CN2695734Y - Pneumatic control valve - Google Patents
Pneumatic control valve Download PDFInfo
- Publication number
- CN2695734Y CN2695734Y CN 200420049594 CN200420049594U CN2695734Y CN 2695734 Y CN2695734 Y CN 2695734Y CN 200420049594 CN200420049594 CN 200420049594 CN 200420049594 U CN200420049594 U CN 200420049594U CN 2695734 Y CN2695734 Y CN 2695734Y
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- CN
- China
- Prior art keywords
- valve
- pneumatic control
- pin type
- main valve
- diaphragm
- 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 discloses a valve, in particular to a pneumatic control valve, which adopts a pin type guiding valve core, a cage type main valve core, and an externally provided pressure releasing tube. The pneumatic control valve is composed of a valve body which is composed of an inlet, an outlet, a flow guiding port, and a valve port, wherein, a circular groove is arranged on the inner edge of the valve port; a first pad ring is clamped in the circular groove; the spacer is provided with a sleeve, the inner part of which passes through a main valve core; the main valve core is matched with the flow guiding port below the main valve core through sealing; the valve port is fixed with an intermediate connecting tube through sealing; a baffle is arranged in the intermediate connecting tube; the inner part of the baffle passes through the pin type guiding valve core through sealing and sliding; the inserting top of the pin type guiding valve core is in a locating hole which is arranged on the sleeve; the intermediate connecting tube is fixed with an upper cover plate through the sealing of the diaphragm; the pin type guiding valve core is fixed onto the diaphragm through a second pad ring and an elastic king pad, and an air inlet is arranged in a chamber which is formed between the diaphragm and the baffle. The utility model has the advantages of small valve base, small differential pressure, and easy maintenance, and the valve core is not easy to be blocked.
Description
Technical field
The utility model relates to a kind of valve, in particular to a kind of employing pin type Pilot poppet, cage main valve plug, and the pneumatic control valve of external discharge pressure pipe.
Background technique
At present, in industrial pipeline medium automation control area, the sealed gradually performance of traditional stop valve is good, be convenient to realize that the smart little novel control valve of control automatically replaces, traditional stop valve generally adopts cylinder as actuator, its action promotes valve rod according to given signal, it is displacement of valve rod, open or close thereby reach, and the guiding opening ways of the control valve of present domestic appearance adopts when pressure signal is provided, spool is to bottom offset, and seal form adopts soft seal, the spool useful area valve seat that causes bigger than normal is big, and pressure reduction is big, and the pilot valve wearing and tearing are big, life-span is short, and traditional spool row pressure Open valve adopts the row pressure of sleeve endoporus more, because the aperture is little, often causes defective valve because of stopping up in the hole; The tradition main valve plug adopts seal ring 90 degree sealings, because impurity such as pipeline inner rust erosion or welding slag cause the damage of sealing surface and seepage easily, have again that main valve plug adopts a hole pressurized form in the prior art of being exactly, easily stop up difficult maintenance, and traditional elastomer diaphragm easy deformation.
The model utility content
The purpose of this utility model is to overcome the deficiency of existing stop valve, and a kind of employing pin type Pilot poppet, cage main valve plug are provided, and the pneumatic control valve of external discharge pressure pipe.
To achieve these goals, the technical solution adopted in the utility model is:
A kind of pneumatic control valve, it comprises valve body, this valve body comprises import, outlet, flow-guiding mouth and valve port, wherein, inner edge offers circular groove on this valve port, and engaging is provided with first packing ring in this circular groove, and this first packing ring is provided with sleeve, be equipped with main valve plug in this sleeve, the flow-guiding mouth of this main valve plug and main valve plug below is sealed and matched;
Sealing and fixing has middle adapter on this valve port, be provided with dividing plate in this middle adapter, sealing is slided and is equipped with the pin type Pilot poppet in this dividing plate, this pin type Pilot poppet is inserted and is withstood in the positioning hole that is provided with on the sleeve, be fixed with upper cover plate by diaphragm seal on this middle adapter, this pin type Pilot poppet is fixed on the diaphragm by second packing ring and bullet king pad, and the chamber that forms between this diaphragm and the dividing plate offers inlet hole, and this inlet hole is connected with air inlet system.
Stainless steel material after this pin type Pilot poppet employing is modified, the top that this pin type Pilot poppet cooperates with sleeve is coniform.
The chamber that forms between this dividing plate and the sleeve offers exhaust port, and this exhaust port is connected with the external discharge pressure pipe of valve body, and external discharge pressure pipe of this valve body and outlet connect.
Sealing is provided with joint in this exhaust port, and the external discharge pressure pipe of this joint and valve body is tightly connected.
This main valve plug is the cage main valve plug that stainless steel material is made, and the sealing angle of this cage main valve plug is 60 degree.
The top end face of this main valve plug is provided with several pressurized holes.
This diaphragm is the tetrafluoroethylene diaphragm; This air inlet system is a cylinder.
This pneumatic control valve in use, when pipeline medium enters in the sleeve through the cage main valve plug, because main valve plug and barrel bore pressure reduction are closed main valve plug, when providing pressurized air when inlet hole enters air chamber, make diaphragm drive the pin type Pilot poppet and move up, thereby open sleeve top positioning hole, the main valve plug internal pressure is discharged through discharge pressure pipe, upstream pressure is greater than downstream pressure, and main valve plug is opened, and valves are opened;
When no pressurized gas provided, diaphragm was sealed and matched pin type Pilot poppet and positioning hole because play the effect of king's pad, and pressure medium is delivered in the sleeve through the pressurized hole of main valve plug, produces pressure reduction thus, and main valve plug is closed.
Particularly,, the utility model is provided with pin type Pilot poppet, cage main valve plug owing to having adopted, and the structure of external discharge pressure pipe, make to the utlity model has following beneficial effect:
1, valve seat is little, pressure reduction is little;
2, maintenance is easy;
3, spool is difficult for stopping up.
Be further described this use is novel below in conjunction with the drawings and specific embodiments.
Description of drawings
Fig. 1 is the utility model embodiment's an internal structure schematic representation;
Fig. 2 is the end construction schematic representation of the utility model embodiment main valve plug.
Embodiment
As shown in Figure 1, this pneumatic control valve, it comprises valve body 1, this valve body comprises import 2, outlet 3, flow-guiding mouth 4 and valve port 5, and wherein, inner edge offers circular groove on this valve port 5, engaging is provided with first packing ring 6 in this circular groove, this first packing ring 6 is provided with sleeve 7, is equipped with main valve plug 8 in this sleeve 7, and this main valve plug 8 is sealed and matched with the flow-guiding mouth 4 of main valve plug 8 belows;
Sealing and fixing has middle adapter 9 on this valve port 5, be provided with packing ring 12 between this middle adapter 9 and the valve port 5, be provided with dividing plate 10 in this middle adapter 9, sealing is slided and is equipped with pin type Pilot poppet 11 in this dividing plate 10, this pin type Pilot poppet 11 is inserted and is withstood in the positioning hole 13 that is provided with on the sleeve 7, by diaphragm 14 sealing and fixing upper cover plate 15 is arranged on this middle adapter 9, this diaphragm 14 is the tetrafluoroethylene diaphragm, this pin type Pilot poppet 11 is fixed on the diaphragm 14 by second packing ring 16 and bullet king pad 17, the chamber that forms between this diaphragm 14 and the dividing plate 10 offers inlet hole 18, and this inlet hole 18 is connected with air inlet system.
Stainless steel material after these pin type Pilot poppet 11 employings are modified, the top that this pin type Pilot poppet 11 cooperates with sleeve 7 is coniform.
The chamber that forms between this dividing plate 10 and the sleeve 7 offers exhaust port 19, and sealing is provided with joint 20 in this exhaust port 19, and this joint 20 is tightly connected with the external discharge pressure pipe 21 of valve body, and the external discharge pressure pipe 21 of this valve body connects with outlet.
The cage main valve plug that this main valve plug 8 is made for stainless steel material, the sealing angle of this cage main valve plug are 60 degree.
As shown in Figure 2, the top end face of this main valve plug 8 is provided with several pressurized holes 22, to solve a traditional hole pressurized mode, avoids stopping up and maintenance
This pneumatic control valve is selected the design of reaction form for use, when pressure is provided, main valve plug is to top offset, these pin type Pilot poppet 11 compression faces are just opposite with prior art, valve seat is little, pressure reduction is little, life-span is long, and these pin type Pilot poppet 11 seal face materials are stainless steel 2Cr13 material, is 2-4 times of tetrafluoroethylene after quenching with Subsequent tempering, and, the utility model adopts the pressure discharge method of external pipe, and for ease of maintenaince and change, the material of this main valve plug also is the 2Cr13 material after the quenching with Subsequent tempering, seal angle is 60 degree, and the impurity that contains in the pipeline can not be caused damage to spool.
In sum, the utility model from application target, on the usefulness, viewpoint such as progressive and novelty sets forth, the practical improvement that it has, function enhancement and practical important document that novel Patent Law is emphasized have been accorded with, shown in the implementation and accompanying drawing that the utility model is above, be one of the utility model preferred embodiment, be not to limit to the utility model with this, be with, such as with approximate, identical person such as structure of the present utility model, device, feature, all should belong to of the present utility model founding within purpose and the claim.
Claims (8)
1, a kind of pneumatic control valve, it comprises valve body, this valve body comprises import, outlet, flow-guiding mouth and valve port, it is characterized in that: inner edge offers circular groove on this valve port, engaging is provided with first packing ring in this circular groove, this first packing ring is provided with sleeve, is equipped with main valve plug in this sleeve, and the flow-guiding mouth of this main valve plug and main valve plug below is sealed and matched;
Sealing and fixing has middle adapter on this valve port, be provided with dividing plate in this middle adapter, sealing is slided and is equipped with the pin type Pilot poppet in this dividing plate, this pin type Pilot poppet is inserted and is withstood in the positioning hole that is provided with on the sleeve, be fixed with upper cover plate by diaphragm seal on this middle adapter, this pin type Pilot poppet is fixed on the diaphragm by second packing ring and bullet king pad, and the chamber that forms between this diaphragm and the dividing plate offers inlet hole, and this inlet hole is connected with air inlet system.
2, pneumatic control valve as claimed in claim 1 is characterized in that: the stainless steel material after this pin type Pilot poppet employing is modified, the top that this pin type Pilot poppet cooperates with sleeve is coniform.
3, pneumatic control valve as claimed in claim 1 is characterized in that: the chamber that forms between this dividing plate and the sleeve offers exhaust port, and this exhaust port is connected with the external discharge pressure pipe of valve body, and external discharge pressure pipe of this valve body and outlet connect.
4, pneumatic control valve as claimed in claim 3 is characterized in that: sealing is provided with joint in this exhaust port, and the external discharge pressure pipe of this joint and valve body is tightly connected.
5, pneumatic control valve as claimed in claim 1 is characterized in that: this main valve plug is the cage main valve plug that stainless steel material is made, and the sealing angle of this cage main valve plug is 60 degree.
6, pneumatic control valve as claimed in claim 5 is characterized in that: the top end face of this main valve plug is provided with several pressurized holes.
7, pneumatic control valve as claimed in claim 1 is characterized in that: this diaphragm is the tetrafluoroethylene diaphragm.
8, pneumatic control valve as claimed in claim 1 is characterized in that: this air inlet system is a cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420049594 CN2695734Y (en) | 2004-04-23 | 2004-04-23 | Pneumatic control valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420049594 CN2695734Y (en) | 2004-04-23 | 2004-04-23 | Pneumatic control valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2695734Y true CN2695734Y (en) | 2005-04-27 |
Family
ID=34776666
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420049594 Expired - Fee Related CN2695734Y (en) | 2004-04-23 | 2004-04-23 | Pneumatic control valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2695734Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101526138B (en) * | 2009-04-20 | 2012-10-31 | 张鹤鸣 | Open upward impulse conical discharge valve |
| CN113028121A (en) * | 2021-04-27 | 2021-06-25 | 安徽省绿环电气股份有限公司 | Electromagnetic valve diaphragm assembly improved structure for preventing blocking and diaphragm cracking |
-
2004
- 2004-04-23 CN CN 200420049594 patent/CN2695734Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101526138B (en) * | 2009-04-20 | 2012-10-31 | 张鹤鸣 | Open upward impulse conical discharge valve |
| CN113028121A (en) * | 2021-04-27 | 2021-06-25 | 安徽省绿环电气股份有限公司 | Electromagnetic valve diaphragm assembly improved structure for preventing blocking and diaphragm cracking |
| CN113028121B (en) * | 2021-04-27 | 2023-08-18 | 安徽省绿环电气股份有限公司 | Improved structure of electromagnetic valve diaphragm assembly for preventing blocking and diaphragm rupture |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |