CN111059303A - Cone sealing structure and electromagnetic pilot control air valve - Google Patents
Cone sealing structure and electromagnetic pilot control air valve Download PDFInfo
- Publication number
- CN111059303A CN111059303A CN201911384208.7A CN201911384208A CN111059303A CN 111059303 A CN111059303 A CN 111059303A CN 201911384208 A CN201911384208 A CN 201911384208A CN 111059303 A CN111059303 A CN 111059303A
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- Prior art keywords
- sealing
- valve
- pilot
- conical surface
- cone
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/36—Valve members
- F16K1/38—Valve members of conical shape
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/46—Attachment of sealing rings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
- F16K31/36—Actuating devices; Operating means; Releasing devices actuated by fluid in which fluid from the circuit is constantly supplied to the fluid motor
- F16K31/40—Actuating devices; Operating means; Releasing devices actuated by fluid in which fluid from the circuit is constantly supplied to the fluid motor with electrically-actuated member in the discharge of the motor
- F16K31/406—Actuating devices; Operating means; Releasing devices actuated by fluid in which fluid from the circuit is constantly supplied to the fluid motor with electrically-actuated member in the discharge of the motor acting on a piston
Abstract
The invention relates to a cone sealing structure and an electromagnetic pilot control air valve, which comprise a sealing surface, wherein the sealing surface is matched with a hole, the sealing surface is an outer conical surface, the sealing surface is made of a soft alloy material, the hole is provided with an inner conical surface, and the outer conical surface is matched with the inner conical surface to form a conical surface sealing belt. The cone sealing structure and the pilot electromagnetic control air valve are easy to realize no clearance between sealing surfaces, easy to form a sealing strip, uniform in flow field distribution and easy to be used in a high-pressure system; the main valve core is of a hard seal and soft seal combined structure, double sealing is realized, and the sealing performance is improved; can resist high temperature, abrasion, aging and corrosion, and has good mechanical property and long service life.
Description
Technical Field
The invention relates to a long-acting sealing and pressure maintaining technology of high-pressure gas, in particular to a cone sealing structure and an electromagnetic pilot control gas valve.
Background
With the continuous development of fluid mechanical technology, the demand of fluid mechanical systems on control elements is higher and higher. In the pneumatic circuit, gas is one of the working media commonly used in fluid mechanical systems, and the characteristics of strong fluidity, small density, large influence on volume and temperature are the most remarkable characteristics of gas, so that the sealing and pressure maintaining of high-pressure gas are particularly important in the high-pressure circuit system. At present, the sealing mode of the conventional pilot-operated electromagnetic control gas on-off valve in the market mainly takes soft sealing as a main part, namely, one side of two sides of a sealing pair is made of metal materials, and the other side of the sealing pair is made of elastic non-metal materials, such as: steel + rubber, steel + polytetrafluoroethylene, and the like. As shown in fig. 6 and 7, the pilot electromagnetic flow breaker valve has two different structures, each of which includes a pilot valve core 91, a pressure relief hole 92, a valve cover 93, a main valve core 94, a main valve body 95, a valve hole 96, and a non-metal sealing portion 97. The sealing structures shown in fig. 6 and 7 are all: 1. the non-metal sealing material on the pilot valve core and the orifice plane (metal material) of the pressure relief hole on the valve cover form a sealing structure, and the sealing strip is an annular plane; 2. the non-metal sealing material on the main valve core and the valve hole opening plane (metal material) on the main valve body form a sealing structure, and the sealing belt is an annular plane. The sealing structure is not high temperature resistant, is easy to wear and has poor mechanical property.
Disclosure of Invention
The invention aims to solve the problems in the prior art and provides a cone sealing structure and an electromagnetic pilot control air valve which have the advantages of good sealing performance, high temperature resistance, difficult abrasion and good mechanical property.
The specific technical scheme is as follows: the cone sealing structure comprises a sealing surface, wherein the sealing surface is matched with a hole, the sealing surface is an outer conical surface, the sealing surface is made of a soft alloy material, the hole is provided with an inner conical surface, and the outer conical surface and the inner conical surface are matched to form a conical surface sealing belt.
The following is an attached technical solution of the present invention.
Furthermore, a sealing ring is arranged on the sealing surface and arranged around the outer conical surface.
Furthermore, the outer conical surface is provided with an annular groove, and the sealing ring is arranged in the annular groove.
Further, the sealing surface is made of soft copper alloy.
An electromagnetic pilot control gas valve, comprising a pilot valve core, a pressure relief hole, a main valve core and a valve hole, wherein a cone sealing structure is arranged between the pilot valve core and the pressure relief hole, a cone sealing structure is arranged between the main valve core and the valve hole, and the cone sealing structure is the cone sealing structure as claimed in any one of claims 1 to 4.
Furthermore, an annular groove is formed in the outer conical surface of the main valve core, and the sealing ring is arranged in the annular groove.
Furthermore, electromagnetism pilot control pneumatic valve includes the main valve body, and main valve body both ends are equipped with import and export respectively, and the valve opening setting is between import and export, and the main valve core sets up in the valve opening.
Furthermore, one end of the pressure relief hole is communicated with the outlet, and the other end of the pressure relief hole is sealed by the pilot valve core.
Furthermore, the pilot valve core and the main valve core are both provided with springs.
Furthermore, the outer conical surface is a cone with the diameter of the upper end larger than that of the lower end.
The invention has the technical effects that: the cone sealing structure and the pilot electromagnetic control air valve have the following advantages that: (1) the conical valve core structure is easy to realize no clearance between sealing surfaces, and the conical surface of the conical valve core is made of soft copper alloy, so that a sealing strip is easy to form; (2) the fluid flow direction at the conical valve port is suddenly reduced, the flow field is uniformly distributed, and the valve is easy to be used in a high-pressure system; (3) the main valve core is of a hard seal and soft seal combined structure, double sealing is realized, and the sealing performance is improved; (4) the valve core sealing material is soft copper alloy, can resist high temperature, abrasion, aging and corrosion, and has good mechanical property and long service life.
Drawings
FIG. 1 is a schematic diagram of a cone seal arrangement for a pilot poppet according to an embodiment of the present invention.
FIG. 2 is a schematic of a conical seal arrangement of a primary spool of an embodiment of the invention.
Fig. 3 is a schematic diagram of a pilot-operated solenoid-operated gas valve in accordance with an embodiment of the present invention.
FIG. 4 is a schematic view of a pilot valve cartridge according to an embodiment of the present invention.
FIG. 5 is a schematic view of a main spool of an embodiment of the present invention.
Fig. 6 is a schematic diagram of a prior art pilot-operated electromagnetic flux shutoff valve.
Fig. 7 is a schematic diagram of another prior art pilot-operated electromagnetic flux shutoff valve.
Description of reference numerals: 1. a sealing surface; 2. an aperture; 3. a seal ring; 4. a pilot valve spool; 5. a pressure relief hole; 6. A main valve element; 7. a valve bore; 8. a pilot valve body; 9. a valve cover; 10. an electromagnet; 11. an annular groove; 12. a main valve body; 13. a spring; 21. an inner conical surface; 121. an inlet; 122. and (7) an outlet.
Detailed Description
The essential features and advantages of the invention will be further explained below with reference to examples, but the invention is not limited to the examples listed.
As shown in fig. 1 and 2, a cone seal structure of the present embodiment includes a seal surface 1, and the seal surface 1 is fitted to a hole 2. The sealing surface 1 is an outer conical surface, the sealing surface 1 is made of soft alloy materials, the hole 2 is provided with an inner conical surface 21, and the outer conical surface and the inner conical surface 21 are matched to form a conical surface sealing belt. In the technical scheme, the sealing surface is of an outer conical surface structure, so that no gap is formed between conical surface sealing belts easily, and the outer conical surface is made of soft alloy, so that the sealing belts are easily formed. The sealing material is soft alloy, can resist high temperature, abrasion, aging and corrosion, and has good mechanical property and long service life.
In this embodiment, the sealing surface 1 is provided with the sealing ring 3, and the sealing ring 3 is arranged around the outer conical surface, so that the conical sealing strip is a hard sealing and soft sealing combined structure, double sealing is realized, and sealing performance is improved.
In this embodiment, the outer conical surface is provided with an annular groove 11, and the sealing ring 3 is disposed in the annular groove 11, and in this embodiment, the sealing ring is an O-shaped sealing ring, so as to further improve the sealing performance.
In this embodiment, the sealing surface 1 is made of soft copper alloy, which is resistant to high temperature, wear, aging, and corrosion, and has good mechanical properties and long service life.
As shown in fig. 3 to 5, an electromagnetic pilot control valve of the present embodiment includes a pilot valve element 4, a pressure relief hole 5, a main valve element 6, and a valve hole 7, wherein a conical sealing structure is provided between the pilot valve element 4 and the pressure relief hole 5, and a conical sealing structure is provided between the main valve element 6 and the valve hole 7. In the technical scheme, the sealing surface of the pilot valve core is of an outer conical surface structure, the sealing surface is made of soft copper alloy, the copper alloy is welded on the outer conical surface of the valve core through fusion welding, and the fine machined pilot valve core is matched with the inner conical surface of the pressure relief hole to realize pilot valve sealing. In this embodiment, the pilot valve element 4 is provided in the pilot valve body 8, and the bonnet 9 and the electromagnet 10 are provided above the pilot valve body 8. The conical surface of the pilot valve core is made of soft copper alloy, when the electromagnet is powered off, the pilot valve core 4 is in contact with the inner conical surface of the pressure relief hole 5 under the action of spring force, and the outer conical surface of the pilot valve core forms an annular conical surface sealing strip (as shown in figure 1) through a certain plastic deformation amount and the inner conical surface of the pressure relief hole, so that the pressure relief hole is disconnected. Through above-mentioned technical scheme, can promote the leakproofness of leading valve core and main valve core.
In this embodiment, the outer conical surface of the main valve element 6 is provided with an annular groove 11, the sealing ring 3 is arranged in the annular groove 11, the outer conical surface of the main valve element is made of soft copper alloy, when the electromagnet is powered off, under the action of air pressure and spring force, the outer conical surface of the main valve element is contacted with the inner conical surface of the valve hole, the outer conical surface of the main valve element and the inner conical surface of the valve hole form an annular conical surface sealing strip (as shown in fig. 2) through a certain amount of plastic deformation, and meanwhile, the ○ -shaped sealing ring of the outer conical surface of the main valve element is tightly attached to the sealing groove and the inner conical surface of the valve hole under the action.
In this embodiment, the electromagnetic pilot control valve includes a main valve body 12, an inlet 121 and an outlet 122 are respectively disposed at two ends of the main valve body 12, a valve hole 7 is disposed between the inlet 121 and the outlet 122, and a main valve element 6 is disposed in the valve hole 7. In the technical scheme, fluid enters the electromagnetic pilot control air valve through the inlet, and when the main valve core is opened, the fluid can flow from the inlet to the outlet.
In this embodiment, one end of the pressure relief hole 5 is communicated with the outlet 122, and the other end is sealed by the pilot valve core 4.
In this embodiment, both pilot valve element 4 and main valve element 6 are provided with a spring 13, thereby providing a spring force.
In this embodiment, the outer conical surface is a cone with the diameter of the upper end larger than that of the lower end, so that the fluid flow direction at the valve port of the conical valve is reduced suddenly, the flow field distribution is uniform, and the conical valve is easy to be used in a high-pressure system.
The operating principle of the pilot-operated type electromagnetic control air valve of the embodiment is as follows: the pilot-operated electromagnetic control gas valve is a normally-closed valve, i.e. high-pressure gas at an inlet (high-pressure cavity) cannot flow into a working system (or flow out) from an outlet (low-pressure cavity) through a valve hole. When the electromagnet 10 is electrified, the magnetic attraction opens the pilot valve element 4, airflow flows into a working system (or flows out) through the pressure relief hole 5, and at the moment, the main valve element moves upwards to be opened due to the up-down pressure difference of the main valve element 6, so that the air flows from the inlet to the outlet; when the electromagnet is powered off, the magnetic attraction force is lost, the pilot valve element 4 is closed under the action of spring force, and the main valve element closes the valve hole 7 under the action of upper cavity pressure and spring force, so that the inlet and the outlet are disconnected.
The pilot-operated electromagnetic control air valve of the embodiment has the following advantages: (1) the conical valve core structure is easy to realize no clearance between sealing surfaces, and the conical surface of the conical valve core is made of soft copper alloy, so that a sealing strip is easy to form; (2) the fluid flow direction at the conical valve port is suddenly reduced, the flow field is uniformly distributed, and the valve is easy to be used in a high-pressure system; (3) the main valve core is of a hard seal and soft seal combined structure, double sealing is realized, and the sealing performance is improved; (4) the valve core sealing material is soft copper alloy, can resist high temperature, abrasion, aging and corrosion, and has good mechanical property and long service life.
It should be noted that the above-mentioned preferred embodiments are merely illustrative of the technical concepts and features of the present invention, and are intended to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.
Claims (10)
1. The cone sealing structure comprises a sealing surface, and the sealing surface is matched with a hole.
2. The cone seal arrangement according to claim 1 wherein said sealing surface is provided with a sealing ring disposed around the outer conical surface.
3. The cone seal structure according to claim 2 wherein the outer cone surface is provided with an annular groove and the seal ring is disposed in the annular groove.
4. The cone seal structure of claim 1 wherein the sealing surface is a soft copper alloy.
5. An electromagnetic pilot control gas valve, comprising a pilot valve core, a pressure relief hole, a main valve core and a valve hole, wherein a cone sealing structure is arranged between the pilot valve core and the pressure relief hole, and a cone sealing structure is arranged between the main valve core and the valve hole, and the cone sealing structure is the cone sealing structure as claimed in any one of claims 1 to 4.
6. The electromagnetic pilot-controlled gas valve according to claim 1, characterized in that the outer conical surface of the main valve core is provided with an annular groove, and the sealing ring is arranged in the annular groove.
7. The electromagnetic pilot-controlled gas valve according to claim 6, characterized in that the electromagnetic pilot-controlled gas valve comprises a main valve body, the two ends of the main valve body are respectively provided with an inlet and an outlet, a valve hole is arranged between the inlet and the outlet, and the main valve core is arranged in the valve hole.
8. The electromagnetic pilot-controlled gas valve according to claim 7, characterized in that one end of the pressure relief hole is communicated with the outlet, and the other end is sealed by the pilot valve core.
9. The electromagnetic pilot-controlled gas valve according to claim 8, characterized in that the pilot valve spool and the main valve spool are provided with springs.
10. The electromagnetic pilot-controlled gas valve according to claim 9, characterized in that the outer conical surface is conical with a diameter of the upper end larger than that of the lower end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911384208.7A CN111059303A (en) | 2019-12-28 | 2019-12-28 | Cone sealing structure and electromagnetic pilot control air valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911384208.7A CN111059303A (en) | 2019-12-28 | 2019-12-28 | Cone sealing structure and electromagnetic pilot control air valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111059303A true CN111059303A (en) | 2020-04-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911384208.7A Pending CN111059303A (en) | 2019-12-28 | 2019-12-28 | Cone sealing structure and electromagnetic pilot control air valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111059303A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114576365A (en) * | 2020-11-30 | 2022-06-03 | 余姚市仪表四厂 | Pilot diaphragm type normally-open electromagnetic valve structure |
| CN116951043A (en) * | 2023-09-21 | 2023-10-27 | 四川宁江山川机械有限责任公司 | Pilot valve of electromagnetic valve of shock absorber |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201963999U (en) * | 2011-03-18 | 2011-09-07 | 重庆环茂电磁阀有限公司 | Double-layered pilot-operated type hard and soft tapered seal electromagnetic valve |
| CN204062027U (en) * | 2014-09-02 | 2014-12-31 | 宣达实业集团有限公司 | high voltage direct current swing check valve |
| CN105333205A (en) * | 2015-11-23 | 2016-02-17 | 浙江理工大学 | High-pressure pilot-operated solenoid valve for compressed natural gas automobile |
| CN206419493U (en) * | 2016-10-20 | 2017-08-18 | 浙江天特阀门有限公司 | A kind of Double sealing globe valve |
| CN207049377U (en) * | 2017-07-01 | 2018-02-27 | 乔森 | A kind of unidirectional stop valve |
-
2019
- 2019-12-28 CN CN201911384208.7A patent/CN111059303A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201963999U (en) * | 2011-03-18 | 2011-09-07 | 重庆环茂电磁阀有限公司 | Double-layered pilot-operated type hard and soft tapered seal electromagnetic valve |
| CN204062027U (en) * | 2014-09-02 | 2014-12-31 | 宣达实业集团有限公司 | high voltage direct current swing check valve |
| CN105333205A (en) * | 2015-11-23 | 2016-02-17 | 浙江理工大学 | High-pressure pilot-operated solenoid valve for compressed natural gas automobile |
| CN206419493U (en) * | 2016-10-20 | 2017-08-18 | 浙江天特阀门有限公司 | A kind of Double sealing globe valve |
| CN207049377U (en) * | 2017-07-01 | 2018-02-27 | 乔森 | A kind of unidirectional stop valve |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114576365A (en) * | 2020-11-30 | 2022-06-03 | 余姚市仪表四厂 | Pilot diaphragm type normally-open electromagnetic valve structure |
| CN114576365B (en) * | 2020-11-30 | 2023-06-23 | 余姚市仪表四厂 | Pilot diaphragm type normally open electromagnetic valve structure |
| CN116951043A (en) * | 2023-09-21 | 2023-10-27 | 四川宁江山川机械有限责任公司 | Pilot valve of electromagnetic valve of shock absorber |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200424 |
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| RJ01 | Rejection of invention patent application after publication |