Heat exchange device for heat exchange of different liquids

Abstract

According to the heat exchange device for heat exchange of different liquids, the multiple heat exchange assemblies are arranged, when the obtained temperature of a medium-high temperature medium needs to be changed, the different heat exchange assemblies can be switched to conduct the heat exchange process, and the application range is widened; when dirt is generated on the pipe wall of the inner cylinder or the outer cylinder, the driving assembly switches the initial positions and the cleaning positions of the inner cylinder and the outer cylinder, so that the axes of the inner cylinder and the outer cylinder are switched to be eccentric from coaxial, the cleaning piece is made to abut against the outer wall of the inner cylinder or the inner wall of the outer cylinder for descaling, cleaning is convenient, and the cleaning efficiency is improved. The heat exchange efficiency and the continuous use of the heat exchange device are ensured.

Description

Technical Field

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

[0002] As a core device for heat energy transfer, heat exchangers play an important role in industrial production and energy utilization. Through an efficient heat exchange process, they achieve heat recovery, transfer, and distribution between different media, and are widely used in industrial fields such as petrochemical, power production, environmental protection engineering, and refrigeration systems. For example, in the process of petroleum refining, the shell-and-tube heat exchanger significantly improves the waste heat recovery efficiency through the interaction of the shell-side and tube-side fluids; in a thermal power plant, as a key component of the condenser or boiler feedwater preheater, it ensures the stable operation of the thermal cycle system.

[0003] Currently, common heat exchange devices are generally coaxial sleeve type, that is, an outer tube is sleeved outside the inner tube, and a low-temperature medium and a high-temperature medium are respectively introduced. After the low-temperature medium absorbs the heat of the high-temperature medium and becomes a medium-high temperature medium, the heat exchange process is realized. However, when it is necessary to change the temperature of the obtained medium-high temperature medium, the corresponding high-temperature medium or low-temperature medium cannot be adjusted; in addition, when the high-temperature medium and the low-temperature medium exchange heat, the temperature change easily causes dirt to form on the heat exchange tube wall, reducing the heat exchange efficiency, affecting the continuous use of the heat exchange device, and being inconvenient for subsequent cleaning.

[0004] The information disclosed in the background art part of the present invention is only intended to deepen the understanding of the general background art of the present invention, and should not be regarded as an admission or any form of suggestion that this information constitutes the prior art 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 view of the problems existing in the current heat exchange devices.

[0006] The above object is achieved by the following technical solutions: A heat exchange device for heat exchange between different liquids, comprising: A bracket; Heat exchange components, a plurality of the heat exchange components are arranged at intervals on the bracket. The heat exchange component includes an inner cylinder and an outer cylinder that can rotate relative to each other. A first heat exchange channel is formed inside the inner cylinder, and an external low-temperature medium or high-temperature medium exchanges heat with the inner cylinder through the first heat exchange channel. 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 arranged in the second heat exchange channel. The inner cylinder or the outer cylinder can move radially relative to each other and generate corresponding initial positions and cleaning positions before and after the movement. When in the initial position, the inner cylinder and the outer cylinder are coaxially arranged. When in the cleaning position, the axis of the inner cylinder is spaced from the axis of the outer cylinder and the cleaning member abuts against the outer wall of the inner cylinder or the inner wall of the outer cylinder. A driving component 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.

[0007] In one embodiment, the driving component 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 track and drive the inner cylinder or the outer cylinder to move radially through the transmission belt.

[0008] In one embodiment, the preset track is a ring centered on the first axis.

[0009] In one embodiment, the preset track is a straight line segment.

[0010] In one embodiment, the preset track is an arc segment.

[0011] In one embodiment, a plurality of the driving wheels are arranged at circumferential intervals around the second axis. The plurality of driving wheels are arranged on the same side of the transmission belt and move radially along the preset track.

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

[0013] In one embodiment, the preset track is a polygonal ring centered on the first axis.

[0014] In one embodiment, an adjusting component is further included for changing the relative position between the first axis and the second axis.

[0015] In one embodiment, the cleaning member includes a plurality of fins arranged at circumferential intervals along the outer cylinder or the inner cylinder.

[0016] The beneficial effects of the present invention are as follows: By providing multiple heat exchange components, when it is necessary to change the temperature of the obtained medium-temperature and high-temperature medium, different heat exchange components can be switched for the heat exchange process, improving the scope of application; when dirt forms on the tube walls of the inner cylinder or the outer cylinder, the driving component switches between the initial position and the cleaning position, so that the inner cylinder and the outer cylinder are switched between coaxial and eccentric states, enabling the cleaning member to abut against the outer wall of the inner cylinder or the inner wall of the outer cylinder for scale removal, which is convenient for cleaning and ensures the heat exchange efficiency and continuous use of the heat exchange device. Description of the Drawings

[0017] Figure 1 It is a schematic structural diagram of a heat exchange device for heat exchange of different liquids provided by an embodiment of the present invention; Figure 2 For Figure 1 It is an exploded view of the parts of the heat exchange device for heat exchange of different liquids in Figure 3 For Figure 2 It is a schematic structural diagram of the heat exchange component of the heat exchange device for heat exchange of different liquids in Figure 4 For Figure 3 It is a cross-sectional view of the heat exchange device for heat exchange of different liquids in Figure 5 For Figure 2 It is a partial enlarged view at A in Figure 6 For Figure 1 It is a front view of the heat exchange device for heat exchange of different liquids in Figure 7 For Figure 6 It is a cross-sectional view in the B-B direction of the heat exchange device for heat exchange of different liquids in Figure 8 For Figure 3 It is a schematic structural diagram of the inner cylinder of the heat exchange device for heat exchange of different liquids in

[0018] Wherein: 100, bracket; 200, heat exchange component; 201, inner cylinder; 202, outer cylinder; 203, cleaning member; 204, liquid inlet one; 205, liquid outlet one; 206, end cover; 207, liquid inlet two; 208, liquid outlet two; 209, side inlet hole; 210, side outlet hole; 211, elastic ring; 212, support plate; 213, connecting column; 214, fixing plate; 215, connecting head; 216, fin. 300. Driving component; 301. Driving wheel; 302. Transmission belt; 303. First motor; 304. Driven wheel; 305. Second motor; 306. Belt pulley; 307. Ring groove; 308. Belt; 309. Support disc; 310. First gear; 311. Second gear; 312. Connecting pin; 313. Mounting disc; 314. Cover plate; 315. Third motor 400. Adjusting component; 401. Slide groove; 402. Plate body; 403. Screw; 404. Base body Detailed implementation manner

[0019] In order to make the objectives, technical solutions and advantages of the present invention clearer and more understandable, 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 used to limit the present invention

[0020] The serial numbers assigned to the components herein, such as "first", "second", etc., are only used to distinguish the described objects and do not have any sequential or technical meanings. The "connection" and "coupling" mentioned in the present invention, unless otherwise specifically stated, both include direct and indirect connections (couplings). In the description of the present invention, it should be understood that the orientation or positional relationships indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. are based on the orientation or positional relationships shown in the accompanying drawings, and are 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 construed as a limitation on the present invention

[0021] In the present invention, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature may be 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, the first feature being "above", "over" and "on" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "under" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature

[0022] As Figures 1 to 8 shown, a heat exchange device for heat exchange of different liquids according to the present invention includes: Bracket 100 The heat exchange assembly 200, a plurality of heat exchange assemblies 200 are arranged at intervals on the bracket 100. The heat exchange assembly 200 includes an inner cylinder 201 and an outer cylinder 202 that can rotate relative to each other. A first heat exchange channel is formed inside the inner cylinder 201. The 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 arranged 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 corresponding initial positions and cleaning positions are generated 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 is spaced from the axis of the outer cylinder 202 and the cleaning member 203 abuts against the outer wall of the inner cylinder 201 or the inner wall of the outer cylinder 202. 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.

[0023] By arranging a plurality of heat exchange assemblies 200, when it is necessary to change the temperature of the obtained medium with medium and high temperature, different heat exchange assemblies 200 can be switched for the heat exchange process to improve the scope of application. When dirt forms on the tube walls of the inner cylinder 201 or the outer cylinder 202, the driving assembly 300 switches between the initial position and the cleaning position, so that the inner cylinder 201 and the outer cylinder 202 are switched between coaxial and eccentric, so that the cleaning member 203 abuts against the outer wall of the inner cylinder 201 or the inner wall of the outer cylinder 202 for descaling. The cleaning is convenient, ensuring the heat exchange efficiency and the continuous use of the heat exchange device.

[0024] Wherein, when the cleaning member 203 is arranged on the inner wall of the outer cylinder 202 (not shown), the inner cylinder 201 must rotate, and the outer cylinder 202 can be selectively rotated to descale the outer wall of the inner cylinder 201. When the cleaning member 203 is arranged 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 selectively rotated to descale the inner wall of the outer cylinder 202.

[0025] Of course, the cleaning member 203 can also be arranged 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 or opposite directions to descale the outer wall of the inner cylinder 201 and the inner wall of the outer cylinder 202.

[0026] Among them, at 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. At the cleaning position, that is, when the inner cylinder 201 and the outer cylinder 202 are eccentric, the descaling process is carried out on the outer wall of the inner cylinder 201 or the inner wall of the outer cylinder 202.

[0027] Among them, the inner cylinder 201 and the outer cylinder 202 are kept nested inside and outside and vertically arranged for use. For the convenience of description, as Figure 4 in the heat exchange device is placed horizontally, with the right end at the bottom and the left end at the top. Of course, it can also be reversed. The lower end of the inner cylinder 201 is provided with a first liquid inlet 204 for introducing a low-temperature medium or a high-temperature medium, and the upper end is provided with a first liquid outlet 205. Both ends of the outer cylinder 202 are provided with end caps 206. The two end caps 206 are respectively provided with a second liquid inlet 207 for introducing a high-temperature medium or a low-temperature medium and a second liquid outlet 208. Side inlet holes 209 and side outlet holes 210 corresponding to the second liquid inlet 207 are respectively opened at both ends of the outer cylinder 202; elastic rings 211 are arranged between the end caps 206 and the inner cylinder 201, and between the outer cylinder 202 and the inner cylinder 201, so that the inner cylinder 201 and the outer cylinder 202 have a tendency to maintain coaxiality. The elastic rings 211 are axially provided with deformation holes, and a plurality of deformation holes are arranged at intervals along the circumferential direction of the elastic rings 211. Of course, the elastic rings 211 can also be of 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 expand and contract along the radial direction of the elastic rings 211; The bracket 100 includes two support plates 212. The end caps 206 are provided with fixing ears. 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 caps 206, and the two support plates 212 are fixed by a plurality of connecting columns 213; the support plates 212 are also provided with fixing plates 214 for fixing the end of the inner cylinder 201. Since the inner cylinder 201 has a radial degree of freedom relative to the outer cylinder 202, a connecting head 215 with an opening is arranged at the end of the inner cylinder 201, and an elastic ring 211 is also arranged between the end of the inner cylinder 201 and the connecting head 215; it is worth noting that sealing rings are arranged at the relative connection parts between the inner cylinder 201, the outer cylinder 202, the end caps 206, and the connecting head 215 to ensure the sealing performance between the inner cylinder 201, the outer cylinder 202, and the end caps 206.

[0028] 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 track and drive the inner cylinder 201 or the outer cylinder 202 to move radially through the transmission belt 302.

[0029] 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, and the transmission belt 302 drives the inner cylinder 201 or the outer cylinder 202 to move radially, so that the inner cylinder 201 and the outer cylinder 202 can be switched between coaxial and eccentric states.

[0030] Among them, the driving wheel 301 is driven by a first motor 303, and the first motor 303 is configured with corresponding components such as a power supply and a controller to facilitate the control of starting and stopping. The transmission belt 302 has a certain elasticity and can reset after deforming within a certain range.

[0031] In this embodiment, the driving wheel 301 is arranged on the outer side of the transmission belt 302, and a driven wheel 304 is also arranged on the inner side of the transmission belt 302. The driven wheel 304 is coaxially sleeved on one end of the inner cylinder 201. When the driving wheel 301 rotates, it drives the inner cylinder 201 to rotate through the transmission belt 302. Correspondingly, at this time, 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 correspondingly to remove scale from the inner wall of the outer cylinder 202. At the same time, the spaced arrangement of the plurality of fins 216 can also improve the heat exchange efficiency between 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 as follows: A second motor 305 is arranged on one of the support plates 212. The second motor 305 is configured with corresponding components such as a power supply and a controller to facilitate the control of starting and stopping. A belt pulley 306 is fixed to the output end of the second motor 305. A ring groove 307 is formed on the end cover 206 at one end of the outer cylinder 202. A belt 308 is sleeved outside the belt pulley 306 and the plurality of ring grooves 307. Specifically, the output end of the second motor 305 drives the belt pulley 306 to rotate, and the belt 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 rotates in the opposite direction to the inner cylinder 201 to facilitate more efficient scale removal from the inner wall of the outer cylinder 202.

[0032] Of course, other structures can also be adopted to switch the inner cylinder 201 and the outer cylinder 202 between coaxial and eccentric states. For example, an electric push rod can be arranged 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 radially.

[0033] Preferably, the preset trajectory is a ring centered on the first axis.

[0034] Among them, at this time, only one driving wheel 301 is provided and is arranged outside the transmission belt 302. A support disk 309 is fixed between multiple connecting columns 213. 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 controlling start and stop. The output end of the third motor 315 is coaxially installed with a driving disk, and a rotatable driving wheel 301 is eccentrically installed on the surface of the driving disk. At this time, the output end of the third motor 315 drives the driving disk to rotate. The first axis is the axis of the driving disk and is located outside the transmission belt 302. The preset trajectory is circular. The driving wheel 301 revolves around the first axis and sequentially pushes the same section of the transmission belt 302 inward, so as to cause the transmission belt 302 to deform.

[0035] Preferably, only one driving wheel 301 is provided and is arranged inside the transmission belt 302. The first axis is the axis of the driving disk and coincides with the geometric center of multiple heat exchange components 200. At this time, the preset trajectory is circular. The driving wheel 301 revolves around the first axis and sequentially pushes the adjacent sections of the transmission belt 302 outward, thereby generating a periodic and regular pulling effect on the transmission belt 302 and improving the descaling effect.

[0036] As a structural deformation of the present invention, the preset trajectory is a straight line segment.

[0037] Among them, an electric push rod is provided on the support disk 309, and an installation seat is provided at the output end of the electric push rod. The driving wheel 301 is rotatably installed on the installation seat. At this time, the electric push rod can make the driving wheel 301 reciprocate along a straight line, thereby generating a pulling effect on the transmission belt 302. Of course, other structures with similar functions can also be selected, such as a crank-slider structure, a linear motor structure, etc.

[0038] As a structural deformation of the present invention, the preset trajectory is an arc segment.

[0039] Among them, an electric push rod and a swing rod are provided on the support disk 309. The middle of the swing rod is hinged to the support disk 309. A long hole is opened between the middle and one end of the swing rod. A pin is provided at the output end of the electric push rod, and the pin is arranged in the long hole. An installation seat is provided at the other end of the swing rod. The driving wheel 301 is rotatably installed on the installation seat. At this time, the output end of the electric push rod pushes the swing rod to reciprocate around its middle through the pin, driving the installation seat and the driving wheel 301 at the other end of the swing rod to reciprocate along an arc, thereby generating a pulling effect on the transmission belt 302. Of course, other structures with similar functions can also be adopted. For example, a crank is provided at the output end of a bi-directional reciprocating motor, and an installation seat is provided at the end of the crank. The driving wheel 301 is rotatably installed on the installation seat. The output end of the bi-directional reciprocating motor drives the crank to rotate, driving the installation seat and the driving wheel 301 at the other end of the crank to reciprocate along an arc, thereby generating a pulling effect on the transmission belt 302.

[0040] Preferably, the multiple driving wheels 301 are circumferentially spaced around the second axis, and the multiple driving wheels 301 are arranged on the same side of the transmission belt 302 and radially move along a preset trajectory.

[0041] Preferably, the preset trajectory is a circular ring centered on the first axis.

[0042] Among them, referring to Figure 2 、 Figure 7 ,the number of the driving wheels 301 is the same as that of the heat exchange components 200 and they are both circumferentially spaced. The number of them is at least 3. For example, when they are both 4, the multiple driving wheels 301 form a square, and the heat exchange components 200 also form a square. A third motor 315 is installed on one side of the support disk 309. 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 oppositely arranged. A second gear 311 meshing with them is arranged between the two first gears 310 for making 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 connection line of the two first gears 310; an eccentric connection pin 312 is provided on each first gear 310. Mounting disks 313 are provided at the ends of the two connection pins 312. The 4 driving wheels 301 are circumferentially spaced and rotatably arranged along the mounting disk 313. At this time, the second axis is the axis of the mounting disk 313, and the distance between the two connection pins 312 is equal to the distance between the two first gears 310; the mounting disk 313 is located on one side of the driving wheel 301. 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 for driving the driving wheels 301 to rotate respectively.

[0043] 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 drive the mounting disk 313 and the 4 driving wheels 301 to make circular motions around the first axis through the two connection pins 312, and the relative positions of each driving wheel 301 remain unchanged, thereby generating a more uniform pulling effect on the transmission belt 302, making the deformation of the transmission belt 302 regular. For the same inner cylinder 201 and outer cylinder 202, the magnitude and direction of the pulling force received by 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 realizing a more uniform switching between the coaxial or eccentric states of the inner cylinder 201 and the outer cylinder 202, and thus making the dirt removal effect more uniform.

[0044] As a structural deformation of the present invention, the preset trajectory is a polygonal ring centered on the first axis.

[0045] Among them, 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 above-mentioned circular ring shape, the more uniform the pulling effect on the transmission belt 302, and the more regular the deformation generated. The implementation method with the preset trajectory being a polygonal ring can be selected and set. For example, when the number of polygonal rings is 4, that is, when the preset trajectory is 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, and the crank is still arranged on one side of the support disk 309. A square trajectory groove is formed on the support disk 309. A moving column is provided at the end of the crank. The moving column is arranged in the square trajectory groove and moves along it. The end of the moving column passes through the support disk 309 and an adjustment motor is provided. An installation disk 313 is fixed to the output end of the adjustment motor. Four driving wheels 301 are arranged at intervals along the circumference of the installation disk 313 and are rotatably arranged. At this time, the second axis is the axis of the installation disk 313, and the first axis is the axis of the output end of the third motor 315.

[0046] The output end of the third motor 315 drives the crank to rotate. The moving column at the end of the crank moves along the square trajectory groove, driving the installation disk 313 and the four driving wheels 301 to move along the square trajectory groove. When the moving column moves to the corner of the square trajectory groove and rotates, the adjustment motor synchronously drives the installation disk 313 to rotate in the opposite direction by the same angle, so that the relative positions of each driving wheel 301 remain consistent, thereby generating a relatively uniform pulling effect on the transmission belt 302, making the deformation generated by the transmission belt 302 regular. For the same inner cylinder 201 and outer cylinder 202, the magnitude and direction of the pulling force received by 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 realizing a relatively uniform switching between the coaxial or eccentric states of the inner cylinder 201 and the outer cylinder 202, and thus making the dirt removal effect relatively uniform.

[0047] Preferably, an adjusting assembly 400 is further included for changing the relative position between the first axis and the second axis.

[0048] Among them, referring to Figure 5 , the structure of the adjusting assembly 400 can be as follows: Sliding grooves 401 are formed on the sides of two first gears 310 away from the support disk 309. The sliding grooves 401 are preferably along the radial direction of the first gears 310. One end of a connecting pin 312 is inserted into the sliding groove 401 and can slide along it. The other end of the connecting pin 312 is connected to the installation disk 313. A plate body 402 is fixed in one of the sliding grooves 401. A screw rod 403 is provided on the plate body 402 through threads. A knob is provided at one end of the screw rod 403, and the other end is rotatably connected to a seat body 404. One end of one of the connecting pins 312 is rotatably arranged on the seat body 404; The cross-section of one end of the connecting pin 312 is dovetail-shaped or T-shaped, and the cross-section of the sliding groove 401 is dovetail-shaped or T-shaped to prevent the connection between the connecting pin 312 and the sliding groove 401 from failing and improve the connection stability between the support disk 309 and the installation disk 313.

[0049] Rotate the knob and the screw rod 403 to push the seat body 404 and one of the connecting pins 312 to slide along one of the sliding grooves 401. At the same time, the other connecting pin 312 also slides along the other sliding groove 401, so as to adjust the position of the connecting pin 312 in the sliding groove 401, thereby changing the relative position between the first axis and the second axis, so as to adjust the descaling strength. That is, when the distance between the first axis and the second axis is farther, the descaling strength is greater. Of course, the resistance during the operation of the cleaning part 203 is also greater, and the wear is faster.

[0050] Of course, the relative position between the first axis and the second axis can also be kept constant and non-adjustable, and descaling with better effect can always be carried out.

[0051] As a deformation of the above structure, a telescopic structure such as an electric push rod or a cylinder body can be arranged in one of the sliding grooves 401, so that the plate body 402 and one of the connecting pins 312 slide along the corresponding sliding groove 401.

[0052] Preferably, refer to Figure 8 , the cleaning part 203 includes a plurality of fins 216 arranged at intervals along the circumferential direction of the inner cylinder 201.

[0053] Among them, the fins 216 can be spiral, so as to facilitate the discharge of the removed dirt from the second liquid outlet 208. Of course, under the flow action of the high-temperature medium or the low-temperature medium, the removed dirt also has a tendency to flow and discharge towards the second liquid outlet 208.

[0054] When the present invention is in use, the 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, and the inner cylinder 201 and the outer cylinder 202 exchange heat through the second heat exchange channel, so as to realize the heat exchange process; When dirt appears 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 member 203 on the outer wall of the inner cylinder 201 to rotate. At the same time, the second motor 305 drives the belt 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 4 driving wheels 301 to move in a circular motion around the first axis seat through the two connecting pins 312, and the relative positions of each driving wheel 301 remain unchanged, so as to generate 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 to remove dirt. At the same time, the deformation of the transmission belt 302 has a certain pattern. For the same inner cylinder 201 and outer cylinder 202, the magnitude and direction of the pulling force received by the inner cylinder 201 change periodically, so that the speed and displacement of the radial movement of the inner cylinder 201 also change periodically, so as to realize a more uniform switching between the coaxial or eccentric states of the inner cylinder 201 and the outer cylinder 202, so that the dirt removal effect is more uniform, and the cleaning is convenient, which can ensure the heat exchange efficiency and the continuous use of the heat exchange device.

[0055] The technical features of the above embodiments can be combined arbitrarily. For the sake of concise description, 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, it should be considered as the scope recorded in this specification.

[0056] The above-described embodiments merely represent several implementation manners of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. A heat exchange device for heat exchange between different liquids, characterized in that: include: Bracket; A heat exchange component, a plurality of heat exchange components are arranged on the bracket at intervals, the heat exchange component comprises an inner cylinder and an outer cylinder which can rotate relatively, a first heat exchange channel is formed in the inner cylinder, an external low-temperature medium or a high-temperature medium exchanges heat with the inner cylinder through the first heat exchange channel, a second heat exchange channel is formed between the inner cylinder and the outer cylinder, the inner cylinder and the outer cylinder exchange heat through the second heat exchange channel; a cleaning piece is arranged in the second heat exchange channel, the inner cylinder or the outer cylinder can move relatively 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 is coaxially arranged with the outer cylinder, when in the cleaning position, the axis of the inner cylinder is spaced from the axis of the outer cylinder and the cleaning piece 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 piece 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 drive the inner cylinder or the outer cylinder to move radially through the transmission belt.

3. The heat exchange device for heat exchange of different liquids according to claim 2, characterized in that: The preset trajectory is a ring centered on the first axis.

4. The heat exchange device for heat exchange between different liquids according to claim 2, characterized in that: The preset trajectory is in the shape of a straight line segment.

5. The heat exchange device for heat exchange between different liquids according to claim 2, characterized in that: The preset trajectory is in the shape of an arc segment.

6. The heat exchange device for heat exchange between different liquids according to claim 3, characterized in that: 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.

7. The heat exchange device for heat exchange between different liquids according to claim 6, characterized in that: The preset trajectory is a circular ring centered on the first axis.

8. The heat exchange device for heat exchange between different liquids according to claim 6, characterized in that: The preset trajectory is a polygonal ring centered on the first axis.

9. The heat exchange device for heat exchange between different liquids according to claim 7, characterized in that: Also included is an adjustment component for changing the relative position of the first axis and the second axis.

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

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