Internal and external air inlet device for integrated boiler

Abstract

The present invention relates to the technical field of integrated boiler auxiliary equipment, and specifically to an internal and external air intake device applied to an integrated boiler, comprising: a circulation tube body, an internal air intake channel and an external air intake channel are provided inside the circulation tube body, the internal air intake channel and the external air intake channel are connected to each other on the inner side, a linkage switching mechanism is installed on one side of the inner wall of the internal air intake channel and the external air intake channel inside the circulation tube body, the linkage switching mechanism comprises a driving component and a closing component, the driving component is used to control the closing component to move, and the closing component is used to block or open the internal air intake channel and the external air intake channel. The beneficial effect of the present invention is that the internal and external air intake can be switched on and off according to the changes in season and ambient temperature, ensuring that the integrated boiler can operate normally in different seasons, and effectively avoiding damage to the equipment caused by the internal ambient temperature being too low due to the air intake in winter.

Description

Technical Field

[0001] The present invention relates to the technical field of integrated boiler auxiliary equipment, and in particular to an internal and external air inlet device applied to an integrated boiler. Background Art

[0002] When the boiler is operating, the combustion process requires a continuous supply of air, generating a significant amount of heat. To ensure the proper operation of electrical instruments and other equipment within the container and prevent overheating, a blower is typically used in the summer to draw air in and lower the ambient temperature within the container. At this time, the container's movable shutters are open, creating a good ventilation and heat dissipation effect. However, in winter, especially in northern China, where ambient temperatures can fall well below 0°C, if the shutters are still open to draw in air, the large amount of cold air that enters the container can cause the internal temperature to drop too low, potentially freezing the water system and instruments. This not only poses a serious safety hazard to the boiler's operation but can also damage the equipment, impacting the normal operation of the integrated boiler and increasing maintenance costs and downtime. Summary of the Invention

[0003] In response to the deficiencies of the prior art, the present invention provides an internal and external air inlet device for an integrated boiler, which can solve the problem raised in the above background technology that ventilation will affect the normal use of the integrated boiler, increase maintenance costs and downtime.

[0004] The following is the technical solution of the present invention, an internal and external air intake device applied to an integrated boiler, comprising: a circulation pipe main body, an internal air intake channel and an external air intake channel are opened inside the circulation pipe main body, the internal air intake channel and the internal side of the external air intake channel are connected, and a linkage switching mechanism is installed on one side of the inner wall of the internal air intake channel and the external air intake channel inside the circulation pipe main body, the linkage switching mechanism includes a driving component and a closing component, the driving component is used to control the movement of the closing component, and the closing component is used to block or open the internal air intake channel and the external air intake channel.

[0005] As a preferred solution of the present invention, the driving assembly includes an installation groove installed in the center of the inner wall of the circulation tube body, a connecting frame is installed on the inner wall of the installation groove, a first motor is installed at both ends of the bottom of the connecting frame, and multiple groups of partitions are arranged and installed at the ports of the inner air inlet channel and the outer air inlet channel on the inner wall of the circulation tube body.

[0006] As a preferred solution of the present invention, the closing component includes sliding grooves provided at both ends of the inner wall of the circulation tube body and located at the bottom end of the partition, a sliding plate is slidingly connected to the inside of the sliding groove, and multiple groups of closing plates are rotatably connected to one side of the sliding plate. A movable rod is rotatably connected at the center of the closing plate, and one end of the movable rod extends to the outside of the closing plate and is fixedly connected to the inner wall of the circulation tube body. A first sealing gasket is embedded and installed at both ends of the closing plate, a limiting groove is provided on the inner wall of the sliding groove, and a limiting block slidably connected to the limiting groove is installed at one end of the bottom of the sliding plate. The cross-sections of the limiting groove and the limiting block are both T-shaped, and a second sealing gasket is embedded and installed at the top of the sliding plate.

[0007] As a preferred solution of the present invention, the other end of the circulation tube body is connected to a filter frame through a connecting mechanism, a filter screen is embedded in the inner wall of the filter frame, a third sealing gasket is embedded on both sides of the filter frame, a docking tube is installed on one side of the outer wall of the filter frame, a pressing plate is slidably connected to the inner wall of the docking tube, a pressing groove is provided on one side of the pressing plate, and a connecting rod is installed at the other end of the pressing plate.

[0008] As a preferred solution of the present invention, a synchronization groove is opened on one side of the inner wall of the docking tube, and a synchronization block is slidably connected to the inner side of the synchronization groove. The cross-sections of the synchronization block and the synchronization groove are both T-shaped, and a first spring is installed between the inner wall of the synchronization groove and the outer wall of the synchronization block.

[0009] As a preferred solution of the present invention, a card slot is provided on one side of the outer wall of the circulation tube body, a card plate slidably connected to the card slot is installed on the other end of the connecting rod, a telescopic slot is provided on one side of the inner wall of the card slot, a telescopic plate is slidably connected to the inner wall of the telescopic slot, the cross-sections of the telescopic plate and the telescopic slot are both T-shaped, and a second spring is installed between the two ends of one side of the telescopic plate and the inner wall of the telescopic slot.

[0010] As a preferred solution of the present invention, an arc-shaped support plate is installed at the other end of the telescopic plate, and an elastic pad is installed on the other side of the arc-shaped support plate. The elastic pad is made of rubber. An arc-shaped groove is opened at one end of the card plate to fit the elastic pad, and the cross-section of the card plate is L-shaped.

[0011] As a preferred solution of the present invention, a deflection groove is provided on one side of the card slot inside the circulation tube body, a rotating rod is rotatably connected to the inner side of the deflection groove, a deflection plate is fixedly sleeved on one end of the outer wall of the rotating rod, and relative inclined surfaces are provided on the opposite ends of the deflection plate and the card plate, a torsion spring is installed between the rotating rod and the inner wall of the deflection groove, a torsion groove is provided on one side of the outer wall of the circulation tube body, a shift plate is installed on the end of the rotating rod extending to the inner side of the torsion groove, a placement groove extending to the inner side is provided on the outer wall of the circulation tube body on one side of the torsion groove, the filter frame is slidably connected to the placement groove, a temperature sensor is embedded and installed on the outer wall of the circulation tube body between the placement groove and the torsion groove, and the detection end of the temperature sensor extends to the inner side of the circulation tube body.

[0012] As a preferred solution of the present invention, a top groove is opened at the top of the circulation tube body, a top cover is slidably connected to the inner side of the top groove, a fourth sealing gasket is embedded in the outer wall of the top cover, and the outer wall of the fourth sealing gasket is in contact with the inner wall of the top groove.

[0013] As a preferred solution of the present invention, an adjusting column is installed at one end of the top of the circulation tube body, and an adjusting groove is opened on one side of the adjusting column. A threaded rod is rotatably connected to the inner side of the adjusting groove, and an adjusting plate is threadedly connected to the outer side of the threaded rod. One end of the adjusting plate is fixedly connected to one side of the top cover, and a second motor is installed at the top of the adjusting column. The driving end of the second motor extends to the inner side of the adjusting groove and is fixedly connected to one end of the threaded rod. Fans are installed at the ports of the inner air inlet channel and the outer air inlet channel.

[0014] The beneficial effects of the present invention are:

[0015] 1. In the present invention, the internal and external air intakes can be switched on and off according to the changes in seasons and ambient temperature, thereby ensuring that the integrated boiler can operate normally in different seasons and effectively avoiding damage to the equipment caused by the low internal ambient temperature due to air intake in winter;

[0016] 2. In the present invention, the temperature sensor can monitor the inlet air temperature in real time, and the action of the blocking plate can be regulated according to the temperature, thereby realizing intelligent inlet air switching and improving the stability and reliability of the equipment operation;

[0017] 3. In the present invention, the filter can effectively filter dust, impurities, etc. in the external air to protect the fan and boiler system; and improve the quality of the circulating air in the container, which is conducive to the normal operation of equipment such as electrical instruments. Moreover, the staff can quickly disassemble the filter for cleaning and maintenance to ensure the air purification effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0019] Figure 2 This is a schematic diagram of the structure without a top cover of the present invention;

[0020] Figure 3 This is a schematic diagram of the three-dimensional structure of the linkage switching mechanism of the present invention;

[0021] Figure 4 This is a schematic diagram of a partial three-dimensional structure of the flow pipe body of the present invention;

[0022] Figure 5 It is a partial cross-sectional structural diagram of the connection between the butt joint sleeve and the flow pipe body of the present invention;

[0023] Figure 6 This is a schematic diagram of the three-dimensional structure of the filter frame and filter screen of the present invention;

[0024] Figure 7 This is a schematic diagram of the three-dimensional structure of the closing plate of the present invention;

[0025] Figure 8 This is a schematic diagram of the three-dimensional structure of the adjustment column of the present invention;

[0026] In the figure: 1. circulation tube body; 2. connecting frame; 3. first motor; 4. partition; 5. sliding plate; 6. closing plate; 7. movable rod; 8. first sealing gasket; 9. limit block; 10. filter frame; 11. filter screen; 12. third sealing gasket; 13. docking tube; 14. pressing plate; 15. first spring; 16. card plate; 17. telescopic plate; 18. arc-shaped supporting plate; 19. elastic pad; 20. synchronization block; 21. deflection plate; 22. inclined plane; 23. dial plate; 24. temperature sensor; 25. top cover; 26. fourth sealing gasket; 27. adjusting column; 28. threaded rod; 29. ​​adjusting plate; 30. second motor; 31. fan. DETAILED DESCRIPTION

[0027] To make the technical problems solved, the technical solutions adopted, and the technical effects achieved by the present invention more clearly understood, the technical solutions of the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings. It is obvious that the described embodiments are only part of the embodiments of the present invention, not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative work shall fall within the scope of protection of the present invention.

[0028] Example:

[0029] like Figures 1 to 8 As shown, an internal and external air intake device applied to an integrated boiler includes: a circulation pipe main body 1, an internal air intake channel and an external air intake channel are opened inside the circulation pipe main body 1, the internal air intake channel and the external air intake channel are connected on the inner side, and a linkage switching mechanism is installed on one side of the inner wall of the internal air intake channel and the external air intake channel inside the circulation pipe main body 1, the linkage switching mechanism includes a driving component and a closing component, the driving component is used to control the closing component to move, and the closing component is used to block or open the internal air intake channel and the external air intake channel. When in use, the invention can control the closing component to move by the driving component, and the closing component blocks or opens the internal air intake channel and the external air intake channel, and can realize the switching of the internal and external air intake on and off according to the changes in seasons and ambient temperature, thereby ensuring that the integrated boiler can operate normally in different seasons, and effectively avoiding damage to the equipment caused by the low internal ambient temperature due to air intake in winter.

[0030] In this embodiment, if Figure 1 、 Figure 2 and Figure 3As shown, the driving component includes a mounting groove installed at the center of the inner wall of the circulation tube body 1, a connecting frame 2 is installed on the inner wall of the mounting groove, and a first motor 3 is installed at both ends of the bottom of the connecting frame 2. The inner wall of the circulation tube body 1 is located at the ports of the inner air inlet channel and the outer air inlet channel, and multiple groups of partitions 4 are arranged and installed. The outer wall of the circulation tube body 1 is embedded with a temperature sensor 24 between the placement groove and the torsion groove, and the detection end of the temperature sensor 24 extends to the inner side of the circulation tube body 1. The closing component includes sliding grooves at both ends of the inner wall of the circulation tube body 1 at the bottom end of the partition 4, and a sliding plate 5 is slidably connected to the inner side of the sliding groove. One side of the sliding plate 5 is rotatably connected to multiple groups of closing plates 6, and a movable rod 7 is rotatably connected to the center of the inner side of the closing plate 6. One end of the movable rod 7 extends to the outside of the closing plate 6 and is fixedly connected to the inner wall of the circulation tube body 1. Both ends of the closing plate 6 are embedded with a first sealing gasket 8. A limiting groove is provided on the inner wall of the sliding groove, and a limiting block 9 slidably connected to the limiting groove is installed at one end of the bottom of the sliding plate 5. The cross-sections of the positioning groove and the limit block 9 are both T-shaped, and a second sealing gasket is embedded in the top of the sliding plate 5. First, the temperature sensor 24 can be used to monitor the air temperature in the inner air inlet channel and the outer air inlet channel in real time, and transmit the temperature signal to the controller. When the temperature in the inner air inlet channel is higher than the set summer temperature threshold, the two groups of first motors 3 can be started to rotate in different directions, so that the closing plate 6 at the center of one side is deflected. During deflection, the limiting block 9 and the limiting groove can cooperate to drive the sliding plate 5 to move smoothly, so that the closing plates 6 on the other two sides rotate together, so that the first sealing gasket 8 on the closing plate 6 contacts the inner wall of the circulation tube body 1 and the outer wall of the partition 4, thereby blocking the outer air inlet channel, and the closing plate 6 on the other side is the opposite, keeping it in a vertical state to open the inner air inlet channel; when the temperature in the outer air inlet channel is higher than the set winter temperature threshold, the two groups of first motors 3 can be started again to rotate, so that the closing plate 6 on one side is deflected to block the inner air inlet channel, and the closing plate 6 on the other side is deflected to open the outer air inlet channel.

[0031] In this embodiment, if Figure 1 、 Figure 2 and Figure 3As shown, the other end of the flow tube body 1 is connected to the filter frame 10 through a connecting mechanism, the inner wall of the filter frame 10 is embedded with a filter screen 11, and both sides of the filter frame 10 are embedded with a third sealing gasket 12. A docking tube 13 is installed on one side of the outer wall of the filter frame 10. A pressing plate 14 is slidably connected to the inner wall of the docking tube 13. A pressing groove is provided on one side of the pressing plate 14. A connecting rod is installed on the other end of the pressing plate 14. A synchronous groove is provided on one side of the inner wall of the docking tube 13. A synchronous block 20 is slidably connected to the inner side of the synchronous groove. The cross-sections of the synchronous block 20 and the synchronous groove are uniform. It is T-shaped, and a first spring 15 is installed between the inner wall of the synchronization groove and the outer wall of the synchronization block 20. A card slot is provided on one side of the outer wall of the circulation tube body 1, and a card plate 16 is installed on the other end of the connecting rod to be slidably connected to the card slot. A telescopic slot is provided on one side of the inner wall of the card slot, and a telescopic plate 17 is slidably connected to the inner wall of the telescopic slot. The cross-sections of the telescopic plate 17 and the telescopic slot are both T-shaped. A second spring is installed between the two ends of one side of the telescopic plate 17 and the inner wall of the telescopic slot. An arc-shaped support plate 18 is installed on the other end of the telescopic plate 17, and an elastic pad 19 is installed on the other side of the arc-shaped support plate 18. 19 is made of rubber. One end of the card plate 16 is provided with an arc-shaped groove that fits with the elastic pad 19. The cross section of the card plate 16 is L-shaped. Then, the filter frame 10 is aligned with the placement groove and pushed in, so that the filter screen 11 is inserted into the inner side of the flow tube body 1. At the same time, one end of the docking sleeve 13 is fitted with the outer wall of the flow tube body 1, so that the card plate 16 is inserted into the card groove. At this time, the pressing plate 14 is pressed and the connecting rod is used to continue to push the card plate 16 to move. The inclined surfaces 22 on the card plate 16 and the deflection plate 21 contact each other, forcing the deflection plate 21 to drive the rotating rod and the torsion spring to retract. The other end of the card plate 16 It will also contact the elastic pad 19 and the arc-shaped support plate 18. At the same time, the telescopic plate 17 slides inside the telescopic groove and drives the second spring to stretch. After the protruding end of the card plate 16 is staggered with the deflection plate 21 and a certain space is left, the torsion spring can drive the deflection plate 21 to pop out. At this time, the pressing plate 14 can be loosened back so that the protruding end of the card plate 16 moves back and its protruding end abuts against the outer wall of the deflection plate 21, completing the assembly of the filter frame 10 and the filter screen 11. The filter screen 11 can be used to filter the air entering from the outside to prevent dust, impurities, etc. from entering the fan 31 and the boiler system.

[0032] In this embodiment, if Figure 4 and Figure 5As shown, a deflection groove is provided on one side of the card slot inside the circulation tube body 1, and a rotating rod is rotatably connected to the inner side of the deflection groove. A deflection plate 21 is fixedly sleeved on one end of the outer wall of the rotating rod. Opposite ends of the deflection plate 21 and the card plate 16 are provided with opposite inclined surfaces 22. A torsion spring is installed between the rotating rod and the inner wall of the deflection groove. A torsion groove is provided on one side of the outer wall of the circulation tube body 1. A dial plate 23 is installed on the end of the rotating rod extending to the inner side of the torsion groove. A placement groove extending to the inner side is provided on the outer wall of the circulation tube body 1 on one side of the torsion groove. The filter frame 10 is slidably connected to the placement groove. A temperature sensor 24 is embedded and installed on the outer wall of the circulation tube body 1 between the placement groove and the torsion groove. The detection end of the temperature sensor 24 extends to the inside of the circulation tube body 1. Furthermore, when the filter frame 10 needs to be removed for cleaning and maintenance, the pressing plate 14 can be pushed again to make the synchronization block 20 squeeze the first spring 15 again to retract, and the connecting rod pushes the card plate 16 to squeeze the elastic pad 19 again to deform, and the arc-shaped support plate 18 squeezes the telescopic plate 17 to stretch the two sets of second springs inside the telescopic groove. At this time, the dial plate 23 on the inside of the torsion groove can be buckled to drive the rotating rod to rotate, so that the torsion spring retracts again, and the deflection plate 21 is actively retracted into the inside of the deflection groove. Then the docking tube 13, the filter frame 10 and the filter screen 11 can be pulled out for inspection and maintenance by the staff.

[0033] In this embodiment, if Figure 6 、 Figure 7 and Figure 8 As shown, a top groove is provided at the top of the circulation tube body 1, and a top cover 25 is slidably connected to the inside of the top groove. A fourth sealing gasket 26 is embedded in the outer wall of the top cover 25, and the outer wall of the fourth sealing gasket 26 fits with the inner wall of the top groove. An adjusting column 27 is installed at one end of the top of the circulation tube body 1, and an adjusting groove is provided on one side of the adjusting column 27. A threaded rod 28 is rotatably connected to the inside of the adjusting groove, and an adjusting plate 29 is threadedly connected to the outer side of the threaded rod 28. One end of the adjusting plate 29 is fixedly connected to one side of the top cover 25, and a second motor 30 is installed on the top of the adjusting column 27. The driving end of the second motor 30 extends to the adjusting The inner side of the section groove is fixedly connected to one end of the threaded rod 28, and fans 31 are installed at the ports of the inner air inlet channel and the outer air inlet channel. Furthermore, starting the second motor 30 can drive the threaded rod 28 to rotate, allowing the adjustment plate 29 to move along the adjustment groove, so that the adjustment plate 29 drives the top cover 25 to rise so that the staff can inspect and maintain the linkage switching mechanism inside the circulation pipe body 1. After the maintenance is completed, the second motor 30 can be started again for reverse rotation, so that the top cover 25 is close to the circulation pipe body 1 again, so that the fourth sealing gasket 26 is fitted with the inner side of the top groove to ensure the sealing during fitting.

[0034] Implementation plan: The temperature sensor 24 can be used to monitor the air temperature in the inner air inlet channel and the outer air inlet channel in real time, and transmit the temperature signal to the controller. When the temperature in the inner air inlet channel is higher than the set summer temperature threshold, the two groups of first motors 3 can be started to rotate in different directions, so that the closing plate 6 at the center of one side is deflected. When deflected, it can cooperate with the limit block 9 and the limit groove to drive the sliding plate 5 to move smoothly, so that the closing plates 6 on the other two sides rotate together, so that the first sealing gasket 8 on the closing plate 6 contacts the inner wall of the circulation pipe body 1 and the outer wall of the partition 4, thereby blocking the outer air inlet channel. On the contrary, the closing plate 6 on the other side is kept in a vertical state to open the inner air inlet channel. When the temperature in the outer air inlet channel is higher than the set winter temperature threshold, When the temperature threshold is reached, the two groups of first motors 3 can be started again to rotate, so that the closing plate 6 on one side is deflected to block the inner air inlet channel, and the closing plate 6 on the other side is deflected to open the outer air inlet channel, and the filter frame 10 is pushed into the placement slot to allow the filter screen 11 to penetrate into the inner side of the circulation pipe body 1. At the same time, one end of the docking tube 13 is in contact with the outer wall of the circulation pipe body 1, so that the card plate 16 penetrates into the card slot. At this time, press the pressing plate 14 and cooperate with the connecting rod to continue pushing the card plate 16 to move. The inclined surfaces 22 on the card plate 16 and the deflection plate 21 contact each other, forcing the deflection plate 21 to drive the rotating rod and the torsion spring to retract. The other end of the card plate 16 will also contact the elastic pad 19 and the arc support plate 18. At the same time, the telescopic plate 17 slides inside the telescopic slot and drives the second spring to pull The filter screen 11 can be used to filter the air entering from the outside to prevent dust, impurities, etc. from entering the fan 31 and the boiler system. When the filter frame 10 needs to be removed for cleaning and maintenance, the pressing plate 14 can be pushed again, so that the synchronous block 20 squeezes the first spring 15 again to retract, and the connecting rod pushes the card plate 16 to squeeze the elastic pad 19 again to deform, and the arc support plate 18 squeezes the telescopic plate 17 to stretch inside the telescopic groove. The two groups of second springs are stretched. At this time, the dial plate 23 on the inner side of the torsion groove can be buckled to drive the rotating rod to rotate, so that the torsion spring retracts again, and the deflection plate 21 is actively retracted into the inner side of the deflection groove. Then the docking tube 13, the filter frame 10 and the filter screen 11 can be pulled out for the staff to inspect and maintain. Starting the second motor 30 can drive the threaded rod 28 to rotate, and the adjustment plate 29 can be moved along the adjustment groove, so that the adjustment plate 29 drives the top cover 25 to rise so that the staff can inspect and maintain the linkage switching mechanism inside the circulation pipe body 1. After the maintenance is completed, the second motor 30 can be started again for reverse rotation, so that the top cover 25 is close to the circulation pipe body 1 again, so that the fourth sealing gasket 26 is in contact with the inner side of the top groove to ensure the sealing when fitting.

[0035] The control method of the present invention is controlled by a controller. The control circuit of the controller can be implemented by simple programming by technicians in this field. The provision of power is also common knowledge in this field. Moreover, the present invention is used to protect mechanical devices, so the control method and circuit connection are no longer explained in detail in the present invention.

[0036] Although preferred embodiments of the present invention have been described, further changes and modifications may be made to these embodiments by those skilled in the art once the basic inventive concepts are understood. It is apparent that various changes and modifications may be made to the present invention by those skilled in the art without departing from the spirit and scope of the present invention. Thus, the present invention is intended to encompass such changes and modifications as fall within the scope of equivalents of the present invention.

Claims

1. An internal and external air inlet device for an integrated boiler, characterized in that: include: The circulation pipe body has an inner air inlet channel and an outer air inlet channel formed therein, the inner air inlet channel and the outer air inlet channel being connected to each other on their inner sides, and a linkage switching mechanism being installed on one side of the inner wall of the inner air inlet channel and the outer air inlet channel inside the circulation pipe body, the linkage switching mechanism including a driving component and a closing component, the driving component being used to control the closing component to move, and the closing component being used to block or open the inner air inlet channel and the outer air inlet channel; The drive assembly includes a mounting groove installed at the center of the inner wall of the circulation tube body, a connecting frame is installed on the inner wall of the mounting groove, and a first motor is installed at both ends of the bottom of the connecting frame. The inner wall of the circulation tube body is located at the ports of the inner air inlet channel and the outer air inlet channel. A plurality of partitions are arranged and installed; The sealing component includes sliding grooves provided at both ends of the inner wall of the circulation tube body and at the bottom end of the partition, a sliding plate is slidably connected to the inner side of the sliding groove, and one side of the sliding plate is rotatably connected to multiple sets of sealing plates, a movable rod is rotatably connected to the center of the inner side of the sealing plate, one end of the movable rod extends to the outer side of the sealing plate and is fixedly connected to the inner wall of the circulation tube body, a first sealing gasket is embedded and installed at both ends of the sealing plate, a limiting groove is provided on the inner wall of the sliding groove, a limiting block slidably connected to the limiting groove is installed at one end of the bottom of the sliding plate, the cross-sections of the limiting groove and the limiting block are both T-shaped, and a second sealing gasket is embedded and installed on the top of the sliding plate; The other end of the circulation tube body is connected to the filter frame through a connecting mechanism, the inner wall of the filter frame is embedded with a filter screen, both sides of the filter frame are embedded with a third sealing gasket, one side of the outer wall of the filter frame is installed with a docking tube, the inner wall of the docking tube is slidably connected with a pressing plate, one side of the pressing plate is provided with a pressing groove, and the other end of the pressing plate is installed with a connecting rod.

2. The internal and external air inlet device for an integrated boiler according to claim 1, characterized in that: A synchronization groove is opened on one side of the inner wall of the docking sleeve, and a synchronization block is slidably connected to the inner side of the synchronization groove. The cross sections of the synchronization block and the synchronization groove are both T-shaped, and a first spring is installed between the inner wall of the synchronization groove and the outer wall of the synchronization block.

3. The internal and external air inlet device for an integrated boiler according to claim 2, characterized in that: A card slot is provided on one side of the outer wall of the circulation tube body, and a card plate slidably connected to the card slot is installed on the other end of the connecting rod. A telescopic slot is provided on one side of the inner wall of the card slot, and a telescopic plate is slidably connected to the inner wall of the telescopic slot. The cross-sections of the telescopic plate and the telescopic slot are both T-shaped, and a second spring is installed between the two ends of one side of the telescopic plate and the inner wall of the telescopic slot.

4. The internal and external air inlet device for an integrated boiler according to claim 3, characterized in that: An arc-shaped support plate is installed at the other end of the telescopic plate, and an elastic pad is installed on the other side of the arc-shaped support plate. The elastic pad is made of rubber. An arc-shaped groove is opened at one end of the card plate to fit the elastic pad, and the cross-section of the card plate is L-shaped.

5. The internal and external air inlet device for an integrated boiler according to claim 4, characterized in that: A deflection groove is provided on one side of the card slot inside the circulation tube body, and a rotating rod is rotatably connected to the inner side of the deflection groove. A deflection plate is fixedly sleeved on one end of the outer wall of the rotating rod, and opposite ends of the deflection plate and the card plate are provided with relative inclined surfaces. A torsion spring is installed between the rotating rod and the inner wall of the deflection groove. A torsion groove is provided on one side of the outer wall of the circulation tube body, and a paddle is installed on the end of the rotating rod extending to the inner side of the torsion groove. A placement groove extending to the inner side is provided on the outer wall of the circulation tube body on one side of the torsion groove, and the filter frame is slidably connected to the placement groove. A temperature sensor is embedded and installed on the outer wall of the circulation tube body between the placement groove and the torsion groove, and the detection end of the temperature sensor extends to the inner side of the circulation tube body.

6. The internal and external air inlet device for an integrated boiler according to claim 5, characterized in that: A top groove is provided at the top of the circulation pipe body, a top cover is slidably connected to the inner side of the top groove, a fourth sealing gasket is embedded in the outer wall of the top cover, and the outer wall of the fourth sealing gasket is in contact with the inner wall of the top groove.

7. The internal and external air inlet device for an integrated boiler according to claim 6, characterized in that: An adjusting column is installed at one end of the top of the circulation tube body, and an adjusting slot is opened on one side of the adjusting column. A threaded rod is rotatably connected to the inner side of the adjusting slot, and an adjusting plate is threadedly connected to the outer side of the threaded rod. One end of the adjusting plate is fixedly connected to one side of the top cover, and a second motor is installed on the top of the adjusting column. The driving end of the second motor extends to the inner side of the adjusting slot and is fixedly connected to one end of the threaded rod. Fans are installed at the ports of the inner air inlet channel and the outer air inlet channel.

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