CN211449648U - Precision flow regulating valve - Google Patents
Precision flow regulating valve Download PDFInfo
- Publication number
- CN211449648U CN211449648U CN201921919660.4U CN201921919660U CN211449648U CN 211449648 U CN211449648 U CN 211449648U CN 201921919660 U CN201921919660 U CN 201921919660U CN 211449648 U CN211449648 U CN 211449648U
- Authority
- CN
- China
- Prior art keywords
- valve
- valve core
- flow regulating
- flow control
- shell
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Lift Valve (AREA)
Abstract
The utility model discloses a precise flow regulating valve, which comprises a valve casing, a valve core and a valve core driving component, wherein the valve casing is provided with a valve cavity and an inlet and a flow regulating hole which are respectively communicated with the valve cavity; the valve core is arranged in the valve shell in an axially movable manner, a flow regulating head which is suitable for being inserted into the flow regulating hole and forms a gap with the flow regulating hole is arranged on the valve core, and the size of the gap is regulated by moving the valve core so as to realize the regulation of the medium flow between the inlet and the flow regulating hole; the valve core drive assembly is rotatably coupled to the valve housing and is coupled to the valve core to drive movement of the valve core within the valve housing. The utility model discloses flow control is accurate, and the return difference is little.
Description
Technical Field
The utility model relates to an accurate flow control valve.
Background
At present, a regulating valve is a pneumatic control element for controlling the flow of gas, most of the existing regulating valves are simple in structure, and the flow can be increased and reduced only along with the opening and closing of a valve core. The corresponding flow rate corresponding to the rotation angle of the valve rod accurately cannot be realized. With the development and progress of industrial production, the demand for precise control of the flow rate is higher and higher.
Disclosure of Invention
The utility model aims to solve the technical problem that overcome prior art's defect, provide a precision flow control valve, its flow control is accurate, and the return difference is little.
The utility model provides a technical scheme that above-mentioned technical problem took is: a precision flow control valve comprising:
the valve shell is provided with a valve cavity, an inlet and a flow regulating hole which are respectively communicated with the valve cavity;
the valve core is arranged in the valve shell in an axially movable manner, a flow regulating head which is suitable for being inserted into the flow regulating hole and forms a gap with the flow regulating hole is arranged on the valve core, and the size of the gap is regulated by moving the valve core so as to realize the regulation of the medium flow between the inlet and the flow regulating hole;
a valve spool drive assembly rotatably connected to the valve housing and connected to the valve spool to drive movement of the valve spool within the valve housing.
Furthermore, a taper hole shaft matching mechanism is arranged between the flow regulating hole and the flow regulating head.
Furthermore, a guide mechanism for guiding the moving direction of the valve core is arranged between the valve core and the valve shell.
Further, the guide mechanism includes:
the guide groove is arranged on the valve core along the axial direction of the valve core;
locate on the valve casing and with guide slot scarf joint complex uide pin.
Further, the poppet drive assembly includes:
the adjusting rod is rotatably connected to the valve shell and is in threaded connection with the valve core.
Further, adjust the pole with be equipped with rotary mechanism between the valve casing, rotary mechanism includes:
the support ring is arranged on the adjusting rod;
wear-resistant gaskets mounted on the valve housing and supported on both sides of the support ring;
a bushing mounted on the valve housing and supporting the underside wear pad.
Furthermore, a limiting pin and/or a positioning pin are/is arranged on the valve shell.
Furthermore, a damping sealing ring is arranged at the contact part of the valve shell and the adjusting rod.
Furthermore, sealing rings are arranged on the outer wall of the valve shell and on two sides of the inlet.
Furthermore, an elastic element is arranged between the valve core and the valve shell.
After the technical scheme is adopted, when the adjusting rod is rotated, the adjusting rod overcomes the friction force generated by the wear-resistant gasket and rotates, the valve core rotates along with the adjusting rod, the rotating motion of the valve core is converted into axial movement due to the limitation of the guide pin, the gap between the flow adjusting hole and the flow adjusting head changes along with the axial movement, the flow passing through the flow adjusting hole is increased or reduced, the accurate adjustment of the flow is realized, and the return difference is small.
Drawings
Fig. 1 is a schematic structural view of the precision flow control valve of the present invention.
Detailed Description
In order that the present invention may be more readily and clearly understood, the following detailed description of the present invention is provided in connection with the accompanying drawings.
As shown in fig. 1, a precision flow rate adjusting valve includes:
the valve comprises a valve shell, a valve cavity, an inlet and a flow regulating hole 15, wherein the inlet and the flow regulating hole are respectively communicated with the valve cavity;
the valve core 10 is arranged in the valve shell in an axially movable manner, a flow regulating head which is suitable for being inserted into the flow regulating hole 15 and forms a gap with the flow regulating hole 15 is arranged on the valve core 10, and the size of the gap is regulated by moving the valve core 10 so as to realize the regulation of the medium flow between the inlet and the flow regulating hole 15;
a valve core drive assembly rotatably connected to the valve housing and connected to the valve core 10 to drive movement of the valve core 10 within the valve housing.
As shown in fig. 1, a taper hole shaft matching mechanism is arranged between the flow regulating hole 15 and the flow regulating head.
As shown in fig. 1, a guide mechanism for guiding the moving direction of the valve element 10 is provided between the valve element 10 and the valve housing. The guide mechanism includes:
a guide groove arranged on the valve core 10 along the axial direction of the valve core 10;
and the guide pin 9 is arranged on the valve shell and is in scarf joint and matching with the guide groove.
In particular, the guide pin 9 can be screwed to the valve housing.
As shown in fig. 1, the valve core driving assembly includes:
the adjusting rod 1 is rotatably connected to the valve casing, and the adjusting rod 1 is in threaded connection with the valve core 10.
As shown in fig. 1, a rotation mechanism is provided between the adjustment lever 1 and the valve housing, and the rotation mechanism includes:
the support ring is arranged on the adjusting rod 1;
wear-resistant gaskets 5 mounted on the valve housing and supported on both sides of the support ring;
a bush 6 mounted on the valve housing and supporting the lower wear-resistant shim 5.
As shown in fig. 1, the valve housing is provided with a limit pin 2 and a positioning pin 7.
As shown in fig. 1, a damping packing 3 is provided at a contact portion between the valve housing and the adjustment lever 1.
As shown in fig. 1, the outer wall of the valve housing is provided with sealing rings at both sides of the inlet; specifically, the seal rings include an upper end seal ring 11 and a lower end seal ring 14.
An elastic element is arranged between the valve core 10 and the valve shell. The resilient element may be a spring 13. The spring 13 is mainly used to eliminate thread backlash.
The adjusting rod 1 and the valve core 10 are connected through precise threads, the adjusting rod 1 is rotated, so that the valve core 10 is driven to rotate, the guide groove on the valve core 10 converts the rotating motion of the valve core 10 into axial motion under the action of the guide pin 9, the size of a gap between a flow adjusting head of the valve core 10 and the flow adjusting hole 15 is changed, and then the size control of flow is realized. The adjusting valve with the angle corresponding to various flows can be realized by adjusting the taper of the flow adjusting head and the thread pitch of the thread of the adjusting rod 1.
In this embodiment, the valve casing specifically can include valve body 8 and lock nut 4, and lock nut 4 passes through threaded connection at the upper end of valve body 8, and lock nut 4 mainly used supports regulation pole 1, and case 10 locates in valve body 8.
In this flow valve, after the tightening of the union nut 4, the manual pressing force of the support ring of the adjusting rod 1 generates a friction force with the wear-resistant shim 5, thereby generating a rotational damping. The use of cooperation damping cream, on the one hand the reinforcing adjusts the feel of pole 1, and on the other hand can make the accurate stop of case 10 in optional position, further accurate control flow from this. The spring 13 acts to eliminate thread backlash and increase damping in the present flow valve. Meanwhile, a damping sealing ring 3 is designed for increasing the damping effect. The limiting pin 2 on the locking nut 4 can limit the rotation angle of the adjusting rod 1, and the limiting effect is achieved. The positioning pin 7 at the lower part can be accurately positioned when being convenient to install.
The above-mentioned embodiments further explain in detail the technical problems, technical solutions and advantages solved by the present invention, and it should be understood that the above only is a specific embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.
In the description of the present invention, it is to be understood that the terms indicating orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, and do not indicate or imply that the equipment or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
Furthermore, the terms "horizontal", "vertical", "overhang" and the like do not imply that the components are required to be absolutely horizontal or overhang, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the present disclosure, unless otherwise expressly stated or limited, the first feature may comprise both the first and second features directly contacting each other, and also may comprise the first and second features not being directly contacting each other but being in contact with each other by means of further features between them. Also, the first feature being above, on or above the second feature includes the first feature being directly above and obliquely above the second feature, or merely means that the first feature is at a higher level than the second feature. A first feature that underlies, and underlies a second feature includes a first feature that is directly under and obliquely under a second feature, or simply means that the first feature is at a lesser level than the second feature.
Claims (10)
1. A precision flow control valve, comprising:
the valve comprises a valve shell, a valve cavity, an inlet and a flow regulating hole (15) which are respectively communicated with the valve cavity, and a valve core;
the valve core (10) is arranged in the valve shell in an axially movable mode, a flow regulating head which is suitable for being inserted into the flow regulating hole (15) and forms a gap with the flow regulating hole (15) is arranged on the valve core (10), and the size of the gap is regulated by moving the valve core (10) so as to regulate the medium flow between the inlet and the flow regulating hole (15);
a valve spool drive assembly rotatably connected to the valve housing and connected to the valve spool (10) to drive movement of the valve spool (10) within the valve housing.
2. The precision flow control valve of claim 1,
a taper hole shaft matching mechanism is arranged between the flow regulating hole (15) and the flow regulating head.
3. The precision flow control valve of claim 1,
and a guide mechanism for guiding the moving direction of the valve core (10) is arranged between the valve core (10) and the valve shell.
4. The precision flow control valve of claim 3,
the guide mechanism includes:
the guide groove is arranged on the valve core (10) along the axial direction of the valve core (10);
and the guide pin (9) is arranged on the valve shell and is in scarf joint and matching with the guide groove.
5. The precision flow control valve of claim 1,
the cartridge drive assembly includes:
the adjusting rod (1) is rotatably connected to the valve shell, and the adjusting rod (1) is in threaded connection with the valve core (10).
6. The precision flow control valve of claim 5,
adjust pole (1) with be equipped with rotary mechanism between the valve casing, rotary mechanism includes:
the support ring is arranged on the adjusting rod (1);
wear-resistant gaskets (5) mounted on the valve housing and supported on both sides of the support ring;
a bushing (6) mounted on the valve housing and supporting a lower wear-resistant shim (5).
7. The precision flow control valve of claim 1,
and the valve shell is provided with a limiting pin (2) and/or a positioning pin (7).
8. The precision flow control valve of claim 5,
the valve shell with the contact position of adjusting pole (1) is equipped with damping sealing washer (3).
9. The precision flow control valve of claim 1,
and sealing rings are arranged on the outer wall of the valve shell and at two sides of the inlet.
10. The precision flow control valve of claim 1,
an elastic element is arranged between the valve core (10) and the valve shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921919660.4U CN211449648U (en) | 2019-11-08 | 2019-11-08 | Precision flow regulating valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921919660.4U CN211449648U (en) | 2019-11-08 | 2019-11-08 | Precision flow regulating valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211449648U true CN211449648U (en) | 2020-09-08 |
Family
ID=72319939
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921919660.4U Active CN211449648U (en) | 2019-11-08 | 2019-11-08 | Precision flow regulating valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211449648U (en) |
-
2019
- 2019-11-08 CN CN201921919660.4U patent/CN211449648U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR20060120417A (en) | Motor-operated valve | |
| CN110735933A (en) | Valve-in-valve applied to zero power of low-pressure cylinder of steam turbine | |
| CN211449648U (en) | Precision flow regulating valve | |
| CN106949257A (en) | A kind of new adjustable ball valve | |
| KR101919678B1 (en) | Fluid controller | |
| CN201891901U (en) | Electronic expansion valve | |
| CN210003912U (en) | handle proportional valve | |
| JP4738065B2 (en) | 1-turn electric valve | |
| CN211715798U (en) | High-performance low-torque eccentric butterfly valve | |
| CN208687003U (en) | A kind of ball valve of replaceable sealing structure | |
| CN208651667U (en) | A kind of gate valve component with bidirectional guide function | |
| CN112145767A (en) | Double-seat regulating valve | |
| CN113757402B (en) | Gate valve with closing limiting device | |
| CN111089180A (en) | Sealed valve | |
| CN216768542U (en) | Butt welding stop valve | |
| CN220488321U (en) | Low-temperature pneumatic single-seat regulating valve | |
| CN219606101U (en) | Valve body for pipeline | |
| CN218510188U (en) | Forged steel stop check valve | |
| CN218718966U (en) | Hard seal regulation type cut-off ball valve | |
| CN218347948U (en) | Manual regulating valve with opening position fixing structure | |
| CN220488327U (en) | Small-flow regulating valve with adjustable flow coefficient | |
| CN219994433U (en) | Style quantity regulating valve for air separation process | |
| CN218347977U (en) | Valve core position adjusting device | |
| CN217355596U (en) | Valve seat for manual turbine butt-clamping butterfly valve | |
| CN216867578U (en) | Manual diaphragm valve hand wheel stop device and diaphragm valve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |