Brazed plate heat exchanger

Abstract

The present invention provides a brazed plate heat exchanger, which includes a fixing frame, and a heat exchange main body is fixed inside the fixing frame; a water treatment assembly, and a water treatment assembly that can slide vertically is sleeved outside the heat exchange main body. The water treatment assembly includes an installation frame, and a multi-layer magnetic treatment part is arranged on the inner wall of the installation frame; the magnetic treatment part includes a plurality of magnetic force blocks evenly distributed inside the installation frame; a plurality of mixing blocks with magnetism, and the mixing blocks are arranged on the heat exchange plates. The technical solution in this application realizes the combination of the physical action of the magnetic mixing blocks and the chemical effect of magnetization treatment, effectively reduces the formation and deposition of scale, the movement of the magnetic balls increases the turbulence intensity, reduces the fluid boundary layer thickness, improves the heat exchange efficiency, reduces the problems of blockage and corrosion caused by scale, reduces the cleaning frequency, extends the equipment operation cycle, reduces or avoids the use of chemical cleaning agents, and reduces the maintenance cost and environmental impact.

Description

Technical Field

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

[0002] A brazed plate heat exchanger is an efficient and compact heat exchange device. A series of metal plates are connected into a whole by a vacuum brazing process to form alternating hot and cold fluid channels, achieving efficient heat transfer. Its corrugated plate design not only greatly increases the heat exchange area but also makes the fluid form a turbulent flow, significantly improving the heat exchange efficiency. Due to its advantages such as compact structure, light weight, high pressure and high temperature resistance, the brazed plate heat exchanger is widely used in the fields of refrigeration, air conditioning, heating, hot water, chemical industry and energy.

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

[0004] In the brazed plate heat exchanger, due to the crystallization and deposition of minerals in water, it is easy to cause fouling on the surface of the heat exchange plates. Fouling not only reduces the heat exchange efficiency but also causes channel blockage, accelerates the corrosion of the equipment, increases the cleaning frequency, and even shortens the service life of the equipment.

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

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

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

[0008] The present invention solves the above technical problems through the following technical solutions:

[0009] The present invention provides a brazed plate heat exchanger, including a fixing frame. The heat exchange main body is fixed inside the fixing frame. The fixing frame includes 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 on the top plate. The heat exchange main body is fixed on the base, and a fixing end for installation is fixed at the bottom end of the base;

[0010] The heat exchange main body includes two end plates, and a plurality of heat exchange plates are stacked between the two end plates;

[0011] A water treatment component, a water treatment component that can slide vertically is sleeved outside the heat exchange main body. 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;

[0012] The magnetic treatment part includes a plurality of magnetic blocks evenly distributed inside the mounting frame;

[0013] A plurality of mixing blocks with magnetism, the mixing blocks are arranged on the heat exchange plates.

[0014] The technical solution in this application realizes the combination of the physical action of the magnetic mixing block and the chemical effect of 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, and improves the heat exchange efficiency.

[0015] In this technical solution, two adjacent heat exchange plates are connected by brazing, and the end plate and the outermost corresponding heat exchange plate are also connected by brazing. Connecting end pipes are fixed at the four corners of the surface of one end plate, and water guiding holes are also opened at the four corners of the heat exchange plates. The water guiding holes and the corresponding connecting end pipes are coaxially arranged. The above is the conventional structure of the heat exchanger.

[0016] In this technical solution, a plurality of "herringbone"-shaped flow guiding protrusions are formed by the protrusion on the surface of the heat exchange plate. Cold and hot water flow through the protruding flow guiding protrusions to form turbulence and improve the efficiency of heat conduction; a partition plate is arranged between the end plates at the ends of two adjacent flow guiding protrusions. The partition plate is fixed on the surface of the heat exchange plate, and the fixing method can be welding. The two partition plates and the corresponding two flow guiding protrusions jointly enclose an unclosed flow guiding cavity. A plurality of magnetic mixing blocks are arranged inside the flow guiding cavity. The thickness of the partition plate is smaller than the thickness of the flow guiding protrusion, and the partition plate prevents the mixing blocks from flowing out of the corresponding flow guiding cavity. The mixing blocks are ellipsoids.

[0017] In this technical solution, the mixing block includes a magnetic block and a buffer block. The buffer block wraps the magnetic block, and the buffer block is ellipsoidal.

[0018] The buffer block is made of a soft and high-temperature resistant material, and specifically, one of the materials that meet the requirements such as silicone rubber, fluororubber, and TPE can be selected.

[0019] The magnetic block is made of a magnetic material, and specifically, one of the materials that meet the requirements such as samarium-cobalt magnets and neodymium-iron-boron magnets can be selected.

[0020] In this technical solution, guide blocks are fixed on two opposite side walls of the outer part of the installation frame. The guide blocks are slidably connected and wrapped around the guide rods. The guide rods are arranged vertically and are fixed between the base and the top plate or on the support rods.

[0021] Provide a structural basis for the vertical sliding of the water treatment component.

[0022] On the outer wall of one of the guide blocks, a handle or a driving component is provided. The handle is fixed on the outer wall of the guide block. A vertical plate is provided at the top of the handle. The top of the vertical plate is fixed on the extension plate at the end of the guide block. A screw rod distributed in the horizontal direction is inserted into the vertical plate. The screw rod is threadedly connected with the vertical plate, and the end of the screw rod can be lapped on the surface of the guide plate.

[0023] When a handle is provided on the outer wall of the guide block, the water treatment component is driven to move vertically through the handle. At the same time, by turning the screw rod, the screw rod is disengaged from or abutted against the surface of the guide plate to complete the fixation of the vertical position of the water treatment component.

[0024] In this technical solution, the driving component includes a first driving component driven by a rod-shaped member and a second driving component driven by machinery.

[0025] When needed, the driving component can drive the water treatment component to move vertically. The moving water treatment component can more comprehensively treat the water flowing through the heat exchange main body.

[0026] The first driving component includes an installation frame. The installation frame is fixed on the top plate. A vertically arranged and telescopable telescopic push rod is fixed on the installation frame. The bottom end of the telescopic push rod penetrates through the top plate and is connected to the outer wall of the corresponding guide block.

[0027] In this technical solution, the second driving component includes an installation shell. The outer wall of the installation shell is fixedly connected to the corresponding guide block. A motor is fixed inside the installation shell. The motor is a servo motor. A driving gear is fixed on the output end of the motor. The driving gear is meshed and connected with a rack distributed vertically. The rack penetrates through the top and bottom side walls of the installation shell and is fixed on the base.

[0028] A sliding shell is arranged inside the installation shell. 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.

[0029] The motor drives the driving gear to rotate. The rotating driving gear moves on the rack meshed with it, thereby driving the water treatment component to move vertically.

[0030] In this technical solution, it further includes a transmission assembly that can drive the magnetic blocks in the magnetic treatment part to move cyclically in the horizontal direction. The transmission assembly is arranged inside the installation frame;

[0031] A slider is fixed to the outside of the magnetic block. The slider is slidably connected to a rectangular guide rail. The guide rail is fixed to the inner side wall of the installation frame, and the four corners of the guide rail are of an arc-shaped structure;

[0032] The slider is of a spherical structure, and the magnetic blocks between adjacent two layers of the magnetic treatment parts are connected to each other by a synchronous rod.

[0033] When the water treatment component moves vertically on the surface of the heat exchange main body, the magnetic blocks move cyclically in the horizontal direction, thus forming a magnetic field similar to a spiral structure. The spiral-like magnetic field enables the water flow to be continuously affected by the magnetic field along the spiral path, enhancing the disturbance effect on ions and molecules in the water, thereby improving the efficiency of scale prevention, scale removal, and water quality treatment.

[0034] In this technical solution, the transmission assembly includes a threaded rod. The threaded rod is arranged vertically in the inner cavity of the installation frame and is located on one side of the magnetic block. Both ends of the threaded rod are connected to the corresponding guide plates or the top plate or the bottom plate. A driving wheel meshing with the threaded rod is sleeved on the surface of the threaded rod. A bearing is sleeved on one side end face of the driving wheel, and the bearing is fixed to the inner wall of the installation frame through a rod;

[0035] A strip-shaped transmission member. The 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 the magnetic blocks in the top-layer magnetic treatment part are fixed to the bottom of the transmission member.

[0036] When the water treatment component moves, it drives the driving wheel to move on the screw rod. The driving wheel rotates self-driven under the push of the thread. The rotating driving wheel drives the transmission member to move, thereby driving the magnetic blocks connected to it to move.

[0037] On the basis of conforming to the common knowledge in the art, the above-mentioned preferred conditions can be combined arbitrarily to obtain various preferred embodiments of the present invention.

[0038] The positive and progressive effects of the present invention are as follows:

[0039] A magnetic water treatment component is arranged outside the heat exchange main body. Through the water treatment component, the water flowing through the heat exchange main body can be treated. By changing the physical and chemical properties of the dissolved minerals in the water, mineral deposition is prevented, and the problem that the brazed plate heat exchanger is not easy to clean is solved.

[0040] Under the action of the magnetic field of the water treatment component, the magnetic mixing block is guided to move within the flow channels of the brazed plate heat exchanger. Through movement and collision, the magnetic balls can remove the initial scale on the surface of the heat exchange plates, reducing fouling accumulation. The rolling and impact of the magnetic balls 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, reducing the scaling tendency. At the same time, it drives the movement of the mixing block, making the cleaning process more efficient.

[0041] In summary, the technical solution in this application realizes the combination of the physical action of the magnetic mixing block and the chemical effect of 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 scale, reduces the cleaning frequency, extends the equipment operation cycle, reduces or avoids the use of chemical cleaning agents, and reduces the maintenance cost and environmental impact. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 It is a schematic plan view of the whole of the present invention;

[0043] Figure 2 It is a schematic overall structure view of the present invention with a first driving component;

[0044] Figure 3 It is a schematic overall structure view of the present invention with a second driving component;

[0045] Figure 4 It is a schematic overall structure view of the present invention with a transmission component;

[0046] Figure 5 For the present invention Figure 2 The partial enlarged structure view at A of;

[0047] Figure 6 It is a partial structure view of the present invention with a transmission component;

[0048] Figure 7 For the present invention Figure 7 The partial enlarged structure view at B of;

[0049] Figure 8 It is a schematic internal structure view of the heat exchange main body of the present invention;

[0050] Figure 9 It is a three-dimensional structure view of the heat exchange plate of the present invention with a mixing block;

[0051] Figure 10 It is a schematic plan view of the heat exchange plate of the present invention with a mixing block;

[0052] Figure 11 It is a schematic plan view of the heat exchange plate of the present invention with a guide rod added and with a mixing block;

[0053] Figure 12 It is a schematic top view structure diagram of the mounting frame with a guide rail according to the present invention;

[0054] Figure 13 It is a schematic top view structure diagram of the mounting frame with a guide wheel and a guide rail according to the present invention;

[0055] Figure 14 It is a schematic structure diagram of the mixing block according to the present invention;

[0056] Figure 15 It is a schematic structure diagram of the perpendicularity between the mixing block and the guide rod according to the present invention;

[0057] Figure 16 It is a schematic external three-dimensional structure diagram of the heat exchange main body according to the present invention.

[0058] 1. Fixed frame; 11. Base; 12. Support rod; 13. Top plate;

[0059] 2. Heat exchange main body; 21. End plate; 22. Heat exchange plate; 221. Flow guiding protrusion; 222. Water guiding hole; 223. Partition board; 224. Flow guiding cavity; 225. Mixing block; 225a. Buffer block; 225b. Magnetic block; 226. Guide rod; 23. Connecting end pipe;

[0060] 3. Water treatment component; 31. Mounting frame; 311. Guide rail; 312. Guide wheel; 32. Magnetic block; 321. Slide block; 322. Synchronous rod; 33. Guide block; 331. Vertical plate; 332. Screw rod; 333. Handle; 34. Guide rod;

[0061] 4. Fixed end;

[0062] 5. First driving component; 51. Mounting frame; 52. Telescopic push rod;

[0063] 6. Second driving component; 61. Mounting shell; 62. Motor; 63. Driving gear; 64. Rack; 65. Sliding shell;

[0064] 7. Transmission component; 71. Threaded rod; 72. Driving wheel; 73. Bearing; 74. Transmission part. Specific embodiments

[0065] The present invention will be further described below by way of examples, but the present invention is not limited to the scope of the examples.

[0066] Such as Figure 1 And Figure 2As shown in the figure, a brazed plate heat exchanger includes a fixing frame 1. Inside the fixing frame 1, a heat exchange body 2 is fixed. The fixing frame 1 includes a base 11. At the four corners of the top of the base 11, support rods 12 are fixed, and the bottom ends of the support rods 12 are fixed on a 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.

[0067] The heat exchange body 2 includes two end plates 21, and a number of heat exchange plates 22 are stacked between the two end plates 21.

[0068] A water treatment component 3. The water treatment component 3 that can slide vertically is sleeved outside the heat exchange body 2. The water treatment component 3 includes an installation frame 31, and a multi-layer magnetic treatment part is arranged on the inner wall of the installation frame 31.

[0069] The magnetic treatment part includes a plurality of magnetic blocks 32 evenly distributed inside the installation frame 31.

[0070] A number of magnetic mixing blocks 225. The mixing blocks 225 are arranged on the heat exchange plates 22.

[0071] Specifically, a magnetic water treatment component 3 is arranged outside the heat exchange body 2. Through the water treatment component 3, the water flowing through the heat exchange body 2 can be treated. By changing the physical and chemical properties of the dissolved minerals in the water, mineral deposition is prevented, and the problem that the brazed plate heat exchange plates 22 are not easy to clean is solved.

[0072] Under the action of the magnetic field of the water treatment component 3, the magnetic mixing blocks 225 are guided to move in the flow channels of the brazed plate heat exchanger. Through movement and collision, the magnetic balls can remove the initial scale on the surface of the heat exchange plates 22 and reduce dirt accumulation. The rolling and impact of the magnetic balls 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, and the scaling tendency is reduced. At the same time, the mixing blocks 225 are driven to move, making the cleaning process more efficient.

[0073] In summary, the technical solution in this application realizes the combination of the physical action of the magnetic mixing blocks 225 and the chemical effect of magnetization treatment, effectively reducing the formation and deposition of scale. The movement of the magnetic balls increases the turbulence intensity, reduces the fluid boundary layer thickness, improves the heat exchange efficiency, reduces the problems of blockage and corrosion caused by scale, reduces the cleaning frequency, extends the equipment operation cycle, reduces or avoids the use of chemical cleaning agents, and reduces the maintenance cost and environmental impact.

[0074] Two adjacent heat exchange plates 22 are connected by brazing, and the end plate 21 and the outermost corresponding 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 provided 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 the conventional structure of the brazed plate heat exchanger. Embodiment

[0075] As one of the embodiments of the present technical solution, as Figure 8 and Figure 9 shown, a plurality of "herringbone"-shaped flow guiding protrusions 221 are formed by the surface protrusion of the heat exchange plate 22 and are equally spaced. Cold and hot water flow through the protruding flow guiding protrusions 221 to form a turbulent flow, improving the efficiency of heat conduction; a partition plate 223 is arranged between the end plates 21 at the ends of two adjacent flow guiding protrusions 221. The partition plate 223 is fixed on the surface of the heat exchange plate 22, and the fixing method can be welding. Two partition plates 223 and the corresponding two flow guiding protrusions 221 together enclose an unclosed flow guiding cavity 224. A plurality of magnetic mixing blocks 225 are arranged inside the flow guiding cavity 224. The thickness of the partition plate 223 is less than the thickness of the flow guiding protrusion 221, and the partition plate 223 prevents the mixing blocks 225 from flowing out of the corresponding flow guiding cavity 224. The mixing blocks 225 are ellipsoids.

[0076] Specifically, the mixing block 225 includes a magnetic block 225b and a buffer block 225a. The buffer block 225a wraps the surface of the magnetic block 225b, and the buffer block 225a is in an ellipsoidal shape.

[0077] The buffer block 225a is made of a soft and high-temperature resistant material, and specifically, one of the materials that meet the requirements such as silicone rubber, fluororubber, and TPE can be selected.

[0078] The magnetic block 225b is made of a magnetic material, and specifically, one of the materials that meet the requirements such as samarium-cobalt magnets and neodymium-iron-boron magnets can be selected.

[0079] Furthermore, a guiding rod 226 is arranged in the flow guiding cavity 224. The guiding rod 226 is arranged parallel to the length direction of the flow guiding cavity 224, and the guiding rod 226 sequentially penetrates through the mixing blocks 225 in the corresponding flow guiding cavity 224.

[0080] Through the guiding rod 226, the mixing blocks 225 can move orderly in the guiding cavity along the direction of the guiding rod 226, avoiding disorderly collisions between the mixing blocks 225.

[0081] Specifically, there are two ways for the guiding rod 226 to penetrate through the mixing block 225, as Figure 11As shown, after the guiding rod 226 penetrates through the mixing flow block 225, the mixing flow block 225 is distributed vertically; there is an angle between the mixing flow block 225 and the water flow direction, and the resistance to the water flow is small, which is suitable for working conditions with relatively low water pressure.

[0082] As Figure 15 shown, after the guiding rod 226 penetrates through the mixing flow block 225, the mixing flow block 225 is perpendicular to the guiding rod 226, and the mixing flow block 225 is perpendicular to the water flow direction, with a greater resistance to the water flow, which is suitable for working conditions with relatively high water pressure.

[0083] The moving magnetic block 32 drives the adjacent mixing flow block 225 to move, and with the action of the water flow, the mixing flow block 225 is driven to reciprocate in the diversion cavity 224. Embodiment

[0084] As one of the embodiments of this technical solution, as Figure 1 and Figure 5 shown, on the outer opposite two side walls of the mounting frame 31, guiding blocks 33 are fixedly provided. The guiding blocks 33 are slidably connected and wrapped around the guiding rod 34. The guiding rod 34 is arranged vertically and is fixed between the base 11 and the top plate 13 or on the support rod 12.

[0085] It provides a structural basis for the vertical sliding of the water treatment component 3.

[0086] On the outer wall of one of the guiding blocks 33, a handle 333 or a driving assembly is provided. The handle 333 is fixed on the outer wall of the guiding block 33. On the top of the handle 333, a vertical plate 331 is provided. The top of the vertical plate 331 is fixed on the extension plate at the end of the guiding block 33. A screw rod 332 distributed horizontally is inserted into the vertical plate 331. The screw rod 332 is threadedly connected with the vertical plate 331, and the end of the screw rod 332 can abut against the surface of the guiding plate.

[0087] When the handle 333 is provided on the outer wall of the guiding block 33, the water treatment component 3 is driven to move vertically through the handle 333. At the same time, by turning the screw rod 332, the screw rod 332 is disengaged from or abuts against the surface of the guiding plate to complete the fixation of the vertical position of the water treatment component 3.

[0088] The driving assembly includes a first driving assembly 5 driven by a rod-shaped member and a second driving assembly 6 driven by machinery.

[0089] When needed, the driving assembly can drive the water treatment component 3 to move vertically. The moving water treatment component 3 can more comprehensively treat the water flowing through the heat exchange main body 2.

[0090] The first driving component 5 includes a mounting frame 51 fixed on the top plate 13. A vertically arranged and telescopable telescopic push rod 52 is fixed on the mounting frame 51. The bottom end of the telescopic push rod 52 penetrates through the top plate 13 and is connected to the outer wall of the corresponding guide block 33. The telescopic push rod 52 is driven by electricity, air pressure or hydraulic pressure, that is, the telescopic push rod 52 can be one of an electric push rod, a pneumatic rod or a hydraulic rod.

[0091] During the telescopic process of the telescopic push rod 52, it drives the water treatment component 3 to move vertically.

[0092] The second driving component 6 includes a mounting shell 61. The outer wall of the mounting shell 61 is fixedly connected to the corresponding guide block 33. 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 penetrates through the top and bottom side walls of the mounting shell 61 and is fixed on the base 11.

[0093] A sliding shell 65 is arranged inside the mounting shell 61. The rack 64 is slidably connected to the sliding shell 65, and the sliding shell 65 is arranged on the opposite side of the meshing position of the driving gear 63 and the rack 64.

[0094] The motor 62 drives the driving gear 63 to rotate. The rotating driving gear 63 moves on the rack 64 meshed with it, thereby driving the water treatment component 3 to move vertically. Embodiment

[0095] As one of the embodiments in this technical solution, as Figure 4 、 Figure 6 and Figure 7 shown, it further includes a transmission component 7 that can drive the magnetic blocks 32 in the magnetic treatment part to move circularly in the horizontal direction. The transmission component 7 is arranged inside the mounting frame 31;

[0096] An external slider 321 is fixed to the magnetic block 32. The slider 321 is slidably connected to a rectangular guide rail 311. The guide rail 311 is fixed on the inner side wall of the mounting frame 31, and the four corners of the guide rail 311 are of an arc structure;

[0097] The slider 321 is of a spherical structure, and the magnetic blocks 32 between adjacent two layers of the magnetic treatment part are connected to each other through a synchronizing rod 322.

[0098] When the water treatment component 3 moves along the vertical direction on the surface of the heat exchange main body 2, the magnetic blocks 32 move in a cyclic manner in the horizontal direction, thus forming a magnetic field similar to a spiral structure. The spiral-like magnetic field enables the water flow to be continuously affected by the magnetic field along the spiral path, enhancing the perturbation effect of ions and molecules in the water, thereby improving the efficiency of scale prevention, scale removal, and water quality treatment.

[0099] Specifically, the transmission component 7 includes a threaded rod 71. The threaded rod 71 is vertically arranged in the inner cavity of the installation frame 31 and is located on one side of the magnetic block 32. Both ends of the threaded rod 71 are connected to the corresponding guide plates or the top plate 13 or the bottom plate. A driving wheel 72 meshing with the threaded rod 71 is sleeved on the surface of the threaded rod 71. A bearing 73 is sleeved on one side end face of the driving wheel 72, and the bearing 73 is fixed on the inner wall of the installation frame 31 through a rod.

[0100] A strip-shaped transmission member 74 wraps around 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 in the top-layer magnetic treatment part is fixed to the bottom of the transmission member 74.

[0101] When the water treatment component 3 moves, it drives the driving wheel 72 to move on the screw rod 332. The driving wheel 72 rotates self-driven 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 to it to move.

[0102] The driving wheel 72 and the strip-shaped transmission member 74 cooperate with each other. If the driving wheel 72 is a belt pulley, the transmission member 74 is a transmission belt. If the driving wheel 72 is a sprocket, the transmission member 74 is a chain.

[0103] The present invention is not limited to the above embodiments. No matter what changes are made in its shape or structure, they all fall within the protection scope of the present invention. The protection scope of the present invention is defined by the appended 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 all fall within the protection scope of the present invention.

Claims

1. Brazed plate heat exchanger, comprising a fixing frame (1), inside which a heat exchange body (2) is fixed. The fixing frame (1) includes a base (11), at the four corners of the top of the base (11), support rods (12) are fixed, and the tops of the support rods (12) are fixed on a 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 number of heat exchange plates (22) are stacked between the two end plates (21). It is characterized in that: A water treatment component (3), the outside of the heat exchange body (2) is sleeved with a water treatment component (3) that can slide vertically. The water treatment component (3) includes an installation frame (31), and a multi-layer magnetic treatment part is arranged on the inner wall of the installation frame (31). The magnetic treatment part includes a plurality of magnetic force blocks (32) evenly distributed inside the installation frame (31). A number of mixed flow blocks (225) with magnetism, the mixed flow blocks (225) are arranged on the heat exchange plates (22). The surface of the heat exchange plate (22) protrudes to form a plurality of "herringbone"-shaped diversion protrusions (221) distributed at equal intervals. A partition plate (223) is arranged between the end plates (21) at the ends of two adjacent diversion protrusions (221). A non-closed diversion cavity (224) is jointly formed between the two partition plates (223) and the corresponding two diversion protrusions (221). A plurality of magnetic mixed flow blocks (225) are arranged inside the diversion cavity (224), and the mixed flow blocks (225) are ellipsoids. The mixed flow block (225) includes a magnetic block (225b) and a buffer block (225a), the buffer block (225a) wraps the surface of the magnetic block (225b), and the buffer block (225a) is in an ellipsoidal shape. A guiding rod (226) is arranged in the diversion cavity (224), the guiding rod (226) is arranged parallel to the length direction of the diversion cavity (224), and the guiding rod (226) sequentially passes through the mixed flow blocks (225) in the corresponding diversion cavity (224).

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 outermost heat exchange plate (22) corresponding to it are also connected by brazing. At the four corners of the surface of one end plate (21), connecting end pipes (23) are fixed, and water guiding holes (222) are also opened at the four corners of the heat exchange plates (22). The water guiding holes (222) and the corresponding connecting end pipes (23) are coaxially arranged.

3. The brazed plate heat exchanger according to claim 1, characterized in that: On the two opposite side walls of the outside of the installation frame (31), guiding blocks (33) are fixed. The guiding blocks (33) are slidably connected and wrapped on a guiding rod (34). The guiding rod (34) is arranged vertically, and the guiding rod (34) is fixed between the base (11) and the top plate (13) or on the support rods (12).

4. The brazed plate heat exchanger according to claim 3, characterized in that: A handle (333) or a driving component is provided on the outer wall of one of the guiding blocks (33). The handle (333) is fixed on the outer wall of the guiding block (33). A vertical plate (331) is provided at the top of the handle (333). The top of the vertical plate (331) is fixed on the extension plate at the end of the guiding block (33). A screw rod (332) distributed in the horizontal direction is inserted into the vertical plate (331). The screw rod (332) is in threaded connection with the vertical plate (331), and the end of the screw rod (332) can be lapped on the surface of the guiding plate.

5. The brazed plate heat exchanger according to claim 4, wherein: The driving component includes a first driving component (5) driven by a rod-shaped member and a second driving component (6) driven by machinery.

6. The brazed plate heat exchanger according to claim 5, wherein: The first driving component (5) includes a mounting frame (51). The mounting frame (51) is fixed on the top plate (13). A vertically arranged and telescopable telescopic push rod (52) is fixed on the mounting frame (51). The bottom end of the telescopic push rod (52) penetrates through the top plate (13) and is connected to the outer wall of the corresponding guiding block (33).

7. The brazed plate heat exchanger according to claim 6, characterized in that: The second driving component (6) includes a mounting shell (61). The outer wall of the mounting shell (61) is fixedly connected to the corresponding guiding block (33). A motor (62) is fixed inside the mounting shell (61). The motor (62) has a driving gear (63) fixed to its output end. The driving gear (63) is meshed and connected with a rack (64) distributed vertically. The rack (64) penetrates through the top and bottom side walls of the mounting shell (61), and the rack (64) is fixed on the base (11). A sliding shell (65) is arranged inside the mounting shell (61), and the rack (64) is slidably connected to the sliding shell (65).

8. The brazed plate heat exchanger according to claim 4, wherein: It further includes a transmission component (7) that can drive the magnetic force block (32) in the magnetic treatment part to move cyclically in the horizontal direction. The transmission component (7) is arranged inside the mounting frame (31). A slider (321) is fixed to the outside of the magnetic force block (32). The slider (321) is slidably connected to a rectangular guide rail (311). The guide rail (311) is fixed on the inner side wall of the mounting frame (31), and the four corners of the guide rail (311) are of an arc-shaped structure. The slider (321) is of a spherical structure, and the magnetic force blocks (32) between adjacent two layers of the magnetic treatment part are connected to each other through a synchronous rod (322).

9. The brazed plate heat exchanger according to claim 8, wherein: The transmission component (7) includes a threaded rod (71). The threaded rod (71) is arranged vertically in the inner cavity of the mounting frame (31). The two ends of the threaded rod (71) are connected to the corresponding guiding plates or the top plate (13) or the bottom plate. A driving wheel (72) meshed with the threaded rod (71) is sleeved on the surface of the threaded rod (71). A bearing (73) is sleeved on one side end face of the driving wheel (72). The bearing (73) is fixed to the inner wall of the mounting frame (31) through a rod. The 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 the magnetic force blocks (32) located in the top-layer magnetic treatment part are fixed to the bottom of the transmission member (74).

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