an admission or any form of suggestion that the information constitutes the prior art already known to those skilled in the art. Summary of the Invention

[0005] Based on this, it is necessary to provide a heat exchange device for heat exchange between different liquids in order to address the problems existing in current heat exchange devices.

[0006] The above purpose is achieved through the following technical solutions:

[0007] A heat exchange device for heat exchange between different liquids, comprising:

[0008] Bracket;

[0009] a heat exchange assembly, wherein a plurality of heat exchange assemblies are arranged on the bracket at intervals, and the heat exchange assembly includes an inner cylinder and an outer cylinder which can rotate relative to each other, a first heat exchange channel being formed in the inner cylinder, and an external low-temperature medium or a high-temperature medium exchanges heat with the inner cylinder through the first heat exchange channel, and a second heat exchange channel is formed between the inner cylinder and the outer cylinder, and the inner cylinder and the outer cylinder exchange heat through the second heat exchange channel; a cleaning member is provided in the second heat exchange channel, and the inner cylinder or the outer cylinder can move relative to each other in the radial direction, and generate corresponding initial position and cleaning position before and after movement, when in the initial position, the inner cylinder and the outer cylinder are coaxially arranged, and when in the cleaning position, the axis of the inner cylinder and the axis of the outer cylinder are spaced apart and the cleaning member abuts against the outer wall of the inner cylinder or the inner wall of the outer cylinder;

[0010] The driving assembly is used to drive the inner cylinder and the outer cylinder to switch between the initial position and the cleaning position, so that the distance between the cleaning member and the inner cylinder or the outer cylinder changes.

[0011] In one embodiment, the driving assembly includes a driving wheel and a transmission belt. The driving wheel rotates and drives the inner cylinder or the outer cylinder to rotate through the transmission belt. The driving wheel can move radially along a preset trajectory and drive the inner cylinder or the outer cylinder to move radially through the transmission belt.

[0012] In one embodiment, the preset trajectory is a ring centered on the first axis.

[0013] In one embodiment, the preset trajectory is in the shape of a straight line segment.

[0014] In one embodiment, the preset trajectory is in the shape of an arc segment.

[0015] In one embodiment, the plurality of driving wheels are arranged at intervals in the circumferential direction around the second axis, and the plurality of driving wheels are arranged on the same side of the transmission belt and move radially along the preset track.

[0016] In one embodiment, the preset trajectory is a circular ring centered on the first axis.

[0017] In one embodiment, the preset trajectory is a polygonal ring centered on the first axis.

[0018] In one embodiment, the invention further comprises an adjustment component for changing the relative position of the first axis and the second axis.

[0019] In one embodiment, the cleaning member includes a plurality of fins spaced apart along the circumference of the outer cylinder or the inner cylinder.

[0020] The beneficial effects of the present invention are as follows: by setting up multiple heat exchange components, when it is necessary to change the temperature of the obtained medium and high temperature medium, different heat exchange components can be switched to perform the heat exchange process, thereby improving the scope of application; when dirt is generated on the tube wall of the inner cylinder or the outer cylinder, the driving component switches the initial position and the cleaning position, thereby switching the inner cylinder and the outer cylinder between coaxial and eccentric, so that the cleaning component abuts against the outer wall of the inner cylinder or the inner wall of the outer cylinder to remove scale, which is convenient for cleaning, ensuring the heat exchange efficiency and the continuous use of the heat exchange device. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A schematic structural diagram of a heat exchange device for heat exchange between different liquids provided in an embodiment of the present invention;

[0022] Figure 2 for Figure 1 Exploded view of the heat exchange device used for heat exchange between different liquids;

[0023] Figure 3 for Figure 2 A schematic structural diagram of a heat exchange assembly of a heat exchange device for heat exchange between different liquids;

[0024] Figure 4 for Figure 3 A cross-sectional view of a heat exchange device for heat exchange between different liquids;

[0025] Figure 5 for Figure 2 A partial enlarged view of point A in the middle;

[0026] Figure 6 for Figure 1 A front view of a heat exchange device for heat exchange between different liquids;

[0027] Figure 7 for Figure 6 A cross-sectional view taken along line BB of a heat exchange device for heat exchange between different liquids;

[0028] Figure 8 for Figure 3 Schematic diagram of the structure of the inner cylinder of the heat exchange device used for heat exchange between different liquids.

[0029] in:

[0030] 100, bracket;

[0031] 200, heat exchange assembly; 201, inner tube; 202, outer tube; 203, cleaning element; 204, liquid inlet 1; 205, liquid outlet 1; 206, end cap; 207, liquid inlet 2; 208, liquid outlet 2; 209, side inlet hole; 210, side outlet hole; 211, elastic ring; 212, support plate; 213, connecting column; 214, fixing plate; 215, connector; 216, fin;

[0032] 300, drive assembly; 301, driving pulley; 302, transmission belt; 303, first motor; 304, driven pulley; 305, second motor; 306, pulley; 307, ring groove; 308, belt; 309, support plate; 310, first gear; 311, second gear; 312, connecting pin; 313, mounting plate; 314, cover plate; 315, third motor;

[0033] 400, adjustment component; 401, slide; 402, plate; 403, screw; 404, seat. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention will be 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 intended to limit the present invention.

[0035] The serial numbers assigned to components herein, such as "first," "second," etc., are used solely to distinguish the objects being described and do not convey any sequential or technical meaning. References to "connection" and "coupling" herein, unless otherwise specified, include both direct and indirect connections (couplings). In the description of the present invention, it should be understood that terms such as "upper," "lower," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise" indicate positions or relationships based on those shown in the accompanying drawings. These terms are intended solely to facilitate the description of the present invention and simplify the description. They are not intended to indicate or imply that the device or component being referred to must have, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention.

[0036] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0037] like Figures 1 to 8 As shown, the present invention provides a heat exchange device for heat exchange between different liquids, comprising:

[0038] Bracket 100;

[0039] The heat exchange assembly 200 includes a plurality of heat exchange assemblies 200 arranged at intervals on the bracket 100. The heat exchange assembly 200 includes an inner cylinder 201 and an outer cylinder 202 which can rotate relative to each other. A first heat exchange channel is formed in the inner cylinder 201. External low-temperature medium or high-temperature medium exchanges heat with the inner cylinder 201 through the first heat exchange channel. A second heat exchange channel is formed between the inner cylinder 201 and the outer cylinder 202. The inner cylinder 201 and the outer cylinder 202 exchange heat through the second heat exchange channel. A cleaning member 203 is provided in the second heat exchange channel. The inner cylinder 201 or the outer cylinder 202 can move relative to each other in the radial direction and generate corresponding initial position and cleaning position before and after the movement. When in the initial position, the inner cylinder 201 and the outer cylinder 202 are coaxially arranged. When in the cleaning position, the axis of the inner cylinder 201 and the axis of the outer cylinder 202 are spaced apart and the cleaning member 203 abuts against the outer wall of the inner cylinder 201 or the inner wall of the outer cylinder 202.

[0040] The driving assembly 300 is used to drive the inner cylinder 201 and the outer cylinder 202 to switch between the initial position and the cleaning position, so that the distance between the cleaning member 203 and the inner cylinder 201 or the outer cylinder 202 changes.

[0041] By setting up multiple heat exchange components 200, when it is necessary to change the temperature of the obtained medium and high temperature medium, different heat exchange components 200 can be switched to perform the heat exchange process, thereby improving the scope of application; when dirt is generated on the tube wall of the inner tube 201 or the outer tube 202, the driving component 300 switches the initial position and the cleaning position, thereby switching the inner tube 201 and the outer tube 202 between coaxial and eccentric positions, so that the cleaning component 203 abuts against the outer wall of the inner tube 201 or the inner wall of the outer tube 202 for descaling, making cleaning convenient, ensuring the heat exchange efficiency and continuous use of the heat exchange device.

[0042] When the cleaning member 203 is disposed on the inner wall of the outer cylinder 202 (not shown), the inner cylinder 201 must be rotated and the outer cylinder 202 can be selectively rotated to remove scale from the outer wall of the inner cylinder 201; when the cleaning member 203 is disposed on the outer wall of the inner cylinder 201, see Figure 4 、 Figure 8 , the outer cylinder 202 must rotate, and the inner cylinder 201 can be rotated selectively to descale the inner wall of the outer cylinder 202.

[0043] Of course, the cleaning member 203 can also be set independently of the outer cylinder 202 and the inner cylinder 201. The first option is that the cleaning member 203 rotates, and the inner cylinder 201 and the outer cylinder 202 do not rotate. When the inner cylinder 201 and the outer cylinder 202 approach the cleaning member 203 at the same time, the outer wall of the inner cylinder 201 and the inner wall of the outer cylinder 202 are descaled; the second option is that the cleaning member 203 does not rotate, and the inner cylinder 201 and the outer cylinder 202 can rotate in the same direction or in the opposite direction to descale the outer wall of the inner cylinder 201 and the inner wall of the outer cylinder 202.

[0044] In the initial position, that is, when the inner cylinder 201 and the outer cylinder 202 are coaxial, the heat exchange process between the low-temperature medium and the high-temperature medium is carried out, and in the cleaning position, that is, when the inner cylinder 201 and the outer cylinder 202 are eccentric, the outer wall of the inner cylinder 201 or the inner wall of the outer cylinder 202 is descaled.

[0045] The inner cylinder 201 and the outer cylinder 202 are kept nested and arranged vertically for use. Figure 4 The heat exchange device is placed horizontally, with the right end as the bottom and the left end as the top, which can of course be switched. The lower end of the inner cylinder 201 is provided with a liquid inlet 204 for introducing a low-temperature medium or a high-temperature medium, and the upper end is provided with a liquid outlet 205. Both ends of the outer cylinder 202 are provided with end covers 206, and the two end covers 206 are respectively provided with a liquid inlet 207 and a liquid outlet 208 for introducing a high-temperature medium or a low-temperature medium. The two ends of the outer cylinder 202 are respectively provided with a side inlet hole 209 and a side outlet hole 210 corresponding to the liquid inlet 207. The end covers 206 and the inner cylinder 202 are respectively provided with a side inlet hole 209 and a side outlet hole 210 corresponding to the liquid inlet 207. 01, and between the outer cylinder 202 and the inner cylinder 201, an elastic ring 211 is provided, so that the inner cylinder 201 and the outer cylinder 202 have a tendency to maintain coaxiality. The elastic ring 211 is provided with deformation holes along its axial direction, and multiple deformation holes are arranged at intervals along the circumference of the elastic ring 211. Of course, the elastic ring 211 can also have other structures, for example, it includes an inner ring, an outer ring and a corrugated ring arranged between the inner ring and the outer ring, and the corrugated ring can be expanded and contracted along the radial direction of the elastic ring 211;

[0046] The bracket 100 includes two support plates 212, and the end cover 206 is provided with a fixing ear. The inner cylinder 201 and the outer cylinder 202 are fixedly installed between the two support plates 212 through the fixing ears on the end cover 206. The two support plates 212 are fixed by multiple connecting columns 213; a fixing plate 214 is also provided on the support plate 212 for fixing the end of the inner cylinder 201. Since the inner cylinder 201 has radial freedom relative to the outer cylinder 202, a connecting head 215 with an opening is provided at the end of the inner cylinder 201, and an elastic ring 211 is also provided between the end of the inner cylinder 201 and the connecting head 215; it is worth noting that the relative connections between the inner cylinder 201, the outer cylinder 202, the end cover 206 and the connecting head 215 are all provided with sealing rings to ensure the sealing between the inner cylinder 201, the outer cylinder 202 and the end cover 206.

[0047] Preferably, the driving assembly 300 includes a driving wheel 301 and a transmission belt 302. The driving wheel 301 rotates and drives the inner cylinder 201 or the outer cylinder 202 to rotate through the transmission belt 302. The driving wheel 301 can move radially along a preset trajectory and drive the inner cylinder 201 or the outer cylinder 202 to move radially through the transmission belt 302.

[0048] The driving wheel 301 rotates and drives the inner cylinder 201 or the outer cylinder 202 to rotate through the transmission belt 302. At the same time, the driving wheel 301 can move radially along a preset trajectory, exerting a pulling effect on the transmission belt 302. The transmission belt 302 drives the inner cylinder 201 or the outer cylinder 202 to move radially, thereby switching the inner cylinder 201 and the outer cylinder 202 between coaxial and eccentric positions.

[0049] The driving wheel 301 is driven by a first motor 303, which is equipped with a corresponding power supply, controller and other components to facilitate start and stop control. The transmission belt 302 has a certain elasticity and can be reset after deformation within a certain range.

[0050] In this embodiment, the driving wheel 301 is arranged on the outside of the transmission belt 302, and the inner side of the transmission belt 302 is further provided with a driven wheel 304, which is coaxially sleeved on one end of the inner cylinder 201. When the driving wheel 301 rotates, the inner cylinder 201 is driven to rotate through the transmission belt 302; correspondingly, the cleaning member 203 is a plurality of fins 216, which are circumferentially spaced on the outer wall of the inner cylinder 201. The rotation of the inner cylinder 201 drives the cleaning member 203 to rotate accordingly to descale the inner wall of the outer cylinder 202. At the same time, the interval arrangement of the plurality of fins 216 can also improve the heat exchange efficiency of the inner cylinder 201 and the outer cylinder 202; in addition, the outer cylinder 202 also needs to rotate in the opposite direction. The specific driving method can be: one of the supports A second motor 305 is provided on the plate 212. The second motor 305 is configured with corresponding power supplies, controllers and other components to facilitate start and stop control. A pulley 306 is fixed to the output end of the second motor 305. An annular groove 307 is provided on the end cover 206 at one end of the outer cylinder 202. A belt 308 is provided on the outer sleeve of the pulley 306 and the multiple annular grooves 307. Specifically, the output end of the second motor 305 drives the pulley 306 to rotate, and the pulley 306 drives one of the outer cylinders 202 to rotate through the first belt 308. One of the outer cylinders 202 drives the other outer cylinders 202 to rotate synchronously through the second belt 308, and the rotation direction is opposite to that of the inner cylinder 201, so as to facilitate more efficient descaling of the inner wall of the outer cylinder 202.

[0051] Of course, other structures can also be used to switch between coaxial and eccentric positions of the inner cylinder 201 and the outer cylinder 202. For example, an electric push rod can be provided between the outer cylinder 202 and the inner cylinder 201, and the electric push rod can push or pull the inner cylinder 201 or the outer cylinder 202 to move in the radial direction.

[0052] Preferably, the preset trajectory is a ring centered on the first axis.

[0053] Among them, at this time, only one driving wheel 301 is provided and is arranged on the outside of the transmission belt 302. A support disk 309 is fixed between the multiple connecting columns 213, and a third motor 315 is installed on the support disk 309. The third motor 315 is configured with corresponding components such as a power supply and a controller to facilitate start and stop control. The output end of the third motor 315 is coaxially mounted with a drive disk, and a rotatable driving wheel 301 is eccentrically mounted on the surface of the drive disk. At this time, the output end of the third motor 315 drives the drive disk to rotate. The first axis is the axis of the drive disk and is located on the outside of the transmission belt 302. The preset trajectory is a circular ring. The driving wheel 301 revolves around the first axis and pushes the same section of the transmission belt 302 inward in sequence, causing the transmission belt 302 to deform.

[0054] Preferably, only one driving wheel 301 is provided and is provided on the inner side of the transmission belt 302. The first axis is the axis of the driving disk and it coincides with the geometric center of multiple heat exchange components 200. At this time, the preset trajectory is a circular ring. The driving wheel 301 revolves around the first axis and pushes the adjacent sections of the transmission belt 302 outward in turn, thereby generating a periodic and regular pulling effect on the transmission belt 302, thereby improving the descaling effect.

[0055] As a structural variation of the present invention, the preset trajectory is in the shape of a straight line segment.

[0056] The support plate 309 is provided with an electric push rod, the output end of which is provided with a mounting seat, and the driving wheel 301 is rotatably mounted on the mounting seat. At this time, the electric push rod can cause the driving wheel 301 to reciprocate along a straight line, thereby exerting a pulling effect on the transmission belt 302. Of course, other structures with similar functions can also be used, such as a crank-connecting rod slider structure, a linear motor structure, etc.

[0057] As a structural variation of the present invention, the preset trajectory is in the shape of an arc segment.

[0058] Among them, the support plate 309 is provided with an electric push rod and a rocker arm. The middle portion of the rocker arm is hinged to the support plate 309. The rocker arm has an elongated hole between its middle portion and one end. The output end of the electric push rod is provided with a detent pin, which is disposed in the elongated hole. The other end of the rocker arm is provided with a mounting seat. The driving wheel 301 is rotatably mounted on the mounting seat. At this time, the output end of the electric push rod pushes the rocker arm to swing back and forth around its middle portion via the detent pin, driving the mounting seat at the other end of the rocker arm and the driving wheel 301 to move back and forth along an arc, thereby generating a pulling effect on the transmission belt 302. Of course, other structures with similar functions can also be used, such as a crank provided at the output end of a bidirectional reciprocating motor, a mounting seat provided at the end of the crank, and a driving wheel 301 rotatably mounted on the mounting seat. The output end of the bidirectional reciprocating motor drives the crank to rotate, driving the mounting seat at the other end of the crank and the driving wheel 301 to move back and forth along an arc, thereby generating a pulling effect on the transmission belt 302.

[0059] Preferably, the plurality of driving wheels 301 are arranged at intervals in the circumferential direction around the second axis, and the plurality of driving wheels 301 are arranged on the same side of the transmission belt 302 and move radially along a preset track.

[0060] Preferably, the preset trajectory is a circular ring centered on the first axis.

[0061] Among them, see Figure 2 、 Figure 7 The number of driving wheels 301 is consistent with that of the heat exchange assembly 200 and they are all arranged at circumferential intervals. The number is at least 3, for example, when they are all 4, multiple driving wheels 301 form a square, and the heat exchange assembly 200 also forms a square. A third motor 315 is installed on one side of the support disk 309, and two first gears 310 are rotatably installed on the other side of the support disk 309. The output end of the third motor 315 passes through the support disk 309 and is coaxially fixed to one of the first gears 310. The two first gears 310 are coplanar and arranged opposite to each other. A second gear 311 is provided between the two first gears 310 and meshes with them, so that the two first gears 310 rotate at the same speed and in the same direction. , at this time, the first axis is parallel to the axis of the first gear 310 and passes through the midpoint of the line connecting the two first gears 310; each first gear 310 is eccentrically provided with a connecting pin 312, and the ends of the two connecting pins 312 are provided with mounting plates 313, and the four driving wheels 301 are circumferentially spaced and rotatably arranged along the mounting plate 313. At this time, the second axis is the axis of the mounting plate 313, and the distance between the two connecting pins 312 is equal to the distance between the two first gears 310; the mounting plate 313 is located on one side of the driving wheel 301, and a cover plate 314 is provided on the other side of the driving wheel 301. The first motor 303 is installed on the cover plate 314 to drive the driving wheels 301 to rotate respectively.

[0062] The output end of the third motor 315 drives one of the first gears 310 to rotate, and drives the other first gear 310 to rotate through the second gear 311, so that the two first gears 310 rotate at the same speed and in the same direction, and drives the mounting plate 313 and the four driving wheels 301 to perform circular motion around the first axis through the two connecting pins 312, and the relative position of each driving wheel 301 remains unchanged, thereby producing a more uniform pulling effect on the transmission belt 302, so that the deformation of the transmission belt 302 has a certain regularity. For the same inner cylinder 201 and outer cylinder 202, the magnitude and direction of the pulling force on the inner cylinder 201 change periodically, so that the speed and displacement of the radial movement of the inner cylinder 201 also change periodically, thereby achieving more uniform switching of the coaxial or eccentric state of the inner cylinder 201 and the outer cylinder 202, thereby making the dirt removal effect more uniform.

[0063] As a structural variation of the present invention, the preset trajectory is a polygonal ring centered on the first axis.

[0064] The number of corresponding sides of the polygonal ring is at least 3. The larger the number of sides, the closer it is to the aforementioned circular ring, the more uniform the pulling effect on the transmission belt 302, and the more regular the deformation generated. The implementation method of the preset track as a polygonal ring can be set selectively. For example, when the number of polygonal rings is 4, that is, when the preset track is a square, a third motor 315 is provided on one side of the support disk 309. A crank is fixed to the output end of the third motor 315. The crank is also provided on one side of the support disk 309. The support disk 309 is provided with a square track groove. The end of the crank is provided with a movable post. The movable post is disposed in the square track groove and moves along the groove. The end of the movable post passes through the support disk 309 and is provided with an adjustment motor. The output end of the adjustment motor is fixed to a mounting disk 313. The four driving wheels 301 are rotatably arranged at intervals along the circumference of the mounting disk 313. In this case, the second axis is the axis of the mounting disk 313, and the first axis is the axis of the output end of the third motor 315.

[0065] The output end of the third motor 315 drives the crank to rotate, and the moving column at the end of the crank moves along the square track groove, driving the mounting plate 313 and the four driving wheels 301 to move along the square track groove. When the moving column moves to the corner of the square track groove and rotates, the motor is adjusted to synchronously drive the mounting plate 313 to rotate in the opposite direction by the same angle, so that the relative position of each driving wheel 301 remains consistent, thereby producing a relatively uniform pulling effect on the transmission belt 302, so that the deformation of the transmission belt 302 has a certain regularity. For the same inner cylinder 201 and outer cylinder 202, the magnitude and direction of the pulling force on the inner cylinder 201 also change periodically, so that the speed and displacement of the radial movement of the inner cylinder 201 also change periodically, thereby achieving a relatively uniform switching of the coaxial or eccentric state of the inner cylinder 201 and the outer cylinder 202, thereby making the dirt removal effect more uniform.

[0066] Preferably, an adjustment component 400 is further included for changing the relative position of the first axis and the second axis.

[0067] Among them, see Figure 5 The structure of the adjustment component 400 can be as follows: a slide groove 401 is opened on the side of the two first gears 310 away from the support plate 309, and the slide groove 401 is preferably along the radial direction of the first gear 310, one end of the connecting pin 312 is inserted in the slide groove 401 and can slide along it, and the other end of the connecting pin 312 is connected to the mounting plate 313, and a plate body 402 is fixed in one of the slide grooves 401, and a screw 403 is provided on the plate body 402 through a thread, and one end of the screw 403 is provided with a knob, and the other end is rotatably connected to the seat body 404, and one end of one of the connecting pins 312 can be rotatably set on the seat body 404; the cross-section of one end of the connecting pin 312 is a dovetail or T-shaped, and the cross-section of the slide groove 401 is a dovetail or T-shaped, so as to avoid failure of the connection between the connecting pin 312 and the slide groove 401, thereby improving the connection stability between the support plate 309 and the mounting plate 313.

[0068] Turn the knob and screw 403 to push the seat 404 and one of the connecting pins 312 to slide along one of the slide grooves 401. At the same time, the other connecting pin 312 also slides along the other slide groove 401, thereby adjusting the position of the connecting pin 312 in the slide groove 401, thereby changing the relative position of the first axis and the second axis to adjust the descaling force. That is, the farther the distance between the first axis and the second axis is, the greater the descaling force. Of course, the resistance of the cleaning part 203 during operation is also greater, and the wear is faster.

[0069] Of course, the relative positions of the first axis and the second axis may be kept constant and non-adjustable, so as to always achieve better descaling effects.

[0070] As a variation of the above structure, a telescopic structure such as an electric push rod or a cylinder can be set in one of the slide grooves 401 to enable the plate body 402 and one of the connecting pins 312 to slide along the corresponding slide groove 401.

[0071] Preferably, see Figure 8 The cleaning member 203 includes a plurality of fins 216 spaced apart along the circumference of the inner tube 201 .

[0072] The fins 216 may be spiral-shaped to facilitate discharge of the removed dirt from the second liquid outlet 208 . Of course, under the flow of high-temperature medium or low-temperature medium, the removed dirt also tends to flow toward the second liquid outlet 208 for discharge.

[0073] When the present invention is in use, the external low-temperature medium or high-temperature medium exchanges heat with the inner tube 201 through the first heat exchange channel. A second heat exchange channel is formed between the inner tube 201 and the outer tube 202. The inner tube 201 and the outer tube 202 exchange heat through the second heat exchange channel, thereby realizing the heat exchange process;

[0074] When dirt is generated on the inner wall of the outer cylinder 202, the driving assembly 300 switches the inner cylinder 201 and the outer cylinder 202 between the initial position and the cleaning position. Specifically, the first motor 303 drives the driving wheel 301 to rotate, and drives the inner cylinder 201 to rotate through the transmission belt 302 and the driven wheel 304, so as to drive the cleaning piece 203 on the outer wall of the inner cylinder 201 to rotate. At the same time, the second motor 305 drives the pulley 306 to rotate, and drives the outer cylinder 202 to rotate in the opposite direction relative to the inner cylinder 201 through the belt 308 and the annular groove 307; at the same time, the third motor 315 drives the two first gears 310 to rotate at the same speed and in the same direction, and drives the mounting plate 313 and the four driving wheels 301 to rotate around the first gear 310 through the two connecting pins 312. An axis seat makes circular motion, and the relative position of each driving wheel 301 remains unchanged, thereby producing a more uniform pulling effect on the transmission belt 302, so that the cleaning member 203 can abut against the inner wall of the outer cylinder 202 for descaling. At the same time, the deformation of the transmission belt 302 has a certain regularity. For the same inner cylinder 201 and outer cylinder 202, the magnitude and direction of the pulling force on the inner cylinder 201 change periodically, so that the speed and displacement of the radial movement of the inner cylinder 201 also change periodically, thereby achieving more uniform switching of the coaxial or eccentric state of the inner cylinder 201 and the outer cylinder 202, thereby making the dirt removal effect more uniform and easy to clean, which can ensure the heat exchange efficiency and the continuous use of the heat exchange device.

[0075] The technical features of the above embodiments can 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.

[0076] The above-described embodiments merely illustrate several embodiments of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art would be able to make various modifications and improvements without departing from the spirit of the present invention, all of which fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be determined by the appended claims.

Claims

1. A heat exchange device for heat exchange between different liquids, characterized in that: include: Bracket; a heat exchange assembly, wherein a plurality of heat exchange assemblies are arranged on the bracket at intervals, and the heat exchange assembly includes an inner cylinder and an outer cylinder which can rotate relative to each other, a first heat exchange channel being formed in the inner cylinder, and an external low-temperature medium or a high-temperature medium exchanges heat with the inner cylinder through the first heat exchange channel, and a second heat exchange channel is formed between the inner cylinder and the outer cylinder, and the inner cylinder and the outer cylinder exchange heat through the second heat exchange channel; a cleaning member is provided in the second heat exchange channel, and the inner cylinder or the outer cylinder can move relative to each other in the radial direction, and generate corresponding initial position and cleaning position before and after movement, when in the initial position, the inner cylinder and the outer cylinder are coaxially arranged, and when in the cleaning position, the axis of the inner cylinder and the axis of the outer cylinder are spaced apart and the cleaning member abuts against the outer wall of the inner cylinder or the inner wall of the outer cylinder; The driving assembly is used to drive the inner cylinder and the outer cylinder to switch between the initial position and the cleaning position, so that the distance between the cleaning member and the inner cylinder or the outer cylinder changes.

2. The heat exchange device for heat exchange between different liquids according to claim 1, characterized in that: The driving assembly includes a driving wheel and a transmission belt. The driving wheel rotates and drives the inner cylinder or the outer cylinder to rotate through the transmission belt. The driving wheel can move radially along a preset trajectory and drives the inner cylinder or the outer cylinder to move radially through the transmission belt.

3. The heat exchange device for heat exchange between different liquids according to claim 1, characterized in that: The cleaning member includes a plurality of fins arranged at intervals along the circumference of the outer cylinder or the inner cylinder.

Images