Protective plate heat exchanger

Abstract

The invention belongs to the field of plate heat exchangers, and particularly relates to a protective plate heat exchanger which comprises a fixed seat plate and a movable clamping plate, the movable clamping plate and the fixed seat plate are arranged in parallel, and a plurality of screws are installed on the side, close to the movable clamping plate, of the fixed seat plate and penetrate through the movable clamping plate. The outer side of the screw is in threaded connection with a nut, two input pipes and two cooling pipes are installed at the front end of the fixed seat plate, the spiral protective cover is arranged on the outer sides of the heat exchange plates, the spiral protective cover is also in a closed state after the multiple heat exchange plates are extruded and attached, and the spiral protective cover can be unfolded after the movable clamping plate is opened. In this way, the dismounting process of the device cannot be hindered, meanwhile, even if the number of the heat exchange plate spiral shields is increased or decreased, the heat exchange plates can be adaptively wrapped with the heat exchange plate spiral shields, in this way, when liquid is prevented from leaking outwards or the heat exchange plates are broken open, internal parts are wrapped with the spiral shields, and therefore the heat exchange plates are prevented from being damaged. And the influence on the outside is reduced.

Description

Technical Field

[0001] The invention belongs to the field of plate heat exchangers, in particular to a protective plate heat exchanger. Background Art

[0002] The plate heat exchanger is a high-efficiency heat exchanger made of a series of metal sheets with a certain corrugated shape. Thin rectangular channels are formed between various plates, and heat is exchanged through the plates. Under the same pressure loss, its heat transfer coefficient is 3-5 times higher than that of the tube heat exchanger, and the floor space is one-third of that of the tube heat exchanger. The heat recovery rate can be as high as more than 90%.

[0003] A patent application with publication number CN105066751A discloses a plate heat exchanger. Adjacent plates of the plate heat exchanger are provided with a first sealing ring and a second sealing ring. When one side thereof is matched, the first sealing ring relative to the other forms a steam cavity, and the second sealing ring relative to the other forms a seawater cavity. Steam enters the steam cavity through a heat source inlet, and seawater enters the seawater cavity through a seawater inlet. The plate does not need to be very long, and the volume of the heat exchanger can be effectively reduced compared to a tubular heat exchanger, thereby reducing the footprint of a seawater desalination multi-effect evaporation system.

[0004] Traditional heat exchangers generally lack protective structures. Multiple heat exchange plates are combined together by extrusion, while the outer sides of the multiple heat exchange plates lack protection. The working process of the plate heat exchanger is to continuously pass cooling water and the solution to be cooled into the heat exchange plates. During long-term operation, the sudden change of water pressure or damage to the heat exchange plates may cause liquid to rush out from all sides of the heat exchange plates, causing damage to surrounding equipment or operators. However, the number of heat exchange plates between plate heat exchangers is uncertain. Whenever the number of heat exchange plates changes, the thickness of the overall plate heat exchanger will change. In order to ensure the protective effect, the traditional protective structure cannot change the volume, and is therefore not suitable for plate heat exchangers.

[0005] To this end, the present invention provides a protective plate heat exchanger. Summary of the invention

[0006] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0007] The technical solution adopted by the present invention to solve its technical problem is: a protective plate heat exchanger described in the present invention comprises a fixed seat plate and a movable clamping plate, the movable clamping plate and the fixed seat plate are arranged in parallel, a plurality of screws are installed on the side of the fixed seat plate close to the movable clamping plate, the screws penetrate the movable clamping plate, the outer side of the screws are threadedly connected with nuts, a plurality of heat exchange plates are arranged between the fixed seat plate and the movable clamping plate, two input pipes and two cooling pipes are installed at the front end of the fixed seat plate, a spiral shield is arranged on the outer side of the plurality of heat exchange plates, the spiral shield changes volume under the action of external force, and the spiral shield is located in the area surrounded by the plurality of screws;

[0008] Through the setting of the spiral guard, the fixed seat plate will clamp the multiple heat exchange plates in the middle with the movable clamp, and cooling water will be introduced from one of the cooling pipes, and the cooling water will be recovered from the other cooling pipe. The liquid to be cooled will be introduced into one of the input pipes, and the cooled liquid will be recovered from the other input pipe. The two liquids will exchange heat in the multiple heat exchange plates without contacting each other. The movable clamp is controlled by rotating the nut to compress the multiple heat exchange plates, or loosen the multiple heat exchange plates. The spiral guard is set on the outside of the heat exchange plates. After the multiple heat exchange plates are squeezed and fitted, the spiral guard is also in a closed state. When the movable clamp is opened, the spiral guard will unfold, which will not hinder the disassembly process of the device. At the same time, even if the heat exchange plates are increased or reduced, the spiral guard can be adaptively wrapped around the outside of the multiple heat exchange plates. In this way, when a leakage problem occurs, the liquid can be prevented from leaking out, or when the heat exchange plates collapse, the internal parts can be wrapped inside the spiral guard to reduce the impact on the outside.

[0009] Preferably, the spiral guard is formed by spirally bending a long strip of metal material, and its overall shape is a spring with different diameters at both ends. The diameter of the spiral guard close to one end of the fixed seat plate is larger than the diameter of the other end. When the spiral guard is squeezed, the bent metal strips formed by the spring-shaped spiral guard squeeze each other to form a truncated cone state without gaps. Since the diameters at both ends of the spiral guard are different, the diameters of adjacent metal strips are also different, so that among the adjacent annular metal strips, the metal strip ring with a small diameter can be pressed into the metal strip ring with a large diameter. Under extreme extrusion, the spiral guard can even be pressed into a disc. Through this arrangement, when the number of heat exchange plates is added to the maximum, the adjacent metal strips in the spiral guard are tailored and fitted. When the number of heat exchange plates is small, the adjacent metal strips partially overlap each other under the action of extrusion. Through this arrangement, whether the number of heat exchange plates is increased or decreased, the spiral guard can be guaranteed to protect the outside of the heat exchange plates, and it relies on the fact that the spiral guard is adaptively changed without the need for deliberate adjustment.

[0010] Preferably, the cross-section of the spiral guard is rectangular, and the outer edge of the spiral guard is wrapped with an elastic sealing gasket. Binding rings are fixedly connected to the opposite sides of the fixed seat plate and the movable splint, and the binding ring is sleeved on the outer side of the spiral guard. The outer side of the binding ring is provided with a plurality of bolts for fixing the binding ring and the spiral guard. The rectangular cross-section allows the adjacent metal strips to fit together with a larger fitting area than the circular cross-section, so that the sealing effect is better, and the elastic sealing gasket can be deformed appropriately to further improve the sealing effect. Due to the presence of the sealing gasket, when adjacent metal strips overlap with each other, a large friction force needs to be overcome, so that it can be ensured that, under the action of pressure, the adjacent metal strips of the spiral guard first fit each other and then overlap each other, and no gaps will appear. The bolts are used to fix the ends of the binding ring and the spiral guard. When the heat exchange plate needs to be disassembled, the bolts are removed and the movable splint and the spiral guard are pulled out from one side of the screw.

[0011] Preferably, the fixed seat plate, movable splint and heat exchange plate are all arranged in a disc shape, and a plurality of screws are distributed on the outer side of the fixed seat plate near the edge. The bottoms of the fixed seat plate and the movable splint are fixedly connected to support seats, and a center column is arranged through the middle of the fixed seat plate, the movable splint and the heat exchange plate. The disc-shaped arrangement allows the spiral guard to be more adapted to the device and to more appropriately surround the outer sides of the plurality of heat exchange plates. The support seat is used to ensure the placement stability of the device, and the center column is used to fix the middle of the plurality of heat exchange plates.

[0012] Preferably, a through hole adapted to the center column is opened in the middle of the heat exchange plate, holes adapted to the positions of the input pipe and the cooling pipe are opened at the four corners of the heat exchange plate, and sealing rings are fixed to the outer edge of the heat exchange plate and the outer edge of the through hole. The through hole in the heat exchange plate is used to pass through the center column, and there is a protrusion on the edge of the center column to ensure that the heat exchange plate will not rotate or shift after being sleeved, and the sealing ring is used to ensure that there will be no leakage at the edge after multiple heat exchange plates are fitted.

[0013] Preferably, an observation hole is opened at the front end of the fixed seat plate, a glass plate is arranged in the observation hole, pressure gauges connected to the inside are arranged on the outside of the input pipe and the cooling pipe, and a drain valve is installed at the bottom of the restraining ring. The observation hole can be used to observe whether there is leakage inside the spiral guard, and the pressure gauge is used to observe whether there is a significant change in liquid pressure during the liquid flow process, so as to judge whether the work is proceeding normally. When liquid accumulates inside the spiral guard, it is discharged to the outside through the drain valve.

[0014] Preferably, a central gear is rotatably connected to the middle part of a side of the movable splint away from the fixed seat plate, and the middle part of the central gear is hollowed out, and a plurality of synchronous gears are meshed on the outer side of the central gear. The synchronous gear is rotatably connected to the movable splint, and a linkage assembly is arranged between the synchronous gear and the nut. A driving assembly is arranged on the outer side of the central gear, and the central gear is driven to rotate by the driving assembly. The central gear simultaneously drives a plurality of synchronous gears to rotate in the same direction and at the same angle, and then drives a plurality of nuts to rotate under the drive of the linkage assembly. In this way, only the central gear can be driven, and a plurality of nuts can be driven to tighten the nuts at the same time. Since the spiral guard has a large resistance when being squeezed, the movable splint can be slowly and stably and effectively moved close to the fixed seat plate through this method of simultaneously tightening and pushing, making the installation process of the device simple and convenient.

[0015] Preferably, the driving assembly includes a gear ring, a protective cover for covering the synchronous gear is fixedly connected to the outer side of the movable splint, the gear ring passes through the protective cover, the center of the protective cover is located and is fixed to the movable splint through a round rod, a driving gear is meshed on the outer side of the gear ring, the diameter of the driving gear is smaller than the gear ring, an operating rod is arranged on the outer side of the driving gear, the driving gear is driven to rotate by the operating rod, the driving gear drives the gear ring to rotate, and the gear ring drives the center gear to rotate, because the diameter of the driving gear is much smaller than the gear ring, it is a process of reducing speed and saving effort, so that the installation process of the movable splint can be completed relatively easily.

[0016] Preferably, the linkage assembly includes a transmission chain, a pinion is fixedly connected to the middle part of the synchronous gear, the middle part of the nut is concave, a circle of blocks is fixedly connected to the concave part, and the transmission chain is sleeved on the concave part of the middle part of the pinion and the nut. When the synchronous gear rotates, the pinion is driven to rotate, and the pinion transmits the rotation to the nut through the transmission chain. As the nut rotates, the movable splint is moved toward the fixed seat plate.

[0017] Preferably, the vertical cross-section of the nut is polygonal, a polygonal socket is provided in the middle of the driving gear, the operating rod is transmission-connected to the driving gear through the polygonal socket, and the operating rod is a retractable structure. When a problem occurs in the linkage assembly or the power assembly, the most primitive means can be used, such as a wrench, to directly rotate the outside of the nut to complete the disassembly of the device. The operating rod can be separated from the driving gear. When the movable splint is installed in place, the operating rod is extended and one end is overlapped on the outside of one of the screws. In this way, when the nut becomes loose during vibration of the device, the nut will drive the synchronous gear to rotate in the reverse direction. However, since the operating rod restricts the driving gear, the center gear cannot rotate, thereby reducing the problem of equipment loosening caused by vibration.

[0018] The beneficial effects of the present invention are as follows:

[0019] 1. The protective plate heat exchanger described in the present invention, through the setting of the spiral shield, the fixed seat plate clamps the multiple heat exchange plates in the middle with the movable clamping plate, cools water from one of the cooling pipes, and recovers the cooling water from the other cooling pipe, passes the liquid to be cooled into one of the input pipes, and recovers the cooled liquid from the other input pipe, and the two liquids exchange heat in the multiple heat exchange plates without contacting each other, and the movable clamping plate is controlled by rotating the nut to press the multiple heat exchange plates, or to loosen the multiple heat exchange plates, and the spiral shield is set on the outside of the heat exchange plates, and after the multiple heat exchange plates are squeezed and fitted, the spiral shield is also in a closed state, and when the movable clamping plate is opened, the spiral shield will unfold, which will not hinder the disassembly process of the device, and even if the heat exchange plates are increased or reduced, the spiral shield can be adaptively wrapped around the outside of the multiple heat exchange plates, so that when leakage occurs, the liquid can be prevented from leaking out, or when the heat exchange plates collapse, the internal parts can be wrapped inside the spiral shield to reduce the impact on the outside.

[0020] 2. In the protective plate heat exchanger described in the present invention, when the spiral guard is squeezed, the bent metal strips formed by the spring-shaped spiral guard are squeezed against each other to form a truncated cone state without gaps, and since the diameters of the two ends of the spiral guard are different, the diameters of adjacent metal strips are also different, so that among the adjacent annular metal strips, the metal strip ring with a smaller diameter can be pressed into the metal strip ring with a larger diameter. Under extreme squeezing, the spiral guard can even be pressed into a disc. With this arrangement, when the number of heat exchange plates is added to the maximum, the adjacent metal strips in the spiral guard are tailored and fitted together. When the number of heat exchange plates is small, the adjacent metal strips partially overlap each other under the action of squeezing. With this arrangement, no matter whether the number of heat exchange plates is increased or decreased, the spiral guard can be guaranteed to protect the outside of the heat exchange plates, and it relies on the adaptive change of the spiral guard without the need for deliberate adjustment. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention will be further described below in conjunction with the accompanying drawings.

[0022] Figure 1 is a first perspective stereogram of the present invention;

[0023] Figure 2 is a second viewing angle stereogram of the present invention;

[0024] Figure 3 is a three-dimensional diagram of the spiral guard and the movable clamping plate of the present invention;

[0025] Figure 4 is a three-dimensional diagram of the movable clamping plate and the protective cover of the present invention;

[0026] Figure 5 is a stereogram of the central gear and the synchronous gear of the present invention;

[0027] Figure 6 is a three-dimensional diagram of the heat exchange plate of the present invention;

[0028] In the figure: 1. fixed seat plate; 2. movable clamping plate; 3. screw; 5. input pipe; 6. cooling pipe; 7. center column; 8. restraining ring; 9. bolt; 10. protective cover; 11. spiral shield; 12. heat exchange plate; 13. nut; 14. gear ring; 15. driving gear; 16. operating lever; 17. synchronous gear; 18. transmission chain; 19. center gear; 20. sealing ring; 21. through hole. DETAILED DESCRIPTION

[0029] 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.

[0030] like Figures 1 to 6 As shown, a protective plate heat exchanger described in an embodiment of the present invention comprises a fixed seat plate 1 and a movable clamping plate 2, wherein the movable clamping plate 2 and the fixed seat plate 1 are arranged in parallel, a plurality of screws 3 are installed on the side of the fixed seat plate 1 close to the movable clamping plate 2, the screws 3 penetrate the movable clamping plate 2, and the outer side of the screws 3 is threadedly connected with a nut 13, a plurality of heat exchange plates 12 are arranged between the fixed seat plate 1 and the movable clamping plate 2, two input pipes 5 and two cooling pipes 6 are installed at the front end of the fixed seat plate 1, and a spiral shield 11 is arranged on the outer side of the plurality of heat exchange plates 12, wherein the spiral shield 11 changes its volume under the action of an external force, and the spiral shield 11 is located in the area surrounded by the plurality of screws 3;

[0031] When working, conventional heat exchangers generally lack protective structures. Multiple heat exchange plates 12 are combined together by extrusion, and the outer sides of the multiple heat exchange plates 12 lack protection. The working process of the plate heat exchanger is to continuously pass cooling water and the solution to be cooled into the heat exchange plates 12. During long-term working, the liquid may rush out from the surroundings of the heat exchange plates 12 due to sudden changes in water pressure or damage to the heat exchange plates 12, causing damage to surrounding equipment or operators. However, the number of heat exchange plates 12 between the plate heat exchangers is uncertain. Whenever the number of heat exchange plates 12 changes, the thickness of the entire plate heat exchanger will change. In order to ensure the protective effect, the traditional protective structure cannot change the volume, so it is not suitable for plate heat exchangers.

[0032] Through the setting of the spiral shield 11, the fixed seat plate 1 clamps the multiple heat exchange plates 12 in the middle of the movable clamping plate 2, and the cooling water is introduced from one of the cooling pipes 6, and the cooling water is recovered from the other cooling pipe 6. The liquid to be cooled is introduced into one of the input pipes 5, and the cooled liquid is recovered from the other input pipe 5. The two liquids exchange heat in the multiple heat exchange plates 12 without contacting each other. The movable clamping plate 2 is controlled by rotating the nut 13 to press the multiple heat exchange plates 12, or to loosen the multiple heat exchange plates 12. The spiral shield 11 is set On the outside of the heat exchange plate 12, after multiple heat exchange plates 12 are squeezed and fitted, the spiral shield 11 is also in a closed state. When the movable clamp 2 is opened, the spiral shield 11 will unfold, which will not hinder the disassembly process of the device. At the same time, even if the heat exchange plates 12 are increased or reduced, the spiral shield 11 can be adaptively wrapped around the outside of multiple heat exchange plates 12. In this way, when a leakage problem occurs, the liquid can be prevented from leaking out, or when the heat exchange plate 12 collapses, the internal parts can be wrapped inside the spiral shield 11 to reduce the impact on the outside.

[0033] like Figures 1 to 6 As shown, the spiral shield 11 is formed by spirally bending a long strip of metal material, and the overall shape is a spring with different diameters at both ends. The diameter of the spiral shield 11 at one end close to the fixed base plate 1 is larger than the diameter at the other end;

[0034] During operation, when the spiral guard 11 is squeezed, the bent metal strips formed by the spring-shaped spiral guard 11 squeeze each other to form a truncated cone state without gaps, and since the diameters of the two ends of the spiral guard 11 are different, the diameters of adjacent metal strips are also different, so that among the adjacent annular metal strips, the metal strip ring with a smaller diameter can be pressed into the metal strip ring with a larger diameter. Under extreme squeezing, the spiral guard 11 can even be pressed into a disc. Through this arrangement, when the number of heat exchange plates 12 is added to the maximum, the adjacent metal strips in the spiral guard 11 are tailored and fitted together. When the number of heat exchange plates 12 is small, the adjacent metal strips partially overlap each other under the action of squeezing. Through this arrangement, whether the number of heat exchange plates 12 is increased or decreased, the spiral guard 11 can be guaranteed to protect the outside of the heat exchange plate 12, and it relies on the spiral guard 11 to change adaptively without the need for deliberate adjustment.

[0035] like Figures 1 to 6 As shown, the cross section of the spiral shield 11 is rectangular, the outer edge of the spiral shield 11 is wrapped with an elastic sealing pad, the fixed seat plate 1 and the movable clamping plate 2 are fixedly connected with a binding ring 8 on the opposite side, the binding ring 8 is sleeved on the outer side of the spiral shield 11, and the outer side of the binding ring 8 is provided with a plurality of bolts 9 for fixing the binding ring 8 and the spiral shield 11;

[0036] During operation, the rectangular cross-section allows the adjacent metal strips to fit together over a larger area than a circular cross-section, resulting in a better sealing effect. The elastic sealing gasket can be deformed appropriately to further improve the sealing effect. Due to the presence of the sealing gasket, when adjacent metal strips overlap each other, a greater friction force needs to be overcome. This ensures that, under the action of pressure, the adjacent metal strips of the spiral shield 11 first fit together and then overlap each other without any gaps. The bolts 9 are used to fix the restraining ring 8 and the ends of the spiral shield 11. When the heat exchange plate 12 needs to be disassembled, the bolts 9 are removed, and the movable clamping plate 2 and the spiral shield 11 are pulled out from one side of the screw 3.

[0037] like Figures 1 to 6 As shown, the fixed seat plate 1, the movable clamping plate 2 and the heat exchange plate 12 are all arranged in a disc shape, and a plurality of screws 3 are distributed on the outer side of the fixed seat plate 1 near the edge. The bottoms of the fixed seat plate 1 and the movable clamping plate 2 are fixedly connected with support seats, and a central column 7 is arranged through the middle of the fixed seat plate 1, the movable clamping plate 2 and the heat exchange plate 12;

[0038] When working, the disc-shaped setting allows the spiral shield 11 to be more suitable for the device and more appropriately surround the outer sides of multiple heat exchange plates 12. The support seat is used to ensure the placement stability of the device, and the central column 7 is used to fix the middle of multiple heat exchange plates 12.

[0039] like Figures 1 to 6 As shown, a through hole 21 adapted to the center column 7 is opened in the middle of the heat exchange plate 12, and holes adapted to the positions of the input pipe 5 and the cooling pipe 6 are opened at the four corners of the heat exchange plate 12. The outer edge of the heat exchange plate 12 and the outer edge of the through hole 21 are fixedly connected with a sealing ring 20. During operation, the through hole 21 in the heat exchange plate 12 is used to pass through the center column 7. There is a protrusion on the edge of the center column 7 to ensure that the heat exchange plate 12 will not rotate or shift after being sleeved. The sealing ring 20 is used to ensure that after multiple heat exchange plates 12 are fitted, there will be no leakage at the edge.

[0040] like Figures 1 to 6 As shown, the front end of the fixed seat plate 1 is provided with an observation hole, in which a glass plate is arranged, the outsides of the input pipe 5 and the cooling pipe 6 are provided with pressure gauges communicating with the inside, and the bottom of the restraining ring 8 is provided with a drain valve;

[0041] During operation, the observation hole can be used to observe whether there is leakage inside the spiral shield 11. The pressure gauge is used to observe whether there is a significant change in the liquid pressure during the liquid flow process, so as to judge whether the operation is proceeding normally. When liquid accumulates inside the spiral shield 11, it is discharged to the outside through the drain valve.

[0042] like Figures 1 to 6As shown, a central gear 19 is rotatably connected to the middle of the side of the movable splint 2 away from the fixed base plate 1, the middle of the central gear 19 is hollowed out, a plurality of synchronous gears 17 are meshed on the outer side of the central gear 19, the synchronous gears 17 are rotatably connected to the movable splint 2, a linkage assembly is arranged between the synchronous gear 17 and the nut 13, and a driving assembly is arranged on the outer side of the central gear 19;

[0043] During operation, the center gear 19 is driven to rotate through the driving component, and the center gear 19 simultaneously drives multiple synchronous gears 17 to rotate in the same direction and at the same angle, and then driven by the linkage component, drives multiple nuts 13 to rotate. In this way, only the center gear 19 can be driven to tighten the nuts 13 at the same time. Since the spiral shield 11 has a large resistance when being squeezed, through this simultaneous tightening and pushing method, the movable splint 2 can be slowly and stably and effectively moved close to the fixed base plate 1, making the installation process of the device simple and convenient.

[0044] like Figures 1 to 6 As shown, the driving assembly includes a gear ring 14, a protective cover 10 for covering a synchronous gear 17 is fixedly connected to the outer side of the moving clamp plate 2, the gear ring 14 passes through the protective cover 10, the center of the protective cover 10 is fixedly connected to the moving clamp plate 2 through a round rod, a driving gear 15 is meshed on the outer side of the gear ring 14, the diameter of the driving gear 15 is smaller than that of the gear ring 14, and an operating rod 16 is arranged on the outer side of the driving gear 15;

[0045] During operation, the operating rod 16 drives the active gear 15 to rotate, the active gear 15 drives the gear ring 14 to rotate, and the gear ring 14 drives the central gear 19 to rotate. Since the diameter of the active gear 15 is much smaller than the gear ring 14, it is a process of reducing speed and saving effort, so that the installation process of the mobile splint 2 can be completed relatively easily.

[0046] like Figures 1 to 6 As shown, the linkage assembly includes a transmission chain 18, a pinion is fixedly connected to the middle of the synchronous gear 17, the middle of the nut 13 is concave, a circle of blocks is fixedly connected to the concave part, and the transmission chain 18 is sleeved on the pinion and the concave part of the middle of the nut 13;

[0047] During operation, when the synchronous gear 17 rotates, the pinion gear rotates, and the pinion gear transmits the rotation to the nut 13 through the transmission chain 18. As the nut 13 rotates, the movable clamping plate 2 moves toward the fixed base plate 1.

[0048] like Figures 1 to 6As shown, the vertical section of the nut 13 is polygonal, a polygonal plug hole is provided in the middle of the driving gear 15, the operating rod 16 is transmission-connected with the driving gear 15 through the polygonal plug hole, and the operating rod 16 is a retractable structure;

[0049] During operation, when problems occur in the linkage assembly or the power assembly, the most primitive means can be used to directly rotate the outside of the nut 13 using a wrench or other tool to complete the disassembly of the device. The operating rod 16 can be separated from the active gear 15. When the movable splint 2 is installed in place, the operating rod 16 is extended and one end is overlapped on the outside of one of the screw rods 3. In this way, when the device vibrates and the nut 13 becomes loose, the nut 13 will drive the synchronous gear 17 to rotate in the reverse direction. However, since the operating rod 16 restricts the active gear 15, the center gear 19 cannot rotate, thereby reducing the problem of equipment loosening caused by vibration.

[0050] During operation, the fixed seat plate 1 clamps the plurality of heat exchange plates 12 in the middle of the movable clamping plate 2 through the setting of the spiral shield 11, and cooling water is introduced from one of the cooling pipes 6, and the cooling water is recovered from the other cooling pipe 6. The liquid to be cooled is introduced into one of the input pipes 5, and the cooled liquid is recovered from the other input pipe 5. The two liquids exchange heat in the plurality of heat exchange plates 12 without contacting each other. The movable clamping plate 2 is controlled by rotating the nut 13 to press the plurality of heat exchange plates 12, or to loosen the plurality of heat exchange plates 12. The spiral shield 11 is set It is placed on the outside of the heat exchange plate 12. After the multiple heat exchange plates 12 are squeezed and fitted, the spiral shield 11 is also in a closed state. When the movable clamping plate 2 is opened, the spiral shield 11 will unfold, which will not hinder the disassembly process of the device. At the same time, even if the heat exchange plates 12 are increased or reduced, the spiral shield 11 can be adaptively wrapped on the outside of the multiple heat exchange plates 12. In this way, when a leakage problem occurs, the liquid can be prevented from leaking out, or when the heat exchange plate 12 collapses, the internal parts can be wrapped inside the spiral shield 11 to reduce the impact on the outside.

[0051] When the spiral guard 11 is squeezed, the bent metal strips formed by the spring-shaped spiral guard 11 squeeze each other to form a truncated cone state without gaps. Since the diameters of the two ends of the spiral guard 11 are different, the diameters of adjacent metal strips are also different, so that the metal strip ring with a small diameter in the adjacent annular metal strips can be pressed into the metal strip ring with a large diameter. Under extreme squeezing, the spiral guard 11 can even be pressed into a disc. Through this arrangement, when the number of heat exchange plates 12 is added to the maximum, the adjacent metal strips in the spiral guard 11 are tail-fitted. When the number of heat exchange plates 12 is small, the adjacent metal strips partially overlap each other under the action of squeezing. Through this arrangement, whether the number of heat exchange plates 12 is increased or decreased, the spiral guard 11 can be guaranteed to protect the outside of the heat exchange plates 12, and it relies on the adaptive change of the spiral guard 11 without the need for deliberate adjustment.

[0052] Compared with the circular cross-section, the rectangular cross-section allows the adjacent metal strips to fit together with a larger fitting area, which makes the sealing effect better. The elastic sealing gasket can be deformed appropriately to further improve the sealing effect. Due to the presence of the sealing gasket, when the adjacent metal strips overlap each other, a large friction force needs to be overcome. In this way, it can be ensured that the adjacent metal strips of the spiral shield 11 fit together first and then overlap each other under pressure, and there will be no gaps. The bolts 9 are used to fix the binding ring 8 and the ends of the spiral shield 11. When the heat exchange plate 12 needs to be disassembled, the bolts 9 are removed, and the movable clamping plate 2 and the spiral shield 11 are pulled out from one side of the screw 3.

[0053] The disc-shaped setting allows the spiral shield 11 to be more suitable for the device and more appropriately surround the outer sides of the multiple heat exchange plates 12. The support seat is used to ensure the placement stability of the device, and the central column 7 is used to fix the middle of the multiple heat exchange plates 12.

[0054] The through hole 21 in the heat exchange plate 12 is used to pass through the central column 7. The edge of the central column 7 has a protrusion to ensure that the heat exchange plate 12 will not rotate or shift after being sleeved. The sealing ring 20 is used to ensure that after multiple heat exchange plates 12 are fitted together, there will be no leakage at the edge.

[0055] The observation hole can be used to observe whether there is leakage inside the spiral guard 11. The pressure gauge is used to observe whether there is a significant change in the liquid pressure during the liquid flow process, so as to judge whether the work is normal. When liquid accumulates inside the spiral guard 11, it is discharged to the outside through the drain valve;

[0056] The central gear 19 is driven to rotate by the driving assembly, and the central gear 19 simultaneously drives the multiple synchronous gears 17 to rotate in the same direction and at the same angle, and then driven by the linkage assembly, the multiple nuts 13 are driven to rotate, so that only the central gear 19 can be driven to simultaneously drive the multiple nuts 13 to tighten the nuts 13. Since the spiral shield 11 has a large resistance when being squeezed, this method of simultaneously tightening and pushing can stably and effectively move the mobile clamping plate 2 slowly close to the fixed base plate 1, making the installation process of the device simple and convenient;

[0057] The operating rod 16 drives the driving gear 15 to rotate, the driving gear 15 drives the gear ring 14 to rotate, and the gear ring 14 drives the central gear 19 to rotate. Since the diameter of the driving gear 15 is much smaller than that of the gear ring 14, it is a process of reducing speed and saving effort, so that the installation process of the mobile splint 2 can be completed relatively easily;

[0058] When the synchronous gear 17 rotates, the pinion gear rotates, and the pinion gear transmits the rotation to the nut 13 through the transmission chain 18. As the nut 13 rotates, the movable clamping plate 2 moves toward the fixed base plate 1;

[0059] When there is a problem with the linkage assembly or the power assembly, the most primitive means can be used to directly rotate the outside of the nut 13 using a wrench or other tool to complete the disassembly of the device. The operating rod 16 can be separated from the active gear 15. When the movable splint 2 is installed in place, the operating rod 16 is extended and one end is overlapped on the outside of one of the screw rods 3. In this way, when the device vibrates and the nut 13 becomes loose, the nut 13 will drive the synchronous gear 17 to rotate in the reverse direction. However, since the operating rod 16 restricts the active gear 15, the center gear 19 cannot rotate, which can reduce the problem of equipment loosening caused by vibration.

[0060] 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 protective plate heat exchanger, characterized in that: The invention comprises a fixed seat plate (1) and a movable clamping plate (2), wherein the movable clamping plate (2) and the fixed seat plate (1) are arranged in parallel, a plurality of screw rods (3) are installed on the side of the fixed seat plate (1) close to the movable clamping plate (2), the screw rods (3) penetrate the movable clamping plate (2), and the outer side of the screw rods (3) is threadedly connected with a nut (13), a plurality of heat exchange plates (12) are arranged between the fixed seat plate (1) and the movable clamping plate (2), two input pipes (5) and two cooling pipes (6) are installed at the front end of the fixed seat plate (1), and a spiral shield (11) is arranged on the outer side of the plurality of heat exchange plates (12), the spiral shield (11) will change its volume under the action of external force, and the spiral shield (11) is located in the area surrounded by the plurality of screw rods (3).

2. A protective plate heat exchanger according to claim 1, characterized in that: The spiral shield (11) is formed by spirally bending a long strip of metal material, and its overall shape is a spring with different diameters at both ends. The diameter of one end of the spiral shield (11) close to the fixed seat plate (1) is larger than the diameter of the other end.

3. A protective plate heat exchanger according to claim 2, characterized in that: The cross-section of the spiral shield (11) is rectangular, and the outer edge of the spiral shield (11) is wrapped with an elastic sealing gasket. The fixed seat plate (1) and the movable clamping plate (2) are fixedly connected to the opposite sides with a binding ring (8), and the binding ring (8) is sleeved on the outer side of the spiral shield (11). The outer side of the binding ring (8) is provided with a plurality of bolts (9) for fixing the binding ring (8) and the spiral shield (11).

4. A protective plate heat exchanger according to claim 3, characterized in that: The fixed seat plate (1), the movable clamping plate (2) and the heat exchange plate (12) are all arranged in a disc shape, and a plurality of screws (3) are distributed on the outer side of the fixed seat plate (1) near the edge. The bottoms of the fixed seat plate (1) and the movable clamping plate (2) are fixedly connected to support seats, and a central column (7) is arranged in the middle of the fixed seat plate (1), the movable clamping plate (2) and the heat exchange plate (12).

5. A protective plate heat exchanger according to claim 4, characterized in that: A through hole (21) adapted to the central column (7) is provided in the middle of the heat exchange plate (12), holes adapted to the positions of the input pipe (5) and the cooling pipe (6) are provided at the four corners of the heat exchange plate (12), and a sealing ring (20) is fixedly connected to the outer edge of the heat exchange plate (12) and the outer edge of the through hole (21).

6. A protective plate heat exchanger according to claim 5, characterized in that: The front end of the fixed seat plate (1) is provided with an observation hole, in which a glass plate is arranged, the outsides of the input pipe (5) and the cooling pipe (6) are provided with pressure gauges connected to the inside, and the bottom of the restraining ring (8) is installed with a drain valve.

7. A protective plate heat exchanger according to claim 6, characterized in that: A central gear (19) is rotatably engaged with the middle part of one side of the movable clamping plate (2) away from the fixed base plate (1); the middle part of the central gear (19) is hollowed out; a plurality of synchronous gears (17) are meshed on the outer side of the central gear (19); the synchronous gears (17) are rotatably connected to the movable clamping plate (2); a linkage assembly is arranged between the synchronous gear (17) and the nut (13); and a driving assembly is arranged on the outer side of the central gear (19).

8. The protective plate heat exchanger according to claim 7, characterized in that: The driving assembly comprises a gear ring (14), a protective cover (10) for covering a synchronous gear (17) is fixedly connected to the outer side of the movable clamping plate (2), the gear ring (14) passes through the protective cover (10), the center of the protective cover (10) is fixedly connected to the movable clamping plate (2) through a round rod, a driving gear (15) is meshed on the outer side of the gear ring (14), the diameter of the driving gear (15) is smaller than that of the gear ring (14), and an operating rod (16) is arranged on the outer side of the driving gear (15).

9. A protective plate heat exchanger according to claim 8, characterized in that: The linkage assembly comprises a transmission chain (18), a pinion is fixedly connected to the middle of the synchronous gear (17), the middle of the nut (13) is arranged in a concave shape, a circle of clamping blocks is fixedly connected to the concave part, and the transmission chain (18) is sleeved on the pinion and the concave part of the middle of the nut (13).

10. The protective plate heat exchanger according to claim 9, characterized in that: The vertical cross section of the nut (13) is polygonal, a polygonal insertion hole is provided in the middle of the driving gear (15), the operating rod (16) is transmission-connected to the driving gear (15) via the polygonal insertion hole, and the operating rod (16) is a retractable structure.

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