Protective plate heat exchanger

Abstract

The application belongs to the field of plate heat exchangers, in particular to a protective plate heat exchanger, which comprises a fixed base plate and a movable clamp plate, the movable clamp plate and the fixed base plate are arranged in parallel, a plurality of screw rods are installed on the side of the fixed base plate close to the movable clamp plate, the screw rods penetrate the movable clamp plate, nuts are threadedly connected to the outer sides of the screw rods, two input pipes and two cooling pipes are installed at the front end of the fixed base plate, a spiral shroud is arranged on the outer side of the heat exchange plates, after a plurality of heat exchange plates are extruded and adhered, the spiral shroud is also in a closed state, when the movable clamp plate is opened, the spiral shroud will be unfolded, so as not to hinder the disassembly process of the device, and even if the number of heat exchange plates is increased or decreased, the spiral shroud can also adaptively wrap the outer sides of the plurality of heat exchange plates, so as to prevent liquid from leaking outwards when leakage occurs, or to wrap the internal parts in the spiral shroud when the heat exchange plates are broken, thereby reducing the influence on the outside.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of plate heat exchanger, and particularly relates to a protective plate heat exchanger. BACKGROUND

[0002] The plate heat exchanger is a high-efficiency heat exchanger formed by a series of metal sheets with a certain corrugated shape. Thin rectangular channels are formed between various plates, and heat exchange is carried out through the plates. Under the same pressure loss, the heat transfer coefficient is 3-5 times higher than that of the tubular heat exchanger, the occupied area is one-third of the tubular heat exchanger, and the heat recovery rate can be as high as 90% or more.

[0003] A patent application with the publication number CN105066751A discloses a plate heat exchanger. After the first sealing ring and the second sealing ring of the adjacent plates of the plate heat exchanger are matched, the opposite first sealing rings form a steam cavity, and the opposite second sealing rings form a seawater cavity. Steam enters the steam cavity through the heat source inlet, and seawater enters the seawater cavity through the seawater inlet. The plate heat exchanger does not need to be very long, and the volume of the heat exchanger can be effectively reduced compared with the tubular heat exchanger, thereby reducing the occupied area of the seawater desalination multi-effect evaporation system.

[0004] The conventional heat exchanger generally lacks a protective structure. A plurality of heat exchange plates are combined together through extrusion, and the outer side of the plurality of heat exchange plates lacks protection. The working process of the plate heat exchanger is to continuously pass cooling water and solution to be cooled into the heat exchange plates. During the long-term working process, the liquid may be splashed out from the four sides of the heat exchange plates due to sudden change of water pressure or damage of the heat exchange plates, which may cause damage to the surrounding equipment or operators. However, the number of heat exchange plates between the plate heat exchangers is uncertain. When the number of heat exchange plates changes, the thickness of the overall plate heat exchanger will change. The conventional protective structure cannot change the volume to ensure the protection effect, and thus is not suitable for the plate heat exchanger.

[0005] Therefore, the present application provides a protective plate heat exchanger. SUMMARY

[0006] In order to make up for the deficiencies of the prior art and solve at least one technical problem proposed in the background art.

[0007] The technical scheme adopted by the present application to solve its technical problems is: the protective plate heat exchanger 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 screw rods are installed on one side of the fixed seat plate close to the movable clamping plate, the screw rods penetrate the movable clamping plate, nuts are threadedly connected to the outer sides of the screw rods, 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 protective cover is arranged on the outer side of the plurality of heat exchange plates, the spiral protective cover changes in volume under the action of external force, and the spiral protective cover is located in the region surrounded by the plurality of screw rods.

[0008] Through the arrangement of the spiral protective cover, the fixed seat plate and the movable clamping plate clamp the plurality of heat exchange plates in the middle, cooling water is introduced into one of the cooling pipes, and the other cooling pipe recovers the cooling water; the liquid to be cooled is introduced into one of the input pipes, and the cooled liquid is recovered from the other input pipe; the two liquids exchange heat in the plurality of heat exchange plates and do not contact each other; the movable clamping plate is controlled to press or release the plurality of heat exchange plates by rotating the nut; the spiral protective cover is arranged on the outer side of the heat exchange plates; after the plurality of heat exchange plates are pressed and fitted, the spiral protective cover is also in a closed state; when the movable clamping plate is opened, the spiral protective cover expands; this does not hinder the disassembly process of the device; even if the number of heat exchange plates is increased or decreased, the spiral protective cover can still adaptively wrap the outer side of the plurality of heat exchange plates; in the case of leakage, the liquid is prevented from leaking outward; or when the heat exchange plates are broken, the internal parts are wrapped inside the spiral protective cover, reducing the impact on the outside.

[0009] Preferably, the spiral protective cover is a long strip-shaped metal material spiral bent into a spring shape with different diameters at both ends; the diameter of one end of the spiral protective cover close to the fixed seat plate is greater than the diameter of the other end; when the spiral protective cover is pressed, the spring-shaped spiral protective cover is pressed between the curved metal strips, forming a circular truncated cone state without gaps; due to the different diameters of the two ends of the spiral protective cover, the diameters of adjacent metal strips also differ, so that the smaller diameter metal strip ring can be pressed into the larger diameter metal strip ring among adjacent metal strip rings; under extreme pressure, the spiral protective cover 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 protective cover are end-to-end fitted; when the number of heat exchange plates is small, the adjacent metal strips partially overlap each other under the action of pressure; through this arrangement, whether the number of heat exchange plates is increased or decreased, the spiral protective cover can be guaranteed to protect the outer side of the heat exchange plates, and the spiral protective cover is self-adapting and does not need to be deliberately adjusted.

[0010] Preferably, the cross section of the spiral shroud is rectangular, the outer edge of the spiral shroud is wrapped with a elastic sealing pad, the opposite side of the fixed base plate and the moving clamp plate is fixedly connected with a binding ring, the binding ring is sleeved on the outer side of the spiral shroud, the outer side of the binding ring is provided with a plurality of bolts for fixing the binding ring and the spiral shroud, the rectangular cross section makes the area of the adjacent metal strips in contact larger than that of the circular cross section, so that the sealing effect is better, and the elastic sealing pad can be deformed appropriately, further improving the sealing effect, and because there is a sealing pad, when the adjacent metal strips overlap each other, a larger friction force needs to be overcome, so that the spiral shroud can ensure that the adjacent metal strips are first contacted with each other and then overlapped with each other under the pressure, and there is no gap, the end of the bolt for fixing the binding ring and the spiral shroud is used to detach the heat exchange plate when necessary, and the bolt is detached, and the moving clamp plate and the spiral shroud are pulled out from one side of the screw rod.

[0011] Preferably, the fixed base plate, the moving clamp plate and the heat exchange plate are disc-shaped, a plurality of screw rods are distributed on the outer edge of the fixed base plate, the bottom of the fixed base plate and the moving clamp plate is fixedly connected with a support seat, and a center column is arranged through the middle of the fixed base plate, the moving clamp plate and the heat exchange plate, the disc-shaped arrangement makes the spiral shroud more suitable for the device, and more suitable for surrounding the outer side of the plurality of heat exchange plates, the support seat is used to ensure the stability of the device, and the center column is used to fix the middle of the plurality of heat exchange plates.

[0012] Preferably, the middle of the heat exchange plate is provided with a through hole matched with the center column, the four corners of the heat exchange plate are provided with holes matched with the positions of the input pipe and the cooling pipe, and the outer edge of the heat exchange plate and the outer edge of the through hole are fixedly connected with a sealing ring, the through hole in the heat exchange plate is used to pass through the center column, the edge of the center column is provided with a protrusion to prevent the heat exchange plate from rotating and shifting after being sleeved, and the sealing ring is used to prevent liquid from leaking from the edge of the plurality of heat exchange plates after being contacted.

[0013] Preferably, the front end of the fixed base plate is provided with an observation hole, a glass plate is arranged in the observation hole, the outer side of the input pipe and the cooling pipe is provided with a pressure gauge in communication with the inside, and the bottom of the binding ring is provided with a liquid discharge valve, the observation hole can observe whether the spiral shroud leaks, the pressure gauge is used to observe whether the liquid pressure changes obviously during the liquid passing process, so as to judge whether the work is normally carried out, and the liquid in the spiral shroud is discharged outward through the liquid discharge valve when there is liquid accumulation in the spiral shroud.

[0014] Preferably, the moving clamp plate is rotatably connected with a central gear in the middle of the side of the fixed base plate, the middle of the central gear is hollow, the outer side of the central gear is engaged with a plurality of synchronous gears, the synchronous gears are rotatably connected with the moving clamp plate, the synchronous gears and the nuts are provided with a linkage assembly, the outer side of the central gear is provided with a driving assembly, the central gear is rotated by the driving assembly, the central gear drives the plurality of synchronous gears to rotate in the same direction and at the same angle, then the plurality of nuts are driven to rotate under the driving of the linkage assembly, so that the central gear is driven to drive the plurality of nuts to be tightened, and since the screw shield has great resistance when being pressed, the moving clamp plate can be slowly moved close to the fixed base plate stably and effectively by the method of simultaneously tightening and pushing, and the installation process of the device is simple and convenient.

[0015] Preferably, the driving assembly comprises a gear ring, the outer side of the moving clamp plate is fixedly connected with a protective cover for covering the synchronous gears, the gear ring passes through the protective cover, the center of the protective cover is fixedly connected with the moving clamp plate through a round rod, the outer side of the gear ring is engaged with a driving gear, the diameter of the driving gear is smaller than that of the gear ring, the outer side of the driving gear is provided with an operating rod, the driving gear is rotated by the operating rod, the gear ring is rotated by the driving gear, and the central gear is rotated by the gear ring, and since the diameter of the driving gear is much smaller than that of the gear ring, the process is a speed-reducing and labor-saving process, so that the installation process of the moving clamp plate can be completed more easily.

[0016] Preferably, the linkage assembly comprises a transmission chain, the middle of the synchronous gear is fixedly connected with a pinion, the middle of the nut is provided with an inner recess, a ring of clamping blocks is fixedly connected in the inner recess, and the transmission chain is sleeved in the middle of the pinion and the inner recess of the nut, when the synchronous gear rotates to drive the pinion to rotate, the pinion transmits the rotation to the nut through the transmission chain, and the moving clamp plate is moved towards the fixed base plate along with the rotation of the nut.

[0017] Preferably, the vertical section of the nut is provided in a polygonal shape, the middle of the driving gear is provided with a polygonal insertion hole, the operating rod is in transmission connection with the driving gear through the polygonal insertion hole, and the operating rod is of a telescopic structure, when the linkage assembly or the power assembly has a problem, the nut can be directly rotated on the outer side by using a wrench and the like, so that the device can be disassembled by the most original means, the operating rod can be separated from the driving gear, after the moving clamp plate is installed in place, the operating rod is elongated and one end is overlapped on the outer side of one of the screw rods, so that when the nut is loosened during the vibration process of the device, the nut can reversely drive the synchronous gear to rotate, but since the operating rod limits the driving gear, the central gear cannot rotate, so that the loosening problem of the device caused by vibration can be reduced.

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

[0019] 1. The protective plate heat exchanger of the present application, by the setting of the spiral guard, the fixed seat plate clamps the moving clamp plate to clamp a plurality of heat exchange plates in the middle, one of the cooling pipes passes in the cooling water, the other cooling pipe recovers the cooling water, the liquid to be cooled is passed into one of the input pipes, and the cooled liquid is recovered from the other input pipe, the two liquids exchange heat in a plurality of heat exchange plates and do not contact each other, the rotating nut controls the moving clamp plate to press or loosen a plurality of heat exchange plates, the spiral guard is arranged outside the heat exchange plates, and after a plurality of heat exchange plates are extruded and fitted, the spiral guard is also in a closed state, when the moving clamp plate is opened, the spiral guard is unfolded, so that the disassembly process of the device is not hindered, and even if the number of heat exchange plates is increased or decreased, the spiral guard can also adaptively wrap outside a plurality of heat exchange plates, so that when leakage occurs, liquid leakage to the outside is prevented, or when the heat exchange plates are broken, the internal parts are wrapped inside the spiral guard, reducing the influence on the outside.

[0020] 2. The protective plate heat exchanger of the present application, when the spiral guard is extruded, the spring-shaped spiral guard extrudes between the curved metal strips formed by the spiral guard to form a circular truncated cone state without gaps, and because the diameters of the two ends of the spiral guard are different, the diameters of the adjacent metal strips also differ, 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, and under extreme extrusion, the spiral guard can even be pressed into a disc, through this setting, when the number of heat exchange plates is added to the maximum, the adjacent metal strips in the spiral guard are fitted together, when the number of heat exchange plates is small, the adjacent metal strips partially overlap each other under the extrusion, through this setting, 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 relies on the self-adaptive change of the spiral guard without deliberate adjustment. BRIEF DESCRIPTION OF DRAWINGS

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

[0022] Figure 1 is the first perspective view of the present application;

[0023] Figure 2 is the second perspective view of the present application;

[0024] Figure 3 is the perspective view of the spiral guard and the moving clamp plate of the present application;

[0025] Figure 4 is the perspective view of the moving clamp plate and the protective cover of the present application;

[0026] Figure 5 is the perspective view of the center gear and the synchronous gear of the present application;

[0027] Figure 6 This is a perspective view of the heat exchange plate of the present invention;

[0028] In the diagram: 1. Fixed base plate; 2. Moving clamp plate; 3. Screw; 5. Input pipe; 6. Cooling pipe; 7. Central column; 8. Restraint ring; 9. Bolt; 10. Protective cover; 11. Spiral shield; 12. Heat exchange plate; 13. Nut; 14. Gear ring; 15. Drive gear; 16. Operating lever; 17. Synchronizing gear; 18. Transmission chain; 19. Central gear; 20. Sealing ring; 21. Through hole. Detailed Implementation

[0029] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0030] like Figures 1 to 6 As shown in the embodiment of the present invention, a protective plate heat exchanger includes a fixed base plate 1 and a movable clamping plate 2. The movable clamping plate 2 and the fixed base plate 1 are arranged in parallel. A plurality of screws 3 are installed on the side of the fixed base plate 1 near the movable clamping plate 2. The screws 3 pass through the movable clamping plate 2. Nuts 13 are threaded to the outer side of the screws 3. A plurality of heat exchange plates 12 are arranged between the fixed base plate 1 and the movable clamping plate 2. Two inlet pipes 5 and two cooling pipes 6 are installed at the front end of the fixed base plate 1. A spiral shield 11 is arranged on the outer side of the plurality of heat exchange plates 12. The spiral shield 11 changes volume under the action of external force. The spiral shield 11 is located in the area enclosed by the plurality of screws 3.

[0031] During operation, traditional heat exchangers generally lack protective structures. Multiple heat exchange plates 12 are joined together by compression, and the outer sides of these plates lack protection. The plate heat exchanger operates by continuously introducing cooling water and the solution to be cooled into the heat exchange plates 12. During long-term operation, sudden changes in water pressure or damage to the heat exchange plates 12 may cause liquid to rush out from around the plates, potentially injuring surrounding equipment or operators. However, the number of heat exchange plates 12 in a plate heat exchanger is uncertain. Whenever the number of heat exchange plates 12 changes, the overall thickness of the plate heat exchanger changes. Traditional protective structures, in order to ensure the protective effect, cannot change their volume and are therefore unsuitable for plate heat exchangers.

[0032] Through the setting of the spiral shroud 11, the fixed base plate 1 and the moving clamping plate 2 clamp a plurality of heat exchange plates 12 in the middle, one of the cooling pipes 6 passes in cooling water, and the other cooling pipe 6 recovers the cooling water, the liquid to be cooled is passed 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 and do not contact each other, the moving clamping plate 2 is controlled by the rotating nut 13 to press the plurality of heat exchange plates 12 or loosen the plurality of heat exchange plates 12, the spiral shroud 11 is arranged outside the heat exchange plates 12, and after the plurality of heat exchange plates 12 are pressed and fitted, the spiral shroud 11 is also in a closed state, when the moving clamping plate 2 is opened, the spiral shroud 11 is unfolded, so that the disassembly process of the device is not hindered, and even if the number of heat exchange plates 12 is increased or decreased, the spiral shroud 11 can also adaptively wrap outside the plurality of heat exchange plates 12, so that when leakage occurs, the liquid is prevented from leaking outward, or when the heat exchange plates 12 are broken, the internal parts are wrapped inside the spiral shroud 11, and the influence on the outside is reduced.

[0033] As shown in Figures 1 to 6 , the spiral shroud 11 is a long strip-shaped metal material spiral bending, and the overall shape is a spring shape with different diameters at both ends, and the diameter of the spiral shroud 11 near the fixed base plate 1 is larger than that of the other end;

[0034] When working, when the spiral shroud 11 is pressed, the spiral shroud 11 formed by the curved metal strips press each other to form a circular truncated cone state without gaps, and because the diameters of the two ends of the spiral shroud 11 are different, the diameters of the adjacent metal strips also differ, so that in 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, and under extreme pressure, the spiral shroud 11 can even be pressed into a disc. Through this setting, when the number of heat exchange plates 12 is added to the maximum, the adjacent metal strips in the spiral shroud 11 are end-to-end fitted, and when the number of heat exchange plates 12 is small, the adjacent metal strips partially overlap each other under the pressing action. Through this setting, whether the number of heat exchange plates 12 is increased or decreased, the spiral shroud 11 can be guaranteed to protect the outside of the heat exchange plates 12, and relies on the self-adaptive change of the spiral shroud 11 without deliberate adjustment.

[0035] As shown in Figures 1 to 6 , the cross section of the spiral shroud 11 is rectangular, the outer edge of the spiral shroud 11 is wrapped with a flexible sealing pad, the opposite side of the fixed base plate 1 and the moving clamping plate 2 is fixedly connected with a restraint ring 8, the restraint ring 8 is sleeved outside the spiral shroud 11, and a plurality of bolts 9 for fixing the restraint ring 8 and the spiral shroud 11 are arranged on the outside of the restraint ring 8;

[0036] When working, compared with the circular section, the rectangular section has a larger area when the adjacent metal strips are attached, so that the sealing effect is better, and the elastic sealing pad can be deformed appropriately, further improving the sealing effect, and because there is a sealing pad, when the adjacent metal strips overlap each other, a larger friction force needs to be overcome, so that the adjacent metal strips can be attached to each other first, and then overlap each other under the pressure of the spiral shield 11, so that there is no gap, and the bolt 9 is used to fix the end of the restraint ring 8 and the spiral shield 11. When the heat exchange plate 12 needs to be disassembled, the bolt 9 is removed, and the moving clamp plate 2 and the spiral shield 11 are pulled out from one side of the screw rod 3.

[0037] As shown in Figures 1 to 6 , the fixed seat plate 1, the moving clamp plate 2 and the heat exchange plate 12 are all disc-shaped, a plurality of screw rods 3 are distributed on the outer side of the fixed seat plate 1 near the edge, the bottom of the fixed seat plate 1 and the moving clamp plate 2 is fixedly connected with a support seat, and a center column 7 is arranged through the middle of the fixed seat plate 1, the moving clamp plate 2 and the heat exchange plate 12.

[0038] When working, the disc-shaped setting makes the spiral shield 11 more suitable for the device, and more suitable for surrounding the outer side of the plurality of heat exchange plates 12, the support seat is used to ensure the stability of the device, and the center column 7 is used to fix the middle of the plurality of heat exchange plates 12.

[0039] As shown in Figures 1 to 6 , the middle of the heat exchange plate 12 is provided with a through hole 21 matched with the center column 7, the four corners of the heat exchange plate 12 are provided with holes matched with the positions of the input pipe 5 and the cooling pipe 6, and the outer edges of the heat exchange plate 12 and the through hole 21 are fixedly connected with a sealing ring 20. When working, the through hole 21 in the heat exchange plate 12 is used to pass through the center column 7, the edge of the center column 7 has a protrusion to ensure that the heat exchange plate 12 does not rotate and shift after being sleeved, and the sealing ring 20 is used to ensure that the edges of the plurality of heat exchange plates 12 do not leak after being attached.

[0040] As shown in Figures 1 to 6 , the front end of the fixed seat plate 1 is provided with an observation hole, the observation hole is provided with a glass plate, the outer sides of the input pipe 5 and the cooling pipe 6 are provided with pressure gauges in communication with the interiors, and the bottom of the restraint ring 8 is provided with a liquid discharge valve.

[0041] When working, the observation hole can observe whether the inside of the spiral shield 11 is leaking, the pressure gauges are used to observe whether the liquid pressure changes obviously during the liquid passing process, so as to judge whether the work is normal, and when there is liquid accumulation in the inside of the spiral shield 11, the liquid is discharged outward through the liquid discharge valve.

[0042] As shown in Figures 1 to 6As shown, the mobile clamp plate 2 is rotatably connected to the middle of the side of the fixed base plate 1, the center gear 19 is rotatably connected to the middle of the side of the mobile clamp plate 2, the middle of the center gear 19 is hollow, the outer side of the center gear 19 is engaged with a plurality of synchronous gears 17, the synchronous gears 17 are rotatably connected with the mobile clamp plate 2, the linkage assembly is arranged between the synchronous gears 17 and the nuts 13, and the outer side of the center gear 19 is provided with a driving assembly.

[0043] In operation, the driving assembly drives the center gear 19 to rotate, the center gear 19 drives the plurality of synchronous gears 17 to rotate in the same direction and at the same angle, and then the linkage assembly drives the plurality of nuts 13 to rotate, so that the center gear 19 can drive the plurality of nuts 13 to be tightened at the same time, and because the screw shield 11 has a large resistance when being pressed, the method of simultaneously tightening and pushing can stably and effectively make the mobile clamp plate 2 slowly close to the fixed base plate 1, so that the installation process of the device becomes simple and convenient.

[0044] As shown in the drawings, Figures 1 to 6 The driving assembly comprises a gear ring 14, the outer side of the mobile clamp plate 2 is fixedly connected with a protective cover 10 for covering the synchronous gears 17, the gear ring 14 penetrates through the protective cover 10, the center of the protective cover 10 is fixedly connected with the mobile clamp plate 2 through a circular rod, the outer side of the gear ring 14 is engaged with a driving gear 15, the diameter of the driving gear 15 is smaller than that of the gear ring 14, and the outer side of the driving gear 15 is provided with an operating rod 16.

[0045] In operation, 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 center gear 19 to rotate, so that the diameter of the driving gear 15 is much smaller than that of the gear ring 14, and the process is a speed-reducing and labor-saving process, so that the installation process of the mobile clamp plate 2 can be completed more easily.

[0046] As shown in the drawings, Figures 1 to 6 The linkage assembly comprises a transmission chain 18, the middle of the synchronous gear 17 is fixedly connected with a pinion, the middle of the nut 13 is recessed, a ring of clamping blocks is fixedly connected in the recessed portion, and the transmission chain 18 is sleeved on the pinion and the middle recessed portion of the nut 13.

[0047] In operation, when the synchronous gear 17 rotates to drive the pinion to rotate, the pinion transmits the rotation to the nut 13 through the transmission chain 18, and the mobile clamp plate 2 moves towards the fixed base plate 1 with the rotation of the nut 13.

[0048] As shown in the drawings, Figures 1 to 6As shown, the vertical section of the nut 13 is polygonal, the middle of the driving gear 15 is provided with a polygonal socket, the operating rod 16 is in driving connection with the driving gear 15 through the polygonal socket, and the operating rod 16 is of telescopic structure;

[0049] In operation, when the linkage assembly or the power assembly has a problem, the nut 13 outside can be directly rotated by using a wrench or other tools, so that the device is disassembled, the operating rod 16 can be separated from the driving gear 15, and when the moving clamp plate 2 is installed in place, the operating rod 16 is elongated and one end is overlapped on the outside of one of the screw rods 3. In this way, when the nut 13 loosens during the vibration process, the nut 13 will rotate in the opposite direction and drive the synchronous gear 17 to rotate, but the operating rod 16 limits the driving gear 15, so that the central gear 19 cannot rotate, thereby reducing the loosening problem of the device caused by vibration.

[0050] In operation, through the setting of the spiral guard 11, the fixed base plate 1 clamps the plurality of heat exchange plates 12 in the middle by the moving clamp plate 2, cooling water is introduced into one of the cooling pipes 6, and the other cooling pipe 6 recovers the cooling water. The liquid to be cooled is introduced into one of the input pipes 5, and the other input pipe 5 recovers the cooled liquid. The two liquids exchange heat in the plurality of heat exchange plates 12 and do not contact each other. The rotating nut 13 controls the moving clamp plate 2 to press or loosen the plurality of heat exchange plates 12. The spiral guard 11 is arranged outside the heat exchange plates 12. When the plurality of heat exchange plates 12 are pressed and fitted, the spiral guard 11 is also in a closed state. When the moving clamp plate 2 is opened, the spiral guard 11 will expand. In this way, it will not hinder the disassembly process of the device. Even if the number of heat exchange plates 12 is increased or decreased, the spiral guard 11 can also adapt to wrap outside the plurality of heat exchange plates 12. In this way, when leakage occurs, it can prevent liquid from leaking outward, or when the heat exchange plates 12 are broken, it can wrap the internal parts inside the spiral guard 11 to reduce the impact on the outside;

[0051] When the spiral shroud 11 is squeezed, the spring-shaped spiral shroud 11 forms a curved metal strip between each other, forming a circular platform state without gaps, and because the diameters of the two ends of the spiral shroud 11 are different, the diameters of the adjacent metal strips also differ, 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, and under extreme pressure, the spiral shroud 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 shroud 11 are end-to-end and fit together, and when the number of heat exchange plates 12 is less, the adjacent metal strips partially overlap each other under the action of pressure. Through this arrangement, whether the number of heat exchange plates 12 is increased or decreased, the spiral shroud 11 can be guaranteed to protect the outside of the heat exchange plates 12, and this is achieved by the spiral shroud 11 being self-adapting rather than requiring deliberate adjustment.

[0052] The rectangular cross-section allows the adjacent metal strips to fit together with a larger area compared to a circular cross-section, resulting in better sealing, and the elastic sealing gasket can deform appropriately to further improve the sealing effect. In addition, because of the presence of the sealing gasket, when the adjacent metal strips overlap each other, a large friction force needs to be overcome, which ensures that the adjacent metal strips of the spiral shroud 11 first fit together and then overlap each other under pressure, without gaps. The bolts 9 are used to fix the end of the binding ring 8 and the spiral shroud 11, and when the heat exchange plates 12 need to be removed, the bolts 9 are removed and the moving clamp plate 2 and the spiral shroud 11 are pulled out from one side of the screw rod 3.

[0053] The disc-shaped arrangement allows the spiral shroud 11 to be more adaptable to the device and more suitable for surrounding the outside of multiple heat exchange plates 12. The support seat is used to ensure the stability of the device, and the center column 7 is used to fix the middle part of the multiple heat exchange plates 12.

[0054] The through hole 21 in the heat exchange plate 12 is used to pass through the center column 7, and the edge of the center column 7 has a protrusion to ensure that the heat exchange plate 12 does not rotate and shift after being fitted, and the sealing ring 20 is used to ensure that the edges of the multiple heat exchange plates 12 do not leak after being fitted.

[0055] The observation hole can observe whether the spiral shroud 11 is leaking, and the pressure gauge is used to observe whether the liquid pressure changes significantly during the liquid passing process to determine whether the work is proceeding normally. When there is fluid accumulation in the spiral shroud 11, the fluid is discharged outward through the drainage valve.

[0056] By driving the center gear 19 rotation, the center gear 19 at the same time drive a plurality of synchronous gear 17 same direction, same angle rotation, and then under the linkage assembly drive, drive a plurality of nut 13 rotation, so that only drive center gear 19, at the same time drive a plurality of nut 13, due to the existence of the large resistance of the screw shield 11 when being extruded, by this kind of simultaneous tightening method, can effectively and stably slow down the moving clamp plate 2 close to the fixed base plate 1, let the installation process of the device become simple and convenient;

[0057] By operating lever 16 drive the driving gear 15 rotation, the driving gear 15 drive gear ring 14 rotation, gear ring 14 drive center gear 19 rotation, because the diameter of the driving gear 15 is much smaller than the gear ring 14, so it is a process of speed reduction and labor saving, so that the installation process of the moving clamp plate 2 can be completed more easily;

[0058] When the synchronous gear 17 rotation drive pinion rotation, pinion through the transmission chain 18 to the rotation of the nut 13, with the nut 13 rotation, will move the clamp plate 2 to the direction of the fixed base plate 1;

[0059] When the linkage assembly or power assembly problem, can be through the most original means, using wrench and other tools directly rotate the nut 13 outside, complete the disassembly of the device, operating lever 16 can be separated from the driving gear 15, when the moving clamp plate 2 is installed in place, the operating lever 16 is elongated, and one end is lapped on the outside of one of the screw rod 3, so that the device in the process of vibration, when the nut 13 loose, the nut 13 will reverse drive the synchronous gear 17 rotation, but because the operating lever 16 limit the driving gear 15, so that the center gear 19 can't rotate, so as to reduce the loosening problem caused by vibration of the equipment.

[0060] The above shows and describes the basic principles, main features and advantages of the present application. Those skilled in the art should understand that the present application is not limited to the above examples, the above examples and descriptions in the specification are only to illustrate the principles of the present application, without departing from the spirit and scope of the present application, the present application will have various changes and improvements, these changes and improvements all fall within the scope of the present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A guarded plate heat exchanger, characterized in that: The utility model provides a heat exchange device, including fixed seat board (1) and mobile clamp plate (2), mobile clamp plate (2) and fixed seat board (1) are in parallel arrangement, a plurality of screw rods (3) are installed to the side of fixed seat board (1) close to mobile clamp plate (2), the screw rod (3) penetrates mobile clamp plate (2), the outside screw thread connection of screw rod (3) is equipped with nut (13), a plurality of heat exchange plates (12) are arranged between fixed seat board (1) and mobile clamp plate (2), the front end of fixed seat board (1) is installed two input pipes (5) and two cooling pipes (6), a plurality of heat exchange plates (12) are provided with spiral shroud (11) outside, spiral shroud (11) changes volume under external force, spiral shroud (11) is located in the area surrounded by a plurality of screw rods (3); Spiral shroud (11) is long strip metal material spiral bending and forms, and the overall shape is a spring shape with different diameters at both ends, and the diameter of one end of spiral shroud (11) close to fixed seat board (1) is greater than that of the other end. The cross section of the spiral shroud (11) is rectangular, the outer edge of the spiral shroud (11) is wrapped with a resilient gasket, the opposite side of the fixed seat board (1) and the mobile clamp plate (2) is fixedly connected with a restraint ring (8), the restraint ring (8) is sleeved on the outside of the spiral shroud (11), and a plurality of bolts (9) for fixing the restraint ring (8) and the spiral shroud (11) are arranged on the outside of the restraint ring (8).

2. A guarded plate heat exchanger according to claim 1, characterised in that: The fixed seat board (1), the mobile clamp plate (2) and the heat exchange plates (12) are all disc-shaped, a plurality of screw rods (3) are distributed on the edge of the outside of the fixed seat board (1), and support seats are fixedly connected to the bottoms of the fixed seat board (1) and the mobile clamp plate (2). A central column (7) penetrates the middle parts of the fixed seat board (1), the mobile clamp plate (2) and the heat exchange plates (12).

3. A guarded plate heat exchanger according to claim 2, characterised in that: A through hole (21) adapted to the central column (7) is formed in the middle part of the heat exchange plate (12), and holes adapted to the positions of the input pipe (5) and the cooling pipe (6) are formed in the four corners of the heat exchange plate (12). A sealing ring (20) is fixedly connected to the outer edges of the heat exchange plate (12) and the through hole (21).

4. A guarded plate heat exchanger according to claim 3, characterised in that: An observation hole is formed in the front end of the fixed seat board (1), a glass plate is arranged in the observation hole, pressure gauges in communication with the interiors are arranged on the outsides of the input pipe (5) and the cooling pipe (6), and a drain valve is arranged on the bottom of the restraint ring (8).

5. A guarded plate heat exchanger according to claim 4, characterized in that: A central gear (19) is rotatably connected to the middle part of the side of the mobile clamp plate (2) away from the fixed seat board (1), the middle part of the central gear (19) is hollow, a plurality of synchronous gears (17) are engaged with the outside of the central gear (19), the synchronous gears (17) are rotatably connected with the mobile clamp plate (2), a linkage assembly is arranged between the synchronous gears (17) and the nut (13), and a driving assembly is arranged on the outside of the central gear (19).

6. A guarded plate heat exchanger according to claim 5, characterised in that: The driving assembly comprises a gear ring (14), the outer side of the moving clamp plate (2) is fixed with a protective cover (10) for covering a synchronous gear (17), the gear ring (14) penetrates through the protective cover (10), the center of the protective cover (10) is fixed with the moving clamp plate (2) through a round rod, the outer side of the gear ring (14) is engaged with a driving gear (15), the diameter of the driving gear (15) is smaller than that of the gear ring (14), and the outer side of the driving gear (15) is provided with an operating rod (16).

7. A guarded plate heat exchanger according to claim 6, characterised in that: The linkage assembly comprises a transmission chain (18), the middle part of the synchronous gear (17) is fixed with a pinion, the middle part of the nut (13) is provided with an inner recess, and a ring of clamping blocks is fixed in the inner recess, and the transmission chain (18) is sleeved on the pinion and the inner recess of the middle part of the nut (13).

8. A guarded plate heat exchanger according to claim 7, characterised in that: The vertical section of the nut (13) is provided in a polygonal shape, the middle part of the driving gear (15) is provided with a polygonal insertion hole, the operating rod (16) is in transmission connection with the driving gear (15) through the polygonal insertion hole, and the operating rod (16) is of a telescopic structure.

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