RTO rotary sealing valve

Abstract

The utility model discloses an RTO rotary sealing valve which comprises a supporting foot, a cavity is formed in the upper end face of the supporting foot, a barrel is arranged in the cavity through a rotary support, a flow dividing mechanism is arranged in the barrel, and a driving mechanism is arranged on the side face of the barrel. The flow dividing mechanism comprises a partition plate, an exhaust outer cavity, an air inlet outer cavity, a blowing and catching outer cavity, a center column pipe, an air inlet inner cavity, an exhaust inner cavity, a blowing and catching inner cavity, an air inlet pipe, an exhaust pipe and a blowing and catching pipe. The valve is simple in structure and reasonable in design, system complexity and potential fault points are reduced through the design, the overall reliability and stability of a valve system are enhanced, in addition, the designed connector is designed at the lower end of the cylinder, maintenance personnel can conveniently access and maintain connecting parts, only the maintenance process is simplified, and the maintenance cost is reduced. And the downtime of the system is shortened, and the operation efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of RTO equipment, in particular to an RTO rotary sealing valve. Background Art

[0002] Regenerative Thermal Oxidizer (RTO) is a highly efficient industrial waste gas treatment equipment, widely used to control the emission of volatile organic compounds (VOCs). RTO converts harmful VOCs into harmless carbon dioxide and water vapor through a high-temperature combustion process, and effectively recovers heat energy through its internal heat storage bricks to reduce energy consumption. One of the core components of the RTO system is the rotary seal valve, which is responsible for controlling the gas flow direction during the combustion process, ensuring heat exchange efficiency and preventing ineffective loss of heat energy. This seal valve can switch the gas flow path in different operating stages through its unique rotation mechanism, thereby maximizing the utilization of heat energy and optimizing the waste gas treatment efficiency.

[0003] However, in the existing RTO rotary sealing valve design, there are many internal rotating connecting parts, which to a certain extent increases the mechanical complexity of the equipment and potential maintenance difficulties. Since the rotary sealing valve contains multiple rotating interfaces, such as bearings, gears and other connecting elements, these components are prone to wear and damage during long-term operation, especially when dealing with high temperature and corrosive gases. The maintenance and replacement of these rotating parts not only requires disassembly of the entire drum, but also may cause the system to suspend operation, affecting production efficiency. In addition, each rotating interface is a potential leakage point. Long-term use and environmental factors may cause the sealing performance to deteriorate, increasing the risk of environmental pollution. Therefore, improving the design of the rotary sealing valve to reduce maintenance complexity and improve its operational reliability is a key direction to improve the overall performance of the RTO system. Utility Model Content

[0004] The purpose of the utility model is to provide an RTO rotary sealing valve to solve the problems raised in the above background technology.

[0005] To achieve the above object, the utility model provides the following technical solution: an RTO rotary sealing valve, comprising a support foot, wherein the upper end surface of the support foot is provided with a cavity, a cylinder is provided inside the cavity through a rotating bracket, a flow dividing mechanism is provided inside the cylinder, and a driving mechanism is provided on the side of the cylinder;

[0006] The diversion mechanism includes:

[0007] A partition plate, the partition plate is arranged inside the cylinder, the partition plate divides the inside of the cylinder into an exhaust outer cavity and an intake outer cavity, and a blowing and capturing outer cavity is opened inside the partition plate;

[0008] A central column tube, the central column tube is arranged in the middle part of the partition plate, an air intake inner cavity is arranged inside the central column tube, the air intake inner cavity is connected with the air intake outer cavity, an exhaust inner cavity is arranged inside the air intake inner cavity, the exhaust inner cavity is connected with the exhaust outer cavity, a blow-and-catch inner cavity is arranged inside the exhaust inner cavity, the blow-and-catch inner cavity is connected with the blow-and-catch outer cavity;

[0009] An air intake pipe, the outer side of which is connected to the air intake inner cavity via a rotating sealing ring, an exhaust pipe is arranged inside the air intake pipe, the outer side of which is connected to the exhaust inner cavity via a rotating sealing ring, a blow-and-catcher pipe is arranged inside the exhaust pipe, the outer side of which is connected to the blow-and-catcher inner cavity via a rotating sealing ring.

[0010] Preferably, the driving mechanism comprises:

[0011] Teeth, the teeth are arranged on the side of the cavity;

[0012] A rotating rod is fixedly arranged inside the cavity, one end of the rotating rod is provided with a gear, the gear is meshed and connected with the teeth, and the other end of the rotating rod is connected with a reduction motor.

[0013] Preferably, the connecting portion between the air inlet pipe and the air inlet inner cavity and the connecting portion between the blow-and-capture pipe and the blow-and-capture inner cavity are both provided with a first leak-proof portion.

[0014] Preferably, a second leak-proof portion is provided at the connection portion between the exhaust pipe and the exhaust inner cavity.

[0015] Preferably, the blow-and-catch outer cavity has an arc-shaped geometric shape.

[0016] Preferably, the central column tube and the partition plate are both made of stainless steel.

[0017] Compared with the prior art, the beneficial effects of the utility model are:

[0018] The RTO rotary sealing valve is provided with a diverter mechanism, which includes a partition plate, an exhaust outer cavity, an intake outer cavity, a blow-and-catch outer cavity, a central column tube, an intake inner cavity, an exhaust inner cavity, a blow-and-catch inner cavity, an intake pipe, an exhaust pipe, and a blow-and-catch pipe. This design reduces system complexity and potential failure points, thereby enhancing the overall reliability and stability of the valve system. In addition, the interface is designed at the lower end of the cylinder, so that maintenance personnel can more conveniently access and maintain the connection parts, which not only simplifies the maintenance process, but also shortens the system downtime and improves operating efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a top view of the utility model;

[0020] Figure 2 It is a schematic diagram of the internal structure of the utility model;

[0021] Figure 3 It is a schematic diagram of the connection part between the central column tube and each pipeline of the utility model;

[0022] Figure 4 This is a top view of the internal structure of the central column tube of the utility model;

[0023] Figure 5 It is an enlarged view of point A of the utility model;

[0024] Figure 6 This is a schematic diagram of the internal structure of the top of the central column tube of the utility model;

[0025] Figure 7 It is a cross-sectional view at the center line of the partition plate of the cylinder of the utility model.

[0026] In the figure: 1. support leg; 2. cavity; 3. cylinder; 4. diversion mechanism; 401. partition plate; 402. exhaust outer cavity; 403. intake outer cavity; 404. blow-and-catch outer cavity; 405. central column tube; 406. intake inner cavity; 407. exhaust inner cavity; 408. blow-and-catch inner cavity; 409. intake pipe; 410. exhaust pipe; 411. blow-and-catch pipe; 5. driving mechanism; 501. teeth; 502. rotating rod; 503. gear; 504. reduction motor; 6. first leak-proof part; 7. second leak-proof part. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicating orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0029] In the description of this patent, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "setting" should be understood in a broad sense, for example, it can be fixed connection, setting, or detachable connection, setting, or integrated connection, setting. For ordinary technicians in this field, the specific meanings of the above terms in this patent can be understood according to specific circumstances.

[0030] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "several" is two or more, unless otherwise clearly and specifically defined. Example

[0031] See also Figure 1-7 As shown, the utility model provides a technical solution of an RTO rotary sealing valve: an RTO rotary sealing valve, comprising a support leg 1, a cavity 2 is installed on the upper end surface of the support leg 1, a cylinder 3 is connected to the cavity 2 through a rotating bracket, a flow dividing mechanism 4 is installed inside the cylinder 3, and a driving mechanism 5 is connected to the side of the cylinder 3;

[0032] The flow dividing mechanism 4 includes a partition plate 401, a central column tube 405, and an air intake pipe 409. The partition plate 401 is fixedly arranged on the inner side of the cylinder 3. The partition plate 401 divides the interior of the cylinder 3 into an exhaust outer chamber 402 and an air intake outer chamber 403. An air blowing and capturing outer chamber 404 is provided on the inner side of the partition plate 401. The central column tube 405 is arranged in the middle part of the partition plate 401. An air intake inner chamber 406 is designed inside the central column tube 405. The air intake inner chamber 406 and the air intake outer chamber 403 are connected to each other. The exhaust cavity 407 is connected to the exhaust outer cavity 402, the exhaust cavity 407 is connected to the exhaust inner cavity 408, the exhaust inner cavity 408 is connected to the exhaust outer cavity 404, the outer side of the intake pipe 409 is connected to the intake cavity 406 through a rotating sealing ring, the interior of the intake pipe 409 is connected to the exhaust pipe 410, and the outer side of the exhaust pipe 410 is connected to the exhaust outer cavity 402 through a rotating sealing ring. The inner cavity 407 is connected, and a blow-catching pipe 411 is arranged inside the exhaust pipe 410. The outer side of the blow-catching pipe 411 is connected to the blow-catching inner cavity 408 through a rotating sealing ring. During normal operation, the inlet of the air intake pipe 409 is connected to the VOCs pipeline, the inlet of the exhaust pipe 410 is connected to the external heat exchanger, and the blow-catching pipe 411 is connected to the external fan. During operation, VOCs enter the air intake outer cavity 403 through the air intake pipe 409 and the air intake inner cavity 406, and are finally transported into the combustion chamber for combustion. After combustion, the VOCs will be completely oxidized into carbon dioxide and water. The driving mechanism 5 provides power output to rotate the cylinder 3. At this time, the clean air is discharged through the exhaust outer cavity 402, the exhaust inner cavity 407 and the exhaust pipe 410. On the other hand, the clean air further blows the VOCs to the combustion chamber through the blow-catching pipe 411, the blow-catching inner cavity 408 and the blow-catching outer cavity 404 for full combustion, while preventing its backflow.

[0033] The driving mechanism 5 includes teeth 501 and a rotating rod 502. The teeth 501 are arranged on the side of the cavity 2, and the rotating rod 502 is fixedly installed on the inner side of the cavity 2. A gear 503 is installed at one end of the rotating rod 502, and the gear 503 is meshed and connected with the teeth 501. The other end of the rotating rod 502 is connected to a reduction motor 504. During the driving process, the reduction motor 504 provides power to drive the rotating rod 502 to rotate. Due to the meshing of the gear 503 and the teeth 501, the cavity 2 together with the internal VOCs unit and the clean unit can be converted to ensure the normal operation of the rotary sealing valve.

[0034] The connection part between the air inlet pipe 409 and the air inlet inner cavity 406 and the connection part between the blow-and-capture pipe 411 and the blow-and-capture inner cavity 408 are both provided with a first leak-proof part 6. Figure 3 and Figure 5As shown, the convex portion of the central column tube 405 is located on the outside of the air inlet pipe 409, and the convex portion of the blow-catching inner cavity 408 is also located on the outside of the blow-catching tube 411. In addition, a guiding portion is provided in the direction of the internal gas outlet. This design can greatly reduce the possibility of the internal gas flowing to the rotating sealing ring, further reduce leakage, and increase the service life of the rotating sealing ring.

[0035] The connection portion between the exhaust pipe 410 and the exhaust inner cavity 407 is provided with a second leak-proof portion 7, such as Figure 3 and Figure 5 As shown, the direction of the second leak-proof part 7 is opposite to that of the first leak-proof part 6, which can prevent VOCs from entering the exhaust unit.

[0036] The capture outer cavity 404 has an arc-shaped geometry, and this design can optimize the flow path of the clean gas inside it. The arc-shaped structure helps to reduce the resistance and turbulence during air flow, so that the treated clean air can flow to the combustion chamber more smoothly and efficiently, improving the overall efficiency of the system. It also helps to ensure that the gas can be evenly distributed during the high-temperature oxidation process and optimize the effect of the oxidation reaction. In addition, the arc-shaped design is also conducive to reducing the noise and vibration of the system and improving the operating stability of the equipment.

[0037] The central column tube 405 is designed to transmit volatile organic compounds (VOCs) and treated clean gas. Its stainless steel structure not only provides the necessary mechanical strength, but also can resist high temperature and chemical corrosion, ensuring the safety and efficiency of the gas transmission process. The partition plate 401 is also made of stainless steel, which effectively divides the internal area of ​​the device into independent gas chambers, supports the efficient operation of the system and prevents cross-flow and cross-contamination between gases.

[0038] The working principle of the utility model is as follows:

[0039] When an RTO rotary sealing valve of the present embodiment is in use, untreated gas containing VOCs is first introduced into the system through the air inlet pipe 409. The gas enters the air inlet inner cavity 406 of the central column tube 405 through the air inlet pipe 409, and is then guided to the air inlet outer cavity 403. Here, the gas is transported to the combustion chamber, and the high-temperature combustion process converts the VOCs into carbon dioxide and water to complete the purification. The treated clean gas enters the exhaust pipe 410 through the exhaust inner cavity 407. The pipe is connected to an external heat exchanger to achieve effective heat recovery. At the same time, the blow-catcher pipe 411 guides part of the clean gas back to the blow-catcher inner cavity 408 and the blow-catcher outer cavity 404 to further purge the residual VOCs in the combustion chamber to ensure its complete combustion and prevent gas reflux. The driving mechanism 5 is powered by the reduction motor 504 to rotate the rotating rod 502 and the gear 503 at its end. Since the gear 503 meshes with the teeth 501 on the side of the chamber 2, the rotation of the chamber 2 is realized, and the relative position of the internal VOCs unit and the clean unit is adjusted to meet different operating requirements. This design reduces the complexity of the system and potential failure points, thereby enhancing the overall reliability and stability of the valve system. In addition, the interface design of the design is at the lower end of the cylinder, so that maintenance personnel can more conveniently access and maintain the connection parts, which not only simplifies the maintenance process, but also shortens the system downtime and improves operating efficiency.

[0040] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. An RTO rotary sealing valve, comprising a support leg (1), characterized in that: The upper end surface of the support leg (1) is provided with a cavity (2), a cylinder (3) is provided inside the cavity (2) via a rotating bracket, a flow diversion mechanism (4) is provided inside the cylinder (3), and a driving mechanism (5) is provided on the side of the cylinder (3); The diversion mechanism (4) comprises: A partition plate (401), the partition plate (401) being arranged on the inner side of the cylinder (3), the partition plate (401) dividing the interior of the cylinder (3) into an exhaust outer chamber (402) and an intake outer chamber (403), and a blowing and capturing outer chamber (404) being provided on the inner side of the partition plate (401); A central column tube (405), the central column tube (405) being arranged at the middle portion of the partition plate (401), the central column tube (405) being provided with an air intake inner cavity (406) in its interior, the air intake inner cavity (406) being in communication with an air intake outer cavity (403), the air intake inner cavity (406) being provided with an exhaust inner cavity (407) in its interior, the exhaust inner cavity (407) being in communication with an exhaust outer cavity (402), the exhaust inner cavity (407) being provided with a blow-and-catch inner cavity (408) in its interior, the blow-and-catch inner cavity (408) being in communication with an exhaust outer cavity (404); An air intake pipe (409), wherein the outer side of the air intake pipe (409) is connected to the air intake inner cavity (406) via a rotating sealing ring, an exhaust pipe (410) is arranged inside the air intake pipe (409), wherein the outer side of the exhaust pipe (410) is connected to the exhaust inner cavity (407) via a rotating sealing ring, and a blow-and-catch pipe (411) is arranged inside the exhaust pipe, wherein the outer side of the blow-and-catch pipe (411) is connected to the blow-and-catch inner cavity (408) via a rotating sealing ring.

2. The RTO rotary sealing valve according to claim 1, characterized in that: The driving mechanism (5) comprises: Teeth (501), the teeth (501) being arranged on a side surface of the cavity (2); A rotating rod (502) is fixedly arranged inside the cavity (2), one end of the rotating rod (502) is provided with a gear (503), the gear (503) is meshedly connected with the teeth (501), and the other end of the rotating rod (502) is connected to a reduction motor (504).

3. The RTO rotary sealing valve according to claim 1, characterized in that: The connection portion between the air inlet pipe (409) and the air inlet inner cavity (406) and the connection portion between the blow-and-catch pipe (411) and the blow-and-catch inner cavity (408) are both provided with a first leak-proof portion (6).

4. The RTO rotary sealing valve according to claim 1, characterized in that: The connection portion between the exhaust pipe (410) and the exhaust inner cavity (407) is provided with a second leak-proof portion (7).

5. The RTO rotary sealing valve according to claim 1, characterized in that: The blow-and-catch outer cavity (404) has an arc-shaped geometric shape.

6. The RTO rotary sealing valve according to claim 1, characterized in that: The central column tube (405) and the partition plate (401) are both made of stainless steel.

Images