CN220688074U - Micro-flow high-precision regulating valve - Google Patents
Micro-flow high-precision regulating valve Download PDFInfo
- Publication number
- CN220688074U CN220688074U CN202322467557.3U CN202322467557U CN220688074U CN 220688074 U CN220688074 U CN 220688074U CN 202322467557 U CN202322467557 U CN 202322467557U CN 220688074 U CN220688074 U CN 220688074U
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- valve
- adjusting
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- groove
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- 230000001105 regulatory effect Effects 0.000 title claims abstract description 54
- 238000007789 sealing Methods 0.000 claims abstract description 16
- 238000012856 packing Methods 0.000 claims description 21
- 238000003825 pressing Methods 0.000 claims description 15
- 230000000149 penetrating effect Effects 0.000 abstract description 2
- 230000001276 controlling effect Effects 0.000 description 4
- 239000007788 liquid Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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Abstract
The utility model discloses a micro-flow high-precision regulating valve, which relates to the technical field of valves and comprises a valve body, a valve cover, a valve seat, a valve rod, a valve core and a valve cage, wherein the valve core comprises a connecting part connected with the valve rod, a sealing part in sealing fit with the valve seat and a regulating part penetrating through the valve seat for regulating flow, the regulating part is provided with a plurality of regulating grooves, the regulating grooves comprise a first regulating groove and a second regulating groove, the length of the first regulating groove is larger than that of the second regulating groove, and the first regulating groove and the second regulating groove are alternately distributed along the circumferential direction of the regulating part. The utility model solves the problem that a single regulating groove is easy to be eroded and damaged by high-pressure medium, and is controlled in two sections, so that the curve corresponding to flow regulation is smoother, and the accurate control of the flow is ensured.
Description
Technical Field
The utility model relates to the technical field of valves, in particular to a micro-flow high-precision regulating valve.
Background
A regulating valve is a device for changing the throughput of gas or liquid and achieving a certain requirement, and belongs to a precise control instrument, and is usually composed of a main command device and other auxiliary parts. The switch can be operated by only receiving the signal from the regulating instrument, thereby achieving the required purpose. The regulating valve is mainly used for controlling measured parameters such as pressure, liquid level, temperature and the like in automatic control of industrial production processes, and can also be used as an intermediate relay in a remote continuous monitoring system and a computer control system, thereby playing an important role in automatic regulation and control of fluid.
The micro flow regulating valve has high regulating precision, is suitable for regulating smaller flow, the valve core of the existing micro flow regulating valve generally adopts a parabolic curve shape, the purpose of controlling flow is achieved through the change of the flow area between a single parabolic curve and a valve seat, under a high-pressure working condition, one end provided with the parabolic curve is easy to be eroded and damaged to influence the control effect due to the fact that the flow speed of a medium is too fast, the changing curve of the valve core is smaller, and the operation precision of a valve rod cannot be ensured to accurately control the flow.
Disclosure of Invention
Aiming at the defects of the prior art, the utility model provides a micro-flow high-precision regulating valve.
The technical scheme provided by the utility model is as follows:
the utility model provides a micro-flow high accuracy governing valve, includes valve body, valve gap, disk seat, valve rod, case, the valve body is equipped with inlet channel and outlet channel, inlet channel is linked together through the well chamber with outlet channel, the valve gap is installed in the valve body top, film actuating mechanism is connected to the valve rod upper end, and its lower extreme passes the valve gap and extends to well chamber and link to each other with the case, well intracavity is equipped with the valve cage, both ends are sealed with valve gap, disk seat respectively and are supported against about the valve cage, the valve cage lateral wall is equipped with a plurality of through-holes, the case includes the connecting portion of being connected with the valve rod, with disk seat sealing fit's sealing part, pass the disk seat and be used for adjusting the regulation portion of flow, the regulating part is equipped with a plurality of regulating grooves, the regulating groove includes first regulating groove, second regulating groove, the length of first regulating groove is greater than the length of second regulating groove, first regulating groove, second regulating groove are distributed along regulating part circumference in turn.
The adjusting groove is parabolic or V-shaped, and the opening of the adjusting groove is gradually smaller from bottom to top.
The valve body is provided with a mounting groove corresponding to the valve seat, the upper end of the valve seat is abutted against the valve cage for sealing, and the valve cover compresses the valve seat and the valve cage and enables the lower end of the valve seat and the mounting groove to form sealing fit.
A gasket is arranged between the valve seat and the valve body, and a gasket is arranged between the valve cage and the valve cover.
The middle part of the valve seat is provided with an adjusting hole through which the adjusting part can pass, and an O-shaped ring is arranged in the adjusting hole.
The valve core is detachably connected with the valve rod through a connecting pin.
The packing is arranged between the valve cover and the valve rod, a packing pressing sleeve is arranged at the upper end of the packing, a packing pressing plate is arranged at the upper end of the packing pressing sleeve, and the packing pressing plate is fixedly connected with the valve cover through bolts and compresses the packing pressing sleeve.
The utility model has the beneficial effects that: according to the utility model, the regulating grooves with two lengths are alternately arranged on the circumference of the regulating part of the valve core, so that the impact force of a medium on each regulating groove is consistent under a high-pressure working condition, the problem that a single regulating groove is easily damaged by high-pressure medium erosion is solved, and the regulating grooves with two lengths are controlled in two sections, so that the corresponding flow regulating curve is smoother, and the accurate control of the flow is ensured.
Drawings
FIG. 1 is a schematic cross-sectional view of an embodiment of the present utility model;
FIG. 2 is an enlarged view of a portion of FIG. 1;
fig. 3 is a schematic structural diagram of a valve core according to an embodiment of the present utility model.
Detailed Description
Embodiments of the present utility model are further described below with reference to the accompanying drawings.
As shown in figures 1-3, the micro-flow high-precision regulating valve comprises a valve body 1, a valve cover 9, a valve seat 4, a valve rod 10 and a valve core 6.
The valve body 1 is provided with an inlet channel 21 and an outlet channel 22, the inlet channel 21 is communicated with the outlet channel 22 through a middle cavity, and the inlet channel 21 is lower than the outlet channel 22, namely, the medium circulation mode of low inlet and high outlet is realized.
The valve cover 9 is installed above the valve body 1 and is fastened by a stud 17 and a nut 18. The upper end of the valve rod 10 is connected with a film actuating mechanism 14, the lower end of the valve rod passes through the valve cover 9 to extend to the middle cavity and is connected with the valve core 6, the valve cage 5 is arranged in the middle cavity, the valve cage 5 is of an annular structure, the valve cage 5 is arranged on the outer side of the valve core 6, and a plurality of through holes 51 are formed in the side wall of the valve cage, so that turbulence is reduced. The valve body 1 is equipped with mounting groove 41 corresponding to disk seat 4, and disk seat 4 upper end is supported with cage 5 lower extreme and is sealed, and cage 5 upper end is sealed with valve gap 9 and is supported, and valve gap 9 compresses tightly disk seat 4 and cage 5 and makes disk seat 4 lower extreme and mounting groove 41 constitute sealing fit, in order to ensure reliable sealing, is equipped with gasket 2 between disk seat 4 and valve body 1, is equipped with gasket 8 between cage 5 and the valve gap 9, and the gasket adopts metal winding graphite gasket.
A packing 11 is arranged between the valve cover 9 and the valve rod 10, a packing pressing sleeve 12 is arranged at the upper end of the packing 11, a packing pressing plate 13 is arranged at the upper end of the packing pressing sleeve 12, the packing pressing plate 13 is fixedly connected with the valve cover 9 through a stud 15 and a nut 16, the packing pressing sleeve 12 is pressed tightly, leakage of a medium from a gap between the valve cover 9 and the valve rod 10 is prevented, and effective sealing is ensured.
As shown in fig. 3, the valve core 6 includes a connecting portion 61 connected with the valve rod 10, a sealing portion 62 in sealing fit with the valve seat 4, and an adjusting portion 63 penetrating through the valve seat 4 for adjusting flow, wherein the adjusting portion 63 is provided with four adjusting grooves, the adjusting grooves are in a parabolic shape with openings gradually decreasing from bottom to top, and may also be in a V shape, and the valve core includes two first adjusting grooves 631 and two second adjusting grooves 632, wherein the length of the first adjusting groove 631 is greater than that of the second adjusting groove 632, and the first adjusting grooves 631 and the second adjusting grooves 632 are alternately distributed along the circumferential direction of the adjusting portion 63. When the valve rod 10 is gradually lifted, firstly, the upper end of the first regulating groove 631 starts to participate in regulating and controlling the medium flow, and when the valve rod 10 is lifted for a certain distance, the upper end of the second regulating groove 632 also starts to participate in regulating and controlling the medium flow together with the first regulating groove 631, the area of the regulating groove for medium to pass through is gradually increased, and the two-section regulation is realized, so that the accurate and smooth control of the flow is realized.
In this embodiment, the middle part of the valve seat 4 is provided with an adjusting hole 41 through which the adjusting part 63 can pass, an O-ring 3 is arranged in the adjusting hole 41, and the O-ring 3 ensures the tightness between the adjusting part 63 and the adjusting hole 41, so as to prevent the medium from leaking through the gap between the adjusting part and the adjusting hole, and influence the flow control.
In this embodiment, the valve core 6 is detachably connected with the valve rod 10 through the connecting pin 7, and accurate adjustment under different loads can be satisfied only by replacing the valve core and the corresponding valve seat, so that the valve with the same specification can have various CV values, and the maintenance is simple and quick.
The examples should not be construed as limiting the utility model, and any non-inventive modifications based on the spirit of the utility model should be regarded as being within the scope of the utility model.
Claims (7)
1. The utility model provides a micro-flow high accuracy governing valve, includes valve body, valve gap, disk seat, valve rod, case, the valve body is equipped with inlet channel and outlet channel, inlet channel is linked together through the well chamber with the outlet channel, the valve gap is installed in the valve body top, film actuating mechanism is connected to the valve rod upper end, and its lower extreme passes the valve gap and extends to well chamber and link to each other with the case, its characterized in that: the valve is characterized in that a valve cage is arranged in the middle cavity, the upper end and the lower end of the valve cage are respectively abutted against the valve cover and the valve seat in a sealing mode, a plurality of through holes are formed in the side wall of the valve cage, the valve core comprises a connecting portion connected with the valve rod, a sealing portion matched with the valve seat in a sealing mode and an adjusting portion used for adjusting flow through the valve seat, a plurality of adjusting grooves are formed in the adjusting portion, each adjusting groove comprises a first adjusting groove and a second adjusting groove, the length of each first adjusting groove is larger than that of each second adjusting groove, and the first adjusting grooves and the second adjusting grooves are distributed alternately along the circumference of the adjusting portion.
2. The micro-flow high-precision regulating valve according to claim 1, wherein: the adjusting groove is parabolic or V-shaped, and the opening of the adjusting groove is gradually smaller from bottom to top.
3. The micro-flow high-precision regulating valve according to claim 1, wherein: the valve body is provided with a mounting groove corresponding to the valve seat, the upper end of the valve seat is abutted against the valve cage for sealing, and the valve cover compresses the valve seat and the valve cage and enables the lower end of the valve seat and the mounting groove to form sealing fit.
4. A micro-flow high-precision regulating valve according to claim 3, wherein: a gasket is arranged between the valve seat and the valve body, and a gasket is arranged between the valve cage and the valve cover.
5. The micro-flow high-precision regulating valve according to claim 1, wherein: the middle part of the valve seat is provided with an adjusting hole through which the adjusting part can pass, and an O-shaped ring is arranged in the adjusting hole.
6. The micro-flow high-precision regulating valve according to claim 1, wherein: the valve core is detachably connected with the valve rod through a connecting pin.
7. The micro-flow high-precision regulating valve according to claim 1, wherein: the packing is arranged between the valve cover and the valve rod, a packing pressing sleeve is arranged at the upper end of the packing, a packing pressing plate is arranged at the upper end of the packing pressing sleeve, and the packing pressing plate is fixedly connected with the valve cover through bolts and compresses the packing pressing sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322467557.3U CN220688074U (en) | 2023-09-12 | 2023-09-12 | Micro-flow high-precision regulating valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322467557.3U CN220688074U (en) | 2023-09-12 | 2023-09-12 | Micro-flow high-precision regulating valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220688074U true CN220688074U (en) | 2024-03-29 |
Family
ID=90410384
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322467557.3U Active CN220688074U (en) | 2023-09-12 | 2023-09-12 | Micro-flow high-precision regulating valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220688074U (en) |
-
2023
- 2023-09-12 CN CN202322467557.3U patent/CN220688074U/en active Active
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