Brazing type plate heat exchanger

Abstract

The invention provides a brazing type plate heat exchanger which comprises a fixing frame, and a heat exchange body is fixed in the fixing frame. The heat exchange main body is sleeved with the water treatment assembly capable of sliding in the vertical direction, the water treatment assembly comprises a mounting frame, and multiple layers of magnetic treatment parts are arranged on the inner wall of the mounting frame; the magnetic processing part comprises a plurality of magnetic blocks which are uniformly distributed in the mounting frame; and the flow mixing blocks are arranged on the heat exchange plate. According to the technical scheme, the physical effect of the magnetic mixed flow block and the chemical effect of magnetization treatment are combined, formation and deposition of scaling are effectively reduced, the turbulence intensity is increased through movement of the magnetic balls, the thickness of a fluid boundary layer is reduced, the heat exchange efficiency is improved, the problems of blockage and corrosion caused by scaling are solved, the cleaning frequency is reduced, and the service life of the magnetic mixed flow block is prolonged. The equipment operation period is prolonged, the use of chemical cleaning agents is reduced or avoided, and the maintenance cost and the environmental influence are reduced.

Description

Technical Field

[0001] The invention relates to the field of heat exchange, in particular to a brazed plate heat exchanger. Background Art

[0002] Brazed plate heat exchanger is an efficient and compact heat exchange equipment. It uses vacuum brazing process to connect a series of metal plates into a whole, forming alternating hot and cold fluid flow channels to achieve efficient heat transfer. Its corrugated plate design not only greatly increases the heat exchange area, but also makes the fluid form turbulence, significantly improving the heat exchange efficiency. Due to its compact structure, light weight, high pressure and high temperature resistance, brazed plate heat exchanger is widely used in refrigeration, air conditioning, heating, hot water, chemical industry and energy fields.

[0003] The core principle of the brazed plate heat exchanger is to achieve efficient heat exchange between hot fluid and cold fluid through the flow channel arrangement between adjacent plates. The hot and cold fluids flow in countercurrent or crosscurrent on both sides of the plate respectively. The special structure of the corrugated plate makes the fluid form turbulence, which maximizes the heat exchange effect. Heat is transferred from the high-temperature fluid to the low-temperature fluid through the high-thermal conductivity metal plate to complete the heat transfer process.

[0004] In brazed plate heat exchangers, the crystallization and deposition of minerals in water can easily lead to scaling on the surface of the heat exchange plates. Scaling not only reduces heat exchange efficiency, but also causes blockage of the flow channel, accelerates corrosion of the equipment, increases the frequency of cleaning, and even shortens the service life of the equipment.

[0005] Although the use of chemical cleaning agents can remove scale, it is harmful to the environment and has the disadvantages of high cost and complex operation. Although the existing magnetized water treatment technology can reduce some scale, the simple magnetization process has limited effect on removing initial scale on the inner wall surface of the heat exchanger flow channel.

[0006] Therefore, a brazed plate heat exchanger is provided to solve the above problems. Summary of the invention

[0007] The present invention provides a brazed plate heat exchanger to solve the problems that the prior art is difficult to effectively prevent the formation and deposition of scale in the brazed plate heat exchanger, is inconvenient to clean, has low efficiency, and is difficult to balance environmental protection and cost control.

[0008] The present invention solves the above technical problems through the following technical solutions: The present invention provides a brazed plate heat exchanger, comprising a fixing frame, a heat exchange body is fixed inside the fixing frame, the fixing frame comprises a base, support rods are fixed at the four corners of the top of the base, and the bottom ends of the support rods are fixed to the top plate, the heat exchange body is fixed on the base, and a fixed end for installation is fixed at the bottom end of the base; The heat exchange body comprises two end plates, and a plurality of heat exchange plates are stacked between the two end plates; A water treatment component, wherein the heat exchange main body is covered with a water treatment component that can slide vertically, and the water treatment component includes a mounting frame, and a multi-layer magnetic treatment part is arranged on the inner wall of the mounting frame; The magnetic processing part includes a plurality of magnetic blocks evenly distributed inside the installation frame; A plurality of magnetic mixing blocks are arranged on the heat exchange plate.

[0009] The technical solution in the present application realizes the combination of the physical effect of the magnetic mixing block and the chemical effect of the magnetization treatment, effectively reducing the formation and deposition of scaling. The movement of the magnetic balls increases the turbulence intensity, reduces the thickness of the fluid boundary layer, and improves the heat exchange efficiency.

[0010] In the technical solution, two adjacent heat exchange plates are connected by brazing, and the end plate and the corresponding outermost heat exchange plate are also connected by brazing. Connecting end tubes are fixed at the four corners of the surface of one of the end plates, and water guide holes are also opened at the four corners of the heat exchange plate. The water guide holes and the corresponding connecting end tubes are coaxially arranged. The above is a conventional structure of the heat exchanger.

[0011] In the technical solution, the surface protrusions of the heat exchange plate form a plurality of "human"-shaped flow guide protrusions distributed at equal intervals, and hot and cold water flow through the protruding flow guide protrusions to form turbulence and improve the efficiency of heat conduction; a baffle plate is arranged between the end plates of two adjacent flow guide protrusions, and the baffle plate is fixed on the surface of the heat exchange plate, and the fixing method can be welding. The two baffle plates and the corresponding two flow guide protrusions together form an unclosed flow guide cavity, and a plurality of magnetic mixing blocks are arranged inside the flow guide cavity. The thickness of the baffle plate is less than the thickness of the flow guide protrusion, and the baffle plate prevents the mixing block from flowing out of the corresponding flow guide cavity, and the mixing block is an ellipsoid.

[0012] In the technical solution, the mixing flow block includes a magnetic block and a buffer block. The buffer block is wrapped on the surface of the magnetic block and is in the shape of an ellipsoid.

[0013] The buffer block is made of a soft and high temperature resistant material, and specifically can be selected from one of the materials that meet the requirements, such as silicone rubber, fluororubber, TPE, etc.

[0014] The magnetic block is made of magnetic material, and specifically can be selected from one of the materials that meet the requirements, such as samarium cobalt magnet, neodymium iron boron magnet, etc.

[0015] In the technical solution, guide blocks are fixed on the two opposite side walls outside the installation frame, the guide blocks are slidably connected and wrapped on the guide rod, the guide rod is arranged vertically, and the guide rod is fixed between the base and the top plate or on the support rod.

[0016] Provides a structural foundation for the water treatment components to slide vertically.

[0017] A handle or a driving assembly is provided on the outer wall of one of the guide blocks, the handle is fixed on the outer wall of the guide block, a vertical plate is provided on the top of the handle, the top of the vertical plate is fixed to the extension plate on the end of the guide block, a screw rod distributed in the horizontal direction is inserted on the vertical plate, the screw rod and the vertical plate are threadedly connected, and the end of the screw rod can overlap with the surface of the guide plate.

[0018] When a handle is provided on the outer wall of the guide block, the water treatment component is moved vertically by the handle. At the same time, the screw is turned so that the screw is separated from or abuts against the surface of the guide plate to complete the fixation of the water treatment component in the vertical position.

[0019] In the technical solution, the driving assembly includes a first driving assembly driven by a rod-shaped member and a second driving assembly driven by a mechanical mechanism.

[0020] When necessary, the driving assembly can drive the water treatment assembly to move vertically, and the moving water treatment assembly can more comprehensively treat the water flowing through the heat exchange body.

[0021] The first driving assembly includes a mounting frame, which is fixed on the top plate. A telescopic push rod which is vertically arranged and self-retractable is fixed on the mounting frame. The bottom end of the telescopic push rod passes through the top plate and is connected to the corresponding outer wall of the guide block.

[0022] In the present technical solution, the second driving component includes a mounting shell, the outer wall of the mounting shell and the corresponding guide block are fixedly connected to each other, a motor is fixed inside the mounting shell, the motor is a servo motor, a driving gear is fixed on the output end of the motor, the driving gear is meshed with a rack distributed vertically, the rack passes through the top and bottom side walls of the mounting shell, and the rack is fixed on the base.

[0023] The sliding shell is arranged inside the mounting shell, and the rack is slidably connected to the sliding shell, and the sliding shell is arranged on the opposite side of the meshing position of the driving gear and the rack.

[0024] The motor drives the driving gear to rotate, and the rotating driving gear moves on the rack meshing with the driving gear, thereby driving the water treatment component to move vertically.

[0025] In the technical solution, it also includes a transmission assembly that can drive the magnetic block in the magnetic processing part to cyclically move in the horizontal direction, and the transmission assembly is arranged inside the installation frame; A slider is fixed to the outside of the magnetic block, and the slider is slidably connected to a rectangular guide rail, and the guide rail is fixed to the inner side wall of the installation frame, and the four corners of the guide rail are arc-shaped structures; The slider is a spherical structure, and the magnetic blocks between the magnetic processing parts of two adjacent layers are connected to each other through a synchronization rod.

[0026] When the water treatment component moves vertically on the surface of the heat exchange body, the magnetic block moves in a circular motion in the horizontal direction, thereby forming a magnetic field with a spiral structure. The spiral-like magnetic field causes the water flow to be continuously acted upon by the magnetic field along the spiral path, thereby enhancing the disturbance effect of ions and molecules in the water, thereby improving the efficiency of scale prevention, scale removal and water quality treatment.

[0027] In the technical solution, the transmission assembly includes a threaded rod, which is vertically arranged in the inner cavity of the installation frame and located on one side of the magnetic block, and the two ends of the threaded rod are connected to the corresponding guide plate or the top plate or the bottom plate, and the surface of the threaded rod is sleeved with a driving wheel engaged with it, and a bearing is sleeved on one end surface of the driving wheel, and the bearing is fixed to the inner wall of the installation frame through a rod; A belt-shaped transmission member is wrapped around four guide wheels at the four corners of the top of the guide rail to form a rectangular structure, and a magnetic block located in the top magnetic processing part is fixed at the bottom of the transmission member.

[0028] When the water treatment component moves, it drives the driving wheel to move on the screw rod. The driving wheel rotates under the push of the thread. The rotating driving wheel drives the transmission member to move, thereby driving the magnetic block connected thereto to move.

[0029] On the basis of being in accordance with the common sense in the art, the above-mentioned preferred conditions can be arbitrarily combined to obtain the preferred embodiments of the present invention.

[0030] The positive and progressive effects of the present invention are: A magnetic water treatment component is arranged outside the heat exchange body, through which the water flowing through the heat exchange body can be treated, and the physical and chemical properties of dissolved minerals in the water are changed to prevent mineral deposition, thus solving the problem that the brazed plate heat exchanger is difficult to clean.

[0031] Under the action of the magnetic field of the water treatment component, the magnetic mixed flow block is guided to move in the flow channel of the brazed plate heat exchanger. Through movement and collision, the magnetic ball can remove the initial scaling on the surface of the heat exchange plate and reduce the accumulation of dirt. The rolling and collision of the magnetic ball will also enhance turbulence and improve heat transfer efficiency. Through the action of the magnetic field, the crystal structure of minerals in the water is changed to reduce the tendency of scaling. At the same time, it drives the mixed flow block to move, making the cleaning process more efficient.

[0032] In summary, the technical solution in the present application realizes the combination of the physical effect of the magnetic mixing block and the chemical effect of the magnetization treatment, effectively reducing the formation and deposition of scale. The movement of the magnetic balls increases the turbulence intensity, reduces the thickness of the fluid boundary layer, improves the heat exchange efficiency, reduces the blockage and corrosion problems caused by scaling, reduces the cleaning frequency, extends the equipment operation cycle, reduces or avoids the use of chemical cleaning agents, and reduces maintenance costs and environmental impacts. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a schematic diagram of the overall planar structure of the present invention; Figure 2 It is a schematic diagram of the overall structure of the present invention with a first driving assembly; Figure 3 It is a schematic diagram of the overall structure of the present invention with a second drive assembly; Figure 4 It is a schematic diagram of the overall structure of the present invention with a transmission assembly; Figure 5 For the present invention Figure 2 A local enlarged structural schematic diagram; Figure 6 It is a partial structural schematic diagram of the present invention with a transmission assembly; Figure 7 For the present invention Figure 7 A schematic diagram of the local enlarged structure at B; Figure 8 It is a schematic diagram of the internal structure of the heat exchange body of the present invention; Fig. 9 It is a schematic diagram of the three-dimensional structure of the heat exchange plate with the mixing block of the present invention; Fig.10 It is a schematic diagram of the planar structure of a heat exchange plate with a mixing block according to the present invention; Fig.11 A schematic diagram of the planar structure of a heat exchange plate with additional response rods and a mixing block according to the present invention; Fig.12 It is a schematic diagram of the top view of the installation frame with guide rails of the present invention; Fig.13 It is a schematic diagram of the top view of the installation frame with guide wheels and guide rails of the present invention; Fig.14 It is a structural schematic diagram of the mixing flow block of the present invention; Fig.15 This is a schematic diagram of the structure in which the mixing block and the guide rod are perpendicular to each other in the present invention; Fig.16 It is a schematic diagram of the external three-dimensional structure of the heat exchange body of the present invention.

[0034] 1. Fixed frame; 11. Base; 12. Support rod; 13. Top plate; 2. heat exchange body; 21. end plate; 22. heat exchange plate; 221. flow guide protrusion; 222. water guide hole; 223. baffle plate; 224. flow guide cavity; 225. mixing block; 225a. buffer block; 225b. magnetic block; 226. guide rod; 23. connecting end pipe; 3. Water treatment assembly; 31. Mounting frame; 311. Guide rail; 312. Guide wheel; 32. Magnetic block; 321. Slider; 322. Synchronous rod; 33. Guide block; 331. Vertical plate; 332. Screw; 333. Handle; 34. Guide rod; 4. Fixed end; 5. First drive assembly; 51. Mounting frame; 52. Telescopic push rod; 6. Second driving assembly; 61. Mounting housing; 62. Motor; 63. Driving gear; 64. Rack; 65. Sliding housing; 7. Transmission assembly; 71. Threaded rod; 72. Driving wheel; 73. Bearing; 74. Transmission parts. DETAILED DESCRIPTION

[0035] The present invention is further described below by way of examples, but the present invention is not limited to the scope of the examples.

[0036] like Figure 1 and Figure 2 As shown, the brazed plate heat exchanger comprises a fixing frame 1, a heat exchange body 2 is fixed inside the fixing frame 1, the fixing frame 1 comprises a base 11, support rods 12 are fixed at the four corners of the top of the base 11, and the bottom ends of the support rods 12 are fixed on the top plate 13, the heat exchange body 2 is fixed on the base 11, and a fixing end 4 for installation is fixed at the bottom end of the base 11; The heat exchange body 2 includes two end plates 21, and a plurality of heat exchange plates 22 are stacked between the two end plates 21; A water treatment component 3, the heat exchange body 2 is covered with a water treatment component 3 that can slide vertically, and the water treatment component 3 includes a mounting frame 31, and a multi-layer magnetic treatment part is arranged on the inner wall of the mounting frame 31; The magnetic processing part includes a plurality of magnetic blocks 32 evenly distributed inside the installation frame 31 .

[0037] A plurality of magnetic flow mixing blocks 225 are arranged on the heat exchange plate 22 .

[0038] Specifically, a magnetic water treatment component 3 is provided on the outside of the heat exchange body 2, through which the water treatment component 3 can be used to treat the water flowing through the heat exchange body 2, and the physical and chemical properties of the dissolved minerals in the water are changed to prevent the minerals from depositing, thereby solving the problem that the brazed plate heat exchanger 22 is difficult to clean.

[0039] Under the action of the magnetic field of the water treatment component 3, the magnetic mixing block 225 is guided to move in the flow channel of the brazed plate heat exchanger. Through movement and collision, the magnetic ball can remove the initial scaling on the surface of the heat exchange plate 22 and reduce the accumulation of dirt. The rolling and collision of the magnetic ball will also enhance turbulence and improve the heat transfer efficiency. Through the action of the magnetic field, the crystal structure of the minerals in the water is changed to reduce the scaling tendency. At the same time, it drives the mixing block 225 to move, making the cleaning process more efficient.

[0040] In summary, the technical solution in the present application realizes the combination of the physical effect of the magnetic mixing block 225 and the chemical effect of the magnetization treatment, effectively reducing the formation and deposition of scale. The movement of the magnetic balls increases the turbulence intensity, reduces the thickness of the fluid boundary layer, improves the heat exchange efficiency, reduces the blockage and corrosion problems caused by scaling, reduces the cleaning frequency, extends the equipment operation cycle, reduces or avoids the use of chemical cleaning agents, and reduces maintenance costs and environmental impacts.

[0041] The two adjacent heat exchange plates 22 are connected by brazing, and the end plate 21 and the corresponding outermost heat exchange plate 22 are also connected by brazing. Connecting end pipes 23 are fixed at the four corners of the surface of one of the end plates 21, and water guide holes 222 are also opened at the four corners of the heat exchange plate 22. The water guide holes 222 and the corresponding connecting end pipes 23 are coaxially arranged. The above is a conventional structure of a brazed plate heat exchanger. Example

[0042] As one of the embodiments of this technical solution, Figure 8 and Fig. 9 As shown, the surface protrusions of the heat exchange plate 22 form a plurality of equally spaced "human"-shaped flow guide protrusions 221, and hot and cold water flow through the protruding flow guide protrusions 221 to form turbulence, thereby improving the efficiency of heat conduction; a baffle plate 223 is arranged between the end plates 21 of two adjacent flow guide protrusions 221, and the baffle plate 223 is fixed on the surface of the heat exchange plate 22, and the fixing method may be welding, and the two baffle plates 223 and the corresponding two flow guide protrusions 221 together form an unclosed flow guide cavity 224, and a plurality of magnetic mixing blocks 225 are arranged inside the flow guide cavity 224, and the thickness of the baffle plate 223 is less than the thickness of the flow guide protrusion 221, and the baffle plate 223 prevents the mixing block 225 from flowing out of the corresponding flow guide cavity 224, and the mixing block 225 is an ellipsoid.

[0043] Specifically, the mixing block 225 includes a magnetic block 225b and a buffer block 225a. The buffer block 225a is wrapped on the surface of the magnetic block 225b, and the buffer block 225a is in an ellipsoid shape.

[0044] The buffer block 225a is made of a soft and high temperature resistant material, and specifically can be made of one of the materials that meet the requirements, such as silicone rubber, fluororubber, TPE, etc.

[0045] The magnetic block 225b is made of magnetic material, and specifically can be selected from one of the materials that meet the requirements, such as samarium cobalt magnet, neodymium iron boron magnet, etc.

[0046] Furthermore, a guide rod 226 is provided in the guide cavity 224 . The guide rod 226 and the guide cavity 224 are arranged in parallel with each other in the length direction. The guide rod 226 passes through the mixing block 225 in the corresponding guide cavity 224 in sequence.

[0047] The guide rod 226 can make the mixing block 225 move in an orderly manner in the guide cavity along the direction of the guide rod 226 , thereby avoiding disordered collision between the mixing blocks 225 .

[0048] Specifically, the two ways of guiding the rod 226 to penetrate the mixing block 225 are as follows: Fig.11 As shown, after the guide rod 226 passes through the mixing block 225, the mixing block 225 is distributed vertically; there is an angle between the mixing block 225 and the water flow direction, which has little obstruction to the water flow and is suitable for working conditions with low water pressure.

[0049] like Fig.15 As shown, after the guide rod 226 passes through the mixing block 225, the mixing block 225 and the guide rod 226 are perpendicular to each other. The mixing block 225 is perpendicular to the water flow direction, has a greater obstruction effect on the water flow, and is suitable for working conditions with higher water pressure.

[0050] The moving magnetic block 32 drives the mixing block 225 close to it to move, and cooperates with the effect of the water flow, thereby driving the mixing block 225 to move back and forth in the guide cavity 224. Example

[0051] As one of the embodiments of this technical solution, Figure 1 and Figure 5 As shown, guide blocks 33 are fixed on the two opposite side walls outside the mounting frame 31. The guide blocks 33 are slidably connected and wrapped on the guide rod 34. The guide rod 34 is vertically arranged and fixed between the base 11 and the top plate 13 or on the support rod 12.

[0052] Provide a structural foundation for the water treatment assembly 3 to slide vertically.

[0053] A handle 333 or a driving assembly is provided on the outer wall of one of the guide blocks 33, and the handle 333 is fixed on the outer wall of the guide block 33. A vertical plate 331 is provided on the top of the handle 333, and the top of the vertical plate 331 is fixed to the extension plate on the end of the guide block 33. The vertical plate 331 is plugged with a screw rod 332 distributed in the horizontal direction, and the screw rod 332 is threadedly connected to the vertical plate 331, and the end of the screw rod 332 can overlap the surface of the guide plate.

[0054] When a handle 333 is provided on the outer wall of the guide block 33, the handle 333 is used to drive the water treatment component 3 to move vertically. At the same time, by twisting the screw rod 332, the screw rod 332 is disengaged from or abuts against the surface of the guide plate to complete the fixation of the water treatment component 3 in the vertical position.

[0055] The driving assembly includes a first driving assembly 5 driven by a rod and a second driving assembly 6 driven by a mechanical mechanism.

[0056] When necessary, the driving assembly can drive the water treatment assembly 3 to move vertically, and the moving water treatment assembly 3 can more comprehensively treat the water flowing through the heat exchange body 2.

[0057] The first driving assembly 5 includes a mounting frame 51, which is fixed on the top plate 13. A telescopic push rod 52 which is vertically arranged and self-retractable is fixed on the mounting frame 51. The bottom end of the telescopic push rod 52 passes through the top plate 13 and is connected to the outer wall of the corresponding guide block 33. The telescopic push rod 52 is electrically driven, pneumatically driven or hydraulically driven, that is, the telescopic push rod 52 can be one of an electric push rod, a pneumatic rod or a hydraulic rod.

[0058] The telescopic push rod 52 drives the water treatment assembly 3 to move vertically during the telescopic process.

[0059] The second driving assembly 6 includes a mounting shell 61, the outer wall of the mounting shell 61 and the corresponding guide block 33 are fixedly connected to each other, a motor 62 is fixed inside the mounting shell 61, the motor 62 is a servo motor 62, a driving gear 63 is fixed on the output end of the motor 62, the driving gear 63 is meshed with a rack 64 distributed vertically, the rack 64 passes through the top and bottom side walls of the mounting shell 61, and the rack 64 is fixed on the base 11.

[0060] The sliding housing 65 is disposed inside the mounting housing 61 , and the rack 64 is slidably connected to the sliding housing 65 , and the sliding housing 65 is disposed on the opposite side of the meshing position of the driving gear 63 and the rack 64 .

[0061] The motor 62 drives the driving gear 63 to rotate, and the rotating driving gear 63 moves on the rack 64 meshing with it, thereby driving the water treatment component 3 to move in the vertical direction. Example

[0062] As one of the embodiments of this technical solution, Figure 4 , Figure 6 and Figure 7 As shown, it also includes a transmission assembly 7 that can drive the magnetic block 32 in the magnetic processing part to cyclically move in the horizontal direction, and the transmission assembly 7 is arranged inside the installation frame 31; A slider 321 is fixed to the outside of the magnetic block 32. The slider 321 is slidably connected to a rectangular guide rail 311. The guide rail 311 is fixed to the inner side wall of the installation frame 31, and the four corners of the guide rail 311 are arc-shaped structures. The slider 321 is a spherical structure, and the magnetic blocks 32 between the magnetic processing parts of two adjacent layers are connected to each other through a synchronization rod 322 .

[0063] When the water treatment component 3 moves vertically on the surface of the heat exchange body 2, the magnetic block 32 moves in a circular motion in the horizontal direction, thereby forming a magnetic field similar to a spiral structure. The spiral-like magnetic field causes the water flow to be continuously acted upon by the magnetic field along the spiral path, thereby enhancing the disturbance effect of ions and molecules in the water, thereby improving the efficiency of scale prevention, scale removal and water quality treatment.

[0064] Specifically, the transmission assembly 7 includes a threaded rod 71, which is vertically arranged in the inner cavity of the installation frame 31 and located on one side of the magnetic block 32. Both ends of the threaded rod 71 are connected to the corresponding guide plate or the top plate 13 or the bottom plate. The surface of the threaded rod 71 is sleeved with a driving wheel 72 engaged therewith, and a bearing 73 is sleeved on one end surface of the driving wheel 72. The bearing 73 is fixed to the inner wall of the installation frame 31 through a rod. The belt-shaped transmission member 74 is wrapped around the four guide wheels 312 at the four corners of the top of the guide rail 311 to form a rectangular structure, and the magnetic block 32 located in the top magnetic processing part is fixed to the bottom of the transmission member 74.

[0065] When the water treatment component 3 moves, it drives the driving wheel 72 to move on the screw 332. The driving wheel 72 rotates under the push of the thread. The rotating driving wheel 72 drives the transmission member 74 to move, thereby driving the magnetic block 32 connected thereto to move.

[0066] The driving wheel 72 and the belt-shaped transmission member 74 cooperate with each other. If the driving wheel 72 is a pulley, the transmission member 74 is a transmission belt. If the driving wheel 72 is a sprocket, the transmission member 74 is a chain.

[0067] The present invention is not limited to the above-mentioned embodiments. Any changes in shape or structure are within the protection scope of the present invention. The protection scope of the present invention is defined by the attached claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principle and essence of the present invention, but these changes and modifications are within the protection scope of the present invention.

Claims

1. A brazed plate heat exchanger, comprising a fixing frame (1), wherein a heat exchange body (2) is fixed inside the fixing frame (1), the fixing frame (1) comprises a base (11), support rods (12) are fixed at the four corners of the top of the base (11), and the bottom ends of the support rods (12) are fixed to the top plate (13), the heat exchange body (2) is fixed to the base (11), and a fixed end (4) for installation is fixed to the bottom end of the base (11); The heat exchange body (2) comprises two end plates (21), and a plurality of heat exchange plates (22) are stacked between the two end plates (21), characterized in that and: A water treatment component (3), wherein the heat exchange body (2) is covered with a water treatment component (3) that can slide vertically, and the water treatment component (3) includes a mounting frame (31), and a multi-layer magnetic treatment portion is provided on the inner wall of the mounting frame (31); The magnetic processing portion includes a plurality of magnetic blocks (32) evenly distributed inside the mounting frame (31); A plurality of magnetic mixing blocks (225) are provided, wherein the mixing blocks (225) are arranged on the heat exchange plate (22).

2. The brazed plate heat exchanger according to claim 1, wherein: Two adjacent heat exchange plates (22) are connected by brazing, and the end plate (21) and the corresponding outermost heat exchange plate (22) are also connected by brazing. Connecting end tubes (23) are fixed at the four corners of the surface of one end plate (21), and water guide holes (222) are also opened at the four corners of the heat exchange plate (22). The water guide holes (222) and the corresponding connecting end tubes (23) are coaxially arranged.

3. The brazed plate heat exchanger according to claim 1, wherein: The surface protrusions of the heat exchange plate (22) form a plurality of equally spaced "human"-shaped flow guide protrusions (221); a blocking plate (223) is provided between the end plates (21) of two adjacent flow guide protrusions (221); the two blocking plates (223) and the corresponding two flow guide protrusions (221) together form an open flow guide cavity (224); a plurality of magnetic flow mixing blocks (225) are provided inside the flow guide cavity (224); the flow mixing blocks (225) are ellipsoidal.

4. The brazed plate heat exchanger according to claim 1, wherein: Guide blocks (33) are fixed on two opposite side walls outside the mounting frame (31), and the guide blocks (33) are slidably connected and wrapped around a guide rod (34). The guide rod (34) is arranged vertically and is fixed between the base (11) and the top plate (13) or on the support rod (12).

5. The brazed plate heat exchanger according to claim 4, wherein: A handle (333) or a driving assembly is provided on the outer wall of one of the guide blocks (33), the handle (333) is fixed on the outer wall of the guide block (33), a vertical plate (331) is provided on the top of the handle (333), the top of the vertical plate (331) is fixed on the extension plate on the end of the guide block (33), a screw rod (332) distributed in the horizontal direction is inserted into the vertical plate (331), the screw rod (332) and the vertical plate (331) are threadedly connected, and the end of the screw rod (332) can overlap the surface of the guide plate.

6. The brazed plate heat exchanger according to claim 5, characterized in that: The drive assembly comprises a first drive assembly (5) driven by a rod-shaped member and a second drive assembly (6) driven mechanically.

7. The brazed plate heat exchanger according to claim 6, wherein: The first drive assembly (5) includes a mounting frame (51), the mounting frame (51) being fixed on the top plate (13), a telescopic push rod (52) being arranged vertically and being self-retractable being fixed on the mounting frame (51), the bottom end of the telescopic push rod (52) passing through the top plate (13) and being connected to the outer wall of the corresponding guide block (33).

8. The brazed plate heat exchanger according to claim 6, wherein: The second drive assembly (6) includes a mounting shell (61), an outer wall of the mounting shell (61) and a corresponding guide block (33) are fixedly connected to each other, a motor (62) is fixed inside the mounting shell (61), a driving gear (63) is fixed on the output end of the motor (62), the driving gear (63) is meshed with a rack (64) distributed vertically, the rack (64) passes through the top and bottom side walls of the mounting shell (61), and the rack (64) is fixed on the base (11); The sliding shell (65) is arranged inside the mounting shell (61), and the rack (64) is slidably connected to the sliding shell (65).

9. The brazed plate heat exchanger according to claim 5, wherein: It also includes a transmission assembly (7) capable of driving the magnetic block (32) in the magnetic processing portion to cyclically move in the horizontal direction, wherein the transmission assembly (7) is arranged inside the mounting frame (31); A slider (321) is fixed to the outside of the magnetic block (32), and the slider (321) is slidably connected to a rectangular guide rail (311). The guide rail (311) is fixed to the inner side wall of the installation frame (31), and the four corners of the guide rail (311) are arc-shaped structures; The slider (321) is a spherical structure, and the magnetic blocks (32) between the magnetic processing parts of two adjacent layers are connected to each other via a synchronization rod (322).

10. The brazed plate heat exchanger according to claim 9, wherein: The transmission assembly (7) includes a threaded rod (71), the threaded rod (71) is vertically arranged in the inner cavity of the mounting frame (31), and both ends of the threaded rod (71) are connected to corresponding guide plates or top plates (13) or bottom plates. A driving wheel (72) meshing with the threaded rod (71) is sleeved on the surface of the threaded rod (71), and a bearing (73) is sleeved on one end surface of the driving wheel (72). The bearing (73) is fixed to the inner wall of the mounting frame (31) through a rod. A belt-shaped transmission member (74) is wrapped around four guide wheels (312) at the four corners of the top of the guide rail (311) to form a rectangular structure, and a magnetic block (32) located in the top magnetic processing part is fixed to the bottom of the transmission member (74).

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