A rotary disc continuous rotary valve device

Abstract

The present application relates to the technical fields of rotary gas exchange valve, in particular to a rotary disc type continuous rotary valve device, which comprises a gas distribution box, an elastic sealing assembly and an auxiliary air guide assembly, the gas distribution box comprises a middle air inlet box and two side air outlet pipes, each side air outlet pipe is provided with an air outlet, and each side air outlet pipe is provided with an air passage round cover at the position communicated with the middle air inlet box, the elastic sealing assembly comprises an elastic diaphragm and a first driving mechanism, the elastic diaphragm divides the inner cavity of the middle air inlet box into two cavities symmetrically, and the auxiliary air guide assembly comprises a rotary baffle and a second driving mechanism, the valve plate of the device for switching the air flow channel is the elastic diaphragm, the elastic diaphragm has a fast elastic action, and the elastic diaphragm can seal the corresponding air passage round cover in an instant, so that the switching speed of the device when switching the air outlet direction is improved, and the efficiency of releasing waste gas is improved.

Description

Technical Field

[0001] This invention relates to the field of rotary ventilation valve technology, specifically to a rotary continuous rotary valve device. Background Technology

[0002] Regenerative Thermal Oxidizers (RTOs) are used to treat low- to medium-concentration organic waste gases. Their principle is to oxidize flammable waste gases at high temperatures into matching metal oxides and water, thereby cleaning the waste gas and recovering the heat released during the decomposition process. The decomposition efficiency can reach over 99%, with direct expansion RTOs achieving over 95%. The main components of an RTO include a combustion chamber, a ceramic packing bed, and a switching valve.

[0003] Because RTO systems utilize pneumatic actuators to open and close valves during operation, valves typically need to be switched every 60-180 seconds. Therefore, not only is a fast switching speed required, but the valve plate and valve shaft must also be resistant to deformation, have good sealing performance, and a long service life. This is essential for improving the processing efficiency of the RTO system.

[0004] The existing Chinese patent with publication number CN104976379B discloses a rotary three-way air exchange valve, which solves the problems of slow valve switching speed and valve plate deformation mentioned above. However, this patent still has the following defects:

[0005] Firstly, the valve plate in the aforementioned patent switches by rotation. Although the switching speed is increased to a certain extent under high air pressure, the valve plate itself is heavy. Therefore, when rotating, the air pressure is too high, which requires a larger torque to drive the valve plate. High torque drive equipment is expensive, bulky, and inconvenient to install.

[0006] Secondly, the valve plate and cover plate in the aforementioned patent improve the sealing performance through negative pressure adsorption. Under the action of negative pressure and exhaust gas pressure, the cover plate will be tightly attached to the valve plate, making it difficult to drive rotation. Therefore, the principle of channel switching is contradictory.

[0007] Therefore, it is necessary to provide a rotary continuous rotary valve device to solve the above problems. Summary of the Invention

[0008] Therefore, it is necessary to provide a rotary continuous rotary valve device to address the problems of the existing technology.

[0009] To solve the problems of the prior art, the technical solution adopted by the present invention is as follows: a rotary continuous rotary valve device, including a gas distribution box, an elastic sealing assembly, and an auxiliary air intake assembly. The gas distribution box includes a central air intake box and two side exhaust pipes respectively located on both sides of the central air intake box. The upper end of the central air intake box is a funnel-shaped opening structure for allowing exhaust gas to flow in. Each side exhaust pipe is connected to the lower end of the central air intake box and has an exhaust port. A vent is provided at the connection point between each side exhaust pipe and the central air intake box to allow exhaust gas to flow into the side exhaust pipe. The elastic sealing assembly is located inside the central air intake box and includes an elastic diaphragm and a primary drive mechanism. The elastic diaphragm is circular and located between the two vents. The membrane divides the inner cavity of the central air intake box into two symmetrical chambers. The first drive mechanism is used to squeeze the center of the elastic diaphragm, so that the elastic diaphragm can spring onto the ventilation hood on either side. The elastic diaphragm tightly covers the corresponding ventilation hood, so that the corresponding side exhaust pipe is blocked, thereby controlling the exhaust direction of the exhaust gas. The auxiliary air intake assembly is located at the upper end of the central air intake box. The auxiliary air intake assembly includes a rotating baffle and a second drive mechanism. The rotating baffle is located between the two chambers. The second drive mechanism is used to drive the rotating baffle to rotate toward the side where the elastic diaphragm springs, so that the exhaust gas about to flow into one of the chambers is blocked by the rotating baffle in advance. At the same time, the tilted rotating baffle guides the exhaust gas into the other chamber.

[0010] Furthermore, the central air intake box is rectangular, each side exhaust pipe is a cylindrical pipe, one end of each side exhaust pipe is connected to the side wall of the corresponding side of the central air intake box, each ventilation hood is coaxially fixed inside the end of the corresponding side exhaust pipe near the central air intake pipe, each ventilation hood is recessed into the corresponding side exhaust pipe, the two ventilation hoods are coaxial, and each ventilation hood has several strip-shaped ventilation slots evenly distributed along the circumference of the ventilation hood.

[0011] Furthermore, a vertical mounting plate is fixed inside the central air intake box and located between the two ventilation hoods. The axis of each ventilation hood is perpendicular to the side wall of the mounting plate. A circular through hole coaxial with the two ventilation hoods is opened in the middle of the mounting plate. A circular groove is formed on the mounting plate around the circular through hole. A rigid ring is provided around the outer edge of the elastic diaphragm and is locked in the circular groove, so that the elastic diaphragm is fixed and coaxial with each ventilation hood.

[0012] Furthermore, the first drive mechanism includes a drive shaft and an internal threaded sleeve. A rigid cylindrical sleeve is coaxially formed at the center of the elastic diaphragm. The internal threaded sleeve is coaxially fixed inside the rigid cylindrical sleeve. The drive shaft passes horizontally through the center of the elastic diaphragm. The drive shaft includes a central smooth shaft and two threaded shafts that are coaxially fixed to both ends of the central smooth shaft. Each threaded shaft passes horizontally through the corresponding vent hood. Each threaded shaft can be threadedly engaged with the internal threaded sleeve. One end of each threaded shaft is coaxially formed with a rotating shaft that is rotatably connected to the corresponding vent hood. One of the rotating shafts passes through the corresponding side exhaust pipe.

[0013] Furthermore, each ventilation hood has a perforation at its center, and each ventilation hood has a horizontal tube on its outward protruding side, with one end connected to the perforation. The other end of the tube is tightly fitted to the inner wall of the corresponding exhaust pipe. A bearing is fixedly embedded in the end of the tube. One end of each rotating shaft passes horizontally through the perforation and is coaxially fixed to the inner ring of the corresponding bearing.

[0014] Furthermore, the horn-shaped opening structure at the upper end of the central air intake box is composed of two inclined plates and two vertical plates connected together. The rotating baffle is strip-shaped and spans between the two vertical plates. One end of the rotating baffle in the long direction is hinged between the two vertical plates. Each vertical plate has two symmetrical inclined baffles formed on it. The two short sides of the rotating baffle can abut against the two corresponding inclined baffles respectively.

[0015] Furthermore, a guide pin with an axis perpendicular to the vertical plate is formed on both sides of the other end of the rotating baffle along the longitudinal direction. An arc-shaped guide groove is formed on each vertical plate. The guide pin passes horizontally through the arc-shaped guide groove and can slide within the corresponding arc-shaped guide groove. A sealing ring for dynamically sealing the arc-shaped guide groove is provided on the outer wall of each vertical plate. The sealing ring is coaxial with the hinge end of the rotating baffle. The guide pin passes through the sealing ring and is fixedly connected to the sealing ring. The second drive mechanism includes two external turntables respectively located on the sides of the two sealing rings. Each external turntable is coaxial with the sealing ring. Two abutments are formed on the peripheral wall of the external turntable, which are spaced apart along the circumference of the external turntable. Each guide pin is located between the two abutments, and each abutment can abut against the guide pin after the external turntable rotates.

[0016] Furthermore, each vertical plate has an annular groove formed on its outer wall, which is coaxial with the hinge end of the corresponding rotating baffle. Each sealing ring is embedded in the corresponding annular groove, and the inner and outer walls of each sealing ring are respectively in contact with the inner and outer walls of the annular groove.

[0017] The beneficial effects of this invention compared to the prior art are:

[0018] Firstly, the valve plate used to switch the airflow channel in this device is an elastic diaphragm. The elastic diaphragm bounces quickly and can block the corresponding ventilation hood in an instant, thereby improving the switching speed of this device when switching the exhaust direction and thus improving the efficiency of releasing exhaust gas.

[0019] Secondly, the rotating baffle in this device effectively prevents the elastic diaphragm from deforming due to strong air pressure on the side that bulges out due to the bounce, thus further improving the service life of the elastic diaphragm. At the same time, the tilted rotating baffle can also guide the blocked exhaust gas to the other side of the cavity, improving the exhaust gas discharge efficiency.

[0020] Thirdly, the elastic diaphragm is made of elastic material, which can better fit tightly with the ventilation hood, resulting in a strong sealing effect and improving the airtightness of the device. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural diagram of an embodiment;

[0022] Figure 2 yes Figure 1 A magnified view of the area indicated by A1 in the diagram;

[0023] Figure 3 This is a top view of an embodiment;

[0024] Figure 4 yes Figure 3 Sectional view along line AA;

[0025] Figure 5 yes Figure 4 The enlarged view of the area indicated by A2 in the diagram;

[0026] Figure 6 yes Figure 4 The enlarged view of the area indicated in A3;

[0027] Figure 7 yes Figure 3 Sectional view along line BB;

[0028] Figure 8 yes Figure 7 The enlarged view shown in section A4;

[0029] Figure 9 This is an exploded three-dimensional view of the ventilation hood and side exhaust pipe of the embodiment;

[0030] Figure 10 This is an exploded three-dimensional view of the elastic diaphragm and mounting plate in an embodiment.

[0031] The following are labeled in the diagram: 1. Air distribution box; 2. Central air intake box; 3. Side exhaust pipe; 4. Exhaust port; 5. Ventilation hood; 6. Elastic diaphragm; 7. Cavity; 8. Rotating baffle; 9. Strip-shaped ventilation groove; 10. Mounting plate; 11. Circular through hole; 12. Circular groove; 13. Hard ring; 14. Drive shaft; 15. Internal threaded sleeve; 16. Hard cylindrical sleeve; 17. Central smooth shaft; 18. Threaded shaft; 19. Rotating shaft; 20. Perforation; 21. Circular tube; 22. Bearing; 23. Inclined plate; 24. Vertical plate; 25. Inclined stop bar; 26. Guide pin; 27. Arc-shaped guide groove; 28. Sealing ring; 29. ​​External turntable; 30. Abutment block; 31. Annular groove. Detailed Implementation

[0032] To further understand the features, technical means, and specific objectives and functions achieved by the present invention, the present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments.

[0033] refer to Figures 1 to 10 The rotary valve device shown includes a distribution box 1, an elastic sealing assembly, and an auxiliary air intake assembly. The distribution box 1 includes a central air intake box 2 and two side exhaust pipes 3 respectively located on both sides of the central air intake box 2. The upper end of the central air intake box 2 is a funnel-shaped opening structure for allowing exhaust gas to flow in. Each side exhaust pipe 3 is connected to the lower end of the central air intake box 2 and has an exhaust port 4. Each side exhaust pipe 3 has a ventilation hood 5 at the connection point between it and the central air intake box 2 to allow exhaust gas to flow into the side exhaust pipe 3. The elastic sealing assembly is located inside the central air intake box 2 and includes an elastic diaphragm 6 and a primary drive mechanism. The elastic diaphragm 6 is circular and located between the two ventilation hoods 5, and the elastic diaphragm 6 seals the central air intake box 2. The inner cavity is divided into two symmetrical chambers 7. The first drive mechanism is used to squeeze the center of the elastic diaphragm 6, so that the elastic diaphragm 6 can bounce onto the ventilation hood 5 on either side. The elastic diaphragm 6 tightly covers the corresponding ventilation hood 5, so that the corresponding side exhaust pipe 3 is blocked, thereby controlling the exhaust direction of the exhaust gas. The auxiliary air intake assembly is located at the upper end of the middle air intake box 2. The auxiliary air intake assembly includes a rotating baffle 8 and a second drive mechanism. The rotating baffle 8 is located between the two chambers 7. The second drive mechanism is used to drive the rotating baffle 8 to rotate toward the side where the elastic diaphragm 6 bounces, so that the exhaust gas about to flow into one of the chambers 7 is blocked by the rotating baffle 8 in advance. At the same time, the tilted rotating baffle 8 guides the exhaust gas into the other chamber 7.

[0034] This device can change the exhaust direction of the exhaust gas during the continuous injection of exhaust gas into the central intake box 2, so that the exhaust gas can be discharged from one side exhaust box or the other side exhaust box. In other words, one side exhaust box is in an open state while the other side exhaust box needs to be in a blocked state.

[0035] like Figure 4 As shown, when exhaust gas needs to be discharged through the left-side exhaust box, the right-side exhaust box needs to be sealed. At this time, the second drive mechanism first drives the rotating baffle 8 to rotate towards the right-side exhaust box. Ultimately, the rotating baffle 8 seals the air intake end of the right-side cavity 7. A large amount of exhaust gas about to flow into the right-side cavity 7 is blocked in advance, and only a small amount of exhaust gas will enter the right-side cavity 7. Furthermore, the tilted rotating baffle 8 will also guide the exhaust gas towards the left-side cavity 7. After the rotating baffle 8 rotates, the first drive mechanism squeezes the center of the elastic diaphragm 6, causing the elastic diaphragm 6 to spring towards the right-side vent shroud 5. By tightly covering the right ventilation hood 5 with the elastic diaphragm 6, the small amount of exhaust gas entering the right cavity 7 will eventually be blocked by the elastic diaphragm 6. The exhaust gas cannot enter the right side exhaust box through the right ventilation hood 5, thus making the right side exhaust box blocked. At this time, the exhaust gas continuously entering the middle air intake box 2 can only be discharged through the left side exhaust box. Conversely, when exhaust gas needs to be discharged through the right side exhaust box, the second drive mechanism drives the rotating baffle 8 to rotate towards the left side exhaust box, and then the first drive mechanism squeezes the elastic diaphragm 6, causing the elastic diaphragm 6 to spring onto the left ventilation hood 5.

[0036] The elastic diaphragm 6 has a fast spring action, and the elastic diaphragm 6 can block the corresponding ventilation hood 5 in an instant, thereby improving the switching speed of the device when switching the exhaust direction, and thus improving the efficiency of releasing exhaust gas.

[0037] The rotating baffle 8 is used to reduce the air pressure on the elastic diaphragm 6. The rotating baffle 8 can rotate towards the side of the elastic diaphragm 6 that bounces through the second drive mechanism. Thus, the exhaust gas that is vertically discharged towards the elastic diaphragm 6 will be blocked by the rotating baffle 8. After the elastic diaphragm 6 has bounced to one side, the blocking by the rotating baffle 8 effectively prevents the side of the elastic diaphragm 6 that is bulging out due to strong air pressure, thereby further improving the service life of the elastic diaphragm 6. At the same time, the rotating baffle 8, which is in an inclined state, can also guide the blocked exhaust gas into the cavity 7 on the other side, thereby improving the exhaust gas discharge efficiency.

[0038] To demonstrate the specific shape and structure of the side exhaust pipe 3 and the central air intake box 2, the following features are provided:

[0039] The central air intake box 2 is rectangular, and each side exhaust pipe 3 is a cylindrical pipe. One end of each side exhaust pipe 3 is connected to the side wall of the corresponding side of the central air intake box 2. Each ventilation hood 5 is coaxially fixed inside the end of the corresponding side exhaust pipe 3 near the central air intake pipe. Each ventilation hood 5 is recessed into the corresponding side exhaust pipe 3. The two ventilation hoods 5 are coaxial, and each ventilation hood 5 has several strip-shaped ventilation slots 9 evenly distributed along the circumference of the ventilation hood 5.

[0040] Before installing the side exhaust pipe 3, first fix the ventilation hood 5 inside one end of the side exhaust pipe 3, and then connect the end of the side exhaust pipe 3 containing the ventilation hood 5 to one side of the central air intake box 2. Each ventilation hood 5 allows gas to flow in through several strip ventilation slots 9. When the elastic diaphragm 6 bounces to one side, the elastic diaphragm 6 will bulge out and fit tightly against the corresponding ventilation hood 5, thereby sealing the several strip ventilation slots 9 on the corresponding ventilation hood 5 through the elastic diaphragm 6.

[0041] To demonstrate the specific installation method of the elastic diaphragm 6, the following features are provided:

[0042] A vertical mounting plate 10 is fixed inside the central air intake box 2 and located between two ventilation hoods 5. The axis of each ventilation hood 5 is perpendicular to the side wall of the mounting plate 10. A circular through hole 11 coaxial with the two ventilation hoods 5 is opened in the middle of the mounting plate 10. A circular groove 12 is formed on the mounting plate 10 around the circular through hole 11. A rigid ring 13 is provided on the outer edge of the elastic diaphragm 6. The rigid ring 13 is locked in the circular groove 12, so that the elastic diaphragm 6 is fixed and coaxial with each ventilation hood 5.

[0043] The elastic diaphragm 6 is fixed in the middle air intake box 2 by the mounting plate 10. After the elastic diaphragm 6 is fixed, the elastic diaphragm 6 is coaxial with the two ventilation hoods 5. When the elastic diaphragm 6 bounces left and right, the elastic diaphragm 6 will bulge out and cover the inwardly recessed ventilation hoods 5.

[0044] To demonstrate the specific structure of the No. 1 drive mechanism, the following features were set:

[0045] The first drive mechanism includes a drive shaft 14 and an internal threaded sleeve 15. A rigid cylindrical sleeve 16 is coaxially formed at the center of the elastic diaphragm 6. The internal threaded sleeve 15 is coaxially fixed inside the rigid cylindrical sleeve 16. The drive shaft 14 passes horizontally through the center of the elastic diaphragm 6. The drive shaft 14 includes a central smooth shaft 17 and two threaded shafts 18 that are coaxially fixed to both ends of the central smooth shaft 17. Each threaded shaft 18 passes horizontally through the corresponding vent shroud 5. Each threaded shaft 18 can be threadedly engaged with the internal threaded sleeve 15. One end of each threaded shaft 18 is coaxially formed with a rotating shaft 19 that is rotatably connected to the corresponding vent shroud 5. One of the rotating shafts 19 passes through the corresponding side exhaust pipe 3.

[0046] The rotating shaft 19, which extends out of the side exhaust pipe 3, is connected to an external drive source (not shown in the figure). When the external drive source drives the drive shaft 14 to rotate, the internal threaded sleeve 15, which is threadedly engaged with one of the threaded shafts 18, will move axially along the drive shaft 14 as the threaded shaft 18 rotates. Therefore, the combined... Figure 4 and Figure 5 As shown, when the internal threaded sleeve 15 slides to the left, the internal threaded sleeve 15 will drive the rigid cylindrical sleeve 16 to move to the left. In this way, the rigid cylindrical sleeve 16 will press the center of the elastic diaphragm 6 to the left until the internal threaded sleeve 15 disengages from the right threaded shaft 18. At this time, the elastic diaphragm 6 will bounce to the left due to elasticity. During this process, the internal threaded sleeve 15, which is disengaged from the threaded shaft 18, will slide towards the left threaded shaft 18 on the middle smooth shaft 17. When the internal threaded sleeve 15 slides to contact the left threaded shaft 18, since the drive shaft 14 is still rotating at this time, the internal threaded sleeve 15 will eventually be fitted onto the left threaded shaft 18 through the threaded engagement with the threaded shaft 18 until the elastic diaphragm 6 is completely attached to the corresponding ventilation hood 5. At this time, the first external drive source stops working.

[0047] The first peripheral drive source can be a stepper motor, which controls the number of rotations of the rotating shaft 19. Since the elastic diaphragm 6 is elastic except for its center and outer edge, if the rotating shaft 19 rotates too many times during the process of the elastic diaphragm 6 adhering to the ventilation hood 5, the rigid cylindrical sleeve 16 will still drive the inner threaded sleeve 15 to move axially toward the corresponding ventilation hood 5 after the elastic diaphragm 6 has already adhered to the ventilation hood 5. At this time, the elastic diaphragm 6 can still adapt to the current interference compression force through its elasticity.

[0048] To demonstrate how each rotating shaft 19 is rotatably connected to the corresponding ventilated hood 5, the following features are specifically designed:

[0049] Each ventilation hood 5 has a perforation 20 at its center. Each ventilation hood 5 has a horizontally shaped tube 21 on its outward protruding side, with one end connected to the perforation 20. The other end of the tube 21 is tightly fitted to the inner wall of the corresponding exhaust pipe 3. A bearing 22 is fixedly embedded in the end of the tube 21. One end of each rotating shaft 19 passes horizontally through the perforation 20 and is coaxially fixed to the inner ring of the corresponding bearing 22.

[0050] The rotating shaft 19 rotates through the corresponding bearing 22. After the ventilation hood 5 is installed, the gap between the round pipe 21 and the inner wall of the side exhaust pipe 3 is sealed by the sealing ring (not shown in the figure). This ensures that one end of the round pipe 21 is precisely fitted to the inner wall of the side exhaust pipe 3. So when the exhaust gas flows into the side exhaust pipe 3 through the ventilation hood 5, the exhaust gas will not flow into the round pipe 21 through the gap between the round pipe 21 and the side exhaust pipe 3, ensuring that the exhaust gas has only one outlet channel, the exhaust port 4.

[0051] To demonstrate the specific installation position of the rotating baffle 8 and the rotation limit of the rotating baffle 8, the following features are specifically designed:

[0052] The horn-shaped opening structure at the upper end of the central air intake box 2 is formed by connecting two inclined plates 23 and two vertical plates 24. The rotating baffle 8 is strip-shaped and spans between the two vertical plates 24. One end of the rotating baffle 8 in the long direction is hinged between the two vertical plates 24. Each vertical plate 24 has two symmetrical inclined baffles 25 formed on it. The two short sides of the rotating baffle 8 can abut against the two corresponding inclined baffles 25 respectively.

[0053] The rotating baffle 8 achieves its rotation through a hinge at one end. When the rotating baffle 8 is driven to rotate to one side by the second drive mechanism, the two short sides of the rotating baffle 8 will eventually abut against the two corresponding inclined baffles 25, thereby limiting the rotation of the baffle 8. At this time, the rotating baffle 8 will be in an inclined state, thereby blocking the large amount of exhaust gas flowing into the corresponding cavity 7 while directing the exhaust gas to another cavity 7.

[0054] To demonstrate the specific structure of the No. 2 drive mechanism, the following features were set:

[0055] Both sides of the other end of the rotating baffle 8 along its longitudinal direction are formed with guide pins 26 whose axes are perpendicular to the vertical plates 24. Each vertical plate 24 has an arc-shaped guide groove 27. The guide pins 26 pass horizontally through the arc-shaped guide grooves 27 and can slide within the corresponding arc-shaped guide grooves 27. Each vertical plate 24 has a sealing ring 28 on its outer wall for dynamically sealing the arc-shaped guide grooves 27. The sealing rings 28 are coaxial with the hinge end of the rotating baffle 8. 26 passes through and is fixedly connected to the sealing ring 28. The second drive mechanism includes two external turntables 29 respectively located on the sides of the two sealing rings 28. Each external turntable 29 is coaxial with the sealing ring 28. Two abutment blocks 30 are formed on the peripheral wall of the external turntable 29 and are spaced apart along the circumference of the external turntable 29. Each guide pin 26 is located between the two abutment blocks 30, and each abutment block 30 can abut against the guide pin 26 after the external turntable 29 rotates.

[0056] Combination Figure 1 , Figure 2 and Figure 4 As shown, the exhaust gas flows vertically downward into the central air intake box 2. At this time, the rotating baffle 8 will be continuously subjected to a downward air pressure. If the rotating baffle 8 is rotated by driving its hinge end, then driving the rotating baffle 8 to rotate requires a large torque. Furthermore, if the drive source driving the rotating baffle 8 is directly connected to the rotating baffle 8, then when the rotating baffle 8 rotates to the side and shifts to one side, a large wind force will cause the rotating baffle 8 to rotate downward instantly. If the drive source cannot keep up with the rotation speed of the rotating baffle 8 at this time, the connection between the drive source and the rotating baffle 8 will be damaged. Therefore, the second drive mechanism of this device drives the rotating baffle 8 to rotate by driving the guide pin 26 located away from the hinge end of the rotating baffle 8, thereby relatively reducing the torque required to drive the rotating baffle 8 to rotate.

[0057] When the two external turntables 29 rotate synchronously, one of the abutments 30 will follow the rotation of the external turntable 29 and then abut against the guide pin 26. Then, the abutment 30 will drive the guide pin 26 to slide in the arc-shaped guide groove 27. At this time, the rotating baffle 8 is in a rotating state. When the rotating baffle 8 rotates from one side to vertical, the external turntable 29 will also drive the abutment 30 to rotate at a certain angle. Then, the external turntable 29 stops rotating. At this time, the rotating baffle 8 will shift from the vertical state to the other side at a certain angle. Once the rotating baffle 8 shifts from the vertical state at a certain angle, the downward air pressure will instantly act on the plate surface of the rotating baffle 8. Then, the rotating baffle 8 will be pressed down by the wind until the two short sides of the rotating baffle 8 abut against the corresponding two inclined baffles 25 respectively.

[0058] Both external turntables 29 are driven by a second external drive source (not shown in the figure), which can also be a stepper motor;

[0059] While the guide pin 26 rotates within the arc-shaped guide groove 27, the guide pin 26 will drive the sealing ring 28 to rotate, thereby achieving dynamic sealing of the arc-shaped guide groove 27 through the sealing ring 28, preventing exhaust gas from being discharged outside the central air intake box 2 through the arc-shaped guide groove 27.

[0060] To improve the airtightness of the sealing ring 28 during rotation, the following features are specifically designed:

[0061] Each vertical plate 24 has an annular groove 31 formed on its outer wall, which is coaxial with the hinge end of the corresponding rotating baffle 8. Each sealing ring 28 is embedded in the corresponding annular groove 31, and the inner and outer walls of each sealing ring 28 are respectively in contact with the inner and outer walls of the annular groove 31.

[0062] When the guide pin 26 slides in the arc-shaped guide groove 27, the guide pin 26 will drive the sealing ring 28 to slide in the annular groove 31. The sealing effect of the sealing ring 28 is increased by the annular groove 31. Furthermore, a dynamic sealing ring (not shown in the figure) can be added to the inner and outer rings of the sealing ring 28 to further enhance the sealing effect of the sealing ring 28.

[0063] Working principle:

[0064] When exhaust gas needs to be discharged through the left-side exhaust box, the right-side exhaust box needs to be sealed. At this time, the second drive mechanism first drives the rotating baffle 8 to rotate towards the right-side exhaust box. Ultimately, the rotating baffle 8 seals the air intake end of the right-side cavity 7. A large amount of exhaust gas about to flow into the right-side cavity 7 is blocked in advance, and only a small amount of exhaust gas will enter the right-side cavity 7. Furthermore, the tilted rotating baffle 8 will also guide the exhaust gas towards the left-side cavity 7. After the rotating baffle 8 rotates, the first drive mechanism squeezes the center of the elastic diaphragm 6, causing the elastic diaphragm 6 to spring towards the right-side vent shroud 5, and through… The elastic diaphragm 6 tightly covers the right ventilation hood 5, so the small amount of exhaust gas entering the right cavity 7 will eventually be blocked by the elastic diaphragm 6. The exhaust gas cannot enter the right side exhaust box through the right ventilation hood 5, thus making the right side exhaust box blocked. At this time, the exhaust gas continuously entering the middle air intake box 2 can only be discharged through the left side exhaust box. Conversely, when exhaust gas needs to be discharged through the right side exhaust box, the second drive mechanism drives the rotating baffle 8 to rotate towards the left side exhaust box, and then the first drive mechanism squeezes the elastic diaphragm 6, so that the elastic diaphragm 6 bounces onto the left ventilation hood 5.

[0065] The elastic diaphragm 6 has a fast spring action, and the elastic diaphragm 6 can block the corresponding ventilation hood 5 in an instant, thereby improving the switching speed of the device when switching the exhaust direction, and thus improving the efficiency of releasing exhaust gas.

[0066] The rotating baffle 8 is used to reduce the air pressure on the elastic diaphragm 6. The rotating baffle 8 can rotate towards the side of the elastic diaphragm 6 that bounces through the second drive mechanism. Thus, the exhaust gas that is vertically discharged towards the elastic diaphragm 6 will be blocked by the rotating baffle 8. After the elastic diaphragm 6 has bounced to one side, the blocking by the rotating baffle 8 effectively prevents the side of the elastic diaphragm 6 that is bulging out due to strong air pressure, thereby further improving the service life of the elastic diaphragm 6. At the same time, the rotating baffle 8, which is in an inclined state, can also guide the blocked exhaust gas into the cavity 7 on the other side, thereby improving the exhaust gas discharge efficiency.

[0067] The above embodiments only illustrate one or more implementations of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this patent should be determined by the appended claims.

Claims

1. A rotary disc type continuous rotary valve device, characterized in that, The system includes a gas distribution box (1), an elastic sealing assembly, and an auxiliary air intake assembly. The gas distribution box (1) includes a central air intake box (2) and two side exhaust pipes (3) respectively located on both sides of the central air intake box (2). The upper end of the central air intake box (2) is a funnel-shaped opening structure for allowing exhaust gas to flow in. Each side exhaust pipe (3) is connected to the lower end of the central air intake box (2). Each side exhaust pipe (3) is provided with an exhaust port (4). Each side exhaust pipe (3) is provided with a ventilation hood (5) for allowing exhaust gas to flow into the side exhaust pipe (3) at the connection point between it and the central air intake box (2). The elastic sealing assembly is located inside the central air intake box (2). The elastic sealing assembly includes an elastic diaphragm (6) and a first drive mechanism. The elastic diaphragm (6) is circular and located between the two ventilation hoods (5). The elastic diaphragm (6) divides the inner cavity of the central air intake box (2) into two sections. Two symmetrical chambers (7) are provided. The first drive mechanism is used to squeeze the center of the elastic diaphragm (6), so that the elastic diaphragm (6) can bounce onto the ventilation hood (5) on either side. The elastic diaphragm (6) tightly covers the corresponding ventilation hood (5), so that the corresponding side exhaust pipe (3) is blocked, thereby controlling the exhaust direction of the exhaust gas. The auxiliary air intake assembly is located at the upper end of the middle air intake box (2). The auxiliary air intake assembly includes a rotating baffle (8) and a second drive mechanism. The rotating baffle (8) is located between the two chambers (7). The second drive mechanism is used to drive the rotating baffle (8) to rotate toward the side where the elastic diaphragm (6) bounces, so that the exhaust gas that is about to flow into one of the chambers (7) is blocked in advance by the rotating baffle (8). At the same time, the rotating baffle (8) in an inclined state guides the exhaust gas into the other chamber (7).

2. The rotary continuous rotary valve device according to claim 1, characterized in that, The central air intake box (2) is rectangular, and each side exhaust pipe (3) is a cylindrical pipe. One end of each side exhaust pipe (3) is connected to the side wall of the corresponding side of the central air intake box (2). Each ventilation hood (5) is coaxially fixed in the end of the corresponding side exhaust pipe (3) near the central air intake pipe. Each ventilation hood (5) is recessed into the corresponding side exhaust pipe (3). The two ventilation hoods (5) are coaxial, and each ventilation hood (5) has several strip ventilation slots (9) evenly distributed along the circumference of the ventilation hood (5).

3. The rotary continuous rotary valve device according to claim 2, characterized in that, A vertical mounting plate (10) is fixed inside the central air intake box (2) and located between two ventilation hoods (5). The axis of each ventilation hood (5) is perpendicular to the side wall of the mounting plate (10). A circular through hole (11) coaxial with the two ventilation hoods (5) is opened in the middle of the mounting plate (10). A circular groove (12) is formed on the mounting plate (10) around the circular through hole (11). A rigid ring (13) is provided on the outer edge of the elastic diaphragm (6). The rigid ring (13) is locked in the circular groove (12), so that the elastic diaphragm (6) is fixed and coaxial with each ventilation hood (5).

4. The rotary continuous rotary valve device according to claim 2, characterized in that, The first drive mechanism includes a drive shaft (14) and an internal threaded sleeve (15). A rigid cylindrical sleeve (16) is coaxially formed at the center of the elastic diaphragm (6). The internal threaded sleeve (15) is coaxially fixed inside the rigid cylindrical sleeve (16). The drive shaft (14) passes horizontally through the center of the elastic diaphragm (6). The drive shaft (14) includes a central smooth shaft (17) and two threaded shafts (18) that are coaxially fixed to both ends of the central smooth shaft (17). Each threaded shaft (18) passes horizontally through the corresponding ventilation hood (5). Each threaded shaft (18) can be threadedly engaged with the internal threaded sleeve (15). One end of each threaded shaft (18) is coaxially formed with a rotating shaft (19) that is rotatably connected to the corresponding ventilation hood (5). One of the rotating shafts (19) passes through the corresponding side exhaust pipe (3).

5. A rotary continuous rotary valve device according to claim 4, characterized in that, Each ventilation hood (5) has a perforation (20) at its center. Each ventilation hood (5) has a horizontally shaped tube (21) on its outward protruding side, with one end connected to the perforation (20). The other end of the tube (21) is tightly fitted to the inner wall of the corresponding exhaust pipe (3). A bearing (22) is fixedly embedded in the end of the tube (21). One end of each rotating shaft (19) passes horizontally through the perforation (20) and is coaxially fixed to the inner ring of the corresponding bearing (22).

6. The rotary continuous rotary valve device according to claim 1, characterized in that, The horn-shaped opening structure at the upper end of the middle air intake box (2) is formed by connecting two inclined plates (23) and two vertical plates (24). The rotating baffle (8) is strip-shaped and spans between the two vertical plates (24). One end of the rotating baffle (8) in the long direction is hinged between the two vertical plates (24). Each vertical plate (24) has two symmetrical inclined baffles (25). The two short sides of the rotating baffle (8) can abut against the two corresponding inclined baffles (25).

7. A rotary continuous rotary valve device according to claim 6, characterized in that, On both sides of the other end of the rotating baffle (8) along its length, there is a guide pin (26) with its axis perpendicular to the vertical plate (24). Each vertical plate (24) has an arc-shaped guide groove (27). The guide pin (26) passes horizontally through the arc-shaped guide groove (27) and can slide within the corresponding arc-shaped guide groove (27). Each vertical plate (24) has a sealing ring (28) on its outer wall for dynamically sealing the arc-shaped guide groove (27). The sealing ring (28) is coaxial with the hinge end of the rotating baffle (8). 26) Passing through and fixedly connected to the sealing ring (28), the second drive mechanism includes two external turntables (29) respectively located on the sides of the two sealing rings (28). Each external turntable (29) is coaxial with the sealing ring (28). Two abutments (30) are formed on the peripheral wall of the external turntable (29) and spaced apart along the circumference of the external turntable (29). Each guide pin (26) is located between the two abutments (30), and each abutment (30) can abut against the guide pin (26) after the external turntable (29) rotates.

8. A rotary continuous rotary valve device according to claim 7, characterized in that, Each vertical plate (24) has an annular groove (31) formed on its outer wall, which is coaxial with the hinge end of the corresponding rotating baffle (8). Each sealing ring (28) is embedded in the corresponding annular groove (31), and the inner and outer walls of each sealing ring (28) are respectively in contact with the inner and outer walls of the annular groove (31).

Images