CN209959968U - Small-size large-traffic lining fluorine double-seat governing valve - Google Patents
Small-size large-traffic lining fluorine double-seat governing valve Download PDFInfo
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- CN209959968U CN209959968U CN201920833573.0U CN201920833573U CN209959968U CN 209959968 U CN209959968 U CN 209959968U CN 201920833573 U CN201920833573 U CN 201920833573U CN 209959968 U CN209959968 U CN 209959968U
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Abstract
The utility model provides a large-traffic lining fluorine two-seat governing valve of small, actuating mechanism including valve body, case, disk seat, valve rod and drive the valve rod motion, the valve body in be equipped with two sealing ports, at least including first total runner, second total runner and two subchannels in the valve body, two subchannel one end directly communicate with one of them total runner, two subchannel other ends are respectively through sealing port and another total runner intercommunication to each seals the department and all is equipped with the case of opening and close this sealing port. The utility model discloses a design of two sealed mouths, under the condition that the aperture is the same, have bigger regulation flow capacity than single seat governing valve, simultaneously through special case profile curve, can obtain corresponding equal percentage, straight line equal flow curve, realize large-traffic, high differential pressure's the accurate flow control of corrosive medium.
Description
Technical Field
The utility model belongs to the technical field of the valve, especially, relate to a two seat governing valves of line fluorine.
Background
The regulating valve is also called a control valve, and in the field of industrial automation process control, the final control element for changing the process parameters of medium flow, pressure, temperature, liquid level and the like by power operation through receiving the control signal output by a regulating control unit. Generally consisting of an actuator and a valve. If according to the stroke characteristic, the regulating valve can be divided into a straight stroke and an angular stroke; the pneumatic regulating valve, the electric regulating valve and the hydraulic regulating valve can be divided into three types according to the power used by the matched executing mechanism; the method is divided into three types, namely a linear characteristic, an equal percentage characteristic and a parabolic characteristic according to functions and characteristics of the method. The regulating valve is suitable for air, water, steam, various corrosive media, slurry, oil and other media.
The valve seat in the existing regulating valve is a single valve seat, the capacity of regulating flow is small, and the valve body of the valve is relatively large in the field needing large flow, so that the cost of the valve is increased.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem of providing a big large-traffic lining fluorine double-seater governing valve of small.
The utility model discloses a realize through following technical scheme:
the utility model provides a big large-traffic lining fluorine double-seat governing valve of small, includes valve body, case, disk seat, valve rod and drives the actuating mechanism of valve rod motion, the valve body in be equipped with two sealing ports, at least include first total runner, second total runner and two subchannel in the valve body, two subchannel one end and one of them total runner direct intercommunication, two subchannel other ends are respectively through sealing port and another total runner intercommunication to all be equipped with the case of opening and close this sealing port in each sealing port department.
The two valve cores of the two sealing ports are coaxially arranged, and the two valve cores are in linkage fit with the valve rod.
A gap for medium circulation is reserved between the two valve cores.
The utility model has the advantages that: the utility model discloses a design of two sealed mouths, under the condition that the aperture is the same, have bigger regulation flow capacity than single seat governing valve, simultaneously through special case profile curve, can obtain corresponding equal percentage, straight line equal flow curve, realize large-traffic, high differential pressure's the accurate flow control of corrosive medium. The part contacted with the medium is coated with corrosion-resistant fluoroplastic, so that the coating can bear any corrosive medium except molten alkali metal and elemental fluorine, the high-temperature resistance, corrosion resistance and wear resistance of the coating are enhanced, and the application range is expanded. Fluoroplastics are lined between the opening and closing parts, and the friction coefficient of the fluoroplastics is very small, so that the valve has very light opening and closing thrust, and the adjustment and the opening and the closing of the valve can be realized by using a smaller actuating mechanism.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Detailed Description
The present invention will be further described with reference to the following examples.
Examples
Fig. 1 shows a fluorine-lined double-seat regulating valve with small volume and large flow rate, which comprises a valve body 1, a valve core 2, a valve seat 3, a valve rod 4 and an actuating mechanism 5 for driving the valve rod 4 to move, wherein the valve body 1 is connected with a valve cover 7, a filling mechanism 6 is arranged between the valve rod 4 and the valve cover 7, and the valve cover 7 is connected with an actuating structure through a support 15. The actuator 5 in this embodiment may be a manual or electric or pneumatic actuator 5, the actuator 5 is a technology mature in the market, and the specific structure thereof is not a technical problem to be solved in this application, and it will not be elaborated herein in detail, two sealing ports 8 are provided in the valve body 1, the valve body 1 at least includes a first main flow channel 9, a second main flow channel 10 and two branch flow channels 11, one end of each of the two branch flow channels 11 is directly communicated with one of the main flow channels, the other end of each of the two branch flow channels 11 is respectively communicated with the other main flow channel through the sealing port 8, and a valve element 2 for opening and closing the sealing port 8 is provided at each sealing port 8. The valve is two general formulas in this embodiment, and total runner is increased relatively when to tee bend or more passageways, but sealing opening 8 all is two, and the total runner of valve feed inlet also is only one, and the passageway of discharge gate sets up as required.
In order to synchronously open and close the two sealing ports 8 when the valve is opened and closed, the two valve cores 2 of the two sealing ports 8 are coaxially arranged, and the two valve cores 2 are in linkage fit with the valve rod 4. So that the two valve cores 2 can be opened and closed simultaneously when the actuator 5 drives the valve rod 4 to move.
In order to prevent the two valve elements 2 from obstructing the medium flow when they are opened, a gap 12 is reserved between the two valve elements 2 for the medium to flow through. Thus, after the valve is opened, the medium can flow out from the gap 12 between the two valve cores 2, and the fluidity of the medium is improved.
The end of the valve core 2, which is far away from the actuator 5, is a tapered structure with a gradually reduced diameter, the overall structure of the valve core 2 in the embodiment is similar to a bowl-shaped structure, the bottom of the valve core 2 is greatly contracted, and the taper of the upper part of the valve core 2 is small, which is also a design for facilitating flow control.
In order to be suitable for being used under the working conditions of a plurality of corrosive media, the outer part of the valve rod 4, the outer part of the valve core 2 and the inner wall of the valve body 1 are all fluorine-lined structures 13. The fluorine-lined structure 13 in this embodiment is a fluoroplastic lined liner. The part contacted with the medium is coated with corrosion-resistant fluoroplastic, so that the coating can bear any corrosive medium except molten alkali metal and elemental fluorine, the high-temperature resistance, corrosion resistance and wear resistance of the coating are enhanced, and the application range is expanded. Fluoroplastics are lined between the opening and closing pieces, and the friction coefficient of the fluoroplastics is very small, so that the valve has very light opening and closing thrust, and the adjustment and the opening and the closing of the valve can be realized by using a smaller actuating mechanism 5.
A guide sleeve 14 is connected between the valve body 1 and the valve cover 7, a part of the guide sleeve 14 is connected between the valve cover 7 and the valve body 1, a part of the guide sleeve 14 extends into the valve body 1, and the valve rod 4 is arranged through the guide sleeve 14. And a fluorine lining structure 13 is arranged outside the guide sleeve 14. The design of uide bushing 14 in this embodiment can make the preparation of valve body 1 inner space big enough, and the one end bore that makes its valve gap 7 connect is great relatively, makes the medium circulation in the valve body 1 more smooth and easy like this, and uide bushing 14 can guarantee valve rod 4's intensity again to and guarantee that valve rod 4 can not lead to its movement path to produce the skew because of the long distance does not have the setback, plays the guard action to valve rod 4.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only illustrative of the principles of the present invention, and that simple modifications and substitutions by those skilled in the art are within the scope of the present invention without departing from the spirit and scope of the present invention.
Claims (8)
1. The utility model provides a large-traffic lining fluorine double-seat governing valve of small, includes valve body, case, disk seat, valve rod and drives the actuating mechanism of valve rod motion, its characterized in that: the valve body is internally provided with two sealing ports, the valve body at least comprises a first main flow passage, a second main flow passage and two branch flow passages, one end of each branch flow passage is directly communicated with one main flow passage, the other end of each branch flow passage is respectively communicated with the other main flow passage through the sealing port, and a valve core for opening and closing the sealing port is arranged at each sealing port.
2. The fluorine-lined double seat regulating valve with small volume and large flow rate as claimed in claim 1, characterized in that: the two valve cores of the two sealing ports are coaxially arranged, and the two valve cores are in linkage fit with the valve rod.
3. A small-volume high-flow fluorine-lined double seat regulating valve according to claim 1 or 2, characterized in that: a gap for medium circulation is reserved between the two valve cores.
4. A small volume high flow rate fluorine lined double seat regulator valve according to claim 3, wherein: wherein, the end of the valve core far away from the actuator is a conical structure with gradually reduced diameter.
5. A small-volume high-flow fluorine-lined double seat regulating valve according to claim 1 or 2, characterized in that: the outside of the valve rod, the outside of the valve core and the inner wall of the valve body are all fluorine-lined structures.
6. A small-volume high-flow fluorine-lined double seat regulating valve according to claim 1 or 2, characterized in that: the valve body is connected with a valve cover, a packing mechanism is arranged between the valve rod and the valve cover, and the valve cover is connected with an execution structure through a support.
7. The fluorine-lined double seat regulating valve with small volume and large flow rate as claimed in claim 6, wherein: a guide sleeve is connected between the valve body and the valve cover, one part of the guide sleeve is connected between the valve cover and the valve body, the other part of the guide sleeve extends into the valve body, and the valve rod penetrates through the guide sleeve.
8. The fluorine-lined double seat regulating valve with small volume and large flow rate as claimed in claim 7, wherein: and a fluorine lining structure is arranged outside the guide sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920833573.0U CN209959968U (en) | 2019-06-04 | 2019-06-04 | Small-size large-traffic lining fluorine double-seat governing valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920833573.0U CN209959968U (en) | 2019-06-04 | 2019-06-04 | Small-size large-traffic lining fluorine double-seat governing valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209959968U true CN209959968U (en) | 2020-01-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920833573.0U Active CN209959968U (en) | 2019-06-04 | 2019-06-04 | Small-size large-traffic lining fluorine double-seat governing valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209959968U (en) |
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2019
- 2019-06-04 CN CN201920833573.0U patent/CN209959968U/en active Active
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