CN216867514U - Double-seal poppet valve for regenerative thermal oxidizer and regenerative catalytic oxidizer - Google Patents
Double-seal poppet valve for regenerative thermal oxidizer and regenerative catalytic oxidizer Download PDFInfo
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- CN216867514U CN216867514U CN202220045127.5U CN202220045127U CN216867514U CN 216867514 U CN216867514 U CN 216867514U CN 202220045127 U CN202220045127 U CN 202220045127U CN 216867514 U CN216867514 U CN 216867514U
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Abstract
The utility model discloses a double-seal poppet valve for a heat accumulating type thermal oxidizer and a heat accumulating type catalytic oxidizer, and relates to the technical field of waste gas treatment equipment.A gas seal gas inlet pipe penetrates through the outer wall of a poppet valve body; the hard sealing piece is fixed on the inner top wall of the lifting valve body, the hard sealing piece is of an annular groove-shaped metal structure, an annular groove in the hard sealing piece is an air groove, the inner end of the air sealing air inlet pipe penetrates through the outer wall of the hard sealing piece and then is communicated with the air groove, the outer end of the air sealing air inlet pipe is an air sealing air inlet pipe opening, and the air sealing air inlet pipe opening is exposed outside the lifting valve body; the soft sealing member of rubber sets up the diapire at hard sealing member, and with promoting the sealed setting of valve core activity conflict. Through the rubber soft seal and the compressed gas double seal, the leakage of the poppet valve is below 0.1 percent, so that the overall treatment efficiency of the RTO/RCO can reach more than 99.9 percent.
Description
Technical Field
The utility model relates to the technical field of waste gas treatment equipment, in particular to a double-seal poppet valve for a heat accumulating type thermal oxidizer and a heat accumulating type catalytic oxidizer.
Background
Organic waste gases are common pollutants. The organic waste gas not only causes harm to the environment and human health, but also is one of the precursors of PM 2.5. Organic waste gas of medium or low concentration, e.g. 10000mg/m3The organic waste gas is preferably treated by an oxidation treatment.
Oxidation is the most thorough organic waste gas treatment technology. The heat accumulating type thermal oxidation (RTO) and the heat accumulating type catalytic oxidation (RCO) adopt a ceramic heat accumulator for heat recovery, and the heat of the purified gas after oxidation treatment is stored for heating the intake air, so that the energy utilization efficiency is improved, and the operating cost is reduced. Regenerative thermal oxidation RTO and regenerative catalytic oxidation RCO require periodic changes of inlet and outlet gases. The change can be achieved in two ways, one is a rotating mechanism, and the other is achieved through a switching valve. The switching valve may take the form of a butterfly valve or a poppet valve, depending on the form.
Poppet valves are moving parts that require effective sealing to prevent gas leakage. A rubber soft seal and a metal hard seal associated therewith are typically employed. Because the rubber has certain leakage, the valve is not closed tightly, the waste gas does not enter the RTO/RCO for treatment and leaks to the pipeline to be discharged to a chimney, and the treatment efficiency of the whole set of RTO/RCO treatment facility is reduced. The leakage rate of RTO/RCO is difficult to be reduced to below 0.2% by adopting a rubber soft seal and a metal hard seal. Therefore, the overall organic waste gas treatment efficiency of the traditional RTO/RCO device in the form of a switching valve is not more than 99.8%.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a double-seal poppet valve for a regenerative thermal oxidizer and a regenerative catalytic oxidizer, aiming at the defects and shortcomings of the prior art, the leakage of the poppet valve is below 0.1% through a rubber soft seal and a compressed gas double seal, so that the overall treatment efficiency of RTO/RCO can reach more than 99.9%.
In order to achieve the purpose, the utility model adopts the following technical scheme: it comprises a poppet valve core, a poppet valve body and a cylinder; the lifting valve core is movably arranged in the lifting valve body up and down, the lifting valve core is connected with the output end of the air cylinder by utilizing the valve rod, the air cylinder is fixed on the air cylinder sealing plate top plate by utilizing the air cylinder connecting plate, the air cylinder sealing plate top plate is fixed on the air cylinder sealing plate, and the air cylinder sealing plate is fixed on the lifting valve body; it also includes:
the gas sealing gas inlet pipe penetrates through the outer wall of the lifting valve body;
the hard sealing element is fixed on the inner top wall of the lifting valve body, the hard sealing element is of an annular groove-shaped metal structure, an annular groove in the hard sealing element is an air groove, the inner end of the air sealing air inlet pipe penetrates through the outer wall of the hard sealing element and then is communicated with the air groove, the outer end of the air sealing air inlet pipe is an air sealing air inlet pipe opening, and the air sealing air inlet pipe opening is exposed outside the lifting valve body;
the rubber soft sealing element is arranged on the bottom wall of the hard sealing element and is in movable abutting and sealing arrangement with the lifting valve core.
Preferably, a guide rod is movably arranged in the peripheral wall of the lifting valve core in a penetrating manner, and the upper end and the lower end of the guide rod are fixed on the inner wall of the lifting valve body by utilizing a guide rod fixing sleeve.
Preferably, an access cover plate is hinged on the opening of the side wall of the lifting valve body.
Preferably, cylinder frame angle steel is arranged at the corners of the cylinder sealing plate.
Preferably, a sealing shaft sleeve is arranged at the connecting position of the output end of the air cylinder and the valve rod, the sealing shaft sleeve is embedded in the bottom wall of the lifting valve body, and a sealing gland penetrating through the air cylinder is fixed on the lower port of the sealing shaft sleeve.
Compared with the prior art, the utility model has the beneficial effects that: the utility model provides a double-seal poppet valve for a heat accumulating type thermal oxidizer and a heat accumulating type catalytic oxidizer, and the leakage of the poppet valve is below 0.1 percent through rubber soft seal and compressed gas double seal, so that the overall treatment efficiency of RTO/RCO can reach above 99.9 percent.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Fig. 2 is a front view of the present invention.
Fig. 3 is a sectional view taken along line a-a in fig. 2.
Fig. 4 is a schematic view of the structure of the rubber soft seal in the present invention.
Description of reference numerals:
the cylinder sealing plate comprises a cylinder connecting plate 1, a cylinder sealing plate top plate 2, cylinder frame angle steel 3, a sealing gland 4, a sealing shaft sleeve 5, a lifting valve core 6, a lifting valve body 7, a gas sealing gas inlet pipe orifice 8, a gas sealing gas inlet pipe 9, a gas groove 10, a hard sealing element 11, a rubber soft sealing element 12, an overhauling cover plate 13, a guide rod 14, a guide rod fixing sleeve 15, a cylinder sealing plate 16 and a cylinder 17.
Detailed Description
The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings, and the preferred embodiments in the description are only examples, and all other embodiments obtained by those skilled in the art without any inventive work belong to the protection scope of the present invention.
As shown in fig. 1 to 4, the following technical solutions are adopted in the present embodiment: it comprises a poppet 6, a poppet body 7 and a cylinder 17; the lifting valve core 6 is movably arranged in the lifting valve body 7 up and down, the lifting valve core 6 is connected with the output end of the air cylinder 17 through the valve rod, the air cylinder 17 is fixed on the air cylinder sealing plate top plate 2 through the air cylinder connecting plate 1, the air cylinder sealing plate top plate 2 is arranged in a cuboid structure and is fixed on the air cylinder sealing plate 16, and the air cylinder sealing plate 16 is fixed on the lifting valve body 7; it also includes:
the gas sealing inlet pipe 9 is arranged in the outer wall of the lifting valve body 7 in a penetrating manner;
the hard sealing piece 11 is fixed on the inner top wall of the lifting valve body 7, the hard sealing piece 11 is of an annular groove-shaped metal structure, the metal is steel, copper alloy or aluminum alloy, the annular groove in the hard sealing piece 11 is an air groove 10, the inner end of the air sealing air inlet pipe 9 penetrates through the outer wall of the hard sealing piece 11 and then is communicated with the air groove 10, the outer end of the air sealing air inlet pipe 9 is an air sealing air inlet pipe opening 8, and the air sealing air inlet pipe opening 8 is exposed outside the lifting valve body 7;
the soft rubber sealing element 12 is made of fluororubber or silicon rubber, is 1-10mm thick, is arranged on the bottom wall of the hard sealing element 11, and is movably abutted and sealed with the poppet valve element 6.
Preferably, a guide rod 14 is movably arranged in the peripheral wall of the poppet 6, and the upper end and the lower end of the guide rod 14 are fixed on the inner wall of the poppet 7 by a guide rod fixing sleeve 15.
Preferably, an access cover 13 is hinged on the side wall opening of the lift valve body 7.
Preferably, cylinder frame angle steel 3 is arranged on the four corners of the cylinder closing plate 16.
Preferably, a sealing shaft sleeve 5 is arranged at the connecting position of the output end of the air cylinder 17 and the valve rod, the sealing shaft sleeve 5 is embedded in the bottom wall of the lifting valve body 7, and a sealing gland 4 penetrating through the air cylinder 17 is fixed on the lower port of the sealing shaft sleeve 5.
When the lifting valve is used, the cylinder 17 drives the lifting valve core 6 to move up and down under the instruction of the control system, when the lifting valve core 6 rises to the bottom of the rubber soft sealing element 2, the lifting valve core 6 is in close contact with the rubber soft sealing element 2, the lifting valve core 6 and the hard sealing element 11 form a closed annular gas space, compressed gas (air, nitrogen or carbon dioxide) is input into the gas groove 10 through the gas sealing gas inlet pipe 9, the gas pressure of the compressed gas is not less than 5kPa, the gas pressure is kept in the gas groove 10, and gas leakage in the valve is further prevented.
After adopting above-mentioned structure, this embodiment's beneficial effect is as follows: this embodiment provides a double seal poppet valve for regenerative thermal oxidizer and regenerative catalytic oxidizer, through the soft seal of rubber and compressed gas double seal, the leakage of poppet valve is below 0.1% to can make RTO/RCO's whole treatment effeciency can reach more than 99.9%.
It will be appreciated by those skilled in the art that modifications and equivalents may be made to the embodiments described above, and that various modifications, equivalents, improvements and the like may be made without departing from the spirit and scope of the utility model.
Claims (5)
1. A double-seal poppet valve for regenerative thermal oxidizers and regenerative catalytic oxidizers comprises a poppet valve (6), a poppet valve body (7) and a cylinder (17); the lifting valve core (6) is movably arranged in the lifting valve body (7) up and down, the lifting valve core (6) is connected with the output end of the air cylinder (17) through a valve rod, the air cylinder (17) is fixed on the air cylinder sealing plate top plate (2) through an air cylinder connecting plate (1), the air cylinder sealing plate top plate (2) is fixed on an air cylinder sealing plate (16), and the air cylinder sealing plate (16) is fixed on the lifting valve body (7); the method is characterized in that: it also includes:
the gas sealing inlet pipe (9), the gas sealing inlet pipe (9) penetrates through the outer wall of the lifting valve body (7);
the hard sealing piece (11) is fixed on the inner top wall of the lifting valve body (7), the hard sealing piece (11) is of an annular groove-shaped metal structure, an annular groove in the hard sealing piece (11) is an air groove (10), the inner end of the air sealing air inlet pipe (9) penetrates through the outer wall of the hard sealing piece (11) and then is communicated with the air groove (10), the outer end of the air sealing air inlet pipe (9) is an air sealing air inlet pipe opening (8), and the air sealing air inlet pipe opening (8) is exposed outside the lifting valve body (7);
the rubber soft sealing element (12) is arranged on the bottom wall of the hard sealing element (11) and is in movable abutting and sealing arrangement with the lifting valve core (6).
2. The dual seal poppet valve for a regenerative thermal oxidizer and a regenerative catalytic oxidizer of claim 1, wherein: a guide rod (14) is movably arranged in the peripheral wall of the lifting valve core (6) in a penetrating mode, and the upper end and the lower end of the guide rod (14) are fixed on the inner wall of the lifting valve body (7) through a guide rod fixing sleeve (15).
3. The dual seal poppet valve for a regenerative thermal oxidizer and a regenerative catalytic oxidizer of claim 1, wherein: an access cover plate (13) is hinged to an opening in the side wall of the lifting valve body (7).
4. The dual seal poppet valve for a regenerative thermal oxidizer and a regenerative catalytic oxidizer of claim 1, wherein: and cylinder frame angle steel (3) is arranged at the corners of the cylinder sealing plate (16).
5. The dual seal poppet valve for a regenerative thermal oxidizer and a regenerative catalytic oxidizer of claim 1, wherein: the connecting position department of the output of cylinder (17) and valve rod be equipped with sealed axle sleeve (5), this sealed axle sleeve (5) inlay establishes in the diapire that promotes valve body (7), be fixed with on the lower port of this sealed axle sleeve (5) and run through cylinder (17) gland (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220045127.5U CN216867514U (en) | 2022-01-10 | 2022-01-10 | Double-seal poppet valve for regenerative thermal oxidizer and regenerative catalytic oxidizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220045127.5U CN216867514U (en) | 2022-01-10 | 2022-01-10 | Double-seal poppet valve for regenerative thermal oxidizer and regenerative catalytic oxidizer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216867514U true CN216867514U (en) | 2022-07-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220045127.5U Active CN216867514U (en) | 2022-01-10 | 2022-01-10 | Double-seal poppet valve for regenerative thermal oxidizer and regenerative catalytic oxidizer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216867514U (en) |
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2022
- 2022-01-10 CN CN202220045127.5U patent/CN216867514U/en active Active
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