A plate heat exchanger with high efficiency

Abstract

The present invention belongs to the technical field of heat exchanger equipment, and specifically is a plate-type heat exchanger with high heat exchange efficiency, comprising a sealing gasket and a heat exchange plate, wherein the sealing gasket and the heat exchange plate are arranged alternately, and a heat exchange chamber is formed between two adjacent heat exchange plates, and the sealing gasket is used to seal the heat exchange chamber; corner holes are provided at the four corners of the heat exchange plate, and two corner holes in the same group are respectively connected to an inlet pipe and an outlet pipe; and a reversing flushing component is also included, and the reversing flushing component is used to guide the flow path of the fluid in the heat exchange chamber; the present invention causes the flow path of the fluid in the heat exchange chamber to change periodically by changing the orientation of the notch on the reversing ring, and then utilizes the flushing of the fluid to flush the scale in the heat exchange chamber, and then realizes the cleaning effect of the heat exchange chamber without stopping the machine, and at the same time, adjusting the notch orientation change cycle of the reversing ring can also slow down the scaling efficiency of the inner wall of the heat exchange chamber, so that the volume of the flushed scale layer is small and convenient for discharge.

Description

Technical Field

[0001] The invention belongs to the technical field of heat exchanger equipment, in particular to a plate heat exchanger with high efficiency in heat exchange. Background Art

[0002] The plate heat exchanger is a new type of high-efficiency heat exchanger composed of a series of stacked metal sheets with a certain corrugated shape. Its structure forms thin rectangular channels between various plates, and heat exchange is carried out through the plates. It has the characteristics of high heat exchange efficiency, small heat loss, compact and light structure, small footprint, easy installation and cleaning, wide application, and long service life. Therefore, it is widely used in liquid-liquid, liquid-steam and other heat exchange operations.

[0003] Since the distance between the plates of the plate heat exchanger is short and the heat exchange area is large, scale is easily formed on the surface of the plates during use. The generation of scale has a relatively obvious negative impact on the heat transfer efficiency. Therefore, the plate heat exchanger needs to be descaled regularly during long-term use. During conventional descaling operations, the plate heat exchanger needs to be disassembled, which is not only labor-intensive and inconvenient to operate, but also the heat exchanger cannot work normally during the descaling operation.

[0004] In order to reduce the difficulty of descaling of plate heat exchangers in the related art, descaling is usually performed in a non-disassembly manner. During the operation, water is mostly used to flow forward and backward in the plate heat exchanger, and the impact of the water flow is used to cause the scale on the plates to fall off, so that the descaling effect can be achieved without disassembling the heat exchanger. For example, the Chinese patent with application number 202211169982.8, named plate heat exchanger, regularly uses forward and reverse water flow impact to perform descaling operations. However, in actual application, it is found that due to the small gap between the plates and the strong bonding force between the long-accumulated scale and the plates, although the forward and reverse water flow can impact the scale, it takes a long time of forward and reverse impact to peel off the scale, resulting in a long shutdown time for the heat exchanger to perform descaling operations, which is not convenient for normal use of the heat exchanger. In view of this, the present invention proposes a plate heat exchanger with high heat exchange efficiency to solve the above technical problems.

[0005] The information disclosed in this background technology section is only intended to deepen the understanding of the overall background technology of the present invention, and should not be regarded as acknowledging or suggesting in any form that the information constitutes the prior art known to those skilled in the art. Summary of the invention

[0006] In order to make up for the deficiencies of the prior art and solve the above-mentioned technical problems, the present invention proposes a plate heat exchanger with high heat exchange efficiency.

[0007] The technical solution adopted by the present invention to solve the technical problem is: the plate heat exchanger with high efficiency heat exchange described in the present invention comprises a sealing gasket and a heat exchange plate, wherein the sealing gasket and the heat exchange plate are arranged alternately, and a heat exchange cavity is formed between two adjacent heat exchange plates, and the sealing gasket is used to seal the heat exchange cavity;

[0008] Corner holes are provided at the four corners of the heat exchange plate, and the corner holes are divided into two groups, and the two groups of corner holes respectively penetrate the heat exchange cavity and the sealing gasket, and the two adjacent heat exchange cavities are respectively connected to the two groups of corner holes, and the two corner holes in the same group are respectively connected to the inlet pipe and the outlet pipe;

[0009] Also included is a reversing flushing assembly, the reversing flushing assembly is used to guide the flow path of the fluid in the heat exchange chamber;

[0010] The reversing flushing assembly includes a separator, and the heat exchange plate is fixedly mounted with evenly distributed separators, the separators extend to the heat exchange cavity, the separators are located between two corner holes in the same group, and the length direction of the separators is perpendicular to the line connecting the two corner holes;

[0011] A drainage groove is formed between the inner wall of the heat exchange cavity and the separator, and the two corner holes are both located in the drainage groove;

[0012] A cross flow slot is formed between two adjacent separators, and both ends of the cross flow slot are designed to be in conduction with the drainage slot;

[0013] A reversing ring is rotatably installed in each of the corner holes. The reversing ring passes through the heat exchange cavity and the sealing gasket. A notch is opened in the heat exchange cavity. The notches of the two reversing rings in the same heat exchange cavity are in opposite directions.

[0014] Preferably, an assembly ring is fixedly installed in the heat exchange chamber, the assembly ring is coaxial with the reversing ring, and the inner diameter of the assembly ring is the same as the outer diameter of the reversing ring. The assembly ring divides the drainage groove into two sections, and a symmetrical alignment groove is opened on the assembly ring. When the alignment groove is aligned with the notch, the reversing ring and the drainage groove are connected.

[0015] Preferably, the width of the portion of the drainage groove perpendicular to the length direction of the cross-flow groove changes gradually and gradually decreases along the fluid flow direction.

[0016] Preferably, the multiple reversing rings located on the same straight line are connected end to end in a clamping manner, and the reversing rings extend out of the corner holes and are rotatably sealed with the inlet pipe and the outlet pipe through bearings.

[0017] Preferably, it also includes a fixed plate and a movable plate, which are symmetrically designed and connected by bolts, the sealing gasket and the heat exchange plate are located between the fixed plate and the movable plate, a driving groove is opened on the movable plate, the reversing ring passes through and extends into the driving groove, a driving motor is fixedly installed in the driving groove, and the output end of the driving motor is connected to the reversing ring belt transmission.

[0018] Preferably, a support shaft is installed in the reversing ring, a symmetrically designed sliding groove is opened on the inner wall of the reversing ring, an insertion rod is fixedly installed on the support shaft, the insertion rod extends into the sliding groove, a telescopic bag is sleeved on the support shaft, and the telescopic bag is an annular air bag with its own spring.

[0019] Preferably, filter rings are fixedly installed on the side of the inflow pipe and the outflow pipe close to the reversing ring, the filter ring is rotationally sealed with the reversing ring, and a filter screen is fixedly installed inside the filter ring.

[0020] Preferably, the support shafts extend into the filter ring, and in the filter ring aligned with the inlet pipe, the support shaft passes through the filter net, and in the filter ring aligned with the outlet pipe, the support shaft fits the filter net, and a scraper is fixedly mounted on the support shaft.

[0021] Preferably, a collecting bottle is detachably mounted on the filter ring, and the collecting bottle is connected to the filter ring and aligned with the scraper.

[0022] The beneficial effects of the present invention are as follows:

[0023] 1. The plate heat exchanger with high efficiency of heat exchange described in the present invention guides the fluid by arranging a separator and utilizing the drainage grooves and cross flow grooves provided in the heat exchange chamber, which not only prolongs the flow path of the fluid in the heat exchange chamber, but also effectively increases the heat exchange area, thereby improving the heat exchange efficiency. At the same time, in conjunction with the change in the orientation of the notch on the reversing ring, the flow path of the fluid in the heat exchange chamber changes periodically, and then the scale in the heat exchange chamber is flushed by the flushing of the fluid, thereby achieving the cleaning effect of the heat exchange chamber without stopping the machine. At the same time, adjusting the changing cycle of the notch orientation of the reversing ring can also slow down the scaling efficiency of the inner wall of the heat exchange chamber, so that the volume of the flushed scale layer is small and convenient for discharge.

[0024] 2. The plate heat exchanger with high efficiency in heat exchange described in the present invention blocks the reversing ring during its rotation, thereby increasing the fluid pressure in the reversing ring. Subsequently, under the action of pressure, the flow rate of the fluid into the heat exchange chamber increases. During long-term heat exchange operations, the periodic change of the flow rate of the fluid in the heat exchange chamber can effectively enhance the flushing effect on the inner wall of the heat exchange chamber and reduce the scaling rate of the inner wall of the heat exchange chamber. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The present invention will be further described below in conjunction with the accompanying drawings.

[0026] Figure 1 is a stereogram of the present invention;

[0027] Figure 2 It is a three-dimensional diagram of a part of the structure of the present invention;

[0028] Figure 3 is a schematic diagram of the flow path of the fluid in the present invention;

[0029] Figure 4 is another schematic diagram of a flow path of the fluid in the present invention;

[0030] Figure 5 This is a disassembled diagram of the commutation ring;

[0031] Figure 6 This is a partial structural diagram of the reversing ring, filter ring, and inlet pipe;

[0032] In the figure: 1. sealing gasket; 11. heat exchange plate; 12. heat exchange chamber; 13. corner hole; 14. inlet pipe; 15. outlet pipe; 2. separator; 21. drainage groove; 22. cross flow groove; 23. reversing ring; 24. notch; 25. assembly ring; 26. alignment groove; 3. fixed plate; 31. movable plate; 32. drive groove; 33. drive motor; 4. support shaft; 41. sliding groove; 42. plug rod; 43. telescopic bag; 5. filter ring; 51. filter net; 52. scraper; 53. collection bottle. DETAILED DESCRIPTION

[0033] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0034] like Figures 1 to 6 As shown, a plate heat exchanger with high efficiency heat exchange according to the present invention comprises a sealing gasket 1 and a heat exchange plate 11, wherein the sealing gasket 1 and the heat exchange plate 11 are arranged alternately, and a heat exchange cavity 12 is formed between two adjacent heat exchange plates 11, and the sealing gasket 1 is used to seal the heat exchange cavity 12;

[0035] Corner holes 13 are provided at the four corners of the heat exchange plate 11, and the corner holes 13 are divided into two groups, and the two groups of corner holes 13 respectively penetrate the heat exchange cavity 12 and the sealing gasket 1, and the two adjacent heat exchange cavities 12 are respectively connected to the two groups of corner holes 13, and the two corner holes 13 in the same group are respectively connected to the inlet pipe 14 and the outlet pipe 15;

[0036] It also includes a reversing flushing assembly, which is used to guide the flow path of the fluid in the heat exchange chamber 12;

[0037] The reversing flushing assembly includes a separator 2, and the heat exchange plate 11 is fixedly mounted with evenly distributed separators 2, and the separators 2 extend into the heat exchange cavity 12, and the separators 2 are located between two corner holes 13 in the same group, and the length direction of the separators 2 is perpendicular to the line connecting the two corner holes 13;

[0038] A drainage groove 21 is formed between the inner wall of the heat exchange chamber 12 and the separator 2, and the two corner holes 13 are both located in the drainage groove 21;

[0039] A cross flow slot 22 is formed between two adjacent separators 2, and both ends of the cross flow slot 22 are designed to be in conduction with the drainage slot 21;

[0040] A reversing ring 23 is rotatably installed in each of the corner holes 13 . The reversing ring 23 passes through the heat exchange cavity 12 and the sealing gasket 1 . A notch 24 is opened in the heat exchange cavity 12 of the reversing ring 23 . The notches 24 of the two reversing rings 23 in the same heat exchange cavity 12 are in opposite directions.

[0041] When the plate heat exchanger is used for heat exchange between fluids, the fluid to be heat exchanged is input into the heat exchange cavity 12 through the inlet pipe 14. During the specific transportation, since there are four corner holes 13 on the heat exchange plate 11, and they are evenly divided into two groups, which are respectively connected with two sets of inlet pipes 14 and outlet pipes 15, during the heat exchange operation, the fluid flows into the heat exchange cavity 12 through the inlet pipe 14, and since the two adjacent heat exchange cavities 12 are sequentially connected with the two groups of corner holes 13, the fluids in the two inlet pipes 14 flow into the adjacent heat exchange cavities 12, and the heat conduction of the heat exchange plate 11 enables the heat exchange between the two fluids. At the same time, the fluid flows in the heat exchange cavity 12 and flows out through another corner hole 13 in the heat exchange cavity 12. Finally, they flow into the corresponding outflow pipes 15 respectively. In this process, in order to prevent scaling in the heat exchange chamber 12 when the fluid flows, the flow direction of the fluid is adjusted by the reversing flushing component, thereby slowing down the scaling rate of the heat exchange chamber 12. Specifically, the fluid flows into the reversing ring 23 in the corner hole 13 and flows along the reversing ring 23. Since a notch 24 is provided on the reversing ring 23, and the notch 24 is connected to the heat exchange chamber 12, the fluid flows into the heat exchange chamber 12 through the notch 24. Since a drainage groove 21 is formed between the inner wall of the heat exchange chamber 12 and the separator 2, the drainage groove 21 is annular, and the two reversing rings 23 are respectively located in the drainage groove 21. In this embodiment, the two reversing rings 23 are located on both sides. The drainage groove 21 is divided into section A and section B. In the initial state, the notch 24 of the reversing ring 23 corresponding to the inflow pipe 14 is aligned with section A of the drainage groove 21, and the fluid flows into section A of the drainage groove 21 from the notch 24 and flows along section A of the drainage groove 21. At this time, the notch 24 of the reversing ring 23 corresponding to the outflow pipe 15 is aligned with section B of the drainage groove 21, so the fluid needs to flow from section A of the drainage groove 21 to section B of the drainage groove 21. At this time, the cross-flow groove 22 opened between the separators 2 guides the fluid, causing the fluid to flow horizontally in the heat exchange chamber 12, so that the fluid flows from section A of the drainage groove 21 to section B of the drainage groove 21, and finally flows from the notch 24 into the corresponding flow under the guidance of section B of the drainage groove 21. In the reversing ring 23 of the outlet pipe 15, after the heat exchange is carried out for a period of time, the two reversing rings 23 are rotated to cause the notch 24 of the reversing ring 23 to rotate 180 degrees, thereby switching the corresponding relationship between the notch 24 of the reversing ring 23 and the A section and the B section of the drainage groove 21. When the fluid flows into the heat exchange chamber 12 again, the fluid flows in the cross flow groove 22 in the reverse direction. By periodically switching the position of the reversing ring 23, the flow direction of the fluid in the cross flow groove 22 changes periodically, thereby flushing the cross flow groove 22 and reducing the scaling rate in the cross flow groove 22. Since the cross flow groove 22 occupies most of the area of ​​the heat exchange chamber 12, cleaning the cross flow groove 22 can effectively alleviate the influence of scaling on the heat exchange efficiency.

[0042] The present invention provides a separator 2 and utilizes the drainage grooves 21 and the cross flow grooves 22 provided in the heat exchange chamber 12 to guide the fluid, which not only prolongs the flow path of the fluid in the heat exchange chamber 12, but also effectively increases the heat exchange area, thereby improving the heat exchange efficiency. At the same time, in conjunction with the change in the orientation of the notch 24 on the reversing ring 23, the flow path of the fluid in the heat exchange chamber 12 changes periodically, and then the scale in the heat exchange chamber 12 is flushed by the flushing of the fluid, thereby achieving the cleaning effect of the heat exchange chamber 12 without stopping the machine. At the same time, adjusting the change cycle of the orientation of the notch 24 of the reversing ring 23 can also slow down the scaling efficiency of the inner wall of the heat exchange chamber 12, so that the volume of the scale layer flushed down is small and easy to discharge.

[0043] As a preferred embodiment of the present invention, a mounting ring 25 is fixedly installed in the heat exchange chamber 12. The mounting ring 25 is coaxial with the reversing ring 23, and the inner diameter of the mounting ring 25 is the same as the outer diameter of the reversing ring 23. The mounting ring 25 divides the drainage groove 21 into two sections. A symmetrical alignment groove 26 is provided on the mounting ring 25. When the alignment groove 26 is aligned with the notch 24, the reversing ring 23 is connected to the drainage groove 21.

[0044] When the fluid flows from section A of the drainage groove 21 into section B, it can not only flow from the cross flow groove 22, but also flow from the gap between the reversing ring 23 and the inner wall of the heat exchange chamber 12. In order to increase the efficiency of the fluid flowing into the cross flow groove 22, an assembly ring 25 is provided, and the assembly ring 25 is used in conjunction with the reversing ring 23 to separate the drainage groove 21, that is, section A is separated from section B. At this time, when the fluid flows in sections A and B of the drainage groove 21, it can only be conducted through the cross flow groove 22, so that the flow path of the fluid is relatively fixed, thereby enhancing the heat exchange effect of the fluid in the heat exchange chamber 12.

[0045] As a preferred embodiment of the present invention, the width of the drainage groove 21 which is perpendicular to the length direction of the cross flow groove 22 gradually changes and gradually decreases along the fluid flow direction;

[0046] Since the drainage groove 21 is the gap between the inner wall of the heat exchange chamber 12 and the separator 2, the drainage groove 21 is annular as a whole, and a portion is approximately parallel to the length direction of the cross-flow groove 22, and a portion is approximately perpendicular to the length direction of the cross-flow groove 22. By adjusting the width of the drainage groove 21, the width of the portion of the cross-flow groove 22 perpendicular to the length direction of the cross-flow groove 22 gradually changes and gradually decreases along the direction of fluid flow. As the fluid flows in the drainage groove 21, the width of the drainage groove 21 decreases, which increases the fluid flow rate, thereby maintaining the impact force of the fluid on the cross-flow groove 22 and enhancing the flushing effect of the fluid on multiple cross-flow grooves 22.

[0047] As a preferred embodiment of the present invention, a plurality of the reversing rings 23 located on the same straight line are connected end to end, the reversing rings 23 extend outside the corner hole 13, and are rotatably sealed and connected to the inlet pipe 14 and the outlet pipe 15 through bearings;

[0048] The multiple reversing rings 23 are connected end to end by snapping together, and extend to the outside of the reversing plate through the corner hole 13, and are rotatably sealed and connected with the inlet pipe 14 and the outlet pipe 15, so that the multiple reversing rings 23 form a whole. When the reversing ring 23 at the end rotates, the multiple reversing rings 23 are driven to rotate synchronously, and then the directions of the notches 24 of the multiple reversing rings 23 are adjusted at the same time, thereby enhancing the convenience of switching the flow direction of the fluid in the multiple heat exchange chambers 12.

[0049] As a preferred embodiment of the present invention, it also includes a fixed plate 3 and a movable plate 31, the fixed plate 3 and the movable plate 31 are symmetrically designed and connected by bolts, the sealing gasket 1 and the heat exchange plate 11 are both located between the fixed plate 3 and the movable plate 31, the movable plate 31 is provided with a driving groove 32, the reversing ring 23 penetrates and extends into the driving groove 32, a driving motor 33 is fixedly installed in the driving groove 32, and the output end of the driving motor 33 is connected to the reversing ring 23 with a belt transmission;

[0050] By setting a fixed plate 3 and a movable plate 31, and cooperating with bolts, a plurality of heat exchange plates 11 and sealing gaskets 1 are clamped and fixed, and a driving motor 33 is set at the same time, and the reversing ring 23 is connected to the driving motor 33 by belt transmission. When it is necessary to switch the position of the notch 24 on the reversing ring 23, the driving motor 33 is started, so that the driving motor 33 drives the reversing ring 23 in the driving groove 32 to rotate, and the multiple reversing rings 23 are connected by the snap connection, so that the multiple reversing rings 23 rotate synchronously, and then the position of the notch 24 on the reversing ring 23 is adjusted, so that the flow path of the fluid in the heat exchange chamber 12 is switched. At the same time, in other embodiments of the present application, the driving motor 33 is controlled by a pre-set program, so that the driving motor 33 is started periodically, so that the plate heat exchanger can periodically adjust the flow direction of the fluid in the heat exchange chamber 12 during normal operation, thereby enhancing the flushing effect of scale in the heat exchange chamber 12.

[0051] As a preferred embodiment of the present invention, a support shaft 4 is installed in the reversing ring 23, and a symmetrically designed sliding groove 41 is opened on the inner wall of the reversing ring 23. A plug rod 42 is fixedly installed on the support shaft 4, and the plug rod 42 extends into the sliding groove 41. A telescopic bag 43 is sleeved on the support shaft 4, and the telescopic bag 43 is an annular air bag with a spring.

[0052] When the reversing ring 23 rotates, the notch 24 rotates, and when it moves from the alignment groove 26 on one side of the mounting ring 25 to the alignment groove 26 on the other side of the mounting ring 25, the notch 24 is blocked by the mounting ring 25, causing the fluid in the reversing ring 23 to be blocked. At this time, the fluid is continuously pumped in through the inlet pipe 14, causing the fluid pressure in the reversing ring 23 to increase. Under the action of pressure, the bellows 43 compresses the spring and contracts by itself. When the notch 24 is aligned with the alignment groove 26 on the other side of the mounting ring 25, the notch 24 is connected, and the fluid flows into the drainage groove 21 under the action of pressure. At this time, the bellows 43 is reset under the action of the internal spring, maintaining the high-speed flow of the fluid into the drainage groove 21, thereby enhancing the flushing effect of the fluid on the heat exchange chamber 12. In long-term heat exchange operations, the periodic change of the flow velocity of the fluid in the heat exchange chamber 12 can effectively enhance the flushing effect on the inner wall of the heat exchange chamber 12 and reduce the scaling rate of the inner wall of the heat exchange chamber 12.

[0053] As a preferred embodiment of the present invention, a filter ring 5 is fixedly installed on the side of the inflow pipe 14 and the outflow pipe 15 close to the reversing ring 23. The filter ring 5 is rotatably sealed with the reversing ring 23, and a filter screen 51 is fixedly installed inside the filter ring 5.

[0054] By arranging the filter ring 5 between the inlet pipe 14, the outlet pipe 15 and the reversing ring 23, when the fluid contains solid impurities, when the fluid moves from the inlet pipe 14 to the reversing ring 23, it can pass through the filter net 51 to intercept the impurities in the fluid. At the same time, after the fluid is flushed in the heat exchange chamber 12, it entrains the impurities and flows toward the reversing ring 23 and the outlet pipe 15. When flowing through the filter ring 5, the impurities entrained in the fluid are intercepted, thereby reducing the probability of blockage of the plate heat exchanger.

[0055] As a preferred embodiment of the present invention, the support shaft 4 extends into the filter ring 5, and in the filter ring 5 aligned with the inlet pipe 14, the support shaft 4 passes through the filter screen 51, and in the filter ring 5 aligned with the outlet pipe 15, the support shaft 4 fits the filter screen 51, and a scraper 52 is fixedly installed on the support shaft 4;

[0056] During the long-term filtration process, too much impurities accumulate on the filter screen 51, which will affect the passing efficiency of the filter screen 51. At this time, a scraper 52 is set on the support shaft 4, and in the filter ring 5 corresponding to the inlet pipe 14, the scraper 52 is located on the side of the filter screen 51 close to the inlet pipe 14, and in the filter ring 5 corresponding to the outlet pipe 15, the scraper 52 is located on the side of the filter screen 51 close to the reversing ring 23. When the reversing ring 23 rotates, the support shaft 4 and the reversing ring 23 are limited by the sliding groove 41 and the plug rod 42, so that the support shaft 4 and the reversing ring 23 rotate synchronously, thereby driving the scraper 52 to rotate on the surface of the filter screen 51, and then scraping the impurities intercepted on the filter screen 51 to prevent the impurities from clogging the filter screen 51.

[0057] As a preferred embodiment of the present invention, a collecting bottle 53 is detachably mounted on the filter ring 5, and the collecting bottle 53 is connected to the filter ring 5 and aligned with the scraper 52;

[0058] By providing a detachably mounted collecting bottle 53, the collecting bottle 53 is connected to the filter ring 5 and aligned with the scraper 52. When the scraper 52 rotates driven by the support shaft 4, the scraper 52 scrapes off the impurities. Under the action of gravity, the impurities settle into the collecting bottle 53. Regularly cleaning the collecting bottle 53 can effectively remove impurities in the heat exchange system and reduce the probability of blockage of the plate heat exchanger.

[0059] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A plate heat exchanger with high efficiency in heat exchange, comprising a sealing gasket (1) and a heat exchange plate (11), wherein the sealing gasket (1) and the heat exchange plate (11) are arranged alternately, a heat exchange cavity (12) is formed between two adjacent heat exchange plates (11), and the sealing gasket (1) is used to seal the heat exchange cavity (12); Corner holes (13) are provided at four corners of the heat exchange plate (11), and the corner holes (13) are divided into two groups, and the two groups of corner holes (13) respectively penetrate the heat exchange cavity (12) and the sealing gasket (1), and two adjacent heat exchange cavities (12) are respectively connected to the two groups of corner holes (13), and the two corner holes (13) in the same group are respectively connected to the inlet pipe (14) and the outlet pipe (15); Features: Also included is a reversing flushing assembly, the reversing flushing assembly being used to guide the flow path of the fluid in the heat exchange chamber (12); The reversing flushing assembly comprises a separator (2), the heat exchange plate (11) is fixedly mounted with evenly distributed separators (2), the separators (2) extend into the heat exchange cavity (12), the separators (2) are located between two corner holes (13) in the same group, and the length direction of the separator (2) is perpendicular to the line connecting the two corner holes (13); A drainage groove (21), wherein the drainage groove (21) is formed between the inner wall of the heat exchange chamber (12) and the separator (2), and the two corner holes (13) are both located in the drainage groove (21); A cross-flow groove (22), wherein the cross-flow groove (22) is formed between two adjacent separation sheets (2), and both ends of the cross-flow groove (22) are designed to be in conduction with the drainage groove (21); A reversing ring (23) is rotatably mounted in each of the corner holes (13); the reversing ring (23) penetrates the heat exchange cavity (12) and the sealing gasket (1); a notch (24) is formed in the heat exchange cavity (12); and the notches (24) of the two reversing rings (23) in the same heat exchange cavity (12) are in opposite directions.

2. The plate heat exchanger with high heat exchange efficiency according to claim 1, characterized in that: An assembly ring (25) is fixedly installed in the heat exchange chamber (12); the assembly ring (25) is coaxial with the reversing ring (23); the inner diameter of the assembly ring (25) is the same as the outer diameter of the reversing ring (23); the assembly ring (25) divides the drainage groove (21) into two sections; a symmetrical alignment groove (26) is provided on the assembly ring (25); when the alignment groove (26) is aligned with the notch (24), the reversing ring (23) is connected to the drainage groove (21).

3. A plate heat exchanger with high heat exchange efficiency according to claim 2, characterized in that: The width of the portion of the drainage groove (21) perpendicular to the length direction of the cross-flow groove (22) gradually changes and gradually decreases along the fluid flow direction.

4. The plate heat exchanger with high heat exchange efficiency according to claim 1, characterized in that: A plurality of the reversing rings (23) located on the same straight line are connected end to end in a snap-fitting manner. The reversing rings (23) extend outside the corner hole (13) and are rotatably sealed and connected to the inlet pipe (14) and the outlet pipe (15) via bearings.

5. The plate heat exchanger with high heat exchange efficiency according to claim 3, characterized in that: The heat exchanger further comprises a fixed plate (3) and a movable plate (31), wherein the fixed plate (3) and the movable plate (31) are symmetrically designed and connected by bolts, the sealing gasket (1) and the heat exchange plate (11) are both located between the fixed plate (3) and the movable plate (31), the movable plate (31) is provided with a driving groove (32), the reversing ring (23) penetrates through and extends into the driving groove (32), a driving motor (33) is fixedly installed in the driving groove (32), and the output end of the driving motor (33) is connected to the reversing ring (23) by belt transmission.

6. A plate heat exchanger with high heat exchange efficiency according to claim 5, characterized in that: A support shaft (4) is installed in the reversing ring (23), and a symmetrically designed sliding groove (41) is opened on the inner wall of the reversing ring (23). An insertion rod (42) is fixedly installed on the support shaft (4), and the insertion rod (42) extends into the sliding groove (41). A telescopic bag (43) is sleeved on the support shaft (4), and the telescopic bag (43) is an annular air bag with a spring.

7. A plate heat exchanger with high heat exchange efficiency according to claim 6, characterized in that: A filter ring (5) is fixedly mounted on one side of the inflow pipe (14) and the outflow pipe (15) close to the reversing ring (23); the filter ring (5) is rotationally sealedly connected to the reversing ring (23); and a filter screen (51) is fixedly mounted inside the filter ring (5).

8. The plate heat exchanger with high heat exchange efficiency according to claim 7, characterized in that: The support shafts (4) extend into the filter rings (5), and in the filter rings (5) aligned with the inflow pipe (14), the support shafts (4) penetrate the filter screen (51), and in the filter rings (5) aligned with the outflow pipe (15), the support shafts (4) fit the filter screen (51), and a scraper (52) is fixedly mounted on the support shafts (4).

9. The plate heat exchanger with high heat exchange efficiency according to claim 8, characterized in that: A collecting bottle (53) is detachably mounted on the filter ring (5); the collecting bottle (53) is connected to the filter ring (5) and aligned with the scraper (52).

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