CN210800130U - Multi-channel low-leakage gas continuous distribution rotary valve - Google Patents
Multi-channel low-leakage gas continuous distribution rotary valve Download PDFInfo
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- CN210800130U CN210800130U CN201920742346.7U CN201920742346U CN210800130U CN 210800130 U CN210800130 U CN 210800130U CN 201920742346 U CN201920742346 U CN 201920742346U CN 210800130 U CN210800130 U CN 210800130U
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Abstract
The utility model discloses a multi-channel low-leakage gas continuous distribution rotary valve, wherein the upper static cavity comprises a first static cavity and a second static cavity, the second static cavity is arranged in the first static cavity, and the gas outlet of the second static cavity is connected with the gas outlet of the first static cavity through a sealing pipeline; the rotor comprises a rotor reducing part, a rotary round table and a rotating shaft, the upper circumference and the lower circumference of the rotary round table are respectively connected with the upper circumferences of the first static cavity and the second static cavity, the inside of the rotary round table is divided into 4 sectors, an air inlet hole is formed in the side wall of the round table of the first rotary valve sector, an air outlet hole is formed in the bottom wall of the second rotary valve sector, and a high-pressure gas through hole is formed in the top wall of the third sector; the variable diameter of the rotor is connected with the edge of a through hole at the bottom of the second static cavity, and a high-pressure gas channel communicated with the third sector is arranged on the variable diameter rotor; the lower static cavity is a cylinder with an open top, the top of the lower static cavity is connected with the edge of the through hole at the bottom of the second static cavity, and the side wall of the lower static cavity is provided with a high-pressure air inlet. The utility model discloses only have a drive disk assembly, reduced the fault rate.
Description
Technical Field
The invention relates to the field of environmental engineering waste gas treatment, in particular to a multi-channel low-leakage gas continuous distribution rotary valve.
Background
With the development of economy, the national treatment requirements on Volatile Organic Compounds (VOCs) are increasingly strict, and the general simple treatment technology cannot meet the required exhaust emission standard. In recent years, regenerative thermal incineration (RTO) has been widely used in many industrial fields where VOCs are produced due to its high pollutant treatment efficiency.
The principle of RTO technique is constantly switching the direction of admitting air of waste gas, utilizes the heat accumulation ability of heat accumulator, and the heat that produces when decomposing waste gas is accumulated in the heat accumulator, then through the switching-over of waste gas, gives the waste gas that newly gets into RTO with heat transfer for waste gas temperature rises to reaction temperature, thereby effectual energy saving consumes. The traditional RTO technology mainly adopts 3 regenerators and 6 switching valves to realize the functions, the switching valves generally act once every 2 minutes, and most of the switching valves adopt pneumatic actuators. However, this method has three problems that are difficult to avoid due to its structural features. Firstly, the gas pressure fluctuates greatly when the valve is opened and closed, and the RTO is not suitable for being applied to a production workshop sensitive to pressure fluctuation. Secondly, when the valve is switched, waste gas short circuit can be caused in a short time, and partial waste gas which is not processed can be directly discharged, so that the discharge exceeds the standard. In addition, because there are 6 switching valves and the action is frequent, the failure rate of the mode is high, and the normal use of the equipment is influenced.
Disclosure of Invention
The invention aims to provide a multi-channel low-leakage gas continuous distribution rotary valve.
The technical solution for realizing the purpose of the invention is as follows: a multi-channel low-leakage gas continuous distribution rotary valve comprises an upper static cavity, a lower static cavity and a rotor, wherein the upper static cavity comprises a first static cavity and a second static cavity which are cylinders with openings at the tops, the second static cavity is arranged in the first static cavity, and an airflow channel is formed between the two cavities; a first static cavity air inlet and a first static cavity air outlet are formed in the side wall of the first static cavity, a second static cavity air outlet is formed in the side wall of the second static cavity, and the second static cavity air outlet is connected with the first static cavity air outlet through a sealing pipeline;
the rotor comprises a rotor reducing part, a rotary round table and a rotating shaft, the upper part of the rotating shaft is connected with the rotary round table and the rotor reducing part, the lower part of the rotating shaft passes through a through hole at the bottom of the second static cavity body, the rotary round table is positioned at the upper part of the second static cavity body, the upper and lower circumferences of the first and second static cavities are respectively connected with the upper circumference of the first and second static cavities to form a sealed cavity, a partition board is arranged in the rotary round table and divides the rotary round table into 4 sectors, wherein the 4 sectors comprise a first rotary valve sector, a second rotary valve sector and two third sectors positioned between the first rotary valve sector and the second rotary valve sector, wherein the top parts of the first rotary valve sector and the second rotary valve sector are opened, an air inlet hole is arranged on the circular truncated cone side wall of the first rotary valve sector, the bottom wall of the second rotary valve sector is provided with an air outlet, the bottom of the third sector is open, and the top wall of the third sector is provided with a high-pressure gas through hole; the rotor reducing is positioned above the second static cavity and connected with the edge of a through hole at the bottom of the second static cavity, and a high-pressure gas channel is arranged at a position corresponding to the third sector and communicated with the third sector;
the lower static cavity is located below the upper static cavity and is a cylinder with an opening at the top, the top of the cylinder is connected with the edge of the through hole at the bottom of the second static cavity, the bottom wall of the cylinder is provided with a rotating shaft through hole, and the side wall of the cylinder is provided with a high-pressure air inlet.
Compared with the prior art, the invention has the remarkable advantages that: 1) the integral valve body is only provided with one transmission part of the rotor, and different air flows are continuously distributed to equipment connected with the integral valve body from multiple channels through continuous rotation of the rotor, so that the failure rate is greatly reduced; 2) high-pressure air blocking and multiple sealing measures are designed, and the leakage rate of the valve is reduced.
Drawings
Fig. 1 is a perspective view of a multi-channel low leakage gas continuous distribution rotary valve of the present invention.
FIG. 2 is a front view of the multi-channel low leakage gas continuous distribution rotary valve of the present invention.
Fig. 3 is a schematic structural diagram of the upper static cavity of the invention.
Fig. 4 is a schematic view of the structure of the rotor of the present invention.
Fig. 5 is a schematic structural diagram of the lower static cavity of the invention.
Detailed Description
The invention will be described in detail with reference to the accompanying drawings and specific embodiments.
As shown in figures 1-5, the multi-channel low-leakage gas continuous distribution rotary valve is composed of 3 parts, namely an upper static cavity, a lower static cavity and a rotor. The upper static cavity comprises a first static cavity 1 and a second static cavity 2, the first static cavity 1 and the second static cavity 2 are cylinders with openings at the tops, the second static cavity 2 is arranged in the first static cavity 1, and an airflow channel 21 is formed between the two cavities; set up first quiet cavity air inlet 4 and first quiet cavity gas outlet 9 at 1 lateral wall of first quiet cavity, set up second quiet cavity venthole at 2 lateral walls of second quiet cavity, first quiet cavity gas outlet 9 is connected through sealed tube 20 to the second quiet cavity venthole, blocks the air current and leaks.
The rotor comprises a rotor reducing hole 11, a rotary circular truncated cone 19 and a rotating shaft 14, the upper part of the rotating shaft 14 is connected with the rotary circular truncated cone 19 and the rotor reducing hole 11, the lower part of the rotating shaft passes through a through hole at the bottom of the second static cavity 2, the rotary circular truncated cone 19 is positioned at the upper part of the second static cavity 2, the upper circumference and the lower circumference of the rotary circular truncated cone are respectively connected with the upper circumferences of the first static cavity 1 and the second static cavity 2 to form a sealed cavity, a partition plate is arranged in the rotary circular truncated cone 19 to divide the rotary circular truncated cone into 4 sectors, the partition plate comprises a first rotary valve sector 6, a second rotary valve sector 7 and two third sectors 12 positioned between the first rotary valve sector 6 and the second rotary valve sector 7, wherein the top openings of the first rotary valve sector 6 and the second rotary valve sector 7 are formed, an air inlet hole is arranged on the circular truncated cone side wall of the first rotary valve sector 6, a high-pressure gas through hole is formed in the top wall of the third sector 12; the rotor reducing 11 is positioned above the second static cavity 2, is connected with the edge of a through hole at the bottom of the second static cavity 2, and is provided with a high-pressure gas channel at a position corresponding to the third sector and communicated with the third sector 12.
The lower static cavity 3 is located below the upper static cavity and is a cylinder with an open top, the top of the cylinder is connected with the edge of the through hole at the bottom of the second static cavity 2, the bottom wall of the cylinder is provided with a rotating shaft through hole, and the side wall of the cylinder is provided with a high-pressure gas inlet 10.
The working principle is as follows: the position of the first static cavity air inlet 4 is static, air flow can enter the circular arc-shaped air flow channel 21 formed by the first static cavity 1 and the second static cavity 2 through the first static cavity air inlet 4 and then enter the first rotary valve sector 6 through the rotary valve first sector air inlet 5, and the position of the first rotary valve sector 6 is changed all the time because the rotor rotates at a constant speed in a circular manner all the time, so that the air flow can be distributed to equipment connected with the rotary valve.
After the reaction, the gas flow from the apparatus connected to the invention flows into the second rotary valve sector 7, and also due to the cyclic rotation of the rotor, the position of the second rotary valve sector 7 is constantly changing, and the gas flow in the different areas of the apparatus connected to it continuously enters the second rotary valve sector 7 and then enters the second stationary chamber 2 from the second rotary valve sector outlet 8, and since the second stationary chamber 2 is stationary, the gas flow always flows out from the second stationary chamber outlet 9.
High pressure air enters the lower static cavity 3 from the high pressure air inlet 10, then enters the rotor reducing diameter 11, and then flows out from the third rotary valve sector 12. Also since the rotor is constantly making a constant circumferential rotation, the position of the third rotary valve sector 12 is constantly changing and the high pressure gas flow can be distributed to the equipment connected to the invention at a fixed rotational speed.
The shaft 14 may be formed of a special alloy high strength steel in consideration of structural stability. The partition plate inside the rotary truncated cone 19 may be made of a steel plate. The side wall and the diapire of first quiet cavity 1, the quiet cavity of second 2, the side wall and the diapire of first rotary valve sector 6, second rotary valve sector 7, the top and the lateral wall of third sector 12, go up quiet cavity and rotatory round platform 19, and first quiet cavity air inlet 4, first quiet cavity gas outlet 9 and first quiet cavity 1, high pressure gas inlet 10 and quiet cavity 3 down, sealed pipeline 20 and first quiet cavity 1, the quiet cavity of second 2 all can adopt the welding mode to be connected.
In some embodiments, the air inlet holes in the circular truncated cone side wall of the first rotary valve sector 6 and the air outlet holes in the bottom wall of the second rotary valve sector 7 may be rectangular or have other shapes.
In some embodiments, the top wall of the third sector 12 is provided with 3 circular high-pressure gas through holes, and may be provided with other shapes or numbers, and during production, the number may be adjusted according to specific application requirements.
In some embodiments, the second static cavity 2 and the bottom of the lower static cavity 3 are provided with circular rotating shaft through holes, and may have other shapes as long as the rotating shafts can pass through.
In consideration of the sealing property, in addition to the welding connection of the rotating shaft 14 with the rotor reducing diameter 11 and the upper static cavity, the three parts are manufactured into an integrated structure in some embodiments. In some embodiments, a packing seal or other forms are used, and a seal structure is arranged at the joint of the upper edge of the rotor and the upper edge of the outer wall of the first static cavity 1, the joint of the lower end of the rotary circular truncated cone 19 of the rotor and the upper edge of the second static cavity 2, the joint of the reducing diameter 11 of the rotor and the through hole at the bottom of the second static cavity 2, and the joint of the rotary valve and other equipment.
In addition, in some embodiments, the area of the first sector 6 and the second sector 7 is 5/12 of the circular area of the rotary truncated cone, and the area of the third sector 12 is 2/12 of the circular area of the rotary truncated cone, which can also be adjusted according to the specific application requirement.
The multi-channel low-leakage gas continuous distribution rotary valve can be used for continuously switching the inlet gas flow and the outlet gas flow of a rotary air preheater or a rotary thermal power incinerator, and has the advantages of reliable structure and low leakage rate. Meanwhile, the device is also suitable for any other occasions requiring continuous switching of two airflows.
Claims (10)
1. The multi-channel low-leakage gas continuous distribution rotary valve is characterized by comprising an upper static cavity, a lower static cavity (3) and a rotor, wherein the upper static cavity comprises a first static cavity (1) and a second static cavity (2), the first static cavity (1) and the second static cavity (2) are cylinders with openings at the tops, the second static cavity (2) is arranged in the first static cavity (1), and an airflow channel (21) is formed between the two cavities; a first static cavity air inlet (4) and a first static cavity air outlet (9) are arranged on the side wall of the first static cavity (1), a second static cavity air outlet is arranged on the side wall of the second static cavity (2), and the second static cavity air outlet is connected with the first static cavity air outlet (9) through a sealing pipeline (20);
the rotor comprises a rotor reducing hole (11), a rotating circular truncated cone (19) and a rotating shaft (14), the upper part of the rotating shaft (14) is connected with the rotating circular truncated cone (19) and the rotor reducing hole (11), the lower part of the rotating shaft passes through a through hole at the bottom of the second static cavity (2), the rotating circular truncated cone (19) is positioned at the upper part of the second static cavity (2), the upper and lower circumferences of the rotating circular truncated cone are respectively connected with the upper circumferences of the first static cavity (1) and the second static cavity (2) to form a sealed cavity, a partition plate is arranged inside the rotating circular truncated cone (19) and is divided into 4 sectors, the rotating circular truncated cone comprises a first rotating valve sector (6), a second rotating valve sector (7) and two third sectors (12) positioned between the first rotating valve sector (6) and the second rotating valve sector (7), wherein the top of the first rotating valve sector (6) and the second sector (7) is opened, and an air inlet is arranged on, the bottom wall of the second rotary valve sector (7) is provided with an air outlet, the bottom of the third sector (12) is open, and the top wall of the third sector (12) is provided with a high-pressure gas through hole; the rotor reducing diameter (11) is positioned above the second static cavity (2), is connected with the edge of a through hole at the bottom of the second static cavity (2), and is provided with a high-pressure gas channel at a position corresponding to the third sector and communicated with the third sector (12);
the lower static cavity (3) is located below the upper static cavity and is a cylinder with an open top, the top of the cylinder is connected with the edge of the through hole at the bottom of the second static cavity (2), the bottom wall of the cylinder is provided with a rotating shaft through hole, and the side wall of the cylinder is provided with a high-pressure air inlet (10).
2. A multi-channel low-leakage gas continuous distributing rotary valve according to claim 1, characterized in that the partition plates inside the rotary shaft (14) and the rotary truncated cone (19) are machined from steel.
3. A multi-channel low-leakage gas continuous distribution rotary valve according to claim 1, wherein the side walls and the bottom wall of the first static cavity (1) and the second static cavity (2), the side walls and the bottom wall of the first rotary valve sector (6) and the second rotary valve sector (7), the top and the side walls of the third sector (12), the upper static cavity and the rotary truncated cone (19), the first static cavity gas inlet (4), the first static cavity gas outlet (9) and the first static cavity (1), the high-pressure gas inlet (10) and the lower static cavity (3), and the sealing pipeline (20) and the first static cavity (1) and the second static cavity (2) are connected by welding.
4. A multi-channel low-leakage gas continuous distribution rotary valve according to claim 1, wherein the inlet holes on the circular truncated side wall of the first rotary valve sector (6) and the outlet holes on the bottom wall of the second rotary valve sector (7) are of rectangular configuration.
5. A multi-channel low-leakage gas continuous distributing rotary valve according to claim 1, characterized in that 3 circular high-pressure gas through holes are provided on the top wall of the third sector (12).
6. A multi-channel low-leakage gas continuous distributing rotary valve according to claim 1, characterized in that the second static chamber (2) and the bottom of the lower static chamber (3) are provided with circular rotating shaft through holes.
7. A multi-channel low-leakage gas continuous distribution rotary valve according to claim 1, characterized in that the rotary shaft (14) is welded with the rotor reducing diameter (11) and the upper static cavity.
8. A multi-channel low-leakage gas continuous distribution rotary valve according to claim 1, characterized in that the rotary shaft (14) and the rotor reducing (11) and the upper static cavity are of an integrated structure.
9. A multi-channel low-leakage gas continuous distribution rotary valve according to claim 1, wherein a sealing structure is arranged at the joint of the upper edge of the rotor and the upper edge of the outer wall of the first static cavity (1), the joint of the lower end of the rotary circular table (19) and the upper edge of the second static cavity (2), the joint of the rotor reducing diameter (11) and the bottom through hole of the second static cavity (2), and the joint of the rotary valve and other equipment.
10. A multi-channel low-leakage gas continuous distribution rotary valve according to claim 1, wherein the area of the first rotary valve sector (6) and the second rotary valve sector (7) is 5/12 of the circular area of the rotary truncated cone, and the area of the third sector (12) is 2/12 of the circular area of the rotary truncated cone.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920742346.7U CN210800130U (en) | 2019-05-22 | 2019-05-22 | Multi-channel low-leakage gas continuous distribution rotary valve |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920742346.7U CN210800130U (en) | 2019-05-22 | 2019-05-22 | Multi-channel low-leakage gas continuous distribution rotary valve |
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| CN210800130U true CN210800130U (en) | 2020-06-19 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114754158A (en) * | 2022-05-19 | 2022-07-15 | 力同环保机械（上海）有限公司 | RTO diverter valve |
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2019
- 2019-05-22 CN CN201920742346.7U patent/CN210800130U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114754158A (en) * | 2022-05-19 | 2022-07-15 | 力同环保机械（上海）有限公司 | RTO diverter valve |
| CN114754158B (en) * | 2022-05-19 | 2024-01-30 | 力同环保机械（上海）有限公司 | RTO switching valve |
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