CN203202256U - Small flow control valve - Google Patents
Small flow control valve Download PDFInfo
- Publication number
- CN203202256U CN203202256U CN 201320039349 CN201320039349U CN203202256U CN 203202256 U CN203202256 U CN 203202256U CN 201320039349 CN201320039349 CN 201320039349 CN 201320039349 U CN201320039349 U CN 201320039349U CN 203202256 U CN203202256 U CN 203202256U
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- CN
- China
- Prior art keywords
- valve
- filler
- gland
- control valve
- flap
- 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.)
- Expired - Fee Related
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Abstract
The utility model relates to a small flow control valve which comprises a valve body, a valve seat, a valve clack, a throttle sleeve, a split collar, a valve cover, a filler pressing sleeve, a filler pressing plate, a valve rod, a compression flange, a valve rod gland, filler, a sealing gasket and a connection member. The valve base is provided with an inner cavity, and throttle holes are formed in surrounding walls of the lower end of the valve base. The upper end of the valve rod penetrates the valve rod gland, and then the valve rod gland is screwed into the upper end of the valve clack and prevented from getting loose by a fastening screw. The lower end of the valve cover sequentially penetrates the compression flange and the filler, the split collar is installed in an annular groove at the lower end of the valve cover, and the sealing gasket, the valve base, the throttle sleeve, a combined member of the valve rod and the valve clack and a combined member of the valve cover and the compression flange are sequentially installed in an inner cavity of the valve body and compressed through a connection member. The small flow control valve has the advantages of being excellent in adjusting, capable of performing self-sealing and multi-stage depressurization and is particularly suitable for adjusting small flow and flow with large pressure difference in front of and behind the valve, and the valve seat is convenient to maintain.
Description
Technical field
The utility model relates to a kind of adjusting control valve, relates in particular to a kind of control valve for small flows.
Background technique
In heating network and power plant's thermal cycle pipe network, all to control the flow of medium in the pipe network, to reach purpose energy-conservation and the available heat circulation.Will modulating valve be installed at pipe network like this, achieve the above object.And present employed control valve for small flows, its flap is that awl is curved, by the flow that moves up and down to regulate medium in the pipe network of conical section flap, valve seat is directly processed by the valve body overlaying surface, and valve gap adopts the flange gasket seal form, because this class modulating valve structural limitations, flap is because of the impact corrosion-deformation, so it is inaccurate to cause modulating valve to regulate, and poor sealing performance, pressure drop ratio is less, and the valve seat maintenance is inconvenient.
The model utility content
The purpose of this utility model be for overcome existing control valve for small flows regulate inaccurate, poor sealing performance, pressure drop ratio is less, the valve seat maintenance is inconvenient, provides that a kind of adjusting is superior, selfsealings, multistage step-down, the removable control valve for small flows of valve seat.
Technical solution of the present utility model is: a kind of control valve for small flows, comprise valve body, valve seat, flap, orifice sleeve, divided ring, valve gap, filler gland, hold-down grid, valve rod, supported flange, valve spindle gland, filler, gasket seal and coupling, described valve seat has inner chamber, wall is provided with throttle orifice around the lower end, but makes its valve seat more piece step-down.
Wall is provided with throttle orifice around the described orifice sleeve, the flap lower end be provided with inner chamber and all around wall be provided with throttle orifice, make its modulating valve can realize the more piece step-down.
Valve spindle gland is passed in described valve rod upper end, the valve gap gland is screwed in the flap upper end again, and gets loose with fastening the preventing of Cock screw.
Described valve gap lower end is passed supported flange, filler successively, divided ring is packed in the annular groove of valve gap lower end, again body cavity is packed into the successively assembly of assembly, valve gap and supported flange of gasket seal, valve seat, orifice sleeve, valve rod and flap, compress by coupling, realized that selfsealings and valve seat are replaceable.
The beneficial effects of the utility model are: it is easy to maintenance to regulate superior, selfsealings, multistage step-down, valve seat, is specially adapted to small flow, the bigger control valve for small flows of pressure reduction after and before the valve.
Description of drawings
Fig. 1 is structural representation of the present utility model.
The schematic representation of spool when Fig. 2 is valve open.
Embodiment
Below in conjunction with accompanying drawing concrete enforcement of the present utility model is implemented to be described further.
With reference to accompanying drawing Fig. 1, Fig. 2, a kind of control valve for small flows, comprise valve body 14, valve seat 13, flap 12, orifice sleeve 11, divided ring 10, valve gap 8, filler gland 6, hold-down grid 7, valve rod 9, supported flange 3, valve spindle gland 1, filler 2, gasket seal and coupling, described valve seat 13 has inner chamber, wall is provided with throttle orifice 15 around the lower end, but makes its valve seat more piece step-down.
Wall is provided with throttle orifice 17 around the described orifice sleeve 11, flap 12 lower ends be provided with inner chamber and all around wall be provided with throttle orifice 19, make its modulating valve can realize the more piece step-down.
Described valve gap 8 lower ends are passed supported flange 3, filler 2 successively, divided ring 10 is packed in the annular groove of valve gap 8 lower ends, again valve body 14 inner chambers are packed into the successively assembly, valve gap 8 of gasket seal 16, valve seat 13, orifice sleeve 11, valve rod 9 and flap 12 and the assembly of supported flange 3, compress by coupling, realized that selfsealings and valve seat 13 are replaceable.
State when being valve open as shown in Figure 2, medium enters the cavity that throttle orifice 17 that the valve body epicoele is provided with through orifice sleeve flows into flap lower ends and orifice sleeve stroke from valve body right-hand member flange entrance, the throttle orifice 19 that is provided with through flap, the throttle orifice 15 that valve seat is provided with again, flowed out by the left end flange through valve flowing channel to the valve body cavity of resorption after the step-down, realized multistage step-down.
The beneficial effects of the utility model are: it is easy to maintenance to regulate superior, selfsealings, multistage step-down, valve seat, is specially adapted to small flow, the bigger control valve for small flows of pressure reduction after and before the valve.
Claims (4)
1. control valve for small flows, comprise valve body, valve seat, flap, orifice sleeve, divided ring, valve gap, filler gland, hold-down grid, valve rod, supported flange, valve spindle gland, filler, gasket seal and coupling, it is characterized in that described valve seat has inner chamber, wall is provided with throttle orifice around the lower end, but makes its valve seat more piece step-down.
2. control valve for small flows according to claim 1 is characterized in that: wall is provided with throttle orifice around the described orifice sleeve, the flap lower end be provided with inner chamber and all around wall be provided with throttle orifice.
3. control valve for small flows according to claim 1 is characterized in that: pass valve spindle gland on the described valve rod, the valve gap gland is screwed in the flap upper end again, and get loose with fastening the preventing of Cock screw.
4. control valve for small flows according to claim 1, it is characterized in that: described valve gap lower end is passed supported flange, filler successively, divided ring is packed in the annular groove of valve gap lower end, again body cavity is packed into the successively assembly of assembly, valve gap and supported flange of gasket seal, valve seat, orifice sleeve, valve rod and flap compresses by coupling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320039349 CN203202256U (en) | 2013-01-25 | 2013-01-25 | Small flow control valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320039349 CN203202256U (en) | 2013-01-25 | 2013-01-25 | Small flow control valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203202256U true CN203202256U (en) | 2013-09-18 |
Family
ID=49146365
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320039349 Expired - Fee Related CN203202256U (en) | 2013-01-25 | 2013-01-25 | Small flow control valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203202256U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103867729A (en) * | 2014-04-01 | 2014-06-18 | 苏州道森阀门有限公司 | Labyrinth type minimum flow valve |
| CN113236801A (en) * | 2021-05-19 | 2021-08-10 | 南通红星高压阀门有限公司 | Anti-scouring high-pressure regulating valve for realizing sealing and regulating staggered type and flow regulating method thereof |
-
2013
- 2013-01-25 CN CN 201320039349 patent/CN203202256U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103867729A (en) * | 2014-04-01 | 2014-06-18 | 苏州道森阀门有限公司 | Labyrinth type minimum flow valve |
| CN113236801A (en) * | 2021-05-19 | 2021-08-10 | 南通红星高压阀门有限公司 | Anti-scouring high-pressure regulating valve for realizing sealing and regulating staggered type and flow regulating method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130918 Termination date: 20140125 |