RTO sealing valve seat

Abstract

The utility model discloses an RTO sealing valve seat, which belongs to the field of valves. The seat is installed on the air outlet of the RTO heat storage chamber, and is characterized in that it comprises an annular body, a fixing ring is arranged on the outer edge of the annular body, one end of the annular body is set as a valve port, an elastic sealing collar is sleeved on the valve port, the elastic sealing collar is a U-shaped cross-section structure, and the elastic sealing collar is fixed on the valve port by a clamp. The utility model realizes efficient sealing with the valve plate, protects the valve port, and facilitates the replacement of the sealing structure.

Description

Technical Field

[0001] The utility model belongs to the field of valves, and in particular relates to an RTO sealing valve seat. Background Art

[0002] In the waste gas treatment equipment manufacturing industry, valves are installed between the heat storage chambers of the regenerative thermal incinerator to switch the air intake, air outlet or backblowing of different heat storage chambers. The structure of the valve used for RTO sealing generally includes a valve seat and a valve plate for sealing the valve seat valve port. In the sealed state, the valve plate directly covers the valve port to achieve the sealing of the valve port in the form of a hard seal.

[0003] Conventional valve seats, such as Figure 1 As shown, its structure includes an annular body 1, and a fixing ring 2 is arranged on the outer edge of the annular body 1. The fixing ring 2 is welded to the air outlet of the heat storage chamber to achieve the installation of the valve seat. After the welding is completed, an anti-corrosion layer will be laid on both sides of the fixing ring 2, and only a small section of the annular body is exposed as a valve port, which is sealed with the valve plate. However, due to certain deformation or errors during the valve installation process, the valve port flatness of the valve seat that is finally installed will be problematic. During the hard sealing process, the valve plate and the valve port cannot be completely fitted, resulting in leakage. Therefore, the prior art improves the traditional valve seat by adding a sealing ring 10 to the valve port to solve the problem of insufficient valve port flatness and achieve efficient sealing. However, this structure also has some problems, such as the need to thicken the annular body 1 to meet the requirements of the embedded sealing ring 10, which leads to an increase in the cost of the valve seat. At the same time, due to the high corrosiveness of RTO flue gas, the valve port is prone to corrosion, which makes it difficult to replace and repair the sealing ring 10, inconvenient to replace the sealing ring, and difficult to maintain the equipment. After long-term use, it needs to be replaced as a whole like the traditional valve seat. Summary of the invention

[0004] The purpose of the utility model is to overcome the deficiencies of the above-mentioned technology and provide an RTO sealing valve seat, which can achieve efficient sealing with the valve plate, protect the valve port, and facilitate the replacement of the sealing structure.

[0005] In order to achieve the above utility model purpose, the technical solution adopted by the utility model is:

[0006] An RTO sealing valve seat is installed on the air outlet of the RTO heat storage chamber, characterized in that it includes an annular body, a fixing ring is arranged on the outer edge of the annular body, one end of the annular body is set as a valve port, an elastic sealing ring is sleeved on the valve port, the elastic sealing ring is a U-shaped cross-section structure, and the elastic sealing ring is fixed to the valve port by a clamp.

[0007] A further improvement of the utility model is that the fixing ring is welded on the outer wall of the air outlet of the RTO heat storage chamber, and anti-corrosion layers are laid on both sides of the fixing ring. The anti-corrosion layers not only fix the valve seat, but also protect the outer wall of the annular body of the valve seat.

[0008] A further improvement of the utility model is that a circle of annular grooves is provided on the inner wall of the valve port, and an annular protrusion which is adapted to be connected to the annular groove is formed on the inner side of the elastic sealing ring. The annular protrusion is interference fit with the annular groove. When the elastic sealing ring is sleeved on the valve port, on the one hand, the rubber ring on the outer wall of the valve port is fixed by a clamp, and on the other hand, the annular protrusion of the elastic sealing ring is clamped into the annular groove to fix the elastic sealing ring on the inner wall of the valve port. The combination of the two ensures that the elastic sealing ring is firmly fixed to prevent it from falling off.

[0009] A further improvement of the utility model lies in that the elastic sealing ring is a silicone rubber sealing ring.

[0010] A further improvement of the utility model is that the clamp is composed of two semicircular half-hoop bodies, and one end of the two half-hoop bodies is hingedly connected, and the other end is fastened and connected by bolts.

[0011] Beneficial effects of the utility model:

[0012] The utility model provides an elastic sealing ring with a U-shaped cross-section structure, which can, on the one hand, achieve a seal with the valve plate and solve the problem of insufficient flatness of the valve port and poor sealing effect caused by welding; on the other hand, it plays a protective role on the valve port and can prevent the end of the valve port from being corroded, thereby causing the defect of overall replacement; at the same time, it is easy to replace and convenient to install and disassemble. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 Schematic diagram of the structure of a traditional valve seat.

[0014] Figure 2 It is a structural schematic diagram of a valve seat in the prior art.

[0015] Figure 3 It is a structural schematic diagram of the utility model.

[0016] Figure 4 for Figure 3 Cross-sectional view along AA direction.

[0017] In the figure: an annular body 1, a fixing ring 2, a valve port 3, an elastic sealing collar 4, a clamp 5, an anti-corrosion layer 6, an annular groove 7, an annular protrusion 8, a half hoop body 9, and a sealing ring 10. DETAILED DESCRIPTION

[0018] The technical solution of the utility model is further described in detail below through specific embodiments and in conjunction with the accompanying drawings:

[0019] like Figure 1 As shown, the traditional valve seat structure includes: an annular body 1, a fixing ring 2 is arranged on the outer edge of the annular body 1, the fixing ring 2 is welded to the outer wall of the air outlet of the RTO heat storage chamber, and anti-corrosion layers 6 are laid on both sides of the fixing ring 2.

[0020] like Figure 2 As shown, the valve seat structure of the prior art includes: an annular body 1, a fixing ring 2 is arranged on the outer edge of the annular body 1, one end of the annular body 1 is set as a valve port 3, an annular groove is opened on the end surface of the valve port 3, a sealing ring 10 is installed in the groove, the fixing ring 2 is welded to the outer wall of the air outlet of the RTO heat storage chamber, and anti-corrosion layers 6 are laid on both sides of the fixing ring 2.

[0021] like Figure 3-4 As shown, the utility model provides an RTO sealing valve seat, which is installed on the air outlet of the RTO heat storage chamber, and includes an annular body 1. A fixing ring 2 is arranged on the outer edge of the annular body 1. One end of the annular body 1 is set as a valve port 3. An elastic sealing collar 4 is sleeved on the valve port 3. The elastic sealing collar 4 is a U-shaped cross-section structure, and the elastic sealing collar 4 is fixed on the valve port 3 by a clamp 5.

[0022] The elastic sealing ring 4 is a strip structure. When installing it, the U-shaped mouth is inserted into the valve port 3, and after wrapping around it, the ends are connected. This design is because the size of the valve port 3 is not completely fixed. The elastic sealing ring 4 of the corresponding length can be cut according to the actual working conditions, which makes installation more convenient and quick.

[0023] Specifically, the fixing ring 2 is welded on the outer wall of the air outlet of the RTO heat storage chamber, and an anti-corrosion layer 6 is laid on both sides of the fixing ring 2. The anti-corrosion layer 6 not only fixes the valve seat, but also protects the outer wall of the valve seat annular body 1.

[0024] Specifically, a circle of annular grooves 7 are provided on the inner wall of the valve port 3, and an annular protrusion 8 which is adapted to be connected to the annular groove 7 is formed on the inner side of the elastic sealing ring 4. The annular protrusion 8 is interference fit with the annular groove 7. When the elastic sealing ring 4 is sleeved on the valve port 3, on the one hand, the rubber ring on the outer wall of the valve port 3 is fixed by the clamp 5, and on the other hand, the annular protrusion 8 of the elastic sealing ring 4 is inserted into the annular groove 7 to fix the elastic sealing ring 4 on the inner wall of the valve port 3. The combination of the two ensures that the elastic sealing ring 4 is firmly fixed to prevent it from falling off.

[0025] Specifically, the elastic sealing ring 4 is a silicone rubber sealing ring.

[0026] Specifically, the clamp 5 is composed of two semicircular half-hoop bodies 9, and one end of the two half-hoop bodies 9 is hingedly connected, and the other end is fastened by bolts.

[0027] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention without departing from the principles and purpose of the present invention. Any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. An RTO sealing valve seat, which is installed on the air outlet of the RTO heat storage chamber, characterized in that: It includes an annular body, a fixing ring is arranged on the outer edge of the annular body, one end of the annular body is set as a valve port, an elastic sealing ring is sleeved on the valve port, the elastic sealing ring is a U-shaped cross-section structure, and the elastic sealing ring is fixed on the valve port by a clamp.

2. The RTO sealing valve seat according to claim 1, characterized in that: The fixing ring is welded on the outer wall of the air outlet of the RTO heat storage chamber, and anti-corrosion layers are laid on both sides of the fixing ring.

3. The RTO sealing valve seat according to claim 1, characterized in that: An annular groove is arranged on the inner wall of the valve port, and an annular protrusion which is matched and connected with the annular groove is formed on the inner side of the elastic sealing ring, and the annular protrusion is interference-fitted with the annular groove.

4. The RTO sealing valve seat according to claim 1, characterized in that: The elastic sealing ring is a silicone rubber sealing ring.

5. The RTO sealing valve seat according to claim 1, characterized in that: The clamp consists of two semicircular half-hoop bodies, one end of the two half-hoop bodies is hingedly connected, and the other end is fastened and connected by bolts.

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