Purging and purifying device for RTO

Abstract

The utility model discloses a purging and purifying device for RTO (regenerative thermal oxidizer), which comprises a central shaft, the central shaft is of a hollow shaft structure, one end of the central shaft is provided with a rotary valve rotor synchronously rotating with the central shaft, a rotary valve stator is mounted outside the rotary valve rotor, and the side wall of the rotary valve rotor is provided with a plurality of first rotor ventilation openings and a plurality of second rotor ventilation openings. A plurality of stator ventilation openings are formed in the side wall of the rotary valve stator, a first blowing opening is formed in the upper half portion of the center shaft, first partition plates are arranged on the two sides of the first blowing opening, the lower half portion of the center shaft penetrates through the blowing air inlet cavity, and a second blowing opening is formed in the portion, penetrating through the blowing air inlet cavity, of the center shaft. The rotary valve achieves the valve purging function and has the advantages of being low in leakage rate, simple in structure, long in service life of a sealing piece, low in cost and convenient to maintain.

Description

Technical Field

[0001] This utility model belongs to the field of high-temperature oxidation technology of organic waste gas, and relates to a purging and purification device for RTO. Background Technology

[0002] "RTO" is short for "Regenerative Thermal Oxidizer". This technology heats organic waste gas to a high temperature and then directly oxidizes and decomposes it into CO2 and H2O, thereby treating the waste gas pollutants and recovering the heat generated during decomposition. It is an energy-saving and environmentally friendly device for treating medium- to high-concentration organic waste gas.

[0003] The waste gas undergoes a process of heat absorption, oxidation, and release as it passes through the RTO regenerator and combustion chamber. A continuous stream of waste gas enters the RTO, and various switching valves facilitate the cyclical absorption and release of heat within the regenerator. After heat absorption, the regenerator must be purged with fresh air before proceeding to the next stage of purified gas release. Otherwise, the waste gas remaining in the regenerator will cause the RTO outlet emissions to fail to meet standards. Currently, conventional RTO purification and purging devices on the market generally suffer from high leakage rates. Furthermore, RTO purification and purging devices have complex structures, are prone to seal damage, and have high maintenance costs. Utility Model Content

[0004] The purpose of this invention is to provide a purging and purification device for RTO, which solves the problems of complex structure and high leakage rate in the prior art.

[0005] The technical solution adopted in this utility model is a purge and purification device for RTO, including a central shaft, which is a hollow shaft structure. A rotary valve rotor that rotates synchronously with the central shaft is provided at one end of the central shaft. A rotary valve stator is installed outside the rotary valve rotor. The side wall of the rotary valve rotor is provided with a plurality of first rotor ventilation openings and a plurality of second rotor ventilation openings. The side wall of the rotary valve stator is provided with a plurality of stator ventilation openings. The upper half of the central shaft is provided with a first purge opening. A first partition is provided on both sides of the first purge opening. The lower half of the central shaft passes through the purge air inlet cavity. The part of the central shaft that passes through the purge air inlet cavity is provided with a second purge opening.

[0006] The features of this utility model also include:

[0007] Several transverse seals are provided between the rotary valve rotor and the rotary valve stator.

[0008] The aforementioned transverse seals divide the rotary valve rotor and rotary valve stator into upper and lower parts. The upper part of the rotary valve rotor has several first rotor ventilation openings evenly distributed on both sides of the first purge opening. The lower part of the rotary valve rotor has several second rotor ventilation openings evenly distributed in half of the circumferential direction. The upper and lower parts of the rotary valve stator have several stator ventilation openings evenly distributed in the circumferential direction.

[0009] Vertical sealing strips are also provided between the rotary valve rotor and the rotary valve stator at the corresponding positions of the two first partitions.

[0010] The top sealing plate of the rotary valve rotor is a fully enclosed structure, and the bottom sealing plate of the rotary valve rotor is a semi-enclosed structure.

[0011] A second partition is also provided between the central shaft and the rotary valve rotor. The second partition is far away from the first purge opening and is opposite to the position of the first purge opening.

[0012] The first rotor ventilation opening and the stator ventilation opening are located on both sides of the first partition, and the second rotor ventilation opening is located on one side of the first partition.

[0013] The area between the two first partitions is a purging zone, and the relative position of the purging zone is a dead zone. The area between the purging zone and the dead zone is an air inlet zone on one side and an air outlet zone on the other side.

[0014] A pressure cap can be detachably installed at the joint between the purge air inlet chamber and the central shaft, and a sealing ring is also provided inside the pressure cap.

[0015] The beneficial effects of this utility model are:

[0016] This utility model relates to a purge and purification device for RTO (Regenerative Thermal Oxidizer). It achieves a rotary seal between the central shaft and the purge inlet chamber, isolating the purge air from the incoming exhaust gas and the outgoing purified airflow. When the rotary valve rotor rotates, the purge air is guided to different areas, enabling cyclical purge of different heat storage chambers or zones. This utility model realizes the purge function of the rotary valve, featuring low leakage rate, simple structure, long seal life, low cost, and convenient maintenance. It solves the problem of purge air leaking into the RTO device's inlet or outlet. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the RTO purging and purification device of this utility model;

[0018] Figure 2 This is a schematic diagram of the purge air inlet cavity structure of the purge purification device for RTO according to this utility model;

[0019] Figure 3 A horizontal sectional view of the RTO purging and purification device of this utility model.

[0020] In the diagram, 1. Rotary valve rotor; 2. Rotary valve stator; 3. First purge opening; 4. First partition; 4-1. Second partition; 5. Lateral seal; 6. Purge air inlet chamber; 7. Pressure cap; 8. Sealing ring; 9. Second purge opening; 10. Vertical sealing strip; 11. Central shaft; 11-1. Air inlet area; 11-2. Air outlet area; 11-3. Purge area; 11-4. Dead zone; 12. First rotor ventilation opening; 12-1. Second rotor ventilation opening; 13. Stator ventilation opening; 14. Air duct. Detailed Implementation

[0021] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0022] like Figure 1 As shown, the RTO purging and purification device includes a central shaft 11, which is a hollow shaft structure with closed ends. A rotary valve rotor 1, which rotates synchronously with the central shaft 11, is located at one end. A rotary valve stator 2 is mounted externally on the rotary valve rotor 1. The sidewall of the rotary valve rotor 1 has several first rotor ventilation openings 12 and several second rotor ventilation openings 12-1. The sidewall of the rotary valve stator 2 has several stator ventilation openings 13. Several transverse seals 5 are arranged between the rotary valve rotor 1 and the rotary valve stator 2, ensuring that the purging air can only flow between the transverse seals 5 in the interlayer region between the rotary valve rotor 1 and the rotary valve stator 2. The upper half of the central shaft 11 has a first purging opening 3, and first partitions 4 are provided on both sides of the first purging opening 3. The lower half of the central shaft 11 passes through a purging air inlet chamber 6, and the portion of the central shaft 11 passing through the purging air inlet chamber 6 has a second purging opening 9.

[0023] Several transverse seals 5 divide the rotary valve rotor 1 and rotary valve stator 2 into upper and lower parts. Several first rotor ventilation openings 12 are evenly distributed on both sides of the first purge opening 3 on the upper part of the rotary valve rotor 1. Several second rotor ventilation openings 12-1 are evenly distributed in half of the circumferential area of ​​the lower part of the rotary valve rotor 1. Several stator ventilation openings 13 are evenly distributed in the circumferential direction on the upper and lower parts of the rotary valve stator 2.

[0024] A vertical sealing strip 10 is also provided between the rotary valve rotor 1 and the rotary valve stator 2 at the corresponding positions of the two first partitions 4.

[0025] The top sealing plate of the rotary valve rotor 1 is a fully enclosed structure, and the bottom sealing plate of the rotary valve rotor 1 is a semi-enclosed structure.

[0026] like Figure 2As shown, a second partition 4-1 is also provided between the central shaft 11 and the rotary valve rotor 1. The second partition 4-1 is away from the first purge opening 3 and is opposite to the first purge opening 3. The first rotor ventilation opening 12 and the stator ventilation opening 13 are located on both sides of the first partition 4, and the second rotor ventilation opening 12-1 is located on one side of the first partition 4. The area between the two first partitions 4 is the purge zone 11-3, and the relative position of the purge zone 11-3 is the dead zone 11-4. One side between the purge zone 11-3 and the dead zone 11-4 is the air inlet zone 11-1, and the other side is the air outlet zone 11-2.

[0027] The main air intake of the RTO passes through the stator ventilation opening 13 in the lower half of the rotary valve stator 2, the second rotor ventilation opening 12-1, and then through the first rotor ventilation opening 12 and the stator ventilation opening 13 in the upper half of the rotary valve stator 2 before entering the air intake zone 11-1.

[0028] The main exhaust air from the RTO passes through the stator ventilation opening 13 in the upper half of the rotary valve stator 2 and the first rotor ventilation opening 12 from the exhaust zone 11-2, then through the semi-closed lower sealing plate at the bottom of the rotary valve rotor 1, and exits the entire rotary valve from the outlet of the lower sealing plate. This purging structure achieves both rotation of the rotary valve rotor 1 and isolation between the RTO intake / exhaust air and the purging air.

[0029] like Figure 3 As shown, a pressure cap 7 is detachably installed at the joint between the purge air inlet chamber 6 and the central shaft 11. A sealing ring 8 is also provided inside the pressure cap 7, forming a rotary seal with the central shaft 11. Since the rotary valve rotor 1 needs to rotate, there is a certain gap between the rotary valve rotor 1 and the purge air inlet chamber 6. The sealing ring 8 and the central shaft 11 form a rotary seal, ensuring that the purified purge air will not leak to the outside through the gap and that external exhaust gas will not enter the purge air inlet chamber 6. This allows the purge air to enter the rotating rotary valve rotor 1 from the stationary purge air inlet chamber 6.

[0030] A vertical sealing strip 10 is also provided between the rotary valve rotor 1 and the rotary valve stator 2 at the corresponding positions of the two first partitions 4, so that the purge air will not enter the gap between the rotary valve rotor 1 and the rotary valve stator 2 after entering the channel between the two first partitions 4. In addition, the setting of the transverse seal 5 prevents the purge air from flowing between the upper and lower layers, so that the purge air only leaves the heat storage chamber or heat storage area in the direction.

[0031] During operation, the first rotor ventilation opening 12 and the second rotor ventilation opening 12-1 on the rotary valve rotor 1, and the stator ventilation opening 13 on the rotary valve stator 2 are used for ventilation. The central shaft 11 is a hollow structure for passing purge air. The purge air enters the central shaft 11 through the non-rotating purge air inlet 6, and then exits from the first purge opening 3 at the top of the central shaft 11. Subsequently, it enters the channel formed by the first partition 4. The vertical sealing strip 10 isolates the airflow channel between the rotary valve rotor 1 and the rotary valve stator 2. The purge fan finally exits from the stator ventilation opening 13 on the rotary valve stator 2. When the rotary valve rotor 1 rotates, the purge air is guided to different areas to achieve cyclic purge of different heat storage chambers or heat storage zones.

[0032] Example 1

[0033] like Figure 1 As shown, the RTO purging and purification device includes a central shaft 11, which is a hollow shaft structure with closed ends. A rotary valve rotor 1, which rotates synchronously with the central shaft 11, is located at one end. A rotary valve stator 2 is mounted externally on the rotary valve rotor 1. The sidewall of the rotary valve rotor 1 has several first rotor ventilation openings 12 and several second rotor ventilation openings 12-1. The sidewall of the rotary valve stator 2 has several stator ventilation openings 13. Several transverse seals 5 are arranged between the rotary valve rotor 1 and the rotary valve stator 2, ensuring that the purging air can only flow between the transverse seals 5 in the interlayer region between the rotary valve rotor 1 and the rotary valve stator 2. The upper half of the central shaft 11 has a first purging opening 3, and first partitions 4 are provided on both sides of the first purging opening 3. The lower half of the central shaft 11 passes through a purging air inlet chamber 6, and the portion of the central shaft 11 passing through the purging air inlet chamber 6 has a second purging opening 9.

[0034] Example 2

[0035] like Figure 1 As shown, the RTO purging and purification device includes a central shaft 11, which is a hollow shaft structure with closed ends. A rotary valve rotor 1, which rotates synchronously with the central shaft 11, is located at one end. A rotary valve stator 2 is mounted externally on the rotary valve rotor 1. The sidewall of the rotary valve rotor 1 has several first rotor ventilation openings 12 and several second rotor ventilation openings 12-1. The sidewall of the rotary valve stator 2 has several stator ventilation openings 13. Several transverse seals 5 are arranged between the rotary valve rotor 1 and the rotary valve stator 2, ensuring that the purging air can only flow between the transverse seals 5 in the interlayer region between the rotary valve rotor 1 and the rotary valve stator 2. The upper half of the central shaft 11 has a first purging opening 3, and first partitions 4 are provided on both sides of the first purging opening 3. The lower half of the central shaft 11 passes through a purging air inlet chamber 6, and the portion of the central shaft 11 passing through the purging air inlet chamber 6 has a second purging opening 9.

[0036] Several transverse seals 5 divide the rotary valve rotor 1 and rotary valve stator 2 into upper and lower parts. Several first rotor ventilation openings 12 are evenly distributed on both sides of the first purge opening 3 on the upper part of the rotary valve rotor 1. Several second rotor ventilation openings 12-1 are evenly distributed in half of the circumferential area of ​​the lower part of the rotary valve rotor 1. Several stator ventilation openings 13 are evenly distributed in the circumferential direction on the upper and lower parts of the rotary valve stator 2.

[0037] Example 3

[0038] like Figure 1 As shown, the RTO purging and purification device includes a central shaft 11, which is a hollow shaft structure with closed ends. A rotary valve rotor 1, which rotates synchronously with the central shaft 11, is located at one end. A rotary valve stator 2 is mounted externally on the rotary valve rotor 1. The sidewall of the rotary valve rotor 1 has several first rotor ventilation openings 12 and several second rotor ventilation openings 12-1. The sidewall of the rotary valve stator 2 has several stator ventilation openings 13. Several transverse seals 5 are arranged between the rotary valve rotor 1 and the rotary valve stator 2, ensuring that the purging air can only flow between the transverse seals 5 in the interlayer region between the rotary valve rotor 1 and the rotary valve stator 2. The upper half of the central shaft 11 has a first purging opening 3, and first partitions 4 are provided on both sides of the first purging opening 3. The lower half of the central shaft 11 passes through a purging air inlet chamber 6, and the portion of the central shaft 11 passing through the purging air inlet chamber 6 has a second purging opening 9.

[0039] Several transverse seals 5 divide the rotary valve rotor 1 and rotary valve stator 2 into upper and lower parts. Several first rotor ventilation openings 12 are evenly distributed on both sides of the first purge opening 3 on the upper part of the rotary valve rotor 1. Several second rotor ventilation openings 12-1 are evenly distributed in half of the circumferential area of ​​the lower part of the rotary valve rotor 1. Several stator ventilation openings 13 are evenly distributed in the circumferential direction on the upper and lower parts of the rotary valve stator 2.

[0040] Vertical sealing strips 10 are also provided between the rotary valve rotor 1 and the rotary valve stator 2 at the corresponding positions of the two first partitions 4. The top sealing plate of the rotary valve rotor 1 is a fully enclosed structure, and the bottom sealing plate of the rotary valve rotor 1 is a semi-enclosed structure.

[0041] Example 4

[0042] like Figure 1As shown, the RTO purging and purification device includes a central shaft 11, which is a hollow shaft structure with closed ends. A rotary valve rotor 1, which rotates synchronously with the central shaft 11, is located at one end. A rotary valve stator 2 is mounted externally on the rotary valve rotor 1. The sidewall of the rotary valve rotor 1 has several first rotor ventilation openings 12 and several second rotor ventilation openings 12-1. The sidewall of the rotary valve stator 2 has several stator ventilation openings 13. Several transverse seals 5 are arranged between the rotary valve rotor 1 and the rotary valve stator 2, ensuring that the purging air can only flow between the transverse seals 5 in the interlayer region between the rotary valve rotor 1 and the rotary valve stator 2. The upper half of the central shaft 11 has a first purging opening 3, and first partitions 4 are provided on both sides of the first purging opening 3. The lower half of the central shaft 11 passes through a purging air inlet chamber 6, and the portion of the central shaft 11 passing through the purging air inlet chamber 6 has a second purging opening 9.

[0043] Several transverse seals 5 divide the rotary valve rotor 1 and rotary valve stator 2 into upper and lower parts. Several first rotor ventilation openings 12 are evenly distributed on both sides of the first purge opening 3 on the upper part of the rotary valve rotor 1. Several second rotor ventilation openings 12-1 are evenly distributed in half of the circumferential area of ​​the lower part of the rotary valve rotor 1. Several stator ventilation openings 13 are evenly distributed in the circumferential direction on the upper and lower parts of the rotary valve stator 2.

[0044] Vertical sealing strips 10 are also provided between the rotary valve rotor 1 and the rotary valve stator 2 at the corresponding positions of the two first partitions 4. The top sealing plate of the rotary valve rotor 1 is a fully enclosed structure, and the bottom sealing plate of the rotary valve rotor 1 is a semi-enclosed structure.

[0045] like Figure 2 As shown, a second partition 4-1 is also provided between the central shaft 11 and the rotary valve rotor 1. The second partition 4-1 is away from the first purge opening 3 and is opposite to the first purge opening 3. The first rotor ventilation opening 12 and the stator ventilation opening 13 are located on both sides of the first partition 4, and the second rotor ventilation opening 12-1 is located on one side of the first partition 4. The area between the two first partitions 4 is the purge zone 11-3, and the relative position of the purge zone 11-3 is the dead zone 11-4. One side between the purge zone 11-3 and the dead zone 11-4 is the air inlet zone 11-1, and the other side is the air outlet zone 11-2.

[0046] The main air intake of the RTO passes through the stator ventilation opening 13 in the lower half of the rotary valve stator 2, the second rotor ventilation opening 12-1, and then through the first rotor ventilation opening 12 and the stator ventilation opening 13 in the upper half of the rotary valve stator 2 before entering the air intake zone 11-1.

[0047] The main exhaust air from the RTO passes through the stator ventilation opening 13 and the first rotor ventilation opening 12 in the upper half of the rotary valve stator 2 from the exhaust zone 11-2, then through the semi-closed lower sealing plate at the bottom of the rotary valve rotor 1, and exits the entire rotary valve from the outlet of the lower sealing plate. This purging structure achieves the isolation of the RTO's inlet / outlet air and the purging air while the rotary valve rotor 1 rotates.

[0048] Example 5

[0049] like Figure 1 As shown, the RTO purging and purification device includes a central shaft 11, which is a hollow shaft structure with closed ends. A rotary valve rotor 1, which rotates synchronously with the central shaft 11, is located at one end. A rotary valve stator 2 is mounted externally on the rotary valve rotor 1. The sidewall of the rotary valve rotor 1 has several first rotor ventilation openings 12 and several second rotor ventilation openings 12-1. The sidewall of the rotary valve stator 2 has several stator ventilation openings 13. Several transverse seals 5 are arranged between the rotary valve rotor 1 and the rotary valve stator 2, ensuring that the purging air can only flow between the transverse seals 5 in the interlayer region between the rotary valve rotor 1 and the rotary valve stator 2. The upper half of the central shaft 11 has a first purging opening 3, and first partitions 4 are provided on both sides of the first purging opening 3. The lower half of the central shaft 11 passes through a purging air inlet chamber 6, and the portion of the central shaft 11 passing through the purging air inlet chamber 6 has a second purging opening 9.

[0050] Several transverse seals 5 divide the rotary valve rotor 1 and rotary valve stator 2 into upper and lower parts. Several first rotor ventilation openings 12 are evenly distributed on both sides of the first purge opening 3 on the upper part of the rotary valve rotor 1. Several second rotor ventilation openings 12-1 are evenly distributed in half of the circumferential area of ​​the lower part of the rotary valve rotor 1. Several stator ventilation openings 13 are evenly distributed in the circumferential direction on the upper and lower parts of the rotary valve stator 2.

[0051] Vertical sealing strips 10 are also provided between the rotary valve rotor 1 and the rotary valve stator 2 at the corresponding positions of the two first partitions 4. The top sealing plate of the rotary valve rotor 1 is a fully enclosed structure, and the bottom sealing plate of the rotary valve rotor 1 is a semi-enclosed structure.

[0052] like Figure 2 As shown, a second partition 4-1 is also provided between the central shaft 11 and the rotary valve rotor 1. The second partition 4-1 is away from the first purge opening 3 and is opposite to the first purge opening 3. The first rotor ventilation opening 12 and the stator ventilation opening 13 are located on both sides of the first partition 4, and the second rotor ventilation opening 12-1 is located on one side of the first partition 4. The area between the two first partitions 4 is the purge zone 11-3, and the relative position of the purge zone 11-3 is the dead zone 11-4. One side between the purge zone 11-3 and the dead zone 11-4 is the air inlet zone 11-1, and the other side is the air outlet zone 11-2.

[0053] The main air intake of the RTO passes through the stator ventilation opening 13 in the lower half of the rotary valve stator 2, the second rotor ventilation opening 12-1, and then through the first rotor ventilation opening 12 and the stator ventilation opening 13 in the upper half of the rotary valve stator 2 before entering the air intake zone 11-1.

[0054] The main exhaust air from the RTO passes through the stator ventilation opening 13 in the upper half of the rotary valve stator 2 and the first rotor ventilation opening 12 from the exhaust zone 11-2, then through the semi-closed lower sealing plate at the bottom of the rotary valve rotor 1, and exits the entire rotary valve from the outlet of the lower sealing plate. This purging structure achieves both rotation of the rotary valve rotor 1 and isolation between the RTO intake / exhaust air and the purging air.

[0055] like Figure 3 As shown, a pressure cap 7 is detachably installed at the joint between the purge air inlet chamber 6 and the central shaft 11. A sealing ring 8 is also provided inside the pressure cap 7, forming a rotary seal with the central shaft 11. Since the rotary valve rotor 1 needs to rotate, there is a certain gap between the rotary valve rotor 1 and the purge air inlet chamber 6. The sealing ring 8 and the central shaft 11 form a rotary seal, ensuring that the purified purge air will not leak to the outside through the gap and that external exhaust gas will not enter the purge air inlet chamber 6. This allows the purge air to enter the rotating rotary valve rotor 1 from the stationary purge air inlet chamber 6.

[0056] Example 6

[0057] like Figure 1 As shown, the RTO purging and purification device includes a central shaft 11, which is a hollow shaft structure with closed ends. A rotary valve rotor 1, which rotates synchronously with the central shaft 11, is located at one end. A rotary valve stator 2 is mounted externally on the rotary valve rotor 1. The sidewall of the rotary valve rotor 1 has several first rotor ventilation openings 12 and several second rotor ventilation openings 12-1. The sidewall of the rotary valve stator 2 has several stator ventilation openings 13. Several transverse seals 5 are arranged between the rotary valve rotor 1 and the rotary valve stator 2, ensuring that the purging air can only flow between the transverse seals 5 in the interlayer region between the rotary valve rotor 1 and the rotary valve stator 2. The upper half of the central shaft 11 has a first purging opening 3, and first partitions 4 are provided on both sides of the first purging opening 3. The lower half of the central shaft 11 passes through a purging air inlet chamber 6, and the portion of the central shaft 11 passing through the purging air inlet chamber 6 has a second purging opening 9.

[0058] Several transverse seals 5 divide the rotary valve rotor 1 and rotary valve stator 2 into upper and lower parts. Several first rotor ventilation openings 12 are evenly distributed on both sides of the first purge opening 3 on the upper part of the rotary valve rotor 1. Several second rotor ventilation openings 12-1 are evenly distributed in half of the circumferential area of ​​the lower part of the rotary valve rotor 1. Several stator ventilation openings 13 are evenly distributed in the circumferential direction on the upper and lower parts of the rotary valve stator 2.

[0059] Vertical sealing strips 10 are also provided between the rotary valve rotor 1 and the rotary valve stator 2 at the corresponding positions of the two first partitions 4. The top sealing plate of the rotary valve rotor 1 is a fully enclosed structure, and the bottom sealing plate of the rotary valve rotor 1 is a semi-enclosed structure.

[0060] like Figure 2 As shown, a second partition 4-1 is also provided between the central shaft 11 and the rotary valve rotor 1. The second partition 4-1 is away from the first purge opening 3 and is opposite to the first purge opening 3. The first rotor ventilation opening 12 and the stator ventilation opening 13 are located on both sides of the first partition 4, and the second rotor ventilation opening 12-1 is located on one side of the first partition 4. The area between the two first partitions 4 is the purge zone 11-3, and the relative position of the purge zone 11-3 is the dead zone 11-4. One side between the purge zone 11-3 and the dead zone 11-4 is the air inlet zone 11-1, and the other side is the air outlet zone 11-2.

[0061] The main air intake of the RTO passes through the stator ventilation opening 13 in the lower half of the rotary valve stator 2, the second rotor ventilation opening 12-1, and then through the first rotor ventilation opening 12 and the stator ventilation opening 13 in the upper half of the rotary valve stator 2 before entering the air intake zone 11-1.

[0062] The main exhaust air from the RTO passes through the stator ventilation opening 13 in the upper half of the rotary valve stator 2 and the first rotor ventilation opening 12 from the exhaust zone 11-2, then through the semi-closed lower sealing plate at the bottom of the rotary valve rotor 1, and exits the entire rotary valve from the outlet of the lower sealing plate. This purging structure achieves both rotation of the rotary valve rotor 1 and isolation between the RTO intake / exhaust air and the purging air.

[0063] like Figure 3 As shown, a pressure cap 7 is detachably installed at the joint between the purge air inlet chamber 6 and the central shaft 11. A sealing ring 8 is also provided inside the pressure cap 7, forming a rotary seal with the central shaft 11. Since the rotary valve rotor 1 needs to rotate, there is a certain gap between the rotary valve rotor 1 and the purge air inlet chamber 6. The sealing ring 8 and the central shaft 11 form a rotary seal, ensuring that the purified purge air will not leak to the outside through the gap and that external exhaust gas will not enter the purge air inlet chamber 6. This allows the purge air to enter the rotating rotary valve rotor 1 from the stationary purge air inlet chamber 6.

[0064] A vertical sealing strip 10 is also provided between the rotary valve rotor 1 and the rotary valve stator 2 at the corresponding positions of the two first partitions 4, so that the purge air will not enter the gap between the rotary valve rotor 1 and the rotary valve stator 2 after entering the channel between the two first partitions 4. In addition, the setting of the transverse seal 5 prevents the purge air from flowing between the upper and lower layers, so that the purge air only leaves the heat storage chamber or heat storage area in the direction.

Claims

1. A purifier for RTO characterized by comprising: The utility model provides a kind of rotary valve, including center shaft (11), the center shaft (11) is hollow shaft structure, the center shaft (11) one end is equipped with its synchronous rotation rotary valve rotor (1), rotary valve rotor (1) outside is equipped with rotary valve stator (2), rotary valve rotor (1) side wall is equipped with several rotor first rotor ventilation opening (12) and several second rotor ventilation opening (12-1), rotary valve stator (2) side wall is equipped with several stator ventilation opening (13), the upper half of the center shaft (11) is equipped with first purging opening (3), the both sides of first purging opening (3) are equipped with first baffle (4), the lower half of the center shaft (11) passes through purging air inlet cavity (6), the part of the center shaft (11) passing through purging air inlet cavity (6) is equipped with second purging opening (9).

2. The purging device for RTO according to claim 1, characterized by, Several the transverse seal (5) are transversely arranged between the rotary valve rotor (1) and the rotary valve stator (2).

3. The purging device for RTO according to claim 2, characterized in that, Several the transverse seal (5) divide the rotary valve rotor (1) and the rotary valve stator (2) into two parts, the rotary valve rotor (1) upper part is evenly distributed with several first rotor ventilation openings (12) along the both sides of the first purging opening (3), and the rotary valve rotor (1) lower part is evenly distributed with several second rotor ventilation openings (12-1) along the half region in the circumferential direction; The rotary valve stator (2) is evenly distributed with several stator ventilation openings (13) along the circumferential direction.

4. The purging device for RTO according to claim 1, characterized by The rotary valve rotor (1) and the rotary valve stator (2) are further provided with a vertical sealing strip (10) at the corresponding position of the two first baffles (4).

5. The purging device for RTO according to claim 1, wherein The top sealing plate of the rotary valve rotor (1) is a full-closed structure, and the bottom sealing plate of the rotary valve rotor (1) is a semi-closed structure.

6. The purging purge device for RTO according to claim 1, characterized by, The center shaft (11) and the rotary valve rotor (1) are further provided with a second baffle (4-1), and the second baffle (4-1) is away from the first purging opening (3) and opposite to the position of the first purging opening (3).

7. The purging device for RTO according to claim 1, wherein The first rotor ventilation opening (12) and the stator ventilation opening (13) are respectively located on the two sides of the first baffle (4), and the second rotor ventilation opening (12-1) is located on one side of the first baffle (4).

8. The purging purge device for RTO according to claim 1, characterized by, The first baffle (4) is a purging area (11-3), and the opposite position of the first baffle (4) is a dead area (11-4). One side of the purging area (11-3) and the dead area (11-4) is an air inlet area (11-1), and the other side is an air outlet area (11-2).

9. The purging device for RTO according to claim 1, wherein The blow-by air inlet cavity (6) and the center shaft (11) joint can be detachably installed with a gland (7), and the gland (7) is further provided with a sealing ring (8) inside.

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