Centering compensation graded sealing device

Abstract

This utility model relates to a centering compensation graded sealing device, comprising: a centering mechanism, wherein the number of centering mechanisms is several, and the several centering mechanisms are arranged around the air holes of the incinerator; a sealing mechanism, the position of which corresponds to the air holes of the incinerator; wherein the centering mechanism includes: a centering telescopic device, which is set on the incinerator; a centering support frame, which is set on the incinerator; and a centering fork, the tail end of which passes through the centering support frame and connects to the centering telescopic device, with the functional end of the centering fork facing the air holes. The fitting structure of the double sealing groove and double valve plate of this utility model reduces the leakage rate and solves the gap problem of traditional single groove seals; the elastic element is located between the rigid and flexible valve plates, which can absorb vibration, and with the high temperature resistant material, it extends the valve core life and avoids the cracking of traditional integral valve cores due to thermal deformation (such as the warping of traditional valve cores); the centering telescopic device is distributed radially along the valve core, and works with the guide groove of the centering support frame to control the radial offset.

Description

Technical Field

[0001] This utility model relates to the field of industrial waste gas treatment in the environmental protection equipment manufacturing industry, more precisely to the field of regenerative thermal oxidizer (RTO) technology and volatile organic compound (VOCs) waste gas treatment equipment, and in particular to a centrally compensated graded sealing device. Background Technology

[0002] With my country's increasing environmental regulation, VOCs treatment technologies are maturing, among which regenerative thermal oxidizers (RTOs) are one of the mainstream VOCs treatment technologies worldwide. However, existing technologies lack a coordinated alignment system, relying solely on simple shafts / linkages to connect the actuators. This leads to radial displacement of the valve core during thermal expansion and contraction, and the support depends on ordinary welded brackets, resulting in large oscillations of the valve core during movement and exacerbating seal wear. Utility Model Content

[0003] In view of the deficiencies in the prior art, the purpose of this utility model is to provide a centering compensation graded sealing device to prevent the valve core from easily deviating radially.

[0004] To solve the above-mentioned technical problems, the present invention provides a centering compensation graded sealing device, comprising: a centering mechanism, wherein the number of centering mechanisms is several, and the several centering mechanisms are arranged around the air vents of the incinerator; a sealing mechanism, wherein the sealing mechanism is positioned corresponding to the air vents of the incinerator; wherein the centering mechanism comprises: a centering telescopic member, wherein the centering telescopic member is disposed on the incinerator; a centering support frame, wherein the centering support frame is disposed on the incinerator; and a centering fork, wherein the tail end of the centering fork passes through the centering support frame and is connected to the centering telescopic member, and the functional end of the centering fork faces the air vents.

[0005] The number of centering mechanisms is three, and the three centering mechanisms are evenly distributed at 120° around the air holes of the incinerator.

[0006] The centering fork has a Y-shaped structure.

[0007] The sealing mechanism includes: a lift valve support seat; a sealing telescopic member disposed on the lift valve support seat; a push rod support frame disposed on the lift valve support seat, with the push rod of the sealing telescopic member passing through the push rod support frame; a valve core assembly disposed at the end of the push rod; and a sealing assembly disposed within the vent, with the valve core assembly corresponding to the sealing assembly.

[0008] The valve core assembly includes: a first valve plate disposed at the end of the push rod, and a first valve plate sealing ring provided on the side of the first valve plate facing the incinerator; and a second valve plate connected to the first valve plate via a connector, and a second valve plate sealing ring provided on the side of the second valve plate facing the incinerator; wherein the first valve plate and the second valve plate are coaxial.

[0009] The sealing assembly includes: a first sealing groove disposed within the air hole, the first sealing groove corresponding to the first valve plate sealing ring; and a second sealing groove disposed within the air hole, the second sealing groove corresponding to the second valve plate sealing ring; wherein the first sealing groove and the second sealing groove are coaxial.

[0010] The connector is an elastic connector.

[0011] The first valve plate is a rigid valve plate.

[0012] The second valve plate is a flexible valve plate.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] 1. Through the coordinated system of "centering expansion joint + centering bracket + centering fork", rapid centering is achieved during the installation stage. At the same time, it is compatible with the dual sealing groove graded layout of "rigid / flexible valve plate" to eliminate the risk of sealing misalignment in the initial and hot state.

[0015] 2. By using a split valve core consisting of a rigid valve plate, a flexible valve plate, and an elastic element, the rigid valve plate resists impact, the flexible valve plate compensates for deformation, and the elastic structure absorbs thermal expansion stress, thus achieving continuous sealing surface contact at high temperatures and reducing the damage to the seal caused by thermal deformation.

[0016] 3. By using the integrated rigid structure of "push rod support frame + lifting valve support seat" and cooperating with the centering mechanism, the rigidity of the transmission support is enhanced, the radial offset of the valve core and the swing amplitude are controlled, the operational stability is improved and the equipment life is extended.

[0017] 4. Through the graded design of the double sealing groove (rigid valve plate sealing groove + flexible valve plate sealing groove) and the sealing components, the synergistic sealing of "rigid impact resistance + flexible deformation compensation" is achieved. Attached Figure Description

[0018] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings.

[0019] Figure 1 This is a schematic diagram of the centering compensation and graded sealing device of this utility model;

[0020] Figure 2 This is a schematic diagram of the sealing mechanism of the centering compensation graded sealing device of this utility model. Figure 1 ;

[0021] Figure 3 This is a schematic diagram of the sealing mechanism of the centering compensation graded sealing device of this utility model. Figure 2 ;

[0022] Figure 4 This is a schematic diagram of the sealing assembly structure of the centering compensation graded sealing device of this utility model.

[0023] Explanation of reference numerals in the accompanying drawings of this utility model's centering compensation and graded sealing device:

[0024] Detailed Implementation

[0025] To make the objectives, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the scope of the present utility model.

[0026] For ease of description, 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 indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "multiple" means two or more, unless otherwise explicitly specified. In this application, unless otherwise explicitly specified and limited, terms such as "installed," "connected," "joined," and "fixed" 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; they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0027] Unless otherwise specified, the terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains, and should be understood to have the meaning consistent with the meaning in the context of the relevant art, and should not be interpreted in an idealized or over-formalized manner, except as expressly defined in this invention.

[0028] like Figures 1-4As shown, the centering mechanism in the centering compensation graded sealing device of this utility model includes a centering telescopic device 1, a centering support frame 2, and a centering fork 3. The centering telescopic device 1 is vertically / obliquely connected to the centering support frame 2. The front end of the centering fork 3 abuts or connects to the valve core assembly, and the rear end is embedded in the guide groove of the centering support frame 2. The three form a three-way centering chain of "telescopic drive → support guide → fork linkage". During installation, the valve core assembly is finely adjusted for alignment. During operation, thermal expansion and contraction are compensated to continuously maintain the coaxiality of the valve core assembly and the sealing groove of the incinerator 14.

[0029] The sealing mechanism includes a push rod support frame 6, a lift valve support seat 4, and a valve core assembly. The push rod support frame 6 is fixedly connected to the lift valve support seat 4. The sealing expansion joint 5 (in this embodiment, a cylinder) is mounted on the lift valve support seat 4 as the actuator. The push rod 16 passes through the push rod support frame 6 and connects to the valve core assembly. The lift valve support seat 4 is used to enhance axial support rigidity and bear the weight of the valve core assembly and the sealing expansion joint 5. The push rod support frame 6 is used to constrain the radial swing of the push rod 16 and improve the reversing accuracy of the valve core assembly.

[0030] The valve core assembly includes a first valve plate 7 (a rigid valve plate in this embodiment), a second valve plate 9 (a flexible valve plate in this embodiment), and an elastic connector 13. The first valve plate 7 (with a first valve plate sealing ring 8 on the side facing the incinerator 14) serves as the outer support, and the second valve plate 9 (with a second valve plate sealing ring 10 on the side facing the incinerator 14) is coaxially nested with the first valve plate 7 through the elastic connector 13, forming a split valve core assembly. The first valve plate 7 is used to resist airflow impact and high-temperature erosion; the second valve plate 9 is used to compensate for the thermal deformation of the first valve plate 7; and the elastic connector 13 is used to absorb impact vibration and reduce wear on the sealing surface.

[0031] The sealing assembly includes a first sealing groove 11 corresponding to the first valve plate sealing ring 8 and a second sealing groove 12 corresponding to the second valve plate sealing ring 10. The first sealing groove 11 (rigid seal) and the second sealing groove 12 (flexible seal) are disposed within the vent 15 and respectively adapt to the valve core double valve plates, and are modularly connected to the valve core assembly via slots. The first sealing groove 11 (rigid seal) is used to resist high temperature impact and particle erosion, forming the main seal; the second sealing groove 12 (flexible seal) is used to compensate for small gaps, forming a secondary seal.

[0032] This utility model's centering compensation graded sealing device ensures reliable sealing. The fitting structure of the double sealing groove (outer rigid groove + inner flexible groove) and the double valve plate (rigid valve plate nested within a flexible valve plate) reduces the leakage rate and solves the gap problem of traditional single-groove seals. It also extends the service life. The elastic structure located between the rigid and flexible valve plates can absorb vibration. Combined with high-temperature resistant materials, it extends the valve core's life and avoids the cracking caused by thermal deformation of traditional integral valve cores (such as warping of traditional valve cores). It also ensures stable operation. The centering expansion joint 1 is distributed radially along the valve core and, in conjunction with the guide groove of the centering support frame 2, controls the radial offset, which is far superior to the error of traditional non-centering structures.

[0033] The above description of the embodiments is provided to enable those skilled in the art to understand and use the present invention. It will be apparent to those skilled in the art that various modifications can be easily made to these embodiments, and the general principles described herein can be applied to other embodiments without inventive effort. Therefore, the present invention is not limited to the above embodiments, and any improvements and modifications made by those skilled in the art based on the disclosure of the present invention without departing from the scope of the present invention should be within the protection scope of the present invention.

Claims

1. A centering compensation stepped seal arrangement, characterized by, include: The centering mechanism is a plurality of such mechanisms, which are arranged around the air vents of the incinerator. A sealing mechanism, the position of which corresponds to the air vent of the incinerator; wherein The centering mechanism includes: A centering expansion joint is installed on the incinerator; A centering support frame is provided on the incinerator; The centering fork has its tail end inserted through the centering support frame and connected to the centering telescopic device, with the functional end of the centering fork facing the air hole.

2. The compensation for misalignment staged seal arrangement of claim 1, wherein, The number of centering mechanisms is three, and the three centering mechanisms are evenly distributed at 120° around the air holes of the incinerator.

3. The compensation for misalignment staged seal arrangement of claim 2, wherein, The centering fork has a Y-shaped structure.

4. The compensating aligned graded seal of claim 3, wherein, The sealing mechanism includes: lift valve support seat; A sealing expansion joint, wherein the sealing expansion joint is mounted on the lifting valve support seat; A push rod support frame is provided on the lifting valve support seat, and the push rod of the sealing expansion joint passes through the push rod support frame; A valve core assembly, wherein the valve core assembly is disposed at the end of the push rod; A sealing assembly is disposed within the air hole, and the valve core assembly corresponds to the sealing assembly.

5. The compensation for misalignment staged seal arrangement of claim 4, wherein, The valve core assembly includes: A first valve plate is disposed at the end of the push rod, and a first valve plate sealing ring is provided on the side of the first valve plate facing the incinerator; A second valve plate is connected to the first valve plate via a connector, and a second valve plate sealing ring is provided on the side of the second valve plate facing the incinerator; wherein The first valve plate and the second valve plate are coaxial.

6. The centering compensation graded sealing device according to claim 5, characterized in that, The sealing assembly includes: The first sealing groove is disposed in the air hole and corresponds to the sealing ring of the first valve plate. A second sealing groove is disposed within the air hole, and the second sealing groove corresponds to the sealing ring of the second valve plate; wherein... The first sealing groove is coaxial with the second sealing groove.

7. The compensation for misalignment staged seal of claim 6, wherein, The connector is an elastic connector.

8. The compensation for misalignment staged seal of claim 7, wherein, The first valve plate is a rigid valve plate.

9. The compensation for misalignment staged seal of claim 8, wherein, The second valve plate is a flexible valve plate.

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