A uniform air supply and exhaust system for a dry diaphragm oven

Abstract

The present application relates to a uniform air supply and exhaust system for a dry-process diaphragm oven, and relates to the technical field of diaphragm production equipment, which includes an oven, a heater is provided on one side of the oven, an exhaust assembly and an air supply assembly are provided between the heater and the oven, the exhaust assembly includes an exhaust duct, and the two ends of the exhaust duct are respectively interconnected with the heater and the oven; the air supply assembly includes an air supply duct, and the two ends of the air supply duct are respectively interconnected with the heater and the oven, and an air supply driver for extracting air is provided in the air supply duct. The present application arranges a heater, an air supply assembly and an exhaust assembly on the outside of the oven, so that the air in the oven can be circulated, and the air is heated during the circulation process, so that the air temperature in the oven increases, thereby heating the diaphragm on the diaphragm stretching production line. Due to the use of air heating, the temperature difference between various positions in the oven is small, so that the heating of the diaphragm can be more uniform.

Description

Technical Field

[0001] The present application relates to the technical field of diaphragm production equipment, and in particular to a uniform air supply and exhaust system for a dry-process diaphragm drying oven. Background Art

[0002] Dry-process membrane stretching involves mixing raw materials such as polymers and additives, extruding a uniform melt, and subjecting it to tensile stress to form a lamellar structure. Heat treatment results in a hard, elastic polymer film. The film is then stretched again at a specific temperature to form micropores, and heat-set to produce a microporous membrane. The dry-process membrane process primarily includes dry uniaxial stretching and biaxial stretching.

[0003] The general processing procedures of the dry diaphragm stretching production line are as follows: feeding: PE or PP and additives and other raw materials are pre-treated according to the formula and then transported to the extrusion system; casting: the pre-treated raw materials are melted and plasticized in the extrusion system and then extruded from the die head. The melt is cast to form a base film with a specific crystal structure; heat treatment: the base film is heat-treated to obtain a hard elastic film; stretching: the hard elastic film is cold-stretched and hot-stretched to form a nanoporous membrane; slitting: the nanoporous membrane is cut into finished membranes according to the required specifications.

[0004] Currently, during the stretching process, the diaphragm is often sent to an oven, heated by the oven, and then stretched to improve the toughness of the finished diaphragm.

[0005] However, common ovens often have electric heating tubes installed on their inner walls to heat the diaphragm inside the oven. This results in higher temperatures near the heating tubes and lower temperatures away from the heating tubes, leading to significant temperature differences across the diaphragm. Consequently, under the same tensile force, the diaphragm deforms more where it is hotter and less where it is colder. This results in uneven deformation of the stretched diaphragm, which in turn can lead to uneven thickness in the finished diaphragm. Summary of the Invention

[0006] The present application provides a uniform air supply and exhaust system for a dry-process diaphragm oven, the purpose of which is to increase the uniformity of heating of the diaphragm during the stretching process.

[0007] The present application provides a uniform air supply and exhaust system for a dry process diaphragm oven, which adopts the following technical solutions:

[0008] A uniform air supply and exhaust system for a dry-process diaphragm oven, comprising an oven, a heater provided on one side of the oven, an exhaust assembly and an air supply assembly provided between the heater and the oven, the exhaust assembly comprising an exhaust duct, both ends of the exhaust duct being in communication with the heater and the oven, respectively;

[0009] The air supply assembly includes an air supply duct, both ends of which are respectively connected to the heater and the oven, and an air supply driver for extracting air is provided in the air supply duct.

[0010] By adopting the above technical solution, an oven is set in the dry diaphragm stretching production line to heat the diaphragm, wherein the exhaust duct on the oven is used to send the air in the oven into the heater, and the air supply duct on the lower side of the heater is used to send the air heated by the heater into the oven. In this way, the air circulation in the oven will be realized while the temperature in the oven will be increased, thereby heating the diaphragm in the oven.

[0011] Since air circulation heating is adopted, the temperature difference in different places in the oven is small, so the heating of the diaphragm can be more uniform.

[0012] Optionally, the heater includes a heating pipe, both ends of which are interconnected with the exhaust pipe and the air supply pipe respectively, and a heating oil pipe group for circulating heating oil is wound around the outside of the heating pipe.

[0013] By adopting the above technical solution, the heating pipe in the heater is used to achieve the connection between the air supply pipe and the exhaust pipe, realize the air flow between the air supply pipe and the exhaust pipe, and further realize air circulation.

[0014] The heating oil pipe group can circulate heating oil, and the heating oil pipe group is wound around the outside of the heating pipe, so that the air in the heating pipe can be heated by heat exchange.

[0015] Optionally, a plurality of heating pipes are provided, and the plurality of heating pipes are connected end to end in sequence, one heating pipe is connected to the exhaust pipe, and another heating pipe is connected to the air supply pipe.

[0016] By adopting the above technical solution, several heating pipes are set up, and the several heating pipes are connected to each other end to end, thereby increasing the circulation time of air in the heating pipes, thereby increasing the heating time of air in the heater, and improving the air heating rate.

[0017] Optionally, the plurality of heating pipes are distributed in a ring shape, and each heating pipe is provided with an air outlet short pipe at one end thereof facing the air supply pipe, and each of the air outlet short pipes is interconnected with the corresponding heating pipe;

[0018] A switching disk is provided between the air outlet short pipe and the air supply duct, the switching disk is slidably connected to the end surface of the air outlet short pipe and the switching disk closes all the air outlet short pipes;

[0019] A vent hole is formed through the switching disk, and the vent hole is connected to the corresponding short air outlet pipe;

[0020] The switching disk is provided with a driving motor capable of driving the switching disk to rotate.

[0021] By adopting the above technical solution, the provision of the short air outlet pipe enables each heating pipe to be connected to the air supply pipe.

[0022] The switching plate closes all the heating pipes and separates the heating pipes from the air supply pipes. The switching plate is provided with a connecting hole, which is connected to the corresponding air outlet short pipe, so that the connecting hole can connect the corresponding heating pipes with the air supply pipes.

[0023] By driving the motor to rotate the switching disk, the connecting holes can be switched to connect with different air outlet short pipes. Therefore, through the cooperation of the driving motor and the switching disk, the air circulation time in the heating pipe can be changed, and then the heating effect of the heater on the air can be selected according to the actual temperature in the oven.

[0024] Optionally, a filter assembly is provided between the heater and the air supply duct, and the filter assembly includes a filter layer. The filter layer is located between the exhaust duct and the heater, and the filter layer closes the exhaust duct.

[0025] By adopting the above technical solution, in the filter assembly, the filter layer closes the exhaust duct, so that the air discharged from the exhaust duct into the heater will be filtered through the filter layer, which can reduce impurities in the air and thus improve the environmental cleanliness of the diaphragm stretching in the oven.

[0026] Optionally, the filter assembly further comprises a mounting plate, the mounting plate is provided with a mounting slot, and the mounting slot is plugged into and matched with the heater;

[0027] A communication hole is formed on the mounting plate, the exhaust duct is connected to the mounting plate, and the exhaust duct is connected to the communication hole;

[0028] The filter layer is disposed in the mounting groove and closes the communicating hole.

[0029] By adopting the above technical solution, the installation groove on the installation plate facilitates the installation of the installation plate and the heater, and the connecting hole on the installation plate is provided for connecting the heater. The filter layer is installed in the installation groove, so the installation plate and the heater are installed in a plug-in manner, which also facilitates the replacement of the filter layer.

[0030] Optionally, a connecting sleeve is provided on the mounting plate, the connecting sleeve is connected to the connecting hole, one end of the connecting sleeve is connected to the mounting plate, and the other end is sleeved on the outside of the exhaust duct, and the inner wall of the connecting sleeve is slidably connected along the mounting groove and the plug-in direction of the heater and the outer wall of the exhaust duct.

[0031] By adopting the above technical solution, the connecting sleeve on the mounting plate is connected to the mounting plate, and the connecting sleeve is placed outside the exhaust duct, and the inner wall of the connecting sleeve is slidably connected to the exhaust duct. Therefore, by sliding the connecting sleeve, the mounting plate can be moved away from the heater, thereby separating the heater from the mounting plate, thereby facilitating replacement of the filter layer. Therefore, the provision of the connecting sleeve facilitates the disassembly and assembly of the heater and the mounting plate.

[0032] Optionally, a plurality of air supply ducts are provided, and both ends of the plurality of air supply ducts are respectively connected to the heater and the oven.

[0033] By adopting the above technical solution, a plurality of air supply ducts are provided, the air supply volume of a single air supply duct is reduced, and the flow rate of the air supplied into the oven by the air supply duct is reduced, thereby reducing the disturbance of the air in the oven.

[0034] Optionally, a wind shield box is provided in the air supply duct, and an opening of the wind shield box is communicated with the air supply duct;

[0035] The wind shield box is slidably connected to the inner wall of the air supply duct, and an air release hole is formed through the side wall of the wind shield box.

[0036] By adopting the above technical solution, the windshield is installed so that when the air supply duct is in operation, the air flow in the air supply duct causes the windshield to slide from the air supply duct into the oven, and air flows out through the vent holes on the side wall of the windshield. Therefore, the position of the vent holes on the windshield is changed to be located on the side wall of the windshield facing away from the diaphragm stretching line. This prevents the air flow from directly hitting the diaphragm, reduces the disturbance of the air flow on the diaphragm, and improves the diaphragm stretching effect.

[0037] Optionally, a sliding ring groove is provided on the inner wall of the air supply duct, and a sliding ring plate is provided on the outer wall of the wind shield box. The sliding ring plate is plugged into the sliding ring groove and is slidably connected to the inner wall of the sliding ring groove along the length direction of the air supply duct.

[0038] By adopting the above technical solution, the sliding ring plate is arranged on the side wall of the wind shield box, and the sliding ring groove is opened on the inner wall of the corresponding air supply duct. When the wind shield box slides in the air supply duct, the sliding ring plate can be arranged opposite to the opposite side walls of the sliding ring groove along the sliding direction, so that the sliding ring groove and the sliding ring plate can limit the wind shield box to prevent the wind shield box from sliding directly into the oven from the air supply duct.

[0039] In summary, this application includes at least one of the following beneficial technical effects:

[0040] 1. This application utilizes a heater, air supply assembly, and exhaust assembly installed outside the oven to circulate the air within the oven. During this circulation process, the air is heated, raising the temperature within the oven and thereby heating the diaphragms on the diaphragm stretching line. Due to the use of air heating, the temperature difference between locations within the oven is minimal, resulting in more uniform heating of the diaphragms.

[0041] 2. A filter assembly is provided in the present application, which can filter the circulating air and then send it back into the oven, thereby reducing the impurities in the air in the oven and improving the product quality after the diaphragm is stretched.

[0042] 3. This application sets a wind shield box in the air supply duct so that the air flow sent into the air supply duct is not directly facing the diaphragm stretching production line, which can reduce the disturbance of the air flow to the diaphragm and improve the product quality of the diaphragm stretching. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Figure 1 It is a schematic diagram of the overall structure of the heating device in this application.

[0044] Figure 2 It is a schematic diagram of the overall structure of the heater in this application.

[0045] Figure 3 It is a schematic diagram of the internal structure of the heater in this application.

[0046] Figure 4 It is a schematic diagram of the overall structure of several heating pipes and connecting main pipes in this application.

[0047] Figure 5 It is a schematic cross-sectional view of the filter assembly and heater in this application.

[0048] Figure 6 yes Figure 5 Schematic diagram of the locally enlarged structure of part A.

[0049] Figure 7 It is a schematic diagram of the exploded structure of the air supply component in this application.

[0050] In the figure, 1. mounting frame;

[0051] 2. Oven;

[0052] 3. Heater; 31. Mounting box; 32. Connecting main pipe; 33. Heating pipe; 34. Auxiliary connecting piece; 341. Air outlet; 35. Short air outlet pipe; 36. Switching plate; 361. Air vent; 362. Drive motor; 363. Mounting ring; 364. Mounting long plate; 37. Heating oil pipe assembly; 371. First heating pipe; 372. Second heating pipe.

[0053] 4. Exhaust assembly; 41. Exhaust duct; 42. First connecting ring; 43. Connecting column;

[0054] 5. Air supply assembly; 51. Air supply duct; 52. Air supply driver; 53. Windshield; 531. Air vent; 532. Sliding ring plate; 533. Sliding ring groove;

[0055] 6. Filter assembly; 61. Filter layer; 62. Mounting plate; 621. Mounting groove; 622. Connecting hole; 63. Connecting sleeve; 631. Second connecting ring; 632. Plug hole; 633. Locking nut. DETAILED DESCRIPTION

[0056] The following is combined with Figure 1 -Attached Figure 7 , further details of this application are given.

[0057] A uniform air supply and exhaust system for a dry diaphragm oven, refer to Figure 1 The invention relates to a device for heating oven 2, comprising a mounting frame 1, an oven 2, a heater 3, an exhaust assembly 4, and an air supply assembly 5. The oven 2 is mounted on one side of the mounting frame 1 in a horizontal direction, and the heater 3 is mounted on the mounting frame 1. The exhaust assembly 4 includes an exhaust duct 41, and the air supply assembly 5 includes an air supply duct 51. The exhaust duct 41 is mounted above the heater 3, and its ends are connected to the heater 3 and the oven 2, respectively. The air supply duct 51 is mounted below the heater 3, and its ends are connected to the heater 3 and the oven 2, respectively. The air supply assembly 5 also includes an air supply driver 52, which in this application is a fan. The air supply driver 52 is mounted below the heater 3 and within the air supply duct 51. Therefore, under the action of the air supply driver 52, the air in the oven 2 enters the heater 3 through the exhaust duct 41. After the air is heated by the heater 3, the heated air is discharged into the oven 2 through the air supply duct 51, thereby achieving both circulation and heating of the air in the oven 2.

[0058] Reference Figure 2 and Figure 3The heater 3 includes an installation box 31, in which a connecting main pipe 32 and a plurality of heating pipes 33 are arranged. The connecting main pipe 32 and the plurality of heating pipes 33 are arranged in a vertical direction. The plurality of heating pipes 33 are evenly spaced along the circumference of the connecting main pipe 32. The upper end of the connecting main pipe 32 is connected to the exhaust pipe 41.

[0059] Reference Figure 3 and Figure 4 An auxiliary connecting piece 34 is provided at the lower end of the connecting main pipe 32. One end of the auxiliary connecting piece 34 is connected to the lower end of the connecting main pipe 32, and the other end is connected to the lower end of a corresponding heating pipe 33. An air outlet 341 is formed on the lower side of the auxiliary connecting piece 34, and the air outlet 341 is connected to the heating pipe 33. Therefore, when the air outlet 341 is closed, the connecting main pipe 32 will send the air in the exhaust pipe 41 into the corresponding heating pipe 33; when the air outlet 341 is open, the connecting main pipe 32 will exhaust the air in the exhaust pipe 41 through the air outlet 341.

[0060] Reference Figure 4 Several heating pipes 33 are connected to each other end to end in sequence. Along the flow direction of air in the several heating pipes 33, the upper end of the first heating pipe 33 is connected to the exhaust pipe 41, and the lower end of the heating pipe 33 is provided with an air outlet short pipe 35, which is connected to the corresponding heating pipe 33.

[0061] Reference Figure 5 A switching disk 36 is provided in the installation box 31. The switching disk 36 is slidably connected to the inner wall of the installation box 31. The lower end surface of the air outlet short pipe 35 is flush with the lower side surface of the auxiliary connecting piece 34. The upper side of the switching disk 36 is slidably connected to the lower side surface of the air outlet short pipe 35 and the lower side surface of the auxiliary connecting piece 34. The switching disk 36 closes all the air outlet short pipes 35 and the air outlet 341. A vent 361 is opened through the switching disk 36, and the vent 361 is communicated with the corresponding air outlet short pipe 35 or the air outlet 341.

[0062] Reference Figure 5A mounting ring 363 is provided on the lower side of the switching disk 36, and the mounting ring 363 is fixedly connected to the inner wall of the mounting box 31. A mounting long plate 364 is provided on the mounting ring 363, and the two ends of the mounting long plate 364 are interconnected with the mounting ring 363. A driving motor 362 is provided on the upper side of the mounting long plate 364, and the output shaft of the driving motor 362 is coaxially connected to the switching disk 36. Therefore, under the drive of the driving motor 362, the vent holes 361 on the switching disk 36 can be interconnected with the corresponding air outlet short pipes 35 or air outlet 341, respectively, and the other air outlet short pipes 35 or other air outlet short pipes 35 and air outlet 341 are closed, so that only one air outlet short pipe 35 or only the air outlet 341 can discharge air, thereby changing the flow time of the air discharged from the exhaust duct 41 in the heater 3, and further changing the temperature of the air discharged from the heater 3.

[0063] Reference Figure 3 and Figure 5 The heater 3 is provided with a heating oil pipe group 37, which includes a first heating pipe 371 and a second heating pipe 372. Both the first heating pipe 371 and the second heating pipe 372 are spiral pipes. The first heating pipe 371 surrounds the outside of the connecting main pipe 32, and the second heating pipe 372 surrounds the outside of the plurality of heating pipes 33. The first heating pipe 371 and the second heating pipe 372 are interconnected. Therefore, when heating oil is introduced into the first heating pipe 371, the heating oil can sequentially pass through the first heating pipe 371 and the second heating pipe 372 before being discharged from the second heating pipe 372. Therefore, when the heating oil flows through the first heating pipe 371 and the second heating pipe 372, it can exchange heat with the air flowing through the connecting main pipe 32 and the plurality of heating pipes 33, thereby heating the air.

[0064] Reference Figure 5 A filter assembly 6 is further provided between the exhaust duct 41 and the heater 3. The filter assembly 6 includes a filter layer 61. The filter layer 61 is installed between the exhaust duct 41 and the connecting pipe 32 and seals the connecting pipe 32. Therefore, the filter assembly 6 can filter the air drawn into the exhaust duct 41.

[0065] Reference Figure 5 The filter assembly 6 also includes a mounting plate 62, with a mounting slot 621 defined on its lower side. The mounting plate 62 is positioned above the mounting box 31, with the mounting slot 621 vertically plugged into the mounting box 31. The filter layer 61 is mounted within the mounting slot 621. A connecting hole 622 is defined on the upper side of the mounting plate 62, which communicates with the mounting slot 621. The exhaust duct 41 is connected to the upper side of the mounting plate 62, and the exhaust duct 41 is also connected to the connecting hole 622. Therefore, the mounting plate 62 connects the exhaust duct 41 to the heater 3 while also providing space for the filter layer 61 to be installed.

[0066] Reference Figure 5 A connecting sleeve 63 is provided on the upper side of the mounting plate 62. One end of the connecting sleeve 63 is fixedly connected to the mounting plate 62. The connecting sleeve 63 is coaxially arranged with the communication hole 622 and the connecting sleeve 63 and the communication hole 622 are in communication with each other. The connecting sleeve 63 is sleeved on the exhaust duct 41, and the inner wall of the connecting sleeve 63 is slidably connected to the exhaust duct 41 along the axial direction of the connecting sleeve 63. Therefore, the connecting sleeve 63 can connect the exhaust duct 41 with the mounting plate 62. At the same time, the connecting sleeve 63 can drive the mounting plate 62 to move along the axial direction of the connecting sleeve 63, thereby facilitating the replacement of the filter layer 61 within the mounting plate 62.

[0067] Reference Figure 5 and Figure 6 A first connecting ring 42 is provided on the outer side wall of one end of the exhaust duct 41 facing the mounting plate 62, and the first connecting ring 42 is coaxially arranged with the exhaust duct 41. A second connecting ring 631 is provided on the inner wall of the connecting sleeve 63 on the side away from the mounting plate 62, and the second connecting ring 631 is coaxially arranged with the connecting sleeve 63. The first connecting ring 42 and the second connecting ring 631 are arranged opposite to each other along the axial direction of the connecting sleeve 63, and the second connecting ring 631 is located on the upper side of the first connecting ring 42.

[0068] Reference Figure 5 and Figure 6 A plurality of plug-in posts 43 are provided on the side of the first connecting ring 42 facing the second connecting ring 631. The plug-in posts 43 are evenly spaced along the circumference of the first connecting ring 42, and the axial direction of the plug-in posts 43 is arranged in the vertical direction. A plurality of plug-in holes 632 are provided on the second connecting ring 631, and the plurality of plug-in holes 632 penetrate the second connecting ring 631 along the axial direction of the second connecting ring 631. The plurality of plug-in holes 632 are evenly spaced along the circumference of the second connecting ring 631. The plug-in holes 632 are provided in a one-to-one correspondence with the plug-in posts 43. The plug-in holes 632 are plugged into and matched with the corresponding plug-in posts 43, and the plug-in posts 43 are slidably connected to the inner wall of the corresponding plug-in holes 632 along their own axial direction. A locking nut 633 is threadedly connected to the plug-in post 43. Along the axial direction of the plug-in post 43, the second connecting ring 631 is located between the locking nut 633 and the first connecting ring 42.

[0069] Therefore, when the locking nut 633 is tightened, the second connecting ring 631 is located between the locking nut 633 and the first connecting ring 42, thereby locking the mounting plate 62. At this time, the second connecting ring 631 is tightly pressed against the first connecting ring 42, ensuring the airtightness between the connecting sleeve 63 and the exhaust duct 41, while ensuring that the mounting plate 62 and the heater 3 can be installed and fixed. After all the locking nuts 633 are unscrewed from the corresponding plug-in posts 43, the connecting sleeve 63 can move along its own axis on the exhaust duct 41, thereby allowing the mounting plate 62 to be removed from the heater 3, thereby facilitating the replacement of the filter layer 61.

[0070] Reference Figure 1 and Figure 7 Several air supply ducts 51 are provided, each of which is interconnected at one end with the heater 3. A plurality of air supply holes are sequentially provided horizontally on the oven 2, extending through the sidewall of the oven 2. Each of the air supply holes corresponds to one of the air supply ducts 51. Each of the air supply ducts 51 is connected to the oven 2 at one end, and the air supply ducts 51 are interconnected with the corresponding air supply holes. Therefore, the provision of the plurality of air supply ducts 51 allows the air within the heater 3 to be evenly discharged into the oven 2, thereby reducing air fluctuations within the oven 2 and minimizing the effect on the stretching of the diaphragm.

[0071] Reference Figure 7 A windshield 53 is provided in the air supply duct 51. The windshield 53 is provided at one end of the air supply duct 51 close to the oven 2. The windshield 53 is in communication with the inner wall of the air supply duct 51, and the open side of the windshield 53 is in communication with the air supply duct 51. A plurality of air vents 531 are provided on the lower side of the windshield 53, and the air vents 531 penetrate the windshield 53. Therefore, when the air supply driver 52 is working, the air pressure in the air supply duct 51 increases, which pushes the windshield 53 into the oven 2 along the air supply duct 51, and the air in the air supply duct 51 is discharged from the air vents 531 on the lower side of the windshield 53. Therefore, the air vents 531 can guide the air in the air supply duct 51, so that the air discharged into the oven 2 will not be ejected directly towards the diaphragm, thereby reducing the disturbance of the air flow on the diaphragm.

[0072] Reference Figure 7A sliding ring groove 533 is formed on the inner wall of the air supply duct 51, and a sliding ring plate 532 is provided on the outer wall of the air shield box 53 on the side away from the oven 2. The sliding ring plate 532 is slidably connected to the inner wall of the sliding ring groove 533 along the length direction of the air supply duct 51. Therefore, the sliding ring plate 532 cooperates with the sliding ring groove 533 so that the sliding ring plate 532 is arranged opposite to the inner walls of the sliding ring groove 533 on opposite sides along the length direction of the air supply duct 51. Therefore, the cooperation between the sliding ring plate 532 and the sliding ring groove 533 can limit the sliding movement of the air shield box 53 in the air supply duct 51, preventing the air shield box 53 from being completely retracted into the air supply duct 51, or preventing the air shield box 53 from being blown into the oven 2 when the air supply driver 52 is in operation.

[0073] A temperature control component is provided in the oven 2 , and the temperature control component includes a plurality of temperature sensors. The plurality of temperature sensors are all provided in the oven 2 so as to detect the air temperature in the oven 2 .

[0074] The implementation principle of the embodiment of the present application is: when the temperature sensor detects that the temperature inside the oven 2 is low, the heater 3 is started, and the heating oil is passed into the first heating tube 371 and the second heating tube 372, and the air supply driver 52 is started, so that the exhaust duct 41 sends the air in the oven 2 into the heater 3. After the air passes through the connecting main pipe 32 and several heating pipes 33, it is sent into the air supply duct 51 from the vent hole 361 on the switching disk 36, and then the heated air will be discharged into the oven 2 from the air vent 531 of the wind shield box 53, thereby realizing the air circulation in the oven 2 and heating the air in the oven 2 at the same time.

[0075] When the temperature in the oven 2 is detected to be too low, the switching disk 36 is rotated so that the air passes through more heating pipes 33, so that the air heating time is longer, and the air temperature in the oven 2 can rise faster; when the temperature in the oven 2 is close to the required temperature, the switching disk 36 is rotated so that the air only passes through the connecting main pipe 32, so that the air heating time is minimized, so that the temperature in the oven 2 rises more slowly, making it easier to control the temperature in the oven 2 near the required temperature.

[0076] The examples of this specific embodiment are all preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, any equivalent changes made based on the structure, shape, and principle of this application should be included in the scope of protection of this application.

Claims

1. A uniform air supply and exhaust system for a dry process diaphragm oven, comprising an oven (2), characterized in that: A heater (3) is provided on one side of the oven (2), and an exhaust assembly (4) and an air supply assembly (5) are provided between the heater (3) and the oven (2), wherein the exhaust assembly (4) includes an exhaust duct (41), and both ends of the exhaust duct (41) are in communication with the heater (3) and the oven (2) respectively; the air supply assembly (5) includes an air supply duct (51), and both ends of the air supply duct (51) are in communication with the heater (3) and the oven (2) respectively, and an air supply driver (52) for extracting air is provided in the air supply duct (51); The heater (3) includes a plurality of heating pipes (33), and the plurality of heating pipes (33) are connected end to end in sequence, one of the heating pipes (33) is connected to the exhaust pipe (41), and another of the heating pipes (33) is connected to the air supply pipe (51). Several heating pipes (33) are distributed in a ring shape, and one end of each heating pipe (33) facing the air supply pipe (51) is provided with an air outlet short pipe (35), and each of the air outlet short pipes (35) is communicated with the corresponding heating pipe (33); a switching disk (36) is provided between the air outlet short pipe (35) and the air supply pipe (51), and the switching disk (36) is slidably connected to the end surface of the air outlet short pipe (35), and the switching disk (36) closes all the air outlet short pipes (35); a vent hole (361) is opened through the switching disk (36), and the vent hole (361) is communicated with the corresponding air outlet short pipe (35); a driving motor (362) capable of driving the switching disk (36) to rotate is provided on the switching disk (36); A windshield box (53) is provided in the air supply duct (51), and an opening of the windshield box (53) is communicated with the air supply duct (51); the windshield box (53) is slidably connected to the inner wall of the air supply duct (51), and an air release hole (531) is provided through the side wall of the windshield box (53).

2. The uniform air supply and exhaust system for a dry process diaphragm oven according to claim 1, characterized in that: A heating oil pipe group (37) for circulating heating oil is wound around the outside of the heating pipe (33).

3. The uniform air supply and exhaust system for a dry process diaphragm oven according to claim 1, characterized in that: A filter assembly (6) is provided between the heater (3) and the air supply duct (51), the filter assembly (6) comprising a filter layer (61), the filter layer (61) being located between the exhaust duct (41) and the heater (3), and the filter layer (61) sealing the exhaust duct (41).

4. The uniform air supply and exhaust system for a dry process diaphragm oven according to claim 3, characterized in that: The filter assembly (6) further comprises a mounting plate (62), a mounting groove (621) being provided on the mounting plate (62), and the mounting groove (621) being plugged into and matched with the heater (3); a connecting hole (622) being provided on the mounting plate (62), the exhaust duct (41) and the mounting plate (62) being interconnected, and the exhaust duct (41) and the connecting hole (622) being interconnected; the filter layer (61) being arranged in the mounting groove (621), and the filter layer (61) sealing the connecting hole (622).

5. The uniform air supply and exhaust system for a dry process diaphragm oven according to claim 4, characterized in that: A connecting sleeve (63) is provided on the mounting plate (62), the connecting sleeve (63) and the communicating hole (622) are communicated with each other, one end of the connecting sleeve (63) is connected to the mounting plate (62), and the other end is sleeved on the outside of the exhaust duct (41), and the inner wall of the connecting sleeve (63) is slidably connected to the outer wall of the exhaust duct (41) along the plugging direction of the mounting groove (621) and the heater (3).

6. The uniform air supply and exhaust system for a dry process diaphragm oven according to claim 1, characterized in that: A plurality of air supply ducts (51) are provided, and both ends of the plurality of air supply ducts (51) are respectively connected to the heater (3) and the oven (2).

7. The uniform air supply and exhaust system for a dry process diaphragm oven according to claim 1, characterized in that: The inner wall of the air supply duct (51) is provided with a sliding ring groove (533), and the outer wall of the wind shield box (53) is provided with a sliding ring plate (532). The sliding ring plate (532) is plugged into the sliding ring groove (533), and the sliding ring plate (532) is slidably connected to the inner wall of the sliding ring groove (533) along the length direction of the air supply duct (51).

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