Novel enamel flat plate sheet type heat exchange device

Abstract

The utility model relates to a novel enamel flat plate sheet type heat exchange device which comprises a plurality of heat exchange sheets and sealing gaskets, heat exchange cavities are formed by interlayers among the heat exchange sheets through the sealing gaskets, arc-shaped chamfers are arranged on the periphery of each heat exchange cavity, and the bottom surfaces of the heat exchange cavities are heat exchange planes of the heat exchange sheets. A flowing path is optimized through smooth transition, flowing dead angles are avoided, and the heat exchange effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of heat exchange, in particular to a novel enamel flat plate type heat exchange device. Background Art

[0002] The interlayer heat exchanger is formed by a sandwich between two adjacent plates. The cold and hot fluids are separated by a solid wall (tube or plate) and do not mix. It involves the transfer and conversion of heat. The heat exchange is carried out through the interlayer to make the fluid temperature reach the specified index of the process to meet the needs of the process conditions. The gap between the two plates is usually connected by a pipe or a sealing gasket to form a closed environment that can loosely accommodate the flow and transfer of materials. It is suitable for high temperature, high pressure, high viscosity, and easy to scale fluids.

[0003] During operation of the heat exchanger in the prior art, the fluid flows in the heat exchange cavity formed between the heat exchange plates and exchanges heat with the heat exchange plane of the heat exchange plates. In the existing enamel flat plate heat exchanger used for cooling chemical materials and exhaust gas, the shape of the heat exchange plate is usually a rectangular structure, and the heat exchange cavity structure formed is also a rectangular cavity. When the fluid falls on the heat exchange plane and flows, it will diffuse around the heat exchange plane. Since the fluid flow is usually not completely uniform, the flow speed at certain positions may be slower or even stagnant. These areas are called flow dead zones, which are often located at right-angled corners in rectangular heat exchange plates. The formation of flow dead zones will lead to poor heat exchange effects around the heat exchange plates in the prior art, resulting in reduced overall temperature and material transfer efficiency inside the heat exchanger, thereby affecting the working efficiency and stability of the equipment. Utility Model Content

[0004] The purpose of the utility model is to solve the problem that the fluid in the heat exchange cavity of the existing heat exchanger will stagnate at the surrounding positions of the heat exchange cavity to form a flow dead zone, resulting in poor heat exchange effect of the heat exchanger. A new type of enamel flat plate heat exchange device is provided. The flow path is optimized through smooth transition to avoid the formation of flow dead corners and improve the heat exchange effect. The main concept is:

[0005] A novel enamel flat plate heat exchange device includes a plurality of heat exchange plates and sealing gaskets. The interlayer between the heat exchange plates forms a heat exchange cavity through the sealing gaskets, and the heat exchange cavity is set with arc chamfers on all sides. This solution sets the positions around the heat exchange cavity as arc chamfers so that when the fluid contacts the heat exchange plane for heat exchange, the arc chamfer treatment of this solution is compared with the traditional right-angle heat exchange plane. The heat exchange cavity of this solution has a smooth transition and optimizes the flow of the fluid in the heat exchange cavity, so that the fluid is subject to less flow resistance at the arc chamfer of the heat exchange cavity and flows continuously. The arc chamfer treatment reduces the area of ​​the flow dead angle around the heat exchange plane, and concentrates the fluid on the heat exchange plane in the middle part with good heat exchange effect, so that the overall temperature and material transfer efficiency inside the heat exchanger are stable, and the heat exchange effect is improved.

[0006] Preferably, the heat exchanger is a rounded rectangular structure, and the side wall of the heat exchanger is provided with an external chamfer. The heat exchanger is formed into a rounded rectangular structure by performing arc chamfering on the outer periphery of the heat exchanger. When the fluid enters the heat exchange cavity, the contact area with the surrounding positions of the heat exchange plane is reduced. The heat exchanger is chamfered as a whole so that the shell of the heat exchanger is smoothly transitioned, which can reduce the concentration of local stress after the heat exchanger is assembled.

[0007] The utility model can also solve the problem in the prior art that the heat exchange effect of the side of the heat exchange plate is poor due to contact with the outside. Preferably, the heat exchange plate is a rectangular structure, and an annular boss is provided on the upper surface of the heat exchange plate. The corner of the annular boss is an arc shape, and the inside of the strip boss is connected to the inside of the heat exchange plate. An integral annular boss is opened on the upper surface of the heat exchange plate, and an arc-shaped cavity with an arc chamfer is formed on the inner side of the annular boss. The arc-shaped cavity inside the annular boss is the heat exchange cavity, which optimizes the flow of the fluid on the heat exchange plane. After the sealing gasket is installed on the heat exchange plate with the annular boss, the fluid on the heat exchange plane of the heat exchange cavity will not directly contact the sealing gasket, and the annular boss and the heat exchange plate are fixedly connected by welding or integral molding so that the heat exchange medium channel set inside the heat exchange plate can flow as a whole, and the inner wall of the annular boss is in contact with the fluid, so that the fluid flowing around the heat exchange plate can not only exchange heat on the heat exchange plane but also exchange heat with the annular boss connected to the cavity in the heat exchange plate, thereby further improving the overall heat exchange effect.

[0008] Preferably, the heat exchanger is a rectangular structure, and a downward rounded rectangular groove is provided on the upper surface of the heat exchanger. A rounded rectangular groove with an arc chamfer is provided on the upper surface of the heat exchanger, and the heat exchange cavity is inside the rounded rectangular groove that is concave downward. The rounded rectangular groove is connected to the inside of the heat exchanger, and the rounded rectangular groove optimizes the flow of the fluid on the heat exchange plane and reduces the flow resistance; after the heat exchanger with the rounded rectangular groove is installed with a sealing gasket, the fluid on the heat exchange plane of the heat exchange cavity will not directly contact the sealing gasket, and the rounded rectangular groove and the heat exchanger are fixedly connected by welding or integral molding so that the heat exchange medium channel set inside the heat exchanger flows as a whole, and the inner side wall of the rounded rectangular groove contacts the fluid, so that the fluid flowing around the heat exchanger can not only exchange heat on the heat exchange plane but also exchange heat with the side wall of the rounded rectangular groove connected to the inner cavity of the heat exchanger, further improving the overall heat exchange effect.

[0009] Preferably, the heat exchanger is provided with a plurality of drainage outlets, and a plurality of material drainage grooves are provided on the surface of the heat exchanger, and the ends of the material drainage grooves are connected to the drainage outlets. By providing a plurality of material drainage grooves on the heat exchanger, the fluid can be converged into the drainage outlet, which helps to guide the side fluid to the middle position, reduce the loss of the fluid on the side of the heat exchanger, and improve the flow efficiency of the fluid by draining the fluid on the heat exchanger through the material drainage grooves.

[0010] Preferably, a novel heat exchange device further includes a fastening mechanism, a top plate and a bottom plate, a plurality of heat exchange fins are arranged between the top plate and the bottom plate, and the fastening mechanism connects the top plate, the bottom plate and the plurality of heat exchange fins.

[0011] Preferably, the closed heat exchange cavity formed between the top plate and the heat exchange fins, the multiple closed heat exchange cavities formed by stacking the multiple heat exchange fins, the multiple heat exchange cavities form a material channel through the drainage outlets, and the drainage outlets of two adjacent heat exchange fins are arranged in opposite directions to form a Z-shaped material channel. The two adjacent heat exchange fins are placed in opposite directions so that the drainage outlets are staggered to form a Z-shaped material layer, which can fully utilize the material layer area of ​​the heat exchange fins to improve the heat exchange effect.

[0012] Preferably, a feed port is provided on the top plate, and a discharge port is provided on the bottom plate, and the feed port of the top plate and the discharge port of the bottom plate are respectively staggered on both sides with respect to the drainage outlets of adjacent heat exchange plates.

[0013] Preferably, the fastening mechanism is composed of a screw, a tubular pressure plate and a locking nut, the tubular pressure plate and the locking nut are sleeved on the screw, the locking nut and the screw are movably connected by threads, and the tubular pressure plate is respectively arranged on the upper surface of the top plate and the lower surface of the bottom plate. Evenly arranging the fastening mechanism on the outside of the heat exchange device can make the heat exchange device evenly stressed, the fastening mechanism fastens and seals the heat exchange plate inside the heat exchange device by fastening the top plate and the bottom plate, and arranging the fastening mechanism on the outside can facilitate the disassembly and assembly of the heat exchange device.

[0014] The beneficial effect of the utility model is that arc chamfers are set around the heat exchange cavity in the heat exchange device, and the flow path is optimized through smooth transition at the surrounding positions to avoid forming flow dead corners, thereby improving the heat exchange effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the utility model.

[0016] Figure 2 It is a schematic structural diagram of a heat exchanger plate according to a first embodiment of the utility model.

[0017] Figure 3 This is a schematic diagram of the structure of the heat exchange chamber in Example 1 of the utility model.

[0018] Figure 4 This is a schematic diagram of the structure of the heat exchange plate of the second embodiment of the utility model.

[0019] Figure 5 This is a schematic diagram of the structure of the heat exchange chamber in Embodiment 2 of the present utility model.

[0020] Figure 6 This is a schematic diagram of the structure of the heat exchange plate in Example 3 of the utility model.

[0021] Figure 7 This is a schematic diagram of the structure of the heat exchange chamber of Embodiment 3 of the present utility model.

[0022] Figure 8 It is a structural schematic diagram of the sealing gasket of the utility model.

[0023] The reference numerals include: 1. heat exchange plate; 11. external chamfer; 12. annular boss; 13. rounded rectangular groove; 2. sealing gasket; 3. heat exchange chamber; 31. arc chamfer; 4. drainage outlet; 5. fastening mechanism; 51. screw; 52. tubular pressure plate; 53. locking nut; 6. top plate; 61. feed inlet; 7. bottom plate; 71. discharge outlet. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solutions and advantages of the embodiments more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present disclosure. Instead, they are only examples of devices and methods consistent with some aspects of the present disclosure as detailed in the attached claims.

[0025] It should be noted that all actions to obtain signals, information or data in this application are carried out in compliance with the relevant data protection laws and policies of the country where they are located, and with the authorization given by the owner of the corresponding device.

[0026] In the present disclosure, unless otherwise stated, the directional words used, such as "inside" and "outside", are defined according to the corresponding parts' own contours. The terms used in the present disclosure, such as "first" and "second", etc., are used to distinguish one element from another element and do not have order and importance.

[0027] Embodiment 1:

[0028] A novel enamel plate heat exchange device comprises a plurality of heat exchange plates 1 and sealing gaskets 2. The interlayer between the heat exchange plates 1 forms a heat exchange cavity 3 through the sealing gaskets 2. The characteristic is that the heat exchange cavity 3 is provided with arc chamfers 31 around the periphery. Figure 1 shown.

[0029] The heat exchanger 1 of this embodiment is a rounded rectangular structure, and the side wall of the heat exchanger 1 is provided with an external chamfer 11, such as Figure 2 As shown; the surrounding positions of the heat exchange chamber 1 are set as arc chamfers 31 so that the flow resistance of the fluid at the corner position is reduced when the fluid contacts the heat exchange plane for heat exchange, thereby achieving continuous flow of the fluid at the corner.

[0030] The radius of the arc-shaped chamfers around the heat exchange plate 1 is extended, and the heat exchange plate 1 can also be set to a circular structure.

[0031] In this embodiment, the heat exchange plate 1 is chamfered as a whole. Compared with the traditional right-angle heat exchange plane, the arc chamfer 31 in the heat exchange chamber 3 reduces the area around the heat exchange plane, reduces the risk of forming flow dead corners, and concentrates the fluid on the heat exchange plane in the middle part with good heat exchange effect, so that the overall temperature and material transfer efficiency inside the heat exchanger are stable, thereby improving the heat exchange effect.

[0032] Furthermore, as a pressure vessel, the heat exchanger can reduce the concentration of local stress by making the heat exchanger body 1 smoothly transition after the heat exchanger is assembled by performing external chamfering 11 on the heat exchanger fin 1 as a whole.

[0033] When multiple heat exchange plates 1 and sealing gaskets 2 of this embodiment are installed, the sealing gaskets 2 are arranged at the four sides of the heat exchange plates. The interlayer between two heat exchange plates 1 and the sealing gaskets 2 arranged at the four sides form a heat exchange cavity 3. The sealing gaskets 2 seal the heat exchange cavity 3. Figure 3 shown.

[0034] Embodiment 2:

[0035] A novel enamel plate heat exchange device comprises a plurality of heat exchange plates 1 and sealing gaskets 2. The interlayer between the heat exchange plates 1 forms a heat exchange cavity 3 through the sealing gaskets 2. The characteristic is that the heat exchange cavity 3 is provided with arc chamfers 31 around the periphery. Figure 1 shown.

[0036] The heat exchanger 1 of this embodiment is a rectangular structure, and an annular boss 12 is formed on the upper surface of the heat exchanger 1. The corner of the annular boss 12 is an arc shape. Figure 4 As shown; the inner side of the annular boss 12 forms an arc-shaped heat exchange chamber 3 with an arc chamfer 31, and the bottom of the heat exchange chamber 3 forms a rounded rectangular heat exchange plane through the annular boss 12; the annular boss 12 optimizes the flow of the fluid in the heat exchange plane, reduces the flow resistance, avoids the generation of flow dead corners, stabilizes the overall temperature and material transfer efficiency inside the heat exchanger, and improves the working efficiency and stability of the heat exchange device.

[0037] The annular boss 12 is set as a hollow structure. The annular boss 12 protrudes upward from the heat exchange plate 1. The annular boss 12 is connected to the upper surface of the heat exchange plate 1 by welding or integral molding, so that the heat exchange medium channel set in the fluid cavity inside the heat exchange plate 1 flows as a whole.

[0038] During the implementation process, multiple heat exchange plates 1 and sealing gaskets 2 are installed. The sealing gaskets 2 are arranged around the heat exchange plates 1, and the lower ends of the sealing gaskets 2 are arranged on the outer side of the annular boss 12. In order to achieve better sealing and heat exchange effects, when the heat exchange plate with the annular boss 12 is used, the upper end of the sealing gasket 2 is extended to the inside of the heat exchange cavity 3, so that the upper end extension surface of the sealing gasket 2 and the inner side surface of the annular boss 12 are located in the same plane. The interlayer between the heat exchange plates 1 and the arranged sealing gaskets 2 form a heat exchange cavity 3. The fluid for heat exchange is always located on the inner side of the annular boss 12, and the sealing gasket 2 seals the heat exchange cavity 3. Figure 5 shown.

[0039] The upper surface of the heat exchange plate 1 is provided with an integral annular boss 12, which optimizes the flow of the fluid on the heat exchange plane. After the heat exchange plate 1 with the annular boss 12 is installed with the sealing gasket 2, the fluid in the annular boss 12 of the heat exchange cavity 3 will not directly contact the sealing gasket 2, which is basically the same as Figure 5 As shown; the annular boss 12 is fixedly connected to the heat exchange plate 1 by welding or integral molding so that the heat exchange medium channel arranged inside the heat exchange plate 1 can flow as a whole, and the inner wall of the annular boss 12 is in contact with the fluid, so that the fluid flowing around the heat exchange plate can not only exchange heat on the heat exchange plane but also exchange heat with the annular boss 12 connected to the inner cavity of the heat exchange plate 1, thereby further improving the overall heat exchange effect.

[0040] Embodiment 3:

[0041] Basically as attached Figure 1 To Attachment Figure 2 As shown, a novel enamel flat plate heat exchange device includes a plurality of heat exchange plates 1 and sealing gaskets 2. The interlayer between the heat exchange plates 1 forms a heat exchange cavity 3 through the sealing gaskets 2. The characteristic is that the heat exchange cavity 3 is provided with arc chamfers 31 around it. Figure 1 shown.

[0042] The heat exchanger 1 of this embodiment is a rectangular structure. A downwardly directed rounded rectangular groove 13 is provided on the upper surface of the heat exchanger 1. The rounded rectangular groove 13 is connected to the interior of the heat exchanger 1. Figure 6 shown.

[0043] A rounded rectangular groove 13 with an arc chamfer 31 is opened on the upper surface of the heat exchange plate 1. The rounded rectangular groove 13 that is recessed downward is the heat exchange chamber 3. The rounded rectangular groove 13 optimizes the flow of the fluid in the heat exchange plane and reduces the flow resistance; avoids the generation of flow dead corners, stabilizes the overall temperature and material transfer efficiency inside the heat exchanger, and improves the working efficiency and stability of the heat exchange device.

[0044] During the implementation process, multiple heat exchanger plates 1 and sealing gaskets 2 are installed in layers. In order to achieve a better sealing installation effect, when the sealing gasket 2 is installed on the heat exchanger plate 1 with a rounded rectangular groove 13, the lower end of the sealing gasket 2 is set on the upper end surface of the rounded rectangular groove 13, and the upper end of the sealing gasket 2 is set on the bottom of the upper heat exchanger plate. Since the installation height of the sealing gasket 2 installed on the upper end surface of the rounded rectangular groove 13 is higher than the inner wall of the cavity of the rounded rectangular groove 13, the inner side surface of the sealing gasket 2 and the inner side surface of the rounded rectangular groove are located in the same plane, and the fluid in the heat exchange cavity 3 will not flow to the upper end surface of the rounded rectangular groove 13.

[0045] The fluid in the rounded rectangular groove 13 of the heat exchange cavity 3 will not directly contact the sealing gasket 2, and the rounded rectangular groove 13 and the heat exchange plate 1 are fixedly connected by welding or integral molding so that the heat exchange medium channel set inside the heat exchange plate 1 flows as a whole, and the inner wall of the rounded rectangular groove 13 is in contact with the fluid. The fluid flowing around the heat exchange plate 1 can not only exchange heat on the heat exchange plane but also exchange heat with the side wall of the rounded rectangular groove 13 connected to the inner cavity of the heat exchange plate 1, further improving the overall heat exchange effect. Figure 7 shown.

[0046] Embodiment 4:

[0047] like Figure 8 As shown, the interior of the sealing gasket 2 used in Examples 1 to 3 includes a supporting layer, a pressure regulating layer and an anti-corrosion layer.

[0048] The pressure regulating layer is coated on the outside of the supporting layer. The supporting layer is arranged inside the sealing gasket 2 to shape the body of the sealing gasket 2 and strengthen the supporting function of the sealing gasket 2, so that the sealing gasket 2 will not deform to the side after being squeezed and cause displacement, and prevent the sealing gasket 2 from deforming and displacing under the pressure extrusion, causing the internal material of the heat exchanger 2 to leak and affect the heat exchange effect. The pressure regulating layer is coated on the outside of the supporting layer to ensure the sealing effect and prevent unnecessary leakage. The pressure regulating layer has a certain amount of compression. Under the pressure inside the heat exchanger, the installation position of the heat exchanger 1 is unstable. The pressure regulating layer can fill the gap between the heat exchanger 1 through deformation. The sealing gasket 2 always has pressure transmitted to the sealing contact surface of the heat exchanger 1 to achieve sealing compensation.

[0049] The support layer of this embodiment is composed of a hard plate, and the hard plate can be a stainless steel corrugated plate or an asbestos plate. Both the stainless steel corrugated plate and the asbestos plate have good high temperature resistance and pressure resistance, and can withstand high pressure and high temperature in the heat exchanger. In addition, the hard plate has high hardness and strength, and can withstand the pressure from the upper and lower end surfaces. The pressure regulating layer is used as a sealing compensation position. The material with good compression capacity, such as soft silicone, is used. The pressure regulating layer provides sealing for the heat exchanger to prevent liquid, gas or dust from leaking from the joint part of the heat exchanger equipment, ensure the sealing effect, and prevent unnecessary leakage.

[0050] In order to improve the use effect of the sealing gasket 2, an anti-corrosion layer coated with polytetrafluoroethylene material can be provided on the outer layer of the seal. The polytetrafluoroethylene material has the function of preventing corrosion. The provision of the anti-corrosion layer can improve the service life and pressure resistance of the mechanical sealing device.

[0051] The sealing gasket 2 is installed at the side position between the heat exchanger plates 1. In Example 1, the sealing gasket 2 is arranged around the side position of the heat exchanger plate 1. In Example 2, the lower end of the sealing gasket 2 is arranged on the outer side surface of the annular boss 12 of the heat exchanger plate 1. In Example 3, the bottom of the sealing gasket 2 is arranged on the upper end surface of the rounded rectangular groove 12; the heat exchange device is sealed as a whole.

[0052] Embodiment 5:

[0053] A novel heat exchange device further includes a fastening mechanism 5 , a top plate 6 and a bottom plate 7 , a plurality of heat exchange fins 1 are arranged between the top plate 6 and the bottom plate 7 , and the fastening mechanism 5 connects the top plate 6 , the bottom plate 7 and the plurality of heat exchange fins 1 .

[0054] The heat exchange plate 1 is provided with a plurality of drainage outlets 4, and a plurality of material drainage grooves are provided on the surface of the heat exchange plate 1, and the ends of the material drainage grooves are connected with the drainage outlets 4. A closed heat exchange cavity 3 is also formed between the top plate 6 and the heat exchange plate 1, and a plurality of heat exchange plates 1 are stacked to form a plurality of closed heat exchange cavities 3, and a plurality of the heat exchange cavities 3 form a material channel through the drainage outlets 4, and the drainage outlets of two adjacent heat exchange plates are arranged in opposite directions to form a Z-shaped material channel.

[0055] Among them, a fluid cavity is arranged inside the heat exchanger 1, and two joints are arranged on the side walls of the heat exchanger 1 for the fluid inside the heat exchanger. The joints on the heat exchanger 1 are connected by U-shaped tubes so that the internal fluid cavities between the upper and lower layers of the heat exchanger are connected, so that the fluid cavities inside several heat exchanger fins 1 form a continuous upward flow channel through multiple U-shaped tubes for continuously transporting the fluid as the heat exchange medium. In addition, a reinforcing rib plate can be arranged in the fluid cavity inside the heat exchanger 1, so that the water channel formed by the fluid cavity under the action of the reinforcing rib plate allows the fluid in the fluid cavity inside the heat exchanger 1 to stay longer, thereby improving the heat exchange effect of the heat exchanger.

[0056] The top plate 6 is provided with a feed inlet 61 , and the bottom plate 7 is provided with a discharge port 71 . The feed inlet 61 of the top plate 6 and the discharge port 71 of the bottom plate 7 are staggered on both sides of the drainage outlet 4 of the adjacent heat exchange plate 1 .

[0057] The fastening mechanism 5 is composed of a screw 51, a tubular pressure plate 52 and a locking nut 53. The tubular pressure plate 52 and the locking nut 53 are sleeved on the screw 51. The locking nut 53 is movably connected to the screw 51 through threads. The tubular pressure plate 52 is respectively arranged on the upper surface of the top plate 6 and the lower surface of the bottom plate 7. Figure 1 shown.

[0058] In this embodiment, multiple material drainage grooves are provided on the heat exchanger plate 1 so that the fluid can be converged into the drainage outlet, which helps to drain the side fluid to the middle position, reduce the loss of the fluid on the side of the heat exchanger plate, and drain the fluid on the heat exchanger plate through the material drainage groove to improve the flow efficiency of the fluid. The two adjacent heat exchanger plates 1 are placed in opposite directions so that the drainage outlets are staggered to form a Z-shaped material layer, which can fully utilize the material layer area of ​​the heat exchanger plate 1 to improve the heat exchange effect. The fastening mechanism 5 is evenly arranged on the outside of the heat exchange device so that the heat exchange device can be evenly stressed. The fastening mechanism 5 fastens the top plate 6 and the bottom plate 7 to achieve the fastening and sealing of the heat exchanger plate 1 inside the heat exchange device, and the fastening mechanism 5 is arranged on the outside to facilitate the disassembly and assembly of the heat exchange device.

[0059] The above is only an embodiment of the utility model, and the common knowledge such as the known specific structure and characteristics in the scheme is not described in detail here. It should be pointed out that for those skilled in the art, several deformations and improvements can be made without departing from the structure of the utility model, which should also be regarded as the protection scope of the utility model, and these will not affect the effect of the implementation of the utility model and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. A novel enamel flat plate heat exchange device, comprising a plurality of heat exchange plates (1) and sealing gaskets (2), wherein the interlayer between the heat exchange plates (1) forms a heat exchange cavity (3) through the sealing gasket (2), characterized in that: The heat exchange chamber (3) is provided with arc-shaped chamfers (31) on its periphery.

2. A novel enamel flat plate heat exchange device according to claim 1, characterized in that: The heat exchange plate (1) is a rounded rectangular structure, and the side wall of the heat exchange plate (1) is provided with an external chamfer (11).

3. The novel enamel flat plate heat exchange device according to claim 1 is characterized in that: The heat exchange plate (1) is of a rectangular structure, an annular boss (12) is provided on the upper surface of the heat exchange plate, the corner of the annular boss (12) is in an arc shape, and the interior of the annular boss (12) is connected to the interior of the heat exchange plate (1).

4. The novel enamel flat plate heat exchange device according to claim 1 is characterized in that: The heat exchange plate (1) is of a rectangular structure, and a downwardly facing rounded rectangular groove (13) is provided on the upper surface of the heat exchange plate (1).

5. A novel enamel flat plate heat exchange device according to any one of claims 1 to 4, characterized in that: The heat exchange plate (1) is provided with a plurality of drainage outlets (4), and a plurality of material drainage grooves are provided on the surface of the heat exchange plate (1), and the ends of the material drainage grooves are connected to the drainage outlets (4).

6. A novel enamel flat plate heat exchange device according to any one of claims 1 to 4, characterized in that: It also comprises a fastening mechanism (5), a top plate (6) and a bottom plate (7), wherein a plurality of heat exchange fins (1) are arranged between the top plate (6) and the bottom plate (7), and the fastening mechanism (5) connects the top plate (6), the bottom plate (7) and the plurality of heat exchange fins (1).

7. A novel enamel flat plate heat exchange device according to claim 6, characterized in that: A closed heat exchange cavity (3) is formed between the top plate (6) and the heat exchange plate (1); a plurality of closed heat exchange cavities (3) are formed by stacking a plurality of heat exchange plates (1); a plurality of heat exchange cavities (3) form a material channel through drainage outlets; and the drainage outlets of two adjacent heat exchange plates are arranged in opposite directions to form a Z-shaped material channel.

8. The novel enamel flat plate heat exchange device according to claim 7 is characterized in that: The top plate (6) is provided with a feed inlet (61), and the bottom plate (7) is provided with a discharge port (71). The feed inlet (61) of the top plate (6) and the discharge port (71) of the bottom plate (7) are arranged offset on both sides of the drainage outlet (4) of the adjacent heat exchange plate (1).

9. The novel enamel flat plate heat exchange device according to claim 6 is characterized in that: The fastening mechanism (5) is composed of a screw rod (51), a tubular pressure plate (52) and a locking nut (53). The tubular pressure plate (52) and the locking nut (53) are sleeved on the screw rod. The locking nut (53) is movably connected to the screw rod (51) via a thread. The tubular pressure plate (52) is respectively arranged on the upper surface of the top plate (6) and the lower surface of the bottom plate (7).

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