Environment-friendly rto purge valve

Abstract

The utility model discloses an environmental protection RTO purging valve, and the valve body is equipped with import and export, the valve body inside is provided with the baffle that separates its inside into the first chamber and the second chamber of each other independence, and the baffle is provided with the first chamber and the second chamber, and the first chamber is equipped with the first valve core and the second valve core, and the second chamber is equipped with the third valve core, and the first valve core, the second valve core and the third valve core are all connected with the drive motor, and the drive motor is connected with the control panel, and the control panel is connected with the temperature sensor, and the temperature sensor is connected with the pressure sensor, and the pressure sensor is connected with the humidity sensor, and the humidity sensor is connected with the flow sensor, and the flow sensor is connected with the temperature sensor, and the temperature sensor is connected with the pressure sensor, and the pressure sensor is connected with the humidity sensor, and the humidity sensor is connected with the flow sensor, and the flow sensor is connected with the temperature sensor, and the temperature sensor is connected with the pressure sensor, and the pressure sensor is connected with the humidity sensor, and the humidity sensor is connected with the flow sensor, and the flow sensor is connected with the temperature sensor, and the temperature sensor is connected with the pressure sensor, and the pressure sensor is connected with the humidity sensor, and the humidity sensor is connected with the flow sensor.

Description

Technical Field

[0001] This utility model belongs to the field of waste gas treatment technology, and in particular relates to an environmentally friendly RTO purging valve. Background Technology

[0002] A regenerative thermal oxidizer (RTO) is a highly efficient organic waste gas treatment device. During its working cycle, when the reversing valve switches, a chamber needs to be purged to remove residual volatile organic compounds (VOCs) from the regenerator, preventing them from being discharged in the next cycle and thus ensuring treatment efficiency.

[0003] Currently, the common RTO purging method involves using a single valve to purge an entire individual heat storage chamber in a single operation. However, due to the large cross-sectional area of ​​the RTO chamber and the relatively limited airflow and pressure of the purging fan, the purging airflow experiences low velocity and weak penetration as it flows through the large heat storage medium, easily creating dead zones within the medium. VOCs in these dead zones cannot be effectively removed and become emission sources in the next cycle, thus reducing the overall purification efficiency of the RTO.

[0004] Therefore, existing technologies suffer from problems such as uneven purge air distribution, the formation of dead zones, and unsatisfactory RTO purification efficiency. Utility Model Content

[0005] To address the problems mentioned above, the present invention aims to provide a partitioned purge valve for an RTO. By improving the valve structure, partitioned and centralized purge of the heat storage medium can be achieved, thereby increasing the purge velocity, reducing purge dead zones, and ultimately improving the waste gas treatment efficiency of the RTO.

[0006] To solve the above-mentioned technical problems, the specific technical solution of this utility model is as follows:

[0007] In some embodiments of this application, an environmentally friendly RTO purge valve is provided, including a valve body and a drive component. The valve body is provided with an inlet and an outlet, and the valve body is provided with a partition that divides its interior into a first chamber and a second chamber that are independent of each other.

[0008] The outlet includes a first outlet communicating with the first chamber and a second outlet communicating with the second chamber;

[0009] The drive component includes a first actuator and a second actuator that are controlled independently;

[0010] A first valve plate, driven by the first actuator, is provided at the first outlet to open or close the first outlet;

[0011] A second valve plate, driven by the second actuator, is provided at the second outlet to open or close the second outlet.

[0012] In some embodiments of this application, the flow cross-sectional areas of the first chamber and the second chamber are the same.

[0013] In some embodiments of this application, the flow cross-sectional area of ​​the first chamber is configured such that, when it is turned on alone, it guides all the purge airflow through half of the RTO heat storage body; the same applies to the second chamber.

[0014] In some embodiments of this application, the first valve plate and the second valve plate are butterfly valve plates or flap valve plates.

[0015] In some embodiments of this application, the first actuator and the second actuator are one of a cylinder, an electric actuator, or an electro-hydraulic actuator.

[0016] In some embodiments of this application, the first actuator and the second actuator are configured to operate alternately within a purging cycle, wherein:

[0017] The first actuator drives the first valve plate to open the first outlet, while the second actuator keeps the second valve plate closed and the second outlet closed, forming the first purging state;

[0018] Subsequently, the first actuator drives the first valve plate to close the first outlet, while the second actuator drives the second valve plate to open the second outlet, forming the second purging state.

[0019] In some embodiments of this application, the valve body has a single inlet for connecting to a purge air source.

[0020] In some embodiments of this application, an RTO exhaust gas treatment system includes a heat storage body and a purging system, characterized in that the purging system is equipped with a purging valve as described in any one of the claims, wherein the first outlet and the second outlet of the purging valve respectively correspond to different zones of the heat storage body.

[0021] In some embodiments of this application, the heat storage body is logically or physically divided into two purging regions, corresponding to the first outlet and the second outlet, respectively.

[0022] Compared with the prior art, the beneficial effects of this utility model are as follows: by dividing the heat storage body into sections and purging it in a concentrated manner, the purging wind speed and wind pressure are significantly improved, enhancing the penetration of the airflow into the pores of the heat storage body, thereby more effectively blowing out residual VOCs; by adopting a sectioned alternating purging method, the central or edge areas that are difficult to reach in the overall purging mode can also be effectively covered by high-speed airflow, greatly reducing purging dead zones; the overall structure is compact, only adding separation and independent drive control to the traditional valve structure, making it easy to modify with limited cost increase, but with significant effect, making it very suitable for upgrading existing RTO equipment. Attached Figure Description

[0023] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of the invention. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0024] Figure 1 Schematic diagrams of the internal structure under different overall states provided for embodiments of this utility model;

[0025] Figure 2 Schematic diagrams of the internal structure under different overall states provided for embodiments of this utility model;

[0026] Figure 3 Schematic diagrams of the internal structure under different overall states provided for embodiments of this utility model;

[0027] Figure 4 A schematic diagram of the installation structure provided for an embodiment of this utility model. Detailed Implementation

[0028] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit the scope of this utility model.

[0029] To better understand the purpose, structure, and function of this utility model, a more detailed description of this utility model is provided below with reference to the accompanying drawings.

[0030] like Figures 1 to 4As shown, this embodiment provides a partitioned purge valve for RTO, which mainly consists of a valve body 1, a partition 2, a first valve plate 5, a second valve plate 6, a first actuator 7, and a second actuator 8. The valve body 1 is generally a three-way structure, with an inlet 9 at the top for connecting to a purge duct. A partition 2 is fixedly installed inside the valve body 1, which divides the internal cavity of the valve body into two independent, non-communicating chambers, a first chamber 3 and a second chamber 4. The partition 2 extends to the bottom outlet plane of the valve body 1, and the bottom of the valve body 1 has two independent outlets: a first outlet communicating with the first chamber 3 and a second outlet communicating with the second chamber 4. At the first outlet, a first valve plate 5 is installed via a rotating shaft. The first valve plate 5 is preferably a butterfly valve plate, which can rotate in the horizontal plane. Similarly, at the second outlet, a second valve plate 6 is installed via another independent rotating shaft, and its structure is the same as that of the first valve plate 5.

[0031] The first actuator 7 is fixedly mounted on the valve body 1 via a bracket, and its output shaft is connected to the rotating shaft of the first valve plate 5 to drive the first valve plate 5 to rotate, thereby opening and closing the first outlet. The second actuator 8 is also fixedly mounted via a bracket, and its output shaft is connected to the rotating shaft of the second valve plate 6 to independently drive the opening and closing of the second valve plate 6. In this embodiment, both the first actuator 7 and the second actuator 8 are double-acting cylinders, and their air circuits are connected to a control solenoid valve (not shown in the figure), which is precisely controlled by the RTO's control system (such as a PLC).

[0032] Installation and operation process of this utility model:

[0033] The purge valve is installed on a three-chamber RTO unit. The valve body inlet 9 is connected to the RTO's common purge duct via a flange. The valve body's first outlet corresponds to the left side of one of the RTO's regenerator chambers (i.e., regenerator 10) (defined as regenerator section one), and the second outlet corresponds to the right side of the same regenerator chamber (defined as regenerator section two). The regenerator 10 is physically or logically divided into these two approximately equal-sized sections.

[0034] A complete purging cycle of this utility model includes the following steps:

[0035] Initial / Off State (see Figure 1 When the RTO does not require purging, both the first actuator 7 and the second actuator 8 are in the driven state, causing both the first valve plate 5 and the second valve plate 6 to be in the closed position. At this time, both the first chamber 3 and the second chamber 4 are blocked, and the purging air cannot pass through, so the system is in an energy-saving standby state.

[0036] First purging state (see...) Figure 2When the RTO cycle enters the purging process, the control system issues a command. The first actuator 7 actuates, driving the first valve plate 5 to move, fully opening the first chamber 3; simultaneously, the second actuator 8 remains stationary, the second valve plate 6 remains closed, and the second chamber 4 remains blocked. At this time, all the airflow from the purging fan enters from the inlet 9. Because the second chamber 4 is closed, all the airflow is concentrated through the first chamber 3 and the first outlet, blowing towards the heat storage section 11 at a higher flow rate (approximately double the airflow rate compared to the traditional single-valve purging of the entire area at once). This concentrated purging method effectively improves the air pressure and penetration, providing a powerful and thorough cleaning of section 1.

[0037] Second purging state (see...) Figure 3 After the first purging state lasts for a preset time (e.g., 10-15 seconds, the specific time can be set according to the working conditions), the control system issues the next set of commands. The first actuator 7 actuates, driving the first valve plate 5 to the closed position, blocking the first chamber 3; almost simultaneously (or with a slight delay), the second actuator 8 actuates, driving the second valve plate 6 to fully open the second chamber 4. At this time, the purging air path is instantly switched. All airflow is then concentrated through the second chamber 4 and the second outlet, blowing towards the heat storage section 12 at the same high flow rate, completing a powerful purging of section 12. After the second purging state lasts for the same preset time, the second actuator 8 actuates, closing the second valve plate 6, and the valve returns to its original position. Figure 1 The initial state shown indicates that the system is awaiting the next purging cycle.

[0038] The technical effects achieved by the above technical solution in the embodiments of this application are as follows:

[0039] By employing a first and second chamber separated by a partition, and in conjunction with independently controlled first and second valve plates and actuators, this invention can concentrate and guide a limited amount of purging airflow to half of the heat storage body. This design significantly increases the actual purging velocity and pressure acting on this localized area during a single purging phase. The higher air velocity enhances the penetration of the airflow into the pores of the heat storage body packing, thereby more effectively blowing out residual VOCs and solving the problem of insufficient purging force caused by dispersed airflow in the original technology.

[0040] By alternating the actions of two actuators within a single purging cycle (i.e., first opening the first chamber to purge the left side, then closing the first chamber and opening the second chamber to purge the right side), this invention achieves regionalized and sequential purging of the heat storage body. This working method ensures that both zones are completely covered by high-speed airflow, especially the central or corner areas that are difficult to reach in a single purging mode due to airflow short-circuiting or uneven distribution. This systematically reduces purging dead zones and improves the uniformity and thoroughness of purging.

[0041] The cleaner and more thorough purging effect brought about by this invention directly reduces the concentration of residual VOCs in the heat storage medium before process switching. This means that in the next cycle, when clean air passes through the purged heat storage medium for preheating, the total amount of VOCs carried and released into the atmosphere will be significantly reduced. Therefore, this invention, by improving the efficiency of this key purging process, provides an effective guarantee for improving the overall VOCs purification efficiency and treatment stability of RTO equipment.

[0042] The core structure of this invention involves adding a baffle plate inside a conventional valve and employing two independent valve plates and actuators. This compact structure requires minimal modification to existing RTO duct systems, making it suitable as a standard configuration for new equipment and also ideal for low-cost upgrades of existing RTO equipment with poor performance. Its control logic is simple and reliable; only minor adjustments to the existing control program are needed to achieve alternating purging, making implementation convenient and possessing high engineering application value.

[0043] In the description of this application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0044] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0045] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0046] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For the apparatus disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple; relevant parts can be referred to the method section.

[0047] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An environmentally friendly RTO purge valve, comprising a valve body (1) and a drive component, wherein the valve body (1) is provided with an inlet and an outlet, characterized in that: The valve body (1) is provided with a partition (2) that divides its interior into a first chamber (3) and a second chamber (4) that are independent of each other. The outlet includes a first outlet communicating with the first chamber (3) and a second outlet communicating with the second chamber (4); The drive component includes a first actuator (7) and a second actuator (8) that are controlled independently. A first valve plate (5) is provided at the first outlet, which is driven by the first actuator (7) to open or close the first outlet. The second outlet is provided with a second valve plate (6) driven by the second actuator (8) to open or close the second outlet.

2. The environmentally friendly RTO purge valve according to claim 1, characterized in that, The first chamber (3) and the second chamber (4) have the same flow cross-sectional area.

3. The environmentally friendly RTO purge valve according to claim 2, characterized in that, The flow cross-sectional area of ​​the first chamber (3) is configured such that when it is turned on alone, it guides all the purge airflow through half of the RTO heat storage body (9); the same applies to the second chamber (4).

4. The environmentally friendly RTO purge valve according to claim 1, characterized in that, The first valve plate (5) and the second valve plate (6) are butterfly valve plates or flap valve plates.

5. The environmentally friendly RTO purge valve according to claim 1, characterized in that, The first actuator (7) and the second actuator (8) are one of a cylinder, an electric actuator or an electro-hydraulic actuator.

6. The environmentally friendly RTO purge valve according to claim 1, characterized in that, The first actuator (7) and the second actuator (8) are configured to operate alternately within a purging cycle, wherein: The first actuator (7) drives the first valve plate (5) to open the first outlet, while the second actuator (8) keeps the second valve plate (6) closed to form the first purging state; Subsequently, the first actuator (7) drives the first valve plate (5) to close the first outlet, while the second actuator (8) drives the second valve plate (6) to open the second outlet, forming the second purging state.

7. An environmentally friendly RTO purge valve according to any one of claims 1 to 6, characterized in that, The valve body (1) has a single inlet for connecting to a purge air source.

Images