CN112610722A - High-temperature-resistant and corrosion-resistant multi-channel quick switching valve - Google Patents
High-temperature-resistant and corrosion-resistant multi-channel quick switching valve Download PDFInfo
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- CN112610722A CN112610722A CN202011464470.5A CN202011464470A CN112610722A CN 112610722 A CN112610722 A CN 112610722A CN 202011464470 A CN202011464470 A CN 202011464470A CN 112610722 A CN112610722 A CN 112610722A
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- Prior art keywords
- valve
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- valve body
- temperature
- corrosion
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
- F16K11/02—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit
- F16K11/04—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only lift valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/02—Construction of housing; Use of materials therefor of lift valves
- F16K27/0236—Diaphragm cut-off apparatus
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/08—Guiding yokes for spindles; Means for closing housings; Dust caps, e.g. for tyre valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
- F16K31/126—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a diaphragm, bellows, or the like
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Multiple-Way Valves (AREA)
Abstract
The invention relates to a high-temperature-resistant and corrosion-resistant multi-channel quick switching valve which sequentially comprises a valve cover, a valve body and a valve base from top to bottom, wherein a PTFE upper diaphragm is arranged above the valve body, a PTFE lower diaphragm is arranged below the valve body, a driving air interface A is arranged in the circumferential direction of the valve cover, a plurality of sample air interfaces are uniformly arranged in the circumferential direction of the valve body, and a driving air interface B is arranged in the circumferential direction of the valve base. The valve base is provided with a positioning pin for fixing the valve body and the valve cover. The valve cover, the valve body and the valve base are all made of temperature-resistant and corrosion-resistant materials. Compared with the prior art, the invention has the advantages that: the upper and lower diaphragms are controlled to be respectively compressed by driving air to flow in from different interfaces, so that the switching of air paths is realized. The valve has no mechanical moving part, no mechanical abrasion and long service life; the structure is simple, the diaphragm is temperature resistant and corrosion resistant, and the maintenance and cleaning are convenient; the gas circuit switching stroke is small, no delay exists, the gas circuit switching has no rigid impact, and no influence is caused on the analysis and operation of the instrument.
Description
Technical Field
The invention relates to the field of multi-channel switching valves, in particular to a high-temperature-resistant and anti-corrosion multi-channel quick switching valve.
Background
The online monitoring of volatile organic compounds in the environmental protection online monitoring industry is mainly carried out by using an online gas chromatograph. The multichannel switching valve is one of the core components of an online gas chromatograph, most of domestic chromatographic manufacturers use a rotor type multichannel valve driven by a rotary air cylinder, the number of moving components of the valve is large, the matching tolerance of parts is increased after the parts are abraded due to multiple actions, and the service life is continuously shortened. The structure is complicated, the maintenance is difficult, and the cost is high. Because the cylinder driving the valve body rotor to rotate is not resistant to high temperature, and the valve body must be arranged in a high-temperature environment, difficulty is caused to the installation of the valve, the valve body must be fixed firstly, then heat preservation treatment is carried out, and finally the cylinder is installed. The valve performs switching by rotating the rotor by a certain angle to change the flow direction of the gas path, which causes the hard impact of the gas path in the switching process, which inevitably affects the continuous and reliable analysis operation of the chromatograph.
The disadvantages are as follows:
1. the valve has more moving parts, the fit tolerance of parts is gradually increased after the parts are abraded due to multiple actions, and the service life is short;
2. the valve body and the cylinder have complex structures, are difficult to maintain and have high cost;
3. rigid impact is difficult to avoid by a gas circuit in the switching process, the movement stroke of a rotor is long, and certain delay exists in switching, so that continuous and reliable analysis and operation of an instrument are inevitably influenced;
4. the installation is difficult, and only valve body part is able to bear the temperature, must dismantle during the use, must fix the valve body earlier, and the heat preservation is handled again, installs the cylinder again at last.
Disclosure of Invention
The invention aims to solve the technical problems and provides a high-temperature-resistant and anti-corrosion multi-channel quick switching valve.
In order to solve the technical problems, the technical scheme provided by the invention is as follows: the utility model provides a high temperature resistant anticorrosive type multichannel fast switch valve, includes valve gap, valve body and valve base down in proper order from last, the top of valve body be equipped with PTFE and go up the diaphragm, the below is equipped with diaphragm under the PTFE, the circumferencial direction of valve gap be equipped with and drive gas interface A, the valve body on the circumferencial direction evenly be equipped with a plurality of appearance gas interfaces, the circumferencial direction of valve base be equipped with and drive gas interface B.
Furthermore, the valve base is provided with a positioning pin for fixing the valve body and the valve cover.
Furthermore, the number of the sample gas interfaces is 14.
Furthermore, the valve cover, the valve body and the valve base are all made of temperature-resistant and corrosion-resistant materials.
Compared with the prior art, the invention has the advantages that:
1. the valve has no mechanical moving parts, no abrasion and long service life;
2. the structure is simple, the diaphragm is made of PTFE material, the temperature resistance and the corrosion resistance are realized, the maintenance and the cleaning of the valve channel are very simple, and the cost of the diaphragm is lower;
3. when the air path is switched, the change stroke of the diaphragm is small, almost no switching delay exists, no rigid impact exists, and the normal analysis of an instrument is not influenced completely;
4. the installation is convenient, the valve is small and exquisite, all parts are temperature resistant, the heating box can be directly arranged in the heating box, and the use is convenient.
Drawings
Fig. 1 is a schematic structural diagram of a high-temperature-resistant anticorrosive multichannel quick switching valve of the invention.
Fig. 2 is a schematic structural diagram of the exterior of the high-temperature-resistant and corrosion-resistant multi-channel fast switching valve of the invention.
Fig. 3 is a schematic structural diagram of a use state 1 of the high-temperature-resistant and corrosion-resistant multi-channel fast switching valve of the invention.
Fig. 4 is a schematic structural diagram of a use state 2 of the high-temperature-resistant and corrosion-resistant multi-channel quick switching valve.
Fig. 5 is a schematic diagram of a prior art multi-channel reversing valve.
As shown in the figure: 1. valve gap, 2, PTFE upper diaphragm, 3, valve body, 4, PTFE lower diaphragm, 5, locating pin, 6, valve base, 7, drive gas interface A, 8, appearance gas interface, 9, drive gas interface B.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is 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 invention and are not intended to limit the invention.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the term "connected" is to be interpreted broadly, e.g. as a fixed connection, a detachable connection, or an integral connection; the specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The utility model provides a high temperature resistant anticorrosive type multichannel fast switch valve, includes valve gap 1, valve body 3 and valve base 6 from last to down in proper order, the top of valve body 3 be equipped with PTFE and go up diaphragm 2, the below is equipped with diaphragm 4 under the PTFE, the circumferencial direction of valve gap 1 be equipped with and drive gas interface A7, valve body 3 on the circumferencial direction evenly be equipped with a plurality of appearance gas interface 8, valve base 6 the circumferencial direction be equipped with and drive gas interface B9.
And the valve base 6 is provided with a positioning pin 5 for fixing the valve body 3 and the valve cover 1.
And 14 sample gas interfaces 8 are arranged.
The valve cover 1, the valve body 3 and the valve base 6 are all made of temperature-resistant and corrosion-resistant materials.
With reference to fig. 1 and 3, state 1: the driving gas is led to the port B, the upper membrane compresses the through hole on the upper side of the valve body, the sample gas interfaces 1 and 14 are blocked by the membrane, and the sample gas interface 1 can only be connected with the sample gas interface 2 through a downward channel of the gas path through hole of the valve body;
in conjunction with fig. 1 and 4, state 2: the driving gas is led to the port A, the lower-layer diaphragm compresses a through hole at the lower side of the valve body, the sample gas ports 1 and 2 are plugged by the diaphragm, and the sample gas port 1 can only be connected with the sample gas port 14 through an upward channel of a gas path through hole of the valve body;
the upper and lower diaphragms are controlled to be respectively compressed by driving air to flow in from different interfaces, so that the switching of air paths is realized. The valve has no mechanical moving part, no mechanical abrasion and long service life; the structure is simple, the diaphragm is temperature resistant and corrosion resistant, and the maintenance and cleaning are convenient; the gas circuit switching stroke is small, no delay exists, the gas circuit switching has no rigid impact, and no influence is caused on the analysis and operation of an instrument; the whole valve is made of temperature-resistant and corrosion-resistant materials, and is convenient to install and use.
The present invention and its embodiments have been described above, and the description is not intended to be limiting, and the drawings are only one embodiment of the present invention, and the actual structure is not limited thereto. In summary, those skilled in the art should appreciate that they can readily use the disclosed conception and specific embodiments as a basis for designing or modifying other structures for carrying out the same purposes of the present invention without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (4)
1. The utility model provides a high temperature resistant anticorrosive type multichannel fast switch valve which characterized in that: from last to including valve gap (1), valve body (3) and valve base (6) down in proper order, the top of valve body (3) be equipped with diaphragm (2) on the PTFE, below is equipped with diaphragm (4) under the PTFE, the circumferencial direction of valve gap (1) be equipped with drive gas interface A (7), valve body (3) on the circumferencial direction evenly be equipped with a plurality of appearance gas interface (8), the circumferencial direction of valve base (6) be equipped with and drive gas interface B (9).
2. The high-temperature-resistant and corrosion-resistant multi-channel quick switching valve according to claim 1, characterized in that: the valve base (6) is provided with a positioning pin (5) for fixing the valve body (3) and the valve cover (1).
3. The high-temperature-resistant and corrosion-resistant multi-channel quick switching valve according to claim 1, characterized in that: and 14 sample gas interfaces (8) are arranged.
4. The high-temperature-resistant and corrosion-resistant multi-channel quick switching valve according to claim 1, characterized in that: the valve cover (1), the valve body (3) and the valve base (6) are all made of temperature-resistant and corrosion-resistant materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011464470.5A CN112610722A (en) | 2020-12-12 | 2020-12-12 | High-temperature-resistant and corrosion-resistant multi-channel quick switching valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011464470.5A CN112610722A (en) | 2020-12-12 | 2020-12-12 | High-temperature-resistant and corrosion-resistant multi-channel quick switching valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112610722A true CN112610722A (en) | 2021-04-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011464470.5A Pending CN112610722A (en) | 2020-12-12 | 2020-12-12 | High-temperature-resistant and corrosion-resistant multi-channel quick switching valve |
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| CN (1) | CN112610722A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6453725B1 (en) * | 1999-01-07 | 2002-09-24 | Siemens Energy & Automation | Gas chromatograph sample and column-switching valve |
| US20080053543A1 (en) * | 2006-08-30 | 2008-03-06 | Semba, Inc. | Valve Module And Methods For Simulated Moving Bed Chromatography |
| CN202676679U (en) * | 2012-07-11 | 2013-01-16 | 浙江福立分析仪器有限公司 | Multi-diaphragm-valve multi-column switching system |
| CN107076318A (en) * | 2014-09-29 | 2017-08-18 | 西门子公司 | Banked direction control valves |
| CN108757995A (en) * | 2018-07-24 | 2018-11-06 | 凯铭科技(杭州)有限公司 | A kind of multichannel flow control valve |
| CN110410534A (en) * | 2019-08-16 | 2019-11-05 | 凯铭科技(杭州)有限公司 | A kind of multichannel flow control valve |
| CN110608310A (en) * | 2019-10-19 | 2019-12-24 | 大连万博隆流体设备有限公司 | Novel back pressure valve with porous inlet and outlet structure |
-
2020
- 2020-12-12 CN CN202011464470.5A patent/CN112610722A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6453725B1 (en) * | 1999-01-07 | 2002-09-24 | Siemens Energy & Automation | Gas chromatograph sample and column-switching valve |
| US20080053543A1 (en) * | 2006-08-30 | 2008-03-06 | Semba, Inc. | Valve Module And Methods For Simulated Moving Bed Chromatography |
| CN202676679U (en) * | 2012-07-11 | 2013-01-16 | 浙江福立分析仪器有限公司 | Multi-diaphragm-valve multi-column switching system |
| CN107076318A (en) * | 2014-09-29 | 2017-08-18 | 西门子公司 | Banked direction control valves |
| CN108757995A (en) * | 2018-07-24 | 2018-11-06 | 凯铭科技(杭州)有限公司 | A kind of multichannel flow control valve |
| CN110410534A (en) * | 2019-08-16 | 2019-11-05 | 凯铭科技(杭州)有限公司 | A kind of multichannel flow control valve |
| CN110608310A (en) * | 2019-10-19 | 2019-12-24 | 大连万博隆流体设备有限公司 | Novel back pressure valve with porous inlet and outlet structure |
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| PB01 | Publication | ||
| PB01 | Publication | ||
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| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210406 |