An explosion-proof pressure relief mechanism for an oven

Abstract

This utility model discloses an explosion-proof pressure relief mechanism for an oven, comprising a hollow mounting flange, a mounting frame, an inner frame, an inner screen, a movable door panel, an aluminum film, an outer screen, an outer frame, and a protective plate. The mounting frame, inner frame, and outer frame are sequentially arranged from bottom to top at the top of the mounting flange. The bottom and top of the mounting frame are respectively provided with a first frame opening and a second frame opening communicating with the interior of the mounting frame. The inner screen is located at the bottom of the mounting frame and inside the mounting flange, corresponding to the first frame opening. The movable door panel is placed at the bottom of the mounting frame, with one side of the movable door panel hinged to the bottom of the mounting frame, corresponding to the first frame opening. The top of the movable door panel is provided with a spike plate, which is close to the other side of the movable door panel and has a pointed end. This utility model can prevent the oven from exploding, ensuring the safety of the oven's use.

Description

Technical Field

[0001] This utility model relates to the field of oven technology, specifically to an explosion-proof pressure relief mechanism for an oven. Background Technology

[0002] Currently, in the production process of lithium battery films, such as PE films, the PE film is generally coated first, and then dried in an oven. During the coating process, 99% of the coating material used is dichloromethane, a flammable, explosive, volatile, and toxic gas. When the PE film is dried in the oven, the dichloromethane in the coating material volatilizes. This gas is then expelled by a suction device inside the oven, such as a fan, to prevent explosions. However, because the oven operates under negative pressure, if the suction device fails to remove the dichloromethane in a timely manner or malfunctions, the concentration of dichloromethane inside the oven can become too high. This increases the internal pressure, and if the pressure reaches its limit, an explosion can easily occur, compromising the safety of the oven's operation.

[0003] Therefore, there is an urgent need for an explosion-proof pressure relief mechanism for ovens to solve the above-mentioned technical problems. Utility Model Content

[0004] In order to overcome the shortcomings of the existing technology, this utility model provides an explosion-proof pressure relief mechanism for an oven, which can prevent the oven from exploding and ensure the safety of the oven.

[0005] The technical solution adopted by this utility model to solve its technical problem is:

[0006] An explosion-proof pressure relief mechanism for an oven includes a hollow mounting flange, a mounting frame, an inner frame, an inner screen, a movable door panel, an aluminum foil, an outer screen, an outer frame, and a protective plate. The mounting frame, inner frame, and outer frame are arranged sequentially from bottom to top at the top of the mounting flange. The bottom and top of the mounting frame are respectively provided with a first frame opening and a second frame opening communicating with the interior of the mounting frame. The inner screen is located at the bottom of the mounting frame and inside the mounting flange, corresponding to the first frame opening. The movable door panel is placed at the bottom inside the mounting frame, with one side of the movable door panel hinged to the bottom inside the mounting frame, corresponding to the first frame opening. The top of the movable door panel is provided with a spike plate, which is close to the other side of the movable door panel and has a pointed end that is close to the second frame opening. The aluminum foil is located between the top of the inner frame and the bottom of the outer frame. The outer screen is located between the aluminum foil and the bottom of the outer frame. The protective plate is detachably mounted at the top of the outer frame.

[0007] As a preferred technical solution, the top of the mounting flange is provided with a mounting position, the mounting position is in communication with the interior of the mounting flange, and the mounting frame is disposed at the bottom of the mounting position.

[0008] As a preferred technical solution, an annular first sealing gasket is provided between the bottom of the mounting position and the bottom of the mounting frame, and the inner screen is located inside the first sealing gasket.

[0009] As a preferred technical solution, the bottom end of the mounting frame is provided with an annular pressure plate, the pressure plate corresponds to the opening of the first frame and is located inside the mounting flange, and the inner screen is provided at the bottom end of the pressure plate.

[0010] As a preferred technical solution, there are two movable door panels, which are symmetrically arranged about the center line of the length direction of the mounting frame. One side of each movable door panel is hinged to the bottom of the mounting frame, and the other side of the two movable door panels is in contact with each other.

[0011] As a preferred technical solution, an annular second sealing gasket is provided between the top end of the mounting frame and the bottom end of the inner frame.

[0012] As a preferred technical solution, an annular third sealing gasket is provided between the bottom end of the aluminum film and the outer frame, and the outer screen is sandwiched between the third sealing gasket and the aluminum film.

[0013] As a preferred technical solution, the two ends of the outer frame are bent downwards to form two first bending members, and the two sides of the outer frame are bent downwards to form two second bending members. The two ends of the second bending members are connected to the two first bending members, and an accommodating space is formed between the two first bending members and the two second bending members. The mounting frame, the second sealing gasket, the inner frame, the aluminum film, the outer screen, and the third sealing gasket are all located within the accommodating space.

[0014] As a preferred technical solution, the outer wall of the mounting flange is provided with an annular mounting groove, the inner wall of the top of the mounting groove is provided with a first mounting hole communicating with the mounting position, the first sealing gasket is provided with a second mounting hole, the bottom end of the mounting frame is provided with a third mounting hole communicating with the interior of the mounting frame, and a first fastener is installed in the first mounting hole, the second mounting hole and the third mounting hole.

[0015] As a preferred technical solution, the top of the mounting frame is provided with a first hole communicating with the interior of the mounting frame, the second sealing gasket is provided with a second hole, the inner frame is provided with a third hole, the aluminum film is provided with a fourth hole, the third sealing gasket is provided with a fifth hole, the outer frame is provided with a sixth hole, and the protective plate is provided with a seventh hole. Second fasteners are installed in the first, second, third, fourth, fifth, sixth, and seventh holes.

[0016] The beneficial effects of this utility model are as follows: This utility model, through its hollow mounting flange, mounting frame, inner frame, inner screen, movable door panel, aluminum film, outer screen, outer frame, and protective plate, allows for pressure relief when the internal pressure of the oven reaches its limit. This pressure difference creates a pressure differential between the inside and outside of the oven, pushing the movable door panel upwards around its hinge point. The spiked plate rotates upwards synchronously with the movable door panel. During this rotation, the spiked plate's tip pierces the aluminum film, leaving a hole. This hole allows the oven's interior to communicate with the external environment, thus depressurizing the oven's interior and providing explosion-proof protection. This prevents the oven from exploding and ensures its safety. The inner and outer screens prevent aluminum film fragments from flying, and the protective plate protects the outer screen and aluminum film during transport, preventing damage. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0018] Figure 1 This is a schematic diagram of the structure of an explosion-proof pressure relief mechanism for an oven according to an embodiment of the present invention, taken from a first angle.

[0019] Figure 2 yes Figure 1 The diagram shows the second angle of the explosion-proof pressure relief mechanism for the oven.

[0020] Figure 3 yes Figure 1 A cross-sectional schematic diagram of the explosion-proof pressure relief mechanism of the oven shown.

[0021] Figure 4 yes Figure 3 A magnified view of a portion of point A shown;

[0022] Figure 5 yes Figure 1 The diagram shows an explosion-proof pressure relief mechanism for an oven.

[0023] Figure label:

[0024] 10. Mounting flange; 11. Mounting position; 12. Mounting groove; 13. First sealing gasket; 131. Second mounting hole;

[0025] 20. Mounting frame; 21. First frame opening; 22. Second frame opening; 23. Pressure plate; 24. Third mounting hole; 25. First hole position;

[0026] 30. Inner screen;

[0027] 40. Movable door panel; 41. Hinge; 42. Barrel; 421. Pointed end;

[0028] 50. Inner frame; 51. Third hole; 52. Second sealing gasket; 521. Second hole;

[0029] 60. Aluminum film; 61. Fourth hole position;

[0030] 70. Outer screen;

[0031] 80. Outer frame; 81a. First bent component; 81b. Second bent component; 82. Third sealing gasket; 821. Fifth hole; 83. Sixth hole;

[0032] 90. Protective plate; 91. Seventh hole. Detailed Implementation

[0033] The following will clearly and completely describe the concept, specific structure, and technical effects of this utility model in conjunction with embodiments and accompanying drawings, so as to fully understand the purpose, features, and effects of this utility model. Obviously, the described embodiments are only a part of the embodiments of this utility model, not all of them. Other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are all within the scope of protection of this utility model. Furthermore, all connections / linkages involved in the patent do not simply refer to direct contact between components, but rather to the ability to form a better connection structure by adding or reducing connecting accessories according to specific implementation conditions. The various technical features in this utility model can be combined interactively without contradicting each other.

[0034] Please refer to Figures 1 to 5 An embodiment of this utility model provides an explosion-proof pressure relief mechanism for an oven, comprising a hollow mounting flange 10, a mounting frame 20, an inner screen 30, a movable door panel 40, an inner frame 50, an aluminum film 60, an outer screen 70, an outer frame 80, and a protective plate 90.

[0035] The mounting flange 10 is used to install at the pressure relief port on the upper part of the oven, and the installation method is, for example, welding. The mounting frame 20, inner frame 50 and outer frame 80 are arranged sequentially from bottom to top at the top of the mounting flange 10. The bottom and top of the mounting frame 20 are respectively provided with a first frame opening 21 and a second frame opening 22 communicating with the interior of the mounting frame 20. The inner screen 30 is set at the bottom of the mounting frame 20 and located inside the mounting flange 10, and the inner screen 30 corresponds to the first frame opening 21. The movable door panel 40 is placed at the bottom inside the mounting frame 20, and one side of the movable door panel 40 is hinged to the bottom inside the mounting frame 20 by a hinge 41. The number of hinges 41 can be set according to the actual situation. The movable door panel 40 corresponds to the first frame opening 21. The top of the movable door panel 40 is provided with a barbed plate 42, which is close to the other side of the movable door panel 40, and the end of the barbed plate 42 forms a point 421, which is close to the second frame opening 22. The aluminum film 60 is positioned between the top of the inner frame 50 and the bottom of the outer frame 80, the outer screen 70 is positioned between the aluminum film 60 and the bottom of the outer frame 80, and the protective plate 90 is detachably positioned at the top of the outer frame 80.

[0036] When the oven is working normally, the inside is under negative pressure. If the suction device fails to remove dichloromethane in time or malfunctions, the concentration of dichloromethane inside the oven will become too high, which will increase the pressure inside the oven. When the pressure inside the oven reaches its limit, there will be a pressure difference between the inside and outside of the oven. This pressure difference will push the movable door panel 40 to rotate upward around the hinge point. The spike plate 42 can rotate upward synchronously with the movable door panel 40. During the rotation of the spike plate 42, the tip 421 of the spike plate 42 can pass through the second frame opening 22, the inside of the inner frame 50 and pierce the aluminum film 60, thus leaving a hole in the aluminum film 60. At this time, the inside of the oven can be connected to the external environment through the hole in the aluminum film 60, which can relieve the pressure inside the oven and play a role in explosion prevention. This can prevent the oven from exploding and ensure the safety of the oven. The inner screen 30 and outer screen 70 prevent fragments of the aluminum film 60 from flying. The protective plate 90 protects the outer screen 70 and aluminum film 60 during transport of the oven's explosion-proof pressure relief mechanism, preventing damage. In practical applications, the protective plate 90 needs to be removed before or after installing the oven's explosion-proof pressure relief mechanism at the pressure relief port on the top of the oven. This allows the interior of the oven to communicate with the external environment through the holes in the aluminum film 60 when the pointed end 421 pierces it.

[0037] In this embodiment, the top of the mounting flange 10 is provided with a mounting position 11, which is connected to the interior of the mounting flange 10. The mounting frame 20 is set at the bottom of the mounting position 11, which can reduce the overall height of the oven explosion-proof pressure relief mechanism.

[0038] A rectangular annular first sealing gasket 13 is provided between the bottom of the mounting position 11 and the bottom of the mounting frame 20, with the inner screen 30 located inside the first sealing gasket 13. A rectangular annular second sealing gasket 52 is provided between the top of the mounting frame 20 and the bottom of the inner frame 50. The second frame opening 22 communicates with the interior of the inner frame 50 through the interior of the second sealing gasket 52. The pointed end 421 can pass through the second frame opening 22, the interior of the second sealing gasket 52, and the interior of the inner frame 50, and pierce the aluminum film 60. A rectangular annular third sealing gasket 82 is provided between the aluminum film 60 and the bottom of the outer frame 80, with the outer screen 70 sandwiched between the third sealing gasket 82 and the aluminum film 60. The materials of the first sealing gasket 13, the second sealing gasket 52, and the third sealing gasket 82 are all, for example, silicone or rubber. The first sealing gasket 13, the second sealing gasket 52, and the third sealing gasket 82 provide a sealing function, enabling a good seal to be formed between the oven explosion-proof pressure relief mechanism and the oven, thus preventing gas inside the oven from leaking into the external environment.

[0039] In this embodiment, a rectangular annular pressure plate 23 is provided at the bottom end of the mounting frame 20. The pressure plate 23 corresponds to the opening 21 of the first frame and is located inside the mounting flange 10. The pressure plate 23 is located inside the first sealing gasket 13, and the inner screen 30 is disposed at the bottom end of the pressure plate 23. The pressure plate 23 provides mounting support for the inner screen 30. The pressure plate 23 is disposed at the bottom end of the mounting frame 20 by, for example, welding, and the inner screen 30 is disposed at the bottom end of the pressure plate 23 by, for example, welding.

[0040] The outer frame 80 has two downward-bent ends forming two first bent parts 81a, and two downward-bent sides forming two second bent parts 81b. The two ends of the second bent parts 81b are welded to the two first bent parts 81a, forming an accommodating space between them. The mounting frame 20, the second sealing gasket 52, the inner frame 50, the aluminum film 60, the outer screen 70, and the third sealing gasket 82 are all located within this accommodating space. The two first bent parts 81a and the two second bent parts 81b protect the second sealing gasket 52, the inner frame 50, the aluminum film 60, the outer screen 70, and the third sealing gasket 82.

[0041] In this embodiment, the outer wall of the mounting flange 10 is provided with an annular mounting groove 12. The inner wall of the top of the mounting groove 12 is provided with a first mounting hole communicating with the mounting position 11. The first sealing gasket 13 is provided with a second mounting hole 131. The bottom end of the mounting frame 20 is provided with a third mounting hole 24 communicating with the interior of the mounting frame 20. First fasteners, such as screws, are installed in the first mounting hole, the second mounting hole 131, and the third mounting hole 24. The number of the first mounting hole, the second mounting hole 131, and the third mounting hole 24 can be set according to the actual situation. This structure facilitates the assembly and disassembly of the mounting flange 10, the first sealing gasket 13, and the mounting frame 20.

[0042] The top of the mounting frame 20 has a first hole 25 communicating with the interior of the mounting frame 20. The second sealing gasket 52 has a second hole 521. The inner frame 50 has a third hole 51. The aluminum film 60 has a fourth hole 61. The third sealing gasket 82 has a fifth hole 821. The outer frame 80 has a sixth hole 83. The protective plate 90 has a seventh hole 91. Second fasteners, such as screws, are installed in the first hole 25, the second hole 521, the third hole 51, the fourth hole 61, the fifth hole 821, the sixth hole 83, and the seventh hole 91. The number of the first hole 25, the second hole 521, the third hole 51, the fourth hole 61, the fifth hole 821, the sixth hole 83, and the seventh hole 91 can be set according to the actual situation. This structure facilitates the assembly and disassembly of the frame 20, the second sealing gasket 52, the inner frame 50, the aluminum film 60, the outer screen 70, the third sealing gasket 82, the outer frame 80, and the protective plate 90.

[0043] In this embodiment, there are two movable door panels 40, which are symmetrically arranged about the center line of the mounting frame 20 along its length. One side of each movable door panel 40 is hinged to the bottom of the mounting frame 20 via a hinge 41, and the other sides of the two movable door panels 40 are in contact with each other. When there is a pressure difference between the inside and outside of the oven, the pressure difference can push the two movable door panels 40 to rotate upward about their respective hinge points. The spikes 42 of the two movable door panels 40 can rotate upward synchronously with their respective movable door panels 40. During the rotation of the spikes 42 of the two movable door panels 40, the tips 421 of the spikes 42 of the two movable door panels 40 can simultaneously pass through the second frame opening 22, the inside of the second sealing gasket 52, the inside of the inner frame 50, and pierce the aluminum film 60.

[0044] Understandably, in other embodiments, only one movable door panel 40 may be provided, which can be set according to the actual situation.

[0045] The above is a detailed description of the preferred embodiments of the present utility model. However, the present utility model is not limited to the described embodiments. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present utility model. All such equivalent modifications or substitutions are included within the scope defined by the claims of this application.

Claims

1. An explosion relief mechanism for an oven, characterized by, The device includes a hollow mounting flange, a mounting frame, an inner frame, an inner screen, a movable door panel, an aluminum foil, an outer screen, an outer frame, and a protective plate. The mounting frame, inner frame, and outer frame are arranged sequentially from bottom to top at the top of the mounting flange. The bottom and top of the mounting frame are respectively provided with a first frame opening and a second frame opening communicating with the interior of the mounting frame. The inner screen is located at the bottom of the mounting frame and inside the mounting flange, corresponding to the first frame opening. The movable door panel is placed at the bottom inside the mounting frame, with one side of the movable door panel hinged to the bottom inside the mounting frame, corresponding to the first frame opening. The top of the movable door panel is provided with a spike plate, which is close to the other side of the movable door panel and has a pointed end, which is close to the second frame opening. The aluminum foil is located between the top of the inner frame and the bottom of the outer frame. The outer screen is located between the aluminum foil and the bottom of the outer frame. The protective plate is detachably installed at the top of the outer frame.

2. The oven explosion relief mechanism of claim 1, wherein, The top of the mounting flange is provided with a mounting position, which communicates with the interior of the mounting flange, and the mounting frame is disposed at the bottom of the mounting position.

3. The oven explosion relief mechanism of claim 2, wherein, An annular first sealing gasket is provided between the bottom of the mounting position and the bottom of the mounting frame, and the inner screen is located inside the first sealing gasket.

4. The oven explosion relief mechanism of claim 1, wherein, The bottom end of the mounting frame is provided with an annular pressure plate, which corresponds to the opening of the first frame and is located inside the mounting flange. The inner screen is provided at the bottom end of the pressure plate.

5. The oven explosion relief mechanism of claim 1, wherein, There are two movable door panels, which are symmetrically arranged about the center line of the length direction of the mounting frame. One side of each movable door panel is hinged to the bottom of the mounting frame, and the other side of the two movable door panels is in contact with each other.

6. The oven explosion relief mechanism of claim 1, wherein, An annular second sealing gasket is provided between the top of the mounting frame and the bottom of the inner frame.

7. The oven explosion relief mechanism of claim 6, wherein, An annular third sealing gasket is provided between the bottom end of the aluminum film and the outer frame, and the outer screen is sandwiched between the third sealing gasket and the aluminum film.

8. The oven explosion relief mechanism of claim 7, wherein, The outer frame has two first bending members bent downwards at both ends, and two second bending members bent downwards on both sides of the outer frame. The two ends of the second bending members are connected to the two first bending members, and an accommodating space is formed between the two first bending members and the two second bending members. The mounting frame, the second sealing gasket, the inner frame, the aluminum film, the outer screen, and the third sealing gasket are all located within the accommodating space.

9. The oven explosion relief mechanism of claim 3, wherein, The outer wall of the mounting flange is provided with an annular mounting groove, the top inner wall of the mounting groove is provided with a first mounting hole communicating with the mounting position, the first sealing gasket is provided with a second mounting hole, the bottom end of the mounting frame is provided with a third mounting hole communicating with the interior of the mounting frame, and a first fastener is installed in the first mounting hole, the second mounting hole and the third mounting hole.

10. The oven explosion relief mechanism of claim 7, wherein, The top end of the mounting frame is provided with a first hole position in communication with the interior of the mounting frame, the second sealing rubber pad is provided with a second hole position, the inner frame is provided with a third hole position, the aluminum film is provided with a fourth hole position, the third sealing rubber pad is provided with a fifth hole position, the outer frame is provided with a sixth hole position, the protective plate is provided with a seventh hole position, and the first hole position, the second hole position, the third hole position, the fourth hole position, the fifth hole position, the sixth hole position and the seventh hole position are provided with a second fastener.

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