CN102767688A - Guild rail type free float drain valve - Google Patents
Guild rail type free float drain valve Download PDFInfo
- Publication number
- CN102767688A CN102767688A CN2012102910233A CN201210291023A CN102767688A CN 102767688 A CN102767688 A CN 102767688A CN 2012102910233 A CN2012102910233 A CN 2012102910233A CN 201210291023 A CN201210291023 A CN 201210291023A CN 102767688 A CN102767688 A CN 102767688A
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- valve
- valve body
- valve seat
- main valve
- ball float
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Abstract
The invention relates to a drain valve and provides a guild rail type free float drain valve which uses a three-point positioning sealing mode. The valve comprises a valve body, a valve cover, an air exhaust device, a filtering screen, a separating cover, a snap spring, a floating ball, a sewage draining bolt, a guild rail, a main valve seat, a main valve seat gasket and an outer plug, wherein the valve cover is installed at the upper end of the valve body, a wound gasket is arranged between the valve body and the valve cover, the air exhaust device is connected with a threaded hole of the lower end face of the valve cover, the floating ball is arranged in the inner cavity of the valve body, the separating cover and the filtering screen are respectively installed on a boss of the inner cavity of the valve body, the snap spring is pressed on the filtering screen and is arranged in a groove of the snap spring, the sewage draining bolt is sleeved in the wound gasket and is installed in a sewage draining threaded hole of the side lower end of the valve body, the guild rail is arranged on the two side surfaces of the bottom of a valve cavity and is connected with the valve body into a whole, an axle center of the guild rail and a main valve seat hole are coaxial, the cambered surface of the guild rail is the same as the radian of the outer diameter of the floating ball, the main valve seat is sleeved in the main valve seat gasket and is connected with the main valve seat threaded hole of the valve body, and the outer plug is sleeved in the wound gasket and is in threaded connection with the lower side end of the valve body.
Description
Technical field
The present invention relates to a kind of high-accuracy drain valve, especially a kind of guide tracked free floating ball drain valve.
Background technique
Existing drain valve has Automatic steam trap Trap and air drain valve etc., and Automatic steam trap Trap has mechanical-type, heat static force type and heat power type etc.The most of mechanical-type that adopts of air drain valve.The mechanical-type drain valve has free floating ball drain valve, lever and floating drain valve, invert barrel drain valve etc.The mechanical-type drain valve is to utilize the principle of steam and water of condensation or vapour (gas) and density of liquid difference to develop; Because vapour (gas) and its density variation of liquid are very big; Its buoyancy is also different, utilizes this characteristic, and float is played a role; Thereby opening/shutting valve reaches the function that hinders vapour (gas) draining.The free floating ball drain valve is compared with lever and floating drain valve and invert barrel drain valve; Its advantage is not have lever construction; The problems such as shortcoming of the friction that lever construction produced and easy to wear and action gap have been overcome; Thereby be a kind of simple in structure in the mechanical-type drain valve, function admirable, drain valve rational in infrastructure.
Existing free floating ball drain valve structure is established a strong point in the valve pocket bottom usually, and the height so that the control ball float descends makes the sealing station of ball float and drain valve seat hole reach best condition.Because at work, the medium in the valve pocket is vapour (gas) body and liquid two phase flow, its dynamic variation and astable, and the sealing means of therefore depending merely on a strong point structure makes the moment less stable of ball float in sealing, and sealability is unstable.
Chinese patent CN2243017 discloses a kind of double-force type free floating ball drain valve; Be provided with double outlet of portalling on valve body top; Ball float in the valve body cooperates with valve seat to form and seals, and auxiliary valve body is equipped with on valve body top, and secondary valve gap connects with auxiliary valve body in the chamber of formation valve block is housed.This invention has that to get rid of in the body cavity air rapid, and ball float opens and closes rapidly accurately, and the upper and lower hole of letting out of valve body can be opened simultaneously, and it is thorough rapidly to get rid of condensed water, and Applicable scope is extensive.
Summary of the invention
The objective of the invention is to seal moment stability shortcoming such as relatively poor in ball float and valve seat orifice, a kind of guide tracked free floating ball drain valve that adopts the three points location sealing means is provided to existing free floating ball drain valve.
The present invention is provided with valve body, valve gap, emptying device of air, filter screen, separated cover, jump ring, ball float, blowdown bolt, guide rail, main valve seat, main valve seat sealing gasket and outer plug;
Said valve gap is installed in valve body upper end, wound gasket is housed between valve body and the valve gap and is fastenedly connected with bolt and nut; Said emptying device of air and valve gap lower end surface tapped hole are fastenedly connected; The said ball float body cavity of packing into; Said separated cover and filter screen are installed in respectively on the inner chamber boss of valve body; Said jump ring be pressed on the filter screen and the groove of the jump ring of packing in; Said blowdown bolt is inserted in wound gasket and is installed in the valve body lower side blowdown tapped hole; Said guide rail is located at valve pocket two bottom sides face and valve body is connected to integral body, and the axle center of guide rail is coaxial with the main valve seat hole, and the cambered surface of guide rail is identical with the external diameter radian of ball float; Said main valve seat is inserted in the main valve seat sealing gasket and is fastenedly connected with the main valve seat tapped hole of valve body; Said outer plug is inserted in wound gasket and is connected with valve body lower side screw threads for fastening.
Existing free floating ball drain valve; Normally establish a strong point and control the height that ball float descends in the valve pocket bottom; Make the identical contraposition of sealing surface and drain valve seat hole of ball float, under actual conditions, the medium in the valve pocket is that two of high-temperature steam and condensed water in high temperature mixes mutually; Its dynamic variation makes ball float produce instability, has influenced the sealing in ball float and drain valve seat hole.When in the valve pocket during liquid fluctuating, ball float is swing thereupon also, and drain valve will be in seemingly to be opened like off status, and the switch motion of drain valve is not obvious, and leakage vapour (gas) amount of drain valve is also just bigger.Therefore sealability is unstable, and functional reliability is poor.
Compare with existing free floating ball drain valve, the present invention is provided with two guide rails at valve pocket two bottom sides face, and the axle center of its guide rail is coaxial with the main valve seat hole, and the guide rail cambered surface is identical with ball float external diameter radian.After water of condensation is got rid of; When ball float dropped to the valve pocket bottom, two guide rails were held ball float, had formed two strong points because ball float contacts the cambered surface of two guide rails; Ball float rolls to the drain valve seat hole along the inclined-plane of guide rail; When the sealing surface of ball float contacts with the drain valve seat hole is identical, form three points location, contraposition is accurate when under the three points location effect, making the ball float sealing.Though close behind the valve liquid fluctuating in the valve pocket, the sealing that ball float can be very stable valve seat orifice, guarantee drain valve close tight, can realize zero leakage.The switch motion of drain valve is obvious, can not produce seemingly to hold seemingly to close phenomenon.Under high-temperature steam and actual conditions that condensed water in high temperature vapour-liquid two is mixed mutually, it is dynamic to change that ball float is produced is unstable, if ball float only depends on the strong point in valve pocket bottom; Ball float can produce and swing, and influences sealability, causes the fresh steam leakage rate big; Not energy-conservation; Even the sealing surface of drain valve seat mouth can produce cavitation erosion under the situation of often leaking, and makes leakage rate increasing; The sealability that promptly can influence this valve can cause a large amount of fresh steams to leak again, and influences the working life of this valve.
In sum, the present invention has following outstanding advantage:
1, the present invention adopts two guide rail new structures, when ball float seals, forms three points location, under the effect of three points location, makes ball float contraposition when sealing accurate.
2, good seal performance of the present invention, energy-saving effect is remarkable.
3, the present invention advanced person rational in infrastructure, stable work in work, long service life.
Description of drawings
Fig. 1 is that the structure of the embodiment of the invention is formed schematic representation.
Fig. 2 is the A-A cut-away view among Fig. 1.
Embodiment
Referring to Fig. 1 and 2, the embodiment of the invention is provided with valve body 1, valve gap 2, emptying device of air 3, filter screen 4, separated cover 5, jump ring 6, ball float 7, blowdown bolt 8, guide rail 9, main valve seat 10, main valve seat sealing gasket 11, outer plug 12 and wound gasket 13.
Said valve gap 2 is installed in valve body 1 upper end, wound gasket 13 is housed between valve body 1 and the valve gap 2 and is fastenedly connected with bolt and nut; Said emptying device of air 3 is fastenedly connected with valve gap 2 lower end surface tapped holes; Said ball float 7 valve body 1 inner chamber of packing into; Said separated cover 5 is installed in respectively on the inner chamber boss of valve body 1 with filter screen 4; Said jump ring 6 be pressed on the filter screen 4 and the groove of the jump ring 6 of packing in; Said blowdown bolt 8 is inserted in wound gasket and is installed in the valve body 1 lower side blowdown tapped hole; Said guide rail 9 is located at valve pocket two bottom sides face and valve body 1 is connected to integral body, and the axle center of guide rail 9 is coaxial with the main valve seat hole, and the cambered surface of guide rail 9 is identical with the external diameter radian of ball float 7; Said main valve seat 10 is inserted in the main valve seat sealing gasket 11 and is fastenedly connected with the main valve seat tapped hole of valve body 1; Said outer plug 12 is inserted in wound gasket and is connected with valve body 1 lower side screw threads for fastening.
Below provide working principle of the present invention:
When incondensable gas got into valve pocket, venting gas appliance (the hot static(al) formula of pressure balance bellows) did not produce the power of picking, opens automatically under the situation of not being heated, get rid of incondensable gas; When thermal coagulation water arrived valve pocket, venting gas appliance (the hot static(al) formula of pressure balance bellows) temperature distortion, generation picked power, order about exhaust plug and close the delivery valve seat hole.At this moment the ball float in the valve pocket raises with the rising of water level, opens the drain valve seat hole automatically, gets rid of water of condensation; After water of condensation was got rid of, the water level in the valve pocket was along with reduction, and ball float descends with the decline of water level; When ball float dropped to the valve pocket bottom, two guide rails were held ball float, formed 2 supports when contacting with the ball float sphere owing to two guide rail cambered surfaces, and ball float rolls to the drain valve seat hole along plurality of ramps; When the sphere of ball float contacts with the drain valve seat hole, form three points location, ball float is under the effect of three points location, and contraposition is accurate, closes the drain valve seat hole, stops draining; When water of condensation got into once more, next do action began again.
Claims (1)
1. guide tracked free floating ball drain valve is characterized in that being provided with valve body, valve gap, emptying device of air, filter screen, separated cover, jump ring, ball float, blowdown bolt, guide rail, main valve seat, main valve seat sealing gasket and outer plug;
Said valve gap is installed in valve body upper end, wound gasket is housed between valve body and the valve gap and is fastenedly connected with bolt and nut; Said emptying device of air and valve gap lower end surface tapped hole are fastenedly connected; The said ball float body cavity of packing into; Said separated cover and filter screen are installed in respectively on the inner chamber boss of valve body; Said jump ring be pressed on the filter screen and the groove of the jump ring of packing in; Said blowdown bolt is inserted in wound gasket and is installed in the valve body lower side blowdown tapped hole; Said guide rail is located at valve pocket two bottom sides face and valve body is connected to integral body, and the axle center of guide rail is coaxial with the main valve seat hole, and the cambered surface of guide rail is identical with the external diameter radian of ball float; Said main valve seat is inserted in the main valve seat sealing gasket and is fastenedly connected with the main valve seat tapped hole of valve body; Said outer plug is inserted in wound gasket and is connected with valve body lower side screw threads for fastening.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102910233A CN102767688A (en) | 2012-08-16 | 2012-08-16 | Guild rail type free float drain valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102910233A CN102767688A (en) | 2012-08-16 | 2012-08-16 | Guild rail type free float drain valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102767688A true CN102767688A (en) | 2012-11-07 |
Family
ID=47095193
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012102910233A Pending CN102767688A (en) | 2012-08-16 | 2012-08-16 | Guild rail type free float drain valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102767688A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107228272A (en) * | 2017-07-24 | 2017-10-03 | 盐城易宝路轮胎有限公司 | A kind of tyre vulcanizer drain valve |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0861596A (en) * | 1994-08-12 | 1996-03-08 | Tlv Co Ltd | Float type trap |
| JPH1030792A (en) * | 1996-07-15 | 1998-02-03 | Tlv Co Ltd | Liquid force feed device |
| JP2001099396A (en) * | 1999-09-27 | 2001-04-10 | Tlv Co Ltd | Steam trap with piping joint |
| CN2586051Y (en) * | 2002-07-10 | 2003-11-12 | 孙平 | Intermittent bleeder |
| CN2830865Y (en) * | 2005-03-02 | 2006-10-25 | 孙平 | Adjustable floater trap |
| CN201202959Y (en) * | 2008-05-15 | 2009-03-04 | 李生辉 | Bellows air-discharging free floating ball type steam drain valve |
| CN202756896U (en) * | 2012-08-16 | 2013-02-27 | 洪新强 | Guide rail type free floating ball drain valve |
-
2012
- 2012-08-16 CN CN2012102910233A patent/CN102767688A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0861596A (en) * | 1994-08-12 | 1996-03-08 | Tlv Co Ltd | Float type trap |
| JPH1030792A (en) * | 1996-07-15 | 1998-02-03 | Tlv Co Ltd | Liquid force feed device |
| JP2001099396A (en) * | 1999-09-27 | 2001-04-10 | Tlv Co Ltd | Steam trap with piping joint |
| CN2586051Y (en) * | 2002-07-10 | 2003-11-12 | 孙平 | Intermittent bleeder |
| CN2830865Y (en) * | 2005-03-02 | 2006-10-25 | 孙平 | Adjustable floater trap |
| CN201202959Y (en) * | 2008-05-15 | 2009-03-04 | 李生辉 | Bellows air-discharging free floating ball type steam drain valve |
| CN202756896U (en) * | 2012-08-16 | 2013-02-27 | 洪新强 | Guide rail type free floating ball drain valve |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107228272A (en) * | 2017-07-24 | 2017-10-03 | 盐城易宝路轮胎有限公司 | A kind of tyre vulcanizer drain valve |
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| C06 | Publication | ||
| PB01 | Publication | ||
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20121107 |